stealc | 5cebadc0cb63658ed8782abb8825847bca340fa759a4cf987efe66fc912ad23c

Analysis

max time kernel
43s
max time network
52s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
24/06/2024, 20:16

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General

Target
5cebadc0cb63658ed8782abb8825847bca340fa759a4cf987efe66fc912ad23c.exe
Size 2.1MB
Sample240624-y2a8natgrp
SHA256 5cebadc0cb63658ed8782abb8825847bca340fa759a4cf987efe66fc912ad23c
MD5 c161cd484887600ed480f93142ea9492
SHA1 6b23d38ced013281810a7e48bcceb29661cd6e5d
SHA512 47e4d52cbf11e1b59fc6bc434de44c4c65c0cc489420b6f8d6f1c60f6d8dcac11f4ea5f26e6ba5897aa289b6aa9c34f507b45014ca2025d7746b7c7b61c1757f
SSDEEP 24576:cC/gyrgOo5VvmUfq+Zc1Fsuqf9sJUfMxVVtes12FxwojKr98YGeGGHzqqikY+rPN:c3xbZcjHJUkxVVChjHZQHzqZ+rPlV
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

stealc vidar discovery spyware stealer

Malware Config

Extracted

Family

vidar

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
behavioral2/memory/640-2-0x0000000004160000-0x0000000004270000-memory.dmp	family_vidar_v7
behavioral2/memory/1784-4-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/1784-8-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/1784-10-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/1784-11-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/1784-12-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/1784-13-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/1784-14-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/1784-15-0x0000000000400000-0x0000000000648000-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-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	kat42E5.tmp

Executes dropped EXE 1 IoCs

pid	Process
1784	kat42E5.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 640 set thread context of 1784	640	5cebadc0cb63658ed8782abb8825847bca340fa759a4cf987efe66fc912ad23c.exe	80

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	kat42E5.tmp
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	kat42E5.tmp

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
1900	timeout.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1784	kat42E5.tmp
1784	kat42E5.tmp
1784	kat42E5.tmp
1784	kat42E5.tmp
1784	kat42E5.tmp
1784	kat42E5.tmp

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 640 wrote to memory of 1784	640	5cebadc0cb63658ed8782abb8825847bca340fa759a4cf987efe66fc912ad23c.exe	80
PID 640 wrote to memory of 1784	640	5cebadc0cb63658ed8782abb8825847bca340fa759a4cf987efe66fc912ad23c.exe	80
PID 640 wrote to memory of 1784	640	5cebadc0cb63658ed8782abb8825847bca340fa759a4cf987efe66fc912ad23c.exe	80
PID 640 wrote to memory of 1784	640	5cebadc0cb63658ed8782abb8825847bca340fa759a4cf987efe66fc912ad23c.exe	80
PID 640 wrote to memory of 1784	640	5cebadc0cb63658ed8782abb8825847bca340fa759a4cf987efe66fc912ad23c.exe	80
PID 640 wrote to memory of 1784	640	5cebadc0cb63658ed8782abb8825847bca340fa759a4cf987efe66fc912ad23c.exe	80
PID 640 wrote to memory of 1784	640	5cebadc0cb63658ed8782abb8825847bca340fa759a4cf987efe66fc912ad23c.exe	80
PID 640 wrote to memory of 1784	640	5cebadc0cb63658ed8782abb8825847bca340fa759a4cf987efe66fc912ad23c.exe	80
PID 1784 wrote to memory of 1484	1784	kat42E5.tmp	82
PID 1784 wrote to memory of 1484	1784	kat42E5.tmp	82
PID 1784 wrote to memory of 1484	1784	kat42E5.tmp	82
PID 1484 wrote to memory of 1900	1484	cmd.exe	84
PID 1484 wrote to memory of 1900	1484	cmd.exe	84
PID 1484 wrote to memory of 1900	1484	cmd.exe	84

C:\Users\Admin\AppData\Local\Temp\5cebadc0cb63658ed8782abb8825847bca340fa759a4cf987efe66fc912ad23c.exe
"C:\Users\Admin\AppData\Local\Temp\5cebadc0cb63658ed8782abb8825847bca340fa759a4cf987efe66fc912ad23c.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:640
- C:\Users\Admin\AppData\Local\Temp\kat42E5.tmp
  C:\Users\Admin\AppData\Local\Temp\kat42E5.tmp
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1784
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat42E5.tmp" & rd /s /q "C:\ProgramData\EBGIDGCAFCBK" & exit
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1484
  - - C:\Windows\SysWOW64\timeout.exe
      timeout /t 10
      4⤵
      Delays execution with timeout.exe
      PID:1900

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

kat42E5.tmp

Path C:\Users\Admin\AppData\Local\Temp\kat42E5.tmp
Size 861KB
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
SSDEEP 24576:o0ESdQpglO1CxDyawn27h+9hrlgKQY9SGcZwCdTp:o0RIglO1CuL9VNcaCd9
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/640-0-0x00000000023C0000-0x00000000023C1000-memory.dmp

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memory/640-2-0x0000000004160000-0x0000000004270000-memory.dmp

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memory/640-9-0x0000000000400000-0x0000000000624000-memory.dmp

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memory/1784-4-0x0000000000400000-0x0000000000648000-memory.dmp

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memory/1784-8-0x0000000000400000-0x0000000000648000-memory.dmp

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memory/1784-10-0x0000000000400000-0x0000000000648000-memory.dmp

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memory/1784-11-0x0000000000400000-0x0000000000648000-memory.dmp

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memory/1784-12-0x0000000000400000-0x0000000000648000-memory.dmp

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memory/1784-13-0x0000000000400000-0x0000000000648000-memory.dmp

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memory/1784-14-0x0000000000400000-0x0000000000648000-memory.dmp

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memory/1784-15-0x0000000000400000-0x0000000000648000-memory.dmp

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