blustealer | 5923a0d6ac3cd029ce06706021aaaff83c55193a23c2d5fedd5b3cdd0065b081

General

Target

Request for Quotation.exe
Size

890KB
MD5

e0236718f5d4d70c2dc485d322834897
SHA1

f0276ffdd801d3440918269f5d880f0502bda55e
SHA256

5923a0d6ac3cd029ce06706021aaaff83c55193a23c2d5fedd5b3cdd0065b081
SHA512

a7fae05a2aeb61acac13e682dcbff7bd000ecbb0ebc1350a62e528bc6abffe94db1e0cc0b71fa0b6cb90479e666b71dfa7406b8aeddff0bd9490d556a2fdc553
SSDEEP

24576:b4QWOM4PEXi53mZbPovZuFeBwEtumDDd+c6UcqK:b4QWV4Eq3mavEeBwEtfZ+cfcn

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-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\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 1536 set thread context of 1988	1536	Request for Quotation.exe	89
PID 1988 set thread context of 3344	1988	Request for Quotation.exe	90

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

System Information Discovery
T1082

Script User-Agent 1 IoCs

Uses user-agent string associated with script host/environment.

description	flow	ioc
HTTP User-Agent header	53	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1988	Request for Quotation.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 1536 wrote to memory of 1988	1536	Request for Quotation.exe	89
PID 1536 wrote to memory of 1988	1536	Request for Quotation.exe	89
PID 1536 wrote to memory of 1988	1536	Request for Quotation.exe	89
PID 1536 wrote to memory of 1988	1536	Request for Quotation.exe	89
PID 1536 wrote to memory of 1988	1536	Request for Quotation.exe	89
PID 1536 wrote to memory of 1988	1536	Request for Quotation.exe	89
PID 1536 wrote to memory of 1988	1536	Request for Quotation.exe	89
PID 1536 wrote to memory of 1988	1536	Request for Quotation.exe	89
PID 1988 wrote to memory of 3344	1988	Request for Quotation.exe	90
PID 1988 wrote to memory of 3344	1988	Request for Quotation.exe	90
PID 1988 wrote to memory of 3344	1988	Request for Quotation.exe	90
PID 1988 wrote to memory of 3344	1988	Request for Quotation.exe	90
PID 1988 wrote to memory of 3344	1988	Request for Quotation.exe	90

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\Request for Quotation.exe
"C:\Users\Admin\AppData\Local\Temp\Request for Quotation.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1536
- C:\Users\Admin\AppData\Local\Temp\Request for Quotation.exe
  "C:\Users\Admin\AppData\Local\Temp\Request for Quotation.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1988
- - 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:3344

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/1536-139-0x0000000008780000-0x000000000881C000-memory.dmp

Filesize
624KB

Download
memory/1536-134-0x0000000005C30000-0x0000000005C40000-memory.dmp

Filesize
64KB

Download
memory/1536-135-0x00000000061F0000-0x0000000006794000-memory.dmp

Filesize
5.6MB

Download
memory/1536-136-0x0000000005B60000-0x0000000005BF2000-memory.dmp

Filesize
584KB

Download
memory/1536-137-0x0000000005C30000-0x0000000005C40000-memory.dmp

Filesize
64KB

Download
memory/1536-138-0x0000000005C30000-0x0000000005C40000-memory.dmp

Filesize
64KB

Download
memory/1536-133-0x0000000000F20000-0x0000000001006000-memory.dmp

Filesize
920KB

Download
memory/1988-140-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1988-143-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1988-146-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1988-150-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/3344-147-0x0000000000A30000-0x0000000000A96000-memory.dmp

Filesize
408KB

Download
memory/3344-148-0x0000000005070000-0x0000000005080000-memory.dmp

Filesize
64KB

Download

Analysis

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