stealc | a531cf5568b7ab1e70b269186601bedacd734851da989ac6d37771f1b0b87547

Analysis

max time kernel
139s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
20/07/2024, 04:32

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General

Target

a531cf5568b7ab1e70b269186601bedacd734851da989ac6d37771f1b0b87547.exe
Size

370KB
MD5

0d0b2d2e8e757e66ae44a0e3aeed2512
SHA1

029d6b6dab4f3b33806fcdb8ec9b457e1c7d46f6
SHA256

a531cf5568b7ab1e70b269186601bedacd734851da989ac6d37771f1b0b87547
SHA512

023a413eddd057e2253b2e674329000b14423c23db78eb61ee91538e0a73beb3e58326bc85405762ad7cd2152d6158fb844b2b8003c9b635b46b039c0010bd4b
SSDEEP

6144:hTNLdeErsZ/lyvUpo9lq4PT3fbf0FIMPoB4ikVTRcv2oFDXTUbEpQqee:nLgErJ3L0F5C4px82rEp6e

Score

10^/10

stealc hnew discovery spyware stealer

Malware Config

Extracted

Family

stealc

Botnet

hnew

http://85.28.47.70

Attributes

url_path
/570d5d5e8678366c.php

Signatures

Stealc
Stealc is an infostealer written in C++.
stealer stealc

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-1-5-21-1176886754-713327781-2233697964-1000\Control Panel\International\Geo\Nation	RegAsm.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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4124 set thread context of 2368	4124	a531cf5568b7ab1e70b269186601bedacd734851da989ac6d37771f1b0b87547.exe	86

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 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

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

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
776	timeout.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2368	RegAsm.exe
2368	RegAsm.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 4124 wrote to memory of 2368	4124	a531cf5568b7ab1e70b269186601bedacd734851da989ac6d37771f1b0b87547.exe	86
PID 4124 wrote to memory of 2368	4124	a531cf5568b7ab1e70b269186601bedacd734851da989ac6d37771f1b0b87547.exe	86
PID 4124 wrote to memory of 2368	4124	a531cf5568b7ab1e70b269186601bedacd734851da989ac6d37771f1b0b87547.exe	86
PID 4124 wrote to memory of 2368	4124	a531cf5568b7ab1e70b269186601bedacd734851da989ac6d37771f1b0b87547.exe	86
PID 4124 wrote to memory of 2368	4124	a531cf5568b7ab1e70b269186601bedacd734851da989ac6d37771f1b0b87547.exe	86
PID 4124 wrote to memory of 2368	4124	a531cf5568b7ab1e70b269186601bedacd734851da989ac6d37771f1b0b87547.exe	86
PID 4124 wrote to memory of 2368	4124	a531cf5568b7ab1e70b269186601bedacd734851da989ac6d37771f1b0b87547.exe	86
PID 4124 wrote to memory of 2368	4124	a531cf5568b7ab1e70b269186601bedacd734851da989ac6d37771f1b0b87547.exe	86
PID 4124 wrote to memory of 2368	4124	a531cf5568b7ab1e70b269186601bedacd734851da989ac6d37771f1b0b87547.exe	86
PID 2368 wrote to memory of 232	2368	RegAsm.exe	89
PID 2368 wrote to memory of 232	2368	RegAsm.exe	89
PID 2368 wrote to memory of 232	2368	RegAsm.exe	89
PID 232 wrote to memory of 776	232	cmd.exe	91
PID 232 wrote to memory of 776	232	cmd.exe	91
PID 232 wrote to memory of 776	232	cmd.exe	91

C:\Users\Admin\AppData\Local\Temp\a531cf5568b7ab1e70b269186601bedacd734851da989ac6d37771f1b0b87547.exe
"C:\Users\Admin\AppData\Local\Temp\a531cf5568b7ab1e70b269186601bedacd734851da989ac6d37771f1b0b87547.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4124
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  - Checks computer location settings
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2368
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe" & del "C:\ProgramData\*.dll"" & exit
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:232
  - - C:\Windows\SysWOW64\timeout.exe
      timeout /t 5
      4⤵
      Delays execution with timeout.exe
      PID:776

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/2368-0-0x0000000000400000-0x000000000063C000-memory.dmp

Filesize
2.2MB

Download
memory/2368-3-0x0000000000400000-0x000000000063C000-memory.dmp

Filesize
2.2MB

Download
memory/2368-4-0x0000000000400000-0x000000000063C000-memory.dmp

Filesize
2.2MB

Download
memory/2368-5-0x0000000000400000-0x000000000063C000-memory.dmp

Filesize
2.2MB

Download
memory/4124-1-0x0000000000E00000-0x0000000000E01000-memory.dmp

Filesize
4KB

Download