vidar | 63af947ec7ed3fbdc03b580e4369c24c9cb5ab77412802249ddadb92107a2ced

General

Target
91936fdb14481ff7d00bae44312b629c.exe
Size 758KB
Sample211220-gm2cvshfe6
SHA256 63af947ec7ed3fbdc03b580e4369c24c9cb5ab77412802249ddadb92107a2ced
MD5 91936fdb14481ff7d00bae44312b629c
SHA1 1031010579dfd780e1b624026373a197d43fca90
SHA512 50c0255ffc3b05fae4dcc4a853e68e804efb72d39565e1f0d343a386732b030c8de83efc1743495b9ee446ccdb1c82a7969815411c7ad9492404261f1e51d383
MD5 SHA1 SHA512

Score

10^/10

vidar 1081 discovery spyware stealer

Malware Config

Extracted

Family

vidar

Version

49.1

Botnet

1081

C2

https://noc.social/@sergeev46
https://c.im/@sergeev47

Attributes

profile_id
1081

Signatures

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

Vidar Stealer 2 IoCs

stealer

resource	yara_rule
behavioral1/memory/1620-58-0x0000000000400000-0x000000000053E000-memory.dmp	family_vidar
behavioral1/memory/1620-57-0x0000000001E80000-0x0000000001F59000-memory.dmp	family_vidar

Downloads MZ/PE file

Deletes itself 1 IoCs

pid	Process
744	cmd.exe

Loads dropped DLL 4 IoCs

pid	Process
1620	91936fdb14481ff7d00bae44312b629c.exe
1620	91936fdb14481ff7d00bae44312b629c.exe
1620	91936fdb14481ff7d00bae44312b629c.exe
1620	91936fdb14481ff7d00bae44312b629c.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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	91936fdb14481ff7d00bae44312b629c.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	91936fdb14481ff7d00bae44312b629c.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
1528	timeout.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
1060	taskkill.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1620	91936fdb14481ff7d00bae44312b629c.exe
1620	91936fdb14481ff7d00bae44312b629c.exe
1620	91936fdb14481ff7d00bae44312b629c.exe
1620	91936fdb14481ff7d00bae44312b629c.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1060	taskkill.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1620 wrote to memory of 744	1620	91936fdb14481ff7d00bae44312b629c.exe	29
PID 1620 wrote to memory of 744	1620	91936fdb14481ff7d00bae44312b629c.exe	29
PID 1620 wrote to memory of 744	1620	91936fdb14481ff7d00bae44312b629c.exe	29
PID 1620 wrote to memory of 744	1620	91936fdb14481ff7d00bae44312b629c.exe	29
PID 744 wrote to memory of 1060	744	cmd.exe	31
PID 744 wrote to memory of 1060	744	cmd.exe	31
PID 744 wrote to memory of 1060	744	cmd.exe	31
PID 744 wrote to memory of 1060	744	cmd.exe	31
PID 744 wrote to memory of 1528	744	cmd.exe	33
PID 744 wrote to memory of 1528	744	cmd.exe	33
PID 744 wrote to memory of 1528	744	cmd.exe	33
PID 744 wrote to memory of 1528	744	cmd.exe	33

C:\Users\Admin\AppData\Local\Temp\91936fdb14481ff7d00bae44312b629c.exe
"C:\Users\Admin\AppData\Local\Temp\91936fdb14481ff7d00bae44312b629c.exe"
1⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1620
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im 91936fdb14481ff7d00bae44312b629c.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\91936fdb14481ff7d00bae44312b629c.exe" & del C:\ProgramData\*.dll & exit
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:744
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im 91936fdb14481ff7d00bae44312b629c.exe /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1060
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 6
    3⤵
    - Delays execution with timeout.exe
    PID:1528

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/1620-55-0x000000000099B000-0x0000000000A18000-memory.dmp

Download

memory/1620-57-0x0000000001E80000-0x0000000001F59000-memory.dmp

Download

memory/1620-58-0x0000000000400000-0x000000000053E000-memory.dmp

Download

memory/1620-56-0x0000000075AC1000-0x0000000075AC3000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads