blustealer | 13537e7d58eb6312b80c2abd796be6569ec2d99a41c20913629db6c1d5c12e0b

General

Target

13537e7d58eb6312b80c2abd796be6569ec2d99a41c20913629db6c1d5c12e0b.exe
Size

1.2MB
MD5

9b9068806d229820ef4977c37b9ece31
SHA1

d482d3e05dadf33a8cfc41ed3d33b700c9c5afe3
SHA256

13537e7d58eb6312b80c2abd796be6569ec2d99a41c20913629db6c1d5c12e0b
SHA512

c94c874d9f7cae44be88e3b4ea2121cd8475d039f886b93b963c231d14b2012b52943b3f4aa229773ff8b747111ad0943f3846bfe05b47a2d551bc3cfc12490e
SSDEEP

24576:h11jcQRG1e/zhH2b7Kc41/r8bAVx8+c8j7P36vg7dR:h1OQSgzhRc41/gqBc8j7eg7d

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-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\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 1448 set thread context of 2648	1448	13537e7d58eb6312b80c2abd796be6569ec2d99a41c20913629db6c1d5c12e0b.exe	93
PID 2648 set thread context of 360	2648	13537e7d58eb6312b80c2abd796be6569ec2d99a41c20913629db6c1d5c12e0b.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	42	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1448	13537e7d58eb6312b80c2abd796be6569ec2d99a41c20913629db6c1d5c12e0b.exe
1448	13537e7d58eb6312b80c2abd796be6569ec2d99a41c20913629db6c1d5c12e0b.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1448	13537e7d58eb6312b80c2abd796be6569ec2d99a41c20913629db6c1d5c12e0b.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2648	13537e7d58eb6312b80c2abd796be6569ec2d99a41c20913629db6c1d5c12e0b.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 1448 wrote to memory of 4456	1448	13537e7d58eb6312b80c2abd796be6569ec2d99a41c20913629db6c1d5c12e0b.exe	92
PID 1448 wrote to memory of 4456	1448	13537e7d58eb6312b80c2abd796be6569ec2d99a41c20913629db6c1d5c12e0b.exe	92
PID 1448 wrote to memory of 4456	1448	13537e7d58eb6312b80c2abd796be6569ec2d99a41c20913629db6c1d5c12e0b.exe	92
PID 1448 wrote to memory of 2648	1448	13537e7d58eb6312b80c2abd796be6569ec2d99a41c20913629db6c1d5c12e0b.exe	93
PID 1448 wrote to memory of 2648	1448	13537e7d58eb6312b80c2abd796be6569ec2d99a41c20913629db6c1d5c12e0b.exe	93
PID 1448 wrote to memory of 2648	1448	13537e7d58eb6312b80c2abd796be6569ec2d99a41c20913629db6c1d5c12e0b.exe	93
PID 1448 wrote to memory of 2648	1448	13537e7d58eb6312b80c2abd796be6569ec2d99a41c20913629db6c1d5c12e0b.exe	93
PID 1448 wrote to memory of 2648	1448	13537e7d58eb6312b80c2abd796be6569ec2d99a41c20913629db6c1d5c12e0b.exe	93
PID 1448 wrote to memory of 2648	1448	13537e7d58eb6312b80c2abd796be6569ec2d99a41c20913629db6c1d5c12e0b.exe	93
PID 1448 wrote to memory of 2648	1448	13537e7d58eb6312b80c2abd796be6569ec2d99a41c20913629db6c1d5c12e0b.exe	93
PID 1448 wrote to memory of 2648	1448	13537e7d58eb6312b80c2abd796be6569ec2d99a41c20913629db6c1d5c12e0b.exe	93
PID 2648 wrote to memory of 360	2648	13537e7d58eb6312b80c2abd796be6569ec2d99a41c20913629db6c1d5c12e0b.exe	94
PID 2648 wrote to memory of 360	2648	13537e7d58eb6312b80c2abd796be6569ec2d99a41c20913629db6c1d5c12e0b.exe	94
PID 2648 wrote to memory of 360	2648	13537e7d58eb6312b80c2abd796be6569ec2d99a41c20913629db6c1d5c12e0b.exe	94
PID 2648 wrote to memory of 360	2648	13537e7d58eb6312b80c2abd796be6569ec2d99a41c20913629db6c1d5c12e0b.exe	94
PID 2648 wrote to memory of 360	2648	13537e7d58eb6312b80c2abd796be6569ec2d99a41c20913629db6c1d5c12e0b.exe	94

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\13537e7d58eb6312b80c2abd796be6569ec2d99a41c20913629db6c1d5c12e0b.exe
"C:\Users\Admin\AppData\Local\Temp\13537e7d58eb6312b80c2abd796be6569ec2d99a41c20913629db6c1d5c12e0b.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1448
- C:\Users\Admin\AppData\Local\Temp\13537e7d58eb6312b80c2abd796be6569ec2d99a41c20913629db6c1d5c12e0b.exe
  "C:\Users\Admin\AppData\Local\Temp\13537e7d58eb6312b80c2abd796be6569ec2d99a41c20913629db6c1d5c12e0b.exe"
  2⤵
  PID:4456
- C:\Users\Admin\AppData\Local\Temp\13537e7d58eb6312b80c2abd796be6569ec2d99a41c20913629db6c1d5c12e0b.exe
  "C:\Users\Admin\AppData\Local\Temp\13537e7d58eb6312b80c2abd796be6569ec2d99a41c20913629db6c1d5c12e0b.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2648
- - 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:360

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/360-147-0x0000000001300000-0x0000000001366000-memory.dmp

Filesize
408KB

Download
memory/1448-132-0x00000000006C0000-0x0000000000800000-memory.dmp

Filesize
1.2MB

Download
memory/1448-133-0x00000000056E0000-0x0000000005C84000-memory.dmp

Filesize
5.6MB

Download
memory/1448-134-0x0000000005040000-0x00000000050D2000-memory.dmp

Filesize
584KB

Download
memory/1448-135-0x00000000050F0000-0x00000000050FA000-memory.dmp

Filesize
40KB

Download
memory/1448-136-0x0000000009EC0000-0x0000000009F5C000-memory.dmp

Filesize
624KB

Download
memory/1448-137-0x0000000009F60000-0x0000000009FC6000-memory.dmp

Filesize
408KB

Download
memory/2648-142-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2648-140-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2648-145-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2648-148-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download

Analysis

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