vidar | 317e6d0c61edc2d145f8f29a19e1ecee049f6f3cff8decd0f5d8171ab99f9813

General

Target

317e6d0c61edc2d145f8f29a19e1ecee049f6f3cff8decd0f5d8171ab99f9813.exe
Size

640KB
MD5

81843d9c10e65eeead6650766ba18d08
SHA1

618f493341aea26dc4d7c46dae854d5c1d56bcbf
SHA256

317e6d0c61edc2d145f8f29a19e1ecee049f6f3cff8decd0f5d8171ab99f9813
SHA512

89a75dcb396ab86a4bb495ed14176b2f0a7b31949fbba02e8cdcb04967595269048dd95683391e16cd431c235ff90d5a62e616ac997cb9f983a7f358dc3dab63

Score

10^/10

vidar 937 stealer

Malware Config

Extracted

Family

vidar

Version

41.6

Botnet

937

C2

https://mas.to/@lilocc

Attributes

profile_id
937

Signatures

Suspicious use of NtCreateProcessExOtherParentProcess 1 IoCs

Processes:

WerFault.exe

description pid process target process

PID 3076 created 1144 3076 WerFault.exe 317e6d0c61edc2d145f8f29a19e1ecee049f6f3cff8decd0f5d8171ab99f9813.exe
Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar

description	pid	process	target process
PID 3076 created 1144	3076	WerFault.exe	317e6d0c61edc2d145f8f29a19e1ecee049f6f3cff8decd0f5d8171ab99f9813.exe

Vidar Stealer 2 IoCs

stealer

Processes:

resource	yara_rule
behavioral2/memory/1144-131-0x0000000000670000-0x0000000000746000-memory.dmp	family_vidar
behavioral2/memory/1144-132-0x0000000000400000-0x00000000004D9000-memory.dmp	family_vidar

Drops file in Windows directory 3 IoCs

Processes:

TiWorker.exeWerFault.exe

description	ioc	process
File opened for modification	C:\Windows\Logs\CBS\CBS.log	TiWorker.exe
File opened for modification	C:\Windows\WinSxS\pending.xml	TiWorker.exe
File created	C:\Windows\AppCompat\Programs\Amcache.hve.tmp	WerFault.exe

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

4024 1144 WerFault.exe 317e6d0c61edc2d145f8f29a19e1ecee049f6f3cff8decd0f5d8171ab99f9813.exe

pid	pid_target	process	target process
4024	1144	WerFault.exe	317e6d0c61edc2d145f8f29a19e1ecee049f6f3cff8decd0f5d8171ab99f9813.exe

Checks processor information in registry 2 TTPs 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

MusNotifyIcon.exe

description	ioc	process
Key opened	\Registry\Machine\HARDWARE\DESCRIPTION\System\CentralProcessor\0	MusNotifyIcon.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	MusNotifyIcon.exe

Modifies data under HKEY_USERS 47 IoCs

Processes:

svchost.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyGroupBytes = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyRateBkBps = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\SwarmCount = "1"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\LinkLocalConnectionCount = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownlinkUsageBps = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\UplinkUsageBps = "0"	svchost.exe
Key created	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyLinkLocalBytes = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\UploadCount = "0"	svchost.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\CPUpct = "0.190694"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyRateFrBps = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyRateFrCnt = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\MonthID = "2"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\UplinkBps = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\BkDownloadRatePct = "45"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\UploadRatePct = "100"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\PriorityDownloadCount = "0"	svchost.exe
Key created	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Settings	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyLanBytes = "0"	svchost.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\CPUpct = "3.845978"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\MonthlyUploadRestriction = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\UploadMonthlyLanBytes = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyCacheHostBytes = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\LANConnectionCount = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\GroupConnectionCount = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\NormalDownloadPendingCount = "0"	svchost.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\CPUpct = "0.000000"	svchost.exe
Key created	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\CacheSizeBytes = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyCdnBytes = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownlinkBps = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\FrDownloadRatePct = "90"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\MemoryUsageKB = "4196"	svchost.exe
Key created	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Config	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyInternetBytes = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\PeerInfoCount = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\InternetConnectionCount = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\MemoryUsageKB = "4172"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\SwarmCount = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Config\DODownloadMode = "1"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\UploadMonthlyInternetBytes = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\CDNConnectionCount = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\PriorityDownloadPendingCount = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\NormalDownloadCount = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\MemoryUsageKB = "4200"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Config\DownloadMode_BackCompat = "1"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyRateBkCnt = "0"	svchost.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

WerFault.exe

pid process

4024 WerFault.exe
4024 WerFault.exe

pid	process
4024	WerFault.exe
4024	WerFault.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

