vidar | f8dfe20728fd1cd72cbb4c94b77354ab287a7d3c59021bfdc8e8135e2e19f433

General

Target
cc6e595c99292eb586d8419575609605.exe
Size 515KB
Sample210324-6gee7t5ml2
SHA256 f8dfe20728fd1cd72cbb4c94b77354ab287a7d3c59021bfdc8e8135e2e19f433
MD5 cc6e595c99292eb586d8419575609605
SHA1 ef19ec67c86954244688576e50204b0fd9b1f42c
SHA512 fa2b53eb11ddf123b3b01f87cee48223b0a6d9e20fd9c8346959d832ba6179e9712470b9d113af759b2e22d2c958c0e6f22309c19807db57c03dc97283b2a856
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
772	cmd.exe

Loads dropped DLL 4 IoCs

pid	Process
1684	cc6e595c99292eb586d8419575609605.exe
1684	cc6e595c99292eb586d8419575609605.exe
1684	cc6e595c99292eb586d8419575609605.exe
1684	cc6e595c99292eb586d8419575609605.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	cc6e595c99292eb586d8419575609605.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	cc6e595c99292eb586d8419575609605.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
1988	timeout.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
560	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	cc6e595c99292eb586d8419575609605.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\A8985D3A65E5E5C4B2D7D66D40C6DD2FB19C5436\Blob = 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	cc6e595c99292eb586d8419575609605.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1684	cc6e595c99292eb586d8419575609605.exe
1684	cc6e595c99292eb586d8419575609605.exe
1684	cc6e595c99292eb586d8419575609605.exe
1684	cc6e595c99292eb586d8419575609605.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	560	taskkill.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1684 wrote to memory of 772	1684	cc6e595c99292eb586d8419575609605.exe	31
PID 1684 wrote to memory of 772	1684	cc6e595c99292eb586d8419575609605.exe	31
PID 1684 wrote to memory of 772	1684	cc6e595c99292eb586d8419575609605.exe	31
PID 1684 wrote to memory of 772	1684	cc6e595c99292eb586d8419575609605.exe	31
PID 772 wrote to memory of 560	772	cmd.exe	33
PID 772 wrote to memory of 560	772	cmd.exe	33
PID 772 wrote to memory of 560	772	cmd.exe	33
PID 772 wrote to memory of 560	772	cmd.exe	33
PID 772 wrote to memory of 1988	772	cmd.exe	35
PID 772 wrote to memory of 1988	772	cmd.exe	35
PID 772 wrote to memory of 1988	772	cmd.exe	35
PID 772 wrote to memory of 1988	772	cmd.exe	35

C:\Users\Admin\AppData\Local\Temp\cc6e595c99292eb586d8419575609605.exe
"C:\Users\Admin\AppData\Local\Temp\cc6e595c99292eb586d8419575609605.exe"
1⤵
- Loads dropped DLL
- Checks processor information in registry
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1684
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im cc6e595c99292eb586d8419575609605.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\cc6e595c99292eb586d8419575609605.exe" & del C:\ProgramData\*.dll & exit
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:772
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im cc6e595c99292eb586d8419575609605.exe /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:560
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 6
    3⤵
    - Delays execution with timeout.exe
    PID:1988