onlylogger | d9cdd267e3c00ae4f70e60a45aa03f22b1a59b42526a692d0e5bde6b5f1b99d4

General

Target

b11fa73625d6cba3dd6cf98467aea533.exe
Size

419KB
MD5

b11fa73625d6cba3dd6cf98467aea533
SHA1

004d3169fb9b2b6daeec6425f6da98c99a3b63e0
SHA256

d9cdd267e3c00ae4f70e60a45aa03f22b1a59b42526a692d0e5bde6b5f1b99d4
SHA512

2bba5cfaeec13bda9ffb03a16d1c2af9d85be0ec13b00d9f79e3c4ffbd334a7db00addb5b52b4f89a84a8a57349e29115d93532f866d37b9914c6b832247fdea

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 1836 created 2604	1836	WerFault.exe	b11fa73625d6cba3dd6cf98467aea533.exe
PID 2188 created 2604	2188	WerFault.exe	b11fa73625d6cba3dd6cf98467aea533.exe
PID 760 created 2604	760	WerFault.exe	b11fa73625d6cba3dd6cf98467aea533.exe
PID 2940 created 2604	2940	WerFault.exe	b11fa73625d6cba3dd6cf98467aea533.exe
PID 3520 created 2604	3520	WerFault.exe	b11fa73625d6cba3dd6cf98467aea533.exe
PID 1052 created 2604	1052	WerFault.exe	b11fa73625d6cba3dd6cf98467aea533.exe
PID 2308 created 2604	2308	WerFault.exe	b11fa73625d6cba3dd6cf98467aea533.exe

OnlyLogger Payload 2 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2604-131-0x00000000022B0000-0x00000000022FC000-memory.dmp	family_onlylogger
behavioral2/memory/2604-132-0x0000000000400000-0x0000000000578000-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:

b11fa73625d6cba3dd6cf98467aea533.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-790714498-1549421491-1643397139-1000\Control Panel\International\Geo\Nation	b11fa73625d6cba3dd6cf98467aea533.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
3728	2604	WerFault.exe	b11fa73625d6cba3dd6cf98467aea533.exe
2148	2604	WerFault.exe	b11fa73625d6cba3dd6cf98467aea533.exe
2568	2604	WerFault.exe	b11fa73625d6cba3dd6cf98467aea533.exe
3272	2604	WerFault.exe	b11fa73625d6cba3dd6cf98467aea533.exe
3784	2604	WerFault.exe	b11fa73625d6cba3dd6cf98467aea533.exe
3944	2604	WerFault.exe	b11fa73625d6cba3dd6cf98467aea533.exe
1368	2604	WerFault.exe	b11fa73625d6cba3dd6cf98467aea533.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.exeWerFault.exeWerFault.exeWerFault.exeMusNotification.exeWerFault.exeWerFault.exe

description	ioc	process
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\ProcessorNameString	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\~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\~MHz	WerFault.exe
Key opened	\Registry\Machine\HARDWARE\DESCRIPTION\System\CentralProcessor\0	MusNotification.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 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\~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 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 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 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 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 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

Kills process with taskkill 1 IoCs
evasion

Processes:

taskkill.exe

pid process

3456 taskkill.exe

pid	process
3456	taskkill.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

Processes:

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

pid	process
3728	WerFault.exe
3728	WerFault.exe
2148	WerFault.exe
2148	WerFault.exe
2568	WerFault.exe
2568	WerFault.exe
3272	WerFault.exe
3272	WerFault.exe
3784	WerFault.exe
3784	WerFault.exe
3944	WerFault.exe
3944	WerFault.exe
1368	WerFault.exe
1368	WerFault.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

Processes:

WerFault.exeMusNotification.exetaskkill.exe

description	pid	process
Token: SeRestorePrivilege	3728	WerFault.exe
Token: SeBackupPrivilege	3728	WerFault.exe
Token: SeShutdownPrivilege	4088	MusNotification.exe
Token: SeCreatePagefilePrivilege	4088	MusNotification.exe
Token: SeDebugPrivilege	3456	taskkill.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

WerFault.exeWerFault.exeWerFault.exeWerFault.exeWerFault.exeWerFault.exeb11fa73625d6cba3dd6cf98467aea533.exeWerFault.execmd.exe

