blustealer | 6b604d8b516eff23ab53c6f0ef4c723899ab1cee0d4cf0eb630d0a9292b7b384

General

Target

Scan No 123333_Inquiry.exe
Size

889KB
MD5

05363dd6abad7a6834d7428507fee92b
SHA1

4acf3b6402a55e803320f8a08eef6beb35a942cd
SHA256

6b604d8b516eff23ab53c6f0ef4c723899ab1cee0d4cf0eb630d0a9292b7b384
SHA512

626be2b7f68e18b827b3d05b203e83c78a18d2d0adef7db375edac095e5c7d6a1b5c7d2713a7a420f5bf980b7878e74a25c66ec2741beb2179cf05f30992dcb9
SSDEEP

12288:pnd+WNqxG6PI1/HV88BAo/dAoZqT5Dhdfo55GKGIQiCqHIe2Vg:pn1qxGiOH7VVFqW5bGKNIe

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-1-5-21-1013461898-3711306144-4198452673-1000\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
Key opened	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1740 set thread context of 4848	1740	Scan No 123333_Inquiry.exe	95
PID 4848 set thread context of 2216	4848	Scan No 123333_Inquiry.exe	96

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

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4848	Scan No 123333_Inquiry.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 1740 wrote to memory of 4848	1740	Scan No 123333_Inquiry.exe	95
PID 1740 wrote to memory of 4848	1740	Scan No 123333_Inquiry.exe	95
PID 1740 wrote to memory of 4848	1740	Scan No 123333_Inquiry.exe	95
PID 1740 wrote to memory of 4848	1740	Scan No 123333_Inquiry.exe	95
PID 1740 wrote to memory of 4848	1740	Scan No 123333_Inquiry.exe	95
PID 1740 wrote to memory of 4848	1740	Scan No 123333_Inquiry.exe	95
PID 1740 wrote to memory of 4848	1740	Scan No 123333_Inquiry.exe	95
PID 1740 wrote to memory of 4848	1740	Scan No 123333_Inquiry.exe	95
PID 4848 wrote to memory of 2216	4848	Scan No 123333_Inquiry.exe	96
PID 4848 wrote to memory of 2216	4848	Scan No 123333_Inquiry.exe	96
PID 4848 wrote to memory of 2216	4848	Scan No 123333_Inquiry.exe	96
PID 4848 wrote to memory of 2216	4848	Scan No 123333_Inquiry.exe	96
PID 4848 wrote to memory of 2216	4848	Scan No 123333_Inquiry.exe	96

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\Scan No 123333_Inquiry.exe
"C:\Users\Admin\AppData\Local\Temp\Scan No 123333_Inquiry.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1740
- C:\Users\Admin\AppData\Local\Temp\Scan No 123333_Inquiry.exe
  "C:\Users\Admin\AppData\Local\Temp\Scan No 123333_Inquiry.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4848
- - 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:2216

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/1740-139-0x00000000087F0000-0x000000000888C000-memory.dmp

Filesize
624KB

Download
memory/1740-134-0x0000000005A70000-0x0000000006014000-memory.dmp

Filesize
5.6MB

Download
memory/1740-135-0x00000000053D0000-0x0000000005462000-memory.dmp

Filesize
584KB

Download
memory/1740-136-0x0000000005640000-0x0000000005650000-memory.dmp

Filesize
64KB

Download
memory/1740-137-0x0000000005480000-0x000000000548A000-memory.dmp

Filesize
40KB

Download
memory/1740-138-0x0000000005640000-0x0000000005650000-memory.dmp

Filesize
64KB

Download
memory/1740-133-0x0000000000960000-0x0000000000A44000-memory.dmp

Filesize
912KB

Download
memory/2216-147-0x0000000000560000-0x00000000005C6000-memory.dmp

Filesize
408KB

Download
memory/2216-148-0x0000000002A20000-0x0000000002A30000-memory.dmp

Filesize
64KB

Download
memory/4848-140-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/4848-143-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/4848-146-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/4848-159-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download

Analysis

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