Analysis
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max time kernel
149s -
max time network
152s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
14/03/2024, 21:30
Static task
static1
Behavioral task
behavioral1
Sample
8cc2c07649288c67b8e46f78ac322a427589a4e3a86ff33fd4706a6f82ccf1f2.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
8cc2c07649288c67b8e46f78ac322a427589a4e3a86ff33fd4706a6f82ccf1f2.exe
Resource
win10v2004-20240226-en
General
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Target
8cc2c07649288c67b8e46f78ac322a427589a4e3a86ff33fd4706a6f82ccf1f2.exe
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Size
71KB
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MD5
3958389fbf8a547e3414307c8e9b3e15
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SHA1
73b064cffaa0191467343b1df1dbc46ff3e053be
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SHA256
8cc2c07649288c67b8e46f78ac322a427589a4e3a86ff33fd4706a6f82ccf1f2
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SHA512
790af8531ccedf244d54fde8ff3cf560a8ea9ae14dcc2a7105ff53caef11b5ade2644c928aa93e6bb16f5c7f76bdd391971d422419e3790e1b629911cd1217e2
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SSDEEP
768:OrItKyw5WHXfQmjIiIk9ecAakMb96ZyXuDLdibfffsffff2ZZZZD:Or3Z5IfQmv81abyyXcZibfffsffffA
Malware Config
Signatures
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Detects Windows executables referencing non-Windows User-Agents 1 IoCs
resource yara_rule behavioral2/files/0x000400000001e980-2.dat INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA -
Sets file to hidden 1 TTPs 1 IoCs
Modifies file attributes to stop it showing in Explorer etc.
pid Process 2064 attrib.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-3270530367-132075249-2153716227-1000\Control Panel\International\Geo\Nation 8cc2c07649288c67b8e46f78ac322a427589a4e3a86ff33fd4706a6f82ccf1f2.exe -
Executes dropped EXE 1 IoCs
pid Process 3184 smahost.exe -
Drops file in Windows directory 3 IoCs
description ioc Process File created C:\Windows\Debug\smahost.exe 8cc2c07649288c67b8e46f78ac322a427589a4e3a86ff33fd4706a6f82ccf1f2.exe File opened for modification C:\Windows\Debug\smahost.exe 8cc2c07649288c67b8e46f78ac322a427589a4e3a86ff33fd4706a6f82ccf1f2.exe File opened for modification C:\Windows\Debug\smahost.exe attrib.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeIncBasePriorityPrivilege 944 8cc2c07649288c67b8e46f78ac322a427589a4e3a86ff33fd4706a6f82ccf1f2.exe -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 944 wrote to memory of 2064 944 8cc2c07649288c67b8e46f78ac322a427589a4e3a86ff33fd4706a6f82ccf1f2.exe 89 PID 944 wrote to memory of 2064 944 8cc2c07649288c67b8e46f78ac322a427589a4e3a86ff33fd4706a6f82ccf1f2.exe 89 PID 944 wrote to memory of 2064 944 8cc2c07649288c67b8e46f78ac322a427589a4e3a86ff33fd4706a6f82ccf1f2.exe 89 PID 944 wrote to memory of 3720 944 8cc2c07649288c67b8e46f78ac322a427589a4e3a86ff33fd4706a6f82ccf1f2.exe 95 PID 944 wrote to memory of 3720 944 8cc2c07649288c67b8e46f78ac322a427589a4e3a86ff33fd4706a6f82ccf1f2.exe 95 PID 944 wrote to memory of 3720 944 8cc2c07649288c67b8e46f78ac322a427589a4e3a86ff33fd4706a6f82ccf1f2.exe 95 -
Views/modifies file attributes 1 TTPs 1 IoCs
pid Process 2064 attrib.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\8cc2c07649288c67b8e46f78ac322a427589a4e3a86ff33fd4706a6f82ccf1f2.exe"C:\Users\Admin\AppData\Local\Temp\8cc2c07649288c67b8e46f78ac322a427589a4e3a86ff33fd4706a6f82ccf1f2.exe"1⤵
- Checks computer location settings
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:944 -
C:\Windows\SysWOW64\attrib.exeattrib +a +s +h +r C:\Windows\Debug\smahost.exe2⤵
- Sets file to hidden
- Drops file in Windows directory
- Views/modifies file attributes
PID:2064
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\8CC2C0~1.EXE > nul2⤵PID:3720
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C:\Windows\Debug\smahost.exeC:\Windows\Debug\smahost.exe1⤵
- Executes dropped EXE
PID:3184
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
71KB
MD5e604123aa4c9b015ee376960c63786c7
SHA1f09b03547d3a95b7aa81d0cb9979406e69263368
SHA2562761db6617d507c20f52b21dead0ffdcaa83d9b87277c118566642a0153b45d7
SHA512606876eb83c67f8126501cefab735cb420b591a83e65a905b171dbf363a746ddcfd330c16a272fb08eddc4daf70a87390172188a9db8da9c4d90ce1e96ad9c44