stealc | 89102f2b4f9b24b31ff5afe784a598a7002da0c41f7f3c401ec22a5270f5cb1a

Analysis

max time kernel
41s
max time network
51s
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 03:06

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General

Target

89102f2b4f9b24b31ff5afe784a598a7002da0c41f7f3c401ec22a5270f5cb1a.exe
Size

2.2MB
MD5

e03f60136c2ea02cda82a4bd65717ffa
SHA1

cd84f9be110f2a5e0adff2a615293ed70afff12a
SHA256

89102f2b4f9b24b31ff5afe784a598a7002da0c41f7f3c401ec22a5270f5cb1a
SHA512

cda601fa822ae9d73b8fc53164e9772159969ade8fce71f49c97ac1b9ec65ce98525d4d9a6aa6e4a4614169cc31dfe2947cfb9db8b570d50133041a72a2314f4
SSDEEP

24576:Uc0PyhhGkCI1wUL24jtYkYGbawg757CgXueAgXT7U2MZQti1u8LnsDJY6WpEYGYG:UJ0hsA91MPk21tuuIeNHYGY0LzjsJxK

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/2008-2-0x00000000041C0000-0x00000000042D3000-memory.dmp	family_vidar_v7
behavioral2/memory/2340-8-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/2340-4-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/2340-10-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/2340-11-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/2340-12-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/2340-13-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/2340-14-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/2340-15-0x0000000000400000-0x0000000000648000-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:

kat4527.tmp

pid process

2340 kat4527.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:

89102f2b4f9b24b31ff5afe784a598a7002da0c41f7f3c401ec22a5270f5cb1a.exe

description pid process target process

PID 2008 set thread context of 2340 2008 89102f2b4f9b24b31ff5afe784a598a7002da0c41f7f3c401ec22a5270f5cb1a.exe kat4527.tmp
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2340	kat4527.tmp

description	pid	process	target process
PID 2008 set thread context of 2340	2008	89102f2b4f9b24b31ff5afe784a598a7002da0c41f7f3c401ec22a5270f5cb1a.exe	kat4527.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:

kat4527.tmp

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	kat4527.tmp
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	kat4527.tmp

Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

2064 timeout.exe
Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

kat4527.tmp

pid process

2340 kat4527.tmp
2340 kat4527.tmp
2340 kat4527.tmp
2340 kat4527.tmp
2340 kat4527.tmp
2340 kat4527.tmp

pid	process
2064	timeout.exe

pid	process
2340	kat4527.tmp
2340	kat4527.tmp
2340	kat4527.tmp
2340	kat4527.tmp
2340	kat4527.tmp
2340	kat4527.tmp

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

89102f2b4f9b24b31ff5afe784a598a7002da0c41f7f3c401ec22a5270f5cb1a.exekat4527.tmpcmd.exe

description	pid	process	target process
PID 2008 wrote to memory of 2340	2008	89102f2b4f9b24b31ff5afe784a598a7002da0c41f7f3c401ec22a5270f5cb1a.exe	kat4527.tmp
PID 2008 wrote to memory of 2340	2008	89102f2b4f9b24b31ff5afe784a598a7002da0c41f7f3c401ec22a5270f5cb1a.exe	kat4527.tmp
PID 2008 wrote to memory of 2340	2008	89102f2b4f9b24b31ff5afe784a598a7002da0c41f7f3c401ec22a5270f5cb1a.exe	kat4527.tmp
PID 2008 wrote to memory of 2340	2008	89102f2b4f9b24b31ff5afe784a598a7002da0c41f7f3c401ec22a5270f5cb1a.exe	kat4527.tmp
PID 2008 wrote to memory of 2340	2008	89102f2b4f9b24b31ff5afe784a598a7002da0c41f7f3c401ec22a5270f5cb1a.exe	kat4527.tmp
PID 2008 wrote to memory of 2340	2008	89102f2b4f9b24b31ff5afe784a598a7002da0c41f7f3c401ec22a5270f5cb1a.exe	kat4527.tmp
PID 2008 wrote to memory of 2340	2008	89102f2b4f9b24b31ff5afe784a598a7002da0c41f7f3c401ec22a5270f5cb1a.exe	kat4527.tmp
PID 2008 wrote to memory of 2340	2008	89102f2b4f9b24b31ff5afe784a598a7002da0c41f7f3c401ec22a5270f5cb1a.exe	kat4527.tmp
PID 2340 wrote to memory of 4808	2340	kat4527.tmp	cmd.exe
PID 2340 wrote to memory of 4808	2340	kat4527.tmp	cmd.exe
PID 2340 wrote to memory of 4808	2340	kat4527.tmp	cmd.exe
PID 4808 wrote to memory of 2064	4808	cmd.exe	timeout.exe
PID 4808 wrote to memory of 2064	4808	cmd.exe	timeout.exe
PID 4808 wrote to memory of 2064	4808	cmd.exe	timeout.exe

C:\Users\Admin\AppData\Local\Temp\89102f2b4f9b24b31ff5afe784a598a7002da0c41f7f3c401ec22a5270f5cb1a.exe
"C:\Users\Admin\AppData\Local\Temp\89102f2b4f9b24b31ff5afe784a598a7002da0c41f7f3c401ec22a5270f5cb1a.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2008

C:\Users\Admin\AppData\Local\Temp\kat4527.tmp
C:\Users\Admin\AppData\Local\Temp\kat4527.tmp
2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2340

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat4527.tmp" & rd /s /q "C:\ProgramData\HCGDGIDGIJKK" & exit
3⤵
- Suspicious use of WriteProcessMemory
PID:4808

C:\Windows\SysWOW64\timeout.exe
timeout /t 10
4⤵
- Delays execution with timeout.exe
PID:2064

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\kat4527.tmp
Filesize
861KB

MD5
66064dbdb70a5eb15ebf3bf65aba254b

SHA1
0284fd320f99f62aca800fb1251eff4c31ec4ed7

SHA256
6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795

SHA512
b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

Download Submit
memory/2008-0-0x00000000024E0000-0x00000000024E1000-memory.dmp

Filesize
4KB

Download
memory/2008-2-0x00000000041C0000-0x00000000042D3000-memory.dmp

Filesize
1.1MB

Download
memory/2008-9-0x0000000000400000-0x0000000000641000-memory.dmp

Filesize
2.3MB

Download
memory/2340-8-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2340-4-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2340-10-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2340-11-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2340-12-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2340-13-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2340-14-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2340-15-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download