Analysis
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max time kernel
110s -
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
25-09-2022 02:22
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20220812-en
General
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Target
file.exe
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Size
284KB
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MD5
e0663b43a4ddd17bdca98000cca9cbf7
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SHA1
36bb48bc564dd672fd3e1a390024e463ff81c48c
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SHA256
e8638c41223f671b889dfd47b715053395d0ed4c5cae4690a1efd8ad73285545
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SHA512
13dc899e129a16242b9c1c75869cafda10502ddecfd241cbc7d4015e6de91d5a998a51f99984b6a6ac833c9f60dab8e2e6b457abe57f292e672a3b748b96e446
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SSDEEP
3072:wt2AIALOjEjz5N5Dpzd/Ox95/jV/7RdMgq92lvKYDYGOULHqsOUAjs9+J1sYPNq1:kLzjRxEXdV/rbyGXYGOUVOUAjskqYP
Malware Config
Extracted
nymaim
208.67.104.97
85.31.46.167
Signatures
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Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
Cleaner.exepid process 3952 Cleaner.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
file.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation file.exe -
Legitimate hosting services abused for malware hosting/C2 1 TTPs
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Program crash 12 IoCs
Processes:
WerFault.exeWerFault.exeWerFault.exeWerFault.exeWerFault.exeWerFault.exeWerFault.exeWerFault.exeWerFault.exeWerFault.exeWerFault.exeWerFault.exepid pid_target process target process 4884 4720 WerFault.exe file.exe 4564 4720 WerFault.exe file.exe 2028 4720 WerFault.exe file.exe 1592 4720 WerFault.exe file.exe 4224 4720 WerFault.exe file.exe 212 4720 WerFault.exe file.exe 4608 4720 WerFault.exe file.exe 2572 4720 WerFault.exe file.exe 3172 4720 WerFault.exe file.exe 1480 4720 WerFault.exe file.exe 1996 4720 WerFault.exe file.exe 5000 4720 WerFault.exe file.exe -
Kills process with taskkill 1 IoCs
Processes:
taskkill.exepid process 4860 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
Processes:
file.exepid process 4720 file.exe 4720 file.exe 4720 file.exe 4720 file.exe 4720 file.exe 4720 file.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
file.exepid process 4720 file.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
Cleaner.exetaskkill.exedescription pid process Token: SeDebugPrivilege 3952 Cleaner.exe Token: SeDebugPrivilege 4860 taskkill.exe -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
file.execmd.exedescription pid process target process PID 4720 wrote to memory of 4172 4720 file.exe cmd.exe PID 4720 wrote to memory of 4172 4720 file.exe cmd.exe PID 4720 wrote to memory of 4172 4720 file.exe cmd.exe PID 4172 wrote to memory of 3952 4172 cmd.exe Cleaner.exe PID 4172 wrote to memory of 3952 4172 cmd.exe Cleaner.exe PID 4720 wrote to memory of 4760 4720 file.exe cmd.exe PID 4720 wrote to memory of 4760 4720 file.exe cmd.exe PID 4720 wrote to memory of 4760 4720 file.exe cmd.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\file.exe"C:\Users\Admin\AppData\Local\Temp\file.exe"1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4720 -s 4522⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4720 -s 7722⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4720 -s 8122⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4720 -s 7722⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4720 -s 8602⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4720 -s 9162⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4720 -s 9722⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4720 -s 9722⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4720 -s 13722⤵
- Program crash
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c start /I "" "C:\Users\Admin\AppData\Local\Temp\z2CevYDz3hutk920ogd\Cleaner.exe"2⤵
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\z2CevYDz3hutk920ogd\Cleaner.exe"C:\Users\Admin\AppData\Local\Temp\z2CevYDz3hutk920ogd\Cleaner.exe"3⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4720 -s 13842⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4720 -s 16642⤵
