blustealer | 781a83f3ac8bb7d765db4ad32fcd1e07e585c533f300ddc847ea93d420c6d64c

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
25-10-2022 12:35

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

Details & Invoices.exe
Size

1.1MB
MD5

6518419b9de76da716fb64120d84efb2
SHA1

36c349c1d03b67c799d8b96bc76d9fea40f25e1f
SHA256

781a83f3ac8bb7d765db4ad32fcd1e07e585c533f300ddc847ea93d420c6d64c
SHA512

4da469d1051e44453c1575c76178dbff421a47e48694a35d1b15179307121333ffc45b5ec79a98eb70c3a7479224df9edf0eff50d0f2264c8c6f31df6b47b620
SSDEEP

24576:D1o9IkBL4tXTL5g7tFUBde4x9jBbke0fFkd7:D2IDLKBWO899bke0qd

Score

10^/10

blustealer collection stealer

Malware Config

Extracted

Family

blustealer

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\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
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

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2820 set thread context of 4340	2820	Details & Invoices.exe	89
PID 4340 set thread context of 4640	4340	Details & Invoices.exe	90

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	40	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4340	Details & Invoices.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 2820 wrote to memory of 4340	2820	Details & Invoices.exe	89
PID 2820 wrote to memory of 4340	2820	Details & Invoices.exe	89
PID 2820 wrote to memory of 4340	2820	Details & Invoices.exe	89
PID 2820 wrote to memory of 4340	2820	Details & Invoices.exe	89
PID 2820 wrote to memory of 4340	2820	Details & Invoices.exe	89
PID 2820 wrote to memory of 4340	2820	Details & Invoices.exe	89
PID 2820 wrote to memory of 4340	2820	Details & Invoices.exe	89
PID 2820 wrote to memory of 4340	2820	Details & Invoices.exe	89
PID 4340 wrote to memory of 4640	4340	Details & Invoices.exe	90
PID 4340 wrote to memory of 4640	4340	Details & Invoices.exe	90
PID 4340 wrote to memory of 4640	4340	Details & Invoices.exe	90
PID 4340 wrote to memory of 4640	4340	Details & Invoices.exe	90
PID 4340 wrote to memory of 4640	4340	Details & Invoices.exe	90

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\Details & Invoices.exe
"C:\Users\Admin\AppData\Local\Temp\Details & Invoices.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2820
- C:\Users\Admin\AppData\Local\Temp\Details & Invoices.exe
  "C:\Users\Admin\AppData\Local\Temp\Details & Invoices.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4340
- - 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:4640

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Email Collection

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/2820-132-0x0000000000260000-0x000000000037E000-memory.dmp

Filesize
1.1MB

Download
memory/2820-133-0x0000000005360000-0x0000000005904000-memory.dmp

Filesize
5.6MB

Download
memory/2820-134-0x0000000004CF0000-0x0000000004D82000-memory.dmp

Filesize
584KB

Download
memory/2820-135-0x0000000004EB0000-0x0000000004EBA000-memory.dmp

Filesize
40KB

Download
memory/2820-136-0x0000000008600000-0x000000000869C000-memory.dmp

Filesize
624KB

Download
memory/2820-137-0x000000000B2E0000-0x000000000B346000-memory.dmp

Filesize
408KB

Download
memory/4340-139-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/4340-141-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/4340-144-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/4640-146-0x0000000001200000-0x0000000001266000-memory.dmp

Filesize
408KB

Download