vidar | e91557046e000b4f2947659394d496971e507002f721bdc65a03b9637900bbe9

General

Target
11acbef70919d00cc0d72cf5a2419915.exe
Size 740KB
Sample210909-te3beagdf8
SHA256 e91557046e000b4f2947659394d496971e507002f721bdc65a03b9637900bbe9
MD5 11acbef70919d00cc0d72cf5a2419915
SHA1 3b0ae424a1fdf3a2e193a8f4561e211670646de7
SHA512 30db51b5d1c9874addf870e30a02aa9eb919e5bd995c301906a1bbfa66a30f45762fa88a5e7aa354f25ef3dbb5192d141c582f0467582716a8ca02479c35b291
MD5 SHA1 SHA512

Score

10^/10

vidar 916 discovery spyware stealer

Malware Config

Extracted

Family

vidar

Version

40.5

Botnet

916

C2

https://gheorghip.tumblr.com/

Attributes

profile_id
916

Signatures

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

Vidar Stealer 2 IoCs

stealer

resource	yara_rule
behavioral2/memory/740-114-0x0000000004900000-0x00000000049D1000-memory.dmp	family_vidar
behavioral2/memory/740-115-0x0000000000400000-0x0000000002BC4000-memory.dmp	family_vidar

Downloads MZ/PE file

Loads dropped DLL 2 IoCs

pid	Process
740	11acbef70919d00cc0d72cf5a2419915.exe
740	11acbef70919d00cc0d72cf5a2419915.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	11acbef70919d00cc0d72cf5a2419915.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	11acbef70919d00cc0d72cf5a2419915.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
3844	timeout.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
2232	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\D1EB23A46D17D68FD92564C2F1F1601764D8E349	11acbef70919d00cc0d72cf5a2419915.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349\Blob = 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	11acbef70919d00cc0d72cf5a2419915.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
740	11acbef70919d00cc0d72cf5a2419915.exe
740	11acbef70919d00cc0d72cf5a2419915.exe
740	11acbef70919d00cc0d72cf5a2419915.exe
740	11acbef70919d00cc0d72cf5a2419915.exe
740	11acbef70919d00cc0d72cf5a2419915.exe
740	11acbef70919d00cc0d72cf5a2419915.exe
740	11acbef70919d00cc0d72cf5a2419915.exe
740	11acbef70919d00cc0d72cf5a2419915.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2232	taskkill.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 740 wrote to memory of 2820	740	11acbef70919d00cc0d72cf5a2419915.exe	78
PID 740 wrote to memory of 2820	740	11acbef70919d00cc0d72cf5a2419915.exe	78
PID 740 wrote to memory of 2820	740	11acbef70919d00cc0d72cf5a2419915.exe	78
PID 2820 wrote to memory of 2232	2820	cmd.exe	80
PID 2820 wrote to memory of 2232	2820	cmd.exe	80
PID 2820 wrote to memory of 2232	2820	cmd.exe	80
PID 2820 wrote to memory of 3844	2820	cmd.exe	82
PID 2820 wrote to memory of 3844	2820	cmd.exe	82
PID 2820 wrote to memory of 3844	2820	cmd.exe	82

C:\Users\Admin\AppData\Local\Temp\11acbef70919d00cc0d72cf5a2419915.exe
"C:\Users\Admin\AppData\Local\Temp\11acbef70919d00cc0d72cf5a2419915.exe"
1⤵
- Loads dropped DLL
- Checks processor information in registry
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:740
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im 11acbef70919d00cc0d72cf5a2419915.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\11acbef70919d00cc0d72cf5a2419915.exe" & del C:\ProgramData\*.dll & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2820
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im 11acbef70919d00cc0d72cf5a2419915.exe /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:2232
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 6
    3⤵
    - Delays execution with timeout.exe
    PID:3844