Analysis

  • max time kernel
    149s
  • max time network
    156s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    25/06/2022, 09:45

General

  • Target

    686865bdb53d411324e68b0f9142778c09e5a68a0bb0399b4e715ab8effcaac8.exe

  • Size

    5.6MB

  • MD5

    b7d25aa4393b4d7fe46b458546c58fe5

  • SHA1

    fd395148fc1f4c15467e3b2d90c94bbcff8c656e

  • SHA256

    686865bdb53d411324e68b0f9142778c09e5a68a0bb0399b4e715ab8effcaac8

  • SHA512

    3d228f5303feeb5d13df2cfa46cd4e701e0d44a53c36c4b14f0cf9c08f1f1e454558c6419a048ac05970364885c4c79d7cfa7c828f93e83f8444ee1917f27c45

Malware Config

Signatures

  • CryptBot

    A C++ stealer distributed widely in bundle with other software.

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 2 IoCs
  • Blocklisted process makes network request 4 IoCs
  • Executes dropped EXE 3 IoCs
  • Checks BIOS information in registry 2 TTPs 4 IoCs

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

  • Identifies Wine through registry keys 2 TTPs 2 IoCs

    Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

  • Loads dropped DLL 11 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • Drops file in Program Files directory 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of FindShellTrayWindow 12 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\686865bdb53d411324e68b0f9142778c09e5a68a0bb0399b4e715ab8effcaac8.exe
    "C:\Users\Admin\AppData\Local\Temp\686865bdb53d411324e68b0f9142778c09e5a68a0bb0399b4e715ab8effcaac8.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in Program Files directory
    • Suspicious use of WriteProcessMemory
    PID:1984
    • C:\Program Files (x86)\Krontal\for_win\setup.exe
      "C:\Program Files (x86)\Krontal\for_win\setup.exe"
      2⤵
      • Identifies VirtualBox via ACPI registry values (likely anti-VM)
      • Executes dropped EXE
      • Checks BIOS information in registry
      • Identifies Wine through registry keys
      • Loads dropped DLL
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      PID:1620
    • C:\Windows\SysWOW64\CScript.exe
      "C:\Windows\system32\CScript.exe" "C:\Program Files (x86)\Krontal\for_win\Two.vbs" //e:vbscript //B //NOLOGO
      2⤵
      • Blocklisted process makes network request
      PID:1388
    • C:\Program Files (x86)\Krontal\for_win\7z1900-x64.exe
      "C:\Program Files (x86)\Krontal\for_win\7z1900-x64.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      PID:1924
    • C:\Program Files (x86)\Krontal\for_win\lang.exe
      "C:\Program Files (x86)\Krontal\for_win\lang.exe"
      2⤵
      • Identifies VirtualBox via ACPI registry values (likely anti-VM)
      • Executes dropped EXE
      • Checks BIOS information in registry
      • Identifies Wine through registry keys
      • Loads dropped DLL
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious behavior: EnumeratesProcesses
      PID:864

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Program Files (x86)\Krontal\for_win\7z1900-x64.exe

    Filesize

    1.4MB

    MD5

    d7b20f933be6cdae41efbe75548eba5f

    SHA1

    9fa11a63b43f83980e0b48dc9ba2cb59d545a4e8

    SHA256

    0f5d4dbbe5e55b7aa31b91e5925ed901fdf46a367491d81381846f05ad54c45e

    SHA512

    af8f38679e16c996ffac152cac49369cf4b609abbd2cad07f49a114a82c6b5e564be29630c0fd2418110cf1a3d0ef3c9cc12f9164a69a575c91d9b98ce0df1a9

  • C:\Program Files (x86)\Krontal\for_win\7z1900-x64.exe

    Filesize

    1.4MB

    MD5

    d7b20f933be6cdae41efbe75548eba5f

    SHA1

    9fa11a63b43f83980e0b48dc9ba2cb59d545a4e8

    SHA256

    0f5d4dbbe5e55b7aa31b91e5925ed901fdf46a367491d81381846f05ad54c45e

    SHA512

    af8f38679e16c996ffac152cac49369cf4b609abbd2cad07f49a114a82c6b5e564be29630c0fd2418110cf1a3d0ef3c9cc12f9164a69a575c91d9b98ce0df1a9

  • C:\Program Files (x86)\Krontal\for_win\Two.vbs

    Filesize

    120B

    MD5

    dce4476454d12f8906cfa1db72722e2d

    SHA1

    4437a74ae0fcf7a4a636c04b7c0b80880871816a

    SHA256

    53908a91a2c298fcfd2cd278d4e273ecd55a3b5c81f10775307352aca5e211e8

    SHA512

    5a13b419813e768be03069332d3f655609221391b7faab5ed8c90ea57a7a26861ed0b5a256619ce9b8e62579e9e3ef9b0e8a37d6a688cb3795c62ea8cd55786f

  • C:\Program Files (x86)\Krontal\for_win\lang.exe

    Filesize

    2.1MB

    MD5

    3e81339d8ba9eef1da63fa9f70947ef8

    SHA1

    02b369df2fed69a810737125e232faced0b1961e

    SHA256

    a15eb140a5b7a7d6293764941095d91416347bc4fbe4d88dfa135e8796f7b930

    SHA512

    ee9225c0fd6edba92829357038e7fb5e246416e8e7d7424d8010c742a480c4adf2fb4ca8041a26809468f64efcd8f7adafea795afd8deb36288c198c9358f012

  • C:\Program Files (x86)\Krontal\for_win\lang.exe

    Filesize

    2.1MB

    MD5

    3e81339d8ba9eef1da63fa9f70947ef8

    SHA1

    02b369df2fed69a810737125e232faced0b1961e

    SHA256

    a15eb140a5b7a7d6293764941095d91416347bc4fbe4d88dfa135e8796f7b930

    SHA512

    ee9225c0fd6edba92829357038e7fb5e246416e8e7d7424d8010c742a480c4adf2fb4ca8041a26809468f64efcd8f7adafea795afd8deb36288c198c9358f012

  • C:\Program Files (x86)\Krontal\for_win\setup.exe

    Filesize

    2.1MB

    MD5

    e02665c346be06a879290d963e924174

    SHA1

    f9ca2876a0ea298d6c745fca7887d4bbb4284dd8

    SHA256

    2df20e3b1de29cd7dc70019017592b353a2e087766294ae051a8cbd0c5428ae8

    SHA512

    782b39a831eeb9989655560a28e41b573a3a94beab223a5c1933ac39d427cad964648aef0ee3c770bf5ced96e775f950cb6055b67850436ac7a058ce6db86c9c

  • C:\Program Files (x86)\Krontal\for_win\setup.exe

    Filesize

    2.1MB

    MD5

    e02665c346be06a879290d963e924174

    SHA1

    f9ca2876a0ea298d6c745fca7887d4bbb4284dd8

    SHA256

    2df20e3b1de29cd7dc70019017592b353a2e087766294ae051a8cbd0c5428ae8

    SHA512

    782b39a831eeb9989655560a28e41b573a3a94beab223a5c1933ac39d427cad964648aef0ee3c770bf5ced96e775f950cb6055b67850436ac7a058ce6db86c9c

  • \Program Files (x86)\Krontal\for_win\7z1900-x64.exe

    Filesize

    1.4MB

    MD5

    d7b20f933be6cdae41efbe75548eba5f

    SHA1

    9fa11a63b43f83980e0b48dc9ba2cb59d545a4e8

    SHA256

    0f5d4dbbe5e55b7aa31b91e5925ed901fdf46a367491d81381846f05ad54c45e

    SHA512

    af8f38679e16c996ffac152cac49369cf4b609abbd2cad07f49a114a82c6b5e564be29630c0fd2418110cf1a3d0ef3c9cc12f9164a69a575c91d9b98ce0df1a9

  • \Program Files (x86)\Krontal\for_win\7z1900-x64.exe

    Filesize

    1.4MB

    MD5

    d7b20f933be6cdae41efbe75548eba5f

    SHA1

    9fa11a63b43f83980e0b48dc9ba2cb59d545a4e8

    SHA256

    0f5d4dbbe5e55b7aa31b91e5925ed901fdf46a367491d81381846f05ad54c45e

    SHA512

    af8f38679e16c996ffac152cac49369cf4b609abbd2cad07f49a114a82c6b5e564be29630c0fd2418110cf1a3d0ef3c9cc12f9164a69a575c91d9b98ce0df1a9

