stealc | ce6c62ad7c5152f3040326bf6bfe1f0cd1b55dc87206c9ece0170353ed12ce25

General

Target

Installer.exe
Size

4.8MB
MD5

52cfd6dbedabd7f809a047e362c751da
SHA1

d00d0915c2a751e4ceab01d614f7c8508fcae911
SHA256

ce6c62ad7c5152f3040326bf6bfe1f0cd1b55dc87206c9ece0170353ed12ce25
SHA512

e84d4fd08eb4137735e6ede9d0aac1f039b21d0bfd924cc063720befdc50ab4b884804f22c775dc3c259c1f21e8d6aba0ff64c02efc9589b9ce9306958b2d1c6
SSDEEP

98304:QIvAtnTMOZK6LTZdy13tpcyl7UHM2gmHBFciu:9AtTMOZLdyeMecD

Score

10^/10

stealc default discovery stealer

Malware Config

Extracted

Family

stealc

Botnet

default

C2

http://185.161.248.78

Attributes

url_path
/5115dfcd1c0a61cc.php

rc4.plain

Signatures

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

Loads dropped DLL 1 IoCs

pid	Process
2420	Installer.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2420 set thread context of 2796	2420	Installer.exe	30

Program crash 2 IoCs

pid	pid_target	Process	procid_target
2728	2420	WerFault.exe	27
2648	2796	WerFault.exe	30

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	Installer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MsBuild.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 2420 wrote to memory of 2796	2420	Installer.exe	30
PID 2420 wrote to memory of 2796	2420	Installer.exe	30
PID 2420 wrote to memory of 2796	2420	Installer.exe	30
PID 2420 wrote to memory of 2796	2420	Installer.exe	30
PID 2420 wrote to memory of 2796	2420	Installer.exe	30
PID 2420 wrote to memory of 2796	2420	Installer.exe	30
PID 2420 wrote to memory of 2796	2420	Installer.exe	30
PID 2420 wrote to memory of 2796	2420	Installer.exe	30
PID 2420 wrote to memory of 2796	2420	Installer.exe	30
PID 2796 wrote to memory of 2648	2796	MsBuild.exe	31
PID 2796 wrote to memory of 2648	2796	MsBuild.exe	31
PID 2796 wrote to memory of 2648	2796	MsBuild.exe	31
PID 2796 wrote to memory of 2648	2796	MsBuild.exe	31
PID 2420 wrote to memory of 2728	2420	Installer.exe	32
PID 2420 wrote to memory of 2728	2420	Installer.exe	32
PID 2420 wrote to memory of 2728	2420	Installer.exe	32
PID 2420 wrote to memory of 2728	2420	Installer.exe	32

C:\Users\Admin\AppData\Local\Temp\Installer.exe
"C:\Users\Admin\AppData\Local\Temp\Installer.exe"
1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2420
- 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
  - Suspicious use of WriteProcessMemory
  PID:2796
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2796 -s 44
    3⤵
    - Program crash
    PID:2648
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2420 -s 36
  2⤵
  - Program crash
  PID:2728

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\Protect544cd51a.dll

Filesize
742KB

MD5
544cd51a596619b78e9b54b70088307d

SHA1
4769ddd2dbc1dc44b758964ed0bd231b85880b65

SHA256
dfce2d4d06de6452998b3c5b2dc33eaa6db2bd37810d04e3d02dc931887cfddd

SHA512
f56d8b81022bb132d40aa78596da39b5c212d13b84b5c7d2c576bbf403924f1d22e750de3b09d1be30aea359f1b72c5043b19685fc9bf06d8040bfee16b17719

Download Submit
memory/2420-11-0x0000000074E00000-0x00000000754EE000-memory.dmp

Filesize
6.9MB

Download
memory/2420-23-0x0000000074E00000-0x00000000754EE000-memory.dmp

Filesize
6.9MB

Download
memory/2420-3-0x0000000005630000-0x00000000057E8000-memory.dmp

Filesize
1.7MB

Download
memory/2420-4-0x0000000074E00000-0x00000000754EE000-memory.dmp

Filesize
6.9MB

Download
memory/2420-5-0x0000000006B90000-0x0000000006D22000-memory.dmp

Filesize
1.6MB

Download
memory/2420-1-0x0000000000A70000-0x0000000000F4A000-memory.dmp

Filesize
4.9MB

Download
memory/2420-10-0x0000000000310000-0x0000000000320000-memory.dmp

Filesize
64KB

Download
memory/2420-0-0x0000000074E0E000-0x0000000074E0F000-memory.dmp

Filesize
4KB

Download
memory/2420-2-0x0000000074E0E000-0x0000000074E0F000-memory.dmp

Filesize
4KB

Download
memory/2420-12-0x0000000074E00000-0x00000000754EE000-memory.dmp

Filesize
6.9MB

Download
memory/2420-13-0x0000000074E00000-0x00000000754EE000-memory.dmp

Filesize
6.9MB

Download
memory/2796-14-0x0000000000400000-0x000000000062E000-memory.dmp

Filesize
2.2MB

Download
memory/2796-20-0x0000000000400000-0x000000000062E000-memory.dmp

Filesize
2.2MB

Download
memory/2796-19-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/2796-17-0x0000000000400000-0x000000000062E000-memory.dmp

Filesize
2.2MB

Download
memory/2796-15-0x0000000000400000-0x000000000062E000-memory.dmp

Filesize
2.2MB

Download
memory/2796-16-0x0000000000400000-0x000000000062E000-memory.dmp

Filesize
2.2MB

Download
memory/2796-22-0x0000000000400000-0x000000000062E000-memory.dmp

Filesize
2.2MB

Download

Analysis

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