blustealer | 3a1a57f4172c2c2b58c164dd690b3d8928304dfc0455c604d061a80c7120c3c5

Analysis

max time kernel
146s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
20-10-2022 15:43

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General

Target

DHL_Y_DO.EXE.exe
Size

1.0MB
MD5

e15f0572398fc74b2b421e8587180571
SHA1

8e62593eafc506f657cead19df4a97c29177faf2
SHA256

3a1a57f4172c2c2b58c164dd690b3d8928304dfc0455c604d061a80c7120c3c5
SHA512

170bb25de8d34400f07f7b016114ac5b5416d1971c697b65c6631689b7f8c8ed573e689a502486fb7d1f4400edc19f83c0fb3fed05aee4893856ad44c6af0ba7
SSDEEP

12288:cofEu5grX48OvLwUlzXmf9fw9F7I0KzlO/cZ6FeejWRbTD5x9GRnGCZn0lkO:mX45LmNwLMzlKcZ6FliJ31yXWl1

Score

10^/10

blustealer collection stealer

Malware Config

Extracted

Family

blustealer

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-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\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 1400 set thread context of 5008	1400	DHL_Y_DO.EXE.exe	92
PID 5008 set thread context of 5004	5008	DHL_Y_DO.EXE.exe	93

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

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

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
5008	DHL_Y_DO.EXE.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 1400 wrote to memory of 5008	1400	DHL_Y_DO.EXE.exe	92
PID 1400 wrote to memory of 5008	1400	DHL_Y_DO.EXE.exe	92
PID 1400 wrote to memory of 5008	1400	DHL_Y_DO.EXE.exe	92
PID 1400 wrote to memory of 5008	1400	DHL_Y_DO.EXE.exe	92
PID 1400 wrote to memory of 5008	1400	DHL_Y_DO.EXE.exe	92
PID 1400 wrote to memory of 5008	1400	DHL_Y_DO.EXE.exe	92
PID 1400 wrote to memory of 5008	1400	DHL_Y_DO.EXE.exe	92
PID 1400 wrote to memory of 5008	1400	DHL_Y_DO.EXE.exe	92
PID 5008 wrote to memory of 5004	5008	DHL_Y_DO.EXE.exe	93
PID 5008 wrote to memory of 5004	5008	DHL_Y_DO.EXE.exe	93
PID 5008 wrote to memory of 5004	5008	DHL_Y_DO.EXE.exe	93
PID 5008 wrote to memory of 5004	5008	DHL_Y_DO.EXE.exe	93
PID 5008 wrote to memory of 5004	5008	DHL_Y_DO.EXE.exe	93

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\DHL_Y_DO.EXE.exe
"C:\Users\Admin\AppData\Local\Temp\DHL_Y_DO.EXE.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1400
- C:\Users\Admin\AppData\Local\Temp\DHL_Y_DO.EXE.exe
  "C:\Users\Admin\AppData\Local\Temp\DHL_Y_DO.EXE.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:5008
- - 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:5004

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/1400-132-0x00000000000F0000-0x00000000001FE000-memory.dmp

Filesize
1.1MB

Download
memory/1400-133-0x0000000005220000-0x00000000057C4000-memory.dmp

Filesize
5.6MB

Download
memory/1400-134-0x0000000004C70000-0x0000000004D02000-memory.dmp

Filesize
584KB

Download
memory/1400-135-0x0000000004B90000-0x0000000004B9A000-memory.dmp

Filesize
40KB

Download
memory/1400-136-0x0000000009920000-0x00000000099BC000-memory.dmp

Filesize
624KB

Download
memory/1400-137-0x0000000009AC0000-0x0000000009B26000-memory.dmp

Filesize
408KB

Download
memory/5004-146-0x0000000000F40000-0x0000000000FA6000-memory.dmp

Filesize
408KB

Download
memory/5008-139-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/5008-141-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/5008-144-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download