Resubmissions

18-03-2024 04:26

240318-e2p72agh5t 10

01-07-2023 07:56

230701-jszsbshc4x 10

Analysis

  • max time kernel
    149s
  • max time network
    132s
  • platform
    windows7_x64
  • resource
    win7-20230621-en
  • resource tags

    arch:x64arch:x86image:win7-20230621-enlocale:en-usos:windows7-x64system
  • submitted
    01-07-2023 07:56

General

  • Target

    fwexe.exe

  • Size

    84KB

  • MD5

    bc6da13176887a094ff712a2e2a58ba4

  • SHA1

    e67aff93f62eaf757b3167d86936cb71d653c8cf

  • SHA256

    cede6ac238893e42da9d3df998429d991ff02cdcd018f7de4e7b379c3d5fdc6a

  • SHA512

    555a7898693be4d4c5b265a6ed14656515efafd1f03beeb248e6aafafe3638095d39d5eb60589f74b5ca46a2fd835f182ca54ed0e1ad600c53098b57f57ed016

  • SSDEEP

    1536:qZye8psDhdvoYIflDvf+RBe50UE8Feu6JsuDTpU0WyTwJg:6vdvYlDvWRBeiUDTBwVU0H8O

Malware Config

Signatures

  • Blackmoon, KrBanker

    Blackmoon also known as KrBanker is banking trojan first discovered in early 2014.

  • Detect Blackmoon payload 4 IoCs
  • Downloads MZ/PE file
  • Drops file in Drivers directory 8 IoCs
  • Sets service image path in registry 2 TTPs 6 IoCs
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 2 IoCs
  • UPX packed file 11 IoCs

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

  • Maps connected drives based on registry 3 TTPs 2 IoCs

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

  • Drops file in Windows directory 1 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 13 IoCs
  • Suspicious behavior: LoadsDriver 12 IoCs
  • Suspicious use of AdjustPrivilegeToken 19 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 31 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\fwexe.exe
    "C:\Users\Admin\AppData\Local\Temp\fwexe.exe"
    1⤵
    • Drops file in Windows directory
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1068
    • C:\Windows\zlib.exe
      C:\Windows\\zlib.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:572
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c C:\Windows\temp\drxm\xm.bat
        3⤵
        • Loads dropped DLL
        • Suspicious use of WriteProcessMemory
        PID:316
        • C:\Windows\Temp\drxm\svchosh.exe
          C:\Windows\Temp\drxm\\svchosh.exe
          4⤵
          • Drops file in Drivers directory
          • Sets service image path in registry
          • Executes dropped EXE
          • Maps connected drives based on registry
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: LoadsDriver
          • Suspicious use of AdjustPrivilegeToken
          PID:984
        • C:\Windows\SysWOW64\PING.EXE
          ping -n 5 127.0.0.1
          4⤵
          • Runs ping.exe
          PID:1856
        • C:\Windows\Temp\drxm\drx.exe
          C:\Windows\Temp\drxm\\drx.exe
          4⤵
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:948
          • C:\Windows\system32\convert.exe
            "C:\Windows\system32\convert.exe"
            5⤵
            • Suspicious behavior: EnumeratesProcesses
            PID:1504
          • C:\Windows\System32\cmd.exe
            "C:\Windows\System32\cmd.exe" /c del /Q /F "C:\Windows\Temp\drxm\drx.exe"
            5⤵
              PID:1820

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Windows\Temp\drxm\drx.exe

      Filesize

      222KB

      MD5

      fda6409e19a40a1b6dc73568199331f7

      SHA1

      a61f7250bd1f776c3dc63eaf12770690a399f25d

      SHA256

      b4937c04c982c68bacaeb575765d01aa5cdcacc8d42bfd7d62a51e19a1b4e0e5

      SHA512

      e33c360527cd6af875b60bce8ad95ded315a310975c62e122895b8957c3ebbd16ed984a8834e7c83bf690a0f92bdec773fb9c7ddb3a56ff10705c5520b0e0e84

    • C:\Windows\Temp\drxm\drx.exe

      Filesize

      222KB

      MD5

      fda6409e19a40a1b6dc73568199331f7

      SHA1

      a61f7250bd1f776c3dc63eaf12770690a399f25d

      SHA256

      b4937c04c982c68bacaeb575765d01aa5cdcacc8d42bfd7d62a51e19a1b4e0e5

      SHA512

      e33c360527cd6af875b60bce8ad95ded315a310975c62e122895b8957c3ebbd16ed984a8834e7c83bf690a0f92bdec773fb9c7ddb3a56ff10705c5520b0e0e84

    • C:\Windows\Temp\drxm\svchosh.exe

      Filesize

      766KB

      MD5

      a6dc95dbe25ef89c40c6943ab64d8b2d

      SHA1

      0d01f835a589191b6c28d264ee34a318df63012f

      SHA256

      8515560816e2e3caac0653012822b3fcc452568ce5544b97d19dbaccb03a03c5

      SHA512

      e8af6f224ad5deb8adcb63dc5f1feda67575f8c42da5969da335f536010c91879b3da9f128e6f949109ad848bd2eb9e962a51bc1a4e7b777a03d9f6f915954f9

