vidar | f1e6ef95e8fb839899a496e6ce304bca0be925f2473d0f9ecf250ee6ba330233

General

Target
f8e49d0fae7bc7bffcecff73a2ae54a0.exe
Size 702KB
Sample210629-wf495s1ece
SHA256 f1e6ef95e8fb839899a496e6ce304bca0be925f2473d0f9ecf250ee6ba330233
MD5 f8e49d0fae7bc7bffcecff73a2ae54a0
SHA1 0c89a32d5894856fae08630d83becfa296fb50e2
SHA512 63db71baec3bda7329fb1ef20bed5c25026abddab271f33c2edfa0602eac4df3078bf7b82257545d4940e4429db829a273e6859b4cc37079e158c7448b6ea7fb
MD5 SHA1 SHA512

Score

10^/10

vidar 865 discovery spyware stealer

Malware Config

Extracted

Family

vidar

Version

39.4

Botnet

865

C2

https://sergeevih43.tumblr.com

Attributes

profile_id
865

Signatures

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

Vidar Stealer 2 IoCs

stealer

resource	yara_rule
behavioral2/memory/740-114-0x0000000002290000-0x000000000232D000-memory.dmp	family_vidar
behavioral2/memory/740-115-0x0000000000400000-0x000000000052D000-memory.dmp	family_vidar

Downloads MZ/PE file

Loads dropped DLL 2 IoCs

pid	Process
740	f8e49d0fae7bc7bffcecff73a2ae54a0.exe
740	f8e49d0fae7bc7bffcecff73a2ae54a0.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	f8e49d0fae7bc7bffcecff73a2ae54a0.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	f8e49d0fae7bc7bffcecff73a2ae54a0.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2508	timeout.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
3140	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	f8e49d0fae7bc7bffcecff73a2ae54a0.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349\Blob = 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	f8e49d0fae7bc7bffcecff73a2ae54a0.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
740	f8e49d0fae7bc7bffcecff73a2ae54a0.exe
740	f8e49d0fae7bc7bffcecff73a2ae54a0.exe
740	f8e49d0fae7bc7bffcecff73a2ae54a0.exe
740	f8e49d0fae7bc7bffcecff73a2ae54a0.exe
740	f8e49d0fae7bc7bffcecff73a2ae54a0.exe
740	f8e49d0fae7bc7bffcecff73a2ae54a0.exe
740	f8e49d0fae7bc7bffcecff73a2ae54a0.exe
740	f8e49d0fae7bc7bffcecff73a2ae54a0.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3140	taskkill.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 740 wrote to memory of 2820	740	f8e49d0fae7bc7bffcecff73a2ae54a0.exe	78
PID 740 wrote to memory of 2820	740	f8e49d0fae7bc7bffcecff73a2ae54a0.exe	78
PID 740 wrote to memory of 2820	740	f8e49d0fae7bc7bffcecff73a2ae54a0.exe	78
PID 2820 wrote to memory of 3140	2820	cmd.exe	80
PID 2820 wrote to memory of 3140	2820	cmd.exe	80
PID 2820 wrote to memory of 3140	2820	cmd.exe	80
PID 2820 wrote to memory of 2508	2820	cmd.exe	82
PID 2820 wrote to memory of 2508	2820	cmd.exe	82
PID 2820 wrote to memory of 2508	2820	cmd.exe	82

C:\Users\Admin\AppData\Local\Temp\f8e49d0fae7bc7bffcecff73a2ae54a0.exe
"C:\Users\Admin\AppData\Local\Temp\f8e49d0fae7bc7bffcecff73a2ae54a0.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 f8e49d0fae7bc7bffcecff73a2ae54a0.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\f8e49d0fae7bc7bffcecff73a2ae54a0.exe" & del C:\ProgramData\*.dll & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2820
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im f8e49d0fae7bc7bffcecff73a2ae54a0.exe /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:3140
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 6
    3⤵
    - Delays execution with timeout.exe
    PID:2508