Overview
overview
10Static
static
10VenomCrypt...ib.dll
windows7-x64
1VenomCrypt...ib.dll
windows10-2004-x64
1VenomCrypt...or.exe
windows7-x64
10VenomCrypt...or.exe
windows10-2004-x64
10VenomCrypt...er.exe
windows7-x64
1VenomCrypt...er.exe
windows10-2004-x64
1VenomCrypt...I2.dll
windows7-x64
1VenomCrypt...I2.dll
windows10-2004-x64
1VenomCrypt...or.dll
windows7-x64
1VenomCrypt...or.dll
windows10-2004-x64
1VenomCrypt...er.exe
windows7-x64
10VenomCrypt...er.exe
windows10-2004-x64
10Behavioral task
behavioral1
Sample
VenomCrypter/Core/dnlib.dll
Resource
win7-20231201-en
Behavioral task
behavioral2
Sample
VenomCrypter/Core/dnlib.dll
Resource
win10v2004-20231127-en
Behavioral task
behavioral3
Sample
VenomCrypter/Core/dotnetreactor.exe
Resource
win7-20231023-en
Behavioral task
behavioral4
Sample
VenomCrypter/Core/dotnetreactor.exe
Resource
win10v2004-20231130-en
Behavioral task
behavioral5
Sample
VenomCrypter/Core/venom_crypter.exe
Resource
win7-20231025-en
Behavioral task
behavioral6
Sample
VenomCrypter/Core/venom_crypter.exe
Resource
win10v2004-20231130-en
Behavioral task
behavioral7
Sample
VenomCrypter/Guna.UI2.dll
Resource
win7-20231130-en
Behavioral task
behavioral8
Sample
VenomCrypter/Guna.UI2.dll
Resource
win10v2004-20231127-en
Behavioral task
behavioral9
Sample
VenomCrypter/SimpleObfuscator.dll
Resource
win7-20231023-en
Behavioral task
behavioral10
Sample
VenomCrypter/SimpleObfuscator.dll
Resource
win10v2004-20231127-en
Behavioral task
behavioral11
Sample
VenomCrypter/VenomCrypter.exe
Resource
win7-20231201-en
General
-
Target
VenomCrypter.zip
-
Size
13.1MB
-
MD5
6339a9df99f4fea3c2ab1afc78e879d9
-
SHA1
4ee6cc1d50730b5d48a878e4572b9958352a0755
-
SHA256
53c401f24e24cbe77b405737d35a12daed24ab8840abcfec197b9e8b5c7ff312
-
SHA512
404a6312bb344529f600193f31f2741e67ccdfb7d6d12627bd52664b89a664aee00527e20f620276ccf6082c749f3176d5bac7351fbb4e643f76127800b271bc
-
SSDEEP
393216:qxd4xvvYsd08zltBx0GLTN2R9hopFtUh1a:gKrzlXx13NK9+eXa
Malware Config
Signatures
-
AgentTesla payload 1 IoCs
Processes:
resource yara_rule static1/unpack001/VenomCrypter/Guna.UI2.dll family_agenttesla -
Agenttesla family
-
Detect ZGRat V1 1 IoCs
Processes:
resource yara_rule static1/unpack001/VenomCrypter/Core/dotnetreactor.exe family_zgrat_v1 -
Zgrat family
-
.NET Reactor proctector 1 IoCs
Detects an executable protected by an unregistered version of Eziriz's .NET Reactor.
Processes:
resource yara_rule static1/unpack001/VenomCrypter/Core/dotnetreactor.exe net_reactor -
Unsigned PE 5 IoCs
Checks for missing Authenticode signature.
