stealc | efb7b314abe4685b34f532a5def003fea614dea854f831331ea5b053efad9c17

Analysis

max time kernel
5s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
01-07-2024 00:46

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General

Target

efb7b314abe4685b34f532a5def003fea614dea854f831331ea5b053efad9c17.exe
Size

2.2MB
MD5

71aba2cd262ea7ad762dfbd892ffe50e
SHA1

ae2add19b4685f9f27bbe9c66551b60008cf7c7a
SHA256

efb7b314abe4685b34f532a5def003fea614dea854f831331ea5b053efad9c17
SHA512

b7478c2fd9f8cf98fe768b567a51ad4b89e8b89d9781023fb0dd3c6198f93622f2716cbdfb83344d3fb4b7ee0daa79953629c580bbd2c91a03ffb9d47bef3173
SSDEEP

24576:Uc0PyhhGkCI1wUL24jtYkYGbawg757CgXueAgXvmU2MZQti1u8LnsDJY6WpEYGYG:UJ0hsA91MPN21tuuIeNHYGY0LzjsJxK

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 14 IoCs

stealer

Processes:

resource	yara_rule
behavioral1/memory/4424-10-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/4424-8-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/4424-4-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/2748-1-0x0000000004170000-0x0000000004283000-memory.dmp	family_vidar_v7
behavioral1/memory/4424-22-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/4424-23-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/4424-40-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/4424-41-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/4424-57-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/4424-58-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/4424-69-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/4424-70-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/4424-71-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/4424-72-0x0000000000400000-0x0000000000648000-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:

kat4805.tmp

pid process

4424 kat4805.tmp
Suspicious use of SetThreadContext 1 IoCs

Processes:

efb7b314abe4685b34f532a5def003fea614dea854f831331ea5b053efad9c17.exe

description pid process target process

PID 2748 set thread context of 4424 2748 efb7b314abe4685b34f532a5def003fea614dea854f831331ea5b053efad9c17.exe kat4805.tmp
Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

2440 timeout.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

kat4805.tmp

pid process

4424 kat4805.tmp
4424 kat4805.tmp

pid	process
4424	kat4805.tmp

description	pid	process	target process
PID 2748 set thread context of 4424	2748	efb7b314abe4685b34f532a5def003fea614dea854f831331ea5b053efad9c17.exe	kat4805.tmp

pid	process
2440	timeout.exe

pid	process
4424	kat4805.tmp
4424	kat4805.tmp

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

efb7b314abe4685b34f532a5def003fea614dea854f831331ea5b053efad9c17.exe

description	pid	process	target process
PID 2748 wrote to memory of 4424	2748	efb7b314abe4685b34f532a5def003fea614dea854f831331ea5b053efad9c17.exe	kat4805.tmp
PID 2748 wrote to memory of 4424	2748	efb7b314abe4685b34f532a5def003fea614dea854f831331ea5b053efad9c17.exe	kat4805.tmp
PID 2748 wrote to memory of 4424	2748	efb7b314abe4685b34f532a5def003fea614dea854f831331ea5b053efad9c17.exe	kat4805.tmp
PID 2748 wrote to memory of 4424	2748	efb7b314abe4685b34f532a5def003fea614dea854f831331ea5b053efad9c17.exe	kat4805.tmp
PID 2748 wrote to memory of 4424	2748	efb7b314abe4685b34f532a5def003fea614dea854f831331ea5b053efad9c17.exe	kat4805.tmp
PID 2748 wrote to memory of 4424	2748	efb7b314abe4685b34f532a5def003fea614dea854f831331ea5b053efad9c17.exe	kat4805.tmp
PID 2748 wrote to memory of 4424	2748	efb7b314abe4685b34f532a5def003fea614dea854f831331ea5b053efad9c17.exe	kat4805.tmp
PID 2748 wrote to memory of 4424	2748	efb7b314abe4685b34f532a5def003fea614dea854f831331ea5b053efad9c17.exe	kat4805.tmp

C:\Users\Admin\AppData\Local\Temp\efb7b314abe4685b34f532a5def003fea614dea854f831331ea5b053efad9c17.exe
"C:\Users\Admin\AppData\Local\Temp\efb7b314abe4685b34f532a5def003fea614dea854f831331ea5b053efad9c17.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2748

C:\Users\Admin\AppData\Local\Temp\kat4805.tmp
C:\Users\Admin\AppData\Local\Temp\kat4805.tmp
2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
PID:4424

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat4805.tmp" & rd /s /q "C:\ProgramData\BGHJEBKJEGHJ" & exit
3⤵
PID:2220

C:\Windows\SysWOW64\timeout.exe
timeout /t 10
4⤵
- Delays execution with timeout.exe
PID:2440

Network

MITRE ATT&CK Matrix

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Downloads

C:\Users\Admin\AppData\Local\Temp\kat4805.tmp
Filesize
861KB

MD5
66064dbdb70a5eb15ebf3bf65aba254b

SHA1
0284fd320f99f62aca800fb1251eff4c31ec4ed7

SHA256
6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795

SHA512
b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

Download Submit
memory/2748-1-0x0000000004170000-0x0000000004283000-memory.dmp

Filesize
1.1MB

Download
memory/2748-0-0x00000000023F0000-0x00000000023F1000-memory.dmp

Filesize
4KB

Download
memory/2748-9-0x0000000000400000-0x0000000000641000-memory.dmp

Filesize
2.3MB

Download
memory/4424-23-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4424-41-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4424-8-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4424-22-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4424-10-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4424-25-0x0000000020230000-0x000000002048F000-memory.dmp

Filesize
2.4MB

Download
memory/4424-40-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4424-4-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4424-57-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4424-58-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4424-69-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4424-70-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4424-71-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4424-72-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download