stealc | 412168664881541e51a69b5117f72d4d4ce22f9dc0f50ec565e851bae44d9c6b

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
01-07-2024 08:05

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General

Target

412168664881541e51a69b5117f72d4d4ce22f9dc0f50ec565e851bae44d9c6b.exe
Size

2.2MB
MD5

614f35c052b5660f09ab728a9beffcb1
SHA1

e1c8e37373f8d3ae1338bfc338b77e2668fa6464
SHA256

412168664881541e51a69b5117f72d4d4ce22f9dc0f50ec565e851bae44d9c6b
SHA512

6f0c131be569c1111bffd7615e1b8a31d14d0105ffac3bfa2f9aa7079881edf143a164b35d8428c0b7327b4a4b8fcacc975451841348b3ff6bc3b102fb65b542
SSDEEP

24576:Uc0PyhhGkCI1wUL24jtYkYGbawg757CgXueAgXryU2MZQti1u8LnsDJY6WpEYGYG:UJ0hsA91MP121tuuIeNHYGY0LzjsJxK

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/4260-2-0x00000000040B0000-0x00000000041C3000-memory.dmp	family_vidar_v7
behavioral2/memory/4592-8-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4592-4-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4592-10-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4592-11-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4592-12-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4592-13-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4592-14-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4592-17-0x0000000000400000-0x0000000000648000-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:

kat87DD.tmp

pid process

4592 kat87DD.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:

412168664881541e51a69b5117f72d4d4ce22f9dc0f50ec565e851bae44d9c6b.exe

description pid process target process

PID 4260 set thread context of 4592 4260 412168664881541e51a69b5117f72d4d4ce22f9dc0f50ec565e851bae44d9c6b.exe kat87DD.tmp
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
4592	kat87DD.tmp

description	pid	process	target process
PID 4260 set thread context of 4592	4260	412168664881541e51a69b5117f72d4d4ce22f9dc0f50ec565e851bae44d9c6b.exe	kat87DD.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:

kat87DD.tmp

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	kat87DD.tmp
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	kat87DD.tmp

Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

3796 timeout.exe
Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

kat87DD.tmp

pid process

4592 kat87DD.tmp
4592 kat87DD.tmp
4592 kat87DD.tmp
4592 kat87DD.tmp
4592 kat87DD.tmp
4592 kat87DD.tmp

pid	process
3796	timeout.exe

pid	process
4592	kat87DD.tmp
4592	kat87DD.tmp
4592	kat87DD.tmp
4592	kat87DD.tmp
4592	kat87DD.tmp
4592	kat87DD.tmp

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

412168664881541e51a69b5117f72d4d4ce22f9dc0f50ec565e851bae44d9c6b.exekat87DD.tmpcmd.exe

description	pid	process	target process
PID 4260 wrote to memory of 4592	4260	412168664881541e51a69b5117f72d4d4ce22f9dc0f50ec565e851bae44d9c6b.exe	kat87DD.tmp
PID 4260 wrote to memory of 4592	4260	412168664881541e51a69b5117f72d4d4ce22f9dc0f50ec565e851bae44d9c6b.exe	kat87DD.tmp
PID 4260 wrote to memory of 4592	4260	412168664881541e51a69b5117f72d4d4ce22f9dc0f50ec565e851bae44d9c6b.exe	kat87DD.tmp
PID 4260 wrote to memory of 4592	4260	412168664881541e51a69b5117f72d4d4ce22f9dc0f50ec565e851bae44d9c6b.exe	kat87DD.tmp
PID 4260 wrote to memory of 4592	4260	412168664881541e51a69b5117f72d4d4ce22f9dc0f50ec565e851bae44d9c6b.exe	kat87DD.tmp
PID 4260 wrote to memory of 4592	4260	412168664881541e51a69b5117f72d4d4ce22f9dc0f50ec565e851bae44d9c6b.exe	kat87DD.tmp
PID 4260 wrote to memory of 4592	4260	412168664881541e51a69b5117f72d4d4ce22f9dc0f50ec565e851bae44d9c6b.exe	kat87DD.tmp
PID 4260 wrote to memory of 4592	4260	412168664881541e51a69b5117f72d4d4ce22f9dc0f50ec565e851bae44d9c6b.exe	kat87DD.tmp
PID 4592 wrote to memory of 2296	4592	kat87DD.tmp	cmd.exe
PID 4592 wrote to memory of 2296	4592	kat87DD.tmp	cmd.exe
PID 4592 wrote to memory of 2296	4592	kat87DD.tmp	cmd.exe
PID 2296 wrote to memory of 3796	2296	cmd.exe	timeout.exe
PID 2296 wrote to memory of 3796	2296	cmd.exe	timeout.exe
PID 2296 wrote to memory of 3796	2296	cmd.exe	timeout.exe

C:\Users\Admin\AppData\Local\Temp\412168664881541e51a69b5117f72d4d4ce22f9dc0f50ec565e851bae44d9c6b.exe
"C:\Users\Admin\AppData\Local\Temp\412168664881541e51a69b5117f72d4d4ce22f9dc0f50ec565e851bae44d9c6b.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4260

C:\Users\Admin\AppData\Local\Temp\kat87DD.tmp
C:\Users\Admin\AppData\Local\Temp\kat87DD.tmp
2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4592

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat87DD.tmp" & rd /s /q "C:\ProgramData\DBFCBGCGIJKJ" & exit
3⤵
- Suspicious use of WriteProcessMemory
PID:2296

C:\Windows\SysWOW64\timeout.exe
timeout /t 10
4⤵
- Delays execution with timeout.exe
PID:3796

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\kat87DD.tmp
Filesize
861KB

MD5
66064dbdb70a5eb15ebf3bf65aba254b

SHA1
0284fd320f99f62aca800fb1251eff4c31ec4ed7

SHA256
6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795

SHA512
b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

Download Submit
memory/4260-0-0x00000000023A0000-0x00000000023A1000-memory.dmp

Filesize
4KB

Download
memory/4260-2-0x00000000040B0000-0x00000000041C3000-memory.dmp

Filesize
1.1MB

Download
memory/4260-9-0x0000000000400000-0x0000000000641000-memory.dmp

Filesize
2.3MB

Download
memory/4592-8-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4592-4-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4592-10-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4592-11-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4592-12-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4592-13-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4592-14-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4592-17-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download