Analysis
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max time kernel
150s -
max time network
149s -
platform
windows7_x64 -
resource
win7-20220414-en -
submitted
04-07-2022 12:30
Behavioral task
behavioral1
Sample
0x0007000000005c51-56.exe
Resource
win7-20220414-en
Behavioral task
behavioral2
Sample
0x0007000000005c51-56.exe
Resource
win10v2004-20220414-en
General
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Target
0x0007000000005c51-56.exe
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Size
26KB
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MD5
24bf1ae1d62be5e1283fc4ddc9110dd9
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SHA1
7b60b080982e77eb4565dce877236297280fcf36
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SHA256
55cc06f563e305e118f8d9d6307e88de5f802cd36f6bdf394e17b95bf852bd69
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SHA512
b0b1228c90ac6f795c3ee641c94045023cfc8fea0dba82c37c382cc91376c3b03ca0900c82881d9c8d99363a4fdeca4e8bc758c47730444195d0c52703bef391
Malware Config
Extracted
njrat
v2.0
System
2.tcp.ngrok.io:13817
Windows
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reg_key
Windows
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splitter
|-F-|
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:
System.exepid process 1916 System.exe -
Drops startup file 2 IoCs
Processes:
System.exe0x0007000000005c51-56.exedescription ioc process File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Windows.lnk System.exe File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Windows.lnk 0x0007000000005c51-56.exe -
Loads dropped DLL 2 IoCs
Processes:
0x0007000000005c51-56.exepid process 1504 0x0007000000005c51-56.exe 1504 0x0007000000005c51-56.exe -
Adds Run key to start application 2 TTPs 5 IoCs
Processes:
System.exe0x0007000000005c51-56.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Windows2 = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\Windows.URL" System.exe Set value (str) \REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows\CurrentVersion\Run\Windows = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\Windows.URL" System.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Windows = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\Windows.URL" System.exe Set value (str) \REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows\CurrentVersion\Run\Windows2 = "C:\\ProgramData\\System.exe" 0x0007000000005c51-56.exe Set value (str) \REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows\CurrentVersion\Run\Windows2 = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\Windows.URL" 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 use of AdjustPrivilegeToken 19 IoCs
Processes:
System.exedescription pid process Token: SeDebugPrivilege 1916 System.exe Token: 33 1916 System.exe Token: SeIncBasePriorityPrivilege 1916 System.exe Token: 33 1916 System.exe Token: SeIncBasePriorityPrivilege 1916 System.exe Token: 33 1916 System.exe Token: SeIncBasePriorityPrivilege 1916 System.exe Token: 33 1916 System.exe Token: SeIncBasePriorityPrivilege 1916 System.exe Token: 33 1916 System.exe Token: SeIncBasePriorityPrivilege 1916 System.exe Token: 33 1916 System.exe Token: SeIncBasePriorityPrivilege 1916 System.exe Token: 33 1916 System.exe Token: SeIncBasePriorityPrivilege 1916 System.exe Token: 33 1916 System.exe Token: SeIncBasePriorityPrivilege 1916 System.exe Token: 33 1916 System.exe Token: SeIncBasePriorityPrivilege 1916 System.exe -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
0x0007000000005c51-56.exedescription pid process target process PID 1504 wrote to memory of 1916 1504 0x0007000000005c51-56.exe System.exe PID 1504 wrote to memory of 1916 1504 0x0007000000005c51-56.exe System.exe PID 1504 wrote to memory of 1916 1504 0x0007000000005c51-56.exe System.exe PID 1504 wrote to memory of 1916 1504 0x0007000000005c51-56.exe System.exe PID 1504 wrote to memory of 2028 1504 0x0007000000005c51-56.exe attrib.exe PID 1504 wrote to memory of 2028 1504 0x0007000000005c51-56.exe attrib.exe PID 1504 wrote to memory of 2028 1504 0x0007000000005c51-56.exe attrib.exe PID 1504 wrote to memory of 2028 1504 0x0007000000005c51-56.exe attrib.exe -
Views/modifies file attributes 1 TTPs 1 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\0x0007000000005c51-56.exe"C:\Users\Admin\AppData\Local\Temp\0x0007000000005c51-56.exe"1⤵
- Drops startup file
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
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C:\ProgramData\System.exe"C:\ProgramData\System.exe"2⤵
- Executes dropped EXE
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\attrib.exeattrib +h +r +s "C:\ProgramData\System.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:\ProgramData\System.exeFilesize
26KB
MD524bf1ae1d62be5e1283fc4ddc9110dd9
SHA17b60b080982e77eb4565dce877236297280fcf36
SHA25655cc06f563e305e118f8d9d6307e88de5f802cd36f6bdf394e17b95bf852bd69
SHA512b0b1228c90ac6f795c3ee641c94045023cfc8fea0dba82c37c382cc91376c3b03ca0900c82881d9c8d99363a4fdeca4e8bc758c47730444195d0c52703bef391
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C:\ProgramData\System.exeFilesize
26KB
MD524bf1ae1d62be5e1283fc4ddc9110dd9
SHA17b60b080982e77eb4565dce877236297280fcf36
SHA25655cc06f563e305e118f8d9d6307e88de5f802cd36f6bdf394e17b95bf852bd69
SHA512b0b1228c90ac6f795c3ee641c94045023cfc8fea0dba82c37c382cc91376c3b03ca0900c82881d9c8d99363a4fdeca4e8bc758c47730444195d0c52703bef391
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C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Windows.lnkFilesize
1KB
MD531fdbc4ae5126c245832643c30b3a980
SHA17daefa2282c7632062808ceb2c1d293dd94e4012
SHA2566edd4eadbc39c9ba7e85bcf8087030eea88bd670a6b5c551e808a079299a441b
SHA51287487a3968628fb20baf4356b0aea31538c2706375602fd342661cd806d8478d666b205d89ca10386491f5fbc54e488d290350c4395a2984df605415636e92c0
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C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\Windows.lnkFilesize
1022B
MD5a8fdf8addd6c6a820cd13e784d598162
SHA1ecd3c37942c1e04630fbb11b048cdb0828f4eff7
SHA25666be6c6dd2bc497548af24a62b87bfe1f821ab2d129927fe4df72123ad1d49b9
SHA512a123caa4c3ac7687b2cd1e0be2b5db9a66eb572a065e3263222e6d4df679a72b1a026fbd06921437b91944f9286990ed6820586399f6b3bf0ceedec34da2d92b
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\ProgramData\System.exeFilesize
26KB
MD524bf1ae1d62be5e1283fc4ddc9110dd9
SHA17b60b080982e77eb4565dce877236297280fcf36
SHA25655cc06f563e305e118f8d9d6307e88de5f802cd36f6bdf394e17b95bf852bd69
SHA512b0b1228c90ac6f795c3ee641c94045023cfc8fea0dba82c37c382cc91376c3b03ca0900c82881d9c8d99363a4fdeca4e8bc758c47730444195d0c52703bef391
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\ProgramData\System.exeFilesize
26KB
MD524bf1ae1d62be5e1283fc4ddc9110dd9
SHA17b60b080982e77eb4565dce877236297280fcf36
SHA25655cc06f563e305e118f8d9d6307e88de5f802cd36f6bdf394e17b95bf852bd69
SHA512b0b1228c90ac6f795c3ee641c94045023cfc8fea0dba82c37c382cc91376c3b03ca0900c82881d9c8d99363a4fdeca4e8bc758c47730444195d0c52703bef391
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memory/1504-55-0x0000000074BD0000-0x000000007517B000-memory.dmpFilesize
5.7MB
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memory/1504-54-0x0000000076561000-0x0000000076563000-memory.dmpFilesize
8KB
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memory/1504-65-0x0000000074BD0000-0x000000007517B000-memory.dmpFilesize
5.7MB
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memory/1916-58-0x0000000000000000-mapping.dmp
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memory/1916-66-0x0000000074BD0000-0x000000007517B000-memory.dmpFilesize
5.7MB
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memory/1916-67-0x0000000074BD0000-0x000000007517B000-memory.dmpFilesize
5.7MB
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memory/2028-62-0x0000000000000000-mapping.dmp