blustealer | 02a0b1c2cdeed6baf61d6e94cef63361c46607817ff7ae7ae0fc870471737e68

Analysis

max time kernel
145s
max time network
133s
platform
windows10-1703_x64
resource
win10-20220812-en
resource tags

arch:x64arch:x86image:win10-20220812-enlocale:en-usos:windows10-1703-x64system
submitted
20-09-2022 15:05

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General

Target

02a0b1c2cdeed6baf61d6e94cef63361c46607817ff7ae7ae0fc870471737e68.exe
Size

278KB
MD5

01504654567e766fae3aa3032bd6961f
SHA1

b1e527d712ede2057172b54178367f8a844f7183
SHA256

02a0b1c2cdeed6baf61d6e94cef63361c46607817ff7ae7ae0fc870471737e68
SHA512

54644c1b1c92dc4c923b225a351cbcafb469c8c35cc186f97bd7014af32a8e162d8d8b4e57515faac2a17e99fe9035f1e6208f81dbc5a962e9ac9e0743f847fc
SSDEEP

6144:lmlBUNYOACHBwA4Oav5Atl40KBeQDhfdmWA:wlBUOCHBIAlCBeiU/

Score

10^/10

blustealer collection stealer

Malware Config

Extracted

Family

blustealer

https://api.telegram.org/bot5351997584:AAEyh4aj9rNp8tJtHYZqoYG-PSzq-z5M18M/sendMessage?chat_id=1374455932

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-1-5-21-1099808672-3828198950-1535142148-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-1099808672-3828198950-1535142148-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-1099808672-3828198950-1535142148-1000\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 2244 set thread context of 3480	2244	02a0b1c2cdeed6baf61d6e94cef63361c46607817ff7ae7ae0fc870471737e68.exe	67
PID 3480 set thread context of 5000	3480	RegAsm.exe	68

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

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2244	02a0b1c2cdeed6baf61d6e94cef63361c46607817ff7ae7ae0fc870471737e68.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3480	RegAsm.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 2244 wrote to memory of 3480	2244	02a0b1c2cdeed6baf61d6e94cef63361c46607817ff7ae7ae0fc870471737e68.exe	67
PID 2244 wrote to memory of 3480	2244	02a0b1c2cdeed6baf61d6e94cef63361c46607817ff7ae7ae0fc870471737e68.exe	67
PID 2244 wrote to memory of 3480	2244	02a0b1c2cdeed6baf61d6e94cef63361c46607817ff7ae7ae0fc870471737e68.exe	67
PID 2244 wrote to memory of 3480	2244	02a0b1c2cdeed6baf61d6e94cef63361c46607817ff7ae7ae0fc870471737e68.exe	67
PID 2244 wrote to memory of 3480	2244	02a0b1c2cdeed6baf61d6e94cef63361c46607817ff7ae7ae0fc870471737e68.exe	67
PID 2244 wrote to memory of 3480	2244	02a0b1c2cdeed6baf61d6e94cef63361c46607817ff7ae7ae0fc870471737e68.exe	67
PID 2244 wrote to memory of 3480	2244	02a0b1c2cdeed6baf61d6e94cef63361c46607817ff7ae7ae0fc870471737e68.exe	67
PID 2244 wrote to memory of 3480	2244	02a0b1c2cdeed6baf61d6e94cef63361c46607817ff7ae7ae0fc870471737e68.exe	67
PID 3480 wrote to memory of 5000	3480	RegAsm.exe	68
PID 3480 wrote to memory of 5000	3480	RegAsm.exe	68
PID 3480 wrote to memory of 5000	3480	RegAsm.exe	68
PID 3480 wrote to memory of 5000	3480	RegAsm.exe	68
PID 3480 wrote to memory of 5000	3480	RegAsm.exe	68

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1099808672-3828198950-1535142148-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1099808672-3828198950-1535142148-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\02a0b1c2cdeed6baf61d6e94cef63361c46607817ff7ae7ae0fc870471737e68.exe
"C:\Users\Admin\AppData\Local\Temp\02a0b1c2cdeed6baf61d6e94cef63361c46607817ff7ae7ae0fc870471737e68.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2244
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3480
- - 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:5000

