onlylogger | 539efe24846cc5cd476d50b6690d508743e62b0358bf9aa74fa4dda455bf3f4d

General

Target

539efe24846cc5cd476d50b6690d508743e62b0358bf9aa74fa4dda455bf3f4d.exe
Size

434KB
MD5

e60a53fdbb9c3b317fa294b1f2a5b632
SHA1

587c6f730e6ab168e6d697e4bd02b44df65f4205
SHA256

539efe24846cc5cd476d50b6690d508743e62b0358bf9aa74fa4dda455bf3f4d
SHA512

998c91693fed0519b571607c59135a655dd6f2eae6c3ffe0ff05680d33324227121fd9f8c6ecc717e2aa95d34687d17d55f360ad5a280c32d9003a5776ebf09d

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

Processes:

resource	yara_rule
behavioral2/memory/2656-131-0x0000000001040000-0x0000000001089000-memory.dmp	family_onlylogger
behavioral2/memory/2656-132-0x0000000000400000-0x000000000103D000-memory.dmp	family_onlylogger
behavioral2/memory/2656-135-0x0000000000400000-0x000000000103D000-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

Processes:

539efe24846cc5cd476d50b6690d508743e62b0358bf9aa74fa4dda455bf3f4d.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1101907861-274115917-2188613224-1000\Control Panel\International\Geo\Nation	539efe24846cc5cd476d50b6690d508743e62b0358bf9aa74fa4dda455bf3f4d.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

Processes:

WerFault.exeWerFault.exeWerFault.exeWerFault.exeWerFault.exeWerFault.exeWerFault.exe

pid	pid_target	process	target process
2092	2656	WerFault.exe	539efe24846cc5cd476d50b6690d508743e62b0358bf9aa74fa4dda455bf3f4d.exe
4560	2656	WerFault.exe	539efe24846cc5cd476d50b6690d508743e62b0358bf9aa74fa4dda455bf3f4d.exe
1824	2656	WerFault.exe	539efe24846cc5cd476d50b6690d508743e62b0358bf9aa74fa4dda455bf3f4d.exe
4496	2656	WerFault.exe	539efe24846cc5cd476d50b6690d508743e62b0358bf9aa74fa4dda455bf3f4d.exe
4368	2656	WerFault.exe	539efe24846cc5cd476d50b6690d508743e62b0358bf9aa74fa4dda455bf3f4d.exe
2088	2656	WerFault.exe	539efe24846cc5cd476d50b6690d508743e62b0358bf9aa74fa4dda455bf3f4d.exe
4688	2656	WerFault.exe	539efe24846cc5cd476d50b6690d508743e62b0358bf9aa74fa4dda455bf3f4d.exe

Kills process with taskkill 1 IoCs
evasion

Processes:

taskkill.exe

pid process

424 taskkill.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 424 taskkill.exe

pid	process
424	taskkill.exe

description	pid	process
Token: SeDebugPrivilege	424	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

539efe24846cc5cd476d50b6690d508743e62b0358bf9aa74fa4dda455bf3f4d.execmd.exe

description	pid	process	target process
PID 2656 wrote to memory of 2644	2656	539efe24846cc5cd476d50b6690d508743e62b0358bf9aa74fa4dda455bf3f4d.exe	cmd.exe
PID 2656 wrote to memory of 2644	2656	539efe24846cc5cd476d50b6690d508743e62b0358bf9aa74fa4dda455bf3f4d.exe	cmd.exe
PID 2656 wrote to memory of 2644	2656	539efe24846cc5cd476d50b6690d508743e62b0358bf9aa74fa4dda455bf3f4d.exe	cmd.exe
PID 2644 wrote to memory of 424	2644	cmd.exe	taskkill.exe
PID 2644 wrote to memory of 424	2644	cmd.exe	taskkill.exe
PID 2644 wrote to memory of 424	2644	cmd.exe	taskkill.exe

C:\Users\Admin\AppData\Local\Temp\539efe24846cc5cd476d50b6690d508743e62b0358bf9aa74fa4dda455bf3f4d.exe
"C:\Users\Admin\AppData\Local\Temp\539efe24846cc5cd476d50b6690d508743e62b0358bf9aa74fa4dda455bf3f4d.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2656

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2656 -s 740
2⤵
- Program crash
PID:2092

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2656 -s 688
2⤵
- Program crash
PID:4560

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2656 -s 796
2⤵
- Program crash
PID:1824

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2656 -s 944
2⤵
- Program crash
PID:4496

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2656 -s 944
2⤵
- Program crash
PID:4368

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2656 -s 796
2⤵
- Program crash
PID:2088

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c taskkill /im "539efe24846cc5cd476d50b6690d508743e62b0358bf9aa74fa4dda455bf3f4d.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\539efe24846cc5cd476d50b6690d508743e62b0358bf9aa74fa4dda455bf3f4d.exe" & exit
2⤵
- Suspicious use of WriteProcessMemory
PID:2644

C:\Windows\SysWOW64\taskkill.exe
taskkill /im "539efe24846cc5cd476d50b6690d508743e62b0358bf9aa74fa4dda455bf3f4d.exe" /f
3⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:424

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2656 -s 712
2⤵
- Program crash
PID:4688

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 2656 -ip 2656
1⤵
PID:4520

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 2656 -ip 2656
1⤵
PID:4588

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 2656 -ip 2656
1⤵
PID:4508

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 2656 -ip 2656
1⤵
PID:1064

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 2656 -ip 2656
1⤵
PID:732

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 548 -p 2656 -ip 2656
1⤵
PID:4280

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 2656 -ip 2656
1⤵
PID:1252

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

memory/424-134-0x0000000000000000-mapping.dmp

Download
memory/2644-133-0x0000000000000000-mapping.dmp

Download
memory/2656-130-0x00000000010B3000-0x00000000010DC000-memory.dmp

Filesize
164KB

Download
memory/2656-131-0x0000000001040000-0x0000000001089000-memory.dmp

Filesize
292KB

Download
memory/2656-132-0x0000000000400000-0x000000000103D000-memory.dmp

Filesize
12.2MB

Download
memory/2656-135-0x0000000000400000-0x000000000103D000-memory.dmp

Filesize
12.2MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads