vidar | 5cdade4f7abf84af2fab04c925456f616a170751bde63e4c1ce5f5bd7c47762d

General

Target
5feeaecfcedffcfb56f058ec1d58943c.exe
Size 666KB
Sample211007-pay1zacch2
SHA256 5cdade4f7abf84af2fab04c925456f616a170751bde63e4c1ce5f5bd7c47762d
MD5 5feeaecfcedffcfb56f058ec1d58943c
SHA1 04b34807af89252bc7adce7d6980b6c0dd76eb7f
SHA512 6b61f60675ba64ef0b89e376d283a0879dcfd0f17484a8c1209ae104ddf39dd269c970e4cc6ab703000790581140db6c7aba6b41967aa8e28beb7897e586acfe
MD5 SHA1 SHA512

Score

10^/10

vidar discovery spyware stealer

Malware Config

Signatures

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

Vidar Stealer 2 IoCs

stealer

resource	yara_rule
behavioral2/memory/900-115-0x0000000000400000-0x00000000008D6000-memory.dmp	family_vidar
behavioral2/memory/900-114-0x00000000024C0000-0x0000000002596000-memory.dmp	family_vidar

Downloads MZ/PE file

Loads dropped DLL 2 IoCs

pid	Process
900	5feeaecfcedffcfb56f058ec1d58943c.exe
900	5feeaecfcedffcfb56f058ec1d58943c.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	5feeaecfcedffcfb56f058ec1d58943c.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	5feeaecfcedffcfb56f058ec1d58943c.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
3960	timeout.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
2444	taskkill.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
900	5feeaecfcedffcfb56f058ec1d58943c.exe
900	5feeaecfcedffcfb56f058ec1d58943c.exe
900	5feeaecfcedffcfb56f058ec1d58943c.exe
900	5feeaecfcedffcfb56f058ec1d58943c.exe
900	5feeaecfcedffcfb56f058ec1d58943c.exe
900	5feeaecfcedffcfb56f058ec1d58943c.exe
900	5feeaecfcedffcfb56f058ec1d58943c.exe
900	5feeaecfcedffcfb56f058ec1d58943c.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2444	taskkill.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 900 wrote to memory of 1704	900	5feeaecfcedffcfb56f058ec1d58943c.exe	69
PID 900 wrote to memory of 1704	900	5feeaecfcedffcfb56f058ec1d58943c.exe	69
PID 900 wrote to memory of 1704	900	5feeaecfcedffcfb56f058ec1d58943c.exe	69
PID 1704 wrote to memory of 2444	1704	cmd.exe	72
PID 1704 wrote to memory of 2444	1704	cmd.exe	72
PID 1704 wrote to memory of 2444	1704	cmd.exe	72
PID 1704 wrote to memory of 3960	1704	cmd.exe	73
PID 1704 wrote to memory of 3960	1704	cmd.exe	73
PID 1704 wrote to memory of 3960	1704	cmd.exe	73

C:\Users\Admin\AppData\Local\Temp\5feeaecfcedffcfb56f058ec1d58943c.exe
"C:\Users\Admin\AppData\Local\Temp\5feeaecfcedffcfb56f058ec1d58943c.exe"
1⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:900
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im 5feeaecfcedffcfb56f058ec1d58943c.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\5feeaecfcedffcfb56f058ec1d58943c.exe" & del C:\ProgramData\*.dll & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1704
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im 5feeaecfcedffcfb56f058ec1d58943c.exe /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:2444
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 6
    3⤵
    - Delays execution with timeout.exe
    PID:3960

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

3

T1081

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

3

T1005

Command and Control

Exfiltration

Impact

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Downloads

memory/900-115-0x0000000000400000-0x00000000008D6000-memory.dmp

Download

memory/900-114-0x00000000024C0000-0x0000000002596000-memory.dmp