vidar | 1ded793046759d0c4848c5cd03ebc7f4200a113fd09a73453809edf19064a05c

General

Target
82de6228af53e0bcd76c186c6899933e.exe
Size 637KB
Sample210929-dshadsddd9
SHA256 1ded793046759d0c4848c5cd03ebc7f4200a113fd09a73453809edf19064a05c
MD5 82de6228af53e0bcd76c186c6899933e
SHA1 b302a151e58e65ecc578563612601ccf63c1fc7d
SHA512 6cea02eb9b2139728cfa1099740956f68429e2b47832e46d330c3c9ae2b04cbcacecd4003734f5e66d181da9f4b9f6711dbb7be313cae80c1e07b050f374096c
MD5 SHA1 SHA512

Score

10^/10

vidar discovery spyware stealer

Malware Config

Signatures

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

Vidar Stealer 2 IoCs

stealer

resource	yara_rule
behavioral1/memory/2044-60-0x0000000001D20000-0x0000000001DF4000-memory.dmp	family_vidar
behavioral1/memory/2044-61-0x0000000000400000-0x00000000004D7000-memory.dmp	family_vidar

Downloads MZ/PE file

Deletes itself 1 IoCs

pid	Process
1328	cmd.exe

Loads dropped DLL 4 IoCs

pid	Process
2044	82de6228af53e0bcd76c186c6899933e.exe
2044	82de6228af53e0bcd76c186c6899933e.exe
2044	82de6228af53e0bcd76c186c6899933e.exe
2044	82de6228af53e0bcd76c186c6899933e.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	82de6228af53e0bcd76c186c6899933e.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	82de6228af53e0bcd76c186c6899933e.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
1016	timeout.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
1344	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\DAC9024F54D8F6DF94935FB1732638CA6AD77C13	82de6228af53e0bcd76c186c6899933e.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\DAC9024F54D8F6DF94935FB1732638CA6AD77C13\Blob = 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	82de6228af53e0bcd76c186c6899933e.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2044	82de6228af53e0bcd76c186c6899933e.exe
2044	82de6228af53e0bcd76c186c6899933e.exe
2044	82de6228af53e0bcd76c186c6899933e.exe
2044	82de6228af53e0bcd76c186c6899933e.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1344	taskkill.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2044 wrote to memory of 1328	2044	82de6228af53e0bcd76c186c6899933e.exe	29
PID 2044 wrote to memory of 1328	2044	82de6228af53e0bcd76c186c6899933e.exe	29
PID 2044 wrote to memory of 1328	2044	82de6228af53e0bcd76c186c6899933e.exe	29
PID 2044 wrote to memory of 1328	2044	82de6228af53e0bcd76c186c6899933e.exe	29
PID 1328 wrote to memory of 1344	1328	cmd.exe	31
PID 1328 wrote to memory of 1344	1328	cmd.exe	31
PID 1328 wrote to memory of 1344	1328	cmd.exe	31
PID 1328 wrote to memory of 1344	1328	cmd.exe	31
PID 1328 wrote to memory of 1016	1328	cmd.exe	33
PID 1328 wrote to memory of 1016	1328	cmd.exe	33
PID 1328 wrote to memory of 1016	1328	cmd.exe	33
PID 1328 wrote to memory of 1016	1328	cmd.exe	33

C:\Users\Admin\AppData\Local\Temp\82de6228af53e0bcd76c186c6899933e.exe
"C:\Users\Admin\AppData\Local\Temp\82de6228af53e0bcd76c186c6899933e.exe"
1⤵
- Loads dropped DLL
- Checks processor information in registry
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2044
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im 82de6228af53e0bcd76c186c6899933e.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\82de6228af53e0bcd76c186c6899933e.exe" & del C:\ProgramData\*.dll & exit
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:1328
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im 82de6228af53e0bcd76c186c6899933e.exe /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1344
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 6
    3⤵
    - Delays execution with timeout.exe
    PID:1016