vidar | c5b7b47009d2df885c7dfa88ed4b951418b2afe40856ea8f15b3e3609ad18968

General

Target

c5b7b47009d2df885c7dfa88ed4b951418b2afe40856ea8f15b3e3609ad18968.exe
Size

551KB
MD5

10bf19db275e6c6dabfaab5b41b4afdd
SHA1

83604c7f242fc1aee6b1b7d51dc2381620071a86
SHA256

c5b7b47009d2df885c7dfa88ed4b951418b2afe40856ea8f15b3e3609ad18968
SHA512

78749ed6f9cf338abdd41f24124c8520fb3ea15fc5e3423f12e7a2945afd820aebe5aeffa297abbd66d4f6a0a6fe830daa64a0ffefad2798886cf509a8b6ad69
SSDEEP

12288:PSD3oZTCvhjUk9mIRMUwKR/R7WZyDUu8DEZ92zpbkb5klkV+sP:PECctsIRMiRp7WyX83zJkqlkVr

Score

10^/10

vidar discovery stealer

Malware Config

Extracted

Family

vidar

C2

http://proxy.johnmccrea.com/

https://steamcommunity.com/profiles/76561199780418869

https://t.me/ae5ed

Attributes

user_agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:130.0) Gecko/20100101 Firefox/130.0

Signatures

Detect Vidar Stealer 7 IoCs

stealer

resource	yara_rule
behavioral2/memory/2708-1-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/2708-3-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/2708-6-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/2708-7-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/2708-8-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/2708-25-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/2708-26-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7

Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar
Downloads MZ/PE file

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1496 set thread context of 2708	1496	c5b7b47009d2df885c7dfa88ed4b951418b2afe40856ea8f15b3e3609ad18968.exe	89

Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2228	1496	WerFault.exe	88

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	c5b7b47009d2df885c7dfa88ed4b951418b2afe40856ea8f15b3e3609ad18968.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MSBuild.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	MSBuild.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	MSBuild.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2708	MSBuild.exe
2708	MSBuild.exe
2708	MSBuild.exe
2708	MSBuild.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 1496 wrote to memory of 2708	1496	c5b7b47009d2df885c7dfa88ed4b951418b2afe40856ea8f15b3e3609ad18968.exe	89
PID 1496 wrote to memory of 2708	1496	c5b7b47009d2df885c7dfa88ed4b951418b2afe40856ea8f15b3e3609ad18968.exe	89
PID 1496 wrote to memory of 2708	1496	c5b7b47009d2df885c7dfa88ed4b951418b2afe40856ea8f15b3e3609ad18968.exe	89
PID 1496 wrote to memory of 2708	1496	c5b7b47009d2df885c7dfa88ed4b951418b2afe40856ea8f15b3e3609ad18968.exe	89
PID 1496 wrote to memory of 2708	1496	c5b7b47009d2df885c7dfa88ed4b951418b2afe40856ea8f15b3e3609ad18968.exe	89
PID 1496 wrote to memory of 2708	1496	c5b7b47009d2df885c7dfa88ed4b951418b2afe40856ea8f15b3e3609ad18968.exe	89
PID 1496 wrote to memory of 2708	1496	c5b7b47009d2df885c7dfa88ed4b951418b2afe40856ea8f15b3e3609ad18968.exe	89
PID 1496 wrote to memory of 2708	1496	c5b7b47009d2df885c7dfa88ed4b951418b2afe40856ea8f15b3e3609ad18968.exe	89
PID 1496 wrote to memory of 2708	1496	c5b7b47009d2df885c7dfa88ed4b951418b2afe40856ea8f15b3e3609ad18968.exe	89
PID 1496 wrote to memory of 2708	1496	c5b7b47009d2df885c7dfa88ed4b951418b2afe40856ea8f15b3e3609ad18968.exe	89

C:\Users\Admin\AppData\Local\Temp\c5b7b47009d2df885c7dfa88ed4b951418b2afe40856ea8f15b3e3609ad18968.exe
"C:\Users\Admin\AppData\Local\Temp\c5b7b47009d2df885c7dfa88ed4b951418b2afe40856ea8f15b3e3609ad18968.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1496
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:2708
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1496 -s 252
  2⤵
  - Program crash
  PID:2228

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1496 -ip 1496
1⤵
PID:3884

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=4388,i,3210801877307184477,8078594481454001567,262144 --variations-seed-version --mojo-platform-channel-handle=3864 /prefetch:8
1⤵
PID:5072

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Browser Information Discovery

Query Registry

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/1496-0-0x0000000000D08000-0x0000000000D0A000-memory.dmp

Filesize
8KB

Download
memory/2708-1-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2708-3-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2708-6-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2708-7-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2708-8-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2708-10-0x0000000020210000-0x000000002046F000-memory.dmp

Filesize
2.4MB

Download
memory/2708-25-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2708-26-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download

Analysis

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