vidar | 0fe40289008f481b84b73f77c87efd5a737df057e19d9799a7c8e5b0b3a29539

General

Target
ad91056d751fd1a37689daaa789c2e19.exe
Size 599KB
Sample210801-eee2xqpsdx
SHA256 0fe40289008f481b84b73f77c87efd5a737df057e19d9799a7c8e5b0b3a29539
MD5 ad91056d751fd1a37689daaa789c2e19
SHA1 52b17f69cb9a921a678b8d7ed17e8a490c10a93a
SHA512 13aacf2969d4e4e8ee30b26fb6016cbbe72474719d2a44c30941c07bb2909ec23b4a860e994ceb7b782d4964dc38e341bd96a41a239fe5d24e5815baaf54f860
MD5 SHA1 SHA512

Score

10^/10

vidar 903 discovery spyware stealer suricata

Malware Config

Extracted

Family

vidar

Version

39.8

Botnet

903

C2

https://xeronxikxxx.tumblr.com/

Attributes

profile_id
903

Signatures

Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar
suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (Passwords.txt)
suricata
suricata: ET MALWARE Vidar/Arkei Stealer Client Data Upload
suricata
suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer Data Exfil
suricata

Vidar Stealer 3 IoCs

stealer

resource	yara_rule
behavioral1/memory/1704-63-0x0000000000400000-0x00000000004A1000-memory.dmp	family_vidar
behavioral1/memory/1704-64-0x000000000046B76D-mapping.dmp	family_vidar
behavioral1/memory/1704-67-0x0000000000400000-0x00000000004A1000-memory.dmp	family_vidar

Downloads MZ/PE file

Deletes itself 1 IoCs

pid	Process
948	cmd.exe

Loads dropped DLL 4 IoCs

pid	Process
1704	ad91056d751fd1a37689daaa789c2e19.exe
1704	ad91056d751fd1a37689daaa789c2e19.exe
1704	ad91056d751fd1a37689daaa789c2e19.exe
1704	ad91056d751fd1a37689daaa789c2e19.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 1920 set thread context of 1704	1920	ad91056d751fd1a37689daaa789c2e19.exe	29

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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	ad91056d751fd1a37689daaa789c2e19.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	ad91056d751fd1a37689daaa789c2e19.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
900	timeout.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
1064	taskkill.exe

Modifies system certificate store 2 TTPs 3 IoCs

evasion spyware trojan

Install Root Certificate

T1130

Modify Registry

T1112

description	ioc	Process
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349\Blob = 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	ad91056d751fd1a37689daaa789c2e19.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349\Blob = 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	ad91056d751fd1a37689daaa789c2e19.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349	ad91056d751fd1a37689daaa789c2e19.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1704	ad91056d751fd1a37689daaa789c2e19.exe
1704	ad91056d751fd1a37689daaa789c2e19.exe
1704	ad91056d751fd1a37689daaa789c2e19.exe
1704	ad91056d751fd1a37689daaa789c2e19.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1920	ad91056d751fd1a37689daaa789c2e19.exe
Token: SeDebugPrivilege	1064	taskkill.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 1920 wrote to memory of 1704	1920	ad91056d751fd1a37689daaa789c2e19.exe	29
PID 1920 wrote to memory of 1704	1920	ad91056d751fd1a37689daaa789c2e19.exe	29
PID 1920 wrote to memory of 1704	1920	ad91056d751fd1a37689daaa789c2e19.exe	29
PID 1920 wrote to memory of 1704	1920	ad91056d751fd1a37689daaa789c2e19.exe	29
PID 1920 wrote to memory of 1704	1920	ad91056d751fd1a37689daaa789c2e19.exe	29
PID 1920 wrote to memory of 1704	1920	ad91056d751fd1a37689daaa789c2e19.exe	29
PID 1920 wrote to memory of 1704	1920	ad91056d751fd1a37689daaa789c2e19.exe	29
PID 1920 wrote to memory of 1704	1920	ad91056d751fd1a37689daaa789c2e19.exe	29
PID 1920 wrote to memory of 1704	1920	ad91056d751fd1a37689daaa789c2e19.exe	29
PID 1704 wrote to memory of 948	1704	ad91056d751fd1a37689daaa789c2e19.exe	32
PID 1704 wrote to memory of 948	1704	ad91056d751fd1a37689daaa789c2e19.exe	32
PID 1704 wrote to memory of 948	1704	ad91056d751fd1a37689daaa789c2e19.exe	32
PID 1704 wrote to memory of 948	1704	ad91056d751fd1a37689daaa789c2e19.exe	32
PID 948 wrote to memory of 1064	948	cmd.exe	34
PID 948 wrote to memory of 1064	948	cmd.exe	34
PID 948 wrote to memory of 1064	948	cmd.exe	34
PID 948 wrote to memory of 1064	948	cmd.exe	34
PID 948 wrote to memory of 900	948	cmd.exe	36
PID 948 wrote to memory of 900	948	cmd.exe	36
PID 948 wrote to memory of 900	948	cmd.exe	36
PID 948 wrote to memory of 900	948	cmd.exe	36

C:\Users\Admin\AppData\Local\Temp\ad91056d751fd1a37689daaa789c2e19.exe
"C:\Users\Admin\AppData\Local\Temp\ad91056d751fd1a37689daaa789c2e19.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1920
- C:\Users\Admin\AppData\Local\Temp\ad91056d751fd1a37689daaa789c2e19.exe
  C:\Users\Admin\AppData\Local\Temp\ad91056d751fd1a37689daaa789c2e19.exe
  2⤵
  - Loads dropped DLL
  - Checks processor information in registry
  - Modifies system certificate store
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1704
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c taskkill /im ad91056d751fd1a37689daaa789c2e19.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\ad91056d751fd1a37689daaa789c2e19.exe" & del C:\ProgramData\*.dll & exit
    3⤵
    - Deletes itself
    - Suspicious use of WriteProcessMemory
    PID:948
  - - C:\Windows\SysWOW64\taskkill.exe
      taskkill /im ad91056d751fd1a37689daaa789c2e19.exe /f
      4⤵
      Kills process with taskkill
      Suspicious use of AdjustPrivilegeToken
      PID:1064
  - - C:\Windows\SysWOW64\timeout.exe
      timeout /t 6
      4⤵
      Delays execution with timeout.exe
      PID:900