  • \Program Files (x86)\Krontal\for_win\7z1900-x64.exe

    Filesize

    1.4MB

    MD5

    d7b20f933be6cdae41efbe75548eba5f

    SHA1

    9fa11a63b43f83980e0b48dc9ba2cb59d545a4e8

    SHA256

    0f5d4dbbe5e55b7aa31b91e5925ed901fdf46a367491d81381846f05ad54c45e

    SHA512

    af8f38679e16c996ffac152cac49369cf4b609abbd2cad07f49a114a82c6b5e564be29630c0fd2418110cf1a3d0ef3c9cc12f9164a69a575c91d9b98ce0df1a9

  • \Program Files (x86)\Krontal\for_win\lang.exe

    Filesize

    2.1MB

    MD5

    3e81339d8ba9eef1da63fa9f70947ef8

    SHA1

    02b369df2fed69a810737125e232faced0b1961e

    SHA256

    a15eb140a5b7a7d6293764941095d91416347bc4fbe4d88dfa135e8796f7b930

    SHA512

    ee9225c0fd6edba92829357038e7fb5e246416e8e7d7424d8010c742a480c4adf2fb4ca8041a26809468f64efcd8f7adafea795afd8deb36288c198c9358f012

  • \Program Files (x86)\Krontal\for_win\lang.exe

    Filesize

    2.1MB

    MD5

    3e81339d8ba9eef1da63fa9f70947ef8

    SHA1

    02b369df2fed69a810737125e232faced0b1961e

    SHA256

    a15eb140a5b7a7d6293764941095d91416347bc4fbe4d88dfa135e8796f7b930

    SHA512

    ee9225c0fd6edba92829357038e7fb5e246416e8e7d7424d8010c742a480c4adf2fb4ca8041a26809468f64efcd8f7adafea795afd8deb36288c198c9358f012

  • \Program Files (x86)\Krontal\for_win\lang.exe

    Filesize

    2.1MB

    MD5

    3e81339d8ba9eef1da63fa9f70947ef8

    SHA1

    02b369df2fed69a810737125e232faced0b1961e

    SHA256

    a15eb140a5b7a7d6293764941095d91416347bc4fbe4d88dfa135e8796f7b930

    SHA512

    ee9225c0fd6edba92829357038e7fb5e246416e8e7d7424d8010c742a480c4adf2fb4ca8041a26809468f64efcd8f7adafea795afd8deb36288c198c9358f012

  • \Program Files (x86)\Krontal\for_win\setup.exe

    Filesize

    2.1MB

    MD5

    e02665c346be06a879290d963e924174

    SHA1

    f9ca2876a0ea298d6c745fca7887d4bbb4284dd8

    SHA256

    2df20e3b1de29cd7dc70019017592b353a2e087766294ae051a8cbd0c5428ae8

    SHA512

    782b39a831eeb9989655560a28e41b573a3a94beab223a5c1933ac39d427cad964648aef0ee3c770bf5ced96e775f950cb6055b67850436ac7a058ce6db86c9c

  • \Program Files (x86)\Krontal\for_win\setup.exe

    Filesize

    2.1MB

    MD5

    e02665c346be06a879290d963e924174

    SHA1

    f9ca2876a0ea298d6c745fca7887d4bbb4284dd8

    SHA256

    2df20e3b1de29cd7dc70019017592b353a2e087766294ae051a8cbd0c5428ae8

    SHA512

    782b39a831eeb9989655560a28e41b573a3a94beab223a5c1933ac39d427cad964648aef0ee3c770bf5ced96e775f950cb6055b67850436ac7a058ce6db86c9c

  • \Program Files (x86)\Krontal\for_win\setup.exe

    Filesize

    2.1MB

    MD5

    e02665c346be06a879290d963e924174

    SHA1

    f9ca2876a0ea298d6c745fca7887d4bbb4284dd8

    SHA256

    2df20e3b1de29cd7dc70019017592b353a2e087766294ae051a8cbd0c5428ae8

    SHA512

    782b39a831eeb9989655560a28e41b573a3a94beab223a5c1933ac39d427cad964648aef0ee3c770bf5ced96e775f950cb6055b67850436ac7a058ce6db86c9c

