stealc | 416b40630daa924136b9d10e0faa8c800a7a882416f4e5b7944f9bc2553a414b

Analysis

max time kernel
79s
max time network
99s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
30-06-2024 14:32

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

c5f20b0cb835adff91c281ba3e9995e3.exe
Size

4.4MB
MD5

c5f20b0cb835adff91c281ba3e9995e3
SHA1

b7edfc4fb9befe9acf241e423741e27d68dfd832
SHA256

416b40630daa924136b9d10e0faa8c800a7a882416f4e5b7944f9bc2553a414b
SHA512

233587e39de30cfa0a9526fb041f9c9c70a1e7574e8bd8d934f7b795f3eff2a8aa8e98f20a7fcb06f00c85c233461d56bbabb4bba39c1ac4869839e3f0022678
SSDEEP

49152:e+PcYB/o36ki63Hw4/uzcdl3ne2xAOVmmgZV099snm9pswB0Nq7:tPcYB/y6ki6PnuwT06sajB0Nq7

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 6 IoCs

stealer

Processes:

resource	yara_rule
behavioral2/memory/1652-69-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/1652-67-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/1652-73-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/1652-75-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/1652-76-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/1652-78-0x0000000000400000-0x0000000000648000-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
Suspicious use of SetThreadContext 1 IoCs

Processes:

c5f20b0cb835adff91c281ba3e9995e3.exe

description pid process target process

PID 4800 set thread context of 1652 4800 c5f20b0cb835adff91c281ba3e9995e3.exe MSBuild.exe

description	pid	process	target process
PID 4800 set thread context of 1652	4800	c5f20b0cb835adff91c281ba3e9995e3.exe	MSBuild.exe

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:

MSBuild.exe

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

Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

540 timeout.exe
Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

MSBuild.exe

pid process

1652 MSBuild.exe
1652 MSBuild.exe
1652 MSBuild.exe
1652 MSBuild.exe
1652 MSBuild.exe
1652 MSBuild.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

c5f20b0cb835adff91c281ba3e9995e3.exe

description pid process

Token: SeDebugPrivilege 4800 c5f20b0cb835adff91c281ba3e9995e3.exe

pid	process
540	timeout.exe

pid	process
1652	MSBuild.exe
1652	MSBuild.exe
1652	MSBuild.exe
1652	MSBuild.exe
1652	MSBuild.exe
1652	MSBuild.exe

description	pid	process
Token: SeDebugPrivilege	4800	c5f20b0cb835adff91c281ba3e9995e3.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

c5f20b0cb835adff91c281ba3e9995e3.exeMSBuild.execmd.exe

description	pid	process	target process
PID 4800 wrote to memory of 1652	4800	c5f20b0cb835adff91c281ba3e9995e3.exe	MSBuild.exe
PID 4800 wrote to memory of 1652	4800	c5f20b0cb835adff91c281ba3e9995e3.exe	MSBuild.exe
PID 4800 wrote to memory of 1652	4800	c5f20b0cb835adff91c281ba3e9995e3.exe	MSBuild.exe
PID 4800 wrote to memory of 1652	4800	c5f20b0cb835adff91c281ba3e9995e3.exe	MSBuild.exe
PID 4800 wrote to memory of 1652	4800	c5f20b0cb835adff91c281ba3e9995e3.exe	MSBuild.exe
PID 4800 wrote to memory of 1652	4800	c5f20b0cb835adff91c281ba3e9995e3.exe	MSBuild.exe
PID 4800 wrote to memory of 1652	4800	c5f20b0cb835adff91c281ba3e9995e3.exe	MSBuild.exe
PID 4800 wrote to memory of 1652	4800	c5f20b0cb835adff91c281ba3e9995e3.exe	MSBuild.exe
PID 4800 wrote to memory of 1652	4800	c5f20b0cb835adff91c281ba3e9995e3.exe	MSBuild.exe
PID 1652 wrote to memory of 1484	1652	MSBuild.exe	cmd.exe
PID 1652 wrote to memory of 1484	1652	MSBuild.exe	cmd.exe
PID 1652 wrote to memory of 1484	1652	MSBuild.exe	cmd.exe
PID 1484 wrote to memory of 540	1484	cmd.exe	timeout.exe
PID 1484 wrote to memory of 540	1484	cmd.exe	timeout.exe
PID 1484 wrote to memory of 540	1484	cmd.exe	timeout.exe

C:\Users\Admin\AppData\Local\Temp\c5f20b0cb835adff91c281ba3e9995e3.exe
"C:\Users\Admin\AppData\Local\Temp\c5f20b0cb835adff91c281ba3e9995e3.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4800

C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
2⤵
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1652

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe" & rd /s /q "C:\ProgramData\HJJECBKKECFI" & exit
3⤵
- Suspicious use of WriteProcessMemory
PID:1484

C:\Windows\SysWOW64\timeout.exe
timeout /t 10
4⤵
- Delays execution with timeout.exe
PID:540

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

Loading Replay Monitor...

