stealc | 1d8c4a07e0a84363f81091a8924bd38f01123ddd14bd2093e4836d074a88df72

Analysis

max time kernel
94s
max time network
96s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
09/10/2024, 17:19

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General

Target

1d8c4a07e0a84363f81091a8924bd38f01123ddd14bd2093e4836d074a88df72N.exe
Size

502KB
MD5

ddebfb0162635fe5e37a7c879abc8b20
SHA1

d92157d0db775fd1c34480c4879fbc0aab366186
SHA256

1d8c4a07e0a84363f81091a8924bd38f01123ddd14bd2093e4836d074a88df72
SHA512

37f664545939f59b829ff45e61e59a594c9f523645a057149263fd6108c3dba44d7d3b1e61fd3f5d02c1408983e1d51d2247fda0be1fe4a22c4bc3c341c98c51
SSDEEP

12288:8KuDhKFCHlqPEfZRRvU8rZzpLdVRkURZHUNecrKp:8KgKFmkwNrZvVRkm0hw

Score

10^/10

stealc default5_doz discovery stealer

Malware Config

Extracted

Family

stealc

Botnet

default5_doz

http://62.204.41.159

Attributes

url_path
/edd20096ecef326d.php

Signatures

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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4452 set thread context of 3880	4452	1d8c4a07e0a84363f81091a8924bd38f01123ddd14bd2093e4836d074a88df72N.exe	83

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3264	3880	WerFault.exe	83

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	1d8c4a07e0a84363f81091a8924bd38f01123ddd14bd2093e4836d074a88df72N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	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

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

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3880	MSBuild.exe
3880	MSBuild.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4452 wrote to memory of 3880	4452	1d8c4a07e0a84363f81091a8924bd38f01123ddd14bd2093e4836d074a88df72N.exe	83
PID 4452 wrote to memory of 3880	4452	1d8c4a07e0a84363f81091a8924bd38f01123ddd14bd2093e4836d074a88df72N.exe	83
PID 4452 wrote to memory of 3880	4452	1d8c4a07e0a84363f81091a8924bd38f01123ddd14bd2093e4836d074a88df72N.exe	83
PID 4452 wrote to memory of 3880	4452	1d8c4a07e0a84363f81091a8924bd38f01123ddd14bd2093e4836d074a88df72N.exe	83
PID 4452 wrote to memory of 3880	4452	1d8c4a07e0a84363f81091a8924bd38f01123ddd14bd2093e4836d074a88df72N.exe	83
PID 4452 wrote to memory of 3880	4452	1d8c4a07e0a84363f81091a8924bd38f01123ddd14bd2093e4836d074a88df72N.exe	83
PID 4452 wrote to memory of 3880	4452	1d8c4a07e0a84363f81091a8924bd38f01123ddd14bd2093e4836d074a88df72N.exe	83
PID 4452 wrote to memory of 3880	4452	1d8c4a07e0a84363f81091a8924bd38f01123ddd14bd2093e4836d074a88df72N.exe	83
PID 4452 wrote to memory of 3880	4452	1d8c4a07e0a84363f81091a8924bd38f01123ddd14bd2093e4836d074a88df72N.exe	83

C:\Users\Admin\AppData\Local\Temp\1d8c4a07e0a84363f81091a8924bd38f01123ddd14bd2093e4836d074a88df72N.exe
"C:\Users\Admin\AppData\Local\Temp\1d8c4a07e0a84363f81091a8924bd38f01123ddd14bd2093e4836d074a88df72N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4452
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:3880
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3880 -s 1236
    3⤵
    - Program crash
    PID:3264

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3880 -ip 3880
1⤵
PID:4600

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/3880-3-0x0000000000400000-0x0000000000661000-memory.dmp

Filesize
2.4MB

Download
memory/3880-1-0x0000000000400000-0x0000000000661000-memory.dmp

Filesize
2.4MB

Download
memory/3880-4-0x0000000000400000-0x0000000000661000-memory.dmp

Filesize
2.4MB

Download
memory/3880-5-0x0000000000400000-0x0000000000661000-memory.dmp

Filesize
2.4MB

Download
memory/3880-6-0x0000000000400000-0x0000000000661000-memory.dmp

Filesize
2.4MB

Download
memory/4452-0-0x00000000000F9000-0x00000000000FA000-memory.dmp

Filesize
4KB

Download