vidar | 0f0da1d14f83ff61c448df9161c01d1ee11cf4dccbbc48df79fff89f2fd18454

General

Target

4c6b59d26a2a995a788b021f1f30f764.exe
Size

606KB
MD5

4c6b59d26a2a995a788b021f1f30f764
SHA1

b6d94ef132caed5c2b01d7b63a1788647c9a4042
SHA256

0f0da1d14f83ff61c448df9161c01d1ee11cf4dccbbc48df79fff89f2fd18454
SHA512

d429e2166ba853f500d142ee943e72ade83c1ef20522563f911551303b40220821b9c7b73b9124c05b0e116960c90872fbe94cafec3ac8c2eac8a3f344f0c81a

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/1432-55-0x0000000000520000-0x00000000005F4000-memory.dmp	family_vidar
behavioral1/memory/1432-56-0x0000000000400000-0x000000000051E000-memory.dmp	family_vidar

Downloads MZ/PE file

Deletes itself 1 IoCs

pid	Process
564	cmd.exe

Loads dropped DLL 4 IoCs

pid	Process
1432	4c6b59d26a2a995a788b021f1f30f764.exe
1432	4c6b59d26a2a995a788b021f1f30f764.exe
1432	4c6b59d26a2a995a788b021f1f30f764.exe
1432	4c6b59d26a2a995a788b021f1f30f764.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	4c6b59d26a2a995a788b021f1f30f764.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	4c6b59d26a2a995a788b021f1f30f764.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
1888	timeout.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
1820	taskkill.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1432	4c6b59d26a2a995a788b021f1f30f764.exe
1432	4c6b59d26a2a995a788b021f1f30f764.exe
1432	4c6b59d26a2a995a788b021f1f30f764.exe
1432	4c6b59d26a2a995a788b021f1f30f764.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1820	taskkill.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1432 wrote to memory of 564	1432	4c6b59d26a2a995a788b021f1f30f764.exe	29
PID 1432 wrote to memory of 564	1432	4c6b59d26a2a995a788b021f1f30f764.exe	29
PID 1432 wrote to memory of 564	1432	4c6b59d26a2a995a788b021f1f30f764.exe	29
PID 1432 wrote to memory of 564	1432	4c6b59d26a2a995a788b021f1f30f764.exe	29
PID 564 wrote to memory of 1820	564	cmd.exe	31
PID 564 wrote to memory of 1820	564	cmd.exe	31
PID 564 wrote to memory of 1820	564	cmd.exe	31
PID 564 wrote to memory of 1820	564	cmd.exe	31
PID 564 wrote to memory of 1888	564	cmd.exe	33
PID 564 wrote to memory of 1888	564	cmd.exe	33
PID 564 wrote to memory of 1888	564	cmd.exe	33
PID 564 wrote to memory of 1888	564	cmd.exe	33

C:\Users\Admin\AppData\Local\Temp\4c6b59d26a2a995a788b021f1f30f764.exe
"C:\Users\Admin\AppData\Local\Temp\4c6b59d26a2a995a788b021f1f30f764.exe"
1⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1432
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im 4c6b59d26a2a995a788b021f1f30f764.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\4c6b59d26a2a995a788b021f1f30f764.exe" & del C:\ProgramData\*.dll & exit
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:564
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im 4c6b59d26a2a995a788b021f1f30f764.exe /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1820
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 6
    3⤵
    - Delays execution with timeout.exe
    PID:1888

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/1432-54-0x00000000768C1000-0x00000000768C3000-memory.dmp

Filesize
8KB

Download
memory/1432-56-0x0000000000400000-0x000000000051E000-memory.dmp

Filesize
1.1MB

Download
memory/1432-55-0x0000000000520000-0x00000000005F4000-memory.dmp

Filesize
848KB

Download

Analysis

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