blustealer | 6c7f745d0364ab5497cf5a57791ca3b2006c156c2053b00cf04e48976a77a1de

General

Target

Request for Quotation.exe
Size

1024KB
MD5

a1effb2cfe2a999d25a2f16a3271b0ec
SHA1

68752a3d1b5c2837829f4b1e9d59fa7529d4ed07
SHA256

45c0d4c42e3d98c94d5ae01270b7b0adfe3de2454520fa7b423f0fc9e2f49603
SHA512

6b335e536919c03b69d60aa645642e253cc12aee2ec9396585114870370f25b3ba5994742b6676c770528a718c3af1ceee086bac93d554b6d043dbd6639301a8
SSDEEP

24576:S9LaVUH999wbJG2Bzr7G9Fvqp8vYtY3aoT55ybAt:+BH9w1Havq6vYS34bA

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-1-5-21-1529757233-3489015626-3409890339-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\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 1636 set thread context of 4884	1636	Request for Quotation.exe	89
PID 4884 set thread context of 4608	4884	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	49	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1636	Request for Quotation.exe
1636	Request for Quotation.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1636	Request for Quotation.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4884	Request for Quotation.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 1636 wrote to memory of 4884	1636	Request for Quotation.exe	89
PID 1636 wrote to memory of 4884	1636	Request for Quotation.exe	89
PID 1636 wrote to memory of 4884	1636	Request for Quotation.exe	89
PID 1636 wrote to memory of 4884	1636	Request for Quotation.exe	89
PID 1636 wrote to memory of 4884	1636	Request for Quotation.exe	89
PID 1636 wrote to memory of 4884	1636	Request for Quotation.exe	89
PID 1636 wrote to memory of 4884	1636	Request for Quotation.exe	89
PID 1636 wrote to memory of 4884	1636	Request for Quotation.exe	89
PID 4884 wrote to memory of 4608	4884	Request for Quotation.exe	90
PID 4884 wrote to memory of 4608	4884	Request for Quotation.exe	90
PID 4884 wrote to memory of 4608	4884	Request for Quotation.exe	90
PID 4884 wrote to memory of 4608	4884	Request for Quotation.exe	90
PID 4884 wrote to memory of 4608	4884	Request for Quotation.exe	90

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\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 behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1636
- 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:4884
- - 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:4608

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/1636-139-0x00000000059F0000-0x0000000005A00000-memory.dmp

Filesize
64KB

Download
memory/1636-134-0x0000000005DC0000-0x0000000006364000-memory.dmp

Filesize
5.6MB

Download
memory/1636-135-0x00000000058B0000-0x0000000005942000-memory.dmp

Filesize
584KB

Download
memory/1636-136-0x0000000005950000-0x000000000595A000-memory.dmp

Filesize
40KB

Download
memory/1636-137-0x0000000005B90000-0x0000000005C2C000-memory.dmp

Filesize
624KB

Download
memory/1636-138-0x00000000059F0000-0x0000000005A00000-memory.dmp

Filesize
64KB

Download
memory/1636-133-0x0000000000DF0000-0x0000000000EF6000-memory.dmp

Filesize
1.0MB

Download
memory/4608-147-0x0000000000960000-0x00000000009C6000-memory.dmp

Filesize
408KB

Download
memory/4608-148-0x0000000004F40000-0x0000000004F50000-memory.dmp

Filesize
64KB

Download
memory/4884-140-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/4884-143-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/4884-146-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/4884-150-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download

Analysis

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