blustealer | 91be6258668b873244ec00091e663437dbb0967ee31406538376560de2b9a0e2

Analysis

max time kernel
148s
max time network
134s
platform
windows10-2004_x64
resource
win10v2004-20220721-en
resource tags

arch:x64arch:x86image:win10v2004-20220721-enlocale:en-usos:windows10-2004-x64system
submitted
04-08-2022 08:57

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General

Target

SecuriteInfo.com.Variant.Barys.42241.11208.exe
Size

873KB
MD5

0cf7d7bfef7f90ec7738d843de48f8b0
SHA1

1d1acaa521f0b04301d350831c97d0d4cc34e2f7
SHA256

91be6258668b873244ec00091e663437dbb0967ee31406538376560de2b9a0e2
SHA512

43a22929ffc929f4b4de106b307bd68b50a82d34166f12b300411e530066912872d1e321562e7747aa40a5c75fa955e06391db6d2adaef98a76f42ff8dd5c61a

Score

10^/10

blustealer collection stealer

Malware Config

Extracted

Family

blustealer

https://api.telegram.org/bot5449766717:AAHzRorvKI5URgvleGHlq6ZvqElY68-XL18/sendMessage?chat_id=1293496579

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 2448 set thread context of 3412	2448	SecuriteInfo.com.Variant.Barys.42241.11208.exe	83
PID 3412 set thread context of 2056	3412	MSBuild.exe	86

Script User-Agent 1 IoCs

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

description	flow	ioc
HTTP User-Agent header	20	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2448	SecuriteInfo.com.Variant.Barys.42241.11208.exe
2448	SecuriteInfo.com.Variant.Barys.42241.11208.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2448	SecuriteInfo.com.Variant.Barys.42241.11208.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3412	MSBuild.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 2448 wrote to memory of 3412	2448	SecuriteInfo.com.Variant.Barys.42241.11208.exe	83
PID 2448 wrote to memory of 3412	2448	SecuriteInfo.com.Variant.Barys.42241.11208.exe	83
PID 2448 wrote to memory of 3412	2448	SecuriteInfo.com.Variant.Barys.42241.11208.exe	83
PID 2448 wrote to memory of 3412	2448	SecuriteInfo.com.Variant.Barys.42241.11208.exe	83
PID 2448 wrote to memory of 3412	2448	SecuriteInfo.com.Variant.Barys.42241.11208.exe	83
PID 2448 wrote to memory of 3412	2448	SecuriteInfo.com.Variant.Barys.42241.11208.exe	83
PID 2448 wrote to memory of 3412	2448	SecuriteInfo.com.Variant.Barys.42241.11208.exe	83
PID 2448 wrote to memory of 3412	2448	SecuriteInfo.com.Variant.Barys.42241.11208.exe	83
PID 3412 wrote to memory of 2056	3412	MSBuild.exe	86
PID 3412 wrote to memory of 2056	3412	MSBuild.exe	86
PID 3412 wrote to memory of 2056	3412	MSBuild.exe	86
PID 3412 wrote to memory of 2056	3412	MSBuild.exe	86
PID 3412 wrote to memory of 2056	3412	MSBuild.exe	86

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.Variant.Barys.42241.11208.exe
"C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Variant.Barys.42241.11208.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2448
- 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:3412
- - 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:2056

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/2056-141-0x0000000001200000-0x0000000001266000-memory.dmp

Filesize
408KB

Download
memory/2056-142-0x00000000058A0000-0x000000000593C000-memory.dmp

Filesize
624KB

Download
memory/2448-130-0x0000000000240000-0x0000000000320000-memory.dmp

Filesize
896KB

Download
memory/2448-131-0x0000000005180000-0x0000000005724000-memory.dmp

Filesize
5.6MB

Download
memory/2448-132-0x0000000004E50000-0x0000000004E72000-memory.dmp

Filesize
136KB

Download
memory/3412-134-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/3412-136-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/3412-139-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/3412-143-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download