Resubmissions

02-10-2021 16:02

211002-tg7znsedh5 10

26-09-2021 14:41

210926-r2e4aafaa8 10

Analysis

  • max time kernel
    146s
  • max time network
    148s
  • platform
    windows7_x64
  • resource
    win7v20210408
  • submitted
    02-10-2021 16:02

General

  • Target

    Adobe-Indesign-Business-Plan-Template-Free.msi

  • Size

    108.5MB

  • MD5

    82dbf0d2b49de42dc700df7c96b41eb1

  • SHA1

    509c08fd9805cf2034fec547c0fc962423a96a3b

  • SHA256

    7ada6e666c34aacaf7c93d11ca2e563ec53da37fb23a181631809d0d5ef14387

  • SHA512

    3d256fba291eb2f4a81ef53d8db8a333f3fb26a9a2c90e3c28bb0a944dc8bba2a2c8902232b14e6a9debdf93a2ff100faabb2be2053aac7fc2ccbdbd2f98fc83

Malware Config

Extracted

Family

jupyter

Version

SP-18

C2

http://188.241.83.61

Signatures

  • Jupyter Backdoor/Client Payload 1 IoCs
  • Jupyter, SolarMarker

    Jupyter is a backdoor and infostealer first seen in mid 2020.

  • Blocklisted process makes network request 3 IoCs
  • Executes dropped EXE 2 IoCs
  • Drops startup file 1 IoCs
  • Loads dropped DLL 12 IoCs
  • Checks installed software on the system 1 TTPs

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

  • Enumerates connected drives 3 TTPs 48 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Drops file in System32 directory 1 IoCs
  • Modifies registry class 7 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of WriteProcessMemory 25 IoCs

Processes

  • C:\Windows\system32\msiexec.exe
    msiexec.exe /I C:\Users\Admin\AppData\Local\Temp\Adobe-Indesign-Business-Plan-Template-Free.msi
    1⤵
    • Blocklisted process makes network request
    • Enumerates connected drives
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of WriteProcessMemory
    PID:1840
    • C:\Users\Admin\AppData\Local\Temp\MSI8937.tmp
      "C:\Users\Admin\AppData\Local\Temp\MSI8937.tmp"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:1436
      • C:\Windows\Temp\{546D6E0B-7BE4-4839-901B-65B90D9BCC36}\.cr\MSI8937.tmp
        "C:\Windows\Temp\{546D6E0B-7BE4-4839-901B-65B90D9BCC36}\.cr\MSI8937.tmp" -burn.clean.room="C:\Users\Admin\AppData\Local\Temp\MSI8937.tmp" -burn.filehandle.attached=180 -burn.filehandle.self=188
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        PID:472
  • C:\Windows\system32\msiexec.exe
    C:\Windows\system32\msiexec.exe /V
    1⤵
    • Enumerates connected drives
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1260
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding D0B6FCDC0E17D0F8916305DF87B54653 C
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:1376
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        -NoProfile -Noninteractive -ExecutionPolicy Bypass -File "C:\Users\Admin\AppData\Local\Temp\pss8E6C.ps1" -propFile "C:\Users\Admin\AppData\Local\Temp\msi8E3A.txt" -scriptFile "C:\Users\Admin\AppData\Local\Temp\scr8E3B.ps1" -scriptArgsFile "C:\Users\Admin\AppData\Local\Temp\scr8E3C.txt" -propSep " :<->: " -testPrefix "_testValue."
        3⤵
        • Blocklisted process makes network request
        • Drops startup file
        • Drops file in System32 directory
        • Modifies registry class
        • Suspicious behavior: EnumeratesProcesses
        PID:1944

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/472-95-0x0000000000EF0000-0x0000000000EF1000-memory.dmp

    Filesize

    4KB

  • memory/472-83-0x0000000001073000-0x0000000001074000-memory.dmp

    Filesize

    4KB

  • memory/472-82-0x0000000001070000-0x0000000001071000-memory.dmp

    Filesize

    4KB

  • memory/472-81-0x0000000000550000-0x0000000000551000-memory.dmp

    Filesize

    4KB

  • memory/472-85-0x0000000001071000-0x0000000001072000-memory.dmp

    Filesize

    4KB

  • memory/472-104-0x0000000001079000-0x000000000108A000-memory.dmp

    Filesize

    68KB

  • memory/472-101-0x0000000000F50000-0x0000000000F51000-memory.dmp

    Filesize

    4KB

  • memory/472-91-0x0000000003050000-0x0000000003051000-memory.dmp

    Filesize

    4KB

  • memory/472-97-0x0000000001074000-0x0000000001075000-memory.dmp

    Filesize

    4KB

  • memory/1376-63-0x0000000074D91000-0x0000000074D93000-memory.dmp

    Filesize

    8KB

  • memory/1840-60-0x000007FEFB681000-0x000007FEFB683000-memory.dmp

    Filesize

    8KB

  • memory/1944-84-0x00000000047E0000-0x00000000047E1000-memory.dmp

    Filesize

    4KB

  • memory/1944-113-0x0000000006090000-0x0000000006091000-memory.dmp

    Filesize

    4KB

  • memory/1944-78-0x0000000000E50000-0x0000000000E51000-memory.dmp

    Filesize

    4KB

  • memory/1944-103-0x0000000005260000-0x0000000005261000-memory.dmp

    Filesize

    4KB

  • memory/1944-86-0x00000000047E2000-0x00000000047E3000-memory.dmp

    Filesize

    4KB

  • memory/1944-96-0x00000000045D0000-0x00000000045D1000-memory.dmp

    Filesize

    4KB

  • memory/1944-108-0x0000000005680000-0x0000000005681000-memory.dmp

    Filesize

    4KB

  • memory/1944-87-0x0000000004820000-0x0000000004821000-memory.dmp

    Filesize

    4KB

  • memory/1944-114-0x00000000062A0000-0x00000000062A1000-memory.dmp

    Filesize

    4KB

  • memory/1944-121-0x0000000006200000-0x0000000006201000-memory.dmp

    Filesize

    4KB

  • memory/1944-122-0x0000000006330000-0x0000000006331000-memory.dmp

    Filesize

    4KB

  • memory/1944-124-0x000000007EF30000-0x000000007EF31000-memory.dmp

    Filesize

    4KB

  • memory/1944-125-0x0000000006410000-0x000000000641B000-memory.dmp

    Filesize

    44KB