Analysis
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max time kernel
101s -
max time network
126s -
platform
windows7_x64 -
resource
win7-20220414-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 behavioral1/memory/940-56-0x00000000001B0000-0x00000000001F6000-memory.dmp family_onlylogger behavioral1/memory/940-57-0x0000000000400000-0x00000000007FF000-memory.dmp family_onlylogger -
Deletes itself 1 IoCs
Processes:
cmd.exepid Process 1836 cmd.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Kills process with taskkill 1 IoCs
Processes:
taskkill.exepid Process 1796 taskkill.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
taskkill.exedescription pid Process Token: SeDebugPrivilege 1796 taskkill.exe -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
bc71bc7f6ce5a6d4502c997d27bf5382221dc736a59cb00c65f68cd0981ad424.execmd.exedescription pid Process procid_target PID 940 wrote to memory of 1836 940 bc71bc7f6ce5a6d4502c997d27bf5382221dc736a59cb00c65f68cd0981ad424.exe 28 PID 940 wrote to memory of 1836 940 bc71bc7f6ce5a6d4502c997d27bf5382221dc736a59cb00c65f68cd0981ad424.exe 28 PID 940 wrote to memory of 1836 940 bc71bc7f6ce5a6d4502c997d27bf5382221dc736a59cb00c65f68cd0981ad424.exe 28 PID 940 wrote to memory of 1836 940 bc71bc7f6ce5a6d4502c997d27bf5382221dc736a59cb00c65f68cd0981ad424.exe 28 PID 1836 wrote to memory of 1796 1836 cmd.exe 30 PID 1836 wrote to memory of 1796 1836 cmd.exe 30 PID 1836 wrote to memory of 1796 1836 cmd.exe 30 PID 1836 wrote to memory of 1796 1836 cmd.exe 30
Processes
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C:\Users\Admin\AppData\Local\Temp\bc71bc7f6ce5a6d4502c997d27bf5382221dc736a59cb00c65f68cd0981ad424.exe"C:\Users\Admin\AppData\Local\Temp\bc71bc7f6ce5a6d4502c997d27bf5382221dc736a59cb00c65f68cd0981ad424.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:940 -
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⤵
- Deletes itself
- Suspicious use of WriteProcessMemory
PID:1836 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im "bc71bc7f6ce5a6d4502c997d27bf5382221dc736a59cb00c65f68cd0981ad424.exe" /f3⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:1796
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