Analysis
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max time kernel
193s -
max time network
226s -
platform
windows10-2004_x64 -
resource
win10v2004-20220414-en -
submitted
08-05-2022 06:21
Static task
static1
Behavioral task
behavioral1
Sample
b854e4ad929ed52298efd7360164462b1c88514fd91e64ab686840ffea13fa03.exe
Resource
win7-20220414-en
Behavioral task
behavioral2
Sample
b854e4ad929ed52298efd7360164462b1c88514fd91e64ab686840ffea13fa03.exe
Resource
win10v2004-20220414-en
General
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Target
b854e4ad929ed52298efd7360164462b1c88514fd91e64ab686840ffea13fa03.exe
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Size
234KB
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MD5
646851362409b6712678ce00b0882750
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SHA1
a1725297e2ce8348d05a29f108fc10c2728ce074
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SHA256
b854e4ad929ed52298efd7360164462b1c88514fd91e64ab686840ffea13fa03
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SHA512
6d0c63e90e58853caa03cd01ee1e1e9e75418e03b29062768faa2217d19824279cb26e45fffe53353e3d4faa1dc338531a83326f0390dd038d661d832f1b99c9
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/4288-131-0x0000000001070000-0x00000000010B6000-memory.dmp family_onlylogger behavioral2/memory/4288-132-0x0000000000400000-0x0000000000F98000-memory.dmp family_onlylogger -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
b854e4ad929ed52298efd7360164462b1c88514fd91e64ab686840ffea13fa03.exedescription ioc Process Key value queried \REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Control Panel\International\Geo\Nation b854e4ad929ed52298efd7360164462b1c88514fd91e64ab686840ffea13fa03.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 1 IoCs
Processes:
WerFault.exepid pid_target Process procid_target 5064 4288 WerFault.exe 79 -
Kills process with taskkill 1 IoCs
Processes:
taskkill.exepid Process 5076 taskkill.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
taskkill.exedescription pid Process Token: SeDebugPrivilege 5076 taskkill.exe -
Suspicious use of WriteProcessMemory 6 IoCs
Processes:
b854e4ad929ed52298efd7360164462b1c88514fd91e64ab686840ffea13fa03.execmd.exedescription pid Process procid_target PID 4288 wrote to memory of 4444 4288 b854e4ad929ed52298efd7360164462b1c88514fd91e64ab686840ffea13fa03.exe 80 PID 4288 wrote to memory of 4444 4288 b854e4ad929ed52298efd7360164462b1c88514fd91e64ab686840ffea13fa03.exe 80 PID 4288 wrote to memory of 4444 4288 b854e4ad929ed52298efd7360164462b1c88514fd91e64ab686840ffea13fa03.exe 80 PID 4444 wrote to memory of 5076 4444 cmd.exe 83 PID 4444 wrote to memory of 5076 4444 cmd.exe 83 PID 4444 wrote to memory of 5076 4444 cmd.exe 83
Processes
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C:\Users\Admin\AppData\Local\Temp\b854e4ad929ed52298efd7360164462b1c88514fd91e64ab686840ffea13fa03.exe"C:\Users\Admin\AppData\Local\Temp\b854e4ad929ed52298efd7360164462b1c88514fd91e64ab686840ffea13fa03.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4288 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c taskkill /im "b854e4ad929ed52298efd7360164462b1c88514fd91e64ab686840ffea13fa03.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\b854e4ad929ed52298efd7360164462b1c88514fd91e64ab686840ffea13fa03.exe" & exit2⤵
- Suspicious use of WriteProcessMemory
PID:4444 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im "b854e4ad929ed52298efd7360164462b1c88514fd91e64ab686840ffea13fa03.exe" /f3⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:5076
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4288 -s 10682⤵
- Program crash
PID:5064
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 4288 -ip 42881⤵PID:2116