Analysis

  • max time kernel
    169s
  • max time network
    185s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    22-10-2022 14:41

General

  • Target

    7a044ca76c573b140d38e91b51a49fea69be0016d979d875030928b99ccd6d4c.exe

  • Size

    652KB

  • MD5

    bc6cba1924615d3419b578ec0dacb52a

  • SHA1

    e52ac072219ef95fd4594b6c882642fa1791eeb6

  • SHA256

    7a044ca76c573b140d38e91b51a49fea69be0016d979d875030928b99ccd6d4c

  • SHA512

    8212bf03afad0cd7c4ca1cb519baf36798d04a81dfce000b29f8e47ac4297628633fe35fbdfe9fca2cf75df77c53e5a9f57c8244761ba729990a4d6acb9a2483

  • SSDEEP

    12288:PIgegV1Ye7I9Kjj7D+pbAqmNlV2NCM3vHoFN6WtljaElI5w:Po41YKIGnqmNlkvHoFN6WtljaEy5w

Malware Config

Signatures

  • Generic Chinese Botnet

    A botnet originating from China which is currently unnamed publicly.

  • Chinese Botnet payload 2 IoCs
  • ASPack v2.12-2.42 4 IoCs

    Detects executables packed with ASPack v2.12-2.42

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 2 IoCs
  • Enumerates connected drives 3 TTPs 23 IoCs

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

  • Drops file in Program Files directory 64 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 39 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\7a044ca76c573b140d38e91b51a49fea69be0016d979d875030928b99ccd6d4c.exe
    "C:\Users\Admin\AppData\Local\Temp\7a044ca76c573b140d38e91b51a49fea69be0016d979d875030928b99ccd6d4c.exe"
    1⤵
    • Loads dropped DLL
    • Enumerates connected drives
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1364
    • C:\Users\Admin\AppData\Local\Temp\vlMOSo.exe
      C:\Users\Admin\AppData\Local\Temp\vlMOSo.exe
      2⤵
      • Executes dropped EXE
      • Drops file in Program Files directory
      • Suspicious use of WriteProcessMemory
      PID:480
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c ""C:\Users\Admin\AppData\Local\Temp\0c46278b.bat" "
        3⤵
          PID:680

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Discovery

    Query Registry

    2
    T1012

    Peripheral Device Discovery

    1
    T1120

    System Information Discovery

    3
    T1082

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\0c46278b.bat
      Filesize

      187B

      MD5

      b340f493a350e96bcf2908e84deee539

      SHA1

      5ea614d9506906059b2dfd6dc87abcd925996ed0

      SHA256

      1ef7fa6adbf06b56fcd56fdb19fc47f32f1d3e26a860ebd377297fbaff5d6249

      SHA512

      c96a7bafe092ca3de3204de55e41100446552427f82cf984aa1b5974a03a5810c022618e3a7581a87dce5348d9dfe044fd29bdbde27fa8f57206717b25172ffb

    • C:\Users\Admin\AppData\Local\Temp\vlMOSo.exe
      Filesize

      15KB

      MD5

      56b2c3810dba2e939a8bb9fa36d3cf96

      SHA1

      99ee31cd4b0d6a4b62779da36e0eeecdd80589fc

      SHA256

      4354970ccc7cd6bb16318f132c34f6a1b3d5c2ea7ff53e1c9271905527f2db07

      SHA512

      27812a9a034d7bd2ca73b337ae9e0b6dc79c38cfd1a2c6ac9d125d3cc8fa563c401a40d22155811d5054e5baa8cf8c8e7e03925f25fa856a9ba9dea708d15b4e

    • C:\Users\Admin\AppData\Local\Temp\vlMOSo.exe
      Filesize

      15KB

      MD5

      56b2c3810dba2e939a8bb9fa36d3cf96

      SHA1

      99ee31cd4b0d6a4b62779da36e0eeecdd80589fc

      SHA256

      4354970ccc7cd6bb16318f132c34f6a1b3d5c2ea7ff53e1c9271905527f2db07

      SHA512

      27812a9a034d7bd2ca73b337ae9e0b6dc79c38cfd1a2c6ac9d125d3cc8fa563c401a40d22155811d5054e5baa8cf8c8e7e03925f25fa856a9ba9dea708d15b4e

    • \Users\Admin\AppData\Local\Temp\vlMOSo.exe
      Filesize

      15KB

      MD5

      56b2c3810dba2e939a8bb9fa36d3cf96

      SHA1

      99ee31cd4b0d6a4b62779da36e0eeecdd80589fc

      SHA256

      4354970ccc7cd6bb16318f132c34f6a1b3d5c2ea7ff53e1c9271905527f2db07

      SHA512

      27812a9a034d7bd2ca73b337ae9e0b6dc79c38cfd1a2c6ac9d125d3cc8fa563c401a40d22155811d5054e5baa8cf8c8e7e03925f25fa856a9ba9dea708d15b4e

    • \Users\Admin\AppData\Local\Temp\vlMOSo.exe
      Filesize

      15KB

      MD5

      56b2c3810dba2e939a8bb9fa36d3cf96

      SHA1

      99ee31cd4b0d6a4b62779da36e0eeecdd80589fc

      SHA256

      4354970ccc7cd6bb16318f132c34f6a1b3d5c2ea7ff53e1c9271905527f2db07

      SHA512

      27812a9a034d7bd2ca73b337ae9e0b6dc79c38cfd1a2c6ac9d125d3cc8fa563c401a40d22155811d5054e5baa8cf8c8e7e03925f25fa856a9ba9dea708d15b4e

    • memory/480-65-0x0000000000270000-0x0000000000279000-memory.dmp
      Filesize

      36KB

    • memory/480-57-0x0000000000000000-mapping.dmp
    • memory/480-72-0x0000000000270000-0x0000000000279000-memory.dmp
      Filesize

      36KB

    • memory/680-71-0x0000000000000000-mapping.dmp
    • memory/1364-64-0x0000000000330000-0x0000000000339000-memory.dmp
      Filesize

      36KB

    • memory/1364-63-0x0000000000330000-0x0000000000339000-memory.dmp
      Filesize

      36KB

    • memory/1364-66-0x0000000000310000-0x0000000000313000-memory.dmp
      Filesize

      12KB

    • memory/1364-67-0x00000000002F0000-0x00000000002F6000-memory.dmp
      Filesize

      24KB

    • memory/1364-68-0x0000000010000000-0x0000000010018000-memory.dmp
      Filesize

      96KB

    • memory/1364-54-0x0000000075281000-0x0000000075283000-memory.dmp
      Filesize

      8KB

    • memory/1364-62-0x0000000000260000-0x000000000029F000-memory.dmp
      Filesize

      252KB

    • memory/1364-61-0x0000000000400000-0x0000000000567000-memory.dmp
      Filesize

      1.4MB

    • memory/1364-74-0x0000000000400000-0x0000000000567000-memory.dmp
      Filesize

      1.4MB

    • memory/1364-75-0x0000000000330000-0x0000000000339000-memory.dmp
      Filesize

      36KB