Analysis

  • max time kernel
    151s
  • max time network
    156s
  • platform
    windows7_x64
  • resource
    win7
  • submitted
    19-09-2020 00:19

General

  • Target

    3Z8QHEBk.tmp.exe

  • Size

    137KB

  • MD5

    0d969fd596743d82839ac89189f47a2b

  • SHA1

    2adb5aba20d3af1b9c78856555a08015b0f7df25

  • SHA256

    a3c625b0c6de6b9885470ce4e5f55e08e64c82c668cdc1df8d1a81d751f401be

  • SHA512

    ac2f7d71e8c547b6c8c12fc00ea9ef27a76daf59fdfe5b42cc32f42cebc85a689e04da239489a59c746300f89e1977f935ae94bd2a0047c27f428832a070068c

Malware Config

Extracted

Path

C:\Users\Admin\AppData\LocalLow\machineinfo.txt

Family

raccoon

Ransom Note
[Raccoon Stealer] - v1.5.13-af-hotfix Release Build compiled on Mon Jul 6 14:33:03 2020 Launched at: 2020.09.19 - 00:18:31 GMT Bot_ID: BAE8C589-5DA1-4C62-BE46-F8D74908CB8C_Admin Running on a desktop =R=A=C=C=O=O=N= - Cookies: 0 - Passwords: 0 - Files: 0 System Information: - System Language: English - System TimeZone: -0 hrs - IP: 154.61.71.51 - Location: 37.750999, -97.821999 | ?, ?, United States (?) - ComputerName: AVGLFESB - Username: Admin - Windows version: NT 6.1 - Product name: Windows 7 Professional - System arch: x64 - CPU: Persocon Processor 2.5+ (2 cores) - RAM: 2047 MB (419 MB used) - Screen resolution: 1280x720 - Display devices: 0) Standard VGA Graphics Adapter ============

Extracted

Family

smokeloader

Version

2020

C2

http://dkajsdjiqwdwnfj.info/

http://2831ujedkdajsdj.info/

http://928eijdksasnfss.info/

https://dkajsdjiqwdwnfj.info/

https://2831ujedkdajsdj.info/

https://928eijdksasnfss.info/

rc4.i32
rc4.i32

Extracted

Family

zloader

Botnet

DLLobnova

Campaign

02.09.2020dll

C2

https://fqnvtmqsywublocpheas.ru/gate.php

https://fqnvtmqsywublocpheas.su/gate.php

https://fqnvtmqsywublocpheas.eu/gate.php

https://fqnvtmqsywuikdjsmasablocpheas.eu/gate.php

https://fqnssvtmqsywufblocpheas.eu/gate.php

https://fqnvtmqsywublfocpheas.eu/gate.php

https://fqnvtmqsyfwublocpheas.eu/gate.php

https://fqnvtmqsywubflocpheas.eu/gate.php

rc4.plain
rsa_pubkey.plain

Signatures

  • Raccoon

    Simple but powerful infostealer which was very active in 2019.

  • Raccoon log file 1 IoCs

    Detects a log file produced by the Raccoon Stealer.

  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Zloader, Terdot, DELoader, ZeusSphinx

    Zloader is a malware strain that was initially discovered back in August 2015.

  • Blacklisted process makes network request 15 IoCs
  • Executes dropped EXE 1 IoCs
  • Deletes itself 1 IoCs
  • Loads dropped DLL 10 IoCs
  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • JavaScript code in executable 1 IoCs
  • Modifies service 2 TTPs 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Delays execution with timeout.exe 1 IoCs
  • Discovers systems in the same network 1 TTPs 2 IoCs
  • Gathers network information 2 TTPs 1 IoCs

    Uses commandline utility to view network configuration.

