vidar | cee8738edc8a8a93d3313ad03698b456d39f5acaacaf357e4580784e45692369

General

Target
945c83b2f80e0d932e4ce8976a56b8e0.exe
Size 711KB
Sample210706-ppmgfbr9kj
SHA256 cee8738edc8a8a93d3313ad03698b456d39f5acaacaf357e4580784e45692369
MD5 945c83b2f80e0d932e4ce8976a56b8e0
SHA1 3c8c0c522190599d70a56ab4e2286a7e75f71a57
SHA512 d9287cf6e64b41697d07be6af20faea09ae09989e79823214c0116f4d8775e1f8b14a352a001b87546b5ef308bf50e190b4d25836fc0168b240637065dcde137
MD5 SHA1 SHA512

Score

10^/10

vidar 313 discovery spyware stealer

Malware Config

Extracted

Family

vidar

Version

39.4

Botnet

313

C2

https://sergeevih43.tumblr.com

Attributes

profile_id
313

Signatures

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

Vidar Stealer 3 IoCs

stealer

resource	yara_rule
behavioral2/memory/3892-127-0x0000000000400000-0x00000000004A1000-memory.dmp	family_vidar
behavioral2/memory/3892-128-0x000000000046B76D-mapping.dmp	family_vidar
behavioral2/memory/3892-129-0x0000000000400000-0x00000000004A1000-memory.dmp	family_vidar

Downloads MZ/PE file

Loads dropped DLL 2 IoCs

pid	Process
3892	945c83b2f80e0d932e4ce8976a56b8e0.exe
3892	945c83b2f80e0d932e4ce8976a56b8e0.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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3256 set thread context of 3892	3256	945c83b2f80e0d932e4ce8976a56b8e0.exe	80

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	945c83b2f80e0d932e4ce8976a56b8e0.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	945c83b2f80e0d932e4ce8976a56b8e0.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2124	timeout.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
1696	taskkill.exe

Modifies system certificate store 2 TTPs 2 IoCs

evasion spyware trojan

Install Root Certificate

T1130

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349	945c83b2f80e0d932e4ce8976a56b8e0.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349\Blob = 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	945c83b2f80e0d932e4ce8976a56b8e0.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
3256	945c83b2f80e0d932e4ce8976a56b8e0.exe
3256	945c83b2f80e0d932e4ce8976a56b8e0.exe
3256	945c83b2f80e0d932e4ce8976a56b8e0.exe
3256	945c83b2f80e0d932e4ce8976a56b8e0.exe
3256	945c83b2f80e0d932e4ce8976a56b8e0.exe
3256	945c83b2f80e0d932e4ce8976a56b8e0.exe
3892	945c83b2f80e0d932e4ce8976a56b8e0.exe
3892	945c83b2f80e0d932e4ce8976a56b8e0.exe
3892	945c83b2f80e0d932e4ce8976a56b8e0.exe
3892	945c83b2f80e0d932e4ce8976a56b8e0.exe
3892	945c83b2f80e0d932e4ce8976a56b8e0.exe
3892	945c83b2f80e0d932e4ce8976a56b8e0.exe
3892	945c83b2f80e0d932e4ce8976a56b8e0.exe
3892	945c83b2f80e0d932e4ce8976a56b8e0.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3256	945c83b2f80e0d932e4ce8976a56b8e0.exe
Token: SeDebugPrivilege	1696	taskkill.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 3256 wrote to memory of 2912	3256	945c83b2f80e0d932e4ce8976a56b8e0.exe	79
PID 3256 wrote to memory of 2912	3256	945c83b2f80e0d932e4ce8976a56b8e0.exe	79
PID 3256 wrote to memory of 2912	3256	945c83b2f80e0d932e4ce8976a56b8e0.exe	79
PID 3256 wrote to memory of 3892	3256	945c83b2f80e0d932e4ce8976a56b8e0.exe	80
PID 3256 wrote to memory of 3892	3256	945c83b2f80e0d932e4ce8976a56b8e0.exe	80
PID 3256 wrote to memory of 3892	3256	945c83b2f80e0d932e4ce8976a56b8e0.exe	80
PID 3256 wrote to memory of 3892	3256	945c83b2f80e0d932e4ce8976a56b8e0.exe	80
PID 3256 wrote to memory of 3892	3256	945c83b2f80e0d932e4ce8976a56b8e0.exe	80
PID 3256 wrote to memory of 3892	3256	945c83b2f80e0d932e4ce8976a56b8e0.exe	80
PID 3256 wrote to memory of 3892	3256	945c83b2f80e0d932e4ce8976a56b8e0.exe	80
PID 3256 wrote to memory of 3892	3256	945c83b2f80e0d932e4ce8976a56b8e0.exe	80
PID 3892 wrote to memory of 2832	3892	945c83b2f80e0d932e4ce8976a56b8e0.exe	81
PID 3892 wrote to memory of 2832	3892	945c83b2f80e0d932e4ce8976a56b8e0.exe	81
PID 3892 wrote to memory of 2832	3892	945c83b2f80e0d932e4ce8976a56b8e0.exe	81
PID 2832 wrote to memory of 1696	2832	cmd.exe	83
PID 2832 wrote to memory of 1696	2832	cmd.exe	83
PID 2832 wrote to memory of 1696	2832	cmd.exe	83
PID 2832 wrote to memory of 2124	2832	cmd.exe	85
PID 2832 wrote to memory of 2124	2832	cmd.exe	85
PID 2832 wrote to memory of 2124	2832	cmd.exe	85

