blustealer | b092e2388c1f790870d97b73440930d4e0c134610c17091e8987622745a0cc48

General

Target

POHT320ML-230000026.exe
Size

1012KB
MD5

1e83c4305573d2474cff4b83f5f5566e
SHA1

4ae7e03082ec4660fe2787c0b512d21dc5367998
SHA256

b092e2388c1f790870d97b73440930d4e0c134610c17091e8987622745a0cc48
SHA512

fb470979803e8e9ffbd40dc6564e348719436b7ac6cdd05a1d41bc6e89682c344751f948d9e3d8531e620453a725c9c1694e51bacbfd89f8f549e37ee5f85ac5
SSDEEP

12288:/cgBnwlSWJwXmZbMRaVb1tQUlhJGEy24XrmTVBHZowtet8zzQRDmwsEiHXl6mhuw:di9gRchxl3Z34XrmJGqOFi3MmA

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-1-5-21-3499517378-2376672570-1134980332-1000\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 2040 set thread context of 540	2040	POHT320ML-230000026.exe	28
PID 540 set thread context of 1684	540	POHT320ML-230000026.exe	29

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

System Information Discovery
T1082

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
540	POHT320ML-230000026.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 2040 wrote to memory of 540	2040	POHT320ML-230000026.exe	28
PID 2040 wrote to memory of 540	2040	POHT320ML-230000026.exe	28
PID 2040 wrote to memory of 540	2040	POHT320ML-230000026.exe	28
PID 2040 wrote to memory of 540	2040	POHT320ML-230000026.exe	28
PID 2040 wrote to memory of 540	2040	POHT320ML-230000026.exe	28
PID 2040 wrote to memory of 540	2040	POHT320ML-230000026.exe	28
PID 2040 wrote to memory of 540	2040	POHT320ML-230000026.exe	28
PID 2040 wrote to memory of 540	2040	POHT320ML-230000026.exe	28
PID 2040 wrote to memory of 540	2040	POHT320ML-230000026.exe	28
PID 540 wrote to memory of 1684	540	POHT320ML-230000026.exe	29
PID 540 wrote to memory of 1684	540	POHT320ML-230000026.exe	29
PID 540 wrote to memory of 1684	540	POHT320ML-230000026.exe	29
PID 540 wrote to memory of 1684	540	POHT320ML-230000026.exe	29
PID 540 wrote to memory of 1684	540	POHT320ML-230000026.exe	29
PID 540 wrote to memory of 1684	540	POHT320ML-230000026.exe	29
PID 540 wrote to memory of 1684	540	POHT320ML-230000026.exe	29
PID 540 wrote to memory of 1684	540	POHT320ML-230000026.exe	29
PID 540 wrote to memory of 1684	540	POHT320ML-230000026.exe	29

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\POHT320ML-230000026.exe
"C:\Users\Admin\AppData\Local\Temp\POHT320ML-230000026.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2040
- C:\Users\Admin\AppData\Local\Temp\POHT320ML-230000026.exe
  "C:\Users\Admin\AppData\Local\Temp\POHT320ML-230000026.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:540
- - 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:1684

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/540-62-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/540-80-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/540-71-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/540-68-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/540-66-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/540-65-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/540-63-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/540-61-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1684-74-0x0000000000090000-0x00000000000F6000-memory.dmp

Filesize
408KB

Download
memory/1684-72-0x0000000000090000-0x00000000000F6000-memory.dmp

Filesize
408KB

Download
memory/1684-73-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/1684-76-0x0000000000090000-0x00000000000F6000-memory.dmp

Filesize
408KB

Download
memory/1684-78-0x0000000000090000-0x00000000000F6000-memory.dmp

Filesize
408KB

Download
memory/1684-79-0x00000000007F0000-0x00000000008AC000-memory.dmp

Filesize
752KB

Download
memory/2040-60-0x000000000AA60000-0x000000000AAF2000-memory.dmp

Filesize
584KB

Download
memory/2040-59-0x0000000008240000-0x0000000008306000-memory.dmp

Filesize
792KB

Download
memory/2040-58-0x0000000000640000-0x000000000064C000-memory.dmp

Filesize
48KB

Download
memory/2040-57-0x0000000004910000-0x0000000004950000-memory.dmp

Filesize
256KB

Download
memory/2040-56-0x00000000003C0000-0x00000000003D2000-memory.dmp

Filesize
72KB

Download
memory/2040-54-0x00000000010D0000-0x00000000011D4000-memory.dmp

Filesize
1.0MB

Download
memory/2040-55-0x0000000004910000-0x0000000004950000-memory.dmp

Filesize
256KB

Download

Analysis

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