blustealer | 11056e183ec9ae4bad6f5c180fc37460d504e13776d7214b2a8b60fad449bfeb

General

Target

781a83f3ac8bb7d765db4ad32fcd1e07e585c533f300ddc847ea93d420c6d64c.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

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-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\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 1492 set thread context of 944	1492	781a83f3ac8bb7d765db4ad32fcd1e07e585c533f300ddc847ea93d420c6d64c.exe	27
PID 944 set thread context of 1704	944	781a83f3ac8bb7d765db4ad32fcd1e07e585c533f300ddc847ea93d420c6d64c.exe	28

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

System Information Discovery
T1082

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
944	781a83f3ac8bb7d765db4ad32fcd1e07e585c533f300ddc847ea93d420c6d64c.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 1492 wrote to memory of 944	1492	781a83f3ac8bb7d765db4ad32fcd1e07e585c533f300ddc847ea93d420c6d64c.exe	27
PID 1492 wrote to memory of 944	1492	781a83f3ac8bb7d765db4ad32fcd1e07e585c533f300ddc847ea93d420c6d64c.exe	27
PID 1492 wrote to memory of 944	1492	781a83f3ac8bb7d765db4ad32fcd1e07e585c533f300ddc847ea93d420c6d64c.exe	27
PID 1492 wrote to memory of 944	1492	781a83f3ac8bb7d765db4ad32fcd1e07e585c533f300ddc847ea93d420c6d64c.exe	27
PID 1492 wrote to memory of 944	1492	781a83f3ac8bb7d765db4ad32fcd1e07e585c533f300ddc847ea93d420c6d64c.exe	27
PID 1492 wrote to memory of 944	1492	781a83f3ac8bb7d765db4ad32fcd1e07e585c533f300ddc847ea93d420c6d64c.exe	27
PID 1492 wrote to memory of 944	1492	781a83f3ac8bb7d765db4ad32fcd1e07e585c533f300ddc847ea93d420c6d64c.exe	27
PID 1492 wrote to memory of 944	1492	781a83f3ac8bb7d765db4ad32fcd1e07e585c533f300ddc847ea93d420c6d64c.exe	27
PID 1492 wrote to memory of 944	1492	781a83f3ac8bb7d765db4ad32fcd1e07e585c533f300ddc847ea93d420c6d64c.exe	27
PID 944 wrote to memory of 1704	944	781a83f3ac8bb7d765db4ad32fcd1e07e585c533f300ddc847ea93d420c6d64c.exe	28
PID 944 wrote to memory of 1704	944	781a83f3ac8bb7d765db4ad32fcd1e07e585c533f300ddc847ea93d420c6d64c.exe	28
PID 944 wrote to memory of 1704	944	781a83f3ac8bb7d765db4ad32fcd1e07e585c533f300ddc847ea93d420c6d64c.exe	28
PID 944 wrote to memory of 1704	944	781a83f3ac8bb7d765db4ad32fcd1e07e585c533f300ddc847ea93d420c6d64c.exe	28
PID 944 wrote to memory of 1704	944	781a83f3ac8bb7d765db4ad32fcd1e07e585c533f300ddc847ea93d420c6d64c.exe	28
PID 944 wrote to memory of 1704	944	781a83f3ac8bb7d765db4ad32fcd1e07e585c533f300ddc847ea93d420c6d64c.exe	28
PID 944 wrote to memory of 1704	944	781a83f3ac8bb7d765db4ad32fcd1e07e585c533f300ddc847ea93d420c6d64c.exe	28
PID 944 wrote to memory of 1704	944	781a83f3ac8bb7d765db4ad32fcd1e07e585c533f300ddc847ea93d420c6d64c.exe	28
PID 944 wrote to memory of 1704	944	781a83f3ac8bb7d765db4ad32fcd1e07e585c533f300ddc847ea93d420c6d64c.exe	28

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\781a83f3ac8bb7d765db4ad32fcd1e07e585c533f300ddc847ea93d420c6d64c.exe
"C:\Users\Admin\AppData\Local\Temp\781a83f3ac8bb7d765db4ad32fcd1e07e585c533f300ddc847ea93d420c6d64c.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1492
- C:\Users\Admin\AppData\Local\Temp\781a83f3ac8bb7d765db4ad32fcd1e07e585c533f300ddc847ea93d420c6d64c.exe
  "C:\Users\Admin\AppData\Local\Temp\781a83f3ac8bb7d765db4ad32fcd1e07e585c533f300ddc847ea93d420c6d64c.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:944
- - 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:1704

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

Loading Replay Monitor...

Downloads

memory/944-63-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/944-83-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/944-82-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/944-68-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/944-65-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/944-60-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/944-61-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1492-59-0x0000000004FD0000-0x0000000005044000-memory.dmp

Filesize
464KB

Download
memory/1492-54-0x0000000000EC0000-0x0000000000FDE000-memory.dmp

Filesize
1.1MB

Download
memory/1492-58-0x000000000A330000-0x000000000A3FA000-memory.dmp

Filesize
808KB

Download
memory/1492-57-0x00000000005D0000-0x00000000005DC000-memory.dmp

Filesize
48KB

Download
memory/1492-56-0x00000000005B0000-0x00000000005C8000-memory.dmp

Filesize
96KB

Download
memory/1492-55-0x0000000076121000-0x0000000076123000-memory.dmp

Filesize
8KB

Download
memory/1704-72-0x0000000000250000-0x00000000002B6000-memory.dmp

Filesize
408KB

Download
memory/1704-74-0x0000000000250000-0x00000000002B6000-memory.dmp

Filesize
408KB

Download
memory/1704-77-0x0000000000250000-0x00000000002B6000-memory.dmp

Filesize
408KB

Download
memory/1704-79-0x0000000000250000-0x00000000002B6000-memory.dmp

Filesize
408KB

Download
memory/1704-81-0x0000000004480000-0x000000000453C000-memory.dmp

Filesize
752KB

Download

Analysis

Sharing