blustealer | b5145ccf5ded090001d3a5368ad32b5b4853f1b2153e55beae9ff0ba543e449e

General

Target

b5145ccf5ded090001d3a5368ad32b5b4853f1b2153e55beae9ff0ba543e449e.exe
Size

992KB
MD5

84bcb19b24fb3cf44188d8ea5e8a080f
SHA1

f6a1b91c039a3ce6cff9bf160725a4d2dae6df81
SHA256

b5145ccf5ded090001d3a5368ad32b5b4853f1b2153e55beae9ff0ba543e449e
SHA512

03658af693ef7d3754277e506e0aaf71402ab675ea4618adee8dcd34c50e1e49e5349dd6e92d6dd02f5abb72feb76d97aace506a6fc16f9ce01f1ad1f8902e32
SSDEEP

24576:8qPLaVUH999QYDtn9pvEni933gMciIX0GJ/llyoWD/H:fBH9QYDvpvwXMcpX0GJ/llQ

Score

10^/10

blustealer collection stealer

Malware Config

Extracted

Family

blustealer

C2

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 456 set thread context of 3476	456	b5145ccf5ded090001d3a5368ad32b5b4853f1b2153e55beae9ff0ba543e449e.exe	92
PID 3476 set thread context of 3288	3476	b5145ccf5ded090001d3a5368ad32b5b4853f1b2153e55beae9ff0ba543e449e.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	35	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
456	b5145ccf5ded090001d3a5368ad32b5b4853f1b2153e55beae9ff0ba543e449e.exe
456	b5145ccf5ded090001d3a5368ad32b5b4853f1b2153e55beae9ff0ba543e449e.exe
456	b5145ccf5ded090001d3a5368ad32b5b4853f1b2153e55beae9ff0ba543e449e.exe
456	b5145ccf5ded090001d3a5368ad32b5b4853f1b2153e55beae9ff0ba543e449e.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	456	b5145ccf5ded090001d3a5368ad32b5b4853f1b2153e55beae9ff0ba543e449e.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3476	b5145ccf5ded090001d3a5368ad32b5b4853f1b2153e55beae9ff0ba543e449e.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 456 wrote to memory of 4452	456	b5145ccf5ded090001d3a5368ad32b5b4853f1b2153e55beae9ff0ba543e449e.exe	91
PID 456 wrote to memory of 4452	456	b5145ccf5ded090001d3a5368ad32b5b4853f1b2153e55beae9ff0ba543e449e.exe	91
PID 456 wrote to memory of 4452	456	b5145ccf5ded090001d3a5368ad32b5b4853f1b2153e55beae9ff0ba543e449e.exe	91
PID 456 wrote to memory of 3476	456	b5145ccf5ded090001d3a5368ad32b5b4853f1b2153e55beae9ff0ba543e449e.exe	92
PID 456 wrote to memory of 3476	456	b5145ccf5ded090001d3a5368ad32b5b4853f1b2153e55beae9ff0ba543e449e.exe	92
PID 456 wrote to memory of 3476	456	b5145ccf5ded090001d3a5368ad32b5b4853f1b2153e55beae9ff0ba543e449e.exe	92
PID 456 wrote to memory of 3476	456	b5145ccf5ded090001d3a5368ad32b5b4853f1b2153e55beae9ff0ba543e449e.exe	92
PID 456 wrote to memory of 3476	456	b5145ccf5ded090001d3a5368ad32b5b4853f1b2153e55beae9ff0ba543e449e.exe	92
PID 456 wrote to memory of 3476	456	b5145ccf5ded090001d3a5368ad32b5b4853f1b2153e55beae9ff0ba543e449e.exe	92
PID 456 wrote to memory of 3476	456	b5145ccf5ded090001d3a5368ad32b5b4853f1b2153e55beae9ff0ba543e449e.exe	92
PID 456 wrote to memory of 3476	456	b5145ccf5ded090001d3a5368ad32b5b4853f1b2153e55beae9ff0ba543e449e.exe	92
PID 3476 wrote to memory of 3288	3476	b5145ccf5ded090001d3a5368ad32b5b4853f1b2153e55beae9ff0ba543e449e.exe	93
PID 3476 wrote to memory of 3288	3476	b5145ccf5ded090001d3a5368ad32b5b4853f1b2153e55beae9ff0ba543e449e.exe	93
PID 3476 wrote to memory of 3288	3476	b5145ccf5ded090001d3a5368ad32b5b4853f1b2153e55beae9ff0ba543e449e.exe	93
PID 3476 wrote to memory of 3288	3476	b5145ccf5ded090001d3a5368ad32b5b4853f1b2153e55beae9ff0ba543e449e.exe	93
PID 3476 wrote to memory of 3288	3476	b5145ccf5ded090001d3a5368ad32b5b4853f1b2153e55beae9ff0ba543e449e.exe	93

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\b5145ccf5ded090001d3a5368ad32b5b4853f1b2153e55beae9ff0ba543e449e.exe
"C:\Users\Admin\AppData\Local\Temp\b5145ccf5ded090001d3a5368ad32b5b4853f1b2153e55beae9ff0ba543e449e.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:456
- C:\Users\Admin\AppData\Local\Temp\b5145ccf5ded090001d3a5368ad32b5b4853f1b2153e55beae9ff0ba543e449e.exe
  "C:\Users\Admin\AppData\Local\Temp\b5145ccf5ded090001d3a5368ad32b5b4853f1b2153e55beae9ff0ba543e449e.exe"
  2⤵
  PID:4452
- C:\Users\Admin\AppData\Local\Temp\b5145ccf5ded090001d3a5368ad32b5b4853f1b2153e55beae9ff0ba543e449e.exe
  "C:\Users\Admin\AppData\Local\Temp\b5145ccf5ded090001d3a5368ad32b5b4853f1b2153e55beae9ff0ba543e449e.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3476
- - 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:3288

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/456-133-0x00000000002F0000-0x00000000003EA000-memory.dmp

Filesize
1000KB

Download
memory/456-134-0x0000000005460000-0x0000000005A04000-memory.dmp

Filesize
5.6MB

Download
memory/456-135-0x0000000004DE0000-0x0000000004E72000-memory.dmp

Filesize
584KB

Download
memory/456-136-0x0000000004D90000-0x0000000004D9A000-memory.dmp

Filesize
40KB

Download
memory/456-137-0x0000000005090000-0x00000000050A0000-memory.dmp

Filesize
64KB

Download
memory/456-138-0x0000000005090000-0x00000000050A0000-memory.dmp

Filesize
64KB

Download
memory/456-139-0x0000000006B20000-0x0000000006BBC000-memory.dmp

Filesize
624KB

Download
memory/3288-147-0x0000000000980000-0x00000000009E6000-memory.dmp

Filesize
408KB

Download
memory/3476-140-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/3476-143-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/3476-146-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/3476-152-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download

Analysis

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