Analysis
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max time kernel
174s -
max time network
187s -
platform
windows10-2004_x64 -
resource
win10v2004-20221111-en -
resource tags
arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system -
submitted
03-02-2023 18:52
Static task
static1
Behavioral task
behavioral1
Sample
Loader.exe
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
Loader.exe
Resource
win10v2004-20221111-en
General
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Target
Loader.exe
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Size
1.6MB
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MD5
a44e526804469076d712e8a05ddd7759
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SHA1
7010fda540e70139020a7a79730e74e99bd8e6c9
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SHA256
46d7128963bde013c8ec359b285e47eabbf9c88e332735e02ced518773e8e95f
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SHA512
04c40ef00c80d641c4f7bced8aefc180d695ea23ef79e272167f1a567484be2ab7031ca55a246cbeba1ed0c0ed93223fc2a33daed7f2048c62f169f0e6325b36
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SSDEEP
49152:fBvdZG5o8InNXL9Qn0HpZjI64n2hcyfT2:pFZG5oNnRfh9
Malware Config
Signatures
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Modifies WinLogon for persistence 2 TTPs 1 IoCs
Processes:
Loader.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,\"C:\\Users\\Admin\\AppData\\Roaming\\Google\\Chrome.exe\"," Loader.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
Loader.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Control Panel\International\Geo\Nation Loader.exe -
Legitimate hosting services abused for malware hosting/C2 1 TTPs
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Suspicious use of SetThreadContext 1 IoCs
Processes:
Loader.exedescription pid process target process PID 428 set thread context of 4996 428 Loader.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 12 IoCs
Processes:
powershell.exeMSBuild.exepid process 3268 powershell.exe 3268 powershell.exe 4996 MSBuild.exe 4996 MSBuild.exe 4996 MSBuild.exe 4996 MSBuild.exe 4996 MSBuild.exe 4996 MSBuild.exe 4996 MSBuild.exe 4996 MSBuild.exe 4996 MSBuild.exe 4996 MSBuild.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
Processes:
powershell.exeLoader.exeMSBuild.exedescription pid process Token: SeDebugPrivilege 3268 powershell.exe Token: SeDebugPrivilege 428 Loader.exe Token: SeDebugPrivilege 4996 MSBuild.exe -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
Loader.exedescription pid process target process PID 428 wrote to memory of 3268 428 Loader.exe powershell.exe PID 428 wrote to memory of 3268 428 Loader.exe powershell.exe PID 428 wrote to memory of 4996 428 Loader.exe MSBuild.exe PID 428 wrote to memory of 4996 428 Loader.exe MSBuild.exe PID 428 wrote to memory of 4996 428 Loader.exe MSBuild.exe PID 428 wrote to memory of 4996 428 Loader.exe MSBuild.exe PID 428 wrote to memory of 4996 428 Loader.exe MSBuild.exe PID 428 wrote to memory of 4996 428 Loader.exe MSBuild.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\Loader.exe"C:\Users\Admin\AppData\Local\Temp\Loader.exe"1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMwAyAA==2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\Microsoft.NET\Framework64\v4.0.30319\MSBuild.exeC:\Windows\Microsoft.NET\Framework64\v4.0.30319\MSBuild.exe2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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memory/428-137-0x00007FFD83BB0000-0x00007FFD84671000-memory.dmpFilesize
10.8MB
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memory/428-133-0x00007FFD83BB0000-0x00007FFD84671000-memory.dmpFilesize
10.8MB
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memory/428-134-0x0000013F35200000-0x0000013F35222000-memory.dmpFilesize
136KB
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memory/428-142-0x00007FFD83BB0000-0x00007FFD84671000-memory.dmpFilesize
10.8MB
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memory/428-132-0x0000013F34CF0000-0x0000013F34E92000-memory.dmpFilesize
1.6MB
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memory/3268-138-0x00007FFD83BB0000-0x00007FFD84671000-memory.dmpFilesize
10.8MB
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memory/3268-136-0x00007FFD83BB0000-0x00007FFD84671000-memory.dmpFilesize
10.8MB
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memory/3268-139-0x00007FFD83BB0000-0x00007FFD84671000-memory.dmpFilesize
10.8MB
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memory/3268-135-0x0000000000000000-mapping.dmp
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memory/4996-140-0x0000000000400000-0x000000000048C000-memory.dmpFilesize
560KB
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memory/4996-141-0x0000000000400000-mapping.dmp
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memory/4996-143-0x00007FFD83BB0000-0x00007FFD84671000-memory.dmpFilesize
10.8MB
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memory/4996-144-0x00007FFD83BB0000-0x00007FFD84671000-memory.dmpFilesize
10.8MB