Analysis
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max time kernel
150s -
max time network
154s -
platform
windows10-2004_x64 -
resource
win10v2004-20220721-en -
resource tags
arch:x64arch:x86image:win10v2004-20220721-enlocale:en-usos:windows10-2004-x64system -
submitted
31-07-2022 21:19
Behavioral task
behavioral1
Sample
5e220b16575e55b589df04d15e2806160345f4d588bc659be5f3090919dd4be5.exe
Resource
win7-20220715-en
Behavioral task
behavioral2
Sample
5e220b16575e55b589df04d15e2806160345f4d588bc659be5f3090919dd4be5.exe
Resource
win10v2004-20220721-en
General
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Target
5e220b16575e55b589df04d15e2806160345f4d588bc659be5f3090919dd4be5.exe
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Size
28KB
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MD5
09d9d38a61ca864ddca8c576b9a3526f
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SHA1
03df810dc2f1b2bfd240a6532cd36e0965fa8dc8
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SHA256
5e220b16575e55b589df04d15e2806160345f4d588bc659be5f3090919dd4be5
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SHA512
ab950d0ab1567f7dac126d275797c7be2ba3b017b5c2a2cf4361dc675bd62631f6e65c5e3a37ab1d01d24fbbf085777d46be2bfe447f5cf53ad7c9a7d87b7c5b
Malware Config
Extracted
njrat
0.7d
HacKed
127.0.0.1:1177
212683d986fb740ad6a40184df48e604
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reg_key
212683d986fb740ad6a40184df48e604
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splitter
|'|'|
Signatures
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Executes dropped EXE 1 IoCs
Processes:
server.exepid process 212 server.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:
5e220b16575e55b589df04d15e2806160345f4d588bc659be5f3090919dd4be5.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-2660308776-3705150086-26593515-1000\Control Panel\International\Geo\Nation 5e220b16575e55b589df04d15e2806160345f4d588bc659be5f3090919dd4be5.exe -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
server.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2660308776-3705150086-26593515-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\212683d986fb740ad6a40184df48e604 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exe\" .." server.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\212683d986fb740ad6a40184df48e604 = "\"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 33 IoCs
Processes:
server.exedescription pid process Token: SeDebugPrivilege 212 server.exe Token: 33 212 server.exe Token: SeIncBasePriorityPrivilege 212 server.exe Token: 33 212 server.exe Token: SeIncBasePriorityPrivilege 212 server.exe Token: 33 212 server.exe Token: SeIncBasePriorityPrivilege 212 server.exe Token: 33 212 server.exe Token: SeIncBasePriorityPrivilege 212 server.exe Token: 33 212 server.exe Token: SeIncBasePriorityPrivilege 212 server.exe Token: 33 212 server.exe Token: SeIncBasePriorityPrivilege 212 server.exe Token: 33 212 server.exe Token: SeIncBasePriorityPrivilege 212 server.exe Token: 33 212 server.exe Token: SeIncBasePriorityPrivilege 212 server.exe Token: 33 212 server.exe Token: SeIncBasePriorityPrivilege 212 server.exe Token: 33 212 server.exe Token: SeIncBasePriorityPrivilege 212 server.exe Token: 33 212 server.exe Token: SeIncBasePriorityPrivilege 212 server.exe Token: 33 212 server.exe Token: SeIncBasePriorityPrivilege 212 server.exe Token: 33 212 server.exe Token: SeIncBasePriorityPrivilege 212 server.exe Token: 33 212 server.exe Token: SeIncBasePriorityPrivilege 212 server.exe Token: 33 212 server.exe Token: SeIncBasePriorityPrivilege 212 server.exe Token: 33 212 server.exe Token: SeIncBasePriorityPrivilege 212 server.exe -
Suspicious use of WriteProcessMemory 6 IoCs
Processes:
5e220b16575e55b589df04d15e2806160345f4d588bc659be5f3090919dd4be5.exeserver.exedescription pid process target process PID 2648 wrote to memory of 212 2648 5e220b16575e55b589df04d15e2806160345f4d588bc659be5f3090919dd4be5.exe server.exe PID 2648 wrote to memory of 212 2648 5e220b16575e55b589df04d15e2806160345f4d588bc659be5f3090919dd4be5.exe server.exe PID 2648 wrote to memory of 212 2648 5e220b16575e55b589df04d15e2806160345f4d588bc659be5f3090919dd4be5.exe server.exe PID 212 wrote to memory of 444 212 server.exe netsh.exe PID 212 wrote to memory of 444 212 server.exe netsh.exe PID 212 wrote to memory of 444 212 server.exe netsh.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\5e220b16575e55b589df04d15e2806160345f4d588bc659be5f3090919dd4be5.exe"C:\Users\Admin\AppData\Local\Temp\5e220b16575e55b589df04d15e2806160345f4d588bc659be5f3090919dd4be5.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2648 -
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
PID:212 -
C:\Windows\SysWOW64\netsh.exenetsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe" "server.exe" ENABLE3⤵
- Modifies Windows Firewall
PID:444
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Temp\server.exeFilesize
28KB
MD509d9d38a61ca864ddca8c576b9a3526f
SHA103df810dc2f1b2bfd240a6532cd36e0965fa8dc8
SHA2565e220b16575e55b589df04d15e2806160345f4d588bc659be5f3090919dd4be5
SHA512ab950d0ab1567f7dac126d275797c7be2ba3b017b5c2a2cf4361dc675bd62631f6e65c5e3a37ab1d01d24fbbf085777d46be2bfe447f5cf53ad7c9a7d87b7c5b
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C:\Users\Admin\AppData\Local\Temp\server.exeFilesize
28KB
MD509d9d38a61ca864ddca8c576b9a3526f
SHA103df810dc2f1b2bfd240a6532cd36e0965fa8dc8
SHA2565e220b16575e55b589df04d15e2806160345f4d588bc659be5f3090919dd4be5
SHA512ab950d0ab1567f7dac126d275797c7be2ba3b017b5c2a2cf4361dc675bd62631f6e65c5e3a37ab1d01d24fbbf085777d46be2bfe447f5cf53ad7c9a7d87b7c5b
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memory/212-131-0x0000000000000000-mapping.dmp
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memory/212-135-0x00000000751D0000-0x0000000075781000-memory.dmpFilesize
5.7MB
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memory/212-137-0x00000000751D0000-0x0000000075781000-memory.dmpFilesize
5.7MB
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memory/444-136-0x0000000000000000-mapping.dmp
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memory/2648-130-0x00000000751D0000-0x0000000075781000-memory.dmpFilesize
5.7MB
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memory/2648-134-0x00000000751D0000-0x0000000075781000-memory.dmpFilesize
5.7MB