blustealer | 781a83f3ac8bb7d765db4ad32fcd1e07e585c533f300ddc847ea93d420c6d64c

General

Target

Details & Invoices.exe
Size

1.1MB
MD5

6518419b9de76da716fb64120d84efb2
SHA1

36c349c1d03b67c799d8b96bc76d9fea40f25e1f
SHA256

781a83f3ac8bb7d765db4ad32fcd1e07e585c533f300ddc847ea93d420c6d64c
SHA512

4da469d1051e44453c1575c76178dbff421a47e48694a35d1b15179307121333ffc45b5ec79a98eb70c3a7479224df9edf0eff50d0f2264c8c6f31df6b47b620
SSDEEP

24576:D1o9IkBL4tXTL5g7tFUBde4x9jBbke0fFkd7:D2IDLKBWO899bke0qd

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 1764 set thread context of 1500	1764	Details & Invoices.exe	29
PID 1500 set thread context of 1276	1500	Details & Invoices.exe	30

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1764	Details & Invoices.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1764	Details & Invoices.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1500	Details & Invoices.exe

Suspicious use of WriteProcessMemory 22 IoCs

description	pid	Process	procid_target
PID 1764 wrote to memory of 1996	1764	Details & Invoices.exe	28
PID 1764 wrote to memory of 1996	1764	Details & Invoices.exe	28
PID 1764 wrote to memory of 1996	1764	Details & Invoices.exe	28
PID 1764 wrote to memory of 1996	1764	Details & Invoices.exe	28
PID 1764 wrote to memory of 1500	1764	Details & Invoices.exe	29
PID 1764 wrote to memory of 1500	1764	Details & Invoices.exe	29
PID 1764 wrote to memory of 1500	1764	Details & Invoices.exe	29
PID 1764 wrote to memory of 1500	1764	Details & Invoices.exe	29
PID 1764 wrote to memory of 1500	1764	Details & Invoices.exe	29
PID 1764 wrote to memory of 1500	1764	Details & Invoices.exe	29
PID 1764 wrote to memory of 1500	1764	Details & Invoices.exe	29
PID 1764 wrote to memory of 1500	1764	Details & Invoices.exe	29
PID 1764 wrote to memory of 1500	1764	Details & Invoices.exe	29
PID 1500 wrote to memory of 1276	1500	Details & Invoices.exe	30
PID 1500 wrote to memory of 1276	1500	Details & Invoices.exe	30
PID 1500 wrote to memory of 1276	1500	Details & Invoices.exe	30
PID 1500 wrote to memory of 1276	1500	Details & Invoices.exe	30
PID 1500 wrote to memory of 1276	1500	Details & Invoices.exe	30
PID 1500 wrote to memory of 1276	1500	Details & Invoices.exe	30
PID 1500 wrote to memory of 1276	1500	Details & Invoices.exe	30
PID 1500 wrote to memory of 1276	1500	Details & Invoices.exe	30
PID 1500 wrote to memory of 1276	1500	Details & Invoices.exe	30

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\Details & Invoices.exe
"C:\Users\Admin\AppData\Local\Temp\Details & Invoices.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1764
- C:\Users\Admin\AppData\Local\Temp\Details & Invoices.exe
  "C:\Users\Admin\AppData\Local\Temp\Details & Invoices.exe"
  2⤵
  PID:1996
- C:\Users\Admin\AppData\Local\Temp\Details & Invoices.exe
  "C:\Users\Admin\AppData\Local\Temp\Details & Invoices.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1500
- - 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:1276

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/1276-73-0x00000000001E0000-0x0000000000246000-memory.dmp

Filesize
408KB

Download
memory/1276-82-0x00000000007C0000-0x000000000087C000-memory.dmp

Filesize
752KB

Download
memory/1276-80-0x00000000001E0000-0x0000000000246000-memory.dmp

Filesize
408KB

Download
memory/1276-78-0x00000000001E0000-0x0000000000246000-memory.dmp

Filesize
408KB

Download
memory/1276-75-0x00000000001E0000-0x0000000000246000-memory.dmp

Filesize
408KB

Download
memory/1500-83-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1500-63-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1500-65-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1500-61-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1500-68-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1500-72-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1500-60-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1764-54-0x0000000000980000-0x0000000000A9E000-memory.dmp

Filesize
1.1MB

Download
memory/1764-58-0x000000000A660000-0x000000000A72A000-memory.dmp

Filesize
808KB

Download
memory/1764-57-0x0000000000510000-0x000000000051C000-memory.dmp

Filesize
48KB

Download
memory/1764-56-0x00000000004F0000-0x0000000000508000-memory.dmp

Filesize
96KB

Download
memory/1764-55-0x0000000075BA1000-0x0000000075BA3000-memory.dmp

Filesize
8KB

Download
memory/1764-59-0x0000000005B90000-0x0000000005C04000-memory.dmp

Filesize
464KB

Download

Analysis

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