stealc | aacc6bdfe93b86d8502b11ffab4a08e9b14d7c44e6aa9b31a9aee278d4576fb9

Analysis

max time kernel
4s
max time network
159s
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 03:22

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General

Target

aacc6bdfe93b86d8502b11ffab4a08e9b14d7c44e6aa9b31a9aee278d4576fb9.exe
Size

2.2MB
MD5

b33913c9ba214599ccc1e5806e85b758
SHA1

27e010ad3449ce8c217ebf85cb0cb4b500abe2f5
SHA256

aacc6bdfe93b86d8502b11ffab4a08e9b14d7c44e6aa9b31a9aee278d4576fb9
SHA512

d23b6e6c7ca8bba2048932b1081f9a768c99853b688e8f41db1b73949419d2a2380da0c5558a9e3e09b8599a3101f4bb4dce1abe20ca7d591f596c096bd80838
SSDEEP

24576:Uc0PyhhGkCI1wUL24jtYkYGbawg757CgXueAgXv5U2MZQti1u8LnsDJY6WpEYGYG:UJ0hsA91MP+21tuuIeNHYGY0LzjsJxK

Score

10^/10

stealc vidar 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/4376-10-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4376-8-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4376-4-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4656-1-0x0000000004180000-0x0000000004293000-memory.dmp	family_vidar_v7
behavioral2/memory/4376-24-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4376-25-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4376-42-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4376-43-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4376-59-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4376-60-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4376-71-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4376-72-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4376-73-0x0000000000400000-0x0000000000648000-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:

kat9E24.tmp

pid process

4376 kat9E24.tmp
Suspicious use of SetThreadContext 1 IoCs

Processes:

aacc6bdfe93b86d8502b11ffab4a08e9b14d7c44e6aa9b31a9aee278d4576fb9.exe

description pid process target process

PID 4656 set thread context of 4376 4656 aacc6bdfe93b86d8502b11ffab4a08e9b14d7c44e6aa9b31a9aee278d4576fb9.exe kat9E24.tmp
Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

2136 timeout.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

kat9E24.tmp

pid process

4376 kat9E24.tmp
4376 kat9E24.tmp

pid	process
4376	kat9E24.tmp

description	pid	process	target process
PID 4656 set thread context of 4376	4656	aacc6bdfe93b86d8502b11ffab4a08e9b14d7c44e6aa9b31a9aee278d4576fb9.exe	kat9E24.tmp

pid	process
2136	timeout.exe

pid	process
4376	kat9E24.tmp
4376	kat9E24.tmp

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

aacc6bdfe93b86d8502b11ffab4a08e9b14d7c44e6aa9b31a9aee278d4576fb9.exe

description	pid	process	target process
PID 4656 wrote to memory of 4376	4656	aacc6bdfe93b86d8502b11ffab4a08e9b14d7c44e6aa9b31a9aee278d4576fb9.exe	kat9E24.tmp
PID 4656 wrote to memory of 4376	4656	aacc6bdfe93b86d8502b11ffab4a08e9b14d7c44e6aa9b31a9aee278d4576fb9.exe	kat9E24.tmp
PID 4656 wrote to memory of 4376	4656	aacc6bdfe93b86d8502b11ffab4a08e9b14d7c44e6aa9b31a9aee278d4576fb9.exe	kat9E24.tmp
PID 4656 wrote to memory of 4376	4656	aacc6bdfe93b86d8502b11ffab4a08e9b14d7c44e6aa9b31a9aee278d4576fb9.exe	kat9E24.tmp
PID 4656 wrote to memory of 4376	4656	aacc6bdfe93b86d8502b11ffab4a08e9b14d7c44e6aa9b31a9aee278d4576fb9.exe	kat9E24.tmp
PID 4656 wrote to memory of 4376	4656	aacc6bdfe93b86d8502b11ffab4a08e9b14d7c44e6aa9b31a9aee278d4576fb9.exe	kat9E24.tmp
PID 4656 wrote to memory of 4376	4656	aacc6bdfe93b86d8502b11ffab4a08e9b14d7c44e6aa9b31a9aee278d4576fb9.exe	kat9E24.tmp
PID 4656 wrote to memory of 4376	4656	aacc6bdfe93b86d8502b11ffab4a08e9b14d7c44e6aa9b31a9aee278d4576fb9.exe	kat9E24.tmp

C:\Users\Admin\AppData\Local\Temp\aacc6bdfe93b86d8502b11ffab4a08e9b14d7c44e6aa9b31a9aee278d4576fb9.exe
"C:\Users\Admin\AppData\Local\Temp\aacc6bdfe93b86d8502b11ffab4a08e9b14d7c44e6aa9b31a9aee278d4576fb9.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4656

C:\Users\Admin\AppData\Local\Temp\kat9E24.tmp
C:\Users\Admin\AppData\Local\Temp\kat9E24.tmp
2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
PID:4376

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat9E24.tmp" & rd /s /q "C:\ProgramData\FBKFCFBFIDGC" & exit
3⤵
PID:3276

C:\Windows\SysWOW64\timeout.exe
timeout /t 10
4⤵
- Delays execution with timeout.exe
PID:2136

Network

MITRE ATT&CK Matrix

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Downloads

C:\Users\Admin\AppData\Local\Temp\kat9E24.tmp
Filesize
861KB

MD5
66064dbdb70a5eb15ebf3bf65aba254b

SHA1
0284fd320f99f62aca800fb1251eff4c31ec4ed7

SHA256
6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795

SHA512
b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

Download Submit
memory/4376-25-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4376-24-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4376-73-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4376-8-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4376-27-0x000000002F720000-0x000000002F97F000-memory.dmp

Filesize
2.4MB

Download
memory/4376-72-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4376-10-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4376-71-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4376-4-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4376-42-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4376-43-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4376-59-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4376-60-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4656-0-0x00000000024F0000-0x00000000024F1000-memory.dmp

Filesize
4KB

Download
memory/4656-1-0x0000000004180000-0x0000000004293000-memory.dmp

Filesize
1.1MB

Download
memory/4656-9-0x0000000000400000-0x0000000000641000-memory.dmp

Filesize
2.3MB

Download