blustealer | 9ee2d324d8076b2b924ebdfbc678165a46089b8e413b292da28f6e9724e657a2

Analysis

max time kernel
88s
max time network
44s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
18/10/2022, 11:17

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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

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\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 1476 set thread context of 1764	1476	DEKONT_P.EXE.exe	31
PID 1764 set thread context of 1532	1764	DEKONT_P.EXE.exe	32

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
1748	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1476	DEKONT_P.EXE.exe
1476	DEKONT_P.EXE.exe
1784	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1476	DEKONT_P.EXE.exe
Token: SeDebugPrivilege	1784	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1764	DEKONT_P.EXE.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 1476 wrote to memory of 1784	1476	DEKONT_P.EXE.exe	27
PID 1476 wrote to memory of 1784	1476	DEKONT_P.EXE.exe	27
PID 1476 wrote to memory of 1784	1476	DEKONT_P.EXE.exe	27
PID 1476 wrote to memory of 1784	1476	DEKONT_P.EXE.exe	27
PID 1476 wrote to memory of 1748	1476	DEKONT_P.EXE.exe	29
PID 1476 wrote to memory of 1748	1476	DEKONT_P.EXE.exe	29
PID 1476 wrote to memory of 1748	1476	DEKONT_P.EXE.exe	29
PID 1476 wrote to memory of 1748	1476	DEKONT_P.EXE.exe	29
PID 1476 wrote to memory of 1764	1476	DEKONT_P.EXE.exe	31
PID 1476 wrote to memory of 1764	1476	DEKONT_P.EXE.exe	31
PID 1476 wrote to memory of 1764	1476	DEKONT_P.EXE.exe	31
PID 1476 wrote to memory of 1764	1476	DEKONT_P.EXE.exe	31
PID 1476 wrote to memory of 1764	1476	DEKONT_P.EXE.exe	31
PID 1476 wrote to memory of 1764	1476	DEKONT_P.EXE.exe	31
PID 1476 wrote to memory of 1764	1476	DEKONT_P.EXE.exe	31
PID 1476 wrote to memory of 1764	1476	DEKONT_P.EXE.exe	31
PID 1476 wrote to memory of 1764	1476	DEKONT_P.EXE.exe	31
PID 1764 wrote to memory of 1532	1764	DEKONT_P.EXE.exe	32
PID 1764 wrote to memory of 1532	1764	DEKONT_P.EXE.exe	32
PID 1764 wrote to memory of 1532	1764	DEKONT_P.EXE.exe	32
PID 1764 wrote to memory of 1532	1764	DEKONT_P.EXE.exe	32
PID 1764 wrote to memory of 1532	1764	DEKONT_P.EXE.exe	32
PID 1764 wrote to memory of 1532	1764	DEKONT_P.EXE.exe	32
PID 1764 wrote to memory of 1532	1764	DEKONT_P.EXE.exe	32
PID 1764 wrote to memory of 1532	1764	DEKONT_P.EXE.exe	32
PID 1764 wrote to memory of 1532	1764	DEKONT_P.EXE.exe	32

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\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⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1476
- 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:1784
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\qjvRlQWpOmZ" /XML "C:\Users\Admin\AppData\Local\Temp\tmp3515.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:1748
- 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:1764
- - 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:1532

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

System Information Discovery

T1082

Lateral Movement

Collection

Email Collection

T1114

Command and Control

Exfiltration

Impact

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Downloads

tmp3515.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmp3515.tmp
Size 1KB
SHA256 ff446e1744fdf8003a9d9cb7a5fd85048a7c7c2b34ebe23fffb0edfcb2f1c41a
MD5 74833f56e3f0cf7fd41e0fd10752aae5
SHA1 c424438210947871ea004f901b016ee9359c7b64
SHA512 d37099283fc254dcc8dd4236570fdc90e3e7ebec33825eb559c079af824c0a2d3de391edb017edd7e349de4884df5961e6360c2ed8d13eb137ccfe4699d51bed
MD5 SHA1 SHA512

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memory/1476-54-0x00000000008A0000-0x00000000009EC000-memory.dmp

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memory/1476-56-0x0000000001F80000-0x0000000001F98000-memory.dmp

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memory/1476-57-0x00000000005C0000-0x00000000005CC000-memory.dmp

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memory/1476-58-0x0000000007D90000-0x0000000007E5A000-memory.dmp

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memory/1476-55-0x0000000074C11000-0x0000000074C13000-memory.dmp

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memory/1476-63-0x000000000A550000-0x000000000A5C4000-memory.dmp

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memory/1532-87-0x0000000000EB0000-0x0000000000F6C000-memory.dmp

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memory/1532-78-0x0000000000090000-0x00000000000F6000-memory.dmp

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memory/1532-85-0x0000000000090000-0x00000000000F6000-memory.dmp

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memory/1532-83-0x0000000000090000-0x00000000000F6000-memory.dmp

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memory/1532-80-0x0000000000090000-0x00000000000F6000-memory.dmp

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memory/1764-72-0x0000000000400000-0x000000000046E000-memory.dmp

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memory/1764-76-0x0000000000400000-0x000000000046E000-memory.dmp

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memory/1764-69-0x0000000000400000-0x000000000046E000-memory.dmp

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memory/1764-67-0x0000000000400000-0x000000000046E000-memory.dmp

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memory/1764-65-0x0000000000400000-0x000000000046E000-memory.dmp

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memory/1764-64-0x0000000000400000-0x000000000046E000-memory.dmp

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memory/1764-89-0x0000000000400000-0x000000000046E000-memory.dmp

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memory/1784-77-0x0000000073EB0000-0x000000007445B000-memory.dmp

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memory/1784-88-0x0000000073EB0000-0x000000007445B000-memory.dmp

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