stealc | 63c3aff0ea7d4d98bc48d454fc9555eef2889484b789a19dff9916aebd1dd112

Analysis

max time kernel
64s
max time network
126s
platform
windows11-21h2_x64
resource
win11-20240611-en
resource tags

arch:x64arch:x86image:win11-20240611-enlocale:en-usos:windows11-21h2-x64system
submitted
01-07-2024 04:22

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General

Target

63c3aff0ea7d4d98bc48d454fc9555eef2889484b789a19dff9916aebd1dd112.exe
Size

2.2MB
MD5

900232062eeb0ddf165752bced356cb2
SHA1

cd50578d1d35f65bad2c87cc6d3a4b94aa3e9b7c
SHA256

63c3aff0ea7d4d98bc48d454fc9555eef2889484b789a19dff9916aebd1dd112
SHA512

8c4435594554b2bab2a19c4ec74d211d77316c04a5c21f33150f5273f6a2e18d9a1be40087a61352e132cecba56753aafb4d9fb3f508a3b34edabd3b89d8e7f1
SSDEEP

24576:Uc0PyhhGkCI1wUL24jtYkYGbawg757CgXueAgXPtU2MZQti1u8LnsDJY6WpEYGYG:UJ0hsA91MPa21tuuIeNHYGY0LzjsJxK

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 14 IoCs

stealer

Processes:

resource	yara_rule
behavioral2/memory/4472-2-0x00000000041E0000-0x00000000042F3000-memory.dmp	family_vidar_v7
behavioral2/memory/4248-4-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4248-8-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4248-9-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4248-24-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4248-25-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4248-42-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4248-43-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4248-59-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4248-60-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4248-71-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4248-72-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4248-73-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4248-74-0x0000000000400000-0x0000000000648000-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:

kat71DF.tmp

pid process

4248 kat71DF.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
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

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:

63c3aff0ea7d4d98bc48d454fc9555eef2889484b789a19dff9916aebd1dd112.exe

description pid process target process

PID 4472 set thread context of 4248 4472 63c3aff0ea7d4d98bc48d454fc9555eef2889484b789a19dff9916aebd1dd112.exe kat71DF.tmp
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
4248	kat71DF.tmp

description	pid	process	target process
PID 4472 set thread context of 4248	4472	63c3aff0ea7d4d98bc48d454fc9555eef2889484b789a19dff9916aebd1dd112.exe	kat71DF.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:

kat71DF.tmp

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	kat71DF.tmp
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	kat71DF.tmp

Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

3772 timeout.exe
Suspicious behavior: EnumeratesProcesses 8 IoCs

Processes:

kat71DF.tmp

pid process

4248 kat71DF.tmp
4248 kat71DF.tmp
4248 kat71DF.tmp
4248 kat71DF.tmp
4248 kat71DF.tmp
4248 kat71DF.tmp
4248 kat71DF.tmp
4248 kat71DF.tmp

pid	process
3772	timeout.exe

pid	process
4248	kat71DF.tmp
4248	kat71DF.tmp
4248	kat71DF.tmp
4248	kat71DF.tmp
4248	kat71DF.tmp
4248	kat71DF.tmp
4248	kat71DF.tmp
4248	kat71DF.tmp

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

63c3aff0ea7d4d98bc48d454fc9555eef2889484b789a19dff9916aebd1dd112.exekat71DF.tmpcmd.exe

description	pid	process	target process
PID 4472 wrote to memory of 4248	4472	63c3aff0ea7d4d98bc48d454fc9555eef2889484b789a19dff9916aebd1dd112.exe	kat71DF.tmp
PID 4472 wrote to memory of 4248	4472	63c3aff0ea7d4d98bc48d454fc9555eef2889484b789a19dff9916aebd1dd112.exe	kat71DF.tmp
PID 4472 wrote to memory of 4248	4472	63c3aff0ea7d4d98bc48d454fc9555eef2889484b789a19dff9916aebd1dd112.exe	kat71DF.tmp
PID 4472 wrote to memory of 4248	4472	63c3aff0ea7d4d98bc48d454fc9555eef2889484b789a19dff9916aebd1dd112.exe	kat71DF.tmp
PID 4472 wrote to memory of 4248	4472	63c3aff0ea7d4d98bc48d454fc9555eef2889484b789a19dff9916aebd1dd112.exe	kat71DF.tmp
PID 4472 wrote to memory of 4248	4472	63c3aff0ea7d4d98bc48d454fc9555eef2889484b789a19dff9916aebd1dd112.exe	kat71DF.tmp
PID 4472 wrote to memory of 4248	4472	63c3aff0ea7d4d98bc48d454fc9555eef2889484b789a19dff9916aebd1dd112.exe	kat71DF.tmp
PID 4472 wrote to memory of 4248	4472	63c3aff0ea7d4d98bc48d454fc9555eef2889484b789a19dff9916aebd1dd112.exe	kat71DF.tmp
PID 4248 wrote to memory of 252	4248	kat71DF.tmp	cmd.exe
PID 4248 wrote to memory of 252	4248	kat71DF.tmp	cmd.exe
PID 4248 wrote to memory of 252	4248	kat71DF.tmp	cmd.exe
PID 252 wrote to memory of 3772	252	cmd.exe	timeout.exe
PID 252 wrote to memory of 3772	252	cmd.exe	timeout.exe
PID 252 wrote to memory of 3772	252	cmd.exe	timeout.exe

C:\Users\Admin\AppData\Local\Temp\63c3aff0ea7d4d98bc48d454fc9555eef2889484b789a19dff9916aebd1dd112.exe
"C:\Users\Admin\AppData\Local\Temp\63c3aff0ea7d4d98bc48d454fc9555eef2889484b789a19dff9916aebd1dd112.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4472

C:\Users\Admin\AppData\Local\Temp\kat71DF.tmp
C:\Users\Admin\AppData\Local\Temp\kat71DF.tmp
2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4248

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat71DF.tmp" & rd /s /q "C:\ProgramData\CAFBGDHCBAEH" & exit
3⤵
- Suspicious use of WriteProcessMemory
PID:252

C:\Windows\SysWOW64\timeout.exe
timeout /t 10
4⤵
- Delays execution with timeout.exe
PID:3772

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\kat71DF.tmp
Filesize
861KB

MD5
66064dbdb70a5eb15ebf3bf65aba254b

SHA1
0284fd320f99f62aca800fb1251eff4c31ec4ed7

SHA256
6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795

SHA512
b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

Download Submit
memory/4248-25-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4248-71-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4248-27-0x0000000022770000-0x00000000229CF000-memory.dmp

Filesize
2.4MB

Download
memory/4248-74-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4248-42-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4248-73-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4248-24-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4248-43-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4248-8-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4248-9-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4248-72-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4248-59-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4248-60-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4248-4-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4472-0-0x00000000024E0000-0x00000000024E1000-memory.dmp

Filesize
4KB

Download
memory/4472-10-0x0000000000400000-0x0000000000641000-memory.dmp

Filesize
2.3MB

Download
memory/4472-2-0x00000000041E0000-0x00000000042F3000-memory.dmp

Filesize
1.1MB

Download