vidar | 798773e476a288869b80bc5b3029f754a5b890cd02b2dedfbb8e9d4aecc39f30

General

Target

798773e476a288869b80bc5b3029f754a5b890cd02b2dedfbb8e9d4aecc39f30.exe
Size

283KB
MD5

a8fef7b198fa122ead5bcf5b84f2737b
SHA1

00ac0d1d6354ba397ea4d69265ed227817a29d8f
SHA256

798773e476a288869b80bc5b3029f754a5b890cd02b2dedfbb8e9d4aecc39f30
SHA512

acf483ef4846e1bff039c615eca505547e3739c979a6ecf08bda31869d69c3b71dcbdab045ac28bfcd5bd8bc92201fd5841b54c48ccb39986b712a99f8ef7d3b
SSDEEP

6144:/aYRRx/KV1vo9X/FLI/tiDS/MqmPJOUv5/iqfMvBO71BBEO:/9Lx/i1a/FL2tKeOJv5/iqEY7FEO

Score

10^/10

vidar discovery stealer

Malware Config

Extracted

Family

vidar

C2

https://t.me/fneogr

https://t.me/edm0d

https://steamcommunity.com/profiles/76561199768374681

Attributes

user_agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36 OPR/110.0.0.0

Signatures

Detect Vidar Stealer 5 IoCs

stealer

resource	yara_rule
behavioral1/memory/3084-4-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral1/memory/3084-10-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral1/memory/3084-8-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral1/memory/3084-16-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral1/memory/3084-17-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7

Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar
Downloads MZ/PE file
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3056 set thread context of 3084	3056	798773e476a288869b80bc5b3029f754a5b890cd02b2dedfbb8e9d4aecc39f30.exe	95

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	798773e476a288869b80bc5b3029f754a5b890cd02b2dedfbb8e9d4aecc39f30.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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	RegAsm.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	RegAsm.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3084	RegAsm.exe
3084	RegAsm.exe
3084	RegAsm.exe
3084	RegAsm.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 3056 wrote to memory of 3084	3056	798773e476a288869b80bc5b3029f754a5b890cd02b2dedfbb8e9d4aecc39f30.exe	95
PID 3056 wrote to memory of 3084	3056	798773e476a288869b80bc5b3029f754a5b890cd02b2dedfbb8e9d4aecc39f30.exe	95
PID 3056 wrote to memory of 3084	3056	798773e476a288869b80bc5b3029f754a5b890cd02b2dedfbb8e9d4aecc39f30.exe	95
PID 3056 wrote to memory of 3084	3056	798773e476a288869b80bc5b3029f754a5b890cd02b2dedfbb8e9d4aecc39f30.exe	95
PID 3056 wrote to memory of 3084	3056	798773e476a288869b80bc5b3029f754a5b890cd02b2dedfbb8e9d4aecc39f30.exe	95
PID 3056 wrote to memory of 3084	3056	798773e476a288869b80bc5b3029f754a5b890cd02b2dedfbb8e9d4aecc39f30.exe	95
PID 3056 wrote to memory of 3084	3056	798773e476a288869b80bc5b3029f754a5b890cd02b2dedfbb8e9d4aecc39f30.exe	95
PID 3056 wrote to memory of 3084	3056	798773e476a288869b80bc5b3029f754a5b890cd02b2dedfbb8e9d4aecc39f30.exe	95
PID 3056 wrote to memory of 3084	3056	798773e476a288869b80bc5b3029f754a5b890cd02b2dedfbb8e9d4aecc39f30.exe	95
PID 3056 wrote to memory of 3084	3056	798773e476a288869b80bc5b3029f754a5b890cd02b2dedfbb8e9d4aecc39f30.exe	95

C:\Users\Admin\AppData\Local\Temp\798773e476a288869b80bc5b3029f754a5b890cd02b2dedfbb8e9d4aecc39f30.exe
"C:\Users\Admin\AppData\Local\Temp\798773e476a288869b80bc5b3029f754a5b890cd02b2dedfbb8e9d4aecc39f30.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3056
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:3084

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4404,i,10597648459838880772,16562651767759956329,262144 --variations-seed-version --mojo-platform-channel-handle=4396 /prefetch:8
1⤵
PID:4108

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/3056-0-0x000000007448E000-0x000000007448F000-memory.dmp

Filesize
4KB

Download
memory/3056-1-0x00000000007A0000-0x00000000007EA000-memory.dmp

Filesize
296KB

Download
memory/3056-3-0x000000007448E000-0x000000007448F000-memory.dmp

Filesize
4KB

Download
memory/3056-6-0x0000000074480000-0x0000000074C30000-memory.dmp

Filesize
7.7MB

Download
memory/3056-13-0x0000000074480000-0x0000000074C30000-memory.dmp

Filesize
7.7MB

Download
memory/3084-4-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/3084-10-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/3084-8-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/3084-16-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/3084-17-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download

Analysis

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