blustealer | 3a1a57f4172c2c2b58c164dd690b3d8928304dfc0455c604d061a80c7120c3c5

General

Target

DHL_Y_DO.EXE.exe
Size

1.0MB
MD5

e15f0572398fc74b2b421e8587180571
SHA1

8e62593eafc506f657cead19df4a97c29177faf2
SHA256

3a1a57f4172c2c2b58c164dd690b3d8928304dfc0455c604d061a80c7120c3c5
SHA512

170bb25de8d34400f07f7b016114ac5b5416d1971c697b65c6631689b7f8c8ed573e689a502486fb7d1f4400edc19f83c0fb3fed05aee4893856ad44c6af0ba7
SSDEEP

12288:cofEu5grX48OvLwUlzXmf9fw9F7I0KzlO/cZ6FeejWRbTD5x9GRnGCZn0lkO:mX45LmNwLMzlKcZ6FliJ31yXWl1

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-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\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 1848 set thread context of 1272	1848	DHL_Y_DO.EXE.exe	28
PID 1272 set thread context of 1440	1272	DHL_Y_DO.EXE.exe	29

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

System Information Discovery
T1082

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1272	DHL_Y_DO.EXE.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 1848 wrote to memory of 1272	1848	DHL_Y_DO.EXE.exe	28
PID 1848 wrote to memory of 1272	1848	DHL_Y_DO.EXE.exe	28
PID 1848 wrote to memory of 1272	1848	DHL_Y_DO.EXE.exe	28
PID 1848 wrote to memory of 1272	1848	DHL_Y_DO.EXE.exe	28
PID 1848 wrote to memory of 1272	1848	DHL_Y_DO.EXE.exe	28
PID 1848 wrote to memory of 1272	1848	DHL_Y_DO.EXE.exe	28
PID 1848 wrote to memory of 1272	1848	DHL_Y_DO.EXE.exe	28
PID 1848 wrote to memory of 1272	1848	DHL_Y_DO.EXE.exe	28
PID 1848 wrote to memory of 1272	1848	DHL_Y_DO.EXE.exe	28
PID 1272 wrote to memory of 1440	1272	DHL_Y_DO.EXE.exe	29
PID 1272 wrote to memory of 1440	1272	DHL_Y_DO.EXE.exe	29
PID 1272 wrote to memory of 1440	1272	DHL_Y_DO.EXE.exe	29
PID 1272 wrote to memory of 1440	1272	DHL_Y_DO.EXE.exe	29
PID 1272 wrote to memory of 1440	1272	DHL_Y_DO.EXE.exe	29
PID 1272 wrote to memory of 1440	1272	DHL_Y_DO.EXE.exe	29
PID 1272 wrote to memory of 1440	1272	DHL_Y_DO.EXE.exe	29
PID 1272 wrote to memory of 1440	1272	DHL_Y_DO.EXE.exe	29
PID 1272 wrote to memory of 1440	1272	DHL_Y_DO.EXE.exe	29

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\DHL_Y_DO.EXE.exe
"C:\Users\Admin\AppData\Local\Temp\DHL_Y_DO.EXE.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1848
- C:\Users\Admin\AppData\Local\Temp\DHL_Y_DO.EXE.exe
  "C:\Users\Admin\AppData\Local\Temp\DHL_Y_DO.EXE.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1272
- - 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:1440

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/1272-63-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1272-83-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1272-71-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1272-68-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1272-65-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1272-60-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1272-61-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1440-73-0x0000000000090000-0x00000000000F6000-memory.dmp

Filesize
408KB

Download
memory/1440-75-0x0000000000090000-0x00000000000F6000-memory.dmp

Filesize
408KB

Download
memory/1440-78-0x0000000000090000-0x00000000000F6000-memory.dmp

Filesize
408KB

Download
memory/1440-80-0x0000000000090000-0x00000000000F6000-memory.dmp

Filesize
408KB

Download
memory/1440-82-0x0000000001040000-0x00000000010FC000-memory.dmp

Filesize
752KB

Download
memory/1848-59-0x0000000005F30000-0x0000000005FA4000-memory.dmp

Filesize
464KB

Download
memory/1848-58-0x0000000005D60000-0x0000000005E2A000-memory.dmp

Filesize
808KB

Download
memory/1848-57-0x0000000000340000-0x000000000034C000-memory.dmp

Filesize
48KB

Download
memory/1848-56-0x0000000000320000-0x0000000000338000-memory.dmp

Filesize
96KB

Download
memory/1848-54-0x0000000000D60000-0x0000000000E6E000-memory.dmp

Filesize
1.1MB

Download
memory/1848-55-0x0000000076091000-0x0000000076093000-memory.dmp

Filesize
8KB

Download

Analysis

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