blustealer | 5305a639404d8e4027a3798aefba5ee13a82f8af1526b4356752aafce27fa433

General

Target
c269b1931db163462343d0ecd8ef501e35e4da91c91f1464c8d526ef07a041bd.exe
Size 1.1MB
Sample230323-cctstaeg5y
SHA256 c269b1931db163462343d0ecd8ef501e35e4da91c91f1464c8d526ef07a041bd
MD5 e434e422d6bb9bc02f9a4be0b1c41d1b
SHA1 af7347b789fb43b26a83f4864e50eedf7f62095e
SHA512 72ffed26dfa5617a70852e88d8058d6adebcbd771bc3f0102f8fcf9bdddcac2264b37d07b5fd4790c177ad87f81fce0253ff9fc85c22f8034c066e66df657552
SSDEEP 24576:nVlj9vY9URDvRtWBQDtty/ziBgqMSAqzQYkYJrrzZL:nVB9g9YDptWuryduIA1L
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

blustealer collection stealer

Malware Config

Extracted

Family

blustealer

C2

https://api.telegram.org/bot5797428905:AAGaRRXGZN1d9GGFd3sE5x4uSpCGF0PU4m4/sendMessage?chat_id=1251788325

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-1-5-21-4238149048-355649189-894321705-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-4238149048-355649189-894321705-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-4238149048-355649189-894321705-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3964 set thread context of 4544	3964	c269b1931db163462343d0ecd8ef501e35e4da91c91f1464c8d526ef07a041bd.exe	98
PID 4544 set thread context of 4000	4544	c269b1931db163462343d0ecd8ef501e35e4da91c91f1464c8d526ef07a041bd.exe	101

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

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

Suspicious behavior: EnumeratesProcesses 15 IoCs

pid	Process
3964	c269b1931db163462343d0ecd8ef501e35e4da91c91f1464c8d526ef07a041bd.exe
3964	c269b1931db163462343d0ecd8ef501e35e4da91c91f1464c8d526ef07a041bd.exe
3964	c269b1931db163462343d0ecd8ef501e35e4da91c91f1464c8d526ef07a041bd.exe
3964	c269b1931db163462343d0ecd8ef501e35e4da91c91f1464c8d526ef07a041bd.exe
3964	c269b1931db163462343d0ecd8ef501e35e4da91c91f1464c8d526ef07a041bd.exe
3964	c269b1931db163462343d0ecd8ef501e35e4da91c91f1464c8d526ef07a041bd.exe
3964	c269b1931db163462343d0ecd8ef501e35e4da91c91f1464c8d526ef07a041bd.exe
3964	c269b1931db163462343d0ecd8ef501e35e4da91c91f1464c8d526ef07a041bd.exe
3964	c269b1931db163462343d0ecd8ef501e35e4da91c91f1464c8d526ef07a041bd.exe
3964	c269b1931db163462343d0ecd8ef501e35e4da91c91f1464c8d526ef07a041bd.exe
3964	c269b1931db163462343d0ecd8ef501e35e4da91c91f1464c8d526ef07a041bd.exe
3964	c269b1931db163462343d0ecd8ef501e35e4da91c91f1464c8d526ef07a041bd.exe
3964	c269b1931db163462343d0ecd8ef501e35e4da91c91f1464c8d526ef07a041bd.exe
3964	c269b1931db163462343d0ecd8ef501e35e4da91c91f1464c8d526ef07a041bd.exe
3964	c269b1931db163462343d0ecd8ef501e35e4da91c91f1464c8d526ef07a041bd.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3964	c269b1931db163462343d0ecd8ef501e35e4da91c91f1464c8d526ef07a041bd.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4544	c269b1931db163462343d0ecd8ef501e35e4da91c91f1464c8d526ef07a041bd.exe

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 3964 wrote to memory of 4452	3964	c269b1931db163462343d0ecd8ef501e35e4da91c91f1464c8d526ef07a041bd.exe	94
PID 3964 wrote to memory of 4452	3964	c269b1931db163462343d0ecd8ef501e35e4da91c91f1464c8d526ef07a041bd.exe	94
PID 3964 wrote to memory of 4452	3964	c269b1931db163462343d0ecd8ef501e35e4da91c91f1464c8d526ef07a041bd.exe	94
PID 3964 wrote to memory of 3016	3964	c269b1931db163462343d0ecd8ef501e35e4da91c91f1464c8d526ef07a041bd.exe	95
PID 3964 wrote to memory of 3016	3964	c269b1931db163462343d0ecd8ef501e35e4da91c91f1464c8d526ef07a041bd.exe	95
PID 3964 wrote to memory of 3016	3964	c269b1931db163462343d0ecd8ef501e35e4da91c91f1464c8d526ef07a041bd.exe	95
PID 3964 wrote to memory of 1428	3964	c269b1931db163462343d0ecd8ef501e35e4da91c91f1464c8d526ef07a041bd.exe	96
PID 3964 wrote to memory of 1428	3964	c269b1931db163462343d0ecd8ef501e35e4da91c91f1464c8d526ef07a041bd.exe	96
PID 3964 wrote to memory of 1428	3964	c269b1931db163462343d0ecd8ef501e35e4da91c91f1464c8d526ef07a041bd.exe	96
PID 3964 wrote to memory of 3836	3964	c269b1931db163462343d0ecd8ef501e35e4da91c91f1464c8d526ef07a041bd.exe	97
PID 3964 wrote to memory of 3836	3964	c269b1931db163462343d0ecd8ef501e35e4da91c91f1464c8d526ef07a041bd.exe	97
PID 3964 wrote to memory of 3836	3964	c269b1931db163462343d0ecd8ef501e35e4da91c91f1464c8d526ef07a041bd.exe	97
PID 3964 wrote to memory of 4544	3964	c269b1931db163462343d0ecd8ef501e35e4da91c91f1464c8d526ef07a041bd.exe	98
PID 3964 wrote to memory of 4544	3964	c269b1931db163462343d0ecd8ef501e35e4da91c91f1464c8d526ef07a041bd.exe	98
PID 3964 wrote to memory of 4544	3964	c269b1931db163462343d0ecd8ef501e35e4da91c91f1464c8d526ef07a041bd.exe	98
PID 3964 wrote to memory of 4544	3964	c269b1931db163462343d0ecd8ef501e35e4da91c91f1464c8d526ef07a041bd.exe	98
PID 3964 wrote to memory of 4544	3964	c269b1931db163462343d0ecd8ef501e35e4da91c91f1464c8d526ef07a041bd.exe	98
PID 3964 wrote to memory of 4544	3964	c269b1931db163462343d0ecd8ef501e35e4da91c91f1464c8d526ef07a041bd.exe	98
PID 3964 wrote to memory of 4544	3964	c269b1931db163462343d0ecd8ef501e35e4da91c91f1464c8d526ef07a041bd.exe	98
PID 3964 wrote to memory of 4544	3964	c269b1931db163462343d0ecd8ef501e35e4da91c91f1464c8d526ef07a041bd.exe	98
PID 4544 wrote to memory of 4000	4544	c269b1931db163462343d0ecd8ef501e35e4da91c91f1464c8d526ef07a041bd.exe	101
PID 4544 wrote to memory of 4000	4544	c269b1931db163462343d0ecd8ef501e35e4da91c91f1464c8d526ef07a041bd.exe	101
PID 4544 wrote to memory of 4000	4544	c269b1931db163462343d0ecd8ef501e35e4da91c91f1464c8d526ef07a041bd.exe	101
PID 4544 wrote to memory of 4000	4544	c269b1931db163462343d0ecd8ef501e35e4da91c91f1464c8d526ef07a041bd.exe	101
PID 4544 wrote to memory of 4000	4544	c269b1931db163462343d0ecd8ef501e35e4da91c91f1464c8d526ef07a041bd.exe	101

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4238149048-355649189-894321705-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4238149048-355649189-894321705-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\c269b1931db163462343d0ecd8ef501e35e4da91c91f1464c8d526ef07a041bd.exe
"C:\Users\Admin\AppData\Local\Temp\c269b1931db163462343d0ecd8ef501e35e4da91c91f1464c8d526ef07a041bd.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3964
- C:\Users\Admin\AppData\Local\Temp\c269b1931db163462343d0ecd8ef501e35e4da91c91f1464c8d526ef07a041bd.exe
  "C:\Users\Admin\AppData\Local\Temp\c269b1931db163462343d0ecd8ef501e35e4da91c91f1464c8d526ef07a041bd.exe"
  2⤵
  PID:4452
- C:\Users\Admin\AppData\Local\Temp\c269b1931db163462343d0ecd8ef501e35e4da91c91f1464c8d526ef07a041bd.exe
  "C:\Users\Admin\AppData\Local\Temp\c269b1931db163462343d0ecd8ef501e35e4da91c91f1464c8d526ef07a041bd.exe"
  2⤵
  PID:3016
- C:\Users\Admin\AppData\Local\Temp\c269b1931db163462343d0ecd8ef501e35e4da91c91f1464c8d526ef07a041bd.exe
  "C:\Users\Admin\AppData\Local\Temp\c269b1931db163462343d0ecd8ef501e35e4da91c91f1464c8d526ef07a041bd.exe"
  2⤵
  PID:1428
- C:\Users\Admin\AppData\Local\Temp\c269b1931db163462343d0ecd8ef501e35e4da91c91f1464c8d526ef07a041bd.exe
  "C:\Users\Admin\AppData\Local\Temp\c269b1931db163462343d0ecd8ef501e35e4da91c91f1464c8d526ef07a041bd.exe"
  2⤵
  PID:3836
- C:\Users\Admin\AppData\Local\Temp\c269b1931db163462343d0ecd8ef501e35e4da91c91f1464c8d526ef07a041bd.exe
  "C:\Users\Admin\AppData\Local\Temp\c269b1931db163462343d0ecd8ef501e35e4da91c91f1464c8d526ef07a041bd.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4544
- - 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:4000

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Email Collection

1

T1114

Command and Control

Exfiltration

Impact

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Downloads

memory/3964-133-0x0000000000F90000-0x00000000010A8000-memory.dmp

Download

memory/3964-134-0x0000000005B10000-0x0000000005B20000-memory.dmp

Download

memory/3964-135-0x0000000006140000-0x00000000066E4000-memory.dmp

Download

memory/3964-136-0x0000000005C30000-0x0000000005CC2000-memory.dmp

Download

memory/3964-137-0x0000000005B10000-0x0000000005B20000-memory.dmp

Download

memory/3964-138-0x0000000007490000-0x000000000752C000-memory.dmp

Download

memory/4000-146-0x00000000008D0000-0x0000000000936000-memory.dmp

Download

memory/4000-147-0x0000000005070000-0x0000000005080000-memory.dmp

Download

memory/4544-139-0x0000000000400000-0x000000000046E000-memory.dmp

Download

memory/4544-142-0x0000000000400000-0x000000000046E000-memory.dmp

Download

memory/4544-145-0x0000000000400000-0x000000000046E000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads