vidar | 0cda6c7a003ac1c8c7a84a6776bac14cbc4cf55e18b54a9bae9b403b92085fd6

General

Target
bc0aaf892ff90f0c0ced0e375adca2f1.exe
Size 636KB
Sample210423-b1dqp6fcsa
SHA256 0cda6c7a003ac1c8c7a84a6776bac14cbc4cf55e18b54a9bae9b403b92085fd6
MD5 bc0aaf892ff90f0c0ced0e375adca2f1
SHA1 3f38ff42f644cd4f808452d9b6dfb125c24248d9
SHA512 58481d006c350c4e46791f95315ff18c35679e8c393dd000f65d44f3d2ceda232bcd5b2895c9b11107710869eaea88774b70d2bac17071d5bd91f3fffa7384ac
MD5 SHA1 SHA512

Score

10^/10

vidar discovery spyware stealer

Malware Config

Signatures

Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar
Downloads MZ/PE file

Loads dropped DLL 2 IoCs

pid	Process
3944	bc0aaf892ff90f0c0ced0e375adca2f1.exe
3944	bc0aaf892ff90f0c0ced0e375adca2f1.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	bc0aaf892ff90f0c0ced0e375adca2f1.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	bc0aaf892ff90f0c0ced0e375adca2f1.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
3488	timeout.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
1524	taskkill.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
3944	bc0aaf892ff90f0c0ced0e375adca2f1.exe
3944	bc0aaf892ff90f0c0ced0e375adca2f1.exe
3944	bc0aaf892ff90f0c0ced0e375adca2f1.exe
3944	bc0aaf892ff90f0c0ced0e375adca2f1.exe
3944	bc0aaf892ff90f0c0ced0e375adca2f1.exe
3944	bc0aaf892ff90f0c0ced0e375adca2f1.exe
3944	bc0aaf892ff90f0c0ced0e375adca2f1.exe
3944	bc0aaf892ff90f0c0ced0e375adca2f1.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1524	taskkill.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3944 wrote to memory of 3520	3944	bc0aaf892ff90f0c0ced0e375adca2f1.exe	77
PID 3944 wrote to memory of 3520	3944	bc0aaf892ff90f0c0ced0e375adca2f1.exe	77
PID 3944 wrote to memory of 3520	3944	bc0aaf892ff90f0c0ced0e375adca2f1.exe	77
PID 3520 wrote to memory of 1524	3520	cmd.exe	79
PID 3520 wrote to memory of 1524	3520	cmd.exe	79
PID 3520 wrote to memory of 1524	3520	cmd.exe	79
PID 3520 wrote to memory of 3488	3520	cmd.exe	80
PID 3520 wrote to memory of 3488	3520	cmd.exe	80
PID 3520 wrote to memory of 3488	3520	cmd.exe	80

C:\Users\Admin\AppData\Local\Temp\bc0aaf892ff90f0c0ced0e375adca2f1.exe
"C:\Users\Admin\AppData\Local\Temp\bc0aaf892ff90f0c0ced0e375adca2f1.exe"
1⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3944
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im bc0aaf892ff90f0c0ced0e375adca2f1.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\bc0aaf892ff90f0c0ced0e375adca2f1.exe" & del C:\ProgramData\*.dll & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3520
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im bc0aaf892ff90f0c0ced0e375adca2f1.exe /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1524
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 6
    3⤵
    - Delays execution with timeout.exe
    PID:3488

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

4

T1081

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

4

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/3944-114-0x0000000003E10000-0x0000000003EBE000-memory.dmp

Download

memory/3944-115-0x0000000000400000-0x0000000003E07000-memory.dmp