Analysis
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max time kernel
151s -
max time network
155s -
platform
windows10-2004_x64 -
resource
win10v2004-20220721-en -
resource tags
arch:x64arch:x86image:win10v2004-20220721-enlocale:en-usos:windows10-2004-x64system -
submitted
10-08-2022 11:11
Behavioral task
behavioral1
Sample
03d42b442504337342a1e4a50c1cd6e1.exe
Resource
win7-20220715-en
Behavioral task
behavioral2
Sample
03d42b442504337342a1e4a50c1cd6e1.exe
Resource
win10v2004-20220721-en
General
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Target
03d42b442504337342a1e4a50c1cd6e1.exe
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Size
37KB
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MD5
03d42b442504337342a1e4a50c1cd6e1
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SHA1
8a9a9cb36183a30e7fc72e9202351af3ac673ea1
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SHA256
6ba6b4903ea4866951dd17956a816065f37face5a89c72d3878870c67df9ff0c
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SHA512
ed65ecef63f80a4c22d4df48c44ae51b75c50f86d22c8492fe992dc6ce68e48f930f89b62afd197b8fd9e3d02e33468e10ded3d807184e0aad5c086f28bad681
Malware Config
Extracted
njrat
im523
HacKed
0.tcp.eu.ngrok.io:10809
4da733041df828afcc3b187c0133995e
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reg_key
4da733041df828afcc3b187c0133995e
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splitter
|'|'|
Signatures
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Executes dropped EXE 1 IoCs
Processes:
System.exepid process 1244 System.exe -
Modifies Windows Firewall 1 TTPs 1 IoCs
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
03d42b442504337342a1e4a50c1cd6e1.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-2372564722-193526734-2636556182-1000\Control Panel\International\Geo\Nation 03d42b442504337342a1e4a50c1cd6e1.exe -
Drops startup file 2 IoCs
Processes:
System.exedescription ioc process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\4da733041df828afcc3b187c0133995e.exe System.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\4da733041df828afcc3b187c0133995e.exe System.exe -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
System.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2372564722-193526734-2636556182-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\4da733041df828afcc3b187c0133995e = "\"C:\\Windows\\System.exe\" .." System.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\4da733041df828afcc3b187c0133995e = "\"C:\\Windows\\System.exe\" .." System.exe -
Drops autorun.inf file 1 TTPs 3 IoCs
Malware can abuse Windows Autorun to spread further via attached volumes.
Processes:
System.exedescription ioc process File created C:\autorun.inf System.exe File opened for modification C:\autorun.inf System.exe File created D:\autorun.inf System.exe -
Drops file in Windows directory 3 IoCs
Processes:
03d42b442504337342a1e4a50c1cd6e1.exeSystem.exedescription ioc process File created C:\Windows\System.exe 03d42b442504337342a1e4a50c1cd6e1.exe File opened for modification C:\Windows\System.exe 03d42b442504337342a1e4a50c1cd6e1.exe File opened for modification C:\Windows\System.exe System.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 64 IoCs
Processes:
System.exepid process 1244 System.exe 1244 System.exe 1244 System.exe 1244 System.exe 1244 System.exe 1244 System.exe 1244 System.exe 1244 System.exe 1244 System.exe 1244 System.exe 1244 System.exe 1244 System.exe 1244 System.exe 1244 System.exe 1244 System.exe 1244 System.exe 1244 System.exe 1244 System.exe 1244 System.exe 1244 System.exe 1244 System.exe 1244 System.exe 1244 System.exe 1244 System.exe 1244 System.exe 1244 System.exe 1244 System.exe 1244 System.exe 1244 System.exe 1244 System.exe 1244 System.exe 1244 System.exe 1244 System.exe 1244 System.exe 1244 System.exe 1244 System.exe 1244 System.exe 1244 System.exe 1244 System.exe 1244 System.exe 1244 System.exe 1244 System.exe 1244 System.exe 1244 System.exe 1244 System.exe 1244 System.exe 1244 System.exe 1244 System.exe 1244 System.exe 1244 System.exe 1244 System.exe 1244 System.exe 1244 System.exe 1244 System.exe 1244 System.exe 1244 System.exe 1244 System.exe 1244 System.exe 1244 System.exe 1244 System.exe 1244 System.exe 1244 System.exe 1244 System.exe 1244 System.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
