Analysis
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max time kernel
159s -
max time network
180s -
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 19:32
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-1-5-21-4246620582-653642754-1174164128-1000\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-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation Loader.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
Loader.exedescription pid process target process PID 4660 set thread context of 4448 4660 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 4 IoCs
Processes:
powershell.exeMSBuild.exepid process 4388 powershell.exe 4388 powershell.exe 4448 MSBuild.exe 4448 MSBuild.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
Processes:
powershell.exeLoader.exeMSBuild.exedescription pid process Token: SeDebugPrivilege 4388 powershell.exe Token: SeDebugPrivilege 4660 Loader.exe Token: SeDebugPrivilege 4448 MSBuild.exe -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
Loader.exedescription pid process target process PID 4660 wrote to memory of 4388 4660 Loader.exe powershell.exe PID 4660 wrote to memory of 4388 4660 Loader.exe powershell.exe PID 4660 wrote to memory of 4448 4660 Loader.exe MSBuild.exe PID 4660 wrote to memory of 4448 4660 Loader.exe MSBuild.exe PID 4660 wrote to memory of 4448 4660 Loader.exe MSBuild.exe PID 4660 wrote to memory of 4448 4660 Loader.exe MSBuild.exe PID 4660 wrote to memory of 4448 4660 Loader.exe MSBuild.exe PID 4660 wrote to memory of 4448 4660 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
PID:4660 -
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
PID:4388 -
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
PID:4448
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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memory/4388-138-0x00007FF82FA60000-0x00007FF830521000-memory.dmpFilesize
10.8MB
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memory/4388-135-0x0000000000000000-mapping.dmp
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memory/4388-136-0x00007FF82FA60000-0x00007FF830521000-memory.dmpFilesize
10.8MB
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memory/4388-139-0x00007FF82FA60000-0x00007FF830521000-memory.dmpFilesize
10.8MB
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memory/4448-140-0x0000000000400000-0x000000000048C000-memory.dmpFilesize
560KB
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memory/4448-141-0x0000000000400000-mapping.dmp
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memory/4448-143-0x00007FF82FA60000-0x00007FF830521000-memory.dmpFilesize
10.8MB
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memory/4448-144-0x00007FF82FA60000-0x00007FF830521000-memory.dmpFilesize
10.8MB
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memory/4660-133-0x0000021D31DB0000-0x0000021D31DD2000-memory.dmpFilesize
136KB
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memory/4660-134-0x00007FF82FA60000-0x00007FF830521000-memory.dmpFilesize
10.8MB
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memory/4660-137-0x00007FF82FA60000-0x00007FF830521000-memory.dmpFilesize
10.8MB
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memory/4660-132-0x0000021D2FFD0000-0x0000021D30172000-memory.dmpFilesize
1.6MB
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memory/4660-142-0x00007FF82FA60000-0x00007FF830521000-memory.dmpFilesize
10.8MB