blustealer | 2408a41dc207fa367704b1f16372fedfa2c4163f65daf436d6f8ae2490b9aff6

Resubmissions

17-04-2023 16:19

230417-tsqjrsfb33 10

17-04-2023 16:08

230417-tk6wsagg5s 10

17-04-2023 15:53

230417-tbt6magg2s 10

17-04-2023 15:30

230417-sxwqxage9v 10

Analysis

max time kernel
145s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
17-04-2023 15:53

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

RFQ for supply of Stock Replenishment FI-2023-089.exe
Size

833KB
MD5

c3d43cf53c510fed679a621e5c9d0aea
SHA1

a8d367631072c110d99369209782f8ddd6de673f
SHA256

2a4fe1060c15849fad34754e02f548fc250f8749ab923f929c7497c0614c760b
SHA512

19d006881997d35cc57fff45b1e216d601d83b15045dcc75f8b6b617bb797c838a7cf0c3e0eec1e016817d5f3f429650a88a914bfaa9b9deeb62af18255437a8
SSDEEP

12288:El4SNuCXLzEfF0S2FXtBvFD3oNQLp1K6YZQ0MASVbNqRPXnBGTJ:EG9CvEfFv23o2LDK6WQOSVpwXnB2

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-1-5-21-1529757233-3489015626-3409890339-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\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 1512 set thread context of 948	1512	RFQ for supply of Stock Replenishment FI-2023-089.exe	90
PID 948 set thread context of 1244	948	RFQ for supply of Stock Replenishment FI-2023-089.exe	91

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

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
948	RFQ for supply of Stock Replenishment FI-2023-089.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 1512 wrote to memory of 948	1512	RFQ for supply of Stock Replenishment FI-2023-089.exe	90
PID 1512 wrote to memory of 948	1512	RFQ for supply of Stock Replenishment FI-2023-089.exe	90
PID 1512 wrote to memory of 948	1512	RFQ for supply of Stock Replenishment FI-2023-089.exe	90
PID 1512 wrote to memory of 948	1512	RFQ for supply of Stock Replenishment FI-2023-089.exe	90
PID 1512 wrote to memory of 948	1512	RFQ for supply of Stock Replenishment FI-2023-089.exe	90
PID 1512 wrote to memory of 948	1512	RFQ for supply of Stock Replenishment FI-2023-089.exe	90
PID 1512 wrote to memory of 948	1512	RFQ for supply of Stock Replenishment FI-2023-089.exe	90
PID 1512 wrote to memory of 948	1512	RFQ for supply of Stock Replenishment FI-2023-089.exe	90
PID 948 wrote to memory of 1244	948	RFQ for supply of Stock Replenishment FI-2023-089.exe	91
PID 948 wrote to memory of 1244	948	RFQ for supply of Stock Replenishment FI-2023-089.exe	91
PID 948 wrote to memory of 1244	948	RFQ for supply of Stock Replenishment FI-2023-089.exe	91
PID 948 wrote to memory of 1244	948	RFQ for supply of Stock Replenishment FI-2023-089.exe	91
PID 948 wrote to memory of 1244	948	RFQ for supply of Stock Replenishment FI-2023-089.exe	91

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\RFQ for supply of Stock Replenishment FI-2023-089.exe
"C:\Users\Admin\AppData\Local\Temp\RFQ for supply of Stock Replenishment FI-2023-089.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1512
- C:\Users\Admin\AppData\Local\Temp\RFQ for supply of Stock Replenishment FI-2023-089.exe
  "C:\Users\Admin\AppData\Local\Temp\RFQ for supply of Stock Replenishment FI-2023-089.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:948
- - 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:1244

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/948-140-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/948-159-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/948-146-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/948-143-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1244-148-0x0000000005400000-0x0000000005410000-memory.dmp

Filesize
64KB

Download
memory/1244-147-0x0000000000E00000-0x0000000000E66000-memory.dmp

Filesize
408KB

Download
memory/1512-136-0x0000000005990000-0x000000000599A000-memory.dmp

Filesize
40KB

Download
memory/1512-139-0x0000000007480000-0x000000000751C000-memory.dmp

Filesize
624KB

Download
memory/1512-138-0x00000000059E0000-0x00000000059F0000-memory.dmp

Filesize
64KB

Download
memory/1512-137-0x00000000059E0000-0x00000000059F0000-memory.dmp

Filesize
64KB

Download
memory/1512-133-0x0000000000E50000-0x0000000000F26000-memory.dmp

Filesize
856KB

Download
memory/1512-135-0x00000000058F0000-0x0000000005982000-memory.dmp

Filesize
584KB

Download
memory/1512-134-0x0000000005DC0000-0x0000000006364000-memory.dmp

Filesize
5.6MB

Download