Analysis

  • max time kernel
    150s
  • max time network
    153s
  • platform
    windows7_x64
  • resource
    win7-20230705-en
  • resource tags

    arch:x64arch:x86image:win7-20230705-enlocale:en-usos:windows7-x64system
  • submitted
    08-07-2023 18:16

General

  • Target

    91b5c2ae08114eexeexeexeex.exe

  • Size

    308KB

  • MD5

    91b5c2ae08114eb93b204c8c9263627d

  • SHA1

    1d2abeec1f3dfde5b56ce1ed7f98375a254e899a

  • SHA256

    7ddc1919366b072312280e37a1b87279b61bf0d66c95ac9874e176a85bae1963

  • SHA512

    7f6c53bec162ee060568e136fc13e891ca4fd65dd7c21dc79cc0d1da1d149519e7ca818b37fb95e1a68e4d5aeaf3ca66763966790cbdccd7b863cfc7bf7160f5

  • SSDEEP

    6144:bzL7ShWDLVzVNam6GxI29dqG3KdYAYqTuPZp:JDHNam62ZdKmZmuPH

Malware Config

Signatures

  • GandCrab payload 4 IoCs
  • Gandcrab

    Gandcrab is a Trojan horse that encrypts files on a computer.

  • Unexpected DNS network traffic destination 47 IoCs

    Network traffic to other servers than the configured DNS servers was detected on the DNS port.

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Enumerates connected drives 3 TTPs 24 IoCs

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

  • Checks processor information in registry 2 TTPs 3 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of WriteProcessMemory 40 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\91b5c2ae08114eexeexeexeex.exe
    "C:\Users\Admin\AppData\Local\Temp\91b5c2ae08114eexeexeexeex.exe"
    1⤵
    • Adds Run key to start application
    • Enumerates connected drives
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1984
    • C:\Windows\SysWOW64\nslookup.exe
      nslookup carder.bit ns1.wowservers.ru
      2⤵
        PID:2980
      • C:\Windows\SysWOW64\nslookup.exe
        nslookup ransomware.bit ns2.wowservers.ru
        2⤵
          PID:2068
        • C:\Windows\SysWOW64\nslookup.exe
          nslookup carder.bit ns2.wowservers.ru
          2⤵
            PID:952
          • C:\Windows\SysWOW64\nslookup.exe
            nslookup ransomware.bit ns1.wowservers.ru
            2⤵
              PID:1268
            • C:\Windows\SysWOW64\nslookup.exe
              nslookup carder.bit ns1.wowservers.ru
              2⤵
                PID:1048
              • C:\Windows\SysWOW64\nslookup.exe
                nslookup ransomware.bit ns2.wowservers.ru
                2⤵
                  PID:2140
                • C:\Windows\SysWOW64\nslookup.exe
                  nslookup carder.bit ns2.wowservers.ru
                  2⤵
                    PID:1096
                  • C:\Windows\SysWOW64\nslookup.exe
                    nslookup ransomware.bit ns1.wowservers.ru
                    2⤵
                      PID:1988
                    • C:\Windows\SysWOW64\nslookup.exe
                      nslookup carder.bit ns1.wowservers.ru
                      2⤵
                        PID:2748
                      • C:\Windows\SysWOW64\nslookup.exe
                        nslookup ransomware.bit ns2.wowservers.ru
                        2⤵
                          PID:2628

                      Network

                      MITRE ATT&CK Enterprise v6

                      Replay Monitor

                      Loading Replay Monitor...

                      Downloads

                      • memory/1984-55-0x0000000000400000-0x0000000001400000-memory.dmp

                        Filesize

                        16.0MB

                      • memory/1984-56-0x00000000003E0000-0x00000000003F7000-memory.dmp

                        Filesize

                        92KB

                      • memory/1984-63-0x0000000000400000-0x0000000001400000-memory.dmp

                        Filesize

                        16.0MB

                      • memory/1984-65-0x00000000003E0000-0x00000000003F7000-memory.dmp

                        Filesize

                        92KB