vidar | 32057fad31bfb5015fc818847d245cd144a3c8166ae377cc4143ee5795ac06e5

General

Target

32057fad31bfb5015fc818847d245cd144a3c8166ae377cc4143ee5795ac06e5.exe
Size

655KB
MD5

5214689cb18baecfe0267940ad845398
SHA1

919514c68f7e009ddbb523fc17bbb2ba5604cac4
SHA256

32057fad31bfb5015fc818847d245cd144a3c8166ae377cc4143ee5795ac06e5
SHA512

a2b18ac30bf332c5f473b48f6a570013dc9e8ec51ed212032253226d620a7b8018a05d018d8a0eea32e51ad5382b2b519d54da6bdebab8bae5f72664e8f500b9

Score

10^/10

vidar 937 stealer

Malware Config

Extracted

Family

vidar

Version

48.1

Botnet

937

C2

https://koyu.space/@rspich

Attributes

profile_id
937

Signatures

Suspicious use of NtCreateProcessExOtherParentProcess 1 IoCs

Processes:

WerFault.exe

description pid process target process

PID 1744 created 1212 1744 WerFault.exe 32057fad31bfb5015fc818847d245cd144a3c8166ae377cc4143ee5795ac06e5.exe
Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar

description	pid	process	target process
PID 1744 created 1212	1744	WerFault.exe	32057fad31bfb5015fc818847d245cd144a3c8166ae377cc4143ee5795ac06e5.exe

Vidar Stealer 2 IoCs

stealer

Processes:

resource	yara_rule
behavioral2/memory/1212-135-0x0000000000400000-0x00000000004D8000-memory.dmp	family_vidar
behavioral2/memory/1212-134-0x00000000021C0000-0x0000000002295000-memory.dmp	family_vidar

Drops file in Windows directory 8 IoCs

Processes:

svchost.exeTiWorker.exe

description	ioc	process
File opened for modification	C:\Windows\SoftwareDistribution\DataStore\Logs\edb.log	svchost.exe
File opened for modification	C:\Windows\SoftwareDistribution\DataStore\DataStore.edb	svchost.exe
File opened for modification	C:\Windows\SoftwareDistribution\DataStore\DataStore.jfm	svchost.exe
File opened for modification	C:\Windows\SoftwareDistribution\ReportingEvents.log	svchost.exe
File opened for modification	C:\Windows\Logs\CBS\CBS.log	TiWorker.exe
File opened for modification	C:\Windows\WinSxS\pending.xml	TiWorker.exe
File opened for modification	C:\Windows\WindowsUpdate.log	svchost.exe
File opened for modification	C:\Windows\SoftwareDistribution\DataStore\Logs\edb.chk	svchost.exe

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

1956 1212 WerFault.exe 32057fad31bfb5015fc818847d245cd144a3c8166ae377cc4143ee5795ac06e5.exe

pid	pid_target	process	target process
1956	1212	WerFault.exe	32057fad31bfb5015fc818847d245cd144a3c8166ae377cc4143ee5795ac06e5.exe

Checks processor information in registry 2 TTPs 3 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

WerFault.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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	WerFault.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

WerFault.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

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

WerFault.exe

pid process

1956 WerFault.exe
1956 WerFault.exe

pid	process
1956	WerFault.exe
1956	WerFault.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

