blustealer | 3c4bb89b988346aaae821e6b5ca65572da9e265bf00dfa5d0df0870634711545

General

Target

RFQ-06062023.exe
Size

994KB
MD5

9c8ebe5eb36367cf02012d0664b97202
SHA1

e1fdfe7d35e0241eb17e501dce0586f37bef4ac7
SHA256

3c4bb89b988346aaae821e6b5ca65572da9e265bf00dfa5d0df0870634711545
SHA512

2ab235608c6e5d97dcd995a4700b99ba863a47674fe34d4981d469a32ad99d085fdaa72a0eed068f8cce79049ec1f24f93d16de0eb068b7a845c6866d482cf0a
SSDEEP

24576:E/thewlqB6pq4ptiyuo0urd0XAa23zgS4mU3yUt7T6O+uw+:se2q8pFpt91yf6U3D7TX+

Score

10^/10

blustealer collection stealer

Malware Config

Extracted

Family

blustealer

C2

https://api.telegram.org/bot5797428905:AAGaRRXGZN1d9GGFd3sE5x4uSpCGF0PU4m4/sendMessage?chat_id=1251788325

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-1-5-21-1283023626-844874658-3193756055-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2024 set thread context of 1492	2024	RFQ-06062023.exe	28
PID 1492 set thread context of 872	1492	RFQ-06062023.exe	29

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2024	RFQ-06062023.exe
2024	RFQ-06062023.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2024	RFQ-06062023.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1492	RFQ-06062023.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 2024 wrote to memory of 1492	2024	RFQ-06062023.exe	28
PID 2024 wrote to memory of 1492	2024	RFQ-06062023.exe	28
PID 2024 wrote to memory of 1492	2024	RFQ-06062023.exe	28
PID 2024 wrote to memory of 1492	2024	RFQ-06062023.exe	28
PID 2024 wrote to memory of 1492	2024	RFQ-06062023.exe	28
PID 2024 wrote to memory of 1492	2024	RFQ-06062023.exe	28
PID 2024 wrote to memory of 1492	2024	RFQ-06062023.exe	28
PID 2024 wrote to memory of 1492	2024	RFQ-06062023.exe	28
PID 2024 wrote to memory of 1492	2024	RFQ-06062023.exe	28
PID 1492 wrote to memory of 872	1492	RFQ-06062023.exe	29
PID 1492 wrote to memory of 872	1492	RFQ-06062023.exe	29
PID 1492 wrote to memory of 872	1492	RFQ-06062023.exe	29
PID 1492 wrote to memory of 872	1492	RFQ-06062023.exe	29
PID 1492 wrote to memory of 872	1492	RFQ-06062023.exe	29
PID 1492 wrote to memory of 872	1492	RFQ-06062023.exe	29
PID 1492 wrote to memory of 872	1492	RFQ-06062023.exe	29
PID 1492 wrote to memory of 872	1492	RFQ-06062023.exe	29
PID 1492 wrote to memory of 872	1492	RFQ-06062023.exe	29

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\RFQ-06062023.exe
"C:\Users\Admin\AppData\Local\Temp\RFQ-06062023.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2024
- C:\Users\Admin\AppData\Local\Temp\RFQ-06062023.exe
  "C:\Users\Admin\AppData\Local\Temp\RFQ-06062023.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1492
- - 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:872

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/872-72-0x00000000000D0000-0x0000000000136000-memory.dmp

Filesize
408KB

Download
memory/872-79-0x0000000000BE0000-0x0000000000C9C000-memory.dmp

Filesize
752KB

Download
memory/872-78-0x00000000000D0000-0x0000000000136000-memory.dmp

Filesize
408KB

Download
memory/872-76-0x00000000000D0000-0x0000000000136000-memory.dmp

Filesize
408KB

Download
memory/872-74-0x00000000000D0000-0x0000000000136000-memory.dmp

Filesize
408KB

Download
memory/872-73-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/1492-65-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1492-80-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1492-62-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1492-63-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1492-61-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1492-66-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1492-68-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1492-71-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2024-54-0x00000000001B0000-0x00000000002AE000-memory.dmp

Filesize
1016KB

Download
memory/2024-59-0x0000000008180000-0x000000000822C000-memory.dmp

Filesize
688KB

Download
memory/2024-58-0x00000000005F0000-0x00000000005FC000-memory.dmp

Filesize
48KB

Download
memory/2024-57-0x0000000005080000-0x00000000050C0000-memory.dmp

Filesize
256KB

Download
memory/2024-56-0x0000000000560000-0x0000000000572000-memory.dmp

Filesize
72KB

Download
memory/2024-55-0x0000000005080000-0x00000000050C0000-memory.dmp

Filesize
256KB

Download
memory/2024-60-0x0000000004B00000-0x0000000004B78000-memory.dmp

Filesize
480KB

Download

Analysis

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