blustealer | 2e58a9fe640311fd721558f88275088aebe5333936b2d606264220d361c6de90

Analysis

max time kernel
145s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
21-09-2022 06:15

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General

Target

55e7ae74a44323c6d513247d3e863be0.exe
Size

278KB
MD5

55e7ae74a44323c6d513247d3e863be0
SHA1

78153fac76ddeff2c6abbbb258f1bc1eaf81e20e
SHA256

2e58a9fe640311fd721558f88275088aebe5333936b2d606264220d361c6de90
SHA512

01cab8b425a5b2f116f8cff745402f03ee0755fad0663105b498cef8292748c052cac5ddf57f52b650771aea1d0baa890f1fd6327a45ff3c338bf98d2dfe9214
SSDEEP

6144:NoHFAN2yKhbBMA4Rav5nthcUMdthf1WlA:eHFAWhbBHbhcUEntWC

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-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\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 4808 set thread context of 2868	4808	55e7ae74a44323c6d513247d3e863be0.exe	80
PID 2868 set thread context of 4084	2868	MSBuild.exe	81

Script User-Agent 1 IoCs

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

description	flow	ioc
HTTP User-Agent header	10	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4808	55e7ae74a44323c6d513247d3e863be0.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2868	MSBuild.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 4808 wrote to memory of 2868	4808	55e7ae74a44323c6d513247d3e863be0.exe	80
PID 4808 wrote to memory of 2868	4808	55e7ae74a44323c6d513247d3e863be0.exe	80
PID 4808 wrote to memory of 2868	4808	55e7ae74a44323c6d513247d3e863be0.exe	80
PID 4808 wrote to memory of 2868	4808	55e7ae74a44323c6d513247d3e863be0.exe	80
PID 4808 wrote to memory of 2868	4808	55e7ae74a44323c6d513247d3e863be0.exe	80
PID 4808 wrote to memory of 2868	4808	55e7ae74a44323c6d513247d3e863be0.exe	80
PID 4808 wrote to memory of 2868	4808	55e7ae74a44323c6d513247d3e863be0.exe	80
PID 4808 wrote to memory of 2868	4808	55e7ae74a44323c6d513247d3e863be0.exe	80
PID 2868 wrote to memory of 4084	2868	MSBuild.exe	81
PID 2868 wrote to memory of 4084	2868	MSBuild.exe	81
PID 2868 wrote to memory of 4084	2868	MSBuild.exe	81
PID 2868 wrote to memory of 4084	2868	MSBuild.exe	81
PID 2868 wrote to memory of 4084	2868	MSBuild.exe	81

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\55e7ae74a44323c6d513247d3e863be0.exe
"C:\Users\Admin\AppData\Local\Temp\55e7ae74a44323c6d513247d3e863be0.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4808
- 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:2868
- - 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:4084

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

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Downloads

memory/2868-135-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/2868-137-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/2868-140-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/2868-143-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/4084-142-0x0000000000F40000-0x0000000000FA6000-memory.dmp

Filesize
408KB

Download
memory/4808-132-0x0000000000070000-0x00000000000BC000-memory.dmp

Filesize
304KB

Download
memory/4808-133-0x0000000004B10000-0x0000000004BAC000-memory.dmp

Filesize
624KB

Download