stealc | 8228391118e1475949504f7b156f8055e30f3fc6b1b8b8f17c3dc9cc094dd700

Analysis

max time kernel
146s
max time network
150s
platform
windows11-21h2_x64
resource
win11-20240508-en
resource tags

arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system
submitted
30-06-2024 19:38

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General

Target

8228391118e1475949504f7b156f8055e30f3fc6b1b8b8f17c3dc9cc094dd700.exe
Size

2.2MB
MD5

aff8776e8db950502e5b9b9e8f98ee58
SHA1

c5cdb3b8c3b755118775f1861cbe6007b1d948e2
SHA256

8228391118e1475949504f7b156f8055e30f3fc6b1b8b8f17c3dc9cc094dd700
SHA512

3431204f88963198dad7ea88c3f2eca34c43496faa850e1986e8f4f60ab756b7ce9bc88ad4b73d5bcd9fa4fe3a0aaa2fcc124de94e9770522521c10db8ada709
SSDEEP

24576:Uc0PyhhGkCI1wUL24jtYkYGbawg757CgXueAgXD6U2MZQti1u8LnsDJY6WpEYGYG:UJ0hsA91MPl21tuuIeNHYGY0LzjsJxK

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

Processes:

resource	yara_rule
behavioral2/memory/3112-1-0x0000000004050000-0x0000000004163000-memory.dmp	family_vidar_v7
behavioral2/memory/2732-8-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/2732-10-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/2732-4-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/2732-11-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/2732-12-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/2732-13-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/2732-14-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/2732-15-0x0000000000400000-0x0000000000648000-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
Executes dropped EXE 1 IoCs

Processes:

kat734B.tmp

pid process

2732 kat734B.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

Processes:

8228391118e1475949504f7b156f8055e30f3fc6b1b8b8f17c3dc9cc094dd700.exe

description pid process target process

PID 3112 set thread context of 2732 3112 8228391118e1475949504f7b156f8055e30f3fc6b1b8b8f17c3dc9cc094dd700.exe kat734B.tmp
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2732	kat734B.tmp

description	pid	process	target process
PID 3112 set thread context of 2732	3112	8228391118e1475949504f7b156f8055e30f3fc6b1b8b8f17c3dc9cc094dd700.exe	kat734B.tmp

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

Processes:

kat734B.tmp

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	kat734B.tmp
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	kat734B.tmp

Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

1580 timeout.exe
Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

kat734B.tmp

pid process

2732 kat734B.tmp
2732 kat734B.tmp
2732 kat734B.tmp
2732 kat734B.tmp
2732 kat734B.tmp
2732 kat734B.tmp

pid	process
1580	timeout.exe

pid	process
2732	kat734B.tmp
2732	kat734B.tmp
2732	kat734B.tmp
2732	kat734B.tmp
2732	kat734B.tmp
2732	kat734B.tmp

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

8228391118e1475949504f7b156f8055e30f3fc6b1b8b8f17c3dc9cc094dd700.exekat734B.tmpcmd.exe

description	pid	process	target process
PID 3112 wrote to memory of 2732	3112	8228391118e1475949504f7b156f8055e30f3fc6b1b8b8f17c3dc9cc094dd700.exe	kat734B.tmp
PID 3112 wrote to memory of 2732	3112	8228391118e1475949504f7b156f8055e30f3fc6b1b8b8f17c3dc9cc094dd700.exe	kat734B.tmp
PID 3112 wrote to memory of 2732	3112	8228391118e1475949504f7b156f8055e30f3fc6b1b8b8f17c3dc9cc094dd700.exe	kat734B.tmp
PID 3112 wrote to memory of 2732	3112	8228391118e1475949504f7b156f8055e30f3fc6b1b8b8f17c3dc9cc094dd700.exe	kat734B.tmp
PID 3112 wrote to memory of 2732	3112	8228391118e1475949504f7b156f8055e30f3fc6b1b8b8f17c3dc9cc094dd700.exe	kat734B.tmp
PID 3112 wrote to memory of 2732	3112	8228391118e1475949504f7b156f8055e30f3fc6b1b8b8f17c3dc9cc094dd700.exe	kat734B.tmp
PID 3112 wrote to memory of 2732	3112	8228391118e1475949504f7b156f8055e30f3fc6b1b8b8f17c3dc9cc094dd700.exe	kat734B.tmp
PID 3112 wrote to memory of 2732	3112	8228391118e1475949504f7b156f8055e30f3fc6b1b8b8f17c3dc9cc094dd700.exe	kat734B.tmp
PID 2732 wrote to memory of 1948	2732	kat734B.tmp	cmd.exe
PID 2732 wrote to memory of 1948	2732	kat734B.tmp	cmd.exe
PID 2732 wrote to memory of 1948	2732	kat734B.tmp	cmd.exe
PID 1948 wrote to memory of 1580	1948	cmd.exe	timeout.exe
PID 1948 wrote to memory of 1580	1948	cmd.exe	timeout.exe
PID 1948 wrote to memory of 1580	1948	cmd.exe	timeout.exe

C:\Users\Admin\AppData\Local\Temp\8228391118e1475949504f7b156f8055e30f3fc6b1b8b8f17c3dc9cc094dd700.exe
"C:\Users\Admin\AppData\Local\Temp\8228391118e1475949504f7b156f8055e30f3fc6b1b8b8f17c3dc9cc094dd700.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3112

C:\Users\Admin\AppData\Local\Temp\kat734B.tmp
C:\Users\Admin\AppData\Local\Temp\kat734B.tmp
2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2732

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat734B.tmp" & rd /s /q "C:\ProgramData\HJJEGIEHIJKK" & exit
3⤵
- Suspicious use of WriteProcessMemory
PID:1948

C:\Windows\SysWOW64\timeout.exe
timeout /t 10
4⤵
- Delays execution with timeout.exe
PID:1580

Network

MITRE ATT&CK Matrix ATT&CK v13

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

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\kat734B.tmp
Filesize
861KB

MD5
66064dbdb70a5eb15ebf3bf65aba254b

SHA1
0284fd320f99f62aca800fb1251eff4c31ec4ed7

SHA256
6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795

SHA512
b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

Download Submit
memory/2732-8-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2732-10-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2732-4-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2732-11-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2732-12-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2732-13-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2732-14-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2732-15-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/3112-0-0x00000000025B0000-0x00000000025B1000-memory.dmp

Filesize
4KB

Download
memory/3112-1-0x0000000004050000-0x0000000004163000-memory.dmp

Filesize
1.1MB

Download
memory/3112-9-0x0000000000400000-0x0000000000641000-memory.dmp

Filesize
2.3MB

Download