vidar | 27b90eaec119dfd5e831a842b715c648e7b889aa973aec8485f7b83bda87c04c

General

Target
2b7d693b5010840ddcde876eb9096ada.exe
Size 2.1MB
Sample210620-xb7mlvvpas
SHA256 27b90eaec119dfd5e831a842b715c648e7b889aa973aec8485f7b83bda87c04c
MD5 2b7d693b5010840ddcde876eb9096ada
SHA1 025a6babb970bd00cff60201901f77be493860c4
SHA512 b34860669babc5037647f7129c50aecfd8beef64b1fe7829fe45513bf340464fe29ec62f4cc44c3a62224cf26468958b7ebf01380c59a1ec304ce279ec488189
MD5 SHA1 SHA512

Score

10^/10

vidar 921 discovery spyware stealer

Malware Config

Extracted

Family

vidar

Version

39.3

Botnet

921

C2

https://bandakere.tumblr.com

Attributes

profile_id
921

Signatures

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

Vidar Stealer 3 IoCs

stealer

resource	yara_rule
behavioral2/memory/4192-117-0x0000000000400000-0x000000000049B000-memory.dmp	family_vidar
behavioral2/memory/4192-118-0x00000000004680AD-mapping.dmp	family_vidar
behavioral2/memory/4192-119-0x0000000000400000-0x000000000049B000-memory.dmp	family_vidar

Downloads MZ/PE file

Loads dropped DLL 2 IoCs

pid	Process
4192	2b7d693b5010840ddcde876eb9096ada.exe
4192	2b7d693b5010840ddcde876eb9096ada.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 4648 set thread context of 4192	4648	2b7d693b5010840ddcde876eb9096ada.exe	80

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	2b7d693b5010840ddcde876eb9096ada.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	2b7d693b5010840ddcde876eb9096ada.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2168	timeout.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
1076	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	2b7d693b5010840ddcde876eb9096ada.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349\Blob = 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	2b7d693b5010840ddcde876eb9096ada.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
4192	2b7d693b5010840ddcde876eb9096ada.exe
4192	2b7d693b5010840ddcde876eb9096ada.exe
4192	2b7d693b5010840ddcde876eb9096ada.exe
4192	2b7d693b5010840ddcde876eb9096ada.exe
4192	2b7d693b5010840ddcde876eb9096ada.exe
4192	2b7d693b5010840ddcde876eb9096ada.exe
4192	2b7d693b5010840ddcde876eb9096ada.exe
4192	2b7d693b5010840ddcde876eb9096ada.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4648	2b7d693b5010840ddcde876eb9096ada.exe
Token: SeDebugPrivilege	1076	taskkill.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4648 wrote to memory of 4220	4648	2b7d693b5010840ddcde876eb9096ada.exe	76
PID 4648 wrote to memory of 4220	4648	2b7d693b5010840ddcde876eb9096ada.exe	76
PID 4648 wrote to memory of 4220	4648	2b7d693b5010840ddcde876eb9096ada.exe	76
PID 4648 wrote to memory of 3132	4648	2b7d693b5010840ddcde876eb9096ada.exe	79
PID 4648 wrote to memory of 3132	4648	2b7d693b5010840ddcde876eb9096ada.exe	79
PID 4648 wrote to memory of 3132	4648	2b7d693b5010840ddcde876eb9096ada.exe	79
PID 4648 wrote to memory of 4192	4648	2b7d693b5010840ddcde876eb9096ada.exe	80
PID 4648 wrote to memory of 4192	4648	2b7d693b5010840ddcde876eb9096ada.exe	80
PID 4648 wrote to memory of 4192	4648	2b7d693b5010840ddcde876eb9096ada.exe	80
PID 4648 wrote to memory of 4192	4648	2b7d693b5010840ddcde876eb9096ada.exe	80
PID 4648 wrote to memory of 4192	4648	2b7d693b5010840ddcde876eb9096ada.exe	80
PID 4648 wrote to memory of 4192	4648	2b7d693b5010840ddcde876eb9096ada.exe	80
PID 4648 wrote to memory of 4192	4648	2b7d693b5010840ddcde876eb9096ada.exe	80
PID 4648 wrote to memory of 4192	4648	2b7d693b5010840ddcde876eb9096ada.exe	80
PID 4192 wrote to memory of 1208	4192	2b7d693b5010840ddcde876eb9096ada.exe	82
PID 4192 wrote to memory of 1208	4192	2b7d693b5010840ddcde876eb9096ada.exe	82
PID 4192 wrote to memory of 1208	4192	2b7d693b5010840ddcde876eb9096ada.exe	82
PID 1208 wrote to memory of 1076	1208	cmd.exe	84
PID 1208 wrote to memory of 1076	1208	cmd.exe	84
PID 1208 wrote to memory of 1076	1208	cmd.exe	84
PID 1208 wrote to memory of 2168	1208	cmd.exe	87
PID 1208 wrote to memory of 2168	1208	cmd.exe	87
PID 1208 wrote to memory of 2168	1208	cmd.exe	87

C:\Users\Admin\AppData\Local\Temp\2b7d693b5010840ddcde876eb9096ada.exe
"C:\Users\Admin\AppData\Local\Temp\2b7d693b5010840ddcde876eb9096ada.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4648
- C:\Users\Admin\AppData\Local\Temp\2b7d693b5010840ddcde876eb9096ada.exe
  C:\Users\Admin\AppData\Local\Temp\2b7d693b5010840ddcde876eb9096ada.exe
  2⤵
  PID:4220
- C:\Users\Admin\AppData\Local\Temp\2b7d693b5010840ddcde876eb9096ada.exe
  C:\Users\Admin\AppData\Local\Temp\2b7d693b5010840ddcde876eb9096ada.exe
  2⤵
  PID:3132
- C:\Users\Admin\AppData\Local\Temp\2b7d693b5010840ddcde876eb9096ada.exe
  C:\Users\Admin\AppData\Local\Temp\2b7d693b5010840ddcde876eb9096ada.exe
  2⤵
  - Loads dropped DLL
  - Checks processor information in registry
  - Modifies system certificate store
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4192
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c taskkill /im 2b7d693b5010840ddcde876eb9096ada.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\2b7d693b5010840ddcde876eb9096ada.exe" & del C:\ProgramData\*.dll & exit
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1208
  - - C:\Windows\SysWOW64\taskkill.exe
      taskkill /im 2b7d693b5010840ddcde876eb9096ada.exe /f
      4⤵
      Kills process with taskkill
      Suspicious use of AdjustPrivilegeToken
      PID:1076
  - - C:\Windows\SysWOW64\timeout.exe
      timeout /t 6
      4⤵
      Delays execution with timeout.exe
      PID:2168