blustealer | 1fc2c7b3f3a14a3000e0987519317194f397340352ce23b12e7ae1bcfbb75c51

Analysis

max time kernel
151s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
05-05-2023 20:59

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General

Target

technicaldatasheet.exe
Size

852KB
MD5

d42cd95f4bc95f02825a48054c2bc1d2
SHA1

edf9a330fe6a0ab953097a573e171ea9a40fe40d
SHA256

1fc2c7b3f3a14a3000e0987519317194f397340352ce23b12e7ae1bcfbb75c51
SHA512

ead96568d9707a246ae310737daa2fd7edf4f4c991d339eb8e20ecba7d32705b4ea6893c26f53d9c1520d1391b63e5b0faedaf69385473314afd21297c156cfd
SSDEEP

12288:eH4XxAtOc6iyk7k27IB9mxzMefPXgq1fQu+78rjuLdvWhgzigSLwkVy5A5I4h:j6Uc6i9IKcpeXRdQD0j65egSLlyO5IK

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-1-5-21-144354903-2550862337-1367551827-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\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 2108 set thread context of 4472	2108	technicaldatasheet.exe	91
PID 4472 set thread context of 1188	4472	technicaldatasheet.exe	92

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

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

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4472	technicaldatasheet.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 2108 wrote to memory of 4472	2108	technicaldatasheet.exe	91
PID 2108 wrote to memory of 4472	2108	technicaldatasheet.exe	91
PID 2108 wrote to memory of 4472	2108	technicaldatasheet.exe	91
PID 2108 wrote to memory of 4472	2108	technicaldatasheet.exe	91
PID 2108 wrote to memory of 4472	2108	technicaldatasheet.exe	91
PID 2108 wrote to memory of 4472	2108	technicaldatasheet.exe	91
PID 2108 wrote to memory of 4472	2108	technicaldatasheet.exe	91
PID 2108 wrote to memory of 4472	2108	technicaldatasheet.exe	91
PID 4472 wrote to memory of 1188	4472	technicaldatasheet.exe	92
PID 4472 wrote to memory of 1188	4472	technicaldatasheet.exe	92
PID 4472 wrote to memory of 1188	4472	technicaldatasheet.exe	92
PID 4472 wrote to memory of 1188	4472	technicaldatasheet.exe	92
PID 4472 wrote to memory of 1188	4472	technicaldatasheet.exe	92

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\technicaldatasheet.exe
"C:\Users\Admin\AppData\Local\Temp\technicaldatasheet.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2108
- C:\Users\Admin\AppData\Local\Temp\technicaldatasheet.exe
  "C:\Users\Admin\AppData\Local\Temp\technicaldatasheet.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4472
- - 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:1188

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

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Downloads

memory/1188-148-0x0000000001000000-0x0000000001066000-memory.dmp

Filesize
408KB

Download
memory/1188-149-0x0000000005440000-0x0000000005450000-memory.dmp

Filesize
64KB

Download
memory/2108-139-0x0000000006D50000-0x0000000006DEC000-memory.dmp

Filesize
624KB

Download
memory/2108-136-0x0000000005010000-0x0000000005020000-memory.dmp

Filesize
64KB

Download
memory/2108-137-0x0000000004F60000-0x0000000004F6A000-memory.dmp

Filesize
40KB

Download
memory/2108-138-0x0000000005010000-0x0000000005020000-memory.dmp

Filesize
64KB

Download
memory/2108-133-0x0000000000440000-0x000000000051C000-memory.dmp

Filesize
880KB

Download
memory/2108-135-0x0000000004EC0000-0x0000000004F52000-memory.dmp

Filesize
584KB

Download
memory/2108-134-0x0000000005390000-0x0000000005934000-memory.dmp

Filesize
5.6MB

Download
memory/4472-140-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/4472-143-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/4472-146-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/4472-147-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download