vidar | d2d538e6714eda2fb624118d30db46c384988d16c56bbc2d51482091e5c0aa0f

General

Target
c211032bcf021e63c09f280334ac6715.exe
Size 661KB
Sample210922-g53nmsbgc2
SHA256 d2d538e6714eda2fb624118d30db46c384988d16c56bbc2d51482091e5c0aa0f
MD5 c211032bcf021e63c09f280334ac6715
SHA1 c2daaecb60d3d869a5537870dc76a877cff6b6c5
SHA512 0fb876c422ebf69d498937d094f40f5dd9b7835fe7497bdc5a3258e3ec417d137fb33874ac52615e0d29e3cb43432c786915c9332aae27c263dff8e6f186b3f3
MD5 SHA1 SHA512

Score

10^/10

vidar 828 discovery spyware stealer

Malware Config

Extracted

Family

vidar

Version

40.9

Botnet

828

C2

https://stacenko668.tumblr.com/

Attributes

profile_id
828

Signatures

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

Vidar Stealer 2 IoCs

stealer

resource	yara_rule
behavioral2/memory/4088-116-0x0000000000400000-0x000000000052B000-memory.dmp	family_vidar
behavioral2/memory/4088-115-0x00000000022B0000-0x0000000002384000-memory.dmp	family_vidar

Downloads MZ/PE file

Loads dropped DLL 2 IoCs

pid	Process
4088	c211032bcf021e63c09f280334ac6715.exe
4088	c211032bcf021e63c09f280334ac6715.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	c211032bcf021e63c09f280334ac6715.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	c211032bcf021e63c09f280334ac6715.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
3928	timeout.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
3564	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	c211032bcf021e63c09f280334ac6715.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349\Blob = 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	c211032bcf021e63c09f280334ac6715.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
4088	c211032bcf021e63c09f280334ac6715.exe
4088	c211032bcf021e63c09f280334ac6715.exe
4088	c211032bcf021e63c09f280334ac6715.exe
4088	c211032bcf021e63c09f280334ac6715.exe
4088	c211032bcf021e63c09f280334ac6715.exe
4088	c211032bcf021e63c09f280334ac6715.exe
4088	c211032bcf021e63c09f280334ac6715.exe
4088	c211032bcf021e63c09f280334ac6715.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3564	taskkill.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4088 wrote to memory of 3556	4088	c211032bcf021e63c09f280334ac6715.exe	70
PID 4088 wrote to memory of 3556	4088	c211032bcf021e63c09f280334ac6715.exe	70
PID 4088 wrote to memory of 3556	4088	c211032bcf021e63c09f280334ac6715.exe	70
PID 3556 wrote to memory of 3564	3556	cmd.exe	72
PID 3556 wrote to memory of 3564	3556	cmd.exe	72
PID 3556 wrote to memory of 3564	3556	cmd.exe	72
PID 3556 wrote to memory of 3928	3556	cmd.exe	74
PID 3556 wrote to memory of 3928	3556	cmd.exe	74
PID 3556 wrote to memory of 3928	3556	cmd.exe	74

C:\Users\Admin\AppData\Local\Temp\c211032bcf021e63c09f280334ac6715.exe
"C:\Users\Admin\AppData\Local\Temp\c211032bcf021e63c09f280334ac6715.exe"
1⤵
- Loads dropped DLL
- Checks processor information in registry
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4088
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im c211032bcf021e63c09f280334ac6715.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\c211032bcf021e63c09f280334ac6715.exe" & del C:\ProgramData\*.dll & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3556
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im c211032bcf021e63c09f280334ac6715.exe /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:3564
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 6
    3⤵
    - Delays execution with timeout.exe
    PID:3928