blustealer | 4db869ae406def37b298c9cbf31e944865c6e0770432ba43ad72e8ade0c4b39a

Analysis

max time kernel
149s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
13/10/2022, 07:23

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target

RFQ 10102022.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

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-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\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 4924 set thread context of 1540	4924	RFQ 10102022.exe	91
PID 1540 set thread context of 692	1540	RFQ 10102022.exe	92

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
1540	RFQ 10102022.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 4924 wrote to memory of 1540	4924	RFQ 10102022.exe	91
PID 4924 wrote to memory of 1540	4924	RFQ 10102022.exe	91
PID 4924 wrote to memory of 1540	4924	RFQ 10102022.exe	91
PID 4924 wrote to memory of 1540	4924	RFQ 10102022.exe	91
PID 4924 wrote to memory of 1540	4924	RFQ 10102022.exe	91
PID 4924 wrote to memory of 1540	4924	RFQ 10102022.exe	91
PID 4924 wrote to memory of 1540	4924	RFQ 10102022.exe	91
PID 4924 wrote to memory of 1540	4924	RFQ 10102022.exe	91
PID 1540 wrote to memory of 692	1540	RFQ 10102022.exe	92
PID 1540 wrote to memory of 692	1540	RFQ 10102022.exe	92
PID 1540 wrote to memory of 692	1540	RFQ 10102022.exe	92
PID 1540 wrote to memory of 692	1540	RFQ 10102022.exe	92
PID 1540 wrote to memory of 692	1540	RFQ 10102022.exe	92

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\RFQ 10102022.exe
"C:\Users\Admin\AppData\Local\Temp\RFQ 10102022.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4924
- C:\Users\Admin\AppData\Local\Temp\RFQ 10102022.exe
  "C:\Users\Admin\AppData\Local\Temp\RFQ 10102022.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1540
- - 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:692

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

Replay Monitor

Loading Replay Monitor...

Downloads

memory/692-146-0x00000000000F0000-0x0000000000156000-memory.dmp

Filesize
408KB

Download
memory/1540-144-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1540-139-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1540-141-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1540-147-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/4924-135-0x0000000005590000-0x000000000559A000-memory.dmp

Filesize
40KB

Download
memory/4924-136-0x000000000A380000-0x000000000A41C000-memory.dmp

Filesize
624KB

Download
memory/4924-137-0x000000000A490000-0x000000000A4F6000-memory.dmp

Filesize
408KB

Download
memory/4924-132-0x0000000000AC0000-0x0000000000C00000-memory.dmp

Filesize
1.2MB

Download
memory/4924-134-0x0000000005610000-0x00000000056A2000-memory.dmp

Filesize
584KB

Download
memory/4924-133-0x0000000005BC0000-0x0000000006164000-memory.dmp

Filesize
5.6MB

Download