blustealer | 16f18d5c839c1c24cdceb8bbc9f3adb8300cd16d585678597d0f30beecbce942

General

Target

P.O12537.exe
Size

1022KB
MD5

75dcd5e85ae9f8bcf9d95335efd83867
SHA1

8501172142aaa040e8effc06cf51a4beffd40683
SHA256

16f18d5c839c1c24cdceb8bbc9f3adb8300cd16d585678597d0f30beecbce942
SHA512

8a9958bdbb1cd42ad811146e024862ab42927285041400997e1aa59e77f91f4fbb0080a2992aa94ad4284f7e67d1fc8bcde91bc3caaf71ae1ee0a90c1169f448

Score

10^/10

blustealer collection stealer

Malware Config

Extracted

Family

blustealer

C2

https://api.telegram.org/bot5330579892:AAHDIOXrD-d-pMU_JI4pPczBI962-9fokRs/sendMessage?chat_id=1494890429

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-1-5-21-3440072777-2118400376-1759599358-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-3440072777-2118400376-1759599358-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-3440072777-2118400376-1759599358-1000\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 2012 set thread context of 1168	2012	P.O12537.exe	27
PID 1168 set thread context of 1744	1168	P.O12537.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
1168	P.O12537.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 2012 wrote to memory of 1168	2012	P.O12537.exe	27
PID 2012 wrote to memory of 1168	2012	P.O12537.exe	27
PID 2012 wrote to memory of 1168	2012	P.O12537.exe	27
PID 2012 wrote to memory of 1168	2012	P.O12537.exe	27
PID 2012 wrote to memory of 1168	2012	P.O12537.exe	27
PID 2012 wrote to memory of 1168	2012	P.O12537.exe	27
PID 2012 wrote to memory of 1168	2012	P.O12537.exe	27
PID 2012 wrote to memory of 1168	2012	P.O12537.exe	27
PID 2012 wrote to memory of 1168	2012	P.O12537.exe	27
PID 1168 wrote to memory of 1744	1168	P.O12537.exe	28
PID 1168 wrote to memory of 1744	1168	P.O12537.exe	28
PID 1168 wrote to memory of 1744	1168	P.O12537.exe	28
PID 1168 wrote to memory of 1744	1168	P.O12537.exe	28
PID 1168 wrote to memory of 1744	1168	P.O12537.exe	28
PID 1168 wrote to memory of 1744	1168	P.O12537.exe	28
PID 1168 wrote to memory of 1744	1168	P.O12537.exe	28
PID 1168 wrote to memory of 1744	1168	P.O12537.exe	28
PID 1168 wrote to memory of 1744	1168	P.O12537.exe	28

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3440072777-2118400376-1759599358-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3440072777-2118400376-1759599358-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\P.O12537.exe
"C:\Users\Admin\AppData\Local\Temp\P.O12537.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2012
- C:\Users\Admin\AppData\Local\Temp\P.O12537.exe
  "C:\Users\Admin\AppData\Local\Temp\P.O12537.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1168
- - 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:1744

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/1168-63-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/1168-84-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/1168-73-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/1168-69-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/1168-65-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/1168-60-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/1168-61-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/1744-76-0x00000000000D0000-0x0000000000136000-memory.dmp

Filesize
408KB

Download
memory/1744-74-0x00000000000D0000-0x0000000000136000-memory.dmp

Filesize
408KB

Download
memory/1744-81-0x00000000000D0000-0x0000000000136000-memory.dmp

Filesize
408KB

Download
memory/1744-79-0x00000000000D0000-0x0000000000136000-memory.dmp

Filesize
408KB

Download
memory/1744-83-0x0000000000B10000-0x0000000000BCC000-memory.dmp

Filesize
752KB

Download
memory/2012-59-0x0000000005940000-0x00000000059B8000-memory.dmp

Filesize
480KB

Download
memory/2012-58-0x0000000005DA0000-0x0000000005E62000-memory.dmp

Filesize
776KB

Download
memory/2012-68-0x0000000004E85000-0x0000000004E96000-memory.dmp

Filesize
68KB

Download
memory/2012-57-0x0000000000340000-0x000000000034A000-memory.dmp

Filesize
40KB

Download
memory/2012-56-0x00000000002A0000-0x00000000002B6000-memory.dmp

Filesize
88KB

Download
memory/2012-54-0x0000000000970000-0x0000000000A76000-memory.dmp

Filesize
1.0MB

Download
memory/2012-55-0x0000000075791000-0x0000000075793000-memory.dmp

Filesize
8KB

Download

Analysis

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