onlylogger | d1a299c8b89530ee091ceeb89c172bdd9317816825b68926b0e368714e74d27f

General

Target

57620fe23fe46b9b50f5ec40bdc6b8fa.exe
Size

419KB
MD5

57620fe23fe46b9b50f5ec40bdc6b8fa
SHA1

fe38a4e6d66ad1cc621ea39e3d344d1fcd6227d2
SHA256

d1a299c8b89530ee091ceeb89c172bdd9317816825b68926b0e368714e74d27f
SHA512

671cd11456cc62533acfd62693db39488aa8964db4f4b4729ec1305b8b5550798bd1eae4107957eb5bc1b29d6023c8f28b0f33ccaf21a2b7169e5bf49125f1a3

Score

10^/10

onlylogger loader

Malware Config

Signatures

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

Suspicious use of NtCreateProcessExOtherParentProcess 7 IoCs

Processes:

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

description	pid	process	target process
PID 2932 created 3104	2932	WerFault.exe	57620fe23fe46b9b50f5ec40bdc6b8fa.exe
PID 632 created 3104	632	WerFault.exe	57620fe23fe46b9b50f5ec40bdc6b8fa.exe
PID 1720 created 3104	1720	WerFault.exe	57620fe23fe46b9b50f5ec40bdc6b8fa.exe
PID 3624 created 3104	3624	WerFault.exe	57620fe23fe46b9b50f5ec40bdc6b8fa.exe
PID 1776 created 3104	1776	WerFault.exe	57620fe23fe46b9b50f5ec40bdc6b8fa.exe
PID 3860 created 3104	3860	WerFault.exe	57620fe23fe46b9b50f5ec40bdc6b8fa.exe
PID 2416 created 3104	2416	WerFault.exe	57620fe23fe46b9b50f5ec40bdc6b8fa.exe

OnlyLogger Payload 2 IoCs

Processes:

resource	yara_rule
behavioral2/memory/3104-131-0x0000000000820000-0x000000000086C000-memory.dmp	family_onlylogger
behavioral2/memory/3104-132-0x0000000000400000-0x0000000000579000-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:

57620fe23fe46b9b50f5ec40bdc6b8fa.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-790714498-1549421491-1643397139-1000\Control Panel\International\Geo\Nation	57620fe23fe46b9b50f5ec40bdc6b8fa.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
1604	3104	WerFault.exe	57620fe23fe46b9b50f5ec40bdc6b8fa.exe
1068	3104	WerFault.exe	57620fe23fe46b9b50f5ec40bdc6b8fa.exe
2696	3104	WerFault.exe	57620fe23fe46b9b50f5ec40bdc6b8fa.exe
2940	3104	WerFault.exe	57620fe23fe46b9b50f5ec40bdc6b8fa.exe
2292	3104	WerFault.exe	57620fe23fe46b9b50f5ec40bdc6b8fa.exe
3752	3104	WerFault.exe	57620fe23fe46b9b50f5ec40bdc6b8fa.exe
2884	3104	WerFault.exe	57620fe23fe46b9b50f5ec40bdc6b8fa.exe

Checks processor information in registry 2 TTPs 23 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

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

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	WerFault.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	WerFault.exe
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	WerFault.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	MusNotification.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	WerFault.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	WerFault.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	WerFault.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	WerFault.exe
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	WerFault.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	WerFault.exe
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	WerFault.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	WerFault.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	WerFault.exe
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	WerFault.exe
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	WerFault.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	WerFault.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	WerFault.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	WerFault.exe
Key opened	\Registry\Machine\HARDWARE\DESCRIPTION\System\CentralProcessor\0	MusNotification.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	WerFault.exe
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	WerFault.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	WerFault.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	WerFault.exe

Enumerates system info in registry 2 TTPs 14 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

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

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	WerFault.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	WerFault.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	WerFault.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	WerFault.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	WerFault.exe
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	WerFault.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	WerFault.exe
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	WerFault.exe
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	WerFault.exe
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	WerFault.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	WerFault.exe
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	WerFault.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	WerFault.exe
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	WerFault.exe

Kills process with taskkill 1 IoCs
evasion

Processes:

taskkill.exe

pid process

3880 taskkill.exe

pid	process
3880	taskkill.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

Processes:

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

pid	process
1604	WerFault.exe
1604	WerFault.exe
1068	WerFault.exe
1068	WerFault.exe
2696	WerFault.exe
2696	WerFault.exe
2940	WerFault.exe
2940	WerFault.exe
2292	WerFault.exe
2292	WerFault.exe
3752	WerFault.exe
3752	WerFault.exe
2884	WerFault.exe
2884	WerFault.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

Processes:

WerFault.exeMusNotification.exetaskkill.exe

description	pid	process
Token: SeRestorePrivilege	1604	WerFault.exe
Token: SeBackupPrivilege	1604	WerFault.exe
Token: SeShutdownPrivilege	1800	MusNotification.exe
Token: SeCreatePagefilePrivilege	1800	MusNotification.exe
Token: SeDebugPrivilege	3880	taskkill.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

