vidar | 9379db9909eb90bc81cdb07b2d7dcbef69e5b1374e93b30153270ef2e58afe28

General

Target
0e5986c256d2611294f5ef8b6d9ea73f.exe
Size 590KB
Sample210322-rd445qkd7x
SHA256 9379db9909eb90bc81cdb07b2d7dcbef69e5b1374e93b30153270ef2e58afe28
MD5 0e5986c256d2611294f5ef8b6d9ea73f
SHA1 1df628e4e063c068896e3d316b364ae6acf3554c
SHA512 ca2e6d7e896e9555f3cf91f1e27c693151df6b0025ea868b32a40ae3f482273d1a4d7d53bf1bbc8eca1ba082c8942eab87837e52523df2da90b5ab435ede47ff
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
1852	cmd.exe

Loads dropped DLL 4 IoCs

pid	Process
1596	0e5986c256d2611294f5ef8b6d9ea73f.exe
1596	0e5986c256d2611294f5ef8b6d9ea73f.exe
1596	0e5986c256d2611294f5ef8b6d9ea73f.exe
1596	0e5986c256d2611294f5ef8b6d9ea73f.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	0e5986c256d2611294f5ef8b6d9ea73f.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	0e5986c256d2611294f5ef8b6d9ea73f.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
340	timeout.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
432	taskkill.exe

Modifies system certificate store 2 TTPs 2 IoCs

evasion spyware trojan

Install Root Certificate

T1130

Modify Registry

T1112

description	ioc	Process
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\A8985D3A65E5E5C4B2D7D66D40C6DD2FB19C5436\Blob = 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	0e5986c256d2611294f5ef8b6d9ea73f.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\A8985D3A65E5E5C4B2D7D66D40C6DD2FB19C5436	0e5986c256d2611294f5ef8b6d9ea73f.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1596	0e5986c256d2611294f5ef8b6d9ea73f.exe
1596	0e5986c256d2611294f5ef8b6d9ea73f.exe
1596	0e5986c256d2611294f5ef8b6d9ea73f.exe
1596	0e5986c256d2611294f5ef8b6d9ea73f.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	432	taskkill.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1596 wrote to memory of 1852	1596	0e5986c256d2611294f5ef8b6d9ea73f.exe	31
PID 1596 wrote to memory of 1852	1596	0e5986c256d2611294f5ef8b6d9ea73f.exe	31
PID 1596 wrote to memory of 1852	1596	0e5986c256d2611294f5ef8b6d9ea73f.exe	31
PID 1596 wrote to memory of 1852	1596	0e5986c256d2611294f5ef8b6d9ea73f.exe	31
PID 1852 wrote to memory of 432	1852	cmd.exe	33
PID 1852 wrote to memory of 432	1852	cmd.exe	33
PID 1852 wrote to memory of 432	1852	cmd.exe	33
PID 1852 wrote to memory of 432	1852	cmd.exe	33
PID 1852 wrote to memory of 340	1852	cmd.exe	35
PID 1852 wrote to memory of 340	1852	cmd.exe	35
PID 1852 wrote to memory of 340	1852	cmd.exe	35
PID 1852 wrote to memory of 340	1852	cmd.exe	35

C:\Users\Admin\AppData\Local\Temp\0e5986c256d2611294f5ef8b6d9ea73f.exe
"C:\Users\Admin\AppData\Local\Temp\0e5986c256d2611294f5ef8b6d9ea73f.exe"
1⤵
- Loads dropped DLL
- Checks processor information in registry
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1596
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im 0e5986c256d2611294f5ef8b6d9ea73f.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\0e5986c256d2611294f5ef8b6d9ea73f.exe" & del C:\ProgramData\*.dll & exit
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:1852
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im 0e5986c256d2611294f5ef8b6d9ea73f.exe /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:432
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 6
    3⤵
    - Delays execution with timeout.exe
    PID:340