Analysis
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max time kernel
155s -
max time network
147s -
platform
windows7_x64 -
resource
win7-en -
submitted
06-09-2021 22:12
Static task
static1
Behavioral task
behavioral1
Sample
84bd6cb486f45bf0d92d2f259045febd.exe
Resource
win7-en
Behavioral task
behavioral2
Sample
84bd6cb486f45bf0d92d2f259045febd.exe
Resource
win10v20210408
General
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Target
84bd6cb486f45bf0d92d2f259045febd.exe
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Size
761KB
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MD5
84bd6cb486f45bf0d92d2f259045febd
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SHA1
d6a8506acd3aa0f81555da8dab87efc70e8a20f4
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SHA256
2b04dc24a677c5892b077491d6e794fe8758341919d363067aaed539f3dec2db
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SHA512
bf072d5eff0acd67ac57bf23f4454d695c0e9e56b122f9133f50bc61daca1726d3ddf3c3648b8c0005d7a0153b23164888602b76ea0e657988c554b98ae52640
Malware Config
Extracted
njrat
Njrat 0.7 Golden By Hassan Amiri
xxxxxxxxxx
pubg.ddns.net:147
Windows Update
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reg_key
Windows Update
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splitter
|Hassan|
Signatures
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suricata: ET MALWARE Generic njRAT/Bladabindi CnC Activity (ll)
suricata: ET MALWARE Generic njRAT/Bladabindi CnC Activity (ll)
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Executes dropped EXE 1 IoCs
Processes:
FixWindowsUpdate.exepid process 1052 FixWindowsUpdate.exe -
Drops startup file 2 IoCs
Processes:
FixWindowsUpdate.exedescription ioc process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Microsoft update.exe FixWindowsUpdate.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Microsoft update.exe FixWindowsUpdate.exe -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
FixWindowsUpdate.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-1669990088-476967504-438132596-1000\Software\Microsoft\Windows\CurrentVersion\Run\Windows Update = "\"C:\\Users\\Admin\\AppData\\Roaming\\FixWindowsUpdate.exe\" .." FixWindowsUpdate.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows Update = "\"C:\\Users\\Admin\\AppData\\Roaming\\FixWindowsUpdate.exe\" .." FixWindowsUpdate.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 1 IoCs
Processes:
FixWindowsUpdate.exepid process 1052 FixWindowsUpdate.exe -
Suspicious use of AdjustPrivilegeToken 31 IoCs
Processes:
FixWindowsUpdate.exedescription pid process Token: SeDebugPrivilege 1052 FixWindowsUpdate.exe Token: 33 1052 FixWindowsUpdate.exe Token: SeIncBasePriorityPrivilege 1052 FixWindowsUpdate.exe Token: 33 1052 FixWindowsUpdate.exe Token: SeIncBasePriorityPrivilege 1052 FixWindowsUpdate.exe Token: 33 1052 FixWindowsUpdate.exe Token: SeIncBasePriorityPrivilege 1052 FixWindowsUpdate.exe Token: 33 1052 FixWindowsUpdate.exe Token: SeIncBasePriorityPrivilege 1052 FixWindowsUpdate.exe Token: 33 1052 FixWindowsUpdate.exe Token: SeIncBasePriorityPrivilege 1052 FixWindowsUpdate.exe Token: 33 1052 FixWindowsUpdate.exe Token: SeIncBasePriorityPrivilege 1052 FixWindowsUpdate.exe Token: 33 1052 FixWindowsUpdate.exe Token: SeIncBasePriorityPrivilege 1052 FixWindowsUpdate.exe Token: 33 1052 FixWindowsUpdate.exe Token: SeIncBasePriorityPrivilege 1052 FixWindowsUpdate.exe Token: 33 1052 FixWindowsUpdate.exe Token: SeIncBasePriorityPrivilege 1052 FixWindowsUpdate.exe Token: 33 1052 FixWindowsUpdate.exe Token: SeIncBasePriorityPrivilege 1052 FixWindowsUpdate.exe Token: 33 1052 FixWindowsUpdate.exe Token: SeIncBasePriorityPrivilege 1052 FixWindowsUpdate.exe Token: 33 1052 FixWindowsUpdate.exe Token: SeIncBasePriorityPrivilege 1052 FixWindowsUpdate.exe Token: 33 1052 FixWindowsUpdate.exe Token: SeIncBasePriorityPrivilege 1052 FixWindowsUpdate.exe Token: 33 1052 FixWindowsUpdate.exe Token: SeIncBasePriorityPrivilege 1052 FixWindowsUpdate.exe Token: 33 1052 FixWindowsUpdate.exe Token: SeIncBasePriorityPrivilege 1052 FixWindowsUpdate.exe -
Suspicious use of WriteProcessMemory 3 IoCs
Processes:
84bd6cb486f45bf0d92d2f259045febd.exedescription pid process target process PID 1664 wrote to memory of 1052 1664 84bd6cb486f45bf0d92d2f259045febd.exe FixWindowsUpdate.exe PID 1664 wrote to memory of 1052 1664 84bd6cb486f45bf0d92d2f259045febd.exe FixWindowsUpdate.exe PID 1664 wrote to memory of 1052 1664 84bd6cb486f45bf0d92d2f259045febd.exe FixWindowsUpdate.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\84bd6cb486f45bf0d92d2f259045febd.exe"C:\Users\Admin\AppData\Local\Temp\84bd6cb486f45bf0d92d2f259045febd.exe"1⤵
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Roaming\FixWindowsUpdate.exe"C:\Users\Admin\AppData\Roaming\FixWindowsUpdate.exe"2⤵
- Executes dropped EXE
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Roaming\FixWindowsUpdate.exeMD5
84bd6cb486f45bf0d92d2f259045febd
SHA1d6a8506acd3aa0f81555da8dab87efc70e8a20f4
SHA2562b04dc24a677c5892b077491d6e794fe8758341919d363067aaed539f3dec2db
SHA512bf072d5eff0acd67ac57bf23f4454d695c0e9e56b122f9133f50bc61daca1726d3ddf3c3648b8c0005d7a0153b23164888602b76ea0e657988c554b98ae52640
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C:\Users\Admin\AppData\Roaming\FixWindowsUpdate.exeMD5
84bd6cb486f45bf0d92d2f259045febd
SHA1d6a8506acd3aa0f81555da8dab87efc70e8a20f4
SHA2562b04dc24a677c5892b077491d6e794fe8758341919d363067aaed539f3dec2db
SHA512bf072d5eff0acd67ac57bf23f4454d695c0e9e56b122f9133f50bc61daca1726d3ddf3c3648b8c0005d7a0153b23164888602b76ea0e657988c554b98ae52640
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memory/1052-57-0x0000000000000000-mapping.dmp
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memory/1052-60-0x0000000000160000-0x0000000000161000-memory.dmpFilesize
4KB
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memory/1052-63-0x000000001B2B0000-0x000000001B2B2000-memory.dmpFilesize
8KB
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memory/1664-53-0x0000000000190000-0x0000000000191000-memory.dmpFilesize
4KB
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memory/1664-55-0x0000000000310000-0x000000000031B000-memory.dmpFilesize
44KB
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memory/1664-56-0x000000001B0A0000-0x000000001B0A2000-memory.dmpFilesize
8KB