Analysis

  • max time kernel
    52s
  • max time network
    135s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    13-01-2021 20:07

General

  • Target

    009090INVO.exe

  • Size

    208KB

  • MD5

    12c0f2c2f78e86429d18f146a59dec74

  • SHA1

    02220971c2c31549f26dee200024c6cce84a2375

  • SHA256

    5df5e69f38e5fc641a089f213a2791aa1a9d9df801093a6dbd3bfb680c38884c

  • SHA512

    0b7dc9853b26a007a006ccd2c02effc449213e627db2a01c5b8a174b21759116c56d9e97c1168732a2d97c66df4bb6ba9ffb32b60205032f42531357f90a538e

Score
10/10

Malware Config

Extracted

Family

remcos

C2

72.11.157.241:4445

Signatures

  • Remcos

    Remcos is a closed-source remote control and surveillance software.

  • UPX packed file 3 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Suspicious use of SetThreadContext 1 IoCs
  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 10 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\009090INVO.exe
    "C:\Users\Admin\AppData\Local\Temp\009090INVO.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:1180
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /Create /TN name /XML "C:\Users\Admin\AppData\Local\Temp\01693ecdc86149859089a7e2b34c7883.xml"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1032
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /Create /TN name /XML "C:\Users\Admin\AppData\Local\Temp\01693ecdc86149859089a7e2b34c7883.xml"
        3⤵
        • Creates scheduled task(s)
        PID:3048
    • C:\Users\Admin\AppData\Local\Temp\009090INVO.exe
      "C:\Users\Admin\AppData\Local\Temp\009090INVO.exe"
      2⤵
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of SetWindowsHookEx
      PID:1036

Network

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scheduled Task

1
T1053

Persistence

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\01693ecdc86149859089a7e2b34c7883.xml
    MD5

    aa2f6636e997aaa0b01fbc78b1dabe52

    SHA1

    fd462100fc91975dcbea8e361cf1eb8a70f6ad54

    SHA256

    d710b6eda22285684579d8b547e5be2f48883c4bf8db39993b00df30f9dc8723

    SHA512

    6540a3bbdbd3ab51679d5b32380e6c288bf6eba2777d067d40bfe65642ccafecd18028b102dfa46ac189d84282da2b6cb202a4f307587c5639f86834788f5104

  • memory/1032-2-0x0000000000000000-mapping.dmp
  • memory/1036-3-0x0000000000400000-0x000000000041D000-memory.dmp
    Filesize

    116KB

  • memory/1036-4-0x000000000041A7D0-mapping.dmp
  • memory/1036-6-0x0000000000400000-0x000000000041D000-memory.dmp
    Filesize

    116KB

  • memory/1036-7-0x0000000000400000-0x000000000041D000-memory.dmp
    Filesize

    116KB

  • memory/3048-8-0x0000000000000000-mapping.dmp