WerFault.exeWerFault.exeWerFault.exeWerFault.exeWerFault.exeWerFault.exe57620fe23fe46b9b50f5ec40bdc6b8fa.exeWerFault.execmd.exe

description	pid	process	target process
PID 2932 wrote to memory of 3104	2932	WerFault.exe	57620fe23fe46b9b50f5ec40bdc6b8fa.exe
PID 2932 wrote to memory of 3104	2932	WerFault.exe	57620fe23fe46b9b50f5ec40bdc6b8fa.exe
PID 632 wrote to memory of 3104	632	WerFault.exe	57620fe23fe46b9b50f5ec40bdc6b8fa.exe
PID 632 wrote to memory of 3104	632	WerFault.exe	57620fe23fe46b9b50f5ec40bdc6b8fa.exe
PID 1720 wrote to memory of 3104	1720	WerFault.exe	57620fe23fe46b9b50f5ec40bdc6b8fa.exe
PID 1720 wrote to memory of 3104	1720	WerFault.exe	57620fe23fe46b9b50f5ec40bdc6b8fa.exe
PID 3624 wrote to memory of 3104	3624	WerFault.exe	57620fe23fe46b9b50f5ec40bdc6b8fa.exe
PID 3624 wrote to memory of 3104	3624	WerFault.exe	57620fe23fe46b9b50f5ec40bdc6b8fa.exe
PID 1776 wrote to memory of 3104	1776	WerFault.exe	57620fe23fe46b9b50f5ec40bdc6b8fa.exe
PID 1776 wrote to memory of 3104	1776	WerFault.exe	57620fe23fe46b9b50f5ec40bdc6b8fa.exe
PID 3860 wrote to memory of 3104	3860	WerFault.exe	57620fe23fe46b9b50f5ec40bdc6b8fa.exe
PID 3860 wrote to memory of 3104	3860	WerFault.exe	57620fe23fe46b9b50f5ec40bdc6b8fa.exe
PID 3104 wrote to memory of 3564	3104	57620fe23fe46b9b50f5ec40bdc6b8fa.exe	cmd.exe
PID 3104 wrote to memory of 3564	3104	57620fe23fe46b9b50f5ec40bdc6b8fa.exe	cmd.exe
PID 3104 wrote to memory of 3564	3104	57620fe23fe46b9b50f5ec40bdc6b8fa.exe	cmd.exe
PID 2416 wrote to memory of 3104	2416	WerFault.exe	57620fe23fe46b9b50f5ec40bdc6b8fa.exe
PID 2416 wrote to memory of 3104	2416	WerFault.exe	57620fe23fe46b9b50f5ec40bdc6b8fa.exe
PID 3564 wrote to memory of 3880	3564	cmd.exe	taskkill.exe
PID 3564 wrote to memory of 3880	3564	cmd.exe	taskkill.exe
PID 3564 wrote to memory of 3880	3564	cmd.exe	taskkill.exe

C:\Users\Admin\AppData\Local\Temp\57620fe23fe46b9b50f5ec40bdc6b8fa.exe
"C:\Users\Admin\AppData\Local\Temp\57620fe23fe46b9b50f5ec40bdc6b8fa.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3104

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3104 -s 736
2⤵
- Program crash
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1604

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3104 -s 784
2⤵
- Program crash
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
PID:1068

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3104 -s 792
2⤵
- Program crash
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
PID:2696

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3104 -s 712
2⤵
- Program crash
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
PID:2940

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3104 -s 712
2⤵
- Program crash
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
PID:2292

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3104 -s 896
2⤵
- Program crash
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
PID:3752

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c taskkill /im "57620fe23fe46b9b50f5ec40bdc6b8fa.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\57620fe23fe46b9b50f5ec40bdc6b8fa.exe" & exit
2⤵
- Suspicious use of WriteProcessMemory
PID:3564

C:\Windows\SysWOW64\taskkill.exe
taskkill /im "57620fe23fe46b9b50f5ec40bdc6b8fa.exe" /f
3⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:3880

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3104 -s 1116
2⤵
- Program crash
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
PID:2884

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 3104 -ip 3104
1⤵
- Suspicious use of NtCreateProcessExOtherParentProcess
- Suspicious use of WriteProcessMemory
PID:2932

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 3104 -ip 3104
1⤵
- Suspicious use of NtCreateProcessExOtherParentProcess
- Suspicious use of WriteProcessMemory
PID:632

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 3104 -ip 3104
1⤵
- Suspicious use of NtCreateProcessExOtherParentProcess
- Suspicious use of WriteProcessMemory
PID:1720

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 3104 -ip 3104
1⤵
- Suspicious use of NtCreateProcessExOtherParentProcess
- Suspicious use of WriteProcessMemory
PID:3624

C:\Windows\system32\MusNotification.exe
C:\Windows\system32\MusNotification.exe
1⤵
- Checks processor information in registry
- Suspicious use of AdjustPrivilegeToken
PID:1800

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 3104 -ip 3104
1⤵
- Suspicious use of NtCreateProcessExOtherParentProcess
- Suspicious use of WriteProcessMemory
PID:1776

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 3104 -ip 3104
1⤵
- Suspicious use of NtCreateProcessExOtherParentProcess
- Suspicious use of WriteProcessMemory
PID:3860

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 176 -p 3104 -ip 3104
1⤵
- Suspicious use of NtCreateProcessExOtherParentProcess
- Suspicious use of WriteProcessMemory
PID:2416

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

3

T1012

System Information Discovery

4

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

memory/3104-130-0x000000000091E000-0x0000000000949000-memory.dmp

Filesize
172KB

Download
memory/3104-131-0x0000000000820000-0x000000000086C000-memory.dmp

Filesize
304KB

Download
memory/3104-132-0x0000000000400000-0x0000000000579000-memory.dmp

Filesize
1.5MB

Download
memory/3564-133-0x0000000000000000-mapping.dmp

Download
memory/3880-134-0x0000000000000000-mapping.dmp

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads