Analysis
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max time kernel
151s -
max time network
152s -
platform
windows10-2004_x64 -
resource
win10v2004-20220414-en -
submitted
25-05-2022 01:04
Behavioral task
behavioral1
Sample
f86acc6df5e420b789a906972716d90f1dde00931fb08e0d6b4eed2e9278df5b.exe
Resource
win7-20220414-en
Behavioral task
behavioral2
Sample
f86acc6df5e420b789a906972716d90f1dde00931fb08e0d6b4eed2e9278df5b.exe
Resource
win10v2004-20220414-en
General
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Target
f86acc6df5e420b789a906972716d90f1dde00931fb08e0d6b4eed2e9278df5b.exe
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Size
43KB
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MD5
a2d178df7c63562f930f089abbd6c79c
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SHA1
f320ed2f191f281f0727fbfb128e2c562884d51c
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SHA256
f86acc6df5e420b789a906972716d90f1dde00931fb08e0d6b4eed2e9278df5b
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SHA512
8ab6efb73a597ae8ab0659eb8dbaea2336104b9ccbf35ccb623abdb98c8f6abcf627b36ca9306fec049f3300f10fe8ebb68b3bc3b763785dacd4414bdbe5b64d
Malware Config
Extracted
njrat
Njrat 0.7 Golden By Hassan Amiri
hacker
192.168.0.108:5522
Windows Update
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reg_key
Windows Update
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splitter
|Hassan|
Signatures
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Executes dropped EXE 1 IoCs
Processes:
system32t.exepid process 736 system32t.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
f86acc6df5e420b789a906972716d90f1dde00931fb08e0d6b4eed2e9278df5b.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Control Panel\International\Geo\Nation f86acc6df5e420b789a906972716d90f1dde00931fb08e0d6b4eed2e9278df5b.exe -
Drops startup file 2 IoCs
Processes:
system32t.exedescription ioc process File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Java update.exe system32t.exe File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Java update.exe system32t.exe -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
system32t.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows Update = "\"C:\\Users\\Admin\\AppData\\Roaming\\system32t.exe\" .." system32t.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Windows Update = "\"C:\\Users\\Admin\\AppData\\Roaming\\system32t.exe\" .." system32t.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: GetForegroundWindowSpam 2 IoCs
Processes:
f86acc6df5e420b789a906972716d90f1dde00931fb08e0d6b4eed2e9278df5b.exesystem32t.exepid process 3216 f86acc6df5e420b789a906972716d90f1dde00931fb08e0d6b4eed2e9278df5b.exe 736 system32t.exe -
Suspicious use of AdjustPrivilegeToken 33 IoCs
Processes:
system32t.exedescription pid process Token: SeDebugPrivilege 736 system32t.exe Token: 33 736 system32t.exe Token: SeIncBasePriorityPrivilege 736 system32t.exe Token: 33 736 system32t.exe Token: SeIncBasePriorityPrivilege 736 system32t.exe Token: 33 736 system32t.exe Token: SeIncBasePriorityPrivilege 736 system32t.exe Token: 33 736 system32t.exe Token: SeIncBasePriorityPrivilege 736 system32t.exe Token: 33 736 system32t.exe Token: SeIncBasePriorityPrivilege 736 system32t.exe Token: 33 736 system32t.exe Token: SeIncBasePriorityPrivilege 736 system32t.exe Token: 33 736 system32t.exe Token: SeIncBasePriorityPrivilege 736 system32t.exe Token: 33 736 system32t.exe Token: SeIncBasePriorityPrivilege 736 system32t.exe Token: 33 736 system32t.exe Token: SeIncBasePriorityPrivilege 736 system32t.exe Token: 33 736 system32t.exe Token: SeIncBasePriorityPrivilege 736 system32t.exe Token: 33 736 system32t.exe Token: SeIncBasePriorityPrivilege 736 system32t.exe Token: 33 736 system32t.exe Token: SeIncBasePriorityPrivilege 736 system32t.exe Token: 33 736 system32t.exe Token: SeIncBasePriorityPrivilege 736 system32t.exe Token: 33 736 system32t.exe Token: SeIncBasePriorityPrivilege 736 system32t.exe Token: 33 736 system32t.exe Token: SeIncBasePriorityPrivilege 736 system32t.exe Token: 33 736 system32t.exe Token: SeIncBasePriorityPrivilege 736 system32t.exe -
Suspicious use of WriteProcessMemory 3 IoCs
Processes:
f86acc6df5e420b789a906972716d90f1dde00931fb08e0d6b4eed2e9278df5b.exedescription pid process target process PID 3216 wrote to memory of 736 3216 f86acc6df5e420b789a906972716d90f1dde00931fb08e0d6b4eed2e9278df5b.exe system32t.exe PID 3216 wrote to memory of 736 3216 f86acc6df5e420b789a906972716d90f1dde00931fb08e0d6b4eed2e9278df5b.exe system32t.exe PID 3216 wrote to memory of 736 3216 f86acc6df5e420b789a906972716d90f1dde00931fb08e0d6b4eed2e9278df5b.exe system32t.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\f86acc6df5e420b789a906972716d90f1dde00931fb08e0d6b4eed2e9278df5b.exe"C:\Users\Admin\AppData\Local\Temp\f86acc6df5e420b789a906972716d90f1dde00931fb08e0d6b4eed2e9278df5b.exe"1⤵
- Checks computer location settings
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:3216 -
C:\Users\Admin\AppData\Roaming\system32t.exe"C:\Users\Admin\AppData\Roaming\system32t.exe"2⤵
- Executes dropped EXE
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
PID:736
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Roaming\system32t.exeFilesize
43KB
MD5a2d178df7c63562f930f089abbd6c79c
SHA1f320ed2f191f281f0727fbfb128e2c562884d51c
SHA256f86acc6df5e420b789a906972716d90f1dde00931fb08e0d6b4eed2e9278df5b
SHA5128ab6efb73a597ae8ab0659eb8dbaea2336104b9ccbf35ccb623abdb98c8f6abcf627b36ca9306fec049f3300f10fe8ebb68b3bc3b763785dacd4414bdbe5b64d
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C:\Users\Admin\AppData\Roaming\system32t.exeFilesize
43KB
MD5a2d178df7c63562f930f089abbd6c79c
SHA1f320ed2f191f281f0727fbfb128e2c562884d51c
SHA256f86acc6df5e420b789a906972716d90f1dde00931fb08e0d6b4eed2e9278df5b
SHA5128ab6efb73a597ae8ab0659eb8dbaea2336104b9ccbf35ccb623abdb98c8f6abcf627b36ca9306fec049f3300f10fe8ebb68b3bc3b763785dacd4414bdbe5b64d
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memory/736-131-0x0000000000000000-mapping.dmp
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memory/736-134-0x0000000075470000-0x0000000075A21000-memory.dmpFilesize
5.7MB
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memory/3216-130-0x0000000075470000-0x0000000075A21000-memory.dmpFilesize
5.7MB