  • \Users\Admin\AppData\Local\Temp\nsj1B9E.tmp\UAC.dll

    Filesize

    14KB

    MD5

    adb29e6b186daa765dc750128649b63d

    SHA1

    160cbdc4cb0ac2c142d361df138c537aa7e708c9

    SHA256

    2f7f8fc05dc4fd0d5cda501b47e4433357e887bbfed7292c028d99c73b52dc08

    SHA512

    b28adcccf0c33660fecd6f95f28f11f793dc9988582187617b4c113fb4e6fdad4cf7694cd8c0300a477e63536456894d119741a940dda09b7df3ff0087a7eada

  • \Users\Admin\AppData\Local\Temp\nsj1B9E.tmp\nsExec.dll

    Filesize

    6KB

    MD5

    132e6153717a7f9710dcea4536f364cd

    SHA1

    e39bc82c7602e6dd0797115c2bd12e872a5fb2ab

    SHA256

    d29afce2588d8dd7bb94c00ca91cac0e85b80ffa6b221f5ffcb83a2497228eb2

    SHA512

    9aeb0b3051ce07fb9f03dfee7cea4a5e423425e48cb538173bd2a167817f867a30bd4d27d07875f27ca00031745b24547030b7f146660b049fa717590f1c77e1

  • memory/864-100-0x0000000000400000-0x0000000000934000-memory.dmp

    Filesize

    5.2MB

  • memory/864-104-0x0000000000400000-0x0000000000934000-memory.dmp

    Filesize

    5.2MB

  • memory/864-103-0x0000000077AF0000-0x0000000077C70000-memory.dmp

    Filesize

    1.5MB

  • memory/864-108-0x0000000000400000-0x0000000000934000-memory.dmp

    Filesize

    5.2MB

  • memory/864-102-0x0000000001340000-0x0000000001874000-memory.dmp

    Filesize

    5.2MB

  • memory/864-101-0x0000000001340000-0x0000000001874000-memory.dmp

    Filesize

    5.2MB

  • memory/864-109-0x0000000000400000-0x0000000000934000-memory.dmp

    Filesize

    5.2MB

  • memory/1620-69-0x0000000001410000-0x0000000001944000-memory.dmp

    Filesize

    5.2MB

  • memory/1620-106-0x0000000077AF0000-0x0000000077C70000-memory.dmp

    Filesize

    1.5MB

  • memory/1620-70-0x0000000001410000-0x0000000001944000-memory.dmp

    Filesize

    5.2MB

  • memory/1620-73-0x0000000000AE0000-0x0000000001014000-memory.dmp

    Filesize

    5.2MB

  • memory/1620-68-0x0000000000AE0000-0x0000000001014000-memory.dmp

    Filesize

    5.2MB

  • memory/1620-71-0x00000000742A1000-0x00000000742A3000-memory.dmp

    Filesize

    8KB

  • memory/1620-72-0x0000000077AF0000-0x0000000077C70000-memory.dmp

    Filesize

    1.5MB

  • memory/1620-107-0x0000000000AE0000-0x0000000001014000-memory.dmp

    Filesize

    5.2MB

  • memory/1620-74-0x0000000073D91000-0x0000000073D93000-memory.dmp

    Filesize

    8KB

  • memory/1620-75-0x0000000074251000-0x0000000074253000-memory.dmp

    Filesize

    8KB

  • memory/1620-83-0x0000000074901000-0x0000000074903000-memory.dmp

    Filesize

    8KB

  • memory/1620-105-0x0000000000AE0000-0x0000000001014000-memory.dmp

    Filesize

    5.2MB

  • memory/1984-93-0x0000000002660000-0x0000000002B94000-memory.dmp

    Filesize

    5.2MB

  • memory/1984-54-0x0000000075DB1000-0x0000000075DB3000-memory.dmp

    Filesize

    8KB

  • memory/1984-67-0x00000000025E0000-0x0000000002B14000-memory.dmp

    Filesize

    5.2MB