Analysis
-
max time kernel
91s -
max time network
153s -
platform
windows10-2004_x64 -
resource
win10v2004-20220414-en -
submitted
20-04-2022 04:23
Static task
static1
Behavioral task
behavioral1
Sample
814081a9bfb3231b1c007488e7fb6c720586483f35330742bf3049e90398b85b.exe
Resource
win7-20220414-en
Behavioral task
behavioral2
Sample
814081a9bfb3231b1c007488e7fb6c720586483f35330742bf3049e90398b85b.exe
Resource
win10v2004-20220414-en
General
-
Target
814081a9bfb3231b1c007488e7fb6c720586483f35330742bf3049e90398b85b.exe
-
Size
376KB
-
MD5
b159b0ad1bf4638eef29031b66dfdfe9
-
SHA1
e81d45d019c20e3d256844f1b234350e5e4a7855
-
SHA256
814081a9bfb3231b1c007488e7fb6c720586483f35330742bf3049e90398b85b
-
SHA512
41351db0bd767270b40a83ab4c32910eac4d9192edeca0b2c460439228f6325296f70dfcacb8d776ce1456d0549cc19227eba4c6bb22d53cfa964a3989d4f7d5
Malware Config
Signatures
-
OnlyLogger
A tiny loader that uses IPLogger to get its payload.
-
OnlyLogger Payload 2 IoCs
resource yara_rule behavioral2/memory/4156-131-0x00000000007B0000-0x00000000007F6000-memory.dmp family_onlylogger behavioral2/memory/4156-132-0x0000000000400000-0x0000000000519000-memory.dmp family_onlylogger -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Control Panel\International\Geo\Nation 814081a9bfb3231b1c007488e7fb6c720586483f35330742bf3049e90398b85b.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
-
Program crash 1 IoCs
pid pid_target Process procid_target 5052 4156 WerFault.exe 82 -
Kills process with taskkill 1 IoCs
pid Process 1988 taskkill.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 1988 taskkill.exe -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 4156 wrote to memory of 4164 4156 814081a9bfb3231b1c007488e7fb6c720586483f35330742bf3049e90398b85b.exe 83 PID 4156 wrote to memory of 4164 4156 814081a9bfb3231b1c007488e7fb6c720586483f35330742bf3049e90398b85b.exe 83 PID 4156 wrote to memory of 4164 4156 814081a9bfb3231b1c007488e7fb6c720586483f35330742bf3049e90398b85b.exe 83 PID 4164 wrote to memory of 1988 4164 cmd.exe 86 PID 4164 wrote to memory of 1988 4164 cmd.exe 86 PID 4164 wrote to memory of 1988 4164 cmd.exe 86
Processes
-
C:\Users\Admin\AppData\Local\Temp\814081a9bfb3231b1c007488e7fb6c720586483f35330742bf3049e90398b85b.exe"C:\Users\Admin\AppData\Local\Temp\814081a9bfb3231b1c007488e7fb6c720586483f35330742bf3049e90398b85b.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4156 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c taskkill /im "814081a9bfb3231b1c007488e7fb6c720586483f35330742bf3049e90398b85b.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\814081a9bfb3231b1c007488e7fb6c720586483f35330742bf3049e90398b85b.exe" & exit2⤵
- Suspicious use of WriteProcessMemory
PID:4164 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im "814081a9bfb3231b1c007488e7fb6c720586483f35330742bf3049e90398b85b.exe" /f3⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:1988
-
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4156 -s 12682⤵
- Program crash
PID:5052
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 4156 -ip 41561⤵PID:4236