Behavioral task
behavioral1
Sample
31valo.exe
Resource
win10v2004-20231215-en
Behavioral task
behavioral2
Sample
Guna.UI2.dll
Resource
win10v2004-20231215-en
General
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Target
31valo_Secure.rar
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Size
746KB
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MD5
1927d2ca5005c8e6deb8f9b1ef3ae53f
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SHA1
9ac93604a46bc0b15e1dad28c1212d1c7e8da06f
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SHA256
9c3c4bb68d453d66d5a9a3547379c694dd34eb7004bf6228f68cbdc31c704689
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SHA512
8de2f8def1da073d317328e426514fcf065d014dfc5f81e608c1c87cc0d74ecaca86292c3510ac115867a9336672f2c4c18efab0e96ca04bfcb18370abc52d81
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SSDEEP
12288:TtNqPbmPai11t0XN7bIMe165lZjEC7rJ0E7ZH9m9eIK/tvuQ6BS7gCPKhRbRgBSV:TibQt0XN7bIM8Af7rCeZHk9eIK/luQ6d
Malware Config
Signatures
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Obfuscated with Agile.Net obfuscator 1 IoCs
Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.
resource yara_rule static1/unpack001/Guna.UI2.dll agile_net -
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource unpack001/31valo.exe
Files
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31valo_Secure.rar.rar
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31valo.exe.exe windows:4 windows x64 arch:x64
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_LINE_NUMS_STRIPPED
IMAGE_FILE_LOCAL_SYMS_STRIPPED
IMAGE_FILE_LARGE_ADDRESS_AWARE
Sections
.text Size: 98KB - Virtual size: 98KB
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
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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 Software0d:42:4a:e0:be:3a:88:ff:60:40:21:ce:14:00:f0:ddCertificate
IssuerCN=DigiCert SHA2 Assured ID Timestamping CA,OU=www.digicert.com,O=DigiCert Inc,C=USNot Before01/01/2021, 00:00Not After06/01/2031, 00:00SubjectCN=DigiCert Timestamp 2021,O=DigiCert\, Inc.,C=USExtended Key Usages
ExtKeyUsageTimeStamping
Key Usages
KeyUsageDigitalSignature
0a:a1:25:d6:d6:32:1b:7e:41:e4:05:da:36:97:c2:15Certificate
IssuerCN=DigiCert Assured ID Root CA,OU=www.digicert.com,O=DigiCert Inc,C=USNot Before07/01/2016, 12:00Not After07/01/2031, 12:00SubjectCN=DigiCert SHA2 Assured ID Timestamping CA,OU=www.digicert.com,O=DigiCert Inc,C=USExtended Key Usages
ExtKeyUsageTimeStamping
Key Usages
KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign
6a:b2:82:b9:55:f6:7c:0c:b8:9f:20:db:51:fb:19:4f:e8:aa:e8:58Signer
Actual PE Digest6a:b2:82:b9:55:f6:7c:0c:b8:9f:20:db:51:fb:19:4f:e8:aa:e8:58Digest Algorithmsha1PE Digest MatchestrueHeaders
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_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