stealc | b16ef1bdc9bcba0db197bba5bca6fa08ece713de76412e6bea6de5a8dab2af6f

Analysis

max time kernel
16s
max time network
16s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
08-09-2024 23:15

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General

Target

s.exe
Size

206KB
MD5

45fb3cd11b294fe8a05691cdab474786
SHA1

cfec8cb59f94b534280f47fcadd68af89107f124
SHA256

b16ef1bdc9bcba0db197bba5bca6fa08ece713de76412e6bea6de5a8dab2af6f
SHA512

e1e26c7706f8d74ae1a0d6d9b1765ee81440746428ea9c6ca9127326dc8fdb2b2419a79109734848978866f52741902f99031b47cb2c9a09427e5a13f51f1f81
SSDEEP

3072:xpd1ryZS4TFEOXqiJb2RztrqvXACp12ob5cNJtFRJodNpzGj8dmfcUY8ll4BzEBO:jdpyIGLCNt8p12hJtFPod7aQIfFWBYBO

Score

10^/10

stealc default discovery stealer

Malware Config

Extracted

Family

stealc

Botnet

default

http://46.8.231.109

Attributes

url_path
/c4754d4f680ead72.php

Signatures

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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2532 set thread context of 2224	2532	s.exe	32

Program crash 1 IoCs

pid	pid_target	Process
2820	2224	WerFault.exe

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	s.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe

Suspicious use of WriteProcessMemory 31 IoCs

description	pid	Process	procid_target
PID 2532 wrote to memory of 2260	2532	s.exe	30
PID 2532 wrote to memory of 2260	2532	s.exe	30
PID 2532 wrote to memory of 2260	2532	s.exe	30
PID 2532 wrote to memory of 2260	2532	s.exe	30
PID 2532 wrote to memory of 2260	2532	s.exe	30
PID 2532 wrote to memory of 2260	2532	s.exe	30
PID 2532 wrote to memory of 2260	2532	s.exe	30
PID 2532 wrote to memory of 2148	2532	s.exe	31
PID 2532 wrote to memory of 2148	2532	s.exe	31
PID 2532 wrote to memory of 2148	2532	s.exe	31
PID 2532 wrote to memory of 2148	2532	s.exe	31
PID 2532 wrote to memory of 2148	2532	s.exe	31
PID 2532 wrote to memory of 2148	2532	s.exe	31
PID 2532 wrote to memory of 2148	2532	s.exe	31
PID 2532 wrote to memory of 2224	2532	s.exe	32
PID 2532 wrote to memory of 2224	2532	s.exe	32
PID 2532 wrote to memory of 2224	2532	s.exe	32
PID 2532 wrote to memory of 2224	2532	s.exe	32
PID 2532 wrote to memory of 2224	2532	s.exe	32
PID 2532 wrote to memory of 2224	2532	s.exe	32
PID 2532 wrote to memory of 2224	2532	s.exe	32
PID 2532 wrote to memory of 2224	2532	s.exe	32
PID 2532 wrote to memory of 2224	2532	s.exe	32
PID 2532 wrote to memory of 2224	2532	s.exe	32
PID 2532 wrote to memory of 2224	2532	s.exe	32
PID 2532 wrote to memory of 2224	2532	s.exe	32
PID 2532 wrote to memory of 2224	2532	s.exe	32
PID 2224 wrote to memory of 2820	2224	RegAsm.exe	33
PID 2224 wrote to memory of 2820	2224	RegAsm.exe	33
PID 2224 wrote to memory of 2820	2224	RegAsm.exe	33
PID 2224 wrote to memory of 2820	2224	RegAsm.exe	33

C:\Users\Admin\AppData\Local\Temp\s.exe
"C:\Users\Admin\AppData\Local\Temp\s.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2532
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  PID:2260
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  PID:2148
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2224
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2224 -s 252
    3⤵
    - Program crash
    PID:2820

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2224-10-0x0000000000400000-0x0000000000643000-memory.dmp

Filesize
2.3MB

Download
memory/2224-4-0x0000000000400000-0x0000000000643000-memory.dmp

Filesize
2.3MB

Download
memory/2224-16-0x0000000000400000-0x0000000000643000-memory.dmp

Filesize
2.3MB

Download
memory/2224-12-0x0000000000400000-0x0000000000643000-memory.dmp

Filesize
2.3MB

Download
memory/2224-8-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2224-7-0x0000000000400000-0x0000000000643000-memory.dmp

Filesize
2.3MB

Download
memory/2224-6-0x0000000000400000-0x0000000000643000-memory.dmp

Filesize
2.3MB

Download
memory/2224-5-0x0000000000400000-0x0000000000643000-memory.dmp

Filesize
2.3MB

Download
memory/2224-3-0x0000000000400000-0x0000000000643000-memory.dmp

Filesize
2.3MB

Download
memory/2532-1-0x0000000000FA0000-0x0000000000FD8000-memory.dmp

Filesize
224KB

Download
memory/2532-14-0x00000000747A0000-0x0000000074E8E000-memory.dmp

Filesize
6.9MB

Download
memory/2532-0-0x00000000747AE000-0x00000000747AF000-memory.dmp

Filesize
4KB

Download
memory/2532-13-0x00000000747A0000-0x0000000074E8E000-memory.dmp

Filesize
6.9MB

Download