Report - b

Malicious Library PE File DLL PE64 DllRegisterServer dll
ScreenShot
Created 2024.08.15 15:20 Machine s1_win7_x6403
Filename b
Type PE32+ executable (DLL) (console) x86-64 (stripped to external PDB), for MS Windows
AI Score
2
Behavior Score
3.8
ZERO API file : clean
VT API (file) 50 detected (AIDetectMalware, Windows, CobaltStrike, Malicious, score, Dump, Beacon, Marte, Unsafe, Zusy, Cobalt, Artifact, CLASSIC, AGEN, COBEACON, Static AI, Malicious PE, Detected, ai score=84, R374111, GdSda, susgen, confidence, 100%)
md5 e744a3ee4380bc4eadddeca8fa99e593
sha256 28635585ae474cc5739242aae4844736e27e95a0cb368ebe48e36ead2407574a
ssdeep 6144:O+1V7mmvm0j2Uhq0tK/Bf1+MqBdg9XhpWyO:1m0jVhqT/Lkd4vO
imphash a17186a0dbc86b565628d4a9b8c9cc17
impfuzzy 12:QB8wRJR+5TZnJ2cDkiiARZqRJh7aa0uPXJNiXJGqYU4aRa91KpJqiGxiZn:Q2kfg1JlDdncJ9aa0mez4P91OqiGQZn
  Network IP location

Signature (8cnts)

Level Description
danger File has been identified by 50 AntiVirus engines on VirusTotal as malicious
watch Communicates with host for which no DNS query was performed
notice A process attempted to delay the analysis task.
notice Allocates read-write-execute memory (usually to unpack itself)
notice Changes read-write memory protection to read-execute (probably to avoid detection when setting all RWX flags at the same time)
notice The binary likely contains encrypted or compressed data indicative of a packer
info Checks if process is being debugged by a debugger
info Queries for the computername

Rules (5cnts)

Level Name Description Collection
watch Malicious_Library_Zero Malicious_Library binaries (upload)
info DllRegisterServer_Zero execute regsvr32.exe binaries (upload)
info IsDLL (no description) binaries (upload)
info IsPE64 (no description) binaries (upload)
info PE_Header_Zero PE File Signature binaries (upload)

Network (2cnts) ?

Request CC ASN Co IP4 Rule ? ZERO ?
http://41.216.183.157:18099/cx NL FOP Samosenok Alexandr Sergeevich 41.216.183.157 clean
41.216.183.157 NL FOP Samosenok Alexandr Sergeevich 41.216.183.157 malware

Suricata ids

PE API

IAT(Import Address Table) Library

KERNEL32.dll
 0x6bb0c1cc CloseHandle
 0x6bb0c1d4 ConnectNamedPipe
 0x6bb0c1dc CreateFileA
 0x6bb0c1e4 CreateNamedPipeA
 0x6bb0c1ec CreateThread
 0x6bb0c1f4 DeleteCriticalSection
 0x6bb0c1fc EnterCriticalSection
 0x6bb0c204 GetCurrentProcess
 0x6bb0c20c GetCurrentProcessId
 0x6bb0c214 GetCurrentThreadId
 0x6bb0c21c GetLastError
 0x6bb0c224 GetModuleHandleA
 0x6bb0c22c GetProcAddress
 0x6bb0c234 GetSystemTimeAsFileTime
 0x6bb0c23c GetTickCount
 0x6bb0c244 InitializeCriticalSection
 0x6bb0c24c LeaveCriticalSection
 0x6bb0c254 QueryPerformanceCounter
 0x6bb0c25c ReadFile
 0x6bb0c264 RtlAddFunctionTable
 0x6bb0c26c RtlCaptureContext
 0x6bb0c274 RtlLookupFunctionEntry
 0x6bb0c27c RtlVirtualUnwind
 0x6bb0c284 SetUnhandledExceptionFilter
 0x6bb0c28c Sleep
 0x6bb0c294 TerminateProcess
 0x6bb0c29c TlsGetValue
 0x6bb0c2a4 UnhandledExceptionFilter
 0x6bb0c2ac VirtualAlloc
 0x6bb0c2b4 VirtualProtect
 0x6bb0c2bc VirtualQuery
 0x6bb0c2c4 WriteFile
msvcrt.dll
 0x6bb0c2d4 __iob_func
 0x6bb0c2dc _amsg_exit
 0x6bb0c2e4 _initterm
 0x6bb0c2ec _lock
 0x6bb0c2f4 _unlock
 0x6bb0c2fc abort
 0x6bb0c304 calloc
 0x6bb0c30c free
 0x6bb0c314 fwrite
 0x6bb0c31c malloc
 0x6bb0c324 realloc
 0x6bb0c32c signal
 0x6bb0c334 sprintf
 0x6bb0c33c strlen
 0x6bb0c344 strncmp
 0x6bb0c34c vfprintf

EAT(Export Address Table) Library

0x6bac169b DllGetClassObject
0x6bac1657 DllMain
0x6bac1695 DllRegisterServer
0x6bac1698 DllUnregisterServer
0x6bac16a4 StartW


Similarity measure (PE file only) - Checking for service failure