vidar | 599bc55a2a4456639a074536160db880ba5b6b8a9b6e0fd5fe28c1fd08a3a6c2

General

Target

599bc55a2a4456639a074536160db880ba5b6b8a9b6e0fd5fe28c1fd08a3a6c2.exe
Size

608KB
MD5

83ee887adb85f718446307f5e5afea0e
SHA1

1947d14f6546fcc6e55dd490e02e7b93f18098fc
SHA256

599bc55a2a4456639a074536160db880ba5b6b8a9b6e0fd5fe28c1fd08a3a6c2
SHA512

a66a0df8290200d9b7616d8602bd3e11f0db5d7d26270066971c5872fa55fc4c5232c9350166a7ce6bc8e7b58dd4b1e3cc636668755dece7247eb56c8f57167d

Score

10^/10

vidar 1008 discovery spyware stealer suricata

Malware Config

Extracted

Family

vidar

Version

41

Botnet

1008

C2

https://mas.to/@killern0

Attributes

profile_id
1008

Signatures

Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar
suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (Passwords.txt)
suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (Passwords.txt)
suricata
suricata: ET MALWARE Vidar/Arkei Stealer Client Data Upload
suricata: ET MALWARE Vidar/Arkei Stealer Client Data Upload
suricata
suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer Data Exfil
suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer Data Exfil
suricata

Vidar Stealer 2 IoCs

stealer

resource	yara_rule
behavioral1/memory/4796-114-0x0000000002340000-0x0000000002414000-memory.dmp	family_vidar
behavioral1/memory/4796-115-0x0000000000400000-0x000000000051E000-memory.dmp	family_vidar

Downloads MZ/PE file

Loads dropped DLL 2 IoCs

pid	Process
4796	599bc55a2a4456639a074536160db880ba5b6b8a9b6e0fd5fe28c1fd08a3a6c2.exe
4796	599bc55a2a4456639a074536160db880ba5b6b8a9b6e0fd5fe28c1fd08a3a6c2.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	599bc55a2a4456639a074536160db880ba5b6b8a9b6e0fd5fe28c1fd08a3a6c2.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	599bc55a2a4456639a074536160db880ba5b6b8a9b6e0fd5fe28c1fd08a3a6c2.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
5048	timeout.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
4956	taskkill.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
4796	599bc55a2a4456639a074536160db880ba5b6b8a9b6e0fd5fe28c1fd08a3a6c2.exe
4796	599bc55a2a4456639a074536160db880ba5b6b8a9b6e0fd5fe28c1fd08a3a6c2.exe
4796	599bc55a2a4456639a074536160db880ba5b6b8a9b6e0fd5fe28c1fd08a3a6c2.exe
4796	599bc55a2a4456639a074536160db880ba5b6b8a9b6e0fd5fe28c1fd08a3a6c2.exe
4796	599bc55a2a4456639a074536160db880ba5b6b8a9b6e0fd5fe28c1fd08a3a6c2.exe
4796	599bc55a2a4456639a074536160db880ba5b6b8a9b6e0fd5fe28c1fd08a3a6c2.exe
4796	599bc55a2a4456639a074536160db880ba5b6b8a9b6e0fd5fe28c1fd08a3a6c2.exe
4796	599bc55a2a4456639a074536160db880ba5b6b8a9b6e0fd5fe28c1fd08a3a6c2.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4956	taskkill.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4796 wrote to memory of 4912	4796	599bc55a2a4456639a074536160db880ba5b6b8a9b6e0fd5fe28c1fd08a3a6c2.exe	68
PID 4796 wrote to memory of 4912	4796	599bc55a2a4456639a074536160db880ba5b6b8a9b6e0fd5fe28c1fd08a3a6c2.exe	68
PID 4796 wrote to memory of 4912	4796	599bc55a2a4456639a074536160db880ba5b6b8a9b6e0fd5fe28c1fd08a3a6c2.exe	68
PID 4912 wrote to memory of 4956	4912	cmd.exe	70
PID 4912 wrote to memory of 4956	4912	cmd.exe	70
PID 4912 wrote to memory of 4956	4912	cmd.exe	70
PID 4912 wrote to memory of 5048	4912	cmd.exe	72
PID 4912 wrote to memory of 5048	4912	cmd.exe	72
PID 4912 wrote to memory of 5048	4912	cmd.exe	72

C:\Users\Admin\AppData\Local\Temp\599bc55a2a4456639a074536160db880ba5b6b8a9b6e0fd5fe28c1fd08a3a6c2.exe
"C:\Users\Admin\AppData\Local\Temp\599bc55a2a4456639a074536160db880ba5b6b8a9b6e0fd5fe28c1fd08a3a6c2.exe"
1⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4796
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im 599bc55a2a4456639a074536160db880ba5b6b8a9b6e0fd5fe28c1fd08a3a6c2.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\599bc55a2a4456639a074536160db880ba5b6b8a9b6e0fd5fe28c1fd08a3a6c2.exe" & del C:\ProgramData\*.dll & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4912
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im 599bc55a2a4456639a074536160db880ba5b6b8a9b6e0fd5fe28c1fd08a3a6c2.exe /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:4956
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 6
    3⤵
    - Delays execution with timeout.exe
    PID:5048

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

Replay Monitor

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Downloads

memory/4796-114-0x0000000002340000-0x0000000002414000-memory.dmp

Filesize
848KB

Download
memory/4796-115-0x0000000000400000-0x000000000051E000-memory.dmp

Filesize
1.1MB

Download

Analysis

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