Analysis
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max time kernel
152s -
max time network
182s -
platform
windows10-2004_x64 -
resource
win10v2004-20220414-en -
submitted
08-05-2022 06:21
Static task
static1
Behavioral task
behavioral1
Sample
bc71bc7f6ce5a6d4502c997d27bf5382221dc736a59cb00c65f68cd0981ad424.exe
Resource
win7-20220414-en
Behavioral task
behavioral2
Sample
bc71bc7f6ce5a6d4502c997d27bf5382221dc736a59cb00c65f68cd0981ad424.exe
Resource
win10v2004-20220414-en
General
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Target
bc71bc7f6ce5a6d4502c997d27bf5382221dc736a59cb00c65f68cd0981ad424.exe
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Size
263KB
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MD5
8144dd88fc6b522c1e68937c820a8ad0
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SHA1
3551922adcacbfc72c7fe7db3f17396a6e84c6da
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SHA256
bc71bc7f6ce5a6d4502c997d27bf5382221dc736a59cb00c65f68cd0981ad424
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SHA512
bd4f910d630f9a0160262bfb929d23807737e1a1bbc2974a88edb8de6a14f05787a2cdbd40197abe223be84eede55cc348aaf9a76434e9ccd4499dfb2db00835
Malware Config
Signatures
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OnlyLogger
A tiny loader that uses IPLogger to get its payload.
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OnlyLogger Payload 2 IoCs
Processes:
resource yara_rule behavioral2/memory/1492-131-0x0000000000AA0000-0x0000000000AE6000-memory.dmp family_onlylogger behavioral2/memory/1492-132-0x0000000000400000-0x00000000007FF000-memory.dmp family_onlylogger -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
bc71bc7f6ce5a6d4502c997d27bf5382221dc736a59cb00c65f68cd0981ad424.exedescription ioc Process Key value queried \REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Control Panel\International\Geo\Nation bc71bc7f6ce5a6d4502c997d27bf5382221dc736a59cb00c65f68cd0981ad424.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Program crash 8 IoCs
Processes:
WerFault.exeWerFault.exeWerFault.exeWerFault.exeWerFault.exeWerFault.exeWerFault.exeWerFault.exepid pid_target Process procid_target 2188 1492 WerFault.exe 81 932 1492 WerFault.exe 81 244 1492 WerFault.exe 81 400 1492 WerFault.exe 81 5016 1492 WerFault.exe 81 2260 1492 WerFault.exe 81 3200 1492 WerFault.exe 81 2664 1492 WerFault.exe 81 -
Kills process with taskkill 1 IoCs
Processes:
taskkill.exepid Process 1080 taskkill.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
taskkill.exedescription pid Process Token: SeDebugPrivilege 1080 taskkill.exe -
Suspicious use of WriteProcessMemory 6 IoCs
Processes:
bc71bc7f6ce5a6d4502c997d27bf5382221dc736a59cb00c65f68cd0981ad424.execmd.exedescription pid Process procid_target PID 1492 wrote to memory of 4344 1492 bc71bc7f6ce5a6d4502c997d27bf5382221dc736a59cb00c65f68cd0981ad424.exe 105 PID 1492 wrote to memory of 4344 1492 bc71bc7f6ce5a6d4502c997d27bf5382221dc736a59cb00c65f68cd0981ad424.exe 105 PID 1492 wrote to memory of 4344 1492 bc71bc7f6ce5a6d4502c997d27bf5382221dc736a59cb00c65f68cd0981ad424.exe 105 PID 4344 wrote to memory of 1080 4344 cmd.exe 109 PID 4344 wrote to memory of 1080 4344 cmd.exe 109 PID 4344 wrote to memory of 1080 4344 cmd.exe 109
Processes
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C:\Users\Admin\AppData\Local\Temp\bc71bc7f6ce5a6d4502c997d27bf5382221dc736a59cb00c65f68cd0981ad424.exe"C:\Users\Admin\AppData\Local\Temp\bc71bc7f6ce5a6d4502c997d27bf5382221dc736a59cb00c65f68cd0981ad424.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1492 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1492 -s 6122⤵
- Program crash
PID:2188
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1492 -s 6522⤵
- Program crash
PID:932
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1492 -s 6482⤵
- Program crash
PID:244
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1492 -s 6362⤵
- Program crash
PID:400
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1492 -s 7442⤵
- Program crash
PID:5016
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1492 -s 11842⤵
- Program crash
PID:2260
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1492 -s 12362⤵
- Program crash
PID:3200
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c taskkill /im "bc71bc7f6ce5a6d4502c997d27bf5382221dc736a59cb00c65f68cd0981ad424.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\bc71bc7f6ce5a6d4502c997d27bf5382221dc736a59cb00c65f68cd0981ad424.exe" & exit2⤵
- Suspicious use of WriteProcessMemory
PID:4344 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im "bc71bc7f6ce5a6d4502c997d27bf5382221dc736a59cb00c65f68cd0981ad424.exe" /f3⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:1080
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1492 -s 12602⤵
- Program crash
PID:2664
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 1492 -ip 14921⤵PID:936
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 1492 -ip 14921⤵PID:4860
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 1492 -ip 14921⤵PID:4580
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 1492 -ip 14921⤵PID:204
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 1492 -ip 14921⤵PID:648
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 1492 -ip 14921⤵PID:2292
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 1492 -ip 14921⤵PID:3568
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 1492 -ip 14921⤵PID:5024