blustealer | 9ee2d324d8076b2b924ebdfbc678165a46089b8e413b292da28f6e9724e657a2

Analysis

max time kernel
151s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
18/10/2022, 11:17

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
DEKONT_P.EXE.exe
Size 1.3MB
Sample221018-ndp2ssfef5
SHA256 9ee2d324d8076b2b924ebdfbc678165a46089b8e413b292da28f6e9724e657a2
MD5 5afe8e13c85ca1b13566776bf95c8307
SHA1 0c4f45714b140392797f1d8aad65da71a0ef9aaf
SHA512 01310091d805126b39a87871202e82703d0e1a5202e90bed3fcf1af93a04dd73e9752cf72a42b7697cd2d6f09192214994cfb74dc5390ebd2125914c235777ae
SSDEEP 24576:3QxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxNussoiCZXqP:Ap6wgt6tM2QU2p2KwFdj
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

blustealer collection stealer

Malware Config

Extracted

Family

blustealer

https://api.telegram.org/bot5310184325:AAFI3fSQ6VcGu_NSTmv7d-qK2WCVhYY_qfg/sendMessage?chat_id=1293496579

Signatures

BluStealer
A Modular information stealer written in Visual Basic.
stealer blustealer

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	DEKONT_P.EXE.exe

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\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
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

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4392 set thread context of 3380	4392	DEKONT_P.EXE.exe	95
PID 3380 set thread context of 800	3380	DEKONT_P.EXE.exe	96

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

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task

T1053

pid	Process
2920	schtasks.exe

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 behavior: EnumeratesProcesses 4 IoCs

pid	Process
4392	DEKONT_P.EXE.exe
4712	powershell.exe
4392	DEKONT_P.EXE.exe
4712	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4392	DEKONT_P.EXE.exe
Token: SeDebugPrivilege	4712	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3380	DEKONT_P.EXE.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 4392 wrote to memory of 4712	4392	DEKONT_P.EXE.exe	91
PID 4392 wrote to memory of 4712	4392	DEKONT_P.EXE.exe	91
PID 4392 wrote to memory of 4712	4392	DEKONT_P.EXE.exe	91
PID 4392 wrote to memory of 2920	4392	DEKONT_P.EXE.exe	93
PID 4392 wrote to memory of 2920	4392	DEKONT_P.EXE.exe	93
PID 4392 wrote to memory of 2920	4392	DEKONT_P.EXE.exe	93
PID 4392 wrote to memory of 3380	4392	DEKONT_P.EXE.exe	95
PID 4392 wrote to memory of 3380	4392	DEKONT_P.EXE.exe	95
PID 4392 wrote to memory of 3380	4392	DEKONT_P.EXE.exe	95
PID 4392 wrote to memory of 3380	4392	DEKONT_P.EXE.exe	95
PID 4392 wrote to memory of 3380	4392	DEKONT_P.EXE.exe	95
PID 4392 wrote to memory of 3380	4392	DEKONT_P.EXE.exe	95
PID 4392 wrote to memory of 3380	4392	DEKONT_P.EXE.exe	95
PID 4392 wrote to memory of 3380	4392	DEKONT_P.EXE.exe	95
PID 3380 wrote to memory of 800	3380	DEKONT_P.EXE.exe	96
PID 3380 wrote to memory of 800	3380	DEKONT_P.EXE.exe	96
PID 3380 wrote to memory of 800	3380	DEKONT_P.EXE.exe	96
PID 3380 wrote to memory of 800	3380	DEKONT_P.EXE.exe	96
PID 3380 wrote to memory of 800	3380	DEKONT_P.EXE.exe	96

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\DEKONT_P.EXE.exe
"C:\Users\Admin\AppData\Local\Temp\DEKONT_P.EXE.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4392
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\qjvRlQWpOmZ.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4712
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\qjvRlQWpOmZ" /XML "C:\Users\Admin\AppData\Local\Temp\tmp3DB5.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:2920
- C:\Users\Admin\AppData\Local\Temp\DEKONT_P.EXE.exe
  "C:\Users\Admin\AppData\Local\Temp\DEKONT_P.EXE.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3380
- - 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:800

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Email Collection

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

tmp3DB5.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmp3DB5.tmp
Size 1KB
SHA256 d099bfc14290db8b2dcad25df29ca57db6921b7373f625d97ee972b671af42a5
MD5 beb34a84d793d917db9b8fa690c4a040
SHA1 63bef1f706c7714c13215757589dd634292084fe
SHA512 a1f8572367a27a96ad829da47d78d5408625b84f021c7815096582d26d5d1326d6d7f6827f0263bcb95986a2dee32139459e1e8dad379740e45e8ef8bdcbfc5f
MD5 SHA1 SHA512

Submit Download

memory/800-158-0x0000000000F50000-0x0000000000FB6000-memory.dmp

Download

memory/3380-147-0x0000000000400000-0x000000000046E000-memory.dmp

Download

memory/3380-164-0x0000000000400000-0x000000000046E000-memory.dmp

Download

memory/3380-144-0x0000000000400000-0x000000000046E000-memory.dmp

Download

memory/4392-133-0x0000000005B30000-0x00000000060D4000-memory.dmp

Download

memory/4392-132-0x00000000009F0000-0x0000000000B3C000-memory.dmp

Download

memory/4392-137-0x000000000C420000-0x000000000C486000-memory.dmp

Download

memory/4392-134-0x0000000005580000-0x0000000005612000-memory.dmp

Download

memory/4392-136-0x000000000C160000-0x000000000C1FC000-memory.dmp

Download

memory/4392-135-0x00000000054E0000-0x00000000054EA000-memory.dmp

Download

memory/4712-154-0x0000000006820000-0x000000000683E000-memory.dmp

Download

memory/4712-156-0x0000000007580000-0x000000000759A000-memory.dmp

Download

memory/4712-151-0x0000000006280000-0x000000000629E000-memory.dmp

Download

memory/4712-152-0x0000000006840000-0x0000000006872000-memory.dmp

Download

memory/4712-153-0x0000000071390000-0x00000000713DC000-memory.dmp

Download

memory/4712-146-0x00000000053B0000-0x00000000053D2000-memory.dmp

Download

memory/4712-155-0x0000000007BC0000-0x000000000823A000-memory.dmp

Download

memory/4712-149-0x0000000005BB0000-0x0000000005C16000-memory.dmp

Download

memory/4712-140-0x0000000002980000-0x00000000029B6000-memory.dmp

Download

memory/4712-142-0x0000000005410000-0x0000000005A38000-memory.dmp

Download

memory/4712-159-0x00000000075F0000-0x00000000075FA000-memory.dmp

Download

memory/4712-160-0x0000000007800000-0x0000000007896000-memory.dmp

Download

memory/4712-161-0x00000000077B0000-0x00000000077BE000-memory.dmp

Download

memory/4712-162-0x00000000078C0000-0x00000000078DA000-memory.dmp

Download

memory/4712-163-0x00000000078A0000-0x00000000078A8000-memory.dmp

Download