    • C:\Windows\Temp\drxm\xm.bat

      Filesize

      203B

      MD5

      7ad87393edbfa2718bb172d84eb7ffc8

      SHA1

      59e87ca229b3fa0a4d023571d9b23e7652fe91a9

      SHA256

      638a70fc5c280af5821d6cc6a03877229a6458ed56df156c91fd0ec8f1a5965c

      SHA512

      ebed640fcf594e26fb175079160ee47c9dffb864f23903b588ee5d12910f3d35204ccd991ef46695a1a8da1531386d317256295eaeb2fe32fe5d86f843acbde6

    • C:\Windows\temp\drxm\xm.bat

      Filesize

      203B

      MD5

      7ad87393edbfa2718bb172d84eb7ffc8

      SHA1

      59e87ca229b3fa0a4d023571d9b23e7652fe91a9

      SHA256

      638a70fc5c280af5821d6cc6a03877229a6458ed56df156c91fd0ec8f1a5965c

      SHA512

      ebed640fcf594e26fb175079160ee47c9dffb864f23903b588ee5d12910f3d35204ccd991ef46695a1a8da1531386d317256295eaeb2fe32fe5d86f843acbde6

    • C:\Windows\zlib.exe

      Filesize

      1.1MB

      MD5

      2156499ed40b54d8602275a06fa527b9

      SHA1

      88bfaffeaf61e7c5dd2c5f9f60307adedbb6566f

      SHA256

      6933b2cb03952e5894ae9fcda474d628fd58b982167c6e70f1af468299c71223

      SHA512

      dc15fd515e411512072ceb033e9819865dc60908965a70b30ef435011f70e5c33e9485bc31e01bc30dd96cc8761d5eca6ae4de076d1b0f7ed8e328550c1ffae3

    • \Windows\Temp\drxm\drx.exe

      Filesize

      222KB

      MD5

      fda6409e19a40a1b6dc73568199331f7

      SHA1

      a61f7250bd1f776c3dc63eaf12770690a399f25d

      SHA256

      b4937c04c982c68bacaeb575765d01aa5cdcacc8d42bfd7d62a51e19a1b4e0e5

      SHA512

      e33c360527cd6af875b60bce8ad95ded315a310975c62e122895b8957c3ebbd16ed984a8834e7c83bf690a0f92bdec773fb9c7ddb3a56ff10705c5520b0e0e84

    • \Windows\Temp\drxm\svchosh.exe

      Filesize

      766KB

      MD5

      a6dc95dbe25ef89c40c6943ab64d8b2d

      SHA1

      0d01f835a589191b6c28d264ee34a318df63012f

      SHA256

      8515560816e2e3caac0653012822b3fcc452568ce5544b97d19dbaccb03a03c5

      SHA512

      e8af6f224ad5deb8adcb63dc5f1feda67575f8c42da5969da335f536010c91879b3da9f128e6f949109ad848bd2eb9e962a51bc1a4e7b777a03d9f6f915954f9

    • memory/572-76-0x0000000000A80000-0x0000000000BCE000-memory.dmp

      Filesize

      1.3MB

    • memory/948-86-0x000000013F1C0000-0x000000013F29B000-memory.dmp

      Filesize

      876KB

    • memory/948-93-0x000007FE7F7B0000-0x000007FE7F7B1000-memory.dmp

      Filesize

      4KB

    • memory/948-122-0x000000013F1C0000-0x000000013F29B000-memory.dmp

      Filesize

      876KB

    • memory/948-92-0x000007FE7F7A0000-0x000007FE7F7A1000-memory.dmp

      Filesize

      4KB

    • memory/948-90-0x0000000000460000-0x0000000000461000-memory.dmp

      Filesize

      4KB

    • memory/948-91-0x000007FE7F790000-0x000007FE7F791000-memory.dmp

      Filesize

      4KB

    • memory/1068-54-0x0000000000400000-0x0000000000454000-memory.dmp

      Filesize

      336KB

    • memory/1068-62-0x0000000000400000-0x0000000000454000-memory.dmp

      Filesize

      336KB

    • memory/1068-56-0x0000000000400000-0x0000000000454000-memory.dmp

      Filesize

      336KB

    • memory/1068-55-0x0000000000400000-0x0000000000454000-memory.dmp

      Filesize

      336KB

    • memory/1504-116-0x0000000000180000-0x0000000000577000-memory.dmp

      Filesize

      4.0MB

    • memory/1504-117-0x0000000000060000-0x0000000000061000-memory.dmp

      Filesize

      4KB

    • memory/1504-120-0x0000000000090000-0x0000000000093000-memory.dmp

      Filesize

      12KB

    • memory/1504-121-0x0000000000090000-0x0000000000093000-memory.dmp

      Filesize

      12KB

    • memory/1504-124-0x0000000000090000-0x0000000000093000-memory.dmp

      Filesize

      12KB

    • memory/1504-126-0x0000000002070000-0x000000000246C000-memory.dmp

      Filesize

      4.0MB