Analysis

  • max time kernel
    128s
  • max time network
    130s
  • platform
    windows7_x64
  • resource
    win7
  • submitted
    28-10-2020 15:34

General

  • Target

    exect.exe

  • Size

    670KB

  • MD5

    28e9316fb298d2e7a3d9fd71c662b3ec

  • SHA1

    1c3737add4444a2cb0842d1a5535005b7aa8e7a4

  • SHA256

    de5e9077481f7cf0b1addaeaaf21d6d39cabed2eea02276aaf9c241bce446c3d

  • SHA512

    ccf5bfd384e231180a8e1153b45a0be518d17dc782335d47c543f9dba48cd03c6bf7ce0b34dde92b88f404e248e7484dfac6c1f39dde5a40f40eafdf53eb7bce

Malware Config

Signatures

  • Hancitor

    Hancitor is downloader used to deliver other malware families.

  • Executes dropped EXE 1 IoCs
  • Deletes itself 1 IoCs
  • Loads dropped DLL 2 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Drops file in System32 directory 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\exect.exe
    "C:\Users\Admin\AppData\Local\Temp\exect.exe"
    1⤵
    • Loads dropped DLL
    • Adds Run key to start application
    • Drops file in System32 directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:480
    • C:\Windows\SysWOW64\WinHost32.exe
      C:\Windows\System32\WinHost32.exe
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      PID:1828
    • C:\Windows\SysWOW64\cmd.exe
      /c del C:\Users\Admin\AppData\Local\Temp\exect.exe >> NUL
      2⤵
      • Deletes itself
      PID:1852

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

1
T1112

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Windows\SysWOW64\WinHost32.exe
    MD5

    28e9316fb298d2e7a3d9fd71c662b3ec

    SHA1

    1c3737add4444a2cb0842d1a5535005b7aa8e7a4

    SHA256

    de5e9077481f7cf0b1addaeaaf21d6d39cabed2eea02276aaf9c241bce446c3d

    SHA512

    ccf5bfd384e231180a8e1153b45a0be518d17dc782335d47c543f9dba48cd03c6bf7ce0b34dde92b88f404e248e7484dfac6c1f39dde5a40f40eafdf53eb7bce

  • \Windows\SysWOW64\WinHost32.exe
    MD5

    28e9316fb298d2e7a3d9fd71c662b3ec

    SHA1

    1c3737add4444a2cb0842d1a5535005b7aa8e7a4

    SHA256

    de5e9077481f7cf0b1addaeaaf21d6d39cabed2eea02276aaf9c241bce446c3d

    SHA512

    ccf5bfd384e231180a8e1153b45a0be518d17dc782335d47c543f9dba48cd03c6bf7ce0b34dde92b88f404e248e7484dfac6c1f39dde5a40f40eafdf53eb7bce

  • \Windows\SysWOW64\WinHost32.exe
    MD5

    28e9316fb298d2e7a3d9fd71c662b3ec

    SHA1

    1c3737add4444a2cb0842d1a5535005b7aa8e7a4

    SHA256

    de5e9077481f7cf0b1addaeaaf21d6d39cabed2eea02276aaf9c241bce446c3d

    SHA512

    ccf5bfd384e231180a8e1153b45a0be518d17dc782335d47c543f9dba48cd03c6bf7ce0b34dde92b88f404e248e7484dfac6c1f39dde5a40f40eafdf53eb7bce

  • memory/1448-5-0x000007FEF6900000-0x000007FEF6B7A000-memory.dmp
    Filesize

    2.5MB

  • memory/1828-2-0x0000000000000000-mapping.dmp
  • memory/1852-4-0x0000000000000000-mapping.dmp