C:\Users\Admin\AppData\Local\Temp\945c83b2f80e0d932e4ce8976a56b8e0.exe
"C:\Users\Admin\AppData\Local\Temp\945c83b2f80e0d932e4ce8976a56b8e0.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3256
- C:\Users\Admin\AppData\Local\Temp\945c83b2f80e0d932e4ce8976a56b8e0.exe
  C:\Users\Admin\AppData\Local\Temp\945c83b2f80e0d932e4ce8976a56b8e0.exe
  2⤵
  PID:2912
- C:\Users\Admin\AppData\Local\Temp\945c83b2f80e0d932e4ce8976a56b8e0.exe
  C:\Users\Admin\AppData\Local\Temp\945c83b2f80e0d932e4ce8976a56b8e0.exe
  2⤵
  - Loads dropped DLL
  - Checks processor information in registry
  - Modifies system certificate store
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:3892
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c taskkill /im 945c83b2f80e0d932e4ce8976a56b8e0.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\945c83b2f80e0d932e4ce8976a56b8e0.exe" & del C:\ProgramData\*.dll & exit
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2832
  - - C:\Windows\SysWOW64\taskkill.exe
      taskkill /im 945c83b2f80e0d932e4ce8976a56b8e0.exe /f
      4⤵
      Kills process with taskkill
      Suspicious use of AdjustPrivilegeToken
      PID:1696
  - - C:\Windows\SysWOW64\timeout.exe
      timeout /t 6
      4⤵
      Delays execution with timeout.exe
      PID:2124

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Install Root Certificate

Modify Registry

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/3256-120-0x0000000004C60000-0x0000000004CF2000-memory.dmp

Download

memory/3256-126-0x0000000006AA0000-0x0000000006B02000-memory.dmp

Download

memory/3256-121-0x0000000006780000-0x0000000006813000-memory.dmp

Download

memory/3256-114-0x00000000003C0000-0x00000000003C1000-memory.dmp

Download

memory/3256-119-0x0000000004CA0000-0x0000000004CA1000-memory.dmp

Download

memory/3256-118-0x0000000004C60000-0x0000000004CF2000-memory.dmp

Download

memory/3256-117-0x0000000004D80000-0x0000000004D81000-memory.dmp

Download

memory/3256-116-0x0000000005280000-0x0000000005281000-memory.dmp

Download

memory/3892-129-0x0000000000400000-0x00000000004A1000-memory.dmp

Download

memory/3892-127-0x0000000000400000-0x00000000004A1000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads