stealc | d7161d5bfebf3d6c77ef73c5c14608cca41d85870ab3f8fe6058e13efe988d4e

Analysis

max time kernel
92s
max time network
127s
platform
windows11-21h2_x64
resource
win11-20240419-en
resource tags

arch:x64arch:x86image:win11-20240419-enlocale:en-usos:windows11-21h2-x64system
submitted
01-07-2024 04:43

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General

Target

d7161d5bfebf3d6c77ef73c5c14608cca41d85870ab3f8fe6058e13efe988d4e.exe
Size

2.2MB
MD5

6629a70398979c9b6f60a9bc304585a8
SHA1

7d1d3c963c041039d3a120f7e89b3fd64a396cd9
SHA256

d7161d5bfebf3d6c77ef73c5c14608cca41d85870ab3f8fe6058e13efe988d4e
SHA512

23872c3e3483956523d75d27011c72a743f9dcc061f04ae2ee7fbc1a9cc89973cd4fb5e2d1d06b7eaceb943447beedb33ca157754eb943dbb5f3a9174d67342c
SSDEEP

24576:Uc0PyhhGkCI1wUL24jtYkYGbawg757CgXueAgX7/U2MZQti1u8LnsDJY6WpEYGYG:UJ0hsA91MPI21tuuIeNHYGY0LzjsJxK

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 13 IoCs

stealer

Processes:

resource	yara_rule
behavioral2/memory/2440-2-0x0000000004170000-0x0000000004283000-memory.dmp	family_vidar_v7
behavioral2/memory/4332-8-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4332-10-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4332-4-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4332-24-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4332-25-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4332-42-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4332-43-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4332-59-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4332-60-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4332-71-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4332-72-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4332-75-0x0000000000400000-0x0000000000648000-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
Downloads MZ/PE file
Executes dropped EXE 1 IoCs

Processes:

kat4B41.tmp

pid process

4332 kat4B41.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:

d7161d5bfebf3d6c77ef73c5c14608cca41d85870ab3f8fe6058e13efe988d4e.exe

description pid process target process

PID 2440 set thread context of 4332 2440 d7161d5bfebf3d6c77ef73c5c14608cca41d85870ab3f8fe6058e13efe988d4e.exe kat4B41.tmp
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
4332	kat4B41.tmp

description	pid	process	target process
PID 2440 set thread context of 4332	2440	d7161d5bfebf3d6c77ef73c5c14608cca41d85870ab3f8fe6058e13efe988d4e.exe	kat4B41.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:

kat4B41.tmp

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	kat4B41.tmp
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	kat4B41.tmp

Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

2484 timeout.exe
Suspicious behavior: EnumeratesProcesses 8 IoCs

Processes:

kat4B41.tmp

pid process

4332 kat4B41.tmp
4332 kat4B41.tmp
4332 kat4B41.tmp
4332 kat4B41.tmp
4332 kat4B41.tmp
4332 kat4B41.tmp
4332 kat4B41.tmp
4332 kat4B41.tmp

pid	process
2484	timeout.exe

pid	process
4332	kat4B41.tmp
4332	kat4B41.tmp
4332	kat4B41.tmp
4332	kat4B41.tmp
4332	kat4B41.tmp
4332	kat4B41.tmp
4332	kat4B41.tmp
4332	kat4B41.tmp

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

d7161d5bfebf3d6c77ef73c5c14608cca41d85870ab3f8fe6058e13efe988d4e.exekat4B41.tmpcmd.exe

description	pid	process	target process
PID 2440 wrote to memory of 4332	2440	d7161d5bfebf3d6c77ef73c5c14608cca41d85870ab3f8fe6058e13efe988d4e.exe	kat4B41.tmp
PID 2440 wrote to memory of 4332	2440	d7161d5bfebf3d6c77ef73c5c14608cca41d85870ab3f8fe6058e13efe988d4e.exe	kat4B41.tmp
PID 2440 wrote to memory of 4332	2440	d7161d5bfebf3d6c77ef73c5c14608cca41d85870ab3f8fe6058e13efe988d4e.exe	kat4B41.tmp
PID 2440 wrote to memory of 4332	2440	d7161d5bfebf3d6c77ef73c5c14608cca41d85870ab3f8fe6058e13efe988d4e.exe	kat4B41.tmp
PID 2440 wrote to memory of 4332	2440	d7161d5bfebf3d6c77ef73c5c14608cca41d85870ab3f8fe6058e13efe988d4e.exe	kat4B41.tmp
PID 2440 wrote to memory of 4332	2440	d7161d5bfebf3d6c77ef73c5c14608cca41d85870ab3f8fe6058e13efe988d4e.exe	kat4B41.tmp
PID 2440 wrote to memory of 4332	2440	d7161d5bfebf3d6c77ef73c5c14608cca41d85870ab3f8fe6058e13efe988d4e.exe	kat4B41.tmp
PID 2440 wrote to memory of 4332	2440	d7161d5bfebf3d6c77ef73c5c14608cca41d85870ab3f8fe6058e13efe988d4e.exe	kat4B41.tmp
PID 4332 wrote to memory of 472	4332	kat4B41.tmp	cmd.exe
PID 4332 wrote to memory of 472	4332	kat4B41.tmp	cmd.exe
PID 4332 wrote to memory of 472	4332	kat4B41.tmp	cmd.exe
PID 472 wrote to memory of 2484	472	cmd.exe	timeout.exe
PID 472 wrote to memory of 2484	472	cmd.exe	timeout.exe
PID 472 wrote to memory of 2484	472	cmd.exe	timeout.exe

C:\Users\Admin\AppData\Local\Temp\d7161d5bfebf3d6c77ef73c5c14608cca41d85870ab3f8fe6058e13efe988d4e.exe
"C:\Users\Admin\AppData\Local\Temp\d7161d5bfebf3d6c77ef73c5c14608cca41d85870ab3f8fe6058e13efe988d4e.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2440

C:\Users\Admin\AppData\Local\Temp\kat4B41.tmp
C:\Users\Admin\AppData\Local\Temp\kat4B41.tmp
2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4332

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat4B41.tmp" & rd /s /q "C:\ProgramData\KKFHJDAEHIEH" & exit
3⤵
- Suspicious use of WriteProcessMemory
PID:472

C:\Windows\SysWOW64\timeout.exe
timeout /t 10
4⤵
- Delays execution with timeout.exe
PID:2484

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\kat4B41.tmp
Filesize
861KB

MD5
66064dbdb70a5eb15ebf3bf65aba254b

SHA1
0284fd320f99f62aca800fb1251eff4c31ec4ed7

SHA256
6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795

SHA512
b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

Download Submit
memory/2440-9-0x0000000000400000-0x0000000000641000-memory.dmp

Filesize
2.3MB

Download
memory/2440-2-0x0000000004170000-0x0000000004283000-memory.dmp

Filesize
1.1MB

Download
memory/2440-0-0x00000000024F0000-0x00000000024F1000-memory.dmp

Filesize
4KB

Download
memory/4332-25-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4332-10-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4332-4-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4332-24-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4332-8-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4332-28-0x000000002D2C0000-0x000000002D51F000-memory.dmp

Filesize
2.4MB

Download
memory/4332-42-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4332-43-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4332-59-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4332-60-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4332-71-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4332-72-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4332-75-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download