blustealer | 9ee2d324d8076b2b924ebdfbc678165a46089b8e413b292da28f6e9724e657a2

General

Target

DEKONT_P.EXE.exe
Size

1.3MB
MD5

5afe8e13c85ca1b13566776bf95c8307
SHA1

0c4f45714b140392797f1d8aad65da71a0ef9aaf
SHA256

9ee2d324d8076b2b924ebdfbc678165a46089b8e413b292da28f6e9724e657a2
SHA512

01310091d805126b39a87871202e82703d0e1a5202e90bed3fcf1af93a04dd73e9752cf72a42b7697cd2d6f09192214994cfb74dc5390ebd2125914c235777ae
SSDEEP

24576:3QxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxNussoiCZXqP:Ap6wgt6tM2QU2p2KwFdj

Score

10^/10

blustealer collection stealer

Malware Config

Extracted

Family

blustealer

C2

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

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Email Collection

1

T1114

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp3DB5.tmp

Filesize
1KB

MD5
beb34a84d793d917db9b8fa690c4a040

SHA1
63bef1f706c7714c13215757589dd634292084fe

SHA256
d099bfc14290db8b2dcad25df29ca57db6921b7373f625d97ee972b671af42a5

SHA512
a1f8572367a27a96ad829da47d78d5408625b84f021c7815096582d26d5d1326d6d7f6827f0263bcb95986a2dee32139459e1e8dad379740e45e8ef8bdcbfc5f

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

Filesize
408KB

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

Filesize
440KB

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

Filesize
440KB

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

Filesize
440KB

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

Filesize
5.6MB

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

Filesize
1.3MB

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

Filesize
408KB

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

Filesize
584KB

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

Filesize
624KB

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

Filesize
40KB

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

Filesize
120KB

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

Filesize
104KB

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

Filesize
120KB

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

Filesize
200KB

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

Filesize
304KB

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

Filesize
136KB

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

Filesize
6.5MB

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

Filesize
408KB

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

Filesize
216KB

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

Filesize
6.2MB

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

Filesize
40KB

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

Filesize
600KB

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

Filesize
56KB

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

Filesize
104KB

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

Filesize
32KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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