blustealer | 579c3138028884421849a6d210996f27da317f22d228a98d9bd0704786090498

General

Target

579c3138028884421849a6d210996f27da317f22d228a98d9bd0704786090498.exe
Size

1.1MB
MD5

2d475dbdfd7a378689d984a04677e641
SHA1

1a673fb62bb6e29fb3d9ef0d40e480cbad541879
SHA256

579c3138028884421849a6d210996f27da317f22d228a98d9bd0704786090498
SHA512

cf9e9014fc5b462ef5d2326c452d922b3c3b3f1317eed74b4620345fe8eeef15779abdf239d87a8c5dcb2e124c3d4214a0be8a06d43be3108e348091a7706fc5

Score

10^/10

blustealer collection stealer

Malware Config

Extracted

Family

blustealer

C2

https://api.telegram.org/bot5330579892:AAHDIOXrD-d-pMU_JI4pPczBI962-9fokRs/sendMessage?chat_id=1494890429

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-1-5-21-1101907861-274115917-2188613224-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-1101907861-274115917-2188613224-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-1101907861-274115917-2188613224-1000\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 3076 set thread context of 3588	3076	579c3138028884421849a6d210996f27da317f22d228a98d9bd0704786090498.exe	95
PID 3588 set thread context of 3496	3588	579c3138028884421849a6d210996f27da317f22d228a98d9bd0704786090498.exe	96

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
3588	579c3138028884421849a6d210996f27da317f22d228a98d9bd0704786090498.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 3076 wrote to memory of 3588	3076	579c3138028884421849a6d210996f27da317f22d228a98d9bd0704786090498.exe	95
PID 3076 wrote to memory of 3588	3076	579c3138028884421849a6d210996f27da317f22d228a98d9bd0704786090498.exe	95
PID 3076 wrote to memory of 3588	3076	579c3138028884421849a6d210996f27da317f22d228a98d9bd0704786090498.exe	95
PID 3076 wrote to memory of 3588	3076	579c3138028884421849a6d210996f27da317f22d228a98d9bd0704786090498.exe	95
PID 3076 wrote to memory of 3588	3076	579c3138028884421849a6d210996f27da317f22d228a98d9bd0704786090498.exe	95
PID 3076 wrote to memory of 3588	3076	579c3138028884421849a6d210996f27da317f22d228a98d9bd0704786090498.exe	95
PID 3076 wrote to memory of 3588	3076	579c3138028884421849a6d210996f27da317f22d228a98d9bd0704786090498.exe	95
PID 3076 wrote to memory of 3588	3076	579c3138028884421849a6d210996f27da317f22d228a98d9bd0704786090498.exe	95
PID 3588 wrote to memory of 3496	3588	579c3138028884421849a6d210996f27da317f22d228a98d9bd0704786090498.exe	96
PID 3588 wrote to memory of 3496	3588	579c3138028884421849a6d210996f27da317f22d228a98d9bd0704786090498.exe	96
PID 3588 wrote to memory of 3496	3588	579c3138028884421849a6d210996f27da317f22d228a98d9bd0704786090498.exe	96
PID 3588 wrote to memory of 3496	3588	579c3138028884421849a6d210996f27da317f22d228a98d9bd0704786090498.exe	96
PID 3588 wrote to memory of 3496	3588	579c3138028884421849a6d210996f27da317f22d228a98d9bd0704786090498.exe	96

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1101907861-274115917-2188613224-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1101907861-274115917-2188613224-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\579c3138028884421849a6d210996f27da317f22d228a98d9bd0704786090498.exe
"C:\Users\Admin\AppData\Local\Temp\579c3138028884421849a6d210996f27da317f22d228a98d9bd0704786090498.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3076
- C:\Users\Admin\AppData\Local\Temp\579c3138028884421849a6d210996f27da317f22d228a98d9bd0704786090498.exe
  "C:\Users\Admin\AppData\Local\Temp\579c3138028884421849a6d210996f27da317f22d228a98d9bd0704786090498.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3588
- - 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:3496

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/3076-131-0x0000000005E70000-0x0000000006414000-memory.dmp

Filesize
5.6MB

Download
memory/3076-132-0x00000000059C0000-0x0000000005A52000-memory.dmp

Filesize
584KB

Download
memory/3076-133-0x0000000005AC0000-0x0000000005ACA000-memory.dmp

Filesize
40KB

Download
memory/3076-134-0x000000000A480000-0x000000000A51C000-memory.dmp

Filesize
624KB

Download
memory/3076-135-0x000000000A3E0000-0x000000000A446000-memory.dmp

Filesize
408KB

Download
memory/3076-130-0x0000000000AC0000-0x0000000000BD8000-memory.dmp

Filesize
1.1MB

Download
memory/3496-144-0x0000000000960000-0x00000000009C6000-memory.dmp

Filesize
408KB

Download
memory/3588-142-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/3588-139-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/3588-137-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/3588-145-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download

Analysis

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