blustealer | 7a7f3604032d3f53d07aed1b918b1d2629c9b0e26bcdee5565ad8cba72370cb2

Analysis

max time kernel
148s
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
20-09-2022 15:05

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

7a7f3604032d3f53d07aed1b918b1d2629c9b0e26bcdee5565ad8cba72370cb2.exe
Size

278KB
MD5

1d1c80aa67bed8372b0f483ca4bc77af
SHA1

178ae2d7d6390369d9cb9ebb74b15a8baecdcb75
SHA256

7a7f3604032d3f53d07aed1b918b1d2629c9b0e26bcdee5565ad8cba72370cb2
SHA512

6cba39a5f8c031677e640f96c0ceefb5b148d8001fd98d2a50aea64cc0c1fc185eaa2d509605ca97e99aff62b13d4863edb0c1fbf168ee4202f6822d685bed01
SSDEEP

6144:3oHFAN2yKhbBTA4Bav5WtyW3P0hUhf2X6A:4HFAWhbBAqyEMhsOX7

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\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
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3140 set thread context of 2572	3140	7a7f3604032d3f53d07aed1b918b1d2629c9b0e26bcdee5565ad8cba72370cb2.exe	78
PID 2572 set thread context of 1668	2572	RegSvcs.exe	81

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 use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3140	7a7f3604032d3f53d07aed1b918b1d2629c9b0e26bcdee5565ad8cba72370cb2.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2572	RegSvcs.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 3140 wrote to memory of 2572	3140	7a7f3604032d3f53d07aed1b918b1d2629c9b0e26bcdee5565ad8cba72370cb2.exe	78
PID 3140 wrote to memory of 2572	3140	7a7f3604032d3f53d07aed1b918b1d2629c9b0e26bcdee5565ad8cba72370cb2.exe	78
PID 3140 wrote to memory of 2572	3140	7a7f3604032d3f53d07aed1b918b1d2629c9b0e26bcdee5565ad8cba72370cb2.exe	78
PID 3140 wrote to memory of 2572	3140	7a7f3604032d3f53d07aed1b918b1d2629c9b0e26bcdee5565ad8cba72370cb2.exe	78
PID 3140 wrote to memory of 2572	3140	7a7f3604032d3f53d07aed1b918b1d2629c9b0e26bcdee5565ad8cba72370cb2.exe	78
PID 3140 wrote to memory of 2572	3140	7a7f3604032d3f53d07aed1b918b1d2629c9b0e26bcdee5565ad8cba72370cb2.exe	78
PID 3140 wrote to memory of 2572	3140	7a7f3604032d3f53d07aed1b918b1d2629c9b0e26bcdee5565ad8cba72370cb2.exe	78
PID 3140 wrote to memory of 2572	3140	7a7f3604032d3f53d07aed1b918b1d2629c9b0e26bcdee5565ad8cba72370cb2.exe	78
PID 2572 wrote to memory of 1668	2572	RegSvcs.exe	81
PID 2572 wrote to memory of 1668	2572	RegSvcs.exe	81
PID 2572 wrote to memory of 1668	2572	RegSvcs.exe	81
PID 2572 wrote to memory of 1668	2572	RegSvcs.exe	81
PID 2572 wrote to memory of 1668	2572	RegSvcs.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\7a7f3604032d3f53d07aed1b918b1d2629c9b0e26bcdee5565ad8cba72370cb2.exe
"C:\Users\Admin\AppData\Local\Temp\7a7f3604032d3f53d07aed1b918b1d2629c9b0e26bcdee5565ad8cba72370cb2.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3140
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2572
- - 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:1668

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

Loading Replay Monitor...

Downloads

memory/1668-142-0x00000000009C0000-0x0000000000A26000-memory.dmp

Filesize
408KB

Download
memory/2572-135-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/2572-137-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/2572-140-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/2572-143-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/3140-132-0x0000000000A80000-0x0000000000ACC000-memory.dmp

Filesize
304KB

Download
memory/3140-133-0x0000000005480000-0x000000000551C000-memory.dmp

Filesize
624KB

Download