description	pid	process	target process
PID 1836 wrote to memory of 2604	1836	WerFault.exe	b11fa73625d6cba3dd6cf98467aea533.exe
PID 1836 wrote to memory of 2604	1836	WerFault.exe	b11fa73625d6cba3dd6cf98467aea533.exe
PID 2188 wrote to memory of 2604	2188	WerFault.exe	b11fa73625d6cba3dd6cf98467aea533.exe
PID 2188 wrote to memory of 2604	2188	WerFault.exe	b11fa73625d6cba3dd6cf98467aea533.exe
PID 760 wrote to memory of 2604	760	WerFault.exe	b11fa73625d6cba3dd6cf98467aea533.exe
PID 760 wrote to memory of 2604	760	WerFault.exe	b11fa73625d6cba3dd6cf98467aea533.exe
PID 2940 wrote to memory of 2604	2940	WerFault.exe	b11fa73625d6cba3dd6cf98467aea533.exe
PID 2940 wrote to memory of 2604	2940	WerFault.exe	b11fa73625d6cba3dd6cf98467aea533.exe
PID 3520 wrote to memory of 2604	3520	WerFault.exe	b11fa73625d6cba3dd6cf98467aea533.exe
PID 3520 wrote to memory of 2604	3520	WerFault.exe	b11fa73625d6cba3dd6cf98467aea533.exe
PID 1052 wrote to memory of 2604	1052	WerFault.exe	b11fa73625d6cba3dd6cf98467aea533.exe
PID 1052 wrote to memory of 2604	1052	WerFault.exe	b11fa73625d6cba3dd6cf98467aea533.exe
PID 2604 wrote to memory of 2260	2604	b11fa73625d6cba3dd6cf98467aea533.exe	cmd.exe
PID 2604 wrote to memory of 2260	2604	b11fa73625d6cba3dd6cf98467aea533.exe	cmd.exe
PID 2604 wrote to memory of 2260	2604	b11fa73625d6cba3dd6cf98467aea533.exe	cmd.exe
PID 2308 wrote to memory of 2604	2308	WerFault.exe	b11fa73625d6cba3dd6cf98467aea533.exe
PID 2308 wrote to memory of 2604	2308	WerFault.exe	b11fa73625d6cba3dd6cf98467aea533.exe
PID 2260 wrote to memory of 3456	2260	cmd.exe	taskkill.exe
PID 2260 wrote to memory of 3456	2260	cmd.exe	taskkill.exe
PID 2260 wrote to memory of 3456	2260	cmd.exe	taskkill.exe

C:\Users\Admin\AppData\Local\Temp\b11fa73625d6cba3dd6cf98467aea533.exe
"C:\Users\Admin\AppData\Local\Temp\b11fa73625d6cba3dd6cf98467aea533.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2604

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2604 -s 688
2⤵
- Program crash
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3728

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2604 -s 780
2⤵
- Program crash
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
PID:2148

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2604 -s 764
2⤵
- Program crash
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
PID:2568

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2604 -s 944
2⤵
- Program crash
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
PID:3272

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2604 -s 968
2⤵
- Program crash
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
PID:3784

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2604 -s 984
2⤵
- Program crash
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
PID:3944

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c taskkill /im "b11fa73625d6cba3dd6cf98467aea533.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\b11fa73625d6cba3dd6cf98467aea533.exe" & exit
2⤵
- Suspicious use of WriteProcessMemory
PID:2260

C:\Windows\SysWOW64\taskkill.exe
taskkill /im "b11fa73625d6cba3dd6cf98467aea533.exe" /f
3⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:3456

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2604 -s 1108
2⤵
- Program crash
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
PID:1368

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 2604 -ip 2604
1⤵
- Suspicious use of NtCreateProcessExOtherParentProcess
- Suspicious use of WriteProcessMemory
PID:1836

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 2604 -ip 2604
1⤵
- Suspicious use of NtCreateProcessExOtherParentProcess
- Suspicious use of WriteProcessMemory
PID:2188

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 2604 -ip 2604
1⤵
- Suspicious use of NtCreateProcessExOtherParentProcess
- Suspicious use of WriteProcessMemory
PID:760

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 508 -p 2604 -ip 2604
1⤵
- Suspicious use of NtCreateProcessExOtherParentProcess
- Suspicious use of WriteProcessMemory
PID:2940

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 2604 -ip 2604
1⤵
- Suspicious use of NtCreateProcessExOtherParentProcess
- Suspicious use of WriteProcessMemory
PID:3520

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 2604 -ip 2604
1⤵
- Suspicious use of NtCreateProcessExOtherParentProcess
- Suspicious use of WriteProcessMemory
PID:1052

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 548 -p 2604 -ip 2604
1⤵
- Suspicious use of NtCreateProcessExOtherParentProcess
- Suspicious use of WriteProcessMemory
PID:2308

C:\Windows\system32\MusNotification.exe
C:\Windows\system32\MusNotification.exe
1⤵
- Checks processor information in registry
- Suspicious use of AdjustPrivilegeToken
PID:4088

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/2260-133-0x0000000000000000-mapping.dmp

Download
memory/2604-130-0x000000000071E000-0x0000000000749000-memory.dmp

Filesize
172KB

Download
memory/2604-131-0x00000000022B0000-0x00000000022FC000-memory.dmp

Filesize
304KB

Download
memory/2604-132-0x0000000000400000-0x0000000000578000-memory.dmp

Filesize
1.5MB

Download
memory/3456-134-0x0000000000000000-mapping.dmp

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads