Analysis
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max time kernel
150s -
max time network
121s -
platform
windows10_x64 -
resource
win10v20201028 -
submitted
14-12-2020 14:58
Static task
static1
Behavioral task
behavioral1
Sample
6838591f462c336b1acdcbb27304cc4c.exe
Resource
win7v20201028
Behavioral task
behavioral2
Sample
6838591f462c336b1acdcbb27304cc4c.exe
Resource
win10v20201028
General
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Target
6838591f462c336b1acdcbb27304cc4c.exe
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Size
23KB
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MD5
6838591f462c336b1acdcbb27304cc4c
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SHA1
b4a48310ffbebb84d19f219dfcfdb18fcd254ccf
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SHA256
92a125397e9023a9dda19c1d11a770c29f07b06b3b3d19e60a14d5584ce18ad4
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SHA512
67708341db96e367717600ab549f145048e1a2ff3c113f41a814a55f7a3fba7ec3bcad340e76d7f1c3f1a673097c91aa6c4a7c19120cd223306d13f49421d1d6
Malware Config
Extracted
njrat
0.7d
HacKed
127.0.0.1:5552
279f6960ed84a752570aca7fb2dc1552
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reg_key
279f6960ed84a752570aca7fb2dc1552
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splitter
|'|'|
Signatures
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Executes dropped EXE 1 IoCs
Processes:
server.exepid process 1576 server.exe -
Modifies Windows Firewall 1 TTPs
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Adds Run key to start application 2 TTPs 2 IoCs
Processes:
server.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Windows\CurrentVersion\Run\279f6960ed84a752570aca7fb2dc1552 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exe\" .." server.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\279f6960ed84a752570aca7fb2dc1552 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exe\" .." server.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 35 IoCs
Processes:
server.exedescription pid process Token: SeDebugPrivilege 1576 server.exe Token: 33 1576 server.exe Token: SeIncBasePriorityPrivilege 1576 server.exe Token: 33 1576 server.exe Token: SeIncBasePriorityPrivilege 1576 server.exe Token: 33 1576 server.exe Token: SeIncBasePriorityPrivilege 1576 server.exe Token: 33 1576 server.exe Token: SeIncBasePriorityPrivilege 1576 server.exe Token: 33 1576 server.exe Token: SeIncBasePriorityPrivilege 1576 server.exe Token: 33 1576 server.exe Token: SeIncBasePriorityPrivilege 1576 server.exe Token: 33 1576 server.exe Token: SeIncBasePriorityPrivilege 1576 server.exe Token: 33 1576 server.exe Token: SeIncBasePriorityPrivilege 1576 server.exe Token: 33 1576 server.exe Token: SeIncBasePriorityPrivilege 1576 server.exe Token: 33 1576 server.exe Token: SeIncBasePriorityPrivilege 1576 server.exe Token: 33 1576 server.exe Token: SeIncBasePriorityPrivilege 1576 server.exe Token: 33 1576 server.exe Token: SeIncBasePriorityPrivilege 1576 server.exe Token: 33 1576 server.exe Token: SeIncBasePriorityPrivilege 1576 server.exe Token: 33 1576 server.exe Token: SeIncBasePriorityPrivilege 1576 server.exe Token: 33 1576 server.exe Token: SeIncBasePriorityPrivilege 1576 server.exe Token: 33 1576 server.exe Token: SeIncBasePriorityPrivilege 1576 server.exe Token: 33 1576 server.exe Token: SeIncBasePriorityPrivilege 1576 server.exe -
Suspicious use of WriteProcessMemory 6 IoCs
Processes:
6838591f462c336b1acdcbb27304cc4c.exeserver.exedescription pid process target process PID 3564 wrote to memory of 1576 3564 6838591f462c336b1acdcbb27304cc4c.exe server.exe PID 3564 wrote to memory of 1576 3564 6838591f462c336b1acdcbb27304cc4c.exe server.exe PID 3564 wrote to memory of 1576 3564 6838591f462c336b1acdcbb27304cc4c.exe server.exe PID 1576 wrote to memory of 3436 1576 server.exe netsh.exe PID 1576 wrote to memory of 3436 1576 server.exe netsh.exe PID 1576 wrote to memory of 3436 1576 server.exe netsh.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\6838591f462c336b1acdcbb27304cc4c.exe"C:\Users\Admin\AppData\Local\Temp\6838591f462c336b1acdcbb27304cc4c.exe"1⤵
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\server.exe"C:\Users\Admin\AppData\Local\Temp\server.exe"2⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\netsh.exenetsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe" "server.exe" ENABLE3⤵
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Temp\server.exeMD5
6838591f462c336b1acdcbb27304cc4c
SHA1b4a48310ffbebb84d19f219dfcfdb18fcd254ccf
SHA25692a125397e9023a9dda19c1d11a770c29f07b06b3b3d19e60a14d5584ce18ad4
SHA51267708341db96e367717600ab549f145048e1a2ff3c113f41a814a55f7a3fba7ec3bcad340e76d7f1c3f1a673097c91aa6c4a7c19120cd223306d13f49421d1d6
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C:\Users\Admin\AppData\Local\Temp\server.exeMD5
6838591f462c336b1acdcbb27304cc4c
SHA1b4a48310ffbebb84d19f219dfcfdb18fcd254ccf
SHA25692a125397e9023a9dda19c1d11a770c29f07b06b3b3d19e60a14d5584ce18ad4
SHA51267708341db96e367717600ab549f145048e1a2ff3c113f41a814a55f7a3fba7ec3bcad340e76d7f1c3f1a673097c91aa6c4a7c19120cd223306d13f49421d1d6
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memory/1576-2-0x0000000000000000-mapping.dmp
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memory/3436-5-0x0000000000000000-mapping.dmp