blustealer | dbf75a247c2141d83e39f08a304bfde553e4e1553bb0524721bd4c8b189ebb02

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
09-05-2023 08:10

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General

Target

Quote 1345 rev.7.exe
Size

873KB
MD5

976a912fe44d3b31ef181277129b3ca3
SHA1

b5ec4fd353c3c19a9e46dcc22440b7ca8bd8994e
SHA256

dbf75a247c2141d83e39f08a304bfde553e4e1553bb0524721bd4c8b189ebb02
SHA512

1ca27d071b68b912aebf865029ad3e872a94f6c1049556b58efdca1f103be2c1cb61592ebf86587b462e4a9a36ecbfbfef9502b9fca65070f5df4955c22910c9
SSDEEP

12288:yNj5Aybdjn4Ld+qGrm7UweTXyBFNSzXWwzkUMxNf3o6N9gp59CG5d2f3x2:y37UhxGq7Re4rSyamf4cITCG9

Score

10^/10

blustealer collection stealer

Malware Config

Extracted

Family

blustealer

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 4560 set thread context of 4080	4560	Quote 1345 rev.7.exe	90
PID 4080 set thread context of 624	4080	Quote 1345 rev.7.exe	91

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

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4080	Quote 1345 rev.7.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 4560 wrote to memory of 4080	4560	Quote 1345 rev.7.exe	90
PID 4560 wrote to memory of 4080	4560	Quote 1345 rev.7.exe	90
PID 4560 wrote to memory of 4080	4560	Quote 1345 rev.7.exe	90
PID 4560 wrote to memory of 4080	4560	Quote 1345 rev.7.exe	90
PID 4560 wrote to memory of 4080	4560	Quote 1345 rev.7.exe	90
PID 4560 wrote to memory of 4080	4560	Quote 1345 rev.7.exe	90
PID 4560 wrote to memory of 4080	4560	Quote 1345 rev.7.exe	90
PID 4560 wrote to memory of 4080	4560	Quote 1345 rev.7.exe	90
PID 4080 wrote to memory of 624	4080	Quote 1345 rev.7.exe	91
PID 4080 wrote to memory of 624	4080	Quote 1345 rev.7.exe	91
PID 4080 wrote to memory of 624	4080	Quote 1345 rev.7.exe	91
PID 4080 wrote to memory of 624	4080	Quote 1345 rev.7.exe	91
PID 4080 wrote to memory of 624	4080	Quote 1345 rev.7.exe	91

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\Quote 1345 rev.7.exe
"C:\Users\Admin\AppData\Local\Temp\Quote 1345 rev.7.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4560
- C:\Users\Admin\AppData\Local\Temp\Quote 1345 rev.7.exe
  "C:\Users\Admin\AppData\Local\Temp\Quote 1345 rev.7.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4080
- - 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:624

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Email Collection

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/624-147-0x00000000013A0000-0x0000000001406000-memory.dmp

Filesize
408KB

Download
memory/4080-140-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/4080-143-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/4080-146-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/4080-158-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/4560-133-0x0000000000EB0000-0x0000000000F90000-memory.dmp

Filesize
896KB

Download
memory/4560-134-0x0000000005FB0000-0x0000000006554000-memory.dmp

Filesize
5.6MB

Download
memory/4560-135-0x0000000005930000-0x00000000059C2000-memory.dmp

Filesize
584KB

Download
memory/4560-136-0x0000000005E30000-0x0000000005E3A000-memory.dmp

Filesize
40KB

Download
memory/4560-137-0x00000000058E0000-0x00000000058F0000-memory.dmp

Filesize
64KB

Download
memory/4560-138-0x00000000058E0000-0x00000000058F0000-memory.dmp

Filesize
64KB

Download
memory/4560-139-0x0000000008EA0000-0x0000000008F3C000-memory.dmp

Filesize
624KB

Download