vidar | 6735a63705ffd1faf9a0925cfeddda7868752db0965462cd3bb5d4a54f7fe2da

General

Target
4b0721253ea0ddb4d362ecff8c6dec35.exe
Size 574KB
Sample210327-77ram4sctx
SHA256 6735a63705ffd1faf9a0925cfeddda7868752db0965462cd3bb5d4a54f7fe2da
MD5 4b0721253ea0ddb4d362ecff8c6dec35
SHA1 44ee6e4a1c9ee4e752d8784d19c778b614c6c680
SHA512 1f7c88813c5c02b32c5e1ee3250cefe7371aabdf6420cb9f41f0de2aa19f7b0c023dd0ba3da6bf66c3dfa4d03be30317c5660e2832f922514d76ea98bbc099ea
MD5 SHA1 SHA512

Score

10^/10

vidar discovery spyware stealer

Malware Config

Signatures

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

Deletes itself 1 IoCs

pid	Process
1572	cmd.exe

Loads dropped DLL 4 IoCs

pid	Process
1932	4b0721253ea0ddb4d362ecff8c6dec35.exe
1932	4b0721253ea0ddb4d362ecff8c6dec35.exe
1932	4b0721253ea0ddb4d362ecff8c6dec35.exe
1932	4b0721253ea0ddb4d362ecff8c6dec35.exe

Reads local data of messenger clients 2 TTPs
Infostealers often target stored data of messaging applications, which can include saved credentials and account information.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
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	4b0721253ea0ddb4d362ecff8c6dec35.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	4b0721253ea0ddb4d362ecff8c6dec35.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
564	timeout.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
1516	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\A8985D3A65E5E5C4B2D7D66D40C6DD2FB19C5436	4b0721253ea0ddb4d362ecff8c6dec35.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\A8985D3A65E5E5C4B2D7D66D40C6DD2FB19C5436\Blob = 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	4b0721253ea0ddb4d362ecff8c6dec35.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1932	4b0721253ea0ddb4d362ecff8c6dec35.exe
1932	4b0721253ea0ddb4d362ecff8c6dec35.exe
1932	4b0721253ea0ddb4d362ecff8c6dec35.exe
1932	4b0721253ea0ddb4d362ecff8c6dec35.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1516	taskkill.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1932 wrote to memory of 1572	1932	4b0721253ea0ddb4d362ecff8c6dec35.exe	31
PID 1932 wrote to memory of 1572	1932	4b0721253ea0ddb4d362ecff8c6dec35.exe	31
PID 1932 wrote to memory of 1572	1932	4b0721253ea0ddb4d362ecff8c6dec35.exe	31
PID 1932 wrote to memory of 1572	1932	4b0721253ea0ddb4d362ecff8c6dec35.exe	31
PID 1572 wrote to memory of 1516	1572	cmd.exe	33
PID 1572 wrote to memory of 1516	1572	cmd.exe	33
PID 1572 wrote to memory of 1516	1572	cmd.exe	33
PID 1572 wrote to memory of 1516	1572	cmd.exe	33
PID 1572 wrote to memory of 564	1572	cmd.exe	35
PID 1572 wrote to memory of 564	1572	cmd.exe	35
PID 1572 wrote to memory of 564	1572	cmd.exe	35
PID 1572 wrote to memory of 564	1572	cmd.exe	35

C:\Users\Admin\AppData\Local\Temp\4b0721253ea0ddb4d362ecff8c6dec35.exe
"C:\Users\Admin\AppData\Local\Temp\4b0721253ea0ddb4d362ecff8c6dec35.exe"
1⤵
- Loads dropped DLL
- Checks processor information in registry
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1932
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im 4b0721253ea0ddb4d362ecff8c6dec35.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\4b0721253ea0ddb4d362ecff8c6dec35.exe" & del C:\ProgramData\*.dll & exit
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:1572
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im 4b0721253ea0ddb4d362ecff8c6dec35.exe /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1516
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 6
    3⤵
    - Delays execution with timeout.exe
    PID:564