blustealer | 2a4fe1060c15849fad34754e02f548fc250f8749ab923f929c7497c0614c760b

General

Target

RFQ for supply of Stock Replenishment FI-2023-089.exe
Size

833KB
MD5

c3d43cf53c510fed679a621e5c9d0aea
SHA1

a8d367631072c110d99369209782f8ddd6de673f
SHA256

2a4fe1060c15849fad34754e02f548fc250f8749ab923f929c7497c0614c760b
SHA512

19d006881997d35cc57fff45b1e216d601d83b15045dcc75f8b6b617bb797c838a7cf0c3e0eec1e016817d5f3f429650a88a914bfaa9b9deeb62af18255437a8
SSDEEP

12288:El4SNuCXLzEfF0S2FXtBvFD3oNQLp1K6YZQ0MASVbNqRPXnBGTJ:EG9CvEfFv23o2LDK6WQOSVpwXnB2

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-1-5-21-3499517378-2376672570-1134980332-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000\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 848 set thread context of 672	848	RFQ for supply of Stock Replenishment FI-2023-089.exe	27
PID 672 set thread context of 1916	672	RFQ for supply of Stock Replenishment FI-2023-089.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
672	RFQ for supply of Stock Replenishment FI-2023-089.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 848 wrote to memory of 672	848	RFQ for supply of Stock Replenishment FI-2023-089.exe	27
PID 848 wrote to memory of 672	848	RFQ for supply of Stock Replenishment FI-2023-089.exe	27
PID 848 wrote to memory of 672	848	RFQ for supply of Stock Replenishment FI-2023-089.exe	27
PID 848 wrote to memory of 672	848	RFQ for supply of Stock Replenishment FI-2023-089.exe	27
PID 848 wrote to memory of 672	848	RFQ for supply of Stock Replenishment FI-2023-089.exe	27
PID 848 wrote to memory of 672	848	RFQ for supply of Stock Replenishment FI-2023-089.exe	27
PID 848 wrote to memory of 672	848	RFQ for supply of Stock Replenishment FI-2023-089.exe	27
PID 848 wrote to memory of 672	848	RFQ for supply of Stock Replenishment FI-2023-089.exe	27
PID 848 wrote to memory of 672	848	RFQ for supply of Stock Replenishment FI-2023-089.exe	27
PID 672 wrote to memory of 1916	672	RFQ for supply of Stock Replenishment FI-2023-089.exe	28
PID 672 wrote to memory of 1916	672	RFQ for supply of Stock Replenishment FI-2023-089.exe	28
PID 672 wrote to memory of 1916	672	RFQ for supply of Stock Replenishment FI-2023-089.exe	28
PID 672 wrote to memory of 1916	672	RFQ for supply of Stock Replenishment FI-2023-089.exe	28
PID 672 wrote to memory of 1916	672	RFQ for supply of Stock Replenishment FI-2023-089.exe	28
PID 672 wrote to memory of 1916	672	RFQ for supply of Stock Replenishment FI-2023-089.exe	28
PID 672 wrote to memory of 1916	672	RFQ for supply of Stock Replenishment FI-2023-089.exe	28
PID 672 wrote to memory of 1916	672	RFQ for supply of Stock Replenishment FI-2023-089.exe	28
PID 672 wrote to memory of 1916	672	RFQ for supply of Stock Replenishment FI-2023-089.exe	28

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\RFQ for supply of Stock Replenishment FI-2023-089.exe
"C:\Users\Admin\AppData\Local\Temp\RFQ for supply of Stock Replenishment FI-2023-089.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:848
- C:\Users\Admin\AppData\Local\Temp\RFQ for supply of Stock Replenishment FI-2023-089.exe
  "C:\Users\Admin\AppData\Local\Temp\RFQ for supply of Stock Replenishment FI-2023-089.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:672
- - 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:1916

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/672-62-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/672-79-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/672-70-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/672-67-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/672-65-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/672-64-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/672-60-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/672-61-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/848-59-0x0000000004D80000-0x0000000004DF6000-memory.dmp

Filesize
472KB

Download
memory/848-54-0x0000000000060000-0x0000000000136000-memory.dmp

Filesize
856KB

Download
memory/848-58-0x0000000005420000-0x00000000054CC000-memory.dmp

Filesize
688KB

Download
memory/848-57-0x0000000001E70000-0x0000000001E7C000-memory.dmp

Filesize
48KB

Download
memory/848-56-0x0000000000450000-0x0000000000464000-memory.dmp

Filesize
80KB

Download
memory/848-55-0x0000000004C20000-0x0000000004C60000-memory.dmp

Filesize
256KB

Download
memory/1916-72-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/1916-71-0x00000000001F0000-0x0000000000256000-memory.dmp

Filesize
408KB

Download
memory/1916-73-0x00000000001F0000-0x0000000000256000-memory.dmp

Filesize
408KB

Download
memory/1916-75-0x00000000001F0000-0x0000000000256000-memory.dmp

Filesize
408KB

Download
memory/1916-77-0x00000000001F0000-0x0000000000256000-memory.dmp

Filesize
408KB

Download
memory/1916-78-0x0000000000B30000-0x0000000000BEC000-memory.dmp

Filesize
752KB

Download

Analysis

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