Downloads

memory/1652-69-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/1652-78-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/1652-76-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/1652-75-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/1652-73-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/1652-67-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4800-46-0x0000000003730000-0x0000000003745000-memory.dmp

Filesize
84KB

Download
memory/4800-36-0x0000000003730000-0x0000000003745000-memory.dmp

Filesize
84KB

Download
memory/4800-6-0x0000000003730000-0x000000000374C000-memory.dmp

Filesize
112KB

Download
memory/4800-71-0x0000000075090000-0x0000000075840000-memory.dmp

Filesize
7.7MB

Download
memory/4800-5-0x0000000005D50000-0x0000000005E5C000-memory.dmp

Filesize
1.0MB

Download
memory/4800-4-0x0000000075090000-0x0000000075840000-memory.dmp

Filesize
7.7MB

Download
memory/4800-72-0x0000000075090000-0x0000000075840000-memory.dmp

Filesize
7.7MB

Download
memory/4800-64-0x0000000003730000-0x0000000003745000-memory.dmp

Filesize
84KB

Download
memory/4800-62-0x0000000003730000-0x0000000003745000-memory.dmp

Filesize
84KB

Download
memory/4800-60-0x0000000003730000-0x0000000003745000-memory.dmp

Filesize
84KB

Download
memory/4800-58-0x0000000003730000-0x0000000003745000-memory.dmp

Filesize
84KB

Download
memory/4800-56-0x0000000003730000-0x0000000003745000-memory.dmp

Filesize
84KB

Download
memory/4800-55-0x0000000003730000-0x0000000003745000-memory.dmp

Filesize
84KB

Download
memory/4800-52-0x0000000003730000-0x0000000003745000-memory.dmp

Filesize
84KB

Download
memory/4800-50-0x0000000003730000-0x0000000003745000-memory.dmp

Filesize
84KB

Download
memory/4800-48-0x0000000003730000-0x0000000003745000-memory.dmp

Filesize
84KB

Download
memory/4800-0-0x000000007509E000-0x000000007509F000-memory.dmp

Filesize
4KB

Download
memory/4800-44-0x0000000003730000-0x0000000003745000-memory.dmp

Filesize
84KB

Download
memory/4800-42-0x0000000003730000-0x0000000003745000-memory.dmp

Filesize
84KB

Download
memory/4800-40-0x0000000003730000-0x0000000003745000-memory.dmp

Filesize
84KB

Download
memory/4800-38-0x0000000003730000-0x0000000003745000-memory.dmp

Filesize
84KB

Download
memory/4800-66-0x0000000003730000-0x0000000003745000-memory.dmp

Filesize
84KB

Download
memory/4800-34-0x0000000003730000-0x0000000003745000-memory.dmp

Filesize
84KB

Download
memory/4800-32-0x0000000003730000-0x0000000003745000-memory.dmp

Filesize
84KB

Download
memory/4800-30-0x0000000003730000-0x0000000003745000-memory.dmp

Filesize
84KB

Download
memory/4800-28-0x0000000003730000-0x0000000003745000-memory.dmp

Filesize
84KB

Download
memory/4800-26-0x0000000003730000-0x0000000003745000-memory.dmp

Filesize
84KB

Download
memory/4800-24-0x0000000003730000-0x0000000003745000-memory.dmp

Filesize
84KB

Download
memory/4800-23-0x0000000003730000-0x0000000003745000-memory.dmp

Filesize
84KB

Download
memory/4800-20-0x0000000003730000-0x0000000003745000-memory.dmp

Filesize
84KB

Download
memory/4800-19-0x0000000003730000-0x0000000003745000-memory.dmp

Filesize
84KB

Download
memory/4800-16-0x0000000003730000-0x0000000003745000-memory.dmp

Filesize
84KB

Download
memory/4800-14-0x0000000003730000-0x0000000003745000-memory.dmp

Filesize
84KB

Download
memory/4800-10-0x0000000003730000-0x0000000003745000-memory.dmp

Filesize
84KB

Download
memory/4800-12-0x0000000003730000-0x0000000003745000-memory.dmp

Filesize
84KB

Download
memory/4800-8-0x0000000003730000-0x0000000003745000-memory.dmp

Filesize
84KB

Download
memory/4800-7-0x0000000003730000-0x0000000003745000-memory.dmp

Filesize
84KB

Download
memory/4800-74-0x0000000075090000-0x0000000075840000-memory.dmp

Filesize
7.7MB

Download
memory/4800-2-0x0000000005C60000-0x0000000005CFC000-memory.dmp

Filesize
624KB

Download
memory/4800-3-0x0000000003700000-0x000000000370A000-memory.dmp

Filesize
40KB

Download
memory/4800-1-0x0000000000ED0000-0x0000000001332000-memory.dmp

Filesize
4.4MB

Download