blustealer | ecb3d88e4ad2cbd22a6d888de32ef236e217b25101123a4767b11656e23ed1ba

General

Target

1fc2c7b3f3a14a3000e0987519317194f397340352ce23b12e7ae1bcfbb75c51.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

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-1-5-21-4238149048-355649189-894321705-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-4238149048-355649189-894321705-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-4238149048-355649189-894321705-1000\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 3408 set thread context of 1484	3408	1fc2c7b3f3a14a3000e0987519317194f397340352ce23b12e7ae1bcfbb75c51.exe	92
PID 1484 set thread context of 4156	1484	1fc2c7b3f3a14a3000e0987519317194f397340352ce23b12e7ae1bcfbb75c51.exe	93

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

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1484	1fc2c7b3f3a14a3000e0987519317194f397340352ce23b12e7ae1bcfbb75c51.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 3408 wrote to memory of 1484	3408	1fc2c7b3f3a14a3000e0987519317194f397340352ce23b12e7ae1bcfbb75c51.exe	92
PID 3408 wrote to memory of 1484	3408	1fc2c7b3f3a14a3000e0987519317194f397340352ce23b12e7ae1bcfbb75c51.exe	92
PID 3408 wrote to memory of 1484	3408	1fc2c7b3f3a14a3000e0987519317194f397340352ce23b12e7ae1bcfbb75c51.exe	92
PID 3408 wrote to memory of 1484	3408	1fc2c7b3f3a14a3000e0987519317194f397340352ce23b12e7ae1bcfbb75c51.exe	92
PID 3408 wrote to memory of 1484	3408	1fc2c7b3f3a14a3000e0987519317194f397340352ce23b12e7ae1bcfbb75c51.exe	92
PID 3408 wrote to memory of 1484	3408	1fc2c7b3f3a14a3000e0987519317194f397340352ce23b12e7ae1bcfbb75c51.exe	92
PID 3408 wrote to memory of 1484	3408	1fc2c7b3f3a14a3000e0987519317194f397340352ce23b12e7ae1bcfbb75c51.exe	92
PID 3408 wrote to memory of 1484	3408	1fc2c7b3f3a14a3000e0987519317194f397340352ce23b12e7ae1bcfbb75c51.exe	92
PID 1484 wrote to memory of 4156	1484	1fc2c7b3f3a14a3000e0987519317194f397340352ce23b12e7ae1bcfbb75c51.exe	93
PID 1484 wrote to memory of 4156	1484	1fc2c7b3f3a14a3000e0987519317194f397340352ce23b12e7ae1bcfbb75c51.exe	93
PID 1484 wrote to memory of 4156	1484	1fc2c7b3f3a14a3000e0987519317194f397340352ce23b12e7ae1bcfbb75c51.exe	93
PID 1484 wrote to memory of 4156	1484	1fc2c7b3f3a14a3000e0987519317194f397340352ce23b12e7ae1bcfbb75c51.exe	93
PID 1484 wrote to memory of 4156	1484	1fc2c7b3f3a14a3000e0987519317194f397340352ce23b12e7ae1bcfbb75c51.exe	93

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4238149048-355649189-894321705-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4238149048-355649189-894321705-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\1fc2c7b3f3a14a3000e0987519317194f397340352ce23b12e7ae1bcfbb75c51.exe
"C:\Users\Admin\AppData\Local\Temp\1fc2c7b3f3a14a3000e0987519317194f397340352ce23b12e7ae1bcfbb75c51.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3408
- C:\Users\Admin\AppData\Local\Temp\1fc2c7b3f3a14a3000e0987519317194f397340352ce23b12e7ae1bcfbb75c51.exe
  "C:\Users\Admin\AppData\Local\Temp\1fc2c7b3f3a14a3000e0987519317194f397340352ce23b12e7ae1bcfbb75c51.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1484
- - 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:4156

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/1484-140-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1484-150-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1484-146-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1484-143-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/3408-136-0x0000000005BF0000-0x0000000005C00000-memory.dmp

Filesize
64KB

Download
memory/3408-138-0x0000000005BF0000-0x0000000005C00000-memory.dmp

Filesize
64KB

Download
memory/3408-139-0x0000000007540000-0x00000000075DC000-memory.dmp

Filesize
624KB

Download
memory/3408-137-0x0000000005970000-0x000000000597A000-memory.dmp

Filesize
40KB

Download
memory/3408-133-0x0000000000ED0000-0x0000000000FAC000-memory.dmp

Filesize
880KB

Download
memory/3408-135-0x0000000005980000-0x0000000005A12000-memory.dmp

Filesize
584KB

Download
memory/3408-134-0x0000000005E90000-0x0000000006434000-memory.dmp

Filesize
5.6MB

Download
memory/4156-147-0x0000000000F70000-0x0000000000FD6000-memory.dmp

Filesize
408KB

Download
memory/4156-148-0x00000000058D0000-0x00000000058E0000-memory.dmp

Filesize
64KB

Download

Analysis

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