blustealer | 16d842e8d7472cf98eee098f6a0f9b3ad5f3668928c86a898da187dc9106b6e3

Analysis

max time kernel
150s
max time network
134s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
30-11-2022 10:05

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General

Target

Order Request.exe
Size

1.0MB
MD5

0751cb9453ccc6d6576c8e6583e8e8df
SHA1

c78f7efa2c57394097eca6c222f52dc6c5169515
SHA256

6f6927018a479ebbb860f5010a88d14ddaa2c64756e06ba9f0326ca15462b4e4
SHA512

ca93c74695ffc078236a868dfa8fdbaeec4af0cf3075377390aa6533c0fc4944aa0ac62fbe20cc7e2eaba1581cfbc48adcdac554ccefb4ce700dd4f803f7a35a
SSDEEP

24576:vZqB/XCxqrTElFByv3DCYlWSGHsGoR4Dq:GX5nE+3DCYlWSGMJ4+

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-1-5-21-929662420-1054238289-2961194603-1000\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 4960 set thread context of 4460	4960	Order Request.exe	90
PID 4460 set thread context of 4916	4460	Order Request.exe	91

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

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4460	Order Request.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 4960 wrote to memory of 4460	4960	Order Request.exe	90
PID 4960 wrote to memory of 4460	4960	Order Request.exe	90
PID 4960 wrote to memory of 4460	4960	Order Request.exe	90
PID 4960 wrote to memory of 4460	4960	Order Request.exe	90
PID 4960 wrote to memory of 4460	4960	Order Request.exe	90
PID 4960 wrote to memory of 4460	4960	Order Request.exe	90
PID 4960 wrote to memory of 4460	4960	Order Request.exe	90
PID 4960 wrote to memory of 4460	4960	Order Request.exe	90
PID 4460 wrote to memory of 4916	4460	Order Request.exe	91
PID 4460 wrote to memory of 4916	4460	Order Request.exe	91
PID 4460 wrote to memory of 4916	4460	Order Request.exe	91
PID 4460 wrote to memory of 4916	4460	Order Request.exe	91
PID 4460 wrote to memory of 4916	4460	Order Request.exe	91

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\Order Request.exe
"C:\Users\Admin\AppData\Local\Temp\Order Request.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4960
- C:\Users\Admin\AppData\Local\Temp\Order Request.exe
  "C:\Users\Admin\AppData\Local\Temp\Order Request.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4460
- - 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:4916

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/4460-141-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/4460-143-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/4460-146-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/4916-148-0x00000000005E0000-0x0000000000646000-memory.dmp

Filesize
408KB

Download
memory/4960-135-0x0000000000410000-0x000000000051C000-memory.dmp

Filesize
1.0MB

Download
memory/4960-136-0x0000000005500000-0x0000000005AA4000-memory.dmp

Filesize
5.6MB

Download
memory/4960-137-0x0000000004F50000-0x0000000004FE2000-memory.dmp

Filesize
584KB

Download
memory/4960-138-0x0000000004EA0000-0x0000000004EAA000-memory.dmp

Filesize
40KB

Download
memory/4960-139-0x0000000008D60000-0x0000000008DFC000-memory.dmp

Filesize
624KB

Download