blustealer | b092e2388c1f790870d97b73440930d4e0c134610c17091e8987622745a0cc48

Analysis

max time kernel
146s
max time network
144s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
08-05-2023 07:31

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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

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-1-5-21-1675742406-747946869-1029867430-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\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 2232 set thread context of 3048	2232	POHT320ML-230000026.exe	91
PID 3048 set thread context of 4756	3048	POHT320ML-230000026.exe	92

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

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3048	POHT320ML-230000026.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 2232 wrote to memory of 3048	2232	POHT320ML-230000026.exe	91
PID 2232 wrote to memory of 3048	2232	POHT320ML-230000026.exe	91
PID 2232 wrote to memory of 3048	2232	POHT320ML-230000026.exe	91
PID 2232 wrote to memory of 3048	2232	POHT320ML-230000026.exe	91
PID 2232 wrote to memory of 3048	2232	POHT320ML-230000026.exe	91
PID 2232 wrote to memory of 3048	2232	POHT320ML-230000026.exe	91
PID 2232 wrote to memory of 3048	2232	POHT320ML-230000026.exe	91
PID 2232 wrote to memory of 3048	2232	POHT320ML-230000026.exe	91
PID 3048 wrote to memory of 4756	3048	POHT320ML-230000026.exe	92
PID 3048 wrote to memory of 4756	3048	POHT320ML-230000026.exe	92
PID 3048 wrote to memory of 4756	3048	POHT320ML-230000026.exe	92
PID 3048 wrote to memory of 4756	3048	POHT320ML-230000026.exe	92
PID 3048 wrote to memory of 4756	3048	POHT320ML-230000026.exe	92

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\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:2232
- 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:3048
- - 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:4756

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Email Collection

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2232-139-0x0000000008680000-0x000000000871C000-memory.dmp

Filesize
624KB

Download
memory/2232-134-0x0000000005550000-0x0000000005AF4000-memory.dmp

Filesize
5.6MB

Download
memory/2232-135-0x0000000004FA0000-0x0000000005032000-memory.dmp

Filesize
584KB

Download
memory/2232-136-0x00000000054C0000-0x00000000054CA000-memory.dmp

Filesize
40KB

Download
memory/2232-137-0x0000000005150000-0x0000000005160000-memory.dmp

Filesize
64KB

Download
memory/2232-138-0x0000000005150000-0x0000000005160000-memory.dmp

Filesize
64KB

Download
memory/2232-133-0x00000000004D0000-0x00000000005D4000-memory.dmp

Filesize
1.0MB

Download
memory/3048-140-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/3048-143-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/3048-146-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/3048-159-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/4756-147-0x0000000000640000-0x00000000006A6000-memory.dmp

Filesize
408KB

Download
memory/4756-148-0x0000000001050000-0x0000000001060000-memory.dmp

Filesize
64KB

Download