onlylogger | 5083a072f5be065e151d3116ac3f78b0a9322897f9c2fe9e18d0c477b943540a

Analysis

max time kernel
91s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20220414-en
resource tags

arch:x64arch:x86image:win10v2004-20220414-enlocale:en-usos:windows10-2004-x64system
submitted
18/07/2022, 23:39

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General

Target
5083a072f5be065e151d3116ac3f78b0a9322897f9c2fe9e18d0c477b943540a.exe
Size 435KB
Sample220718-3nfy7sdaa2
SHA256 5083a072f5be065e151d3116ac3f78b0a9322897f9c2fe9e18d0c477b943540a
MD5 745e587c3cf97e13028cb0dea38d7e8f
SHA1 f046ffbc0f66c24d075100862c82c99e61958f62
SHA512 9a339d0e9fd5dac834b80314e3390ebb4cc5dc48848a9f9fdd647d4c543de275bef010c01d34af1264fd111d8be650d388c4a3aa4efc7fb43d23c9e1ef1f19a8
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 3 IoCs

resource	yara_rule
behavioral2/memory/4260-131-0x0000000000AF0000-0x0000000000B39000-memory.dmp	family_onlylogger
behavioral2/memory/4260-132-0x0000000000400000-0x000000000089C000-memory.dmp	family_onlylogger
behavioral2/memory/4260-135-0x0000000000400000-0x000000000089C000-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-1-5-21-1809750270-3141839489-3074374771-1000\Control Panel\International\Geo\Nation	5083a072f5be065e151d3116ac3f78b0a9322897f9c2fe9e18d0c477b943540a.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 7 IoCs

pid	pid_target	Process	procid_target
2300	4260	WerFault.exe	80
3616	4260	WerFault.exe	80
1056	4260	WerFault.exe	80
4220	4260	WerFault.exe	80
4480	4260	WerFault.exe	80
4316	4260	WerFault.exe	80
4784	4260	WerFault.exe	80

Kills process with taskkill 1 IoCs

evasion

pid	Process
768	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	768	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4260 wrote to memory of 380	4260	5083a072f5be065e151d3116ac3f78b0a9322897f9c2fe9e18d0c477b943540a.exe	93
PID 4260 wrote to memory of 380	4260	5083a072f5be065e151d3116ac3f78b0a9322897f9c2fe9e18d0c477b943540a.exe	93
PID 4260 wrote to memory of 380	4260	5083a072f5be065e151d3116ac3f78b0a9322897f9c2fe9e18d0c477b943540a.exe	93
PID 380 wrote to memory of 768	380	cmd.exe	97
PID 380 wrote to memory of 768	380	cmd.exe	97
PID 380 wrote to memory of 768	380	cmd.exe	97

C:\Users\Admin\AppData\Local\Temp\5083a072f5be065e151d3116ac3f78b0a9322897f9c2fe9e18d0c477b943540a.exe
"C:\Users\Admin\AppData\Local\Temp\5083a072f5be065e151d3116ac3f78b0a9322897f9c2fe9e18d0c477b943540a.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4260
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4260 -s 688
  2⤵
  - Program crash
  PID:2300
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4260 -s 712
  2⤵
  - Program crash
  PID:3616
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4260 -s 944
  2⤵
  - Program crash
  PID:1056
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4260 -s 796
  2⤵
  - Program crash
  PID:4220
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4260 -s 796
  2⤵
  - Program crash
  PID:4480
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4260 -s 988
  2⤵
  - Program crash
  PID:4316
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "5083a072f5be065e151d3116ac3f78b0a9322897f9c2fe9e18d0c477b943540a.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\5083a072f5be065e151d3116ac3f78b0a9322897f9c2fe9e18d0c477b943540a.exe" & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:380
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "5083a072f5be065e151d3116ac3f78b0a9322897f9c2fe9e18d0c477b943540a.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:768
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4260 -s 944
  2⤵
  - Program crash
  PID:4784

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 396 -p 4260 -ip 4260
1⤵
PID:804

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 196 -p 4260 -ip 4260
1⤵
PID:4896

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 500 -p 4260 -ip 4260
1⤵
PID:5088

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 4260 -ip 4260
1⤵
PID:4144

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 4260 -ip 4260
1⤵
PID:4324

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 564 -p 4260 -ip 4260
1⤵
PID:4104

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 620 -p 4260 -ip 4260
1⤵
PID:2264

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/4260-130-0x00000000008D3000-0x00000000008FC000-memory.dmp

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memory/4260-131-0x0000000000AF0000-0x0000000000B39000-memory.dmp

Download

memory/4260-132-0x0000000000400000-0x000000000089C000-memory.dmp

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memory/4260-135-0x0000000000400000-0x000000000089C000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads