Summary | ZeroBOX

Category	Machine	Started	Completed
FILE	s1_win7_x6403_us	Sept. 30, 2024, 9:27 a.m.	Sept. 30, 2024, 9:34 a.m.

Size	86.5KB
Type	PE32 executable (DLL) (GUI) Intel 80386, for MS Windows
MD5	`491d3bff3a4c1f12a76346266cf6e130`
SHA256	`3dc396d6ea6ff0bb4470040581ff248de44c4ef794ed925df865a8794ef0ee88`
CRC32	`22F89295`
ssdeep	`1536:WDgYtihPOTa6y3/2klji93u4gglHvqh2ogHkXzAUqO3xDPk:iliJOI3/2eji9b7pImkXL9xDM`
Yara	Malicious_Library_Zero - Malicious_Library PE_Header_Zero - PE File Signature IsDLL - (no description) DllRegisterServer_Zero - execute regsvr32.exe IsPE32 - (no description) UPX_Zero - UPX packed file

rundll32.exe "C:\Windows\System32\rundll32.exe" C:\Users\test22\AppData\Local\Temp\DLLGIRIS.dll,DllCanUnloadNow
1156
rundll32.exe "C:\Windows\System32\rundll32.exe" C:\Users\test22\AppData\Local\Temp\DLLGIRIS.dll,DllRegisterServer
2152
rundll32.exe "C:\Windows\System32\rundll32.exe" C:\Users\test22\AppData\Local\Temp\DLLGIRIS.dll,DllGetClassObject
2060
rundll32.exe "C:\Windows\System32\rundll32.exe" C:\Users\test22\AppData\Local\Temp\DLLGIRIS.dll,DllUnregisterServer
2244
rundll32.exe "C:\Windows\System32\rundll32.exe" C:\Users\test22\AppData\Local\Temp\DLLGIRIS.dll,
2340

Name	Response	Post-Analysis Lookup
No hosts contacted.

IP Address	Status	Action
No hosts contacted.

Suricata Alerts

No Suricata Alerts

Suricata TLS

No Suricata TLS

Checks if process is being debugged by a debugger (4 events)

Time & API	Arguments	Status	Return	Repeated
IsDebuggerPresent Sept. 30, 2024, 9:27 a.m.			0	0
IsDebuggerPresent Sept. 30, 2024, 9:27 a.m.			0	0
IsDebuggerPresent Sept. 30, 2024, 9:27 a.m.			0	0
IsDebuggerPresent Sept. 30, 2024, 9:27 a.m.			0	0

The executable contains unknown PE section names indicative of a packer (could be a false positive) (1 event)

section

.refox

The file contains an unknown PE resource name possibly indicative of a packer (1 event)

resource name

TYPELIB

Allocates read-write-execute memory (usually to unpack itself) (20 events)

Time & API	Arguments	Status
NtProtectVirtualMemory Sept. 30, 2024, 9:27 a.m.	process_identifier: 1156 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 0 length: 4096 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x0cff2000 process_handle: 0xffffffff	1
NtProtectVirtualMemory Sept. 30, 2024, 9:27 a.m.	process_identifier: 1156 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 0 length: 4096 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x7c37a000 process_handle: 0xffffffff	1
NtProtectVirtualMemory Sept. 30, 2024, 9:27 a.m.	process_identifier: 1156 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 0 length: 8192 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x0cff0000 process_handle: 0xffffffff	1
NtProtectVirtualMemory Sept. 30, 2024, 9:27 a.m.	process_identifier: 1156 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 0 length: 4096 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x744a0000 process_handle: 0xffffffff	1
NtProtectVirtualMemory Sept. 30, 2024, 9:27 a.m.	process_identifier: 1156 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 0 length: 4096 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x74471000 process_handle: 0xffffffff	1
NtProtectVirtualMemory Sept. 30, 2024, 9:27 a.m.	process_identifier: 2152 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 0 length: 4096 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x0cff2000 process_handle: 0xffffffff	1
NtProtectVirtualMemory Sept. 30, 2024, 9:27 a.m.	process_identifier: 2152 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 0 length: 4096 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x7c37a000 process_handle: 0xffffffff	1
NtProtectVirtualMemory Sept. 30, 2024, 9:27 a.m.	process_identifier: 2152 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 0 length: 8192 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x0cff0000 process_handle: 0xffffffff	1
NtProtectVirtualMemory Sept. 30, 2024, 9:27 a.m.	process_identifier: 2152 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 0 length: 4096 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x744a0000 process_handle: 0xffffffff	1
NtProtectVirtualMemory Sept. 30, 2024, 9:27 a.m.	process_identifier: 2152 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 0 length: 4096 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x74451000 process_handle: 0xffffffff	1
NtProtectVirtualMemory Sept. 30, 2024, 9:27 a.m.	process_identifier: 2060 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 0 length: 4096 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x0cff2000 process_handle: 0xffffffff	1
NtProtectVirtualMemory Sept. 30, 2024, 9:27 a.m.	process_identifier: 2060 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 0 length: 4096 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x7c37a000 process_handle: 0xffffffff	1
NtProtectVirtualMemory Sept. 30, 2024, 9:27 a.m.	process_identifier: 2060 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 0 length: 8192 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x0cff0000 process_handle: 0xffffffff	1
NtProtectVirtualMemory Sept. 30, 2024, 9:27 a.m.	process_identifier: 2060 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 0 length: 4096 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x744a0000 process_handle: 0xffffffff	1
NtProtectVirtualMemory Sept. 30, 2024, 9:27 a.m.	process_identifier: 2060 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 0 length: 4096 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x74471000 process_handle: 0xffffffff	1
NtProtectVirtualMemory Sept. 30, 2024, 9:27 a.m.	process_identifier: 2244 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 0 length: 4096 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x0cff2000 process_handle: 0xffffffff	1
NtProtectVirtualMemory Sept. 30, 2024, 9:27 a.m.	process_identifier: 2244 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 0 length: 4096 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x7c37a000 process_handle: 0xffffffff	1
NtProtectVirtualMemory Sept. 30, 2024, 9:27 a.m.	process_identifier: 2244 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 0 length: 8192 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x0cff0000 process_handle: 0xffffffff	1
NtProtectVirtualMemory Sept. 30, 2024, 9:27 a.m.	process_identifier: 2244 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 0 length: 4096 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x744a0000 process_handle: 0xffffffff	1
NtProtectVirtualMemory Sept. 30, 2024, 9:27 a.m.	process_identifier: 2244 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 0 length: 4096 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x74471000 process_handle: 0xffffffff	1

File has been identified by 7 AntiVirus engines on VirusTotal as malicious (7 events)

Bkav	W32.AIDetectMalware
Cynet	Malicious (score: 100)
Skyhigh	BehavesLike.Win32.Backdoor.mc
Cylance	Unsafe
APEX	Malicious
TrendMicro	Possible_Virus
Kingsoft	malware.kb.a.999

The binary likely contains encrypted or compressed data indicative of a packer (2 events)

section

{u'size_of_data': u'0x0000d400', u'virtual_address': u'0x0000c000', u'entropy': 7.9903016763443615, u'name': u'.refox', u'virtual_size': u'0x0000d400'}

entropy

7.99030167634

description

A section with a high entropy has been found

entropy

0.630952380952

description

Overall entropy of this PE file is high

DLLGIRIS.dll

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