stealc | 7e2ff81c09def06621b9f3255214d80775a2b015755ce94d9fa72ebe2ec030cc

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 23:11

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General

Target

7e2ff81c09def06621b9f3255214d80775a2b015755ce94d9fa72ebe2ec030cc.exe
Size

2.2MB
MD5

7c9a133ae5c05b4206c8b66c2e4b6f04
SHA1

636a9b518ff200b1a51d8ec8b948298d706c353a
SHA256

7e2ff81c09def06621b9f3255214d80775a2b015755ce94d9fa72ebe2ec030cc
SHA512

e72debc55e25ce4bf5520100d6f130440aec89c1717b66af0ba3a3199568aeeef79cd9ae50f5f17d36486ec390af2b075fcd41dedbbd176c6e9bda0030e31d82
SSDEEP

24576:Uc0PyhhGkCI1wUL24jtYkYGbawg757CgXueAgXjuU2MZQti1u8LnsDJY6WpEYGYG:UJ0hsA91MPp21tuuIeNHYGY0LzjsJxK

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/244-1-0x00000000041C0000-0x00000000042D3000-memory.dmp	family_vidar_v7
behavioral2/memory/232-10-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/232-8-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/232-4-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/232-11-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/232-12-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/232-13-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/232-14-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/232-15-0x0000000000400000-0x0000000000648000-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:

kat4E4F.tmp

pid process

232 kat4E4F.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:

7e2ff81c09def06621b9f3255214d80775a2b015755ce94d9fa72ebe2ec030cc.exe

description pid process target process

PID 244 set thread context of 232 244 7e2ff81c09def06621b9f3255214d80775a2b015755ce94d9fa72ebe2ec030cc.exe kat4E4F.tmp
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
232	kat4E4F.tmp

description	pid	process	target process
PID 244 set thread context of 232	244	7e2ff81c09def06621b9f3255214d80775a2b015755ce94d9fa72ebe2ec030cc.exe	kat4E4F.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:

kat4E4F.tmp

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	kat4E4F.tmp
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	kat4E4F.tmp

Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

4696 timeout.exe
Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

kat4E4F.tmp

pid process

232 kat4E4F.tmp
232 kat4E4F.tmp
232 kat4E4F.tmp
232 kat4E4F.tmp
232 kat4E4F.tmp
232 kat4E4F.tmp

pid	process
4696	timeout.exe

pid	process
232	kat4E4F.tmp
232	kat4E4F.tmp
232	kat4E4F.tmp
232	kat4E4F.tmp
232	kat4E4F.tmp
232	kat4E4F.tmp

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

7e2ff81c09def06621b9f3255214d80775a2b015755ce94d9fa72ebe2ec030cc.exekat4E4F.tmpcmd.exe

description	pid	process	target process
PID 244 wrote to memory of 232	244	7e2ff81c09def06621b9f3255214d80775a2b015755ce94d9fa72ebe2ec030cc.exe	kat4E4F.tmp
PID 244 wrote to memory of 232	244	7e2ff81c09def06621b9f3255214d80775a2b015755ce94d9fa72ebe2ec030cc.exe	kat4E4F.tmp
PID 244 wrote to memory of 232	244	7e2ff81c09def06621b9f3255214d80775a2b015755ce94d9fa72ebe2ec030cc.exe	kat4E4F.tmp
PID 244 wrote to memory of 232	244	7e2ff81c09def06621b9f3255214d80775a2b015755ce94d9fa72ebe2ec030cc.exe	kat4E4F.tmp
PID 244 wrote to memory of 232	244	7e2ff81c09def06621b9f3255214d80775a2b015755ce94d9fa72ebe2ec030cc.exe	kat4E4F.tmp
PID 244 wrote to memory of 232	244	7e2ff81c09def06621b9f3255214d80775a2b015755ce94d9fa72ebe2ec030cc.exe	kat4E4F.tmp
PID 244 wrote to memory of 232	244	7e2ff81c09def06621b9f3255214d80775a2b015755ce94d9fa72ebe2ec030cc.exe	kat4E4F.tmp
PID 244 wrote to memory of 232	244	7e2ff81c09def06621b9f3255214d80775a2b015755ce94d9fa72ebe2ec030cc.exe	kat4E4F.tmp
PID 232 wrote to memory of 2160	232	kat4E4F.tmp	cmd.exe
PID 232 wrote to memory of 2160	232	kat4E4F.tmp	cmd.exe
PID 232 wrote to memory of 2160	232	kat4E4F.tmp	cmd.exe
PID 2160 wrote to memory of 4696	2160	cmd.exe	timeout.exe
PID 2160 wrote to memory of 4696	2160	cmd.exe	timeout.exe
PID 2160 wrote to memory of 4696	2160	cmd.exe	timeout.exe

C:\Users\Admin\AppData\Local\Temp\7e2ff81c09def06621b9f3255214d80775a2b015755ce94d9fa72ebe2ec030cc.exe
"C:\Users\Admin\AppData\Local\Temp\7e2ff81c09def06621b9f3255214d80775a2b015755ce94d9fa72ebe2ec030cc.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:244

C:\Users\Admin\AppData\Local\Temp\kat4E4F.tmp
C:\Users\Admin\AppData\Local\Temp\kat4E4F.tmp
2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:232

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat4E4F.tmp" & rd /s /q "C:\ProgramData\HIIIIEGHDGDB" & exit
3⤵
- Suspicious use of WriteProcessMemory
PID:2160

C:\Windows\SysWOW64\timeout.exe
timeout /t 10
4⤵
- Delays execution with timeout.exe
PID:4696

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\kat4E4F.tmp
Filesize
861KB

MD5
66064dbdb70a5eb15ebf3bf65aba254b

SHA1
0284fd320f99f62aca800fb1251eff4c31ec4ed7

SHA256
6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795

SHA512
b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

Download Submit
memory/232-10-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/232-8-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/232-4-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/232-11-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/232-12-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/232-13-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/232-14-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/232-15-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/244-0-0x00000000025F0000-0x00000000025F1000-memory.dmp

Filesize
4KB

Download
memory/244-1-0x00000000041C0000-0x00000000042D3000-memory.dmp

Filesize
1.1MB

Download
memory/244-9-0x0000000000400000-0x0000000000641000-memory.dmp

Filesize
2.3MB

Download