stealc | 9f1c239226fd84c5e2f72a8707cbc0cea05d227515918b4b462e0971332d91a9

Analysis

max time kernel
120s
max time network
94s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
09-05-2024 10:21

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General

Target

9f1c239226fd84c5e2f72a8707cbc0cea05d227515918b4b462e0971332d91a9.exe
Size

218KB
MD5

28a1ec20020e0f282a7467bfaa73b1bb
SHA1

09321c21c96014d1836b3fe25ffcb3132a6f9ce5
SHA256

9f1c239226fd84c5e2f72a8707cbc0cea05d227515918b4b462e0971332d91a9
SHA512

21b098d4869e930f91d4bf9a7061eaa5e0e365c0462ee3f4653f0317e22b1c0197cb71548ef29be510d58a6b7b9d9dd050c725b675c2e774e75511f5394b384c
SSDEEP

3072:PAhQ//Key6sTKdNJh80s+BSi5cHUICx03C1withR5bVlgM:Iy//KycKbv80s+V5c5C03sjz

Score

10^/10

stealc discovery spyware stealer

Malware Config

Extracted

Family

stealc

http://185.172.128.150

Attributes

url_path
/c698e1bc8a2f5e6d.php

Signatures

Stealc
Stealc is an infostealer written in C++.
stealer stealc
Downloads MZ/PE file

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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation	9f1c239226fd84c5e2f72a8707cbc0cea05d227515918b4b462e0971332d91a9.exe

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
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
848	4280	WerFault.exe	81

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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	9f1c239226fd84c5e2f72a8707cbc0cea05d227515918b4b462e0971332d91a9.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	9f1c239226fd84c5e2f72a8707cbc0cea05d227515918b4b462e0971332d91a9.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
4008	timeout.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4280	9f1c239226fd84c5e2f72a8707cbc0cea05d227515918b4b462e0971332d91a9.exe
4280	9f1c239226fd84c5e2f72a8707cbc0cea05d227515918b4b462e0971332d91a9.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4280 wrote to memory of 3936	4280	9f1c239226fd84c5e2f72a8707cbc0cea05d227515918b4b462e0971332d91a9.exe	89
PID 4280 wrote to memory of 3936	4280	9f1c239226fd84c5e2f72a8707cbc0cea05d227515918b4b462e0971332d91a9.exe	89
PID 4280 wrote to memory of 3936	4280	9f1c239226fd84c5e2f72a8707cbc0cea05d227515918b4b462e0971332d91a9.exe	89
PID 3936 wrote to memory of 4008	3936	cmd.exe	93
PID 3936 wrote to memory of 4008	3936	cmd.exe	93
PID 3936 wrote to memory of 4008	3936	cmd.exe	93

C:\Users\Admin\AppData\Local\Temp\9f1c239226fd84c5e2f72a8707cbc0cea05d227515918b4b462e0971332d91a9.exe
"C:\Users\Admin\AppData\Local\Temp\9f1c239226fd84c5e2f72a8707cbc0cea05d227515918b4b462e0971332d91a9.exe"
1⤵
- Checks computer location settings
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4280
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\9f1c239226fd84c5e2f72a8707cbc0cea05d227515918b4b462e0971332d91a9.exe" & del "C:\ProgramData\*.dll"" & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3936
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 5
    3⤵
    - Delays execution with timeout.exe
    PID:4008
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4280 -s 1036
  2⤵
  - Program crash
  PID:848

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 4280 -ip 4280
1⤵
PID:3984

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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

Command and Control

Exfiltration

Impact

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Downloads

memory/4280-1-0x0000000002D70000-0x0000000002E70000-memory.dmp

Filesize
1024KB

Download
memory/4280-3-0x0000000000400000-0x000000000063B000-memory.dmp

Filesize
2.2MB

Download
memory/4280-2-0x0000000003000000-0x0000000003027000-memory.dmp

Filesize
156KB

Download
memory/4280-4-0x0000000061E00000-0x0000000061EF3000-memory.dmp

Filesize
972KB

Download
memory/4280-23-0x0000000000400000-0x000000000063B000-memory.dmp

Filesize
2.2MB

Download
memory/4280-22-0x0000000000400000-0x0000000002AF3000-memory.dmp

Filesize
38.9MB

Download