vidar | f90939a50612f3e71e75c355d16b3f2fc41e126900d4db8a33a9db58336b65b8

General

Target
d2385510f0bc2621a04bbcc6bda24edc.exe
Size 584KB
Sample210809-jeccwsz8dn
SHA256 f90939a50612f3e71e75c355d16b3f2fc41e126900d4db8a33a9db58336b65b8
MD5 d2385510f0bc2621a04bbcc6bda24edc
SHA1 a3d2132e57b9c03e6fabf98a78f1218d1db9401f
SHA512 d973834c678ec4a4bfcce1d8c5769b2cfaef3f0e55769f9d72aa0fcdc3c045da0426c495b4a2c5c61f0449e853881c1084848f5fae3dcca9e98a7df9a6cb1414
MD5 SHA1 SHA512

Score

10^/10

vidar 828 discovery spyware stealer suricata

Malware Config

Extracted

Family

vidar

Version

40

Botnet

828

C2

https://lenak513.tumblr.com/

Attributes

profile_id
828

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: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (Passwords.txt)
suricata
suricata: ET MALWARE Vidar/Arkei Stealer Client Data Upload
suricata: ET MALWARE Vidar/Arkei Stealer Client Data Upload
suricata

Vidar Stealer 2 IoCs

stealer

resource	yara_rule
behavioral2/memory/740-114-0x0000000004A10000-0x0000000004AAD000-memory.dmp	family_vidar
behavioral2/memory/740-115-0x0000000000400000-0x0000000002CC8000-memory.dmp	family_vidar

Downloads MZ/PE file

Loads dropped DLL 2 IoCs

pid	Process
740	d2385510f0bc2621a04bbcc6bda24edc.exe
740	d2385510f0bc2621a04bbcc6bda24edc.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	d2385510f0bc2621a04bbcc6bda24edc.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	d2385510f0bc2621a04bbcc6bda24edc.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
3964	timeout.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
2256	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	d2385510f0bc2621a04bbcc6bda24edc.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349\Blob = 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	d2385510f0bc2621a04bbcc6bda24edc.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
740	d2385510f0bc2621a04bbcc6bda24edc.exe
740	d2385510f0bc2621a04bbcc6bda24edc.exe
740	d2385510f0bc2621a04bbcc6bda24edc.exe
740	d2385510f0bc2621a04bbcc6bda24edc.exe
740	d2385510f0bc2621a04bbcc6bda24edc.exe
740	d2385510f0bc2621a04bbcc6bda24edc.exe
740	d2385510f0bc2621a04bbcc6bda24edc.exe
740	d2385510f0bc2621a04bbcc6bda24edc.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2256	taskkill.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 740 wrote to memory of 3908	740	d2385510f0bc2621a04bbcc6bda24edc.exe	78
PID 740 wrote to memory of 3908	740	d2385510f0bc2621a04bbcc6bda24edc.exe	78
PID 740 wrote to memory of 3908	740	d2385510f0bc2621a04bbcc6bda24edc.exe	78
PID 3908 wrote to memory of 2256	3908	cmd.exe	80
PID 3908 wrote to memory of 2256	3908	cmd.exe	80
PID 3908 wrote to memory of 2256	3908	cmd.exe	80
PID 3908 wrote to memory of 3964	3908	cmd.exe	82
PID 3908 wrote to memory of 3964	3908	cmd.exe	82
PID 3908 wrote to memory of 3964	3908	cmd.exe	82

C:\Users\Admin\AppData\Local\Temp\d2385510f0bc2621a04bbcc6bda24edc.exe
"C:\Users\Admin\AppData\Local\Temp\d2385510f0bc2621a04bbcc6bda24edc.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 d2385510f0bc2621a04bbcc6bda24edc.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\d2385510f0bc2621a04bbcc6bda24edc.exe" & del C:\ProgramData\*.dll & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3908
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im d2385510f0bc2621a04bbcc6bda24edc.exe /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:2256
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 6
    3⤵
    - Delays execution with timeout.exe
    PID:3964