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/2244-116-0x0000000077470000-0x00000000775FE000-memory.dmp

Filesize
1.6MB

Download
memory/2244-117-0x0000000077470000-0x00000000775FE000-memory.dmp

Filesize
1.6MB

Download
memory/2244-118-0x0000000077470000-0x00000000775FE000-memory.dmp

Filesize
1.6MB

Download
memory/2244-119-0x0000000077470000-0x00000000775FE000-memory.dmp

Filesize
1.6MB

Download
memory/2244-120-0x0000000077470000-0x00000000775FE000-memory.dmp

Filesize
1.6MB

Download
memory/2244-121-0x0000000077470000-0x00000000775FE000-memory.dmp

Filesize
1.6MB

Download
memory/2244-122-0x0000000077470000-0x00000000775FE000-memory.dmp

Filesize
1.6MB

Download
memory/2244-123-0x0000000077470000-0x00000000775FE000-memory.dmp

Filesize
1.6MB

Download
memory/2244-124-0x0000000077470000-0x00000000775FE000-memory.dmp

Filesize
1.6MB

Download
memory/2244-125-0x0000000077470000-0x00000000775FE000-memory.dmp

Filesize
1.6MB

Download
memory/2244-126-0x0000000077470000-0x00000000775FE000-memory.dmp

Filesize
1.6MB

Download
memory/2244-127-0x0000000077470000-0x00000000775FE000-memory.dmp

Filesize
1.6MB

Download
memory/2244-128-0x0000000077470000-0x00000000775FE000-memory.dmp

Filesize
1.6MB

Download
memory/2244-129-0x0000000077470000-0x00000000775FE000-memory.dmp

Filesize
1.6MB

Download
memory/2244-130-0x0000000077470000-0x00000000775FE000-memory.dmp

Filesize
1.6MB

Download
memory/2244-131-0x0000000077470000-0x00000000775FE000-memory.dmp

Filesize
1.6MB

Download
memory/2244-132-0x0000000077470000-0x00000000775FE000-memory.dmp

Filesize
1.6MB

Download
memory/2244-133-0x0000000077470000-0x00000000775FE000-memory.dmp

Filesize
1.6MB

Download
memory/2244-134-0x0000000077470000-0x00000000775FE000-memory.dmp

Filesize
1.6MB

Download
memory/2244-135-0x0000000077470000-0x00000000775FE000-memory.dmp

Filesize
1.6MB

Download
memory/2244-136-0x0000000077470000-0x00000000775FE000-memory.dmp

Filesize
1.6MB

Download
memory/2244-137-0x0000000077470000-0x00000000775FE000-memory.dmp

Filesize
1.6MB

Download
memory/2244-138-0x0000000077470000-0x00000000775FE000-memory.dmp

Filesize
1.6MB

Download
memory/2244-139-0x0000000077470000-0x00000000775FE000-memory.dmp

Filesize
1.6MB

Download
memory/2244-140-0x0000000077470000-0x00000000775FE000-memory.dmp

Filesize
1.6MB

Download
memory/2244-141-0x0000000077470000-0x00000000775FE000-memory.dmp

Filesize
1.6MB

Download
memory/2244-142-0x0000000077470000-0x00000000775FE000-memory.dmp

Filesize
1.6MB

Download
memory/2244-143-0x0000000077470000-0x00000000775FE000-memory.dmp

Filesize
1.6MB

Download
memory/2244-144-0x0000000077470000-0x00000000775FE000-memory.dmp

Filesize
1.6MB

Download
memory/2244-145-0x0000000077470000-0x00000000775FE000-memory.dmp

Filesize
1.6MB

Download
memory/2244-146-0x0000000077470000-0x00000000775FE000-memory.dmp

Filesize
1.6MB

Download
memory/2244-147-0x0000000077470000-0x00000000775FE000-memory.dmp

Filesize
1.6MB

Download
memory/2244-148-0x0000000077470000-0x00000000775FE000-memory.dmp

Filesize
1.6MB

Download
memory/2244-149-0x0000000077470000-0x00000000775FE000-memory.dmp

Filesize
1.6MB

Download
memory/2244-150-0x0000000000370000-0x00000000003BC000-memory.dmp

Filesize
304KB

