vidar | d5a207da0ff7f562e93477fe49d54cfcac75d4637125755c26db77a7d50ec40c

General

Target
0f92134ed4621473294d7ec28fc4ccef.exe
Size 521KB
Sample210429-eaafz5gpsj
SHA256 d5a207da0ff7f562e93477fe49d54cfcac75d4637125755c26db77a7d50ec40c
MD5 0f92134ed4621473294d7ec28fc4ccef
SHA1 7a536a0dd184721275884d3d9ccdfc153467a927
SHA512 6d3679ab264825e04bf27541c59a4a65b309965d94ac78837da8dda819e384c77796a31aa086b70baa858dbb07a35dea9893118af16773e6af9474cae0aac61f
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
3904	0f92134ed4621473294d7ec28fc4ccef.exe
3904	0f92134ed4621473294d7ec28fc4ccef.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	0f92134ed4621473294d7ec28fc4ccef.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	0f92134ed4621473294d7ec28fc4ccef.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
3448	timeout.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
4008	taskkill.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
3904	0f92134ed4621473294d7ec28fc4ccef.exe
3904	0f92134ed4621473294d7ec28fc4ccef.exe
3904	0f92134ed4621473294d7ec28fc4ccef.exe
3904	0f92134ed4621473294d7ec28fc4ccef.exe
3904	0f92134ed4621473294d7ec28fc4ccef.exe
3904	0f92134ed4621473294d7ec28fc4ccef.exe
3904	0f92134ed4621473294d7ec28fc4ccef.exe
3904	0f92134ed4621473294d7ec28fc4ccef.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4008	taskkill.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3904 wrote to memory of 1888	3904	0f92134ed4621473294d7ec28fc4ccef.exe	79
PID 3904 wrote to memory of 1888	3904	0f92134ed4621473294d7ec28fc4ccef.exe	79
PID 3904 wrote to memory of 1888	3904	0f92134ed4621473294d7ec28fc4ccef.exe	79
PID 1888 wrote to memory of 4008	1888	cmd.exe	81
PID 1888 wrote to memory of 4008	1888	cmd.exe	81
PID 1888 wrote to memory of 4008	1888	cmd.exe	81
PID 1888 wrote to memory of 3448	1888	cmd.exe	82
PID 1888 wrote to memory of 3448	1888	cmd.exe	82
PID 1888 wrote to memory of 3448	1888	cmd.exe	82

C:\Users\Admin\AppData\Local\Temp\0f92134ed4621473294d7ec28fc4ccef.exe
"C:\Users\Admin\AppData\Local\Temp\0f92134ed4621473294d7ec28fc4ccef.exe"
1⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3904
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im 0f92134ed4621473294d7ec28fc4ccef.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\0f92134ed4621473294d7ec28fc4ccef.exe" & del C:\ProgramData\*.dll & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1888
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im 0f92134ed4621473294d7ec28fc4ccef.exe /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:4008
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 6
    3⤵
    - Delays execution with timeout.exe
    PID:3448

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

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Downloads

memory/3904-115-0x0000000000400000-0x00000000004A1000-memory.dmp

Download

memory/3904-114-0x0000000000580000-0x00000000006CA000-memory.dmp