blustealer | f8de1a039dd5cd1daf706bfb62b5b5e4c132dc5669127f7e9a5e437d40b84029

General

Target

f8de1a039dd5cd1daf706bfb62b5b5e4c132dc5669127f7e9a5e437d40b84029.exe
Size

1.2MB
MD5

9be98fb47edee3acab8a1471b98f374b
SHA1

7eb34021fdd67e32aca3a7098ed37c310eecab44
SHA256

f8de1a039dd5cd1daf706bfb62b5b5e4c132dc5669127f7e9a5e437d40b84029
SHA512

9d151921898104a7e5923ba65033d2e1f8a682b9a787818126b17c7ae06e8fdaa6c63c3d4c84a1a407e55fac76e458487093fe32cd8e27455e742b77af082077
SSDEEP

12288:WraodRoXbwufcugFmDbQNXcsc42enVkcqIYnMJ7mDgQsuThiTt4kGEPak:bX8siiscscH2vb8kmDgQ/62s

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-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4184 set thread context of 3876	4184	f8de1a039dd5cd1daf706bfb62b5b5e4c132dc5669127f7e9a5e437d40b84029.exe	93
PID 3876 set thread context of 3264	3876	f8de1a039dd5cd1daf706bfb62b5b5e4c132dc5669127f7e9a5e437d40b84029.exe	94

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

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3876	f8de1a039dd5cd1daf706bfb62b5b5e4c132dc5669127f7e9a5e437d40b84029.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 4184 wrote to memory of 3876	4184	f8de1a039dd5cd1daf706bfb62b5b5e4c132dc5669127f7e9a5e437d40b84029.exe	93
PID 4184 wrote to memory of 3876	4184	f8de1a039dd5cd1daf706bfb62b5b5e4c132dc5669127f7e9a5e437d40b84029.exe	93
PID 4184 wrote to memory of 3876	4184	f8de1a039dd5cd1daf706bfb62b5b5e4c132dc5669127f7e9a5e437d40b84029.exe	93
PID 4184 wrote to memory of 3876	4184	f8de1a039dd5cd1daf706bfb62b5b5e4c132dc5669127f7e9a5e437d40b84029.exe	93
PID 4184 wrote to memory of 3876	4184	f8de1a039dd5cd1daf706bfb62b5b5e4c132dc5669127f7e9a5e437d40b84029.exe	93
PID 4184 wrote to memory of 3876	4184	f8de1a039dd5cd1daf706bfb62b5b5e4c132dc5669127f7e9a5e437d40b84029.exe	93
PID 4184 wrote to memory of 3876	4184	f8de1a039dd5cd1daf706bfb62b5b5e4c132dc5669127f7e9a5e437d40b84029.exe	93
PID 4184 wrote to memory of 3876	4184	f8de1a039dd5cd1daf706bfb62b5b5e4c132dc5669127f7e9a5e437d40b84029.exe	93
PID 3876 wrote to memory of 3264	3876	f8de1a039dd5cd1daf706bfb62b5b5e4c132dc5669127f7e9a5e437d40b84029.exe	94
PID 3876 wrote to memory of 3264	3876	f8de1a039dd5cd1daf706bfb62b5b5e4c132dc5669127f7e9a5e437d40b84029.exe	94
PID 3876 wrote to memory of 3264	3876	f8de1a039dd5cd1daf706bfb62b5b5e4c132dc5669127f7e9a5e437d40b84029.exe	94
PID 3876 wrote to memory of 3264	3876	f8de1a039dd5cd1daf706bfb62b5b5e4c132dc5669127f7e9a5e437d40b84029.exe	94
PID 3876 wrote to memory of 3264	3876	f8de1a039dd5cd1daf706bfb62b5b5e4c132dc5669127f7e9a5e437d40b84029.exe	94

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\f8de1a039dd5cd1daf706bfb62b5b5e4c132dc5669127f7e9a5e437d40b84029.exe
"C:\Users\Admin\AppData\Local\Temp\f8de1a039dd5cd1daf706bfb62b5b5e4c132dc5669127f7e9a5e437d40b84029.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4184
- C:\Users\Admin\AppData\Local\Temp\f8de1a039dd5cd1daf706bfb62b5b5e4c132dc5669127f7e9a5e437d40b84029.exe
  "C:\Users\Admin\AppData\Local\Temp\f8de1a039dd5cd1daf706bfb62b5b5e4c132dc5669127f7e9a5e437d40b84029.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3876
- - 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:3264

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/3264-146-0x0000000000F70000-0x0000000000FD6000-memory.dmp

Filesize
408KB

Download
memory/3876-144-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/3876-139-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/3876-141-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/3876-147-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/4184-135-0x00000000052A0000-0x00000000052AA000-memory.dmp

Filesize
40KB

Download
memory/4184-136-0x0000000008BB0000-0x0000000008C4C000-memory.dmp

Filesize
624KB

Download
memory/4184-137-0x0000000008C50000-0x0000000008CB6000-memory.dmp

Filesize
408KB

Download
memory/4184-132-0x0000000000630000-0x000000000075E000-memory.dmp

Filesize
1.2MB

Download
memory/4184-134-0x0000000005100000-0x0000000005192000-memory.dmp

Filesize
584KB

Download
memory/4184-133-0x0000000005610000-0x0000000005BB4000-memory.dmp

Filesize
5.6MB

Download

Analysis

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