- Program crash
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c taskkill /im "file.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\file.exe" & exit2⤵
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C:\Windows\SysWOW64\taskkill.exetaskkill /im "file.exe" /f3⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4720 -s 16922⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 4720 -ip 47201⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 4720 -ip 47201⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 4720 -ip 47201⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 4720 -ip 47201⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 4720 -ip 47201⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 4720 -ip 47201⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 4720 -ip 47201⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 4720 -ip 47201⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 4720 -ip 47201⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 4720 -ip 47201⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 496 -p 4720 -ip 47201⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 4720 -ip 47201⤵
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\z2CevYDz3hutk920ogd\Bunifu_UI_v1.5.3.dllFilesize
236KB
MD52ecb51ab00c5f340380ecf849291dbcf
SHA11a4dffbce2a4ce65495ed79eab42a4da3b660931
SHA256f1b3e0f2750a9103e46a6a4a34f1cf9d17779725f98042cc2475ec66484801cf
SHA512e241a48eafcaf99187035f0870d24d74ae97fe84aaadd2591cceea9f64b8223d77cfb17a038a58eadd3b822c5201a6f7494f26eea6f77d95f77f6c668d088e6b
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C:\Users\Admin\AppData\Local\Temp\z2CevYDz3hutk920ogd\Cleaner.exeFilesize
3.8MB
MD523c1e8f48ec06960bbd9969c1f404192
SHA1b9384151eb3f2dbd095fa273c248722e1cc74ea3
SHA256301d9c55653f6cd8211aafdaf130092cb7ef8ea2e54db2db97153c1c8abf272c
SHA512f572e3a0ad58b3a1ed22db00b05a3909f7f53f70b84ab736e2dd6ddc54d8781fcffe4a9b33b0dd2836d438a1982b944426fe4ed01bd866bd77e20046220f2b5b
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C:\Users\Admin\AppData\Local\Temp\z2CevYDz3hutk920ogd\Cleaner.exeFilesize
3.8MB
MD523c1e8f48ec06960bbd9969c1f404192
SHA1b9384151eb3f2dbd095fa273c248722e1cc74ea3
SHA256301d9c55653f6cd8211aafdaf130092cb7ef8ea2e54db2db97153c1c8abf272c
SHA512f572e3a0ad58b3a1ed22db00b05a3909f7f53f70b84ab736e2dd6ddc54d8781fcffe4a9b33b0dd2836d438a1982b944426fe4ed01bd866bd77e20046220f2b5b
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memory/3952-145-0x000001B537F50000-0x000001B537F92000-memory.dmpFilesize
264KB
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memory/3952-142-0x000001B51D9F0000-0x000001B51DB70000-memory.dmpFilesize
1.5MB
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memory/3952-146-0x00007FFBC86A0000-0x00007FFBC9161000-memory.dmpFilesize
10.8MB
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memory/3952-143-0x00007FFBC86A0000-0x00007FFBC9161000-memory.dmpFilesize
10.8MB
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memory/3952-139-0x0000000000000000-mapping.dmp
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memory/4172-138-0x0000000000000000-mapping.dmp
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memory/4720-135-0x0000000000709000-0x000000000072F000-memory.dmpFilesize
152KB
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memory/4720-134-0x0000000000400000-0x00000000005A1000-memory.dmpFilesize
1.6MB
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memory/4720-136-0x0000000000670000-0x00000000006AF000-memory.dmpFilesize
252KB
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memory/4720-132-0x0000000000709000-0x000000000072F000-memory.dmpFilesize
152KB
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memory/4720-133-0x0000000000670000-0x00000000006AF000-memory.dmpFilesize
252KB
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memory/4720-137-0x0000000000400000-0x00000000005A1000-memory.dmpFilesize
1.6MB
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memory/4720-147-0x0000000010000000-0x000000001001B000-memory.dmpFilesize
108KB
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memory/4720-152-0x0000000000400000-0x00000000005A1000-memory.dmpFilesize
1.6MB
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memory/4760-151-0x0000000000000000-mapping.dmp