blustealer | b59c940c2bd7745c6aeacb811f9ff924c6f0260b05e1dd4270a0e9444354def7

Analysis

max time kernel
150s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20220721-en
resource tags

arch:x64arch:x86image:win10v2004-20220721-enlocale:en-usos:windows10-2004-x64system
submitted
05/08/2022, 06:58

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General

Target

SecuriteInfo.com.W32.AIDetectNet.01.19595.exe
Size

2.4MB
MD5

43e203dd0117ad1c79dc400e5bbb710e
SHA1

fb283a29b1979bec6114dd9fd8ae777f175a02d0
SHA256

b59c940c2bd7745c6aeacb811f9ff924c6f0260b05e1dd4270a0e9444354def7
SHA512

aab2b59e61a5221a26e149d07670c43ba58486233b07d5444758808ec0ea9788b6dab7ad063068acb981955336f87c047006f89b68975c2b3f6f0f089bec69ca

Score

10^/10

blustealer collection stealer

Malware Config

Extracted

Family

blustealer

https://api.telegram.org/bot5446953292:AAFkDq-HVam91vjV2SXkAWjbhfkBnxaPoa4/sendMessage?chat_id=1269002131

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-1-5-21-1101907861-274115917-2188613224-1000\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 4720 set thread context of 2948	4720	SecuriteInfo.com.W32.AIDetectNet.01.19595.exe	82
PID 2948 set thread context of 4616	2948	MSBuild.exe	85

Script User-Agent 1 IoCs

Uses user-agent string associated with script host/environment.

description	flow	ioc
HTTP User-Agent header	21	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4720	SecuriteInfo.com.W32.AIDetectNet.01.19595.exe
4720	SecuriteInfo.com.W32.AIDetectNet.01.19595.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4720	SecuriteInfo.com.W32.AIDetectNet.01.19595.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2948	MSBuild.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 4720 wrote to memory of 2948	4720	SecuriteInfo.com.W32.AIDetectNet.01.19595.exe	82
PID 4720 wrote to memory of 2948	4720	SecuriteInfo.com.W32.AIDetectNet.01.19595.exe	82
PID 4720 wrote to memory of 2948	4720	SecuriteInfo.com.W32.AIDetectNet.01.19595.exe	82
PID 4720 wrote to memory of 2948	4720	SecuriteInfo.com.W32.AIDetectNet.01.19595.exe	82
PID 4720 wrote to memory of 2948	4720	SecuriteInfo.com.W32.AIDetectNet.01.19595.exe	82
PID 4720 wrote to memory of 2948	4720	SecuriteInfo.com.W32.AIDetectNet.01.19595.exe	82
PID 4720 wrote to memory of 2948	4720	SecuriteInfo.com.W32.AIDetectNet.01.19595.exe	82
PID 4720 wrote to memory of 2948	4720	SecuriteInfo.com.W32.AIDetectNet.01.19595.exe	82
PID 2948 wrote to memory of 4616	2948	MSBuild.exe	85
PID 2948 wrote to memory of 4616	2948	MSBuild.exe	85
PID 2948 wrote to memory of 4616	2948	MSBuild.exe	85
PID 2948 wrote to memory of 4616	2948	MSBuild.exe	85
PID 2948 wrote to memory of 4616	2948	MSBuild.exe	85

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\SecuriteInfo.com.W32.AIDetectNet.01.19595.exe
"C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.W32.AIDetectNet.01.19595.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4720
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2948
- - 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:4616

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Email Collection

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2948-135-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2948-137-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2948-140-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2948-144-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/4616-142-0x0000000000B40000-0x0000000000BA6000-memory.dmp

Filesize
408KB

Download
memory/4616-143-0x0000000005200000-0x000000000529C000-memory.dmp

Filesize
624KB

Download
memory/4720-130-0x0000000000BD0000-0x0000000000E40000-memory.dmp

Filesize
2.4MB

Download
memory/4720-131-0x0000000005C90000-0x0000000006234000-memory.dmp

Filesize
5.6MB

Download
memory/4720-132-0x00000000057D0000-0x0000000005862000-memory.dmp

Filesize
584KB

Download
memory/4720-133-0x00000000058A0000-0x00000000058C2000-memory.dmp

Filesize
136KB

Download