blustealer | 950cd4516e6bff899e1c4b28bda9867aa713e6818b28f36c7a613fcfeda6a53e

Analysis

max time kernel
151s
max time network
137s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
05-04-2023 15:52

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General

Target

950cd4516e6bff899e1c4b28bda9867aa713e6818b28f36c7a613fcfeda6a53e.exe
Size

446KB
MD5

96fe8d6e260227c0c4f6ed082a59212b
SHA1

031b0930a59444204a672a99423a97bd7e02f83c
SHA256

950cd4516e6bff899e1c4b28bda9867aa713e6818b28f36c7a613fcfeda6a53e
SHA512

bad0737c0b73a001a434c77afc0b9ddf64f81a7c7010cf36f88579d7851905110245ac06f1dc1615ca5af986fd1882f9dc27d0cc4bc766380110e6933dcfd360
SSDEEP

12288:fWnxfgsRL4u/1AlLK6FRY2n8OPKxGvYmBC:YxgsRftD0C2nKGs

Score

10^/10

blustealer collection spyware stealer

Malware Config

Extracted

Family

blustealer

https://api.telegram.org/bot5813496253:AAF4hamIx4-mNmFF1DwsqdJ4F9vUBmFqLo/sendMessage?chat_id=1105271645

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-1-5-21-1675742406-747946869-1029867430-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials in Files
T1081

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4112 set thread context of 1552	4112	950cd4516e6bff899e1c4b28bda9867aa713e6818b28f36c7a613fcfeda6a53e.exe	88

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

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4112	950cd4516e6bff899e1c4b28bda9867aa713e6818b28f36c7a613fcfeda6a53e.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 4112 wrote to memory of 1552	4112	950cd4516e6bff899e1c4b28bda9867aa713e6818b28f36c7a613fcfeda6a53e.exe	88
PID 4112 wrote to memory of 1552	4112	950cd4516e6bff899e1c4b28bda9867aa713e6818b28f36c7a613fcfeda6a53e.exe	88
PID 4112 wrote to memory of 1552	4112	950cd4516e6bff899e1c4b28bda9867aa713e6818b28f36c7a613fcfeda6a53e.exe	88
PID 4112 wrote to memory of 1552	4112	950cd4516e6bff899e1c4b28bda9867aa713e6818b28f36c7a613fcfeda6a53e.exe	88
PID 4112 wrote to memory of 1552	4112	950cd4516e6bff899e1c4b28bda9867aa713e6818b28f36c7a613fcfeda6a53e.exe	88

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\950cd4516e6bff899e1c4b28bda9867aa713e6818b28f36c7a613fcfeda6a53e.exe
"C:\Users\Admin\AppData\Local\Temp\950cd4516e6bff899e1c4b28bda9867aa713e6818b28f36c7a613fcfeda6a53e.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4112
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
  C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
  2⤵
  - Accesses Microsoft Outlook profiles
  - outlook_office_path
  - outlook_win_path
  PID:1552

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

T1081

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Email Collection

T1114

Command and Control

Exfiltration

Impact

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Downloads

memory/1552-136-0x0000000000530000-0x0000000000596000-memory.dmp

Filesize
408KB

Download
memory/1552-137-0x0000000004D20000-0x0000000004DBC000-memory.dmp

Filesize
624KB

Download
memory/4112-135-0x0000000000400000-0x0000000000471A1C-memory.dmp

Filesize
454KB

Download
memory/4112-148-0x0000000000400000-0x0000000000471A1C-memory.dmp

Filesize
454KB

Download