Analysis
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max time kernel
134s -
max time network
146s -
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 03:47
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20220901-en
General
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Target
file.exe
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Size
284KB
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MD5
1d641364bd0f59de6b2d04e377c43e00
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SHA1
a233c753f0e2029aeb51ad2c83caecf659a0dbe8
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SHA256
e2da3fe6413e3179962df95e4b1053624d04d344a6fc2569802c399034cd7ab5
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SHA512
048fec014c7a1b72d8b85b671ee5a1e4a0a4edf19779ff27691409bc83d8606c1439ab641eb4ad12643c7eaf64042a3e353d97e8e26a59b8bf061e2b95b52965
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SSDEEP
3072:vLOGALx3IIfSN5HbPjhN2jUhZg5k9zMllW2BiC0xcnJWeVta28mVyRwBZU/PkkXx:kLxjf4bF0jUbgmZu9iC06Jbm28mVy
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 5116 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-1-5-21-2629973501-4017243118-3254762364-1000\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 11 IoCs
Processes:
WerFault.exeWerFault.exeWerFault.exeWerFault.exeWerFault.exeWerFault.exeWerFault.exeWerFault.exeWerFault.exeWerFault.exeWerFault.exepid pid_target process target process 1960 4116 WerFault.exe file.exe 488 4116 WerFault.exe file.exe 4908 4116 WerFault.exe file.exe 4864 4116 WerFault.exe file.exe 4264 4116 WerFault.exe file.exe 3480 4116 WerFault.exe file.exe 4084 4116 WerFault.exe file.exe 4656 4116 WerFault.exe file.exe 2612 4116 WerFault.exe file.exe 2260 4116 WerFault.exe file.exe 1856 4116 WerFault.exe file.exe -
Kills process with taskkill 1 IoCs
Processes:
taskkill.exepid process 4052 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
Processes:
file.exepid process 4116 file.exe 4116 file.exe 4116 file.exe 4116 file.exe 4116 file.exe 4116 file.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
file.exepid process 4116 file.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
Cleaner.exetaskkill.exedescription pid process Token: SeDebugPrivilege 5116 Cleaner.exe Token: SeDebugPrivilege 4052 taskkill.exe -
Suspicious use of WriteProcessMemory 11 IoCs
Processes:
file.execmd.execmd.exedescription pid process target process PID 4116 wrote to memory of 1688 4116 file.exe cmd.exe PID 4116 wrote to memory of 1688 4116 file.exe cmd.exe PID 4116 wrote to memory of 1688 4116 file.exe cmd.exe PID 1688 wrote to memory of 5116 1688 cmd.exe Cleaner.exe PID 1688 wrote to memory of 5116 1688 cmd.exe Cleaner.exe PID 4116 wrote to memory of 2152 4116 file.exe cmd.exe PID 4116 wrote to memory of 2152 4116 file.exe cmd.exe PID 4116 wrote to memory of 2152 4116 file.exe cmd.exe PID 2152 wrote to memory of 4052 2152 cmd.exe taskkill.exe PID 2152 wrote to memory of 4052 2152 cmd.exe taskkill.exe PID 2152 wrote to memory of 4052 2152 cmd.exe taskkill.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 4116 -s 2642⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4116 -s 7642⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4116 -s 8042⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4116 -s 8042⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4116 -s 7802⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4116 -s 9282⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4116 -s 10042⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4116 -s 13762⤵
- 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\veT9YVSEzW2mn8FPCAuGn0JcHXpg\Cleaner.exe"2⤵
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\veT9YVSEzW2mn8FPCAuGn0JcHXpg\Cleaner.exe"C:\Users\Admin\AppData\Local\Temp\veT9YVSEzW2mn8FPCAuGn0JcHXpg\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 4116 -s 14122⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4116 -s 16562⤵
- 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⤵
- Suspicious use of WriteProcessMemory
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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 4116 -s 4922⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 4116 -ip 41161⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 360 -p 4116 -ip 41161⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 4116 -ip 41161⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4116 -ip 41161⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 4116 -ip 41161⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 360 -p 4116 -ip 41161⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 360 -p 4116 -ip 41161⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 4116 -ip 41161⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 4116 -ip 41161⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 4116 -ip 41161⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 4116 -ip 41161⤵
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\veT9YVSEzW2mn8FPCAuGn0JcHXpg\Bunifu_UI_v1.5.3.dllFilesize
236KB
MD52ecb51ab00c5f340380ecf849291dbcf
SHA11a4dffbce2a4ce65495ed79eab42a4da3b660931
SHA256f1b3e0f2750a9103e46a6a4a34f1cf9d17779725f98042cc2475ec66484801cf
SHA512e241a48eafcaf99187035f0870d24d74ae97fe84aaadd2591cceea9f64b8223d77cfb17a038a58eadd3b822c5201a6f7494f26eea6f77d95f77f6c668d088e6b
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C:\Users\Admin\AppData\Local\Temp\veT9YVSEzW2mn8FPCAuGn0JcHXpg\Cleaner.exeFilesize
3.8MB
MD523c1e8f48ec06960bbd9969c1f404192
SHA1b9384151eb3f2dbd095fa273c248722e1cc74ea3
SHA256301d9c55653f6cd8211aafdaf130092cb7ef8ea2e54db2db97153c1c8abf272c
SHA512f572e3a0ad58b3a1ed22db00b05a3909f7f53f70b84ab736e2dd6ddc54d8781fcffe4a9b33b0dd2836d438a1982b944426fe4ed01bd866bd77e20046220f2b5b
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C:\Users\Admin\AppData\Local\Temp\veT9YVSEzW2mn8FPCAuGn0JcHXpg\Cleaner.exeFilesize
3.8MB
MD523c1e8f48ec06960bbd9969c1f404192
SHA1b9384151eb3f2dbd095fa273c248722e1cc74ea3
SHA256301d9c55653f6cd8211aafdaf130092cb7ef8ea2e54db2db97153c1c8abf272c
SHA512f572e3a0ad58b3a1ed22db00b05a3909f7f53f70b84ab736e2dd6ddc54d8781fcffe4a9b33b0dd2836d438a1982b944426fe4ed01bd866bd77e20046220f2b5b
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memory/1688-135-0x0000000000000000-mapping.dmp
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memory/2152-150-0x0000000000000000-mapping.dmp
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memory/4052-151-0x0000000000000000-mapping.dmp
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memory/4116-132-0x0000000000989000-0x00000000009AF000-memory.dmpFilesize
152KB
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memory/4116-134-0x0000000000400000-0x00000000005A1000-memory.dmpFilesize
1.6MB
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memory/4116-146-0x0000000010000000-0x000000001001B000-memory.dmpFilesize
108KB
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memory/4116-152-0x0000000000400000-0x00000000005A1000-memory.dmpFilesize
1.6MB
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memory/4116-133-0x0000000000900000-0x000000000093F000-memory.dmpFilesize
252KB
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memory/4116-143-0x0000000000989000-0x00000000009AF000-memory.dmpFilesize
152KB
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memory/4116-144-0x0000000000400000-0x00000000005A1000-memory.dmpFilesize
1.6MB
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memory/5116-136-0x0000000000000000-mapping.dmp
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memory/5116-145-0x00007FFC9F550000-0x00007FFCA0011000-memory.dmpFilesize
10.8MB
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memory/5116-142-0x00007FFC9F550000-0x00007FFCA0011000-memory.dmpFilesize
10.8MB
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memory/5116-141-0x000001CA8C9F0000-0x000001CA8CA32000-memory.dmpFilesize
264KB
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memory/5116-139-0x000001CA8C490000-0x000001CA8C610000-memory.dmpFilesize
1.5MB