stealc | 1f7553701ef80138d6fd387a8a5919bd34684600b8c81e45102d2a4c720786c1

Analysis

max time kernel
52s
max time network
58s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
15-06-2024 12:11

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

#!~#0Pen_9898_P@$SW0rd~!!$/Setup.exe
Size

5.4MB
MD5

ad2735f096925010a53450cb4178c89e
SHA1

c6d65163c6315a642664f4eaec0fae9528549bfe
SHA256

4e775b5fafb4e6d89a4694f8694d2b8b540534bd4a52ff42f70095f1c929160e
SHA512

1868b22a7c5cba89545b06f010c09c5418b3d86039099d681eee9567c47208fdba3b89c6251cf03c964c58c805280d45ba9c3533125f6bd3e0bc067477e03ab9
SSDEEP

98304:o/zx+riUDpJowboU+XEsumY2XW6jBYeZ1ER:2x+riUDwUj12X1tY5

Score

10^/10

stealc vidar discovery spyware stealer

Malware Config

Extracted

Family

stealc

rc4.plain

Signatures

Detect Vidar Stealer 2 IoCs

stealer

Processes:

resource	yara_rule
behavioral6/memory/4844-27-0x0000000000B40000-0x000000000128B000-memory.dmp	family_vidar_v7
behavioral6/memory/4844-41-0x0000000000B40000-0x000000000128B000-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
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.

Query Registry
T1012

System Information Discovery
T1082

Processes:

coml.au3

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation coml.au3
Loads dropped DLL 1 IoCs

Processes:

coml.au3

pid process

4844 coml.au3
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
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:

Setup.exe

description pid process target process

PID 3220 set thread context of 4892 3220 Setup.exe netsh.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.

Query Registry
T1012

System Information Discovery
T1082

Processes:

coml.au3

description ioc process

Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString coml.au3
Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

2256 timeout.exe
Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

Setup.exenetsh.execoml.au3

pid process

3220 Setup.exe
3220 Setup.exe
4892 netsh.exe
4892 netsh.exe
4844 coml.au3
4844 coml.au3
Suspicious behavior: MapViewOfSection 2 IoCs

Processes:

Setup.exenetsh.exe

pid process

3220 Setup.exe
4892 netsh.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation	coml.au3

pid	process
4844	coml.au3

description	pid	process	target process
PID 3220 set thread context of 4892	3220	Setup.exe	netsh.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	coml.au3

pid	process
2256	timeout.exe

pid	process
3220	Setup.exe
3220	Setup.exe
4892	netsh.exe
4892	netsh.exe
4844	coml.au3
4844	coml.au3

pid	process
3220	Setup.exe
4892	netsh.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

Setup.exenetsh.execoml.au3cmd.exe

description	pid	process	target process
PID 3220 wrote to memory of 4892	3220	Setup.exe	netsh.exe
PID 3220 wrote to memory of 4892	3220	Setup.exe	netsh.exe
PID 3220 wrote to memory of 4892	3220	Setup.exe	netsh.exe
PID 3220 wrote to memory of 4892	3220	Setup.exe	netsh.exe
PID 4892 wrote to memory of 4844	4892	netsh.exe	coml.au3
PID 4892 wrote to memory of 4844	4892	netsh.exe	coml.au3
PID 4892 wrote to memory of 4844	4892	netsh.exe	coml.au3
PID 4892 wrote to memory of 4844	4892	netsh.exe	coml.au3
PID 4892 wrote to memory of 4844	4892	netsh.exe	coml.au3
PID 4844 wrote to memory of 4032	4844	coml.au3	cmd.exe
PID 4844 wrote to memory of 4032	4844	coml.au3	cmd.exe
PID 4844 wrote to memory of 4032	4844	coml.au3	cmd.exe
PID 4032 wrote to memory of 2256	4032	cmd.exe	timeout.exe
PID 4032 wrote to memory of 2256	4032	cmd.exe	timeout.exe
PID 4032 wrote to memory of 2256	4032	cmd.exe	timeout.exe

C:\Users\Admin\AppData\Local\Temp\#!~#0Pen_9898_P@$SW0rd~!!$\Setup.exe
"C:\Users\Admin\AppData\Local\Temp\#!~#0Pen_9898_P@$SW0rd~!!$\Setup.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:3220

C:\Windows\SysWOW64\netsh.exe
C:\Windows\SysWOW64\netsh.exe
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:4892

C:\Users\Admin\AppData\Local\Temp\coml.au3
C:\Users\Admin\AppData\Local\Temp\coml.au3
3⤵
- Checks computer location settings
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4844

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\coml.au3" & rd /s /q "C:\ProgramData\JKKFIIEBKEGI" & exit
4⤵
- Suspicious use of WriteProcessMemory
PID:4032

C:\Windows\SysWOW64\timeout.exe
timeout /t 10
5⤵
- Delays execution with timeout.exe
PID:2256

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\9fb9f845
Filesize
6.8MB

MD5
8eff6e2e862c843def4de151d9f4c267

SHA1
f1ea836f9ea8ebfa44f5be8a6631ac5614069328

SHA256
64a7266ebca0cf2cc5fd67770f0b95414963fde9be1aa2fd90409cee35afdb7c

SHA512
67e93ecbca29307960e0c9de2ea6046204e3c51a0368cdbade7e79980d1884855e545faeb0524de7ee28885126b421254e7112c082a685c2fae68be78cfc7cc8

Download Submit
C:\Users\Admin\AppData\Local\Temp\coml.au3
Filesize
872KB

MD5
c56b5f0201a3b3de53e561fe76912bfd

SHA1
2a4062e10a5de813f5688221dbeb3f3ff33eb417

SHA256
237d1bca6e056df5bb16a1216a434634109478f882d3b1d58344c801d184f95d

SHA512
195b98245bb820085ae9203cdb6d470b749d1f228908093e8606453b027b7d7681ccd7952e30c2f5dd40f8f0b999ccfc60ebb03419b574c08de6816e75710d2c

Download Submit
memory/3220-14-0x00007FFC9B6E0000-0x00007FFC9B852000-memory.dmp

Filesize
1.4MB

Download
memory/3220-0-0x00007FFC9B6E0000-0x00007FFC9B852000-memory.dmp

Filesize
1.4MB

Download
memory/3220-13-0x00007FFC9B6E0000-0x00007FFC9B852000-memory.dmp

Filesize
1.4MB

Download
memory/3220-12-0x00007FFC9B6F8000-0x00007FFC9B6F9000-memory.dmp

Filesize
4KB

Download
memory/4844-26-0x00007FFCB9D70000-0x00007FFCB9F65000-memory.dmp

Filesize
2.0MB

Download
memory/4844-27-0x0000000000B40000-0x000000000128B000-memory.dmp

Filesize
7.3MB

Download
memory/4844-29-0x0000000061E00000-0x0000000061EF3000-memory.dmp

Filesize
972KB

Download
memory/4844-41-0x0000000000B40000-0x000000000128B000-memory.dmp

Filesize
7.3MB

Download
memory/4892-17-0x00007FFCB9D70000-0x00007FFCB9F65000-memory.dmp

Filesize
2.0MB

Download
memory/4892-20-0x0000000073F21000-0x0000000073F2F000-memory.dmp

Filesize
56KB

Download
memory/4892-19-0x0000000073F2E000-0x0000000073F30000-memory.dmp

Filesize
8KB

Download
memory/4892-24-0x0000000073F21000-0x0000000073F2F000-memory.dmp

Filesize
56KB

Download