Behavioral task
behavioral1
Sample
WeChatApi.dll
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
WeChatApi.dll
Resource
win10v2004-20240508-en
General
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Target
WeChatApi.dll
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Size
5.0MB
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MD5
157c57a92635d9c40ddf2eba58284457
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SHA1
52e10c140fb27849fd2540512cee2771f2fd5649
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SHA256
324198f66360d0cd7a02d80a10f93cc3e68af49c3f791dcdd2f6a3851ca52f89
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SHA512
426925ab44ecbbf2c4a0fe2f4dd29d73b17546a920be1154a4440e78ef6d270b5469f900d2a7d115572102e583388448ed72209e21690d0b4e370cabc446b402
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SSDEEP
98304:0JBv7h2XtZIQipeqGlhAimjMzMMeGStjlyfdvHXx6RBlbXhazbze8cd:U7CZDjqGjAiPzLe5j8lfh+B9X/
Malware Config
Signatures
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resource yara_rule sample vmprotect -
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource WeChatApi.dll
Files
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WeChatApi.dll.dll windows:6 windows x86 arch:x86
2d159fc1f30b697665b8c6b34c4e5151
Headers
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
File Characteristics
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_32BIT_MACHINE
IMAGE_FILE_DLL
Imports
ws2_32
getsockname
wldap32
ord211
crypt32
CertFreeCertificateChain
normaliz
IdnToAscii
kernel32
GetVersionExA
LocalAlloc
LocalFree
GetModuleFileNameW
GetProcessAffinityMask
SetProcessAffinityMask
SetThreadAffinityMask
Sleep
ExitProcess
FreeLibrary
LoadLibraryA
GetModuleHandleA
GetProcAddress
advapi32
RegEnumKeyExW
bcrypt
BCryptGenRandom
dbghelp
SymFromAddr
user32
GetProcessWindowStation
GetUserObjectInformationW
Sections
.text Size: - Virtual size: 3.5MB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: - Virtual size: 836KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: - Virtual size: 75KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.vmp0 Size: - Virtual size: 1.6MB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.vmp1 Size: 5.0MB - Virtual size: 5.0MB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.reloc Size: 1KB - Virtual size: 1KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.rsrc Size: 512B - Virtual size: 233B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