onlylogger | b854e4ad929ed52298efd7360164462b1c88514fd91e64ab686840ffea13fa03

Analysis

max time kernel
193s
max time network
226s
platform
windows10-2004_x64
resource
win10v2004-20220414-en
submitted
08/05/2022, 06:21

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General

Target
b854e4ad929ed52298efd7360164462b1c88514fd91e64ab686840ffea13fa03.exe
Size 234KB
Sample220508-g4b5ashcc8
SHA256 b854e4ad929ed52298efd7360164462b1c88514fd91e64ab686840ffea13fa03
MD5 646851362409b6712678ce00b0882750
SHA1 a1725297e2ce8348d05a29f108fc10c2728ce074
SHA512 6d0c63e90e58853caa03cd01ee1e1e9e75418e03b29062768faa2217d19824279cb26e45fffe53353e3d4faa1dc338531a83326f0390dd038d661d832f1b99c9
MD5 SHA1 SHA512

Score

10^/10

onlylogger loader

Malware Config

Signatures

OnlyLogger
A tiny loader that uses IPLogger to get its payload.
loader onlylogger

OnlyLogger Payload 2 IoCs

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.

Query Registry

T1012

System Information Discovery

T1082

description	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.

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
5064	4288	WerFault.exe	79

Kills process with taskkill 1 IoCs

evasion

pid	Process
5076	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	5076	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	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

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" & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4444
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "b854e4ad929ed52298efd7360164462b1c88514fd91e64ab686840ffea13fa03.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:5076
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4288 -s 1068
  2⤵
  - Program crash
  PID:5064

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 4288 -ip 4288
1⤵
PID:2116

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/4288-130-0x00000000012E3000-0x000000000130B000-memory.dmp

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memory/4288-131-0x0000000001070000-0x00000000010B6000-memory.dmp

Download

memory/4288-132-0x0000000000400000-0x0000000000F98000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads