onlylogger | 55d7d5a4addb1a4bc1af28941928a8e42070dca6577bf6e13ee6dcf75cb93e6b

Analysis

max time kernel
89s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20220721-en
resource tags

arch:x64arch:x86image:win10v2004-20220721-enlocale:en-usos:windows10-2004-x64system
submitted
25/07/2022, 14:49

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General

Target
55d7d5a4addb1a4bc1af28941928a8e42070dca6577bf6e13ee6dcf75cb93e6b.exe
Size 434KB
Sample220725-r66f2afbgn
SHA256 55d7d5a4addb1a4bc1af28941928a8e42070dca6577bf6e13ee6dcf75cb93e6b
MD5 3ee62ae7b37bfdbc36a3a40beb84b3cf
SHA1 f22015edba4903eb3883bd482436674a09e3bc79
SHA512 8260f37bd885f264b43f5668f8f0bb6511abe1eebffcac3bf06de661f252ee4320c785ee6a7964944e4aa211f70ebf11194b942f53570f4fa06c3576e110a96c
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 4 IoCs

resource	yara_rule
behavioral2/memory/4936-131-0x0000000001040000-0x0000000001089000-memory.dmp	family_onlylogger
behavioral2/memory/4936-132-0x0000000000400000-0x000000000103D000-memory.dmp	family_onlylogger
behavioral2/memory/4936-136-0x0000000001040000-0x0000000001089000-memory.dmp	family_onlylogger
behavioral2/memory/4936-137-0x0000000000400000-0x000000000103D000-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-1-5-21-2660308776-3705150086-26593515-1000\Control Panel\International\Geo\Nation	55d7d5a4addb1a4bc1af28941928a8e42070dca6577bf6e13ee6dcf75cb93e6b.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
3232	4936	WerFault.exe	81
4308	4936	WerFault.exe	81
4224	4936	WerFault.exe	81
1244	4936	WerFault.exe	81
3836	4936	WerFault.exe	81
4628	4936	WerFault.exe	81
4860	4936	WerFault.exe	81

Kills process with taskkill 1 IoCs

evasion

pid	Process
1908	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1908	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4936 wrote to memory of 4984	4936	55d7d5a4addb1a4bc1af28941928a8e42070dca6577bf6e13ee6dcf75cb93e6b.exe	94
PID 4936 wrote to memory of 4984	4936	55d7d5a4addb1a4bc1af28941928a8e42070dca6577bf6e13ee6dcf75cb93e6b.exe	94
PID 4936 wrote to memory of 4984	4936	55d7d5a4addb1a4bc1af28941928a8e42070dca6577bf6e13ee6dcf75cb93e6b.exe	94
PID 4984 wrote to memory of 1908	4984	cmd.exe	98
PID 4984 wrote to memory of 1908	4984	cmd.exe	98
PID 4984 wrote to memory of 1908	4984	cmd.exe	98

C:\Users\Admin\AppData\Local\Temp\55d7d5a4addb1a4bc1af28941928a8e42070dca6577bf6e13ee6dcf75cb93e6b.exe
"C:\Users\Admin\AppData\Local\Temp\55d7d5a4addb1a4bc1af28941928a8e42070dca6577bf6e13ee6dcf75cb93e6b.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4936
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4936 -s 712
  2⤵
  - Program crash
  PID:3232
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4936 -s 784
  2⤵
  - Program crash
  PID:4308
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4936 -s 788
  2⤵
  - Program crash
  PID:4224
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4936 -s 928
  2⤵
  - Program crash
  PID:1244
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4936 -s 920
  2⤵
  - Program crash
  PID:3836
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4936 -s 764
  2⤵
  - Program crash
  PID:4628
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "55d7d5a4addb1a4bc1af28941928a8e42070dca6577bf6e13ee6dcf75cb93e6b.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\55d7d5a4addb1a4bc1af28941928a8e42070dca6577bf6e13ee6dcf75cb93e6b.exe" & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4984
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "55d7d5a4addb1a4bc1af28941928a8e42070dca6577bf6e13ee6dcf75cb93e6b.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1908
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4936 -s 1032
  2⤵
  - Program crash
  PID:4860

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 384 -p 4936 -ip 4936
1⤵
PID:2112

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 4936 -ip 4936
1⤵
PID:4340

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 4936 -ip 4936
1⤵
PID:4256

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 560 -p 4936 -ip 4936
1⤵
PID:3444

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 4936 -ip 4936
1⤵
PID:3988

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 560 -p 4936 -ip 4936
1⤵
PID:2116

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 576 -p 4936 -ip 4936
1⤵
PID:4976

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/4936-130-0x0000000001123000-0x000000000114C000-memory.dmp

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memory/4936-131-0x0000000001040000-0x0000000001089000-memory.dmp

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memory/4936-132-0x0000000000400000-0x000000000103D000-memory.dmp

Download

memory/4936-135-0x0000000001123000-0x000000000114C000-memory.dmp

Download

memory/4936-136-0x0000000001040000-0x0000000001089000-memory.dmp

Download

memory/4936-137-0x0000000000400000-0x000000000103D000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads