vidar | 6855feaad22b9fab33f782a030dca8efeceb300eb547e0a9ce5cb36520f1bddc

General

Target

8fd06cfe41c9aa5a7b58488d0bc2bd18.exe
Size

598KB
MD5

8fd06cfe41c9aa5a7b58488d0bc2bd18
SHA1

915937f169d3dc5fe918435e81f645074304cf9c
SHA256

6855feaad22b9fab33f782a030dca8efeceb300eb547e0a9ce5cb36520f1bddc
SHA512

57f51f7a42108d41f4583fec480d35e634b5d228c49adee24d1c21e0a01142f8edd2781ff8a1168e8350e7d988da2eaf3e0fd53b6a1a5aac891225d2a4e5ab3b
SSDEEP

12288:VUqvMSDFMq2q0KOfCy2PD4OCB7lR4Cdxd/8eWS64fLETEO:VU8HDFFOayc1CB7laCtS+mt

Score

10^/10

vidar 8ecc9c7eaebfdf2a8cc0586d7419d6ea discovery stealer

Malware Config

Extracted

Family

vidar

Botnet

8ecc9c7eaebfdf2a8cc0586d7419d6ea

C2

https://t.me/maslengdsa

https://steamcommunity.com/profiles/76561199786602107

https://t.me/lpnjoke

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 11 IoCs

stealer

resource	yara_rule
behavioral1/memory/2680-8-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral1/memory/2680-10-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral1/memory/2680-6-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral1/memory/2680-5-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral1/memory/2680-4-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral1/memory/2680-13-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral1/memory/2680-147-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral1/memory/2680-158-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral1/memory/2680-177-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral1/memory/2680-211-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral1/memory/2680-237-0x0000000000400000-0x0000000000676000-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 2788 set thread context of 2680	2788	8fd06cfe41c9aa5a7b58488d0bc2bd18.exe	30

Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2732	2788	WerFault.exe	29

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	8fd06cfe41c9aa5a7b58488d0bc2bd18.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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	MSBuild.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	MSBuild.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2680	MSBuild.exe
2680	MSBuild.exe
2680	MSBuild.exe
2680	MSBuild.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2788 wrote to memory of 2680	2788	8fd06cfe41c9aa5a7b58488d0bc2bd18.exe	30
PID 2788 wrote to memory of 2680	2788	8fd06cfe41c9aa5a7b58488d0bc2bd18.exe	30
PID 2788 wrote to memory of 2680	2788	8fd06cfe41c9aa5a7b58488d0bc2bd18.exe	30
PID 2788 wrote to memory of 2680	2788	8fd06cfe41c9aa5a7b58488d0bc2bd18.exe	30
PID 2788 wrote to memory of 2680	2788	8fd06cfe41c9aa5a7b58488d0bc2bd18.exe	30
PID 2788 wrote to memory of 2680	2788	8fd06cfe41c9aa5a7b58488d0bc2bd18.exe	30
PID 2788 wrote to memory of 2680	2788	8fd06cfe41c9aa5a7b58488d0bc2bd18.exe	30
PID 2788 wrote to memory of 2680	2788	8fd06cfe41c9aa5a7b58488d0bc2bd18.exe	30
PID 2788 wrote to memory of 2680	2788	8fd06cfe41c9aa5a7b58488d0bc2bd18.exe	30
PID 2788 wrote to memory of 2680	2788	8fd06cfe41c9aa5a7b58488d0bc2bd18.exe	30
PID 2788 wrote to memory of 2680	2788	8fd06cfe41c9aa5a7b58488d0bc2bd18.exe	30
PID 2788 wrote to memory of 2732	2788	8fd06cfe41c9aa5a7b58488d0bc2bd18.exe	31
PID 2788 wrote to memory of 2732	2788	8fd06cfe41c9aa5a7b58488d0bc2bd18.exe	31
PID 2788 wrote to memory of 2732	2788	8fd06cfe41c9aa5a7b58488d0bc2bd18.exe	31
PID 2788 wrote to memory of 2732	2788	8fd06cfe41c9aa5a7b58488d0bc2bd18.exe	31

C:\Users\Admin\AppData\Local\Temp\8fd06cfe41c9aa5a7b58488d0bc2bd18.exe
"C:\Users\Admin\AppData\Local\Temp\8fd06cfe41c9aa5a7b58488d0bc2bd18.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2788
- 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:2680
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2788 -s 96
  2⤵
  - Program crash
  PID:2732

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

C:\Users\Admin\AppData\Local\Temp\Cab6CB9.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar6D49.tmp

Filesize
181KB

MD5
4ea6026cf93ec6338144661bf1202cd1

SHA1
a1dec9044f750ad887935a01430bf49322fbdcb7

SHA256
8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

SHA512
6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

Download Submit
memory/2680-7-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/2680-8-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2680-237-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2680-6-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2680-5-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2680-3-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2680-2-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2680-4-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2680-13-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2680-10-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2680-1-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2680-147-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2680-158-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2680-177-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2680-196-0x000000001DAC0000-0x000000001DD1F000-memory.dmp

Filesize
2.4MB

Download
memory/2680-211-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2788-0-0x000000000036F000-0x0000000000371000-memory.dmp

Filesize
8KB

Download

Analysis

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