svchost.exeWerFault.exeTiWorker.exe

description	pid	process
Token: SeShutdownPrivilege	1952	svchost.exe
Token: SeCreatePagefilePrivilege	1952	svchost.exe
Token: SeShutdownPrivilege	1952	svchost.exe
Token: SeCreatePagefilePrivilege	1952	svchost.exe
Token: SeRestorePrivilege	1956	WerFault.exe
Token: SeBackupPrivilege	1956	WerFault.exe
Token: SeShutdownPrivilege	1952	svchost.exe
Token: SeCreatePagefilePrivilege	1952	svchost.exe
Token: SeSecurityPrivilege	1600	TiWorker.exe
Token: SeRestorePrivilege	1600	TiWorker.exe
Token: SeBackupPrivilege	1600	TiWorker.exe
Token: SeBackupPrivilege	1600	TiWorker.exe
Token: SeRestorePrivilege	1600	TiWorker.exe
Token: SeSecurityPrivilege	1600	TiWorker.exe
Token: SeBackupPrivilege	1600	TiWorker.exe
Token: SeRestorePrivilege	1600	TiWorker.exe
Token: SeSecurityPrivilege	1600	TiWorker.exe
Token: SeBackupPrivilege	1600	TiWorker.exe
Token: SeRestorePrivilege	1600	TiWorker.exe
Token: SeSecurityPrivilege	1600	TiWorker.exe
Token: SeBackupPrivilege	1600	TiWorker.exe
Token: SeRestorePrivilege	1600	TiWorker.exe
Token: SeSecurityPrivilege	1600	TiWorker.exe
Token: SeBackupPrivilege	1600	TiWorker.exe
Token: SeRestorePrivilege	1600	TiWorker.exe
Token: SeSecurityPrivilege	1600	TiWorker.exe
Token: SeBackupPrivilege	1600	TiWorker.exe
Token: SeRestorePrivilege	1600	TiWorker.exe
Token: SeSecurityPrivilege	1600	TiWorker.exe
Token: SeBackupPrivilege	1600	TiWorker.exe
Token: SeRestorePrivilege	1600	TiWorker.exe
Token: SeSecurityPrivilege	1600	TiWorker.exe
Token: SeBackupPrivilege	1600	TiWorker.exe
Token: SeRestorePrivilege	1600	TiWorker.exe
Token: SeSecurityPrivilege	1600	TiWorker.exe
Token: SeBackupPrivilege	1600	TiWorker.exe
Token: SeRestorePrivilege	1600	TiWorker.exe
Token: SeSecurityPrivilege	1600	TiWorker.exe
Token: SeBackupPrivilege	1600	TiWorker.exe
Token: SeRestorePrivilege	1600	TiWorker.exe
Token: SeSecurityPrivilege	1600	TiWorker.exe
Token: SeBackupPrivilege	1600	TiWorker.exe
Token: SeRestorePrivilege	1600	TiWorker.exe
Token: SeSecurityPrivilege	1600	TiWorker.exe
Token: SeBackupPrivilege	1600	TiWorker.exe
Token: SeRestorePrivilege	1600	TiWorker.exe
Token: SeSecurityPrivilege	1600	TiWorker.exe
Token: SeBackupPrivilege	1600	TiWorker.exe
Token: SeRestorePrivilege	1600	TiWorker.exe
Token: SeSecurityPrivilege	1600	TiWorker.exe
Token: SeBackupPrivilege	1600	TiWorker.exe
Token: SeRestorePrivilege	1600	TiWorker.exe
Token: SeSecurityPrivilege	1600	TiWorker.exe
Token: SeBackupPrivilege	1600	TiWorker.exe
Token: SeRestorePrivilege	1600	TiWorker.exe
Token: SeSecurityPrivilege	1600	TiWorker.exe
Token: SeBackupPrivilege	1600	TiWorker.exe
Token: SeRestorePrivilege	1600	TiWorker.exe
Token: SeSecurityPrivilege	1600	TiWorker.exe
Token: SeBackupPrivilege	1600	TiWorker.exe
Token: SeRestorePrivilege	1600	TiWorker.exe
Token: SeSecurityPrivilege	1600	TiWorker.exe
Token: SeBackupPrivilege	1600	TiWorker.exe
Token: SeRestorePrivilege	1600	TiWorker.exe

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

WerFault.exe

description	pid	process	target process
PID 1744 wrote to memory of 1212	1744	WerFault.exe	32057fad31bfb5015fc818847d245cd144a3c8166ae377cc4143ee5795ac06e5.exe
PID 1744 wrote to memory of 1212	1744	WerFault.exe	32057fad31bfb5015fc818847d245cd144a3c8166ae377cc4143ee5795ac06e5.exe

C:\Users\Admin\AppData\Local\Temp\32057fad31bfb5015fc818847d245cd144a3c8166ae377cc4143ee5795ac06e5.exe
"C:\Users\Admin\AppData\Local\Temp\32057fad31bfb5015fc818847d245cd144a3c8166ae377cc4143ee5795ac06e5.exe"
1⤵
PID:1212

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1212 -s 1040
2⤵
- Program crash
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1956

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 1212 -ip 1212
1⤵
- Suspicious use of NtCreateProcessExOtherParentProcess
- Suspicious use of WriteProcessMemory
PID:1744

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs -p -s wuauserv
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
PID:1952

C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exe
C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exe -Embedding
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
PID:1600

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

memory/1212-133-0x00000000020D0000-0x000000000214B000-memory.dmp

Filesize
492KB

Download
memory/1212-135-0x0000000000400000-0x00000000004D8000-memory.dmp

Filesize
864KB

Download
memory/1212-134-0x00000000021C0000-0x0000000002295000-memory.dmp

Filesize
852KB

Download
memory/1952-136-0x0000011E2BC20000-0x0000011E2BC30000-memory.dmp

Filesize
64KB

Download
memory/1952-137-0x0000011E2BC80000-0x0000011E2BC90000-memory.dmp

Filesize
64KB

Download
memory/1952-138-0x0000011E2E330000-0x0000011E2E334000-memory.dmp

Filesize
16KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads