vidar | 201b9ae09934efbe33dd9ac919d1a6600cdf336bf60ea50c8d2078caed49dfe3

General

Target
3ccf44c470e00c5f42ca53044a0609ab.exe
Size 739KB
Sample210911-y2pfaabga4
SHA256 201b9ae09934efbe33dd9ac919d1a6600cdf336bf60ea50c8d2078caed49dfe3
MD5 3ccf44c470e00c5f42ca53044a0609ab
SHA1 66f43a87c7166f1c7a82460543847fc50b195313
SHA512 0ab7e80263f96329351bb45b23351e77f38ca6588bc62102f782c788d7908789a7cc6e2778b722afecd15dcdbce16adc4dd534dfcbfa43fb2a4c9a5c3aeab6d8
MD5 SHA1 SHA512

Score

10^/10

vidar 824 discovery spyware stealer

Malware Config

Extracted

Family

vidar

Version

40.5

Botnet

824

C2

https://gheorghip.tumblr.com/

Attributes

profile_id
824

Signatures

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

Vidar Stealer 2 IoCs

stealer

resource	yara_rule
behavioral2/memory/1832-114-0x0000000004970000-0x0000000004A41000-memory.dmp	family_vidar
behavioral2/memory/1832-115-0x0000000000400000-0x0000000002BC5000-memory.dmp	family_vidar

Downloads MZ/PE file

Loads dropped DLL 2 IoCs

pid	Process
1832	3ccf44c470e00c5f42ca53044a0609ab.exe
1832	3ccf44c470e00c5f42ca53044a0609ab.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	3ccf44c470e00c5f42ca53044a0609ab.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	3ccf44c470e00c5f42ca53044a0609ab.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
1496	timeout.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
688	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	3ccf44c470e00c5f42ca53044a0609ab.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349\Blob = 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	3ccf44c470e00c5f42ca53044a0609ab.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
1832	3ccf44c470e00c5f42ca53044a0609ab.exe
1832	3ccf44c470e00c5f42ca53044a0609ab.exe
1832	3ccf44c470e00c5f42ca53044a0609ab.exe
1832	3ccf44c470e00c5f42ca53044a0609ab.exe
1832	3ccf44c470e00c5f42ca53044a0609ab.exe
1832	3ccf44c470e00c5f42ca53044a0609ab.exe
1832	3ccf44c470e00c5f42ca53044a0609ab.exe
1832	3ccf44c470e00c5f42ca53044a0609ab.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	688	taskkill.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1832 wrote to memory of 3576	1832	3ccf44c470e00c5f42ca53044a0609ab.exe	68
PID 1832 wrote to memory of 3576	1832	3ccf44c470e00c5f42ca53044a0609ab.exe	68
PID 1832 wrote to memory of 3576	1832	3ccf44c470e00c5f42ca53044a0609ab.exe	68
PID 3576 wrote to memory of 688	3576	cmd.exe	70
PID 3576 wrote to memory of 688	3576	cmd.exe	70
PID 3576 wrote to memory of 688	3576	cmd.exe	70
PID 3576 wrote to memory of 1496	3576	cmd.exe	72
PID 3576 wrote to memory of 1496	3576	cmd.exe	72
PID 3576 wrote to memory of 1496	3576	cmd.exe	72

C:\Users\Admin\AppData\Local\Temp\3ccf44c470e00c5f42ca53044a0609ab.exe
"C:\Users\Admin\AppData\Local\Temp\3ccf44c470e00c5f42ca53044a0609ab.exe"
1⤵
- Loads dropped DLL
- Checks processor information in registry
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1832
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im 3ccf44c470e00c5f42ca53044a0609ab.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\3ccf44c470e00c5f42ca53044a0609ab.exe" & del C:\ProgramData\*.dll & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3576
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im 3ccf44c470e00c5f42ca53044a0609ab.exe /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:688
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 6
    3⤵
    - Delays execution with timeout.exe
    PID:1496