blustealer | b5145ccf5ded090001d3a5368ad32b5b4853f1b2153e55beae9ff0ba543e449e

General

Target

b5145ccf5ded090001d3a5368ad32b5b4853f1b2153e55beae9ff0ba543e449e.exe
Size

992KB
MD5

84bcb19b24fb3cf44188d8ea5e8a080f
SHA1

f6a1b91c039a3ce6cff9bf160725a4d2dae6df81
SHA256

b5145ccf5ded090001d3a5368ad32b5b4853f1b2153e55beae9ff0ba543e449e
SHA512

03658af693ef7d3754277e506e0aaf71402ab675ea4618adee8dcd34c50e1e49e5349dd6e92d6dd02f5abb72feb76d97aace506a6fc16f9ce01f1ad1f8902e32
SSDEEP

24576:8qPLaVUH999QYDtn9pvEni933gMciIX0GJ/llyoWD/H:fBH9QYDvpvwXMcpX0GJ/llQ

Score

10^/10

blustealer collection stealer

Malware Config

Extracted

Family

blustealer

C2

https://api.telegram.org/bot5797428905:AAGaRRXGZN1d9GGFd3sE5x4uSpCGF0PU4m4/sendMessage?chat_id=1251788325

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-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\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 4484 set thread context of 2344	4484	b5145ccf5ded090001d3a5368ad32b5b4853f1b2153e55beae9ff0ba543e449e.exe	92
PID 2344 set thread context of 3148	2344	b5145ccf5ded090001d3a5368ad32b5b4853f1b2153e55beae9ff0ba543e449e.exe	93

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

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

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4484	b5145ccf5ded090001d3a5368ad32b5b4853f1b2153e55beae9ff0ba543e449e.exe
4484	b5145ccf5ded090001d3a5368ad32b5b4853f1b2153e55beae9ff0ba543e449e.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4484	b5145ccf5ded090001d3a5368ad32b5b4853f1b2153e55beae9ff0ba543e449e.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2344	b5145ccf5ded090001d3a5368ad32b5b4853f1b2153e55beae9ff0ba543e449e.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 4484 wrote to memory of 2344	4484	b5145ccf5ded090001d3a5368ad32b5b4853f1b2153e55beae9ff0ba543e449e.exe	92
PID 4484 wrote to memory of 2344	4484	b5145ccf5ded090001d3a5368ad32b5b4853f1b2153e55beae9ff0ba543e449e.exe	92
PID 4484 wrote to memory of 2344	4484	b5145ccf5ded090001d3a5368ad32b5b4853f1b2153e55beae9ff0ba543e449e.exe	92
PID 4484 wrote to memory of 2344	4484	b5145ccf5ded090001d3a5368ad32b5b4853f1b2153e55beae9ff0ba543e449e.exe	92
PID 4484 wrote to memory of 2344	4484	b5145ccf5ded090001d3a5368ad32b5b4853f1b2153e55beae9ff0ba543e449e.exe	92
PID 4484 wrote to memory of 2344	4484	b5145ccf5ded090001d3a5368ad32b5b4853f1b2153e55beae9ff0ba543e449e.exe	92
PID 4484 wrote to memory of 2344	4484	b5145ccf5ded090001d3a5368ad32b5b4853f1b2153e55beae9ff0ba543e449e.exe	92
PID 4484 wrote to memory of 2344	4484	b5145ccf5ded090001d3a5368ad32b5b4853f1b2153e55beae9ff0ba543e449e.exe	92
PID 2344 wrote to memory of 3148	2344	b5145ccf5ded090001d3a5368ad32b5b4853f1b2153e55beae9ff0ba543e449e.exe	93
PID 2344 wrote to memory of 3148	2344	b5145ccf5ded090001d3a5368ad32b5b4853f1b2153e55beae9ff0ba543e449e.exe	93
PID 2344 wrote to memory of 3148	2344	b5145ccf5ded090001d3a5368ad32b5b4853f1b2153e55beae9ff0ba543e449e.exe	93
PID 2344 wrote to memory of 3148	2344	b5145ccf5ded090001d3a5368ad32b5b4853f1b2153e55beae9ff0ba543e449e.exe	93
PID 2344 wrote to memory of 3148	2344	b5145ccf5ded090001d3a5368ad32b5b4853f1b2153e55beae9ff0ba543e449e.exe	93

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\b5145ccf5ded090001d3a5368ad32b5b4853f1b2153e55beae9ff0ba543e449e.exe
"C:\Users\Admin\AppData\Local\Temp\b5145ccf5ded090001d3a5368ad32b5b4853f1b2153e55beae9ff0ba543e449e.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4484
- C:\Users\Admin\AppData\Local\Temp\b5145ccf5ded090001d3a5368ad32b5b4853f1b2153e55beae9ff0ba543e449e.exe
  "C:\Users\Admin\AppData\Local\Temp\b5145ccf5ded090001d3a5368ad32b5b4853f1b2153e55beae9ff0ba543e449e.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2344
- - 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:3148

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/2344-140-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2344-150-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2344-146-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2344-143-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/3148-148-0x0000000004C70000-0x0000000004C80000-memory.dmp

Filesize
64KB

Download
memory/3148-147-0x0000000000600000-0x0000000000666000-memory.dmp

Filesize
408KB

Download
memory/4484-136-0x0000000005670000-0x000000000567A000-memory.dmp

Filesize
40KB

Download
memory/4484-139-0x00000000073B0000-0x000000000744C000-memory.dmp

Filesize
624KB

Download
memory/4484-138-0x00000000055B0000-0x00000000055C0000-memory.dmp

Filesize
64KB

Download
memory/4484-137-0x00000000055B0000-0x00000000055C0000-memory.dmp

Filesize
64KB

Download
memory/4484-133-0x0000000000B20000-0x0000000000C1A000-memory.dmp

Filesize
1000KB

Download
memory/4484-135-0x00000000055D0000-0x0000000005662000-memory.dmp

Filesize
584KB

Download
memory/4484-134-0x0000000005C70000-0x0000000006214000-memory.dmp

Filesize
5.6MB

Download

Analysis

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