Processes:
resource unpack001/VenomCrypter/Core/dnlib.dll unpack001/VenomCrypter/Core/dotnetreactor.exe unpack001/VenomCrypter/Core/venom_crypter.exe unpack001/VenomCrypter/SimpleObfuscator.dll unpack001/VenomCrypter/VenomCrypter.exe
Files
-
VenomCrypter.zip.zip
-
VenomCrypter/Core/dnlib.dll.dll windows:4 windows x86 arch:x86
dae02f32a21e03ce65412f6e56942daa
Headers
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_NO_SEH
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE
File Characteristics
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE
IMAGE_FILE_DLL
Imports
mscoree
_CorDllMain
Sections
.text Size: 1.1MB - Virtual size: 1.1MB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rsrc Size: 1KB - Virtual size: 1KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 512B - Virtual size: 12B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
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VenomCrypter/Core/dotnetreactor.exe.exe windows:4 windows x86 arch:x86
f34d5f2d4577ed6d9ceec516c1f5a744
Headers
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_NO_SEH
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE
File Characteristics
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LINE_NUMS_STRIPPED
IMAGE_FILE_LOCAL_SYMS_STRIPPED
IMAGE_FILE_LARGE_ADDRESS_AWARE
IMAGE_FILE_32BIT_MACHINE
Imports
mscoree
_CorExeMain
Sections
.text Size: 14.3MB - Virtual size: 14.3MB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rsrc Size: 58KB - Virtual size: 57KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 512B - Virtual size: 12B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
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VenomCrypter/Core/venom_crypter.exe.exe windows:4 windows x86 arch:x86
f34d5f2d4577ed6d9ceec516c1f5a744
Headers
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_NO_SEH
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE
File Characteristics
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE
Imports
mscoree
_CorExeMain
Sections
.text Size: 105KB - Virtual size: 104KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rsrc Size: 1024B - Virtual size: 900B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 512B - Virtual size: 12B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
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VenomCrypter/Guna.UI2.dll.dll windows:4 windows x86 arch:x86
dae02f32a21e03ce65412f6e56942daa
Code Sign
7a:98:1b:7d:3e:b4:86:bb:45:84:c4:3c:c9:a8:3f:dbCertificate
IssuerCN=Sobatdata Root CANot Before23-10-2019 05:22Not After22-10-2025 17:00SubjectCN=Sobatdata Software0e:9b:18:8e:f9:d0:2d:e7:ef:db:50:e2:08:40:18:5aCertificate
IssuerCN=DigiCert Assured ID Root CA,OU=www.digicert.com,O=DigiCert Inc,C=USNot Before01-08-2022 00:00Not After09-11-2031 23:59SubjectCN=DigiCert Trusted Root G4,OU=www.digicert.com,O=DigiCert Inc,C=USKey Usages
KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign
07:36:37:b7:24:54:7c:d8:47:ac:fd:28:66:2a:5e:5bCertificate
IssuerCN=DigiCert Trusted Root G4,OU=www.digicert.com,O=DigiCert Inc,C=USNot Before23-03-2022 00:00Not After22-03-2037 23:59SubjectCN=DigiCert Trusted G4 RSA4096 SHA256 TimeStamping CA,O=DigiCert\, Inc.,C=USExtended Key Usages
ExtKeyUsageTimeStamping
Key Usages
KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign
05:44:af:f3:94:9d:08:39:a6:bf:db:3f:5f:e5:61:16Certificate
IssuerCN=DigiCert Trusted G4 RSA4096 SHA256 TimeStamping CA,O=DigiCert\, Inc.,C=USNot Before14-07-2023 00:00Not After13-10-2034 23:59SubjectCN=DigiCert Timestamp 2023,O=DigiCert\, Inc.,C=USExtended Key Usages
ExtKeyUsageTimeStamping
Key Usages
KeyUsageDigitalSignature
a1:02:21:ee:07:c6:a0:d6:63:b6:2b:15:80:7b:83:b5:46:eb:8a:ebSigner
Actual PE Digesta1:02:21:ee:07:c6:a0:d6:63:b6:2b:15:80:7b:83:b5:46:eb:8a:ebDigest Algorithmsha1PE Digest MatchestrueHeaders
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_NO_SEH
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE
File Characteristics
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE
IMAGE_FILE_DLL
Imports
mscoree
_CorDllMain
Sections
.text Size: 2.1MB - Virtual size: 2.1MB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rsrc Size: 1KB - Virtual size: 1KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 512B - Virtual size: 12B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
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VenomCrypter/SimpleObfuscator.dll.dll windows:4 windows x86 arch:x86
dae02f32a21e03ce65412f6e56942daa
Headers
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_NO_SEH
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE
File Characteristics
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_DLL
Imports
mscoree
_CorDllMain
Sections
.text Size: 1.4MB - Virtual size: 1.4MB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rsrc Size: 1024B - Virtual size: 948B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 512B - Virtual size: 12B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
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VenomCrypter/VenomCrypter.exe.exe windows:4 windows x86 arch:x86
f34d5f2d4577ed6d9ceec516c1f5a744
Headers
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_NO_SEH
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE
File Characteristics
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE
IMAGE_FILE_32BIT_MACHINE
Imports
mscoree
_CorExeMain
Sections
.text Size: 989KB - Virtual size: 989KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rsrc Size: 4KB - Virtual size: 4KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 512B - Virtual size: 12B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