Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27/11/2022, 20:53

General

  • Target

    8163f4f76e3ca1d9caedfe56cf8afc3bd225fec0230209c272acb7535905cb36.exe

  • Size

    512KB

  • MD5

    aad62420ef60fbb4d99354d78f052d97

  • SHA1

    a521f95349b6479bfcb5bfa7ed45b68e6c080829

  • SHA256

    8163f4f76e3ca1d9caedfe56cf8afc3bd225fec0230209c272acb7535905cb36

  • SHA512

    d017ff2feb673d2aed5f592b83708b670f66758eba6b17aa09566b50b6e40fd26af0ec91e0a28d7a2bc38f41423bd07466081c1b10f2a113e22babd70457b9ea

  • SSDEEP

    12288:0+h9St2Ma70zIIc91Dwws4zruXic2O/3E4B:0+h9OY70z+warul3E4B

Score
9/10

Malware Config

Signatures

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Drops desktop.ini file(s) 2 IoCs
  • Drops file in Windows directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Enumerates system info in registry 2 TTPs 2 IoCs
  • Modifies system certificate store 2 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8163f4f76e3ca1d9caedfe56cf8afc3bd225fec0230209c272acb7535905cb36.exe
    "C:\Users\Admin\AppData\Local\Temp\8163f4f76e3ca1d9caedfe56cf8afc3bd225fec0230209c272acb7535905cb36.exe"
    1⤵
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Checks computer location settings
    • Enumerates system info in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:876
    • C:\Users\Admin\AppData\Local\Temp\n2624\s2624.exe
      "C:\Users\Admin\AppData\Local\Temp\n2624\s2624.exe" f57ccb5d6192d459df409a93XNY9QyIBgW0NNOUFRg4zn4OW39hLdd9iMU6TpajS+O48PRtmIPxlqGO/wI7R4sEOqHF1BNbFoopNpSB4cuO9Hcf80AIzyHenCvXs8t6RRqBIAARFgqpLgwcff9J+aq7av7FbxwFbObmU/mv+yFQEM68= /v "C:\Users\Admin\AppData\Local\Temp\8163f4f76e3ca1d9caedfe56cf8afc3bd225fec0230209c272acb7535905cb36.exe"
      2⤵
      • Executes dropped EXE
      • Drops desktop.ini file(s)
      • Drops file in Windows directory
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:2792

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        • C:\Users\Admin\AppData\Local\Temp\n2624\s2624.exe

          Filesize

          230KB

          MD5

          abaf13cb23de482dc944ab5b51ca3aac

          SHA1

          76837356db96dd56b647aba60f1adbbdc7b200fe

          SHA256

          b02fad5ac5234401505e1682c86f526951e8ded726687088c30987321f7c105e

          SHA512

          cc2aac30490511e49e1268f5df9139d176a3b849e663ad3b739e2f1cb50a6e084c465772ded5f694d5ec6f19ac40a57e5e64f7c47515f212476c20cbe9d6bce3

        • C:\Users\Admin\AppData\Local\Temp\n2624\s2624.exe

          Filesize

          230KB

          MD5

          abaf13cb23de482dc944ab5b51ca3aac

          SHA1

          76837356db96dd56b647aba60f1adbbdc7b200fe

          SHA256

          b02fad5ac5234401505e1682c86f526951e8ded726687088c30987321f7c105e

          SHA512

          cc2aac30490511e49e1268f5df9139d176a3b849e663ad3b739e2f1cb50a6e084c465772ded5f694d5ec6f19ac40a57e5e64f7c47515f212476c20cbe9d6bce3

        • memory/2792-138-0x00007FFB3BBF0000-0x00007FFB3C626000-memory.dmp

          Filesize

          10.2MB

        • memory/2792-139-0x0000000000DEA000-0x0000000000DEF000-memory.dmp

          Filesize

          20KB

        • memory/2792-140-0x0000000000DEA000-0x0000000000DEF000-memory.dmp

          Filesize

          20KB