blustealer | da7f7bddce0402e2c6e547009034a7745842bdeeedfc9fc36a2761270ea350cb

General

Target

SecuriteInfo.com.Trojan.Siggen19.16538.28645.2062.exe
Size

1.2MB
MD5

f316c250f78bc5c1ac83ec3993c9edec
SHA1

9807d7dd5f9446b6b9990d0bf3b57c669de8e172
SHA256

da7f7bddce0402e2c6e547009034a7745842bdeeedfc9fc36a2761270ea350cb
SHA512

0ceff2a91e474257f1ca40d223cdcce9181f417d16c79c52e252ff488761377a2ac451fc9d11dc084706b68a19c71565e867754fcf305ddf96b34eec05a9d6fd
SSDEEP

24576:VnghTrx6br3u40UMffEOU4PPaUVVrXpqTiwAAgEEY4:Vghnx6br3u40jEOUcPRVPqTQp

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-1-5-21-929662420-1054238289-2961194603-1000\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 5028 set thread context of 1012	5028	SecuriteInfo.com.Trojan.Siggen19.16538.28645.2062.exe	84
PID 1012 set thread context of 1156	1012	SecuriteInfo.com.Trojan.Siggen19.16538.28645.2062.exe	85

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

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1012	SecuriteInfo.com.Trojan.Siggen19.16538.28645.2062.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 5028 wrote to memory of 1012	5028	SecuriteInfo.com.Trojan.Siggen19.16538.28645.2062.exe	84
PID 5028 wrote to memory of 1012	5028	SecuriteInfo.com.Trojan.Siggen19.16538.28645.2062.exe	84
PID 5028 wrote to memory of 1012	5028	SecuriteInfo.com.Trojan.Siggen19.16538.28645.2062.exe	84
PID 5028 wrote to memory of 1012	5028	SecuriteInfo.com.Trojan.Siggen19.16538.28645.2062.exe	84
PID 5028 wrote to memory of 1012	5028	SecuriteInfo.com.Trojan.Siggen19.16538.28645.2062.exe	84
PID 5028 wrote to memory of 1012	5028	SecuriteInfo.com.Trojan.Siggen19.16538.28645.2062.exe	84
PID 5028 wrote to memory of 1012	5028	SecuriteInfo.com.Trojan.Siggen19.16538.28645.2062.exe	84
PID 5028 wrote to memory of 1012	5028	SecuriteInfo.com.Trojan.Siggen19.16538.28645.2062.exe	84
PID 1012 wrote to memory of 1156	1012	SecuriteInfo.com.Trojan.Siggen19.16538.28645.2062.exe	85
PID 1012 wrote to memory of 1156	1012	SecuriteInfo.com.Trojan.Siggen19.16538.28645.2062.exe	85
PID 1012 wrote to memory of 1156	1012	SecuriteInfo.com.Trojan.Siggen19.16538.28645.2062.exe	85
PID 1012 wrote to memory of 1156	1012	SecuriteInfo.com.Trojan.Siggen19.16538.28645.2062.exe	85
PID 1012 wrote to memory of 1156	1012	SecuriteInfo.com.Trojan.Siggen19.16538.28645.2062.exe	85

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\SecuriteInfo.com.Trojan.Siggen19.16538.28645.2062.exe
"C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Trojan.Siggen19.16538.28645.2062.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:5028
- C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Trojan.Siggen19.16538.28645.2062.exe
  "C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Trojan.Siggen19.16538.28645.2062.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1012
- - 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:1156

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/1012-138-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1012-140-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1012-143-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1012-144-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1156-146-0x0000000000140000-0x00000000001A6000-memory.dmp

Filesize
408KB

Download
memory/5028-132-0x0000000000070000-0x00000000001A8000-memory.dmp

Filesize
1.2MB

Download
memory/5028-133-0x0000000005220000-0x00000000057C4000-memory.dmp

Filesize
5.6MB

Download
memory/5028-134-0x0000000004B30000-0x0000000004BC2000-memory.dmp

Filesize
584KB

Download
memory/5028-135-0x0000000004BE0000-0x0000000004BEA000-memory.dmp

Filesize
40KB

Download
memory/5028-136-0x0000000008A00000-0x0000000008A9C000-memory.dmp

Filesize
624KB

Download

Analysis

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