Analysis

  • max time kernel
    29s
  • max time network
    138s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    12-06-2023 20:17

General

  • Target

    1389f6030ca4c578052e086f9df78c8c70d4fc17355eba0f247d93e38654dbf7.exe

  • Size

    2.5MB

  • MD5

    78679889e7ea520bee19a917e706ac91

  • SHA1

    8d9e3c13d80025a4dd0639df4ffc2219966c6a5b

  • SHA256

    1389f6030ca4c578052e086f9df78c8c70d4fc17355eba0f247d93e38654dbf7

  • SHA512

    73972aa04b3d8a340762b16d4cb2a9ce0713d11a2d46a4e8de81b9080e26882b3ee9a8be63b277aabd437292e89580e943c7b7233eb067575e21471c48f72fe6

  • SSDEEP

    6144:NLX+b8IWAUTEOXhjpztpygGN3JQL8+r5m:NLX+4II4OXhjp1EQG

Malware Config

Signatures

  • Blackmoon, KrBanker

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

  • Detect Blackmoon payload 6 IoCs
  • Deletes itself 1 IoCs
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 1 IoCs
  • UPX packed file 4 IoCs

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

  • Drops file in System32 directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\1389f6030ca4c578052e086f9df78c8c70d4fc17355eba0f247d93e38654dbf7.exe
    "C:\Users\Admin\AppData\Local\Temp\1389f6030ca4c578052e086f9df78c8c70d4fc17355eba0f247d93e38654dbf7.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in System32 directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1396
    • C:\Windows\SysWOW64\NJbAZZrX.exe
      "C:\Windows\system32\NJbAZZrX.exe" -auto
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetWindowsHookEx
      PID:1736
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\1389F6~1.EXE > nul
      2⤵
      • Deletes itself
      PID:1948
  • C:\Windows\SysWOW64\NJbAZZrX.exe
    C:\Windows\SysWOW64\NJbAZZrX.exe Service 1
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:588
    • C:\Windows\SysWOW64\NJbAZZrX.exe
      -ojbk
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:772

Network

MITRE ATT&CK Matrix ATT&CK v6

Discovery

System Information Discovery

1
T1082

Replay Monitor

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Downloads

  • C:\Windows\SysWOW64\NJbAZZrX.exe
    Filesize

    2.5MB

    MD5

    78679889e7ea520bee19a917e706ac91

    SHA1

    8d9e3c13d80025a4dd0639df4ffc2219966c6a5b

    SHA256

    1389f6030ca4c578052e086f9df78c8c70d4fc17355eba0f247d93e38654dbf7

    SHA512

    73972aa04b3d8a340762b16d4cb2a9ce0713d11a2d46a4e8de81b9080e26882b3ee9a8be63b277aabd437292e89580e943c7b7233eb067575e21471c48f72fe6

  • C:\Windows\SysWOW64\NJbAZZrX.exe
    Filesize

    2.5MB

    MD5

    78679889e7ea520bee19a917e706ac91

    SHA1

    8d9e3c13d80025a4dd0639df4ffc2219966c6a5b

    SHA256

    1389f6030ca4c578052e086f9df78c8c70d4fc17355eba0f247d93e38654dbf7

    SHA512

    73972aa04b3d8a340762b16d4cb2a9ce0713d11a2d46a4e8de81b9080e26882b3ee9a8be63b277aabd437292e89580e943c7b7233eb067575e21471c48f72fe6

  • C:\Windows\SysWOW64\NJbAZZrX.exe
    Filesize

    2.5MB

    MD5

    78679889e7ea520bee19a917e706ac91

    SHA1

    8d9e3c13d80025a4dd0639df4ffc2219966c6a5b

    SHA256

    1389f6030ca4c578052e086f9df78c8c70d4fc17355eba0f247d93e38654dbf7

    SHA512

    73972aa04b3d8a340762b16d4cb2a9ce0713d11a2d46a4e8de81b9080e26882b3ee9a8be63b277aabd437292e89580e943c7b7233eb067575e21471c48f72fe6

  • C:\Windows\SysWOW64\NJbAZZrX.exe
    Filesize

    2.5MB

    MD5

    78679889e7ea520bee19a917e706ac91

    SHA1

    8d9e3c13d80025a4dd0639df4ffc2219966c6a5b

    SHA256

    1389f6030ca4c578052e086f9df78c8c70d4fc17355eba0f247d93e38654dbf7

    SHA512

    73972aa04b3d8a340762b16d4cb2a9ce0713d11a2d46a4e8de81b9080e26882b3ee9a8be63b277aabd437292e89580e943c7b7233eb067575e21471c48f72fe6

  • C:\Windows\SysWOW64\NJbAZZrX.exe
    Filesize

    2.5MB

    MD5

    78679889e7ea520bee19a917e706ac91

    SHA1

    8d9e3c13d80025a4dd0639df4ffc2219966c6a5b

    SHA256

    1389f6030ca4c578052e086f9df78c8c70d4fc17355eba0f247d93e38654dbf7

    SHA512

    73972aa04b3d8a340762b16d4cb2a9ce0713d11a2d46a4e8de81b9080e26882b3ee9a8be63b277aabd437292e89580e943c7b7233eb067575e21471c48f72fe6

  • \Windows\SysWOW64\NJbAZZrX.exe
    Filesize

    2.5MB

    MD5

    78679889e7ea520bee19a917e706ac91

    SHA1

    8d9e3c13d80025a4dd0639df4ffc2219966c6a5b

    SHA256

    1389f6030ca4c578052e086f9df78c8c70d4fc17355eba0f247d93e38654dbf7

    SHA512

    73972aa04b3d8a340762b16d4cb2a9ce0713d11a2d46a4e8de81b9080e26882b3ee9a8be63b277aabd437292e89580e943c7b7233eb067575e21471c48f72fe6

  • memory/772-63-0x0000000000290000-0x000000000029B000-memory.dmp
    Filesize

    44KB

  • memory/772-64-0x0000000000290000-0x000000000029B000-memory.dmp
    Filesize

    44KB

  • memory/772-65-0x0000000000530000-0x000000000053B000-memory.dmp
    Filesize

    44KB

  • memory/772-66-0x00000000003A0000-0x00000000003A1000-memory.dmp
    Filesize

    4KB

  • memory/772-89-0x0000000000280000-0x0000000000281000-memory.dmp
    Filesize

    4KB

  • memory/772-90-0x0000000000530000-0x000000000053B000-memory.dmp
    Filesize

    44KB

  • memory/772-91-0x00000000003E0000-0x00000000003E1000-memory.dmp
    Filesize

    4KB

  • memory/772-93-0x00000000003D0000-0x00000000003D1000-memory.dmp
    Filesize

    4KB

  • memory/772-94-0x00000000003B0000-0x00000000003B1000-memory.dmp
    Filesize

    4KB