blustealer | aaf048e30d5f843407f59bff320b992295396dc39dfb7bc6ca1c71f80897fecd

General

Target

quotation.exe
Size

1.2MB
MD5

6fd07cc698f01a40f0c23346c6a95157
SHA1

2850203b7057b478cb3ee30544c558bfec6bc747
SHA256

aaf048e30d5f843407f59bff320b992295396dc39dfb7bc6ca1c71f80897fecd
SHA512

01d93603c60659ee9b661d7f5f79fb38c0ea15e92fd71c609669d11e4f0a6b4a968996631f9bacc6d8cb963e63e963196914602609ded7587d5e9238baf0b798
SSDEEP

24576:bZ5cGp8NLce7efKxdX+M6mKx7+FTUQ4Tk2iXY+mzo3bv:l5cGp8NLceIKzuMZKx7+tUQ4I2slmzM

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-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 536 set thread context of 2012	536	quotation.exe	27
PID 2012 set thread context of 888	2012	quotation.exe	28

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
2012	quotation.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 536 wrote to memory of 2012	536	quotation.exe	27
PID 536 wrote to memory of 2012	536	quotation.exe	27
PID 536 wrote to memory of 2012	536	quotation.exe	27
PID 536 wrote to memory of 2012	536	quotation.exe	27
PID 536 wrote to memory of 2012	536	quotation.exe	27
PID 536 wrote to memory of 2012	536	quotation.exe	27
PID 536 wrote to memory of 2012	536	quotation.exe	27
PID 536 wrote to memory of 2012	536	quotation.exe	27
PID 536 wrote to memory of 2012	536	quotation.exe	27
PID 2012 wrote to memory of 888	2012	quotation.exe	28
PID 2012 wrote to memory of 888	2012	quotation.exe	28
PID 2012 wrote to memory of 888	2012	quotation.exe	28
PID 2012 wrote to memory of 888	2012	quotation.exe	28
PID 2012 wrote to memory of 888	2012	quotation.exe	28
PID 2012 wrote to memory of 888	2012	quotation.exe	28
PID 2012 wrote to memory of 888	2012	quotation.exe	28
PID 2012 wrote to memory of 888	2012	quotation.exe	28
PID 2012 wrote to memory of 888	2012	quotation.exe	28

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\quotation.exe
"C:\Users\Admin\AppData\Local\Temp\quotation.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:536
- C:\Users\Admin\AppData\Local\Temp\quotation.exe
  "C:\Users\Admin\AppData\Local\Temp\quotation.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2012
- - 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:888

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/536-54-0x0000000000BF0000-0x0000000000D26000-memory.dmp

Filesize
1.2MB

Download
memory/536-55-0x0000000076831000-0x0000000076833000-memory.dmp

Filesize
8KB

Download
memory/536-56-0x0000000000660000-0x0000000000678000-memory.dmp

Filesize
96KB

Download
memory/536-57-0x0000000000680000-0x000000000068C000-memory.dmp

Filesize
48KB

Download
memory/536-58-0x0000000007FB0000-0x000000000807A000-memory.dmp

Filesize
808KB

Download
memory/536-59-0x0000000005170000-0x00000000051E4000-memory.dmp

Filesize
464KB

Download
memory/888-72-0x0000000000240000-0x00000000002A6000-memory.dmp

Filesize
408KB

Download
memory/888-82-0x0000000004850000-0x000000000490C000-memory.dmp

Filesize
752KB

Download
memory/888-80-0x0000000000240000-0x00000000002A6000-memory.dmp

Filesize
408KB

Download
memory/888-78-0x0000000000240000-0x00000000002A6000-memory.dmp

Filesize
408KB

Download
memory/888-75-0x0000000000240000-0x00000000002A6000-memory.dmp

Filesize
408KB

Download
memory/2012-74-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2012-68-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2012-60-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2012-61-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2012-65-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2012-63-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2012-83-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download

Analysis

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