  • Modifies system certificate store 2 TTPs 2 IoCs
  • Runs net.exe
  • Suspicious behavior: EnumeratesProcesses 774 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of FindShellTrayWindow 4 IoCs
  • Suspicious use of SendNotifyMessage 4 IoCs
  • Suspicious use of WriteProcessMemory 69 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3Z8QHEBk.tmp.exe
    "C:\Users\Admin\AppData\Local\Temp\3Z8QHEBk.tmp.exe"
    1⤵
    • Loads dropped DLL
    • Checks SCSI registry key(s)
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    PID:1060
  • C:\Users\Admin\AppData\Local\Temp\975F.exe
    C:\Users\Admin\AppData\Local\Temp\975F.exe
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    • Modifies system certificate store
    • Suspicious use of WriteProcessMemory
    PID:1864
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /C timeout /T 10 /NOBREAK > Nul & Del /f /q "C:\Users\Admin\AppData\Local\Temp\975F.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:580
      • C:\Windows\SysWOW64\timeout.exe
        timeout /T 10 /NOBREAK
        3⤵
        • Delays execution with timeout.exe
        PID:688
  • C:\Windows\system32\regsvr32.exe
    regsvr32 /s C:\Users\Admin\AppData\Local\Temp\982B.dll
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1880
    • C:\Windows\SysWOW64\regsvr32.exe
      /s C:\Users\Admin\AppData\Local\Temp\982B.dll
      2⤵
      • Loads dropped DLL
      • Suspicious use of SetThreadContext
      • Suspicious use of WriteProcessMemory
      PID:1964
      • C:\Windows\SysWOW64\msiexec.exe
        msiexec.exe
        3⤵
        • Blacklisted process makes network request
        • Adds Run key to start application
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1064
        • C:\Windows\SysWOW64\cmd.exe
          cmd.exe /c ipconfig /all
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:788
          • C:\Windows\SysWOW64\ipconfig.exe
            ipconfig /all
            5⤵
            • Modifies service
            • Gathers network information
            PID:956
        • C:\Windows\SysWOW64\cmd.exe
          cmd.exe /c net config workstation
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:1400
          • C:\Windows\SysWOW64\net.exe
            net config workstation
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:1320
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 config workstation
              6⤵
                PID:1332
          • C:\Windows\SysWOW64\cmd.exe
            cmd.exe /c net view /all
            4⤵
            • Suspicious use of WriteProcessMemory
            PID:1068
            • C:\Windows\SysWOW64\net.exe
              net view /all
              5⤵
              • Discovers systems in the same network
              PID:1096
          • C:\Windows\SysWOW64\cmd.exe
            cmd.exe /c net view /all /domain
            4⤵
              PID:1244
              • C:\Windows\SysWOW64\net.exe
                net view /all /domain
                5⤵
                • Discovers systems in the same network
                PID:1448

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Local\Temp\975F.exe

      • C:\Users\Admin\AppData\Local\Temp\975F.exe

      • C:\Users\Admin\AppData\Local\Temp\982B.dll

      • \Users\Admin\AppData\LocalLow\3098htrhpen8ifg0\freebl3.dll

      • \Users\Admin\AppData\LocalLow\3098htrhpen8ifg0\freebl3.dll

      • \Users\Admin\AppData\LocalLow\3098htrhpen8ifg0\mozglue.dll

      • \Users\Admin\AppData\LocalLow\3098htrhpen8ifg0\msvcp140.dll

      • \Users\Admin\AppData\LocalLow\3098htrhpen8ifg0\nss3.dll

      • \Users\Admin\AppData\LocalLow\3098htrhpen8ifg0\softokn3.dll

      • \Users\Admin\AppData\LocalLow\3098htrhpen8ifg0\vcruntime140.dll

      • \Users\Admin\AppData\LocalLow\sqlite3.dll

      • \Users\Admin\AppData\Local\Temp\210A.tmp

      • \Users\Admin\AppData\Local\Temp\982B.dll

      • memory/468-12-0x000007FEF6B70000-0x000007FEF6DEA000-memory.dmp

        Filesize

        2.5MB

      • memory/580-22-0x0000000000000000-mapping.dmp

      • memory/688-23-0x0000000000000000-mapping.dmp

      • memory/788-28-0x0000000000000000-mapping.dmp

      • memory/956-29-0x0000000000000000-mapping.dmp

      • memory/1060-0-0x00000000061AB000-0x00000000061AC000-memory.dmp

        Filesize

        4KB

      • memory/1060-1-0x0000000007820000-0x0000000007831000-memory.dmp

        Filesize

        68KB

      • memory/1064-27-0x0000000000000000-mapping.dmp

      • memory/1064-24-0x0000000000090000-0x00000000000BB000-memory.dmp

        Filesize

        172KB

      • memory/1064-25-0x00000000000C0000-0x00000000000C1000-memory.dmp

        Filesize

        4KB

      • memory/1064-26-0x0000000000090000-0x00000000000BB000-memory.dmp

        Filesize

        172KB

      • memory/1068-33-0x0000000000000000-mapping.dmp

      • memory/1096-34-0x0000000000000000-mapping.dmp

      • memory/1244-35-0x0000000000000000-mapping.dmp

      • memory/1320-31-0x0000000000000000-mapping.dmp

      • memory/1324-3-0x0000000003C70000-0x0000000003C86000-memory.dmp

        Filesize

        88KB

      • memory/1332-32-0x0000000000000000-mapping.dmp

      • memory/1400-30-0x0000000000000000-mapping.dmp

      • memory/1448-36-0x0000000000000000-mapping.dmp

      • memory/1864-4-0x0000000000000000-mapping.dmp

      • memory/1864-10-0x0000000002948000-0x0000000002959000-memory.dmp

        Filesize

        68KB

      • memory/1864-11-0x0000000002C00000-0x0000000002C11000-memory.dmp

        Filesize

        68KB

      • memory/1880-6-0x0000000000000000-mapping.dmp

      • memory/1964-8-0x0000000000000000-mapping.dmp