stealc | 4faca83e2b6f22674e8695bca3562096d0a0d561e27dedcb503b9ce604e3bd56

General

Target

4faca83e2b6f22674e8695bca3562096d0a0d561e27dedcb503b9ce604e3bd56.exe
Size

2.2MB
MD5

01917d3e87f511f27fc4fe2a39e4f8c2
SHA1

3712b70dfff1639b57d5aa349a548f06ccf59cbf
SHA256

4faca83e2b6f22674e8695bca3562096d0a0d561e27dedcb503b9ce604e3bd56
SHA512

bcb8cff4d96dd52f25fc000de8be99c5dbd41cc715662227ada96cc40ed9a1463e806537987a9fd5b22157623108da2ea506c25a53a661724201e05c2705322c
SSDEEP

49152:lAgY7fvVtbBaxmcqMTBeerKQl+bH4JbjzzEBETT29YMST:llY7nTMBTBeerKQl+bYxzIBA6uMST

Score

10^/10

stealc vidar discovery spyware stealer

Malware Config

Extracted

Family

vidar

C2

https://t.me/g067n

https://steamcommunity.com/profiles/76561199707802586

Attributes

user_agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:129.0) Gecko/20100101 Firefox/129.0

Signatures

Detect Vidar Stealer 9 IoCs

stealer

resource	yara_rule
behavioral1/memory/1792-1-0x0000000004060000-0x0000000004170000-memory.dmp	family_vidar_v7
behavioral1/memory/5056-8-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/5056-10-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/5056-4-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/5056-11-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/5056-12-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/5056-13-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/5056-14-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/5056-15-0x0000000000400000-0x0000000000648000-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-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation	kat51F8.tmp

Executes dropped EXE 1 IoCs

pid	Process
5056	kat51F8.tmp

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
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 1792 set thread context of 5056	1792	4faca83e2b6f22674e8695bca3562096d0a0d561e27dedcb503b9ce604e3bd56.exe	81

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 opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	kat51F8.tmp
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	kat51F8.tmp

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2316	timeout.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
5056	kat51F8.tmp
5056	kat51F8.tmp
5056	kat51F8.tmp
5056	kat51F8.tmp
5056	kat51F8.tmp
5056	kat51F8.tmp

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 1792 wrote to memory of 5056	1792	4faca83e2b6f22674e8695bca3562096d0a0d561e27dedcb503b9ce604e3bd56.exe	81
PID 1792 wrote to memory of 5056	1792	4faca83e2b6f22674e8695bca3562096d0a0d561e27dedcb503b9ce604e3bd56.exe	81
PID 1792 wrote to memory of 5056	1792	4faca83e2b6f22674e8695bca3562096d0a0d561e27dedcb503b9ce604e3bd56.exe	81
PID 1792 wrote to memory of 5056	1792	4faca83e2b6f22674e8695bca3562096d0a0d561e27dedcb503b9ce604e3bd56.exe	81
PID 1792 wrote to memory of 5056	1792	4faca83e2b6f22674e8695bca3562096d0a0d561e27dedcb503b9ce604e3bd56.exe	81
PID 1792 wrote to memory of 5056	1792	4faca83e2b6f22674e8695bca3562096d0a0d561e27dedcb503b9ce604e3bd56.exe	81
PID 1792 wrote to memory of 5056	1792	4faca83e2b6f22674e8695bca3562096d0a0d561e27dedcb503b9ce604e3bd56.exe	81
PID 1792 wrote to memory of 5056	1792	4faca83e2b6f22674e8695bca3562096d0a0d561e27dedcb503b9ce604e3bd56.exe	81
PID 5056 wrote to memory of 1904	5056	kat51F8.tmp	83
PID 5056 wrote to memory of 1904	5056	kat51F8.tmp	83
PID 5056 wrote to memory of 1904	5056	kat51F8.tmp	83
PID 1904 wrote to memory of 2316	1904	cmd.exe	85
PID 1904 wrote to memory of 2316	1904	cmd.exe	85
PID 1904 wrote to memory of 2316	1904	cmd.exe	85

C:\Users\Admin\AppData\Local\Temp\4faca83e2b6f22674e8695bca3562096d0a0d561e27dedcb503b9ce604e3bd56.exe
"C:\Users\Admin\AppData\Local\Temp\4faca83e2b6f22674e8695bca3562096d0a0d561e27dedcb503b9ce604e3bd56.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1792
- C:\Users\Admin\AppData\Local\Temp\kat51F8.tmp
  C:\Users\Admin\AppData\Local\Temp\kat51F8.tmp
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:5056
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat51F8.tmp" & rd /s /q "C:\ProgramData\HIJEGDBGDBFI" & exit
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1904
  - - C:\Windows\SysWOW64\timeout.exe
      timeout /t 10
      4⤵
      Delays execution with timeout.exe
      PID:2316

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

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

C:\Users\Admin\AppData\Local\Temp\kat51F8.tmp

Filesize
861KB

MD5
66064dbdb70a5eb15ebf3bf65aba254b

SHA1
0284fd320f99f62aca800fb1251eff4c31ec4ed7

SHA256
6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795

SHA512
b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

Download Submit
memory/1792-0-0x0000000000910000-0x0000000000911000-memory.dmp

Filesize
4KB

Download
memory/1792-1-0x0000000004060000-0x0000000004170000-memory.dmp

Filesize
1.1MB

Download
memory/1792-9-0x0000000000400000-0x0000000000641000-memory.dmp

Filesize
2.3MB

Download
memory/5056-8-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/5056-10-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/5056-4-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/5056-11-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/5056-12-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/5056-13-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/5056-14-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/5056-15-0x0000000000400000-0x0000000000648000-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