blustealer | 36dcb265b7a10f3e1ccf2f51e28b7c086675ac2729e19075cf34cb59ba17105f

General

Target

Technical specification_Mexico quote.exe
Size

855KB
MD5

2616d8fe5d13f7a2c5f35428c4e76f0f
SHA1

58ebeeb5b7dd11a8fd372e647c766eb294e2c802
SHA256

36dcb265b7a10f3e1ccf2f51e28b7c086675ac2729e19075cf34cb59ba17105f
SHA512

f5a88e15ec32392095c620b5e765ccb3ff9bac896146f6b226e3a012ab8d7c08e263fa4d3c3b55d1d8f4532cef849af1a9f32b3d492245c787e99cf53c953a4c
SSDEEP

12288:j8ysS5ZKeMMOZ/g2cUOjoYIh5V0wmf2MhDHVb0V5fPTMXtg0mpEpo+g9cK8CD:5jKpejo1b0phDHVePj0mpEpo+4cOD

Score

10^/10

blustealer collection stealer

Malware Config

Extracted

Family

blustealer

C2

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-1-5-21-2548970870-3691742953-3895070203-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-2548970870-3691742953-3895070203-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-2548970870-3691742953-3895070203-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4896 set thread context of 1412	4896	Technical specification_Mexico quote.exe	94
PID 1412 set thread context of 4928	1412	Technical specification_Mexico quote.exe	95

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

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4896	Technical specification_Mexico quote.exe
4896	Technical specification_Mexico quote.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4896	Technical specification_Mexico quote.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1412	Technical specification_Mexico quote.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 4896 wrote to memory of 2672	4896	Technical specification_Mexico quote.exe	93
PID 4896 wrote to memory of 2672	4896	Technical specification_Mexico quote.exe	93
PID 4896 wrote to memory of 2672	4896	Technical specification_Mexico quote.exe	93
PID 4896 wrote to memory of 1412	4896	Technical specification_Mexico quote.exe	94
PID 4896 wrote to memory of 1412	4896	Technical specification_Mexico quote.exe	94
PID 4896 wrote to memory of 1412	4896	Technical specification_Mexico quote.exe	94
PID 4896 wrote to memory of 1412	4896	Technical specification_Mexico quote.exe	94
PID 4896 wrote to memory of 1412	4896	Technical specification_Mexico quote.exe	94
PID 4896 wrote to memory of 1412	4896	Technical specification_Mexico quote.exe	94
PID 4896 wrote to memory of 1412	4896	Technical specification_Mexico quote.exe	94
PID 4896 wrote to memory of 1412	4896	Technical specification_Mexico quote.exe	94
PID 1412 wrote to memory of 4928	1412	Technical specification_Mexico quote.exe	95
PID 1412 wrote to memory of 4928	1412	Technical specification_Mexico quote.exe	95
PID 1412 wrote to memory of 4928	1412	Technical specification_Mexico quote.exe	95
PID 1412 wrote to memory of 4928	1412	Technical specification_Mexico quote.exe	95
PID 1412 wrote to memory of 4928	1412	Technical specification_Mexico quote.exe	95

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2548970870-3691742953-3895070203-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2548970870-3691742953-3895070203-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\Technical specification_Mexico quote.exe
"C:\Users\Admin\AppData\Local\Temp\Technical specification_Mexico quote.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4896
- C:\Users\Admin\AppData\Local\Temp\Technical specification_Mexico quote.exe
  "C:\Users\Admin\AppData\Local\Temp\Technical specification_Mexico quote.exe"
  2⤵
  PID:2672
- C:\Users\Admin\AppData\Local\Temp\Technical specification_Mexico quote.exe
  "C:\Users\Admin\AppData\Local\Temp\Technical specification_Mexico quote.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1412
- - 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:4928

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

Replay Monitor

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Downloads

memory/1412-140-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1412-159-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1412-146-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1412-143-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/4896-136-0x0000000004C40000-0x0000000004C4A000-memory.dmp

Filesize
40KB

Download
memory/4896-138-0x0000000004EF0000-0x0000000004F00000-memory.dmp

Filesize
64KB

Download
memory/4896-139-0x00000000067A0000-0x000000000683C000-memory.dmp

Filesize
624KB

Download
memory/4896-137-0x0000000004EF0000-0x0000000004F00000-memory.dmp

Filesize
64KB

Download
memory/4896-133-0x00000000001A0000-0x000000000027C000-memory.dmp

Filesize
880KB

Download
memory/4896-135-0x0000000004C60000-0x0000000004CF2000-memory.dmp

Filesize
584KB

Download
memory/4896-134-0x0000000005170000-0x0000000005714000-memory.dmp

Filesize
5.6MB

Download
memory/4928-147-0x00000000007C0000-0x0000000000826000-memory.dmp

Filesize
408KB

Download
memory/4928-148-0x0000000004CC0000-0x0000000004CD0000-memory.dmp

Filesize
64KB

Download

Analysis

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