Analysis
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max time kernel
151s -
max time network
153s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
20-09-2022 20:40
Behavioral task
behavioral1
Sample
8f04eb500e66a053fa3e6e8a9900e94e794218253a172265c3a881db6f65faf4.exe
Resource
win10v2004-20220812-en
General
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Target
8f04eb500e66a053fa3e6e8a9900e94e794218253a172265c3a881db6f65faf4.exe
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Size
27KB
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MD5
47bea8a28b1e81e3342d594fc57acd8e
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SHA1
d301e8985e53b7baabf9b45df087a017e3817742
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SHA256
8f04eb500e66a053fa3e6e8a9900e94e794218253a172265c3a881db6f65faf4
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SHA512
d5f2bfa425fa0c8d7fe2531b57ed9dbe5ca9b8bb8b7a868e39b251182446a22bcf01c3181d17b3362bc2a76b56cda1e504db2436fafbf922ee2120f76e8d00b6
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SSDEEP
384:2LBH6uj/+AU9038hfOexuaP39hRnMYAQk93vmhm7UMKmIEecKdbXTzm9bVhcaL62:wBa0mkspJtyYA/vMHTi9bD
Malware Config
Extracted
njrat
v4.0
HacKed
216.250.251.104:2028
Windows
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reg_key
Windows
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splitter
|-F-|
Signatures
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Executes dropped EXE 1 IoCs
Processes:
Payload.exepid process 4952 Payload.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
8f04eb500e66a053fa3e6e8a9900e94e794218253a172265c3a881db6f65faf4.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation 8f04eb500e66a053fa3e6e8a9900e94e794218253a172265c3a881db6f65faf4.exe -
Drops startup file 2 IoCs
Processes:
8f04eb500e66a053fa3e6e8a9900e94e794218253a172265c3a881db6f65faf4.exePayload.exedescription ioc process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Windows.lnk 8f04eb500e66a053fa3e6e8a9900e94e794218253a172265c3a881db6f65faf4.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Windows.lnk Payload.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
8f04eb500e66a053fa3e6e8a9900e94e794218253a172265c3a881db6f65faf4.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows2 = "C:\\Users\\Admin\\AppData\\Roaming\\Payload.exe" 8f04eb500e66a053fa3e6e8a9900e94e794218253a172265c3a881db6f65faf4.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Suspicious use of AdjustPrivilegeToken 33 IoCs
Processes:
Payload.exedescription pid process Token: SeDebugPrivilege 4952 Payload.exe Token: 33 4952 Payload.exe Token: SeIncBasePriorityPrivilege 4952 Payload.exe Token: 33 4952 Payload.exe Token: SeIncBasePriorityPrivilege 4952 Payload.exe Token: 33 4952 Payload.exe Token: SeIncBasePriorityPrivilege 4952 Payload.exe Token: 33 4952 Payload.exe Token: SeIncBasePriorityPrivilege 4952 Payload.exe Token: 33 4952 Payload.exe Token: SeIncBasePriorityPrivilege 4952 Payload.exe Token: 33 4952 Payload.exe Token: SeIncBasePriorityPrivilege 4952 Payload.exe Token: 33 4952 Payload.exe Token: SeIncBasePriorityPrivilege 4952 Payload.exe Token: 33 4952 Payload.exe Token: SeIncBasePriorityPrivilege 4952 Payload.exe Token: 33 4952 Payload.exe Token: SeIncBasePriorityPrivilege 4952 Payload.exe Token: 33 4952 Payload.exe Token: SeIncBasePriorityPrivilege 4952 Payload.exe Token: 33 4952 Payload.exe Token: SeIncBasePriorityPrivilege 4952 Payload.exe Token: 33 4952 Payload.exe Token: SeIncBasePriorityPrivilege 4952 Payload.exe Token: 33 4952 Payload.exe Token: SeIncBasePriorityPrivilege 4952 Payload.exe Token: 33 4952 Payload.exe Token: SeIncBasePriorityPrivilege 4952 Payload.exe Token: 33 4952 Payload.exe Token: SeIncBasePriorityPrivilege 4952 Payload.exe Token: 33 4952 Payload.exe Token: SeIncBasePriorityPrivilege 4952 Payload.exe -
Suspicious use of WriteProcessMemory 6 IoCs
Processes:
8f04eb500e66a053fa3e6e8a9900e94e794218253a172265c3a881db6f65faf4.exedescription pid process target process PID 3700 wrote to memory of 4952 3700 8f04eb500e66a053fa3e6e8a9900e94e794218253a172265c3a881db6f65faf4.exe Payload.exe PID 3700 wrote to memory of 4952 3700 8f04eb500e66a053fa3e6e8a9900e94e794218253a172265c3a881db6f65faf4.exe Payload.exe PID 3700 wrote to memory of 4952 3700 8f04eb500e66a053fa3e6e8a9900e94e794218253a172265c3a881db6f65faf4.exe Payload.exe PID 3700 wrote to memory of 2340 3700 8f04eb500e66a053fa3e6e8a9900e94e794218253a172265c3a881db6f65faf4.exe attrib.exe PID 3700 wrote to memory of 2340 3700 8f04eb500e66a053fa3e6e8a9900e94e794218253a172265c3a881db6f65faf4.exe attrib.exe PID 3700 wrote to memory of 2340 3700 8f04eb500e66a053fa3e6e8a9900e94e794218253a172265c3a881db6f65faf4.exe attrib.exe -
Views/modifies file attributes 1 TTPs 1 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\8f04eb500e66a053fa3e6e8a9900e94e794218253a172265c3a881db6f65faf4.exe"C:\Users\Admin\AppData\Local\Temp\8f04eb500e66a053fa3e6e8a9900e94e794218253a172265c3a881db6f65faf4.exe"1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Roaming\Payload.exe"C:\Users\Admin\AppData\Roaming\Payload.exe"2⤵
- Executes dropped EXE
- Drops startup file
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\attrib.exeattrib +h +r +s "C:\Users\Admin\AppData\Roaming\Payload.exe"2⤵
- Views/modifies file attributes
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Windows.lnkFilesize
1KB
MD5c87a0c01932e2b874bc3b392253a663a
SHA151422af62636aaaedfccbe8e4f49ffc027a90989
SHA2568a2b0b8a4e2bd3a1d8bad6ccd1dd2b92561b9abb7156b6701a6190458507795c
SHA512ffd135cebd6e00bb32e0fba5361554e617af27556022ab3cb04c43eae8121ebd17d3868bef382061d7cbc993e805e1501bd580bdcead8f77b44f8889ac14c0a8
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C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\Windows.lnkFilesize
1KB
MD5586210e5f1de944d08dd141fcadd408a
SHA10b539a283bfe6c23839a5c44f668af3ae205288d
SHA25690a7d4cf6b4f075b45da710cf2f1fdfa71d0a654beb240fb74ff968ead06f742
SHA5124a2ffa2d32f1bbcbfb1d0d76509717b9088ccb99557e47b03b03277524d4f1c6bc419dd91537ffd7e8fee7e427c017de3bec88c80c21c326388efe45c3dccca6
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C:\Users\Admin\AppData\Roaming\Payload.exeFilesize
27KB
MD547bea8a28b1e81e3342d594fc57acd8e
SHA1d301e8985e53b7baabf9b45df087a017e3817742
SHA2568f04eb500e66a053fa3e6e8a9900e94e794218253a172265c3a881db6f65faf4
SHA512d5f2bfa425fa0c8d7fe2531b57ed9dbe5ca9b8bb8b7a868e39b251182446a22bcf01c3181d17b3362bc2a76b56cda1e504db2436fafbf922ee2120f76e8d00b6
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C:\Users\Admin\AppData\Roaming\Payload.exeFilesize
27KB
MD547bea8a28b1e81e3342d594fc57acd8e
SHA1d301e8985e53b7baabf9b45df087a017e3817742
SHA2568f04eb500e66a053fa3e6e8a9900e94e794218253a172265c3a881db6f65faf4
SHA512d5f2bfa425fa0c8d7fe2531b57ed9dbe5ca9b8bb8b7a868e39b251182446a22bcf01c3181d17b3362bc2a76b56cda1e504db2436fafbf922ee2120f76e8d00b6
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memory/2340-138-0x0000000000000000-mapping.dmp
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memory/3700-132-0x0000000000E00000-0x0000000000E0E000-memory.dmpFilesize
56KB
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memory/3700-133-0x00000000057C0000-0x000000000585C000-memory.dmpFilesize
624KB
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memory/3700-134-0x0000000006610000-0x0000000006BB4000-memory.dmpFilesize
5.6MB
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memory/4952-135-0x0000000000000000-mapping.dmp
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memory/4952-141-0x00000000061D0000-0x0000000006262000-memory.dmpFilesize
584KB
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memory/4952-142-0x0000000006130000-0x000000000613A000-memory.dmpFilesize
40KB
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memory/4952-143-0x00000000063D0000-0x0000000006436000-memory.dmpFilesize
408KB