blustealer | 06b3e35f665e7a38fd7439681983e2123a0ffc72effeaabad3e41a0c190cd255

General

Target

Quotation_pdf.exe
Size

910KB
MD5

6be7360d15864b39760f38be37d21b32
SHA1

9a85a30228996405f11807cbbf8d9cd7e47d45cc
SHA256

0f71aedb95163de525fa395b1a444f48222bc28b70521bff45467cbf98b63b9a
SHA512

b98ad8f32c4632c403466e27161518c991b6c9395da27a743bc3af6ca2a7c632b595ce44fd7d09c6603212cdab9dcb220db76f80399719f7097451a8190f2a0e
SSDEEP

24576:S0PXkGzgCC4mEIXxiZiX6vjgxxUtqY6VUOP:DPng74mJxmiX6vjgEb2

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-1-5-21-3430344531-3702557399-3004411149-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000\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 1168 set thread context of 520	1168	Quotation_pdf.exe	28
PID 520 set thread context of 1708	520	Quotation_pdf.exe	29

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
520	Quotation_pdf.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 1168 wrote to memory of 520	1168	Quotation_pdf.exe	28
PID 1168 wrote to memory of 520	1168	Quotation_pdf.exe	28
PID 1168 wrote to memory of 520	1168	Quotation_pdf.exe	28
PID 1168 wrote to memory of 520	1168	Quotation_pdf.exe	28
PID 1168 wrote to memory of 520	1168	Quotation_pdf.exe	28
PID 1168 wrote to memory of 520	1168	Quotation_pdf.exe	28
PID 1168 wrote to memory of 520	1168	Quotation_pdf.exe	28
PID 1168 wrote to memory of 520	1168	Quotation_pdf.exe	28
PID 1168 wrote to memory of 520	1168	Quotation_pdf.exe	28
PID 520 wrote to memory of 1708	520	Quotation_pdf.exe	29
PID 520 wrote to memory of 1708	520	Quotation_pdf.exe	29
PID 520 wrote to memory of 1708	520	Quotation_pdf.exe	29
PID 520 wrote to memory of 1708	520	Quotation_pdf.exe	29
PID 520 wrote to memory of 1708	520	Quotation_pdf.exe	29
PID 520 wrote to memory of 1708	520	Quotation_pdf.exe	29
PID 520 wrote to memory of 1708	520	Quotation_pdf.exe	29
PID 520 wrote to memory of 1708	520	Quotation_pdf.exe	29
PID 520 wrote to memory of 1708	520	Quotation_pdf.exe	29

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\Quotation_pdf.exe
"C:\Users\Admin\AppData\Local\Temp\Quotation_pdf.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1168
- C:\Users\Admin\AppData\Local\Temp\Quotation_pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\Quotation_pdf.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:520
- - 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:1708

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/520-64-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/520-83-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/520-74-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/520-71-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/520-69-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/520-68-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/520-66-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/520-65-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1168-60-0x0000000000490000-0x000000000049C000-memory.dmp

Filesize
48KB

Download
memory/1168-57-0x0000000004DE0000-0x0000000004E20000-memory.dmp

Filesize
256KB

Download
memory/1168-62-0x0000000000A50000-0x0000000000A56000-memory.dmp

Filesize
24KB

Download
memory/1168-61-0x00000000051A0000-0x0000000005258000-memory.dmp

Filesize
736KB

Download
memory/1168-54-0x00000000011B0000-0x000000000129A000-memory.dmp

Filesize
936KB

Download
memory/1168-59-0x0000000004DE0000-0x0000000004E20000-memory.dmp

Filesize
256KB

Download
memory/1168-58-0x0000000004DE0000-0x0000000004E20000-memory.dmp

Filesize
256KB

Download
memory/1168-63-0x00000000054B0000-0x0000000005526000-memory.dmp

Filesize
472KB

Download
memory/1168-56-0x0000000000480000-0x0000000000494000-memory.dmp

Filesize
80KB

Download
memory/1168-55-0x0000000004DE0000-0x0000000004E20000-memory.dmp

Filesize
256KB

Download
memory/1708-76-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/1708-77-0x0000000000090000-0x00000000000F6000-memory.dmp

Filesize
408KB

Download
memory/1708-81-0x0000000000090000-0x00000000000F6000-memory.dmp

Filesize
408KB

Download
memory/1708-79-0x0000000000090000-0x00000000000F6000-memory.dmp

Filesize
408KB

Download
memory/1708-82-0x0000000004A20000-0x0000000004ADC000-memory.dmp

Filesize
752KB

Download
memory/1708-75-0x0000000000090000-0x00000000000F6000-memory.dmp

Filesize
408KB

Download

Analysis

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