blustealer | af7b23bd61e2a87ccdbcfcb062e8da2723f1a72640623406a1dc81c6b2667f81

Resubmissions

15/09/2022, 17:59

220915-wkw3padgb3 3

15/09/2022, 17:56

220915-wh3gpadga8 3

22/07/2022, 19:25

220722-x4ylashdfl 10

22/07/2022, 17:20

220722-vwqvdaggfl 10

Analysis

max time kernel
1800s
max time network
1525s
platform
windows10-2004_x64
resource
win10v2004-20220721-en
resource tags

arch:x64arch:x86image:win10v2004-20220721-enlocale:en-usos:windows10-2004-x64system
submitted
22/07/2022, 19:25

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General

Target

ORDER3763873.exe
Size

13KB
MD5

fcf1a0e7b406505e0aaa094393d45d72
SHA1

cde2a1b3ef89f2b4c7a2048fa2d959e02c29008e
SHA256

352dd25fbf999c5e12526187390be9af7019db7c165f2e9e76fe7d1cd4bece3b
SHA512

5db78c6c157174cac8f010e8cf00d412a10703dd543ad224c7d81cb9b65b0a03891be95615dc57165761d433a673f316495e825e7a615d57b08b846fb3e52304

Score

10^/10

blustealer collection stealer

Malware Config

Extracted

Family

blustealer

https://api.telegram.org/bot5432809476:AAHtE5EDW3VQZZBLnEbEZpHEIJz5LbF0no/sendMessage?chat_id=5571556378

Signatures

BluStealer
A Modular information stealer written in Visual Basic.
stealer blustealer
Downloads MZ/PE file

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 2476 set thread context of 3612	2476	ORDER3763873.exe	78
PID 3612 set thread context of 4456	3612	ORDER3763873.exe	79

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

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2476	ORDER3763873.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3612	ORDER3763873.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 2476 wrote to memory of 3612	2476	ORDER3763873.exe	78
PID 2476 wrote to memory of 3612	2476	ORDER3763873.exe	78
PID 2476 wrote to memory of 3612	2476	ORDER3763873.exe	78
PID 2476 wrote to memory of 3612	2476	ORDER3763873.exe	78
PID 2476 wrote to memory of 3612	2476	ORDER3763873.exe	78
PID 2476 wrote to memory of 3612	2476	ORDER3763873.exe	78
PID 2476 wrote to memory of 3612	2476	ORDER3763873.exe	78
PID 2476 wrote to memory of 3612	2476	ORDER3763873.exe	78
PID 3612 wrote to memory of 4456	3612	ORDER3763873.exe	79
PID 3612 wrote to memory of 4456	3612	ORDER3763873.exe	79
PID 3612 wrote to memory of 4456	3612	ORDER3763873.exe	79
PID 3612 wrote to memory of 4456	3612	ORDER3763873.exe	79
PID 3612 wrote to memory of 4456	3612	ORDER3763873.exe	79

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\ORDER3763873.exe
"C:\Users\Admin\AppData\Local\Temp\ORDER3763873.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2476
- C:\Users\Admin\AppData\Local\Temp\ORDER3763873.exe
  "C:\Users\Admin\AppData\Local\Temp\ORDER3763873.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3612
- - 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:4456

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/2476-130-0x0000000000060000-0x000000000006A000-memory.dmp

Filesize
40KB

Download
memory/2476-131-0x00000000055E0000-0x000000000567C000-memory.dmp

Filesize
624KB

Download
memory/3612-133-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/3612-135-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/3612-138-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/3612-141-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/4456-140-0x0000000001000000-0x0000000001066000-memory.dmp

Filesize
408KB

Download