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vfc.exe

Formbook Process Kill Generic Malware FindFirstVolume Malicious Library CryptGenKey
  1. Resubmit sample
Category Machine Started Completed
FILE s1_win7_x6401 March 21, 2025, 9:09 a.m. March 21, 2025, 9:15 a.m.
Size 1.1MB
Type PE32 executable (GUI) Intel 80386, for MS Windows
MD5 907d825de589180257b3cdd1515c7002
SHA256 60f36b705b107e54c7dc0e683452536f6ac66729955b093002ef9c0c7a9ed1be
CRC32 99B907FA
ssdeep 24576:Ou6J33O0c+JY5UZ+XC0kGso6FaS6b7eIynvCbziWY:Au0c++OCvkGs9FaSG7eIq6BY
Yara
  • Malicious_Library_Zero - Malicious_Library
  • Process_Snapshot_Kill_Zero - Process Kill Zero
  • PE_Header_Zero - PE File Signature
  • FindFirstVolume_Zero - FindFirstVolume Zero
  • CryptGenKey_Zero - CryptGenKey Zero
  • Device_Check_Zero - Device Check Zero
  • IsPE32 - (no description)
  • Generic_Malware_Zero - Generic Malware
  • OS_Processor_Check_Zero - OS Processor Check
  • UPX_Zero - UPX packed file

Suricata Alerts

Flow SID Signature Category
TCP 192.168.56.101:49192 -> 13.248.243.5:80 2221033 SURICATA HTTP Request abnormal Content-Encoding header Generic Protocol Command Decode

Suricata TLS

No Suricata TLS

Time & API Arguments Status Return Repeated

IsDebuggerPresent

 0 0
Time & API Arguments Status Return Repeated

NtProtectVirtualMemory

 process_identifier: 2644
stack_dep_bypass: 0
stack_pivoted: 0
heap_dep_bypass: 0
length: 4096
protection: 64 (PAGE_EXECUTE_READWRITE)
base_address: 0x734c2000
process_handle: 0xffffffff
1 0 0

NtProtectVirtualMemory

 process_identifier: 2644
stack_dep_bypass: 0
stack_pivoted: 0
heap_dep_bypass: 1
length: 32768
protection: 64 (PAGE_EXECUTE_READWRITE)
base_address: 0x009c9000
process_handle: 0xffffffff
1 0 0

NtAllocateVirtualMemory

 process_identifier: 2740
region_size: 3158016
stack_dep_bypass: 0
stack_pivoted: 0
heap_dep_bypass: 0
protection: 64 (PAGE_EXECUTE_READWRITE)
base_address: 0x00c10000
allocation_type: 12288 (MEM_COMMIT|MEM_RESERVE)
process_handle: 0xffffffff
1 0 0

NtAllocateVirtualMemory

 process_identifier: 2740
region_size: 151552
stack_dep_bypass: 0
stack_pivoted: 0
heap_dep_bypass: 0
protection: 64 (PAGE_EXECUTE_READWRITE)
base_address: 0x00310000
allocation_type: 12288 (MEM_COMMIT|MEM_RESERVE)
process_handle: 0xffffffff
1 0 0

NtAllocateVirtualMemory

 process_identifier: 2820
region_size: 3158016
stack_dep_bypass: 0
stack_pivoted: 0
heap_dep_bypass: 0
protection: 64 (PAGE_EXECUTE_READWRITE)
base_address: 0x022b0000
allocation_type: 12288 (MEM_COMMIT|MEM_RESERVE)
process_handle: 0xffffffff
1 0 0

NtAllocateVirtualMemory

 process_identifier: 1452
region_size: 65536
stack_dep_bypass: 0
stack_pivoted: 0
heap_dep_bypass: 0
protection: 64 (PAGE_EXECUTE_READWRITE)
base_address: 0x0000000004720000
allocation_type: 4096 (MEM_COMMIT)
process_handle: 0xffffffffffffffff
1 0 0
description calc.exe tried to sleep 162 seconds, actually delayed analysis time by 162 seconds
file C:\Users\test22\AppData\Local\Google\Chrome\User Data\
file C:\Users\test22\AppData\Local\Chromium\User Data
file C:\Users\test22\AppData\Local\MapleStudio\ChromePlus\User Data
file C:\Users\test22\AppData\Local\Yandex\YandexBrowser\User Data
file C:\Users\test22\AppData\Local\Temp\sqlite3.dll
file C:\Users\test22\AppData\Local\Temp\sqlite3.dll
section {u'size_of_data': u'0x0005a600', u'virtual_address': u'0x000c7000', u'entropy': 7.892846369325493, u'name': u'.rsrc', u'virtual_size': u'0x0005a4a8'} entropy 7.89284636933 description A section with a high entropy has been found
entropy 0.310967741935 description Overall entropy of this PE file is high
Time & API Arguments Status Return Repeated

CreateProcessInternalW

 thread_identifier: 2744
thread_handle: 0x0000013c
process_identifier: 2740
current_directory:
filepath: C:\Windows\System32\svchost.exe
track: 1
command_line: "C:\Users\test22\AppData\Local\Temp\vfc.exe"
filepath_r: C:\Windows\System32\svchost.exe
stack_pivoted: 0
creation_flags: 134217732 (CREATE_NO_WINDOW|CREATE_SUSPENDED)
inherit_handles: 0
process_handle: 0x00000138
1 1 0
file C:\Users\test22\AppData\Local\AVAST Software\Browser\User Data
file C:\Users\test22\AppData\Local\AVG\Browser\User Data
Process injection Process 2740 manipulating memory of non-child process 988
Time & API Arguments Status Return Repeated

NtMapViewOfSection

 section_handle: 0x0000004c
process_identifier: 988
commit_size: 0
win32_protect: 64 (PAGE_EXECUTE_READWRITE)
buffer:
base_address: 0x04250000
allocation_type: 0 ()
section_offset: 0
view_size: 18268160
process_handle: 0x00000050
1 0 0
Process injection Process 2644 called NtSetContextThread to modify thread in remote process 2740
Process injection Process 2740 called NtSetContextThread to modify thread in remote process 2820
Time & API Arguments Status Return Repeated

NtSetContextThread

 registers.eip: 1995571652
registers.esp: 2620268
registers.edi: 0
registers.eax: 4199360
registers.ebp: 0
registers.edx: 0
registers.ebx: 2130567168
registers.esi: 0
registers.ecx: 0
thread_handle: 0x0000013c
process_identifier: 2740
1 0 0

NtSetContextThread

 registers.eip: 1995571652
registers.esp: 1571196
registers.edi: 0
registers.eax: 564784
registers.ebp: 0
registers.edx: 0
registers.ebx: 2130567168
registers.esi: 0
registers.ecx: 0
thread_handle: 0x00000064
process_identifier: 2820
1 0 0
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ESET-NOD32 multiple detections
APEX Malicious
Avast Script:SNH-gen [Trj]
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McAfeeD ti!60F36B705B10
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FireEye Generic.mg.907d825de5891802
Google Detected
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Gridinsoft Ransom.Win32.Wacatac.sa
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ZoneAlarm Troj/AutoIt-DHB
Varist W32/AutoIt.OL.gen!Eldorado
AhnLab-V3 Trojan/AU3.Loader.S2970
McAfee Artemis!907D825DE589
DeepInstinct MALICIOUS
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Ikarus Trojan.Autoit
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Tencent Script.Trojan.Generic.Mgil
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MaxSecure Trojan.Malware.300983.susgen
Fortinet AutoIt/Injector.GKX!tr
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