vidar | 8be9cec521fca3b82e924f94f7d13b253a9259c0ead8cabc4a71cd26d2ca8b7b

General

Target
e95903faa7fa411b824570e6fdbf8b83.exe
Size 656KB
Sample210622-fsjqs85lfa
SHA256 8be9cec521fca3b82e924f94f7d13b253a9259c0ead8cabc4a71cd26d2ca8b7b
MD5 e95903faa7fa411b824570e6fdbf8b83
SHA1 ce143431da41dacf23547b7fad77b43f04e80d56
SHA512 a60e8557ad12d57d29dfa6977a738688201baa32e727b1422c164de7c28de65d39bbff729773859cdde6ad1274ec37ce5b3b081c7421ec46d2724cc3a9d68853
MD5 SHA1 SHA512

Score

10^/10

vidar 865 discovery spyware stealer

Malware Config

Extracted

Family

vidar

Version

39.4

Botnet

865

C2

https://sergeevih43.tumblr.com

Attributes

profile_id
865

Signatures

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

Vidar Stealer 2 IoCs

stealer

resource	yara_rule
behavioral2/memory/784-115-0x0000000000400000-0x00000000004BA000-memory.dmp	family_vidar
behavioral2/memory/784-114-0x0000000002110000-0x00000000021AD000-memory.dmp	family_vidar

Downloads MZ/PE file

Loads dropped DLL 2 IoCs

pid	Process
784	e95903faa7fa411b824570e6fdbf8b83.exe
784	e95903faa7fa411b824570e6fdbf8b83.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	e95903faa7fa411b824570e6fdbf8b83.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	e95903faa7fa411b824570e6fdbf8b83.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2556	timeout.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
3988	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	e95903faa7fa411b824570e6fdbf8b83.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349\Blob = 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	e95903faa7fa411b824570e6fdbf8b83.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
784	e95903faa7fa411b824570e6fdbf8b83.exe
784	e95903faa7fa411b824570e6fdbf8b83.exe
784	e95903faa7fa411b824570e6fdbf8b83.exe
784	e95903faa7fa411b824570e6fdbf8b83.exe
784	e95903faa7fa411b824570e6fdbf8b83.exe
784	e95903faa7fa411b824570e6fdbf8b83.exe
784	e95903faa7fa411b824570e6fdbf8b83.exe
784	e95903faa7fa411b824570e6fdbf8b83.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3988	taskkill.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 784 wrote to memory of 1368	784	e95903faa7fa411b824570e6fdbf8b83.exe	78
PID 784 wrote to memory of 1368	784	e95903faa7fa411b824570e6fdbf8b83.exe	78
PID 784 wrote to memory of 1368	784	e95903faa7fa411b824570e6fdbf8b83.exe	78
PID 1368 wrote to memory of 3988	1368	cmd.exe	80
PID 1368 wrote to memory of 3988	1368	cmd.exe	80
PID 1368 wrote to memory of 3988	1368	cmd.exe	80
PID 1368 wrote to memory of 2556	1368	cmd.exe	82
PID 1368 wrote to memory of 2556	1368	cmd.exe	82
PID 1368 wrote to memory of 2556	1368	cmd.exe	82

C:\Users\Admin\AppData\Local\Temp\e95903faa7fa411b824570e6fdbf8b83.exe
"C:\Users\Admin\AppData\Local\Temp\e95903faa7fa411b824570e6fdbf8b83.exe"
1⤵
- Loads dropped DLL
- Checks processor information in registry
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:784
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im e95903faa7fa411b824570e6fdbf8b83.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\e95903faa7fa411b824570e6fdbf8b83.exe" & del C:\ProgramData\*.dll & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1368
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im e95903faa7fa411b824570e6fdbf8b83.exe /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:3988
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 6
    3⤵
    - Delays execution with timeout.exe
    PID:2556