stealc | d61e97e334d764167169b00c4f3ef95d5bfbc0c07785dfa5e9e607d1ef672d49

Analysis

max time kernel
146s
max time network
152s
platform
windows11-21h2_x64
resource
win11-20240508-en
resource tags

arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system
submitted
01-07-2024 09:18

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General

Target

d61e97e334d764167169b00c4f3ef95d5bfbc0c07785dfa5e9e607d1ef672d49.exe
Size

2.2MB
MD5

b596726c6cfea47888b2b8e17a619c36
SHA1

4b9ef2675dc3f6226384bd6ce5250165fab8ba6d
SHA256

d61e97e334d764167169b00c4f3ef95d5bfbc0c07785dfa5e9e607d1ef672d49
SHA512

725b5d8b1049c777b21de625d6f935fae907516e31174cd91aba82a863fd69d3e884225c47c845a31ba9fbf97726f988de212f8f5ceda65e7a3e787043c728c4
SSDEEP

24576:Uc0PyhhGkCI1wUL24jtYkYGbawg757CgXueAgX3SU2MZQti1u8LnsDJY6WpEYGYG:UJ0hsA91MPJ21tuuIeNHYGY0LzjsJxK

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/4616-8-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4616-10-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4616-4-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/2936-2-0x00000000041B0000-0x00000000042C3000-memory.dmp	family_vidar_v7
behavioral2/memory/4616-11-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4616-12-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4616-13-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4616-14-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4616-15-0x0000000000400000-0x0000000000648000-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:

kat7F23.tmp

pid process

4616 kat7F23.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:

d61e97e334d764167169b00c4f3ef95d5bfbc0c07785dfa5e9e607d1ef672d49.exe

description pid process target process

PID 2936 set thread context of 4616 2936 d61e97e334d764167169b00c4f3ef95d5bfbc0c07785dfa5e9e607d1ef672d49.exe kat7F23.tmp
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
4616	kat7F23.tmp

description	pid	process	target process
PID 2936 set thread context of 4616	2936	d61e97e334d764167169b00c4f3ef95d5bfbc0c07785dfa5e9e607d1ef672d49.exe	kat7F23.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:

kat7F23.tmp

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	kat7F23.tmp
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	kat7F23.tmp

Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

1992 timeout.exe
Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

kat7F23.tmp

pid process

4616 kat7F23.tmp
4616 kat7F23.tmp
4616 kat7F23.tmp
4616 kat7F23.tmp
4616 kat7F23.tmp
4616 kat7F23.tmp

pid	process
1992	timeout.exe

pid	process
4616	kat7F23.tmp
4616	kat7F23.tmp
4616	kat7F23.tmp
4616	kat7F23.tmp
4616	kat7F23.tmp
4616	kat7F23.tmp

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

d61e97e334d764167169b00c4f3ef95d5bfbc0c07785dfa5e9e607d1ef672d49.exekat7F23.tmpcmd.exe

description	pid	process	target process
PID 2936 wrote to memory of 4616	2936	d61e97e334d764167169b00c4f3ef95d5bfbc0c07785dfa5e9e607d1ef672d49.exe	kat7F23.tmp
PID 2936 wrote to memory of 4616	2936	d61e97e334d764167169b00c4f3ef95d5bfbc0c07785dfa5e9e607d1ef672d49.exe	kat7F23.tmp
PID 2936 wrote to memory of 4616	2936	d61e97e334d764167169b00c4f3ef95d5bfbc0c07785dfa5e9e607d1ef672d49.exe	kat7F23.tmp
PID 2936 wrote to memory of 4616	2936	d61e97e334d764167169b00c4f3ef95d5bfbc0c07785dfa5e9e607d1ef672d49.exe	kat7F23.tmp
PID 2936 wrote to memory of 4616	2936	d61e97e334d764167169b00c4f3ef95d5bfbc0c07785dfa5e9e607d1ef672d49.exe	kat7F23.tmp
PID 2936 wrote to memory of 4616	2936	d61e97e334d764167169b00c4f3ef95d5bfbc0c07785dfa5e9e607d1ef672d49.exe	kat7F23.tmp
PID 2936 wrote to memory of 4616	2936	d61e97e334d764167169b00c4f3ef95d5bfbc0c07785dfa5e9e607d1ef672d49.exe	kat7F23.tmp
PID 2936 wrote to memory of 4616	2936	d61e97e334d764167169b00c4f3ef95d5bfbc0c07785dfa5e9e607d1ef672d49.exe	kat7F23.tmp
PID 4616 wrote to memory of 420	4616	kat7F23.tmp	cmd.exe
PID 4616 wrote to memory of 420	4616	kat7F23.tmp	cmd.exe
PID 4616 wrote to memory of 420	4616	kat7F23.tmp	cmd.exe
PID 420 wrote to memory of 1992	420	cmd.exe	timeout.exe
PID 420 wrote to memory of 1992	420	cmd.exe	timeout.exe
PID 420 wrote to memory of 1992	420	cmd.exe	timeout.exe

C:\Users\Admin\AppData\Local\Temp\d61e97e334d764167169b00c4f3ef95d5bfbc0c07785dfa5e9e607d1ef672d49.exe
"C:\Users\Admin\AppData\Local\Temp\d61e97e334d764167169b00c4f3ef95d5bfbc0c07785dfa5e9e607d1ef672d49.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2936

C:\Users\Admin\AppData\Local\Temp\kat7F23.tmp
C:\Users\Admin\AppData\Local\Temp\kat7F23.tmp
2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4616

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat7F23.tmp" & rd /s /q "C:\ProgramData\FBAAAKFCAFII" & exit
3⤵
- Suspicious use of WriteProcessMemory
PID:420

C:\Windows\SysWOW64\timeout.exe
timeout /t 10
4⤵
- Delays execution with timeout.exe
PID:1992

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\kat7F23.tmp
Filesize
861KB

MD5
66064dbdb70a5eb15ebf3bf65aba254b

SHA1
0284fd320f99f62aca800fb1251eff4c31ec4ed7

SHA256
6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795

SHA512
b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

Download Submit
memory/2936-0-0x00000000026F0000-0x00000000026F1000-memory.dmp

Filesize
4KB

Download
memory/2936-9-0x0000000000400000-0x0000000000641000-memory.dmp

Filesize
2.3MB

Download
memory/2936-2-0x00000000041B0000-0x00000000042C3000-memory.dmp

Filesize
1.1MB

Download
memory/4616-8-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4616-10-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4616-4-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4616-11-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4616-12-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4616-13-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4616-14-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4616-15-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download