vidar | 521294dfc8a64a5e31a33afab50041dab893d8b7837bb043e54bf2a9febf19c9

General

Target
48a6907a27e4bd3a8d104ead6d5c41cb.exe
Size 2.2MB
Sample210621-3cylfdk4jx
SHA256 521294dfc8a64a5e31a33afab50041dab893d8b7837bb043e54bf2a9febf19c9
MD5 48a6907a27e4bd3a8d104ead6d5c41cb
SHA1 b5a47d1b3bc0cac2a170299acb15c4756ff4088b
SHA512 d110aec24965bc81db79fdee56ee4fe17282ff92ec461f28bf6206ab79f6eeb889f1f7be6cfd608a2a5fa7ca974f35a389930482d4e9cc2d93972045b8fd0818
MD5 SHA1 SHA512

Score

10^/10

vidar 921 discovery spyware stealer

Malware Config

Extracted

Family

vidar

Version

39.4

Botnet

921

C2

https://sergeevih43.tumblr.com

Attributes

profile_id
921

Signatures

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

Vidar Stealer 3 IoCs

stealer

resource	yara_rule
behavioral2/memory/2836-117-0x0000000000400000-0x00000000004A1000-memory.dmp	family_vidar
behavioral2/memory/2836-118-0x000000000046B76D-mapping.dmp	family_vidar
behavioral2/memory/2836-119-0x0000000000400000-0x00000000004A1000-memory.dmp	family_vidar

Downloads MZ/PE file

Loads dropped DLL 2 IoCs

pid	Process
2836	48a6907a27e4bd3a8d104ead6d5c41cb.exe
2836	48a6907a27e4bd3a8d104ead6d5c41cb.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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3008 set thread context of 2836	3008	48a6907a27e4bd3a8d104ead6d5c41cb.exe	74

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	48a6907a27e4bd3a8d104ead6d5c41cb.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	48a6907a27e4bd3a8d104ead6d5c41cb.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
3516	timeout.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
2028	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	48a6907a27e4bd3a8d104ead6d5c41cb.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349\Blob = 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	48a6907a27e4bd3a8d104ead6d5c41cb.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
2836	48a6907a27e4bd3a8d104ead6d5c41cb.exe
2836	48a6907a27e4bd3a8d104ead6d5c41cb.exe
2836	48a6907a27e4bd3a8d104ead6d5c41cb.exe
2836	48a6907a27e4bd3a8d104ead6d5c41cb.exe
2836	48a6907a27e4bd3a8d104ead6d5c41cb.exe
2836	48a6907a27e4bd3a8d104ead6d5c41cb.exe
2836	48a6907a27e4bd3a8d104ead6d5c41cb.exe
2836	48a6907a27e4bd3a8d104ead6d5c41cb.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3008	48a6907a27e4bd3a8d104ead6d5c41cb.exe
Token: SeDebugPrivilege	2028	taskkill.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 3008 wrote to memory of 2836	3008	48a6907a27e4bd3a8d104ead6d5c41cb.exe	74
PID 3008 wrote to memory of 2836	3008	48a6907a27e4bd3a8d104ead6d5c41cb.exe	74
PID 3008 wrote to memory of 2836	3008	48a6907a27e4bd3a8d104ead6d5c41cb.exe	74
PID 3008 wrote to memory of 2836	3008	48a6907a27e4bd3a8d104ead6d5c41cb.exe	74
PID 3008 wrote to memory of 2836	3008	48a6907a27e4bd3a8d104ead6d5c41cb.exe	74
PID 3008 wrote to memory of 2836	3008	48a6907a27e4bd3a8d104ead6d5c41cb.exe	74
PID 3008 wrote to memory of 2836	3008	48a6907a27e4bd3a8d104ead6d5c41cb.exe	74
PID 3008 wrote to memory of 2836	3008	48a6907a27e4bd3a8d104ead6d5c41cb.exe	74
PID 2836 wrote to memory of 2388	2836	48a6907a27e4bd3a8d104ead6d5c41cb.exe	80
PID 2836 wrote to memory of 2388	2836	48a6907a27e4bd3a8d104ead6d5c41cb.exe	80
PID 2836 wrote to memory of 2388	2836	48a6907a27e4bd3a8d104ead6d5c41cb.exe	80
PID 2388 wrote to memory of 2028	2388	cmd.exe	82
PID 2388 wrote to memory of 2028	2388	cmd.exe	82
PID 2388 wrote to memory of 2028	2388	cmd.exe	82
PID 2388 wrote to memory of 3516	2388	cmd.exe	84
PID 2388 wrote to memory of 3516	2388	cmd.exe	84
PID 2388 wrote to memory of 3516	2388	cmd.exe	84

C:\Users\Admin\AppData\Local\Temp\48a6907a27e4bd3a8d104ead6d5c41cb.exe
"C:\Users\Admin\AppData\Local\Temp\48a6907a27e4bd3a8d104ead6d5c41cb.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3008
- C:\Users\Admin\AppData\Local\Temp\48a6907a27e4bd3a8d104ead6d5c41cb.exe
  C:\Users\Admin\AppData\Local\Temp\48a6907a27e4bd3a8d104ead6d5c41cb.exe
  2⤵
  - Loads dropped DLL
  - Checks processor information in registry
  - Modifies system certificate store
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2836
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c taskkill /im 48a6907a27e4bd3a8d104ead6d5c41cb.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\48a6907a27e4bd3a8d104ead6d5c41cb.exe" & del C:\ProgramData\*.dll & exit
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2388
  - - C:\Windows\SysWOW64\taskkill.exe
      taskkill /im 48a6907a27e4bd3a8d104ead6d5c41cb.exe /f
      4⤵
      Kills process with taskkill
      Suspicious use of AdjustPrivilegeToken
      PID:2028
  - - C:\Windows\SysWOW64\timeout.exe
      timeout /t 6
      4⤵
      Delays execution with timeout.exe
      PID:3516