vidar | 02bee4e148a2a4a9b5371d5d7db5f0a376484315c3046ab69766e6f2dc5680e7

General

Target
af68cc85239182c714881ddc801ed904.exe
Size 669KB
Sample210930-e5dneagde2
SHA256 02bee4e148a2a4a9b5371d5d7db5f0a376484315c3046ab69766e6f2dc5680e7
MD5 af68cc85239182c714881ddc801ed904
SHA1 1beecdf1937e60c3f0caf94c12f8171dd3893f1c
SHA512 2e1e67e4d7f7d2a774218592a5c27e4000a0eb28124e57fee4e8b882ae7d0250b276d07a614b8a690b40d810f11577635d72e86471c0f65fb59a6c6ec3ea3f28
MD5 SHA1 SHA512

Score

10^/10

vidar discovery spyware stealer

Malware Config

Signatures

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

Vidar Stealer 2 IoCs

stealer

resource	yara_rule
behavioral1/memory/1960-61-0x00000000008E0000-0x00000000009B4000-memory.dmp	family_vidar
behavioral1/memory/1960-62-0x0000000000400000-0x00000000008D7000-memory.dmp	family_vidar

Downloads MZ/PE file

Deletes itself 1 IoCs

pid	Process
1532	cmd.exe

Loads dropped DLL 4 IoCs

pid	Process
1960	af68cc85239182c714881ddc801ed904.exe
1960	af68cc85239182c714881ddc801ed904.exe
1960	af68cc85239182c714881ddc801ed904.exe
1960	af68cc85239182c714881ddc801ed904.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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	af68cc85239182c714881ddc801ed904.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	af68cc85239182c714881ddc801ed904.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
1512	timeout.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
648	taskkill.exe

Modifies system certificate store 2 TTPs 2 IoCs

evasion spyware trojan

Install Root Certificate

T1130

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\DAC9024F54D8F6DF94935FB1732638CA6AD77C13	af68cc85239182c714881ddc801ed904.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\DAC9024F54D8F6DF94935FB1732638CA6AD77C13\Blob = 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	af68cc85239182c714881ddc801ed904.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1960	af68cc85239182c714881ddc801ed904.exe
1960	af68cc85239182c714881ddc801ed904.exe
1960	af68cc85239182c714881ddc801ed904.exe
1960	af68cc85239182c714881ddc801ed904.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	648	taskkill.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1960 wrote to memory of 1532	1960	af68cc85239182c714881ddc801ed904.exe	29
PID 1960 wrote to memory of 1532	1960	af68cc85239182c714881ddc801ed904.exe	29
PID 1960 wrote to memory of 1532	1960	af68cc85239182c714881ddc801ed904.exe	29
PID 1960 wrote to memory of 1532	1960	af68cc85239182c714881ddc801ed904.exe	29
PID 1532 wrote to memory of 648	1532	cmd.exe	31
PID 1532 wrote to memory of 648	1532	cmd.exe	31
PID 1532 wrote to memory of 648	1532	cmd.exe	31
PID 1532 wrote to memory of 648	1532	cmd.exe	31
PID 1532 wrote to memory of 1512	1532	cmd.exe	33
PID 1532 wrote to memory of 1512	1532	cmd.exe	33
PID 1532 wrote to memory of 1512	1532	cmd.exe	33
PID 1532 wrote to memory of 1512	1532	cmd.exe	33

C:\Users\Admin\AppData\Local\Temp\af68cc85239182c714881ddc801ed904.exe
"C:\Users\Admin\AppData\Local\Temp\af68cc85239182c714881ddc801ed904.exe"
1⤵
- Loads dropped DLL
- Checks processor information in registry
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1960
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im af68cc85239182c714881ddc801ed904.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\af68cc85239182c714881ddc801ed904.exe" & del C:\ProgramData\*.dll & exit
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:1532
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im af68cc85239182c714881ddc801ed904.exe /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:648
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 6
    3⤵
    - Delays execution with timeout.exe
    PID:1512