stealc | c58842bb0fdcff37f9ad04db475e9769a3a5449125d5044d518baea2640d2716

General

Target

011abc7752ab3180e8016d7f395a1a10.dll
Size

2.3MB
MD5

011abc7752ab3180e8016d7f395a1a10
SHA1

c76164145c4a0debefa4a44cf9107e85d0428f32
SHA256

c58842bb0fdcff37f9ad04db475e9769a3a5449125d5044d518baea2640d2716
SHA512

037b0544cca532dbb0574d2ad189fc33ad794e67c2b71273f7a9c3973c5ac80aaaf2fbc4bf2cd30594b5d00f4062c2f99457c6ea4204a5dad54ec5dfda648ed3
SSDEEP

49152:x0ecwe0AWB48iGNnEtyX849TdByyfRhL3Au0EcoHUsdWwNs:oweu48iGStyXlRRhLwHsUsdWEs

Score

10^/10

stealc vidar discovery persistence spyware stealer

Malware Config

Extracted

Family

vidar

C2

https://t.me/g067n

https://steamcommunity.com/profiles/76561199707802586

Signatures

Detect Vidar Stealer 10 IoCs

stealer

resource	yara_rule
behavioral2/memory/1100-2-0x0000000010000000-0x0000000010260000-memory.dmp	family_vidar_v7
behavioral2/memory/1100-7-0x0000000010000000-0x0000000010260000-memory.dmp	family_vidar_v7
behavioral2/memory/1100-5-0x0000000010000000-0x0000000010260000-memory.dmp	family_vidar_v7
behavioral2/memory/2680-9-0x0000000000FE0000-0x0000000001228000-memory.dmp	family_vidar_v7
behavioral2/memory/2680-8-0x0000000000FE0000-0x0000000001228000-memory.dmp	family_vidar_v7
behavioral2/memory/2680-10-0x0000000000FE0000-0x0000000001228000-memory.dmp	family_vidar_v7
behavioral2/memory/2680-11-0x0000000000FE0000-0x0000000001228000-memory.dmp	family_vidar_v7
behavioral2/memory/2680-13-0x0000000000FE0000-0x0000000001228000-memory.dmp	family_vidar_v7
behavioral2/memory/2680-12-0x0000000000FE0000-0x0000000001228000-memory.dmp	family_vidar_v7
behavioral2/memory/2680-15-0x0000000000FE0000-0x0000000001228000-memory.dmp	family_vidar_v7

Stealc
Stealc is an infostealer written in C++.
stealer stealc
Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation	rundll32.exe

Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\*madrePuta = "rundll32.exe C:\\Users\\Admin\\Documents\\FirefoxData.dll,EntryPoint"	reg.exe

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 NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
1100	rundll32.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

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	rundll32.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	rundll32.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
4392	timeout.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2680	rundll32.exe
2680	rundll32.exe
2680	rundll32.exe
2680	rundll32.exe
2680	rundll32.exe
2680	rundll32.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 4640 wrote to memory of 1100	4640	rundll32.exe	80
PID 4640 wrote to memory of 1100	4640	rundll32.exe	80
PID 4640 wrote to memory of 1100	4640	rundll32.exe	80
PID 1100 wrote to memory of 2680	1100	rundll32.exe	81
PID 1100 wrote to memory of 2680	1100	rundll32.exe	81
PID 1100 wrote to memory of 2680	1100	rundll32.exe	81
PID 1100 wrote to memory of 2680	1100	rundll32.exe	81
PID 1100 wrote to memory of 2680	1100	rundll32.exe	81
PID 1100 wrote to memory of 2680	1100	rundll32.exe	81
PID 1100 wrote to memory of 2232	1100	rundll32.exe	82
PID 1100 wrote to memory of 2232	1100	rundll32.exe	82
PID 1100 wrote to memory of 2232	1100	rundll32.exe	82
PID 2232 wrote to memory of 4840	2232	cmd.exe	84
PID 2232 wrote to memory of 4840	2232	cmd.exe	84
PID 2232 wrote to memory of 4840	2232	cmd.exe	84
PID 2680 wrote to memory of 4532	2680	rundll32.exe	87
PID 2680 wrote to memory of 4532	2680	rundll32.exe	87
PID 2680 wrote to memory of 4532	2680	rundll32.exe	87
PID 4532 wrote to memory of 4392	4532	cmd.exe	89
PID 4532 wrote to memory of 4392	4532	cmd.exe	89
PID 4532 wrote to memory of 4392	4532	cmd.exe	89

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\011abc7752ab3180e8016d7f395a1a10.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4640
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\011abc7752ab3180e8016d7f395a1a10.dll,#1
  2⤵
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - Suspicious use of WriteProcessMemory
  PID:1100
- - C:\Windows\SysWOW64\rundll32.exe
    "C:\Windows\SysWOW64\rundll32.exe"
    3⤵
    - Checks computer location settings
    - Checks processor information in registry
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:2680
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Windows\SysWOW64\rundll32.exe" & rd /s /q "C:\ProgramData\AAKEGIJEHJDG" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:4532
    - - C:\Windows\SysWOW64\timeout.exe
        
        timeout /t 10
        5⤵
        Delays execution with timeout.exe
        
        PID:4392
- - C:\Windows\SysWOW64\cmd.exe
    cmd.exe /C reg add "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "*madrePuta" /t REG_SZ /d "rundll32.exe C:\Users\Admin\Documents\FirefoxData.dll",EntryPoint /f & exit
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2232
  - - C:\Windows\SysWOW64\reg.exe
      reg add "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "*madrePuta" /t REG_SZ /d "rundll32.exe C:\Users\Admin\Documents\FirefoxData.dll",EntryPoint /f
      4⤵
      Adds Run key to start application
      PID:4840

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Query Registry

3

T1012

System Information Discovery

3

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

memory/1100-0-0x0000000010000000-0x0000000010260000-memory.dmp

Filesize
2.4MB

Download
memory/1100-1-0x0000000010004000-0x000000001001E000-memory.dmp

Filesize
104KB

Download
memory/1100-2-0x0000000010000000-0x0000000010260000-memory.dmp

Filesize
2.4MB

Download
memory/1100-7-0x0000000010000000-0x0000000010260000-memory.dmp

Filesize
2.4MB

Download
memory/1100-5-0x0000000010000000-0x0000000010260000-memory.dmp

Filesize
2.4MB

Download
memory/2680-3-0x0000000000EB0000-0x0000000000EB1000-memory.dmp

Filesize
4KB

Download
memory/2680-9-0x0000000000FE0000-0x0000000001228000-memory.dmp

Filesize
2.3MB

Download
memory/2680-8-0x0000000000FE0000-0x0000000001228000-memory.dmp

Filesize
2.3MB

Download
memory/2680-10-0x0000000000FE0000-0x0000000001228000-memory.dmp

Filesize
2.3MB

Download
memory/2680-11-0x0000000000FE0000-0x0000000001228000-memory.dmp

Filesize
2.3MB

Download
memory/2680-13-0x0000000000FE0000-0x0000000001228000-memory.dmp

Filesize
2.3MB

Download
memory/2680-12-0x0000000000FE0000-0x0000000001228000-memory.dmp

Filesize
2.3MB

Download
memory/2680-15-0x0000000000FE0000-0x0000000001228000-memory.dmp

Filesize
2.3MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads