blustealer | 90cfa88b710e25a9a1219c67738a891f052a33085a5aca2797524612b016249e

General

Target

SecuriteInfo.com.Win32.PWSX-gen.18116.exe
Size

1.0MB
MD5

f52b4684b9c1d2a390e98098125dd1b4
SHA1

3164c21a75ba0de36200d5ef1cb7ee81c2203a45
SHA256

90cfa88b710e25a9a1219c67738a891f052a33085a5aca2797524612b016249e
SHA512

f53be419d3b36d0df6e748b94032a11468358f1e9f5e50803016567c3b2dc59fa8e287cbbb7320338858e43f413045f5a7662f1f93556a3ba8be3fab6a09e14f
SSDEEP

12288:1zE35FZjxFmdVht9TGclUy7jfV6l53Hk1oJ9fVid6a/g5mLUqrjds118p4QCf:qFWLzTl9Na46fEb/g5ovdNm

Score

10^/10

blustealer collection stealer

Malware Config

Extracted

Family

blustealer

C2

https://api.telegram.org/bot5450700540:AAEJyEEV8BKgYUKmnCPZxp19kD9GVSRup5M/sendMessage?chat_id=5422342474

Signatures

BluStealer
A Modular information stealer written in Visual Basic.
stealer blustealer

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3920 set thread context of 1780	3920	SecuriteInfo.com.Win32.PWSX-gen.18116.exe	100
PID 1780 set thread context of 3912	1780	SecuriteInfo.com.Win32.PWSX-gen.18116.exe	101

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

System Information Discovery
T1082

Script User-Agent 1 IoCs

Uses user-agent string associated with script host/environment.

description	flow	ioc
HTTP User-Agent header	59	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1780	SecuriteInfo.com.Win32.PWSX-gen.18116.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 3920 wrote to memory of 1780	3920	SecuriteInfo.com.Win32.PWSX-gen.18116.exe	100
PID 3920 wrote to memory of 1780	3920	SecuriteInfo.com.Win32.PWSX-gen.18116.exe	100
PID 3920 wrote to memory of 1780	3920	SecuriteInfo.com.Win32.PWSX-gen.18116.exe	100
PID 3920 wrote to memory of 1780	3920	SecuriteInfo.com.Win32.PWSX-gen.18116.exe	100
PID 3920 wrote to memory of 1780	3920	SecuriteInfo.com.Win32.PWSX-gen.18116.exe	100
PID 3920 wrote to memory of 1780	3920	SecuriteInfo.com.Win32.PWSX-gen.18116.exe	100
PID 3920 wrote to memory of 1780	3920	SecuriteInfo.com.Win32.PWSX-gen.18116.exe	100
PID 3920 wrote to memory of 1780	3920	SecuriteInfo.com.Win32.PWSX-gen.18116.exe	100
PID 1780 wrote to memory of 3912	1780	SecuriteInfo.com.Win32.PWSX-gen.18116.exe	101
PID 1780 wrote to memory of 3912	1780	SecuriteInfo.com.Win32.PWSX-gen.18116.exe	101
PID 1780 wrote to memory of 3912	1780	SecuriteInfo.com.Win32.PWSX-gen.18116.exe	101
PID 1780 wrote to memory of 3912	1780	SecuriteInfo.com.Win32.PWSX-gen.18116.exe	101
PID 1780 wrote to memory of 3912	1780	SecuriteInfo.com.Win32.PWSX-gen.18116.exe	101

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.PWSX-gen.18116.exe
"C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.PWSX-gen.18116.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3920
- C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.PWSX-gen.18116.exe
  "C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.PWSX-gen.18116.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1780
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
    C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
    3⤵
    - Accesses Microsoft Outlook profiles
    - outlook_office_path
    - outlook_win_path
    PID:3912

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Email Collection

1

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1780-144-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1780-139-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1780-141-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1780-145-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/3912-147-0x0000000000B40000-0x0000000000BA6000-memory.dmp

Filesize
408KB

Download
memory/3920-133-0x0000000005CB0000-0x0000000006254000-memory.dmp

Filesize
5.6MB

Download
memory/3920-134-0x00000000055F0000-0x0000000005682000-memory.dmp

Filesize
584KB

Download
memory/3920-135-0x0000000005690000-0x000000000569A000-memory.dmp

Filesize
40KB

Download
memory/3920-136-0x0000000009110000-0x00000000091AC000-memory.dmp

Filesize
624KB

Download
memory/3920-137-0x0000000008D30000-0x0000000008D96000-memory.dmp

Filesize
408KB

Download
memory/3920-132-0x0000000000B30000-0x0000000000C42000-memory.dmp

Filesize
1.1MB

Download

Analysis

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