Download
memory/2244-151-0x0000000077470000-0x00000000775FE000-memory.dmp

Filesize
1.6MB

Download
memory/2244-152-0x0000000077470000-0x00000000775FE000-memory.dmp

Filesize
1.6MB

Download
memory/2244-153-0x0000000077470000-0x00000000775FE000-memory.dmp

Filesize
1.6MB

Download
memory/2244-154-0x0000000077470000-0x00000000775FE000-memory.dmp

Filesize
1.6MB

Download
memory/2244-155-0x0000000077470000-0x00000000775FE000-memory.dmp

Filesize
1.6MB

Download
memory/2244-156-0x0000000077470000-0x00000000775FE000-memory.dmp

Filesize
1.6MB

Download
memory/2244-157-0x0000000077470000-0x00000000775FE000-memory.dmp

Filesize
1.6MB

Download
memory/2244-158-0x0000000077470000-0x00000000775FE000-memory.dmp

Filesize
1.6MB

Download
memory/2244-159-0x0000000077470000-0x00000000775FE000-memory.dmp

Filesize
1.6MB

Download
memory/2244-160-0x0000000077470000-0x00000000775FE000-memory.dmp

Filesize
1.6MB

Download
memory/2244-161-0x0000000077470000-0x00000000775FE000-memory.dmp

Filesize
1.6MB

Download
memory/2244-162-0x0000000077470000-0x00000000775FE000-memory.dmp

Filesize
1.6MB

Download
memory/2244-163-0x0000000077470000-0x00000000775FE000-memory.dmp

Filesize
1.6MB

Download
memory/2244-164-0x0000000077470000-0x00000000775FE000-memory.dmp

Filesize
1.6MB

Download
memory/2244-165-0x0000000077470000-0x00000000775FE000-memory.dmp

Filesize
1.6MB

Download
memory/2244-166-0x0000000077470000-0x00000000775FE000-memory.dmp

Filesize
1.6MB

Download
memory/2244-167-0x0000000004BE0000-0x0000000004C7C000-memory.dmp

Filesize
624KB

Download
memory/2244-168-0x0000000077470000-0x00000000775FE000-memory.dmp

Filesize
1.6MB

Download
memory/2244-169-0x0000000077470000-0x00000000775FE000-memory.dmp

Filesize
1.6MB

Download
memory/2244-170-0x0000000077470000-0x00000000775FE000-memory.dmp

Filesize
1.6MB

Download
memory/2244-171-0x0000000077470000-0x00000000775FE000-memory.dmp

Filesize
1.6MB

Download
memory/2244-172-0x0000000077470000-0x00000000775FE000-memory.dmp

Filesize
1.6MB

Download
memory/2244-173-0x0000000077470000-0x00000000775FE000-memory.dmp

Filesize
1.6MB

Download
memory/2244-174-0x0000000077470000-0x00000000775FE000-memory.dmp

Filesize
1.6MB

Download
memory/2244-175-0x0000000077470000-0x00000000775FE000-memory.dmp

Filesize
1.6MB

Download
memory/2244-176-0x0000000077470000-0x00000000775FE000-memory.dmp

Filesize
1.6MB

Download
memory/2244-177-0x0000000077470000-0x00000000775FE000-memory.dmp

Filesize
1.6MB

Download
memory/2244-178-0x0000000077470000-0x00000000775FE000-memory.dmp

Filesize
1.6MB

Download
memory/2244-179-0x0000000077470000-0x00000000775FE000-memory.dmp

Filesize
1.6MB

Download
memory/2244-180-0x0000000077470000-0x00000000775FE000-memory.dmp

Filesize
1.6MB

Download
memory/2244-181-0x0000000077470000-0x00000000775FE000-memory.dmp

Filesize
1.6MB

Download
memory/2244-196-0x0000000004BC0000-0x0000000004BE4000-memory.dmp

Filesize
144KB

Download
memory/3480-255-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/3480-821-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/5000-297-0x0000000000900000-0x0000000000966000-memory.dmp

Filesize
408KB

Download
memory/5000-305-0x0000000008E30000-0x0000000008EEC000-memory.dmp

Filesize
752KB

Download