blustealer | b0b430c82cc574323d38d65365540472f3f0e6133dcb36e20ee9fcf5483769fa

General

Target

quote request.exe
Size

756KB
MD5

6d4c80ae0bcc986dbd7439993ae10e54
SHA1

67ca4066cd527edc67c4d690d49c1a5eacd8119d
SHA256

b0b430c82cc574323d38d65365540472f3f0e6133dcb36e20ee9fcf5483769fa
SHA512

1ee0c13ad0c2deadfeadbf0e1af97a495c765ada125074a4845ff38fdf569e3f814562137b133089370311b46f80a8508ebd6173e8aa33b59bbedd312eb189a4
SSDEEP

12288:0Hklt3dwkiuzina39XGzuBPBWFmH4G+oipT3yzf0VO3yfg98tUNGmOev:LZqCinc9XiulBWQH4Roipa0VO32QyadJ

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-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\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 3440 set thread context of 4888	3440	quote request.exe	83
PID 4888 set thread context of 1256	4888	quote request.exe	84

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 4 IoCs

pid	Process
3440	quote request.exe
3440	quote request.exe
3440	quote request.exe
3440	quote request.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3440	quote request.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4888	quote request.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 3440 wrote to memory of 4932	3440	quote request.exe	81
PID 3440 wrote to memory of 4932	3440	quote request.exe	81
PID 3440 wrote to memory of 4932	3440	quote request.exe	81
PID 3440 wrote to memory of 4848	3440	quote request.exe	82
PID 3440 wrote to memory of 4848	3440	quote request.exe	82
PID 3440 wrote to memory of 4848	3440	quote request.exe	82
PID 3440 wrote to memory of 4888	3440	quote request.exe	83
PID 3440 wrote to memory of 4888	3440	quote request.exe	83
PID 3440 wrote to memory of 4888	3440	quote request.exe	83
PID 3440 wrote to memory of 4888	3440	quote request.exe	83
PID 3440 wrote to memory of 4888	3440	quote request.exe	83
PID 3440 wrote to memory of 4888	3440	quote request.exe	83
PID 3440 wrote to memory of 4888	3440	quote request.exe	83
PID 3440 wrote to memory of 4888	3440	quote request.exe	83
PID 4888 wrote to memory of 1256	4888	quote request.exe	84
PID 4888 wrote to memory of 1256	4888	quote request.exe	84
PID 4888 wrote to memory of 1256	4888	quote request.exe	84
PID 4888 wrote to memory of 1256	4888	quote request.exe	84
PID 4888 wrote to memory of 1256	4888	quote request.exe	84

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\quote request.exe
"C:\Users\Admin\AppData\Local\Temp\quote request.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3440
- C:\Users\Admin\AppData\Local\Temp\quote request.exe
  "C:\Users\Admin\AppData\Local\Temp\quote request.exe"
  2⤵
  PID:4932
- C:\Users\Admin\AppData\Local\Temp\quote request.exe
  "C:\Users\Admin\AppData\Local\Temp\quote request.exe"
  2⤵
  PID:4848
- C:\Users\Admin\AppData\Local\Temp\quote request.exe
  "C:\Users\Admin\AppData\Local\Temp\quote request.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4888
- - 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:1256

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/1256-145-0x0000000000710000-0x0000000000776000-memory.dmp

Filesize
408KB

Download
memory/3440-132-0x00000000007E0000-0x00000000008A4000-memory.dmp

Filesize
784KB

Download
memory/3440-133-0x0000000005430000-0x00000000054C2000-memory.dmp

Filesize
584KB

Download
memory/3440-134-0x0000000005770000-0x000000000580C000-memory.dmp

Filesize
624KB

Download
memory/4888-138-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/4888-140-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/4888-143-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download

Analysis

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