blustealer | 579c3138028884421849a6d210996f27da317f22d228a98d9bd0704786090498

Analysis

max time kernel
148s
max time network
142s
platform
windows10-2004_x64
resource
win10v2004-20220721-en
resource tags

arch:x64arch:x86image:win10v2004-20220721-enlocale:en-usos:windows10-2004-x64system
submitted
02-08-2022 20:28

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General

Target

new order.exe
Size

1.1MB
MD5

2d475dbdfd7a378689d984a04677e641
SHA1

1a673fb62bb6e29fb3d9ef0d40e480cbad541879
SHA256

579c3138028884421849a6d210996f27da317f22d228a98d9bd0704786090498
SHA512

cf9e9014fc5b462ef5d2326c452d922b3c3b3f1317eed74b4620345fe8eeef15779abdf239d87a8c5dcb2e124c3d4214a0be8a06d43be3108e348091a7706fc5

Score

10^/10

blustealer collection stealer

Malware Config

Extracted

Family

blustealer

https://api.telegram.org/bot5330579892:AAHDIOXrD-d-pMU_JI4pPczBI962-9fokRs/sendMessage?chat_id=1494890429

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-1-5-21-2660308776-3705150086-26593515-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-2660308776-3705150086-26593515-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-2660308776-3705150086-26593515-1000\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 4116 set thread context of 1628	4116	new order.exe	103
PID 1628 set thread context of 1092	1628	new order.exe	105

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

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4116	new order.exe
4116	new order.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4116	new order.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1628	new order.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 4116 wrote to memory of 3524	4116	new order.exe	102
PID 4116 wrote to memory of 3524	4116	new order.exe	102
PID 4116 wrote to memory of 3524	4116	new order.exe	102
PID 4116 wrote to memory of 1628	4116	new order.exe	103
PID 4116 wrote to memory of 1628	4116	new order.exe	103
PID 4116 wrote to memory of 1628	4116	new order.exe	103
PID 4116 wrote to memory of 1628	4116	new order.exe	103
PID 4116 wrote to memory of 1628	4116	new order.exe	103
PID 4116 wrote to memory of 1628	4116	new order.exe	103
PID 4116 wrote to memory of 1628	4116	new order.exe	103
PID 4116 wrote to memory of 1628	4116	new order.exe	103
PID 1628 wrote to memory of 1092	1628	new order.exe	105
PID 1628 wrote to memory of 1092	1628	new order.exe	105
PID 1628 wrote to memory of 1092	1628	new order.exe	105
PID 1628 wrote to memory of 1092	1628	new order.exe	105
PID 1628 wrote to memory of 1092	1628	new order.exe	105

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2660308776-3705150086-26593515-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2660308776-3705150086-26593515-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\new order.exe
"C:\Users\Admin\AppData\Local\Temp\new order.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4116
- C:\Users\Admin\AppData\Local\Temp\new order.exe
  "C:\Users\Admin\AppData\Local\Temp\new order.exe"
  2⤵
  PID:3524
- C:\Users\Admin\AppData\Local\Temp\new order.exe
  "C:\Users\Admin\AppData\Local\Temp\new order.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1628
- - 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:1092

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

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Downloads

memory/1092-145-0x0000000000740000-0x00000000007A6000-memory.dmp

Filesize
408KB

Download
memory/1628-143-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/1628-140-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/1628-138-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/4116-130-0x0000000000650000-0x0000000000768000-memory.dmp

Filesize
1.1MB

Download
memory/4116-135-0x000000000A010000-0x000000000A076000-memory.dmp

Filesize
408KB

Download
memory/4116-134-0x0000000009F00000-0x0000000009F9C000-memory.dmp

Filesize
624KB

Download
memory/4116-133-0x0000000005740000-0x000000000574A000-memory.dmp

Filesize
40KB

Download
memory/4116-132-0x00000000052D0000-0x0000000005362000-memory.dmp

Filesize
584KB

Download
memory/4116-131-0x00000000057C0000-0x0000000005D64000-memory.dmp

Filesize
5.6MB

Download