blustealer | 1fd4f4c853506d7c826da1ff97789011981c3d41a4bed8d300cf32b3cb7afde8

Analysis

max time kernel
145s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
07-06-2023 12:16

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General

Target

1fd4f4c853506d7c826da1ff97789011981c3d41a4bed8d300cf32b3cb7afde8.exe
Size

428KB
MD5

f77a40d5f587afc009cb42e780046460
SHA1

ad58cf0b1abf1612789d390ce041688274dd7e69
SHA256

1fd4f4c853506d7c826da1ff97789011981c3d41a4bed8d300cf32b3cb7afde8
SHA512

9cbf43bf1c4d7f208e38b989c8bb61a9c2f1a746206f42b8df5882cb60ee3e240f5265ca584e4f3388d51c403d6089ad7b76546b9ee36611575d007fd5a2d0c6
SSDEEP

12288:PWnxfgsRL4u/1AlLK6FRY2n8OPKxGvYmB:oxgsRftD0C2nKG

Score

10^/10

blustealer collection stealer

Malware Config

Extracted

Family

blustealer

https://api.telegram.org/bot5450700540:AAEJyEEV8BKgYUKmnCPZxp19kD9GVSRup5M/sendMessage?chat_id=5422342474

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-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4196 set thread context of 2140	4196	1fd4f4c853506d7c826da1ff97789011981c3d41a4bed8d300cf32b3cb7afde8.exe	82

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

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

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4196	1fd4f4c853506d7c826da1ff97789011981c3d41a4bed8d300cf32b3cb7afde8.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 4196 wrote to memory of 2140	4196	1fd4f4c853506d7c826da1ff97789011981c3d41a4bed8d300cf32b3cb7afde8.exe	82
PID 4196 wrote to memory of 2140	4196	1fd4f4c853506d7c826da1ff97789011981c3d41a4bed8d300cf32b3cb7afde8.exe	82
PID 4196 wrote to memory of 2140	4196	1fd4f4c853506d7c826da1ff97789011981c3d41a4bed8d300cf32b3cb7afde8.exe	82
PID 4196 wrote to memory of 2140	4196	1fd4f4c853506d7c826da1ff97789011981c3d41a4bed8d300cf32b3cb7afde8.exe	82
PID 4196 wrote to memory of 2140	4196	1fd4f4c853506d7c826da1ff97789011981c3d41a4bed8d300cf32b3cb7afde8.exe	82

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\1fd4f4c853506d7c826da1ff97789011981c3d41a4bed8d300cf32b3cb7afde8.exe
"C:\Users\Admin\AppData\Local\Temp\1fd4f4c853506d7c826da1ff97789011981c3d41a4bed8d300cf32b3cb7afde8.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4196
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
  C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
  2⤵
  - Accesses Microsoft Outlook profiles
  - outlook_office_path
  - outlook_win_path
  PID:2140

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

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Downloads

memory/2140-136-0x0000000000B60000-0x0000000000BC6000-memory.dmp

Filesize
408KB

Download
memory/2140-137-0x0000000005650000-0x00000000056EC000-memory.dmp

Filesize
624KB

Download
memory/2140-138-0x0000000001630000-0x0000000001640000-memory.dmp

Filesize
64KB

Download
memory/4196-133-0x0000000000400000-0x000000000046D9E8-memory.dmp

Filesize
438KB

Download
memory/4196-149-0x0000000000400000-0x000000000046D9E8-memory.dmp

Filesize
438KB

Download