Analysis
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max time kernel
60s -
max time network
128s -
platform
windows10-1703_x64 -
resource
win10-20220812-en -
resource tags
arch:x64arch:x86image:win10-20220812-enlocale:en-usos:windows10-1703-x64system -
submitted
25-11-2022 08:16
Static task
static1
Behavioral task
behavioral1
Sample
f99b9801f01ee7b4b5ca8512e4e7ddaed8cadddde95c3f0ecbd217fc5620fbca.exe
Resource
win10-20220812-en
General
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Target
f99b9801f01ee7b4b5ca8512e4e7ddaed8cadddde95c3f0ecbd217fc5620fbca.exe
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Size
416KB
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MD5
b8259ed6a4fd55a02c9740361cc2db3d
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SHA1
d9ecc123a139e9900d88a0eda4ad5c78f2a3214c
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SHA256
f99b9801f01ee7b4b5ca8512e4e7ddaed8cadddde95c3f0ecbd217fc5620fbca
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SHA512
280439e8a794e437dbebbf8a408498b7028914abb18b4ba24071c22e5ee29bd77adc1b210b0de6968c9db0f32fa47cffad4e2689c754587b028442d40a67d305
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SSDEEP
1536:76BrBvzYJ7/4RzeeptZrd8FjGhDji2KGtc8w0N1rlmVcl:76oJYzHZx8FCDXncszJ8Y
Malware Config
Signatures
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Snake Keylogger
Keylogger and Infostealer first seen in November 2020.
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Snake Keylogger payload 2 IoCs
Processes:
resource yara_rule behavioral1/memory/4240-291-0x000000000042019E-mapping.dmp family_snakekeylogger behavioral1/memory/4240-325-0x0000000000400000-0x0000000000426000-memory.dmp family_snakekeylogger -
Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
Processes:
MSBuild.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-3844063266-715245855-4050956231-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 MSBuild.exe Key opened \REGISTRY\USER\S-1-5-21-3844063266-715245855-4050956231-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 MSBuild.exe Key opened \REGISTRY\USER\S-1-5-21-3844063266-715245855-4050956231-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 MSBuild.exe -
Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
Processes:
flow ioc 7 checkip.dyndns.org -
Suspicious use of SetThreadContext 1 IoCs
Processes:
f99b9801f01ee7b4b5ca8512e4e7ddaed8cadddde95c3f0ecbd217fc5620fbca.exedescription pid process target process PID 2476 set thread context of 4240 2476 f99b9801f01ee7b4b5ca8512e4e7ddaed8cadddde95c3f0ecbd217fc5620fbca.exe MSBuild.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
powershell.exeMSBuild.exepid process 340 powershell.exe 340 powershell.exe 340 powershell.exe 4240 MSBuild.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
Processes:
f99b9801f01ee7b4b5ca8512e4e7ddaed8cadddde95c3f0ecbd217fc5620fbca.exepowershell.exeMSBuild.exedescription pid process Token: SeDebugPrivilege 2476 f99b9801f01ee7b4b5ca8512e4e7ddaed8cadddde95c3f0ecbd217fc5620fbca.exe Token: SeDebugPrivilege 340 powershell.exe Token: SeDebugPrivilege 4240 MSBuild.exe -
Suspicious use of WriteProcessMemory 11 IoCs
Processes:
f99b9801f01ee7b4b5ca8512e4e7ddaed8cadddde95c3f0ecbd217fc5620fbca.exedescription pid process target process PID 2476 wrote to memory of 340 2476 f99b9801f01ee7b4b5ca8512e4e7ddaed8cadddde95c3f0ecbd217fc5620fbca.exe powershell.exe PID 2476 wrote to memory of 340 2476 f99b9801f01ee7b4b5ca8512e4e7ddaed8cadddde95c3f0ecbd217fc5620fbca.exe powershell.exe PID 2476 wrote to memory of 340 2476 f99b9801f01ee7b4b5ca8512e4e7ddaed8cadddde95c3f0ecbd217fc5620fbca.exe powershell.exe PID 2476 wrote to memory of 4240 2476 f99b9801f01ee7b4b5ca8512e4e7ddaed8cadddde95c3f0ecbd217fc5620fbca.exe MSBuild.exe PID 2476 wrote to memory of 4240 2476 f99b9801f01ee7b4b5ca8512e4e7ddaed8cadddde95c3f0ecbd217fc5620fbca.exe MSBuild.exe PID 2476 wrote to memory of 4240 2476 f99b9801f01ee7b4b5ca8512e4e7ddaed8cadddde95c3f0ecbd217fc5620fbca.exe MSBuild.exe PID 2476 wrote to memory of 4240 2476 f99b9801f01ee7b4b5ca8512e4e7ddaed8cadddde95c3f0ecbd217fc5620fbca.exe MSBuild.exe PID 2476 wrote to memory of 4240 2476 f99b9801f01ee7b4b5ca8512e4e7ddaed8cadddde95c3f0ecbd217fc5620fbca.exe MSBuild.exe PID 2476 wrote to memory of 4240 2476 f99b9801f01ee7b4b5ca8512e4e7ddaed8cadddde95c3f0ecbd217fc5620fbca.exe MSBuild.exe PID 2476 wrote to memory of 4240 2476 f99b9801f01ee7b4b5ca8512e4e7ddaed8cadddde95c3f0ecbd217fc5620fbca.exe MSBuild.exe PID 2476 wrote to memory of 4240 2476 f99b9801f01ee7b4b5ca8512e4e7ddaed8cadddde95c3f0ecbd217fc5620fbca.exe MSBuild.exe -
outlook_office_path 1 IoCs
Processes:
MSBuild.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-3844063266-715245855-4050956231-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 MSBuild.exe -
outlook_win_path 1 IoCs
Processes:
MSBuild.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-3844063266-715245855-4050956231-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 MSBuild.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\f99b9801f01ee7b4b5ca8512e4e7ddaed8cadddde95c3f0ecbd217fc5620fbca.exe"C:\Users\Admin\AppData\Local\Temp\f99b9801f01ee7b4b5ca8512e4e7ddaed8cadddde95c3f0ecbd217fc5620fbca.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2476 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAAMQA1AA==2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:340 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exeC:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:4240