TiWorker.exe

description	pid	process
Token: SeSecurityPrivilege	3292	TiWorker.exe
Token: SeRestorePrivilege	3292	TiWorker.exe
Token: SeBackupPrivilege	3292	TiWorker.exe
Token: SeBackupPrivilege	3292	TiWorker.exe
Token: SeRestorePrivilege	3292	TiWorker.exe
Token: SeSecurityPrivilege	3292	TiWorker.exe
Token: SeBackupPrivilege	3292	TiWorker.exe
Token: SeRestorePrivilege	3292	TiWorker.exe
Token: SeSecurityPrivilege	3292	TiWorker.exe
Token: SeBackupPrivilege	3292	TiWorker.exe
Token: SeRestorePrivilege	3292	TiWorker.exe
Token: SeSecurityPrivilege	3292	TiWorker.exe
Token: SeBackupPrivilege	3292	TiWorker.exe
Token: SeRestorePrivilege	3292	TiWorker.exe
Token: SeSecurityPrivilege	3292	TiWorker.exe
Token: SeBackupPrivilege	3292	TiWorker.exe
Token: SeRestorePrivilege	3292	TiWorker.exe
Token: SeSecurityPrivilege	3292	TiWorker.exe
Token: SeBackupPrivilege	3292	TiWorker.exe
Token: SeRestorePrivilege	3292	TiWorker.exe
Token: SeSecurityPrivilege	3292	TiWorker.exe
Token: SeBackupPrivilege	3292	TiWorker.exe
Token: SeRestorePrivilege	3292	TiWorker.exe
Token: SeSecurityPrivilege	3292	TiWorker.exe
Token: SeBackupPrivilege	3292	TiWorker.exe
Token: SeRestorePrivilege	3292	TiWorker.exe
Token: SeSecurityPrivilege	3292	TiWorker.exe
Token: SeBackupPrivilege	3292	TiWorker.exe
Token: SeRestorePrivilege	3292	TiWorker.exe
Token: SeSecurityPrivilege	3292	TiWorker.exe
Token: SeBackupPrivilege	3292	TiWorker.exe
Token: SeRestorePrivilege	3292	TiWorker.exe
Token: SeSecurityPrivilege	3292	TiWorker.exe
Token: SeBackupPrivilege	3292	TiWorker.exe
Token: SeRestorePrivilege	3292	TiWorker.exe
Token: SeSecurityPrivilege	3292	TiWorker.exe
Token: SeBackupPrivilege	3292	TiWorker.exe
Token: SeRestorePrivilege	3292	TiWorker.exe
Token: SeSecurityPrivilege	3292	TiWorker.exe
Token: SeBackupPrivilege	3292	TiWorker.exe
Token: SeRestorePrivilege	3292	TiWorker.exe
Token: SeSecurityPrivilege	3292	TiWorker.exe
Token: SeBackupPrivilege	3292	TiWorker.exe
Token: SeRestorePrivilege	3292	TiWorker.exe
Token: SeSecurityPrivilege	3292	TiWorker.exe
Token: SeBackupPrivilege	3292	TiWorker.exe
Token: SeRestorePrivilege	3292	TiWorker.exe
Token: SeSecurityPrivilege	3292	TiWorker.exe
Token: SeBackupPrivilege	3292	TiWorker.exe
Token: SeRestorePrivilege	3292	TiWorker.exe
Token: SeSecurityPrivilege	3292	TiWorker.exe
Token: SeBackupPrivilege	3292	TiWorker.exe
Token: SeRestorePrivilege	3292	TiWorker.exe
Token: SeSecurityPrivilege	3292	TiWorker.exe
Token: SeBackupPrivilege	3292	TiWorker.exe
Token: SeRestorePrivilege	3292	TiWorker.exe
Token: SeSecurityPrivilege	3292	TiWorker.exe
Token: SeBackupPrivilege	3292	TiWorker.exe
Token: SeRestorePrivilege	3292	TiWorker.exe
Token: SeSecurityPrivilege	3292	TiWorker.exe
Token: SeBackupPrivilege	3292	TiWorker.exe
Token: SeRestorePrivilege	3292	TiWorker.exe
Token: SeSecurityPrivilege	3292	TiWorker.exe
Token: SeBackupPrivilege	3292	TiWorker.exe

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

WerFault.exe

description	pid	process	target process
PID 3076 wrote to memory of 1144	3076	WerFault.exe	317e6d0c61edc2d145f8f29a19e1ecee049f6f3cff8decd0f5d8171ab99f9813.exe
PID 3076 wrote to memory of 1144	3076	WerFault.exe	317e6d0c61edc2d145f8f29a19e1ecee049f6f3cff8decd0f5d8171ab99f9813.exe

C:\Users\Admin\AppData\Local\Temp\317e6d0c61edc2d145f8f29a19e1ecee049f6f3cff8decd0f5d8171ab99f9813.exe
"C:\Users\Admin\AppData\Local\Temp\317e6d0c61edc2d145f8f29a19e1ecee049f6f3cff8decd0f5d8171ab99f9813.exe"
1⤵
PID:1144

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1144 -s 1032
2⤵
- Drops file in Windows directory
- Program crash
- Suspicious behavior: EnumeratesProcesses
PID:4024

C:\Windows\system32\MusNotifyIcon.exe
%systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
1⤵
- Checks processor information in registry
PID:4032

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k NetworkService -p
1⤵
- Modifies data under HKEY_USERS
PID:2452

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:3292

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 1144 -ip 1144
1⤵
- Suspicious use of NtCreateProcessExOtherParentProcess
- Suspicious use of WriteProcessMemory
PID:3076

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

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

memory/1144-130-0x00000000005F0000-0x000000000066C000-memory.dmp

Filesize
496KB

Download
memory/1144-131-0x0000000000670000-0x0000000000746000-memory.dmp

Filesize
856KB

Download
memory/1144-132-0x0000000000400000-0x00000000004D9000-memory.dmp

Filesize
868KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads