vidar | 671191f9920d167f4f39d106093804de305c34e6853264dc8ccf1bcac6f6bc9b

General

Target

671191f9920d167f4f39d106093804de305c34e6853264dc8ccf1bcac6f6bc9b.exe
Size

580KB
MD5

6d61afb7164620cc4dd1d2999a06af7a
SHA1

35d50057bbc307dfc1f0aecca33d4a2734001eb4
SHA256

671191f9920d167f4f39d106093804de305c34e6853264dc8ccf1bcac6f6bc9b
SHA512

e5b59d59c5eacd293171a06bb842c4e3d0dbbbee354948884b613e88b6804d1b1857dde880bf85bd1b13a911982ef928b547d7931fa29af2d20e84c3a59c94fa
SSDEEP

12288:5K7qQnYbvtNPtv5uR1T3hxL3hnfWv/+u1fhVJ6fOpNarKa:5KtnYj/tv5ATh5hnfg/5fhVgWHAr

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 10 IoCs

stealer

resource	yara_rule
behavioral1/memory/2824-6-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral1/memory/2824-8-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral1/memory/2824-13-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral1/memory/2824-4-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral1/memory/2824-5-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral1/memory/2824-10-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral1/memory/2824-14-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral1/memory/2824-15-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral1/memory/2824-16-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral1/memory/2824-19-0x0000000000400000-0x0000000000676000-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 1288 set thread context of 2824	1288	671191f9920d167f4f39d106093804de305c34e6853264dc8ccf1bcac6f6bc9b.exe	29

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1732	2824	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	671191f9920d167f4f39d106093804de305c34e6853264dc8ccf1bcac6f6bc9b.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 2 IoCs

pid	Process
2824	MSBuild.exe
2824	MSBuild.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1288 wrote to memory of 2824	1288	671191f9920d167f4f39d106093804de305c34e6853264dc8ccf1bcac6f6bc9b.exe	29
PID 1288 wrote to memory of 2824	1288	671191f9920d167f4f39d106093804de305c34e6853264dc8ccf1bcac6f6bc9b.exe	29
PID 1288 wrote to memory of 2824	1288	671191f9920d167f4f39d106093804de305c34e6853264dc8ccf1bcac6f6bc9b.exe	29
PID 1288 wrote to memory of 2824	1288	671191f9920d167f4f39d106093804de305c34e6853264dc8ccf1bcac6f6bc9b.exe	29
PID 1288 wrote to memory of 2824	1288	671191f9920d167f4f39d106093804de305c34e6853264dc8ccf1bcac6f6bc9b.exe	29
PID 1288 wrote to memory of 2824	1288	671191f9920d167f4f39d106093804de305c34e6853264dc8ccf1bcac6f6bc9b.exe	29
PID 1288 wrote to memory of 2824	1288	671191f9920d167f4f39d106093804de305c34e6853264dc8ccf1bcac6f6bc9b.exe	29
PID 1288 wrote to memory of 2824	1288	671191f9920d167f4f39d106093804de305c34e6853264dc8ccf1bcac6f6bc9b.exe	29
PID 1288 wrote to memory of 2824	1288	671191f9920d167f4f39d106093804de305c34e6853264dc8ccf1bcac6f6bc9b.exe	29
PID 1288 wrote to memory of 2824	1288	671191f9920d167f4f39d106093804de305c34e6853264dc8ccf1bcac6f6bc9b.exe	29
PID 1288 wrote to memory of 2824	1288	671191f9920d167f4f39d106093804de305c34e6853264dc8ccf1bcac6f6bc9b.exe	29
PID 2824 wrote to memory of 1732	2824	MSBuild.exe	32
PID 2824 wrote to memory of 1732	2824	MSBuild.exe	32
PID 2824 wrote to memory of 1732	2824	MSBuild.exe	32
PID 2824 wrote to memory of 1732	2824	MSBuild.exe	32

C:\Users\Admin\AppData\Local\Temp\671191f9920d167f4f39d106093804de305c34e6853264dc8ccf1bcac6f6bc9b.exe
"C:\Users\Admin\AppData\Local\Temp\671191f9920d167f4f39d106093804de305c34e6853264dc8ccf1bcac6f6bc9b.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1288
- 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
  - Suspicious use of WriteProcessMemory
  PID:2824
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2824 -s 836
    3⤵
    - Program crash
    PID:1732

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

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/1288-0-0x00000000013EC000-0x00000000013EE000-memory.dmp

Filesize
8KB

Download
memory/2824-7-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/2824-6-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2824-8-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2824-13-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2824-4-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2824-5-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2824-2-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2824-3-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2824-1-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2824-10-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2824-14-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2824-15-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2824-16-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2824-19-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download

Analysis

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