System.exepid process 1244 System.exe -
Suspicious use of AdjustPrivilegeToken 33 IoCs
Processes:
System.exedescription pid process Token: SeDebugPrivilege 1244 System.exe Token: 33 1244 System.exe Token: SeIncBasePriorityPrivilege 1244 System.exe Token: 33 1244 System.exe Token: SeIncBasePriorityPrivilege 1244 System.exe Token: 33 1244 System.exe Token: SeIncBasePriorityPrivilege 1244 System.exe Token: 33 1244 System.exe Token: SeIncBasePriorityPrivilege 1244 System.exe Token: 33 1244 System.exe Token: SeIncBasePriorityPrivilege 1244 System.exe Token: 33 1244 System.exe Token: SeIncBasePriorityPrivilege 1244 System.exe Token: 33 1244 System.exe Token: SeIncBasePriorityPrivilege 1244 System.exe Token: 33 1244 System.exe Token: SeIncBasePriorityPrivilege 1244 System.exe Token: 33 1244 System.exe Token: SeIncBasePriorityPrivilege 1244 System.exe Token: 33 1244 System.exe Token: SeIncBasePriorityPrivilege 1244 System.exe Token: 33 1244 System.exe Token: SeIncBasePriorityPrivilege 1244 System.exe Token: 33 1244 System.exe Token: SeIncBasePriorityPrivilege 1244 System.exe Token: 33 1244 System.exe Token: SeIncBasePriorityPrivilege 1244 System.exe Token: 33 1244 System.exe Token: SeIncBasePriorityPrivilege 1244 System.exe Token: 33 1244 System.exe Token: SeIncBasePriorityPrivilege 1244 System.exe Token: 33 1244 System.exe Token: SeIncBasePriorityPrivilege 1244 System.exe -
Suspicious use of WriteProcessMemory 6 IoCs
Processes:
03d42b442504337342a1e4a50c1cd6e1.exeSystem.exedescription pid process target process PID 220 wrote to memory of 1244 220 03d42b442504337342a1e4a50c1cd6e1.exe System.exe PID 220 wrote to memory of 1244 220 03d42b442504337342a1e4a50c1cd6e1.exe System.exe PID 220 wrote to memory of 1244 220 03d42b442504337342a1e4a50c1cd6e1.exe System.exe PID 1244 wrote to memory of 3924 1244 System.exe netsh.exe PID 1244 wrote to memory of 3924 1244 System.exe netsh.exe PID 1244 wrote to memory of 3924 1244 System.exe netsh.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\03d42b442504337342a1e4a50c1cd6e1.exe"C:\Users\Admin\AppData\Local\Temp\03d42b442504337342a1e4a50c1cd6e1.exe"1⤵
- Checks computer location settings
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
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C:\Windows\System.exe"C:\Windows\System.exe"2⤵
- Executes dropped EXE
- Drops startup file
- Adds Run key to start application
- Drops autorun.inf file
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\netsh.exenetsh firewall add allowedprogram "C:\Windows\System.exe" "System.exe" ENABLE3⤵
- Modifies Windows Firewall
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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C:\Windows\System.exeFilesize
37KB
MD503d42b442504337342a1e4a50c1cd6e1
SHA18a9a9cb36183a30e7fc72e9202351af3ac673ea1
SHA2566ba6b4903ea4866951dd17956a816065f37face5a89c72d3878870c67df9ff0c
SHA512ed65ecef63f80a4c22d4df48c44ae51b75c50f86d22c8492fe992dc6ce68e48f930f89b62afd197b8fd9e3d02e33468e10ded3d807184e0aad5c086f28bad681
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C:\Windows\System.exeFilesize
37KB
MD503d42b442504337342a1e4a50c1cd6e1
SHA18a9a9cb36183a30e7fc72e9202351af3ac673ea1
SHA2566ba6b4903ea4866951dd17956a816065f37face5a89c72d3878870c67df9ff0c
SHA512ed65ecef63f80a4c22d4df48c44ae51b75c50f86d22c8492fe992dc6ce68e48f930f89b62afd197b8fd9e3d02e33468e10ded3d807184e0aad5c086f28bad681
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memory/220-130-0x0000000075550000-0x0000000075B01000-memory.dmpFilesize
5.7MB
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memory/220-134-0x0000000075550000-0x0000000075B01000-memory.dmpFilesize
5.7MB
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memory/1244-131-0x0000000000000000-mapping.dmp
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memory/1244-135-0x0000000075550000-0x0000000075B01000-memory.dmpFilesize
5.7MB
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memory/1244-137-0x0000000075550000-0x0000000075B01000-memory.dmpFilesize
5.7MB
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memory/3924-136-0x0000000000000000-mapping.dmp