vidar | b321dd84ea5077a7e434736e16ffd5df18afc1effd843f36d4717cf56f42785e

General

Target
bee291f9e401727d7915c8ee9fce945c.exe
Size 692KB
Sample210622-xmehhtt39s
SHA256 b321dd84ea5077a7e434736e16ffd5df18afc1effd843f36d4717cf56f42785e
MD5 bee291f9e401727d7915c8ee9fce945c
SHA1 946732869791f3c9cab4866c4077c3a892870419
SHA512 89fb3c2bcbcb7a23eb7db6a5277cd1beffc2d676727b9a833e6499b1c05583854096e013870fc212b557e4383966bc5b20f725db67415446846bb3bdcdfad695
MD5 SHA1 SHA512

Score

10^/10

vidar 932 discovery spyware stealer

Malware Config

Extracted

Family

vidar

Version

39.4

Botnet

932

C2

https://sergeevih43.tumblr.com

Attributes

profile_id
932

Signatures

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

Vidar Stealer 2 IoCs

stealer

resource	yara_rule
behavioral2/memory/3128-114-0x00000000026B0000-0x000000000274D000-memory.dmp	family_vidar
behavioral2/memory/3128-115-0x0000000000400000-0x000000000094B000-memory.dmp	family_vidar

Downloads MZ/PE file

Loads dropped DLL 2 IoCs

pid	Process
3128	bee291f9e401727d7915c8ee9fce945c.exe
3128	bee291f9e401727d7915c8ee9fce945c.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	bee291f9e401727d7915c8ee9fce945c.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	bee291f9e401727d7915c8ee9fce945c.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
3676	timeout.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
3644	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	bee291f9e401727d7915c8ee9fce945c.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349\Blob = 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	bee291f9e401727d7915c8ee9fce945c.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
3128	bee291f9e401727d7915c8ee9fce945c.exe
3128	bee291f9e401727d7915c8ee9fce945c.exe
3128	bee291f9e401727d7915c8ee9fce945c.exe
3128	bee291f9e401727d7915c8ee9fce945c.exe
3128	bee291f9e401727d7915c8ee9fce945c.exe
3128	bee291f9e401727d7915c8ee9fce945c.exe
3128	bee291f9e401727d7915c8ee9fce945c.exe
3128	bee291f9e401727d7915c8ee9fce945c.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3644	taskkill.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3128 wrote to memory of 3640	3128	bee291f9e401727d7915c8ee9fce945c.exe	78
PID 3128 wrote to memory of 3640	3128	bee291f9e401727d7915c8ee9fce945c.exe	78
PID 3128 wrote to memory of 3640	3128	bee291f9e401727d7915c8ee9fce945c.exe	78
PID 3640 wrote to memory of 3644	3640	cmd.exe	80
PID 3640 wrote to memory of 3644	3640	cmd.exe	80
PID 3640 wrote to memory of 3644	3640	cmd.exe	80
PID 3640 wrote to memory of 3676	3640	cmd.exe	82
PID 3640 wrote to memory of 3676	3640	cmd.exe	82
PID 3640 wrote to memory of 3676	3640	cmd.exe	82

C:\Users\Admin\AppData\Local\Temp\bee291f9e401727d7915c8ee9fce945c.exe
"C:\Users\Admin\AppData\Local\Temp\bee291f9e401727d7915c8ee9fce945c.exe"
1⤵
- Loads dropped DLL
- Checks processor information in registry
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3128
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im bee291f9e401727d7915c8ee9fce945c.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\bee291f9e401727d7915c8ee9fce945c.exe" & del C:\ProgramData\*.dll & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3640
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im bee291f9e401727d7915c8ee9fce945c.exe /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:3644
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 6
    3⤵
    - Delays execution with timeout.exe
    PID:3676