vidar | 6e1b586d59bda966bb6ebd2b75ba8f58310dfd619920fd6cb4ba794bbd52847c

General

Target
29f7e1b86fed5fca5ab285a50a6f1aa2.exe
Size 744KB
Sample211003-t1c9eafeb5
SHA256 6e1b586d59bda966bb6ebd2b75ba8f58310dfd619920fd6cb4ba794bbd52847c
MD5 29f7e1b86fed5fca5ab285a50a6f1aa2
SHA1 b97ab6bb14228ea4f3b5f8bfca4d58400b9cc17c
SHA512 5720c0b18d9900fd0a2f19823c222bd3b62ac777c8c3ab25a818ca8ed1d1ecca5e34b9b10874fed79a7091bd56bdf409bf4f69bf9c3f54797794fe40d219f66a
MD5 SHA1 SHA512

Score

10^/10

vidar 1008 discovery spyware stealer

Malware Config

Extracted

Family

vidar

Version

41.1

Botnet

1008

C2

https://mas.to/@bardak1ho

Attributes

profile_id
1008

Signatures

Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar

Vidar Stealer 2 IoCs

stealer

resource	yara_rule
behavioral2/memory/2208-116-0x0000000000400000-0x00000000004D7000-memory.dmp	family_vidar
behavioral2/memory/2208-115-0x00000000007F0000-0x00000000008C4000-memory.dmp	family_vidar

Downloads MZ/PE file

Loads dropped DLL 2 IoCs

pid	Process
2208	29f7e1b86fed5fca5ab285a50a6f1aa2.exe
2208	29f7e1b86fed5fca5ab285a50a6f1aa2.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Accesses 2FA software files, possible credential harvesting 2 TTPs
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials in Files
T1081
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
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

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	29f7e1b86fed5fca5ab285a50a6f1aa2.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	29f7e1b86fed5fca5ab285a50a6f1aa2.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
588	timeout.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
3960	taskkill.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
2208	29f7e1b86fed5fca5ab285a50a6f1aa2.exe
2208	29f7e1b86fed5fca5ab285a50a6f1aa2.exe
2208	29f7e1b86fed5fca5ab285a50a6f1aa2.exe
2208	29f7e1b86fed5fca5ab285a50a6f1aa2.exe
2208	29f7e1b86fed5fca5ab285a50a6f1aa2.exe
2208	29f7e1b86fed5fca5ab285a50a6f1aa2.exe
2208	29f7e1b86fed5fca5ab285a50a6f1aa2.exe
2208	29f7e1b86fed5fca5ab285a50a6f1aa2.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3960	taskkill.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2208 wrote to memory of 3576	2208	29f7e1b86fed5fca5ab285a50a6f1aa2.exe	70
PID 2208 wrote to memory of 3576	2208	29f7e1b86fed5fca5ab285a50a6f1aa2.exe	70
PID 2208 wrote to memory of 3576	2208	29f7e1b86fed5fca5ab285a50a6f1aa2.exe	70
PID 3576 wrote to memory of 3960	3576	cmd.exe	72
PID 3576 wrote to memory of 3960	3576	cmd.exe	72
PID 3576 wrote to memory of 3960	3576	cmd.exe	72
PID 3576 wrote to memory of 588	3576	cmd.exe	74
PID 3576 wrote to memory of 588	3576	cmd.exe	74
PID 3576 wrote to memory of 588	3576	cmd.exe	74

C:\Users\Admin\AppData\Local\Temp\29f7e1b86fed5fca5ab285a50a6f1aa2.exe
"C:\Users\Admin\AppData\Local\Temp\29f7e1b86fed5fca5ab285a50a6f1aa2.exe"
1⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2208
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im 29f7e1b86fed5fca5ab285a50a6f1aa2.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\29f7e1b86fed5fca5ab285a50a6f1aa2.exe" & del C:\ProgramData\*.dll & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3576
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im 29f7e1b86fed5fca5ab285a50a6f1aa2.exe /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:3960
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 6
    3⤵
    - Delays execution with timeout.exe
    PID:588

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

3

T1081

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

3

T1005

Command and Control

Exfiltration

Impact

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Downloads

memory/2208-116-0x0000000000400000-0x00000000004D7000-memory.dmp

Download

memory/2208-115-0x00000000007F0000-0x00000000008C4000-memory.dmp