blustealer | b092e2388c1f790870d97b73440930d4e0c134610c17091e8987622745a0cc48

Analysis

max time kernel
146s
max time network
145s
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 07:33

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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-1-5-21-1529757233-3489015626-3409890339-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\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 1156 set thread context of 4716	1156	POHT320ML-230000026.exe	92
PID 4716 set thread context of 1040	4716	POHT320ML-230000026.exe	93

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

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4716	POHT320ML-230000026.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 1156 wrote to memory of 4716	1156	POHT320ML-230000026.exe	92
PID 1156 wrote to memory of 4716	1156	POHT320ML-230000026.exe	92
PID 1156 wrote to memory of 4716	1156	POHT320ML-230000026.exe	92
PID 1156 wrote to memory of 4716	1156	POHT320ML-230000026.exe	92
PID 1156 wrote to memory of 4716	1156	POHT320ML-230000026.exe	92
PID 1156 wrote to memory of 4716	1156	POHT320ML-230000026.exe	92
PID 1156 wrote to memory of 4716	1156	POHT320ML-230000026.exe	92
PID 1156 wrote to memory of 4716	1156	POHT320ML-230000026.exe	92
PID 4716 wrote to memory of 1040	4716	POHT320ML-230000026.exe	93
PID 4716 wrote to memory of 1040	4716	POHT320ML-230000026.exe	93
PID 4716 wrote to memory of 1040	4716	POHT320ML-230000026.exe	93
PID 4716 wrote to memory of 1040	4716	POHT320ML-230000026.exe	93
PID 4716 wrote to memory of 1040	4716	POHT320ML-230000026.exe	93

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\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:1156
- 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:4716
- - 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:1040

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

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Downloads

memory/1040-147-0x0000000000B00000-0x0000000000B66000-memory.dmp

Filesize
408KB

Download
memory/1156-133-0x0000000000D70000-0x0000000000E74000-memory.dmp

Filesize
1.0MB

Download
memory/1156-134-0x0000000005C80000-0x0000000006224000-memory.dmp

Filesize
5.6MB

Download
memory/1156-135-0x0000000005770000-0x0000000005802000-memory.dmp

Filesize
584KB

Download
memory/1156-136-0x0000000005720000-0x000000000572A000-memory.dmp

Filesize
40KB

Download
memory/1156-137-0x0000000005930000-0x0000000005940000-memory.dmp

Filesize
64KB

Download
memory/1156-138-0x0000000005930000-0x0000000005940000-memory.dmp

Filesize
64KB

Download
memory/1156-139-0x0000000008A60000-0x0000000008AFC000-memory.dmp

Filesize
624KB

Download
memory/4716-140-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/4716-143-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/4716-146-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/4716-149-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download