vidar | a1dc5574153d5053abd2b3818737ec424082491006bc2dcf439b79d168d7b15b

General

Target

a1dc5574153d5053abd2b3818737ec424082491006bc2dcf439b79d168d7b15b.exe
Size

571KB
MD5

7cc4518c0178f801094b2c60fd815050
SHA1

017d7ce204495228eaa13af1a6bac31e62ed7110
SHA256

a1dc5574153d5053abd2b3818737ec424082491006bc2dcf439b79d168d7b15b
SHA512

f3ba9721e5fd8be947dd9203624cfc86193f040f166a86212ca3be87232e8463664bb42294130c45900c9fd116b962dc1b11dcfd76c912196eb207151c20f366
SSDEEP

12288:Lgg1ZnYljsF91r+Nn15g0+tVCvfz06uN7Ds37AedrzivhVfTIQ4S:LznYEpG15g2vfAN7+7AetivhVMh

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 9 IoCs

stealer

resource	yara_rule
behavioral2/memory/4968-1-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/4968-3-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/4968-6-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/4968-16-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/4968-17-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/4968-27-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/4968-28-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/4968-36-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/4968-37-0x0000000000400000-0x0000000000676000-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 4040 set thread context of 4968	4040	a1dc5574153d5053abd2b3818737ec424082491006bc2dcf439b79d168d7b15b.exe	82

Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3036	4040	WerFault.exe	81

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	a1dc5574153d5053abd2b3818737ec424082491006bc2dcf439b79d168d7b15b.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
4968	MSBuild.exe
4968	MSBuild.exe
4968	MSBuild.exe
4968	MSBuild.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4040 wrote to memory of 4968	4040	a1dc5574153d5053abd2b3818737ec424082491006bc2dcf439b79d168d7b15b.exe	82
PID 4040 wrote to memory of 4968	4040	a1dc5574153d5053abd2b3818737ec424082491006bc2dcf439b79d168d7b15b.exe	82
PID 4040 wrote to memory of 4968	4040	a1dc5574153d5053abd2b3818737ec424082491006bc2dcf439b79d168d7b15b.exe	82
PID 4040 wrote to memory of 4968	4040	a1dc5574153d5053abd2b3818737ec424082491006bc2dcf439b79d168d7b15b.exe	82
PID 4040 wrote to memory of 4968	4040	a1dc5574153d5053abd2b3818737ec424082491006bc2dcf439b79d168d7b15b.exe	82
PID 4040 wrote to memory of 4968	4040	a1dc5574153d5053abd2b3818737ec424082491006bc2dcf439b79d168d7b15b.exe	82
PID 4040 wrote to memory of 4968	4040	a1dc5574153d5053abd2b3818737ec424082491006bc2dcf439b79d168d7b15b.exe	82
PID 4040 wrote to memory of 4968	4040	a1dc5574153d5053abd2b3818737ec424082491006bc2dcf439b79d168d7b15b.exe	82
PID 4040 wrote to memory of 4968	4040	a1dc5574153d5053abd2b3818737ec424082491006bc2dcf439b79d168d7b15b.exe	82
PID 4040 wrote to memory of 4968	4040	a1dc5574153d5053abd2b3818737ec424082491006bc2dcf439b79d168d7b15b.exe	82

C:\Users\Admin\AppData\Local\Temp\a1dc5574153d5053abd2b3818737ec424082491006bc2dcf439b79d168d7b15b.exe
"C:\Users\Admin\AppData\Local\Temp\a1dc5574153d5053abd2b3818737ec424082491006bc2dcf439b79d168d7b15b.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4040
- 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:4968
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4040 -s 244
  2⤵
  - Program crash
  PID:3036

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4040 -ip 4040
1⤵
PID:3364

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

Loading Replay Monitor...

Downloads

memory/4040-0-0x00000000003ED000-0x00000000003EF000-memory.dmp

Filesize
8KB

Download
memory/4968-1-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/4968-3-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/4968-6-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/4968-16-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/4968-17-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/4968-27-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/4968-19-0x0000000024860000-0x0000000024ABF000-memory.dmp

Filesize
2.4MB

Download
memory/4968-28-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/4968-36-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/4968-37-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download

Analysis

Sharing