blustealer | d794c27fbcf5de096750f2be32587d19cab1364b6fdd86318685574dedeb5af4

General

Target

d794c27fbcf5de096750f2be32587d19cab1364b6fdd86318685574dedeb5af4.exe
Size

1.2MB
MD5

db8113681e395345f71223c1d18e40c4
SHA1

617ab388348ce4fa1bd203caa5558e570467db11
SHA256

d794c27fbcf5de096750f2be32587d19cab1364b6fdd86318685574dedeb5af4
SHA512

70302b571a40585a2776b8686fc9ac507456a317d1ab22dd6c43eba028d15ce2bef9bde0bf694d007869cb474c78b2706fc203f3608816819e9034ef76465b92
SSDEEP

24576:JxqZRqOIRqOMub30RfQVipC2mdQSDGSDFBi/txagaLNAJ4iTiwAAgEEY4:J3z0aiplJSDji1xawiiTQp

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-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\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 428 set thread context of 5068	428	d794c27fbcf5de096750f2be32587d19cab1364b6fdd86318685574dedeb5af4.exe	89
PID 5068 set thread context of 1656	5068	d794c27fbcf5de096750f2be32587d19cab1364b6fdd86318685574dedeb5af4.exe	90

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

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	45	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
428	d794c27fbcf5de096750f2be32587d19cab1364b6fdd86318685574dedeb5af4.exe
428	d794c27fbcf5de096750f2be32587d19cab1364b6fdd86318685574dedeb5af4.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	428	d794c27fbcf5de096750f2be32587d19cab1364b6fdd86318685574dedeb5af4.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
5068	d794c27fbcf5de096750f2be32587d19cab1364b6fdd86318685574dedeb5af4.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 428 wrote to memory of 4936	428	d794c27fbcf5de096750f2be32587d19cab1364b6fdd86318685574dedeb5af4.exe	88
PID 428 wrote to memory of 4936	428	d794c27fbcf5de096750f2be32587d19cab1364b6fdd86318685574dedeb5af4.exe	88
PID 428 wrote to memory of 4936	428	d794c27fbcf5de096750f2be32587d19cab1364b6fdd86318685574dedeb5af4.exe	88
PID 428 wrote to memory of 5068	428	d794c27fbcf5de096750f2be32587d19cab1364b6fdd86318685574dedeb5af4.exe	89
PID 428 wrote to memory of 5068	428	d794c27fbcf5de096750f2be32587d19cab1364b6fdd86318685574dedeb5af4.exe	89
PID 428 wrote to memory of 5068	428	d794c27fbcf5de096750f2be32587d19cab1364b6fdd86318685574dedeb5af4.exe	89
PID 428 wrote to memory of 5068	428	d794c27fbcf5de096750f2be32587d19cab1364b6fdd86318685574dedeb5af4.exe	89
PID 428 wrote to memory of 5068	428	d794c27fbcf5de096750f2be32587d19cab1364b6fdd86318685574dedeb5af4.exe	89
PID 428 wrote to memory of 5068	428	d794c27fbcf5de096750f2be32587d19cab1364b6fdd86318685574dedeb5af4.exe	89
PID 428 wrote to memory of 5068	428	d794c27fbcf5de096750f2be32587d19cab1364b6fdd86318685574dedeb5af4.exe	89
PID 428 wrote to memory of 5068	428	d794c27fbcf5de096750f2be32587d19cab1364b6fdd86318685574dedeb5af4.exe	89
PID 5068 wrote to memory of 1656	5068	d794c27fbcf5de096750f2be32587d19cab1364b6fdd86318685574dedeb5af4.exe	90
PID 5068 wrote to memory of 1656	5068	d794c27fbcf5de096750f2be32587d19cab1364b6fdd86318685574dedeb5af4.exe	90
PID 5068 wrote to memory of 1656	5068	d794c27fbcf5de096750f2be32587d19cab1364b6fdd86318685574dedeb5af4.exe	90
PID 5068 wrote to memory of 1656	5068	d794c27fbcf5de096750f2be32587d19cab1364b6fdd86318685574dedeb5af4.exe	90
PID 5068 wrote to memory of 1656	5068	d794c27fbcf5de096750f2be32587d19cab1364b6fdd86318685574dedeb5af4.exe	90

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\d794c27fbcf5de096750f2be32587d19cab1364b6fdd86318685574dedeb5af4.exe
"C:\Users\Admin\AppData\Local\Temp\d794c27fbcf5de096750f2be32587d19cab1364b6fdd86318685574dedeb5af4.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:428
- C:\Users\Admin\AppData\Local\Temp\d794c27fbcf5de096750f2be32587d19cab1364b6fdd86318685574dedeb5af4.exe
  "C:\Users\Admin\AppData\Local\Temp\d794c27fbcf5de096750f2be32587d19cab1364b6fdd86318685574dedeb5af4.exe"
  2⤵
  PID:4936
- C:\Users\Admin\AppData\Local\Temp\d794c27fbcf5de096750f2be32587d19cab1364b6fdd86318685574dedeb5af4.exe
  "C:\Users\Admin\AppData\Local\Temp\d794c27fbcf5de096750f2be32587d19cab1364b6fdd86318685574dedeb5af4.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:5068
- - 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:1656

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

Loading Replay Monitor...

Downloads

memory/428-132-0x0000000000430000-0x0000000000572000-memory.dmp

Filesize
1.3MB

Download
memory/428-133-0x0000000005560000-0x0000000005B04000-memory.dmp

Filesize
5.6MB

Download
memory/428-134-0x0000000004FB0000-0x0000000005042000-memory.dmp

Filesize
584KB

Download
memory/428-135-0x0000000004F10000-0x0000000004F1A000-memory.dmp

Filesize
40KB

Download
memory/428-136-0x0000000008DB0000-0x0000000008E4C000-memory.dmp

Filesize
624KB

Download
memory/1656-146-0x0000000000F30000-0x0000000000F96000-memory.dmp

Filesize
408KB

Download
memory/5068-139-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/5068-141-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/5068-144-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download

Analysis

Sharing