vidar | 4138442b73cdafa8f00d78734836ef77dffe605631277f562c9ae06f1d8d7b3c

General

Target
d46a2d526787dabdcc7fd45627181176.exe
Size 671KB
Sample210907-c5a66sbfc7
SHA256 4138442b73cdafa8f00d78734836ef77dffe605631277f562c9ae06f1d8d7b3c
MD5 d46a2d526787dabdcc7fd45627181176
SHA1 8bdb30199a0c0bd803b373fddc937556c024a6cf
SHA512 3acbca3a981017778da2d95f7c818e819dc747e6310ff0215f55ac29be41a2270292962177c3e5807bc959e7f8cb8b5e91e44f5b82b9759e4f42c3ee29a00a4b
MD5 SHA1 SHA512

Score

10^/10

vidar 828 discovery spyware stealer

Malware Config

Extracted

Family

vidar

Version

40.5

Botnet

828

C2

https://gheorghip.tumblr.com/

Attributes

profile_id
828

Signatures

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

Vidar Stealer 2 IoCs

stealer

resource	yara_rule
behavioral2/memory/3492-114-0x00000000047E0000-0x00000000048B1000-memory.dmp	family_vidar
behavioral2/memory/3492-115-0x0000000000400000-0x0000000002BB2000-memory.dmp	family_vidar

Downloads MZ/PE file

Loads dropped DLL 2 IoCs

pid	Process
3492	d46a2d526787dabdcc7fd45627181176.exe
3492	d46a2d526787dabdcc7fd45627181176.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	d46a2d526787dabdcc7fd45627181176.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	d46a2d526787dabdcc7fd45627181176.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
3904	timeout.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
1896	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	d46a2d526787dabdcc7fd45627181176.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349\Blob = 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	d46a2d526787dabdcc7fd45627181176.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
3492	d46a2d526787dabdcc7fd45627181176.exe
3492	d46a2d526787dabdcc7fd45627181176.exe
3492	d46a2d526787dabdcc7fd45627181176.exe
3492	d46a2d526787dabdcc7fd45627181176.exe
3492	d46a2d526787dabdcc7fd45627181176.exe
3492	d46a2d526787dabdcc7fd45627181176.exe
3492	d46a2d526787dabdcc7fd45627181176.exe
3492	d46a2d526787dabdcc7fd45627181176.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1896	taskkill.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3492 wrote to memory of 2288	3492	d46a2d526787dabdcc7fd45627181176.exe	78
PID 3492 wrote to memory of 2288	3492	d46a2d526787dabdcc7fd45627181176.exe	78
PID 3492 wrote to memory of 2288	3492	d46a2d526787dabdcc7fd45627181176.exe	78
PID 2288 wrote to memory of 1896	2288	cmd.exe	80
PID 2288 wrote to memory of 1896	2288	cmd.exe	80
PID 2288 wrote to memory of 1896	2288	cmd.exe	80
PID 2288 wrote to memory of 3904	2288	cmd.exe	82
PID 2288 wrote to memory of 3904	2288	cmd.exe	82
PID 2288 wrote to memory of 3904	2288	cmd.exe	82

C:\Users\Admin\AppData\Local\Temp\d46a2d526787dabdcc7fd45627181176.exe
"C:\Users\Admin\AppData\Local\Temp\d46a2d526787dabdcc7fd45627181176.exe"
1⤵
- Loads dropped DLL
- Checks processor information in registry
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3492
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im d46a2d526787dabdcc7fd45627181176.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\d46a2d526787dabdcc7fd45627181176.exe" & del C:\ProgramData\*.dll & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2288
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im d46a2d526787dabdcc7fd45627181176.exe /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1896
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 6
    3⤵
    - Delays execution with timeout.exe
    PID:3904