Resubmissions

19/04/2023, 08:24

230419-ka3a6sbb6s7

12/04/2023, 15:38

230412-s3a2dsdb7510

Analysis

  • max time kernel
    150s
  • max time network
    143s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-es
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-eslocale:es-esos:windows10-2004-x64systemwindows
  • submitted
    12/04/2023, 15:38

General

  • Target
    CFDI-418.msi
  • Size 1.7MB
  • Sample230412-s3a2dsdb75
  • SHA256 d85571ef1ca53d5dcac1a99b06a64af069a20dca7e9d8b7706556b1317b4fb2f
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Detects Grandoreiro payload 5 IoCs
  • Grandoreiro

    Part of a group of banking trojans, targeting Spanish and Portuguese speaking countries.

  • LatentBot

    Modular trojan written in Delphi which has been in-the-wild since 2013.

  • Blocklisted process makes network request 1 IoCs
  • ASPack v2.12-2.42 2 IoCs

    Detects executables packed with ASPack v2.12-2.42

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 8 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Enumerates connected drives 3 TTPs 48 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Drops file in Windows directory 10 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 46 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Windows\system32\msiexec.exe
    msiexec.exe /I C:\Users\Admin\AppData\Local\Temp\CFDI-418.msi
    1⤵
    • Enumerates connected drives
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    PID:676
  • C:\Windows\system32\msiexec.exe
    C:\Windows\system32\msiexec.exe /V
    1⤵
    • Enumerates connected drives
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1732
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding E5A1241BAC43CFA3B384A16C58CC7554
      2⤵
      • Blocklisted process makes network request
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:4412
      • C:\Nvsofrsv\UIDCASTER.exe
        "C:\Nvsofrsv\UIDCASTER.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Adds Run key to start application
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of SetWindowsHookEx
        PID:1156

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        e566f99.rbs

        • Path C:\Config.Msi\e566f99.rbs
        • Size 754B
        • SHA256 9b5f9f1405ab87c80b079eb099ec5a292259dc7e210d12ca6bc0cfcd57126e29
        • MD5 SHA1 SHA512

        UIDCASTER.exe

        • Path C:\Nvsofrsv\UIDCASTER.exe
        • Size 2.2MB
        • SHA256 9625e775e955281732270b7a0fc468bef83b468be85e82e0659973aefa369782
        • MD5 SHA1 SHA512 SSDEEP

        UIDCASTER.exe

        • Path C:\Nvsofrsv\UIDCASTER.exe
        • Size 2.2MB
        • SHA256 9625e775e955281732270b7a0fc468bef83b468be85e82e0659973aefa369782
        • MD5 SHA1 SHA512 SSDEEP

        UIDCASTER.exe

        • Path C:\Nvsofrsv\UIDCASTER.exe
        • Size 2.2MB
        • SHA256 9625e775e955281732270b7a0fc468bef83b468be85e82e0659973aefa369782
        • MD5 SHA1 SHA512 SSDEEP

        dbghelp.dll

        • Path C:\Nvsofrsv\dbghelp.dll
        • Size 1.2MB
        • SHA256 c06430b8cb025be506be50a756488e1bcc3827c4f45158d93e4e3eeb98ce1e4f
        • MD5 SHA1 SHA512 SSDEEP

        dbghelp.dll

        • Path C:\Nvsofrsv\dbghelp.dll
        • Size 1.2MB
        • SHA256 c06430b8cb025be506be50a756488e1bcc3827c4f45158d93e4e3eeb98ce1e4f
        • MD5 SHA1 SHA512 SSDEEP

        uires.dll

        • Path C:\Nvsofrsv\uires.dll
        • Size 13.0MB
        • SHA256 207d66dae08ca39065019355802604768b213ed2817e78bea128f136784af6a7
        • MD5 SHA1 SHA512 SSDEEP

        uires.dll

        • Path C:\Nvsofrsv\uires.dll
        • Size 13.0MB
        • SHA256 207d66dae08ca39065019355802604768b213ed2817e78bea128f136784af6a7
        • MD5 SHA1 SHA512 SSDEEP

        uires.dll

        • Path C:\Nvsofrsv\uires.dll
        • Size 13.0MB
        • SHA256 207d66dae08ca39065019355802604768b213ed2817e78bea128f136784af6a7
        • MD5 SHA1 SHA512 SSDEEP

        zlibai.dll

        • Path C:\Nvsofrsv\zlibai.dll
        • Size 151.5MB
        • SHA256 1b14c6d1c6c64ac56f11787ce86e631694361aac36bbf3dfb3c18615299b3f3f
        • MD5 SHA1 SHA512 SSDEEP

        zlibai.dll

        • Path C:\Nvsofrsv\zlibai.dll
        • Size 151.5MB
        • SHA256 1b14c6d1c6c64ac56f11787ce86e631694361aac36bbf3dfb3c18615299b3f3f
        • MD5 SHA1 SHA512 SSDEEP

        zlibai.dll

        • Path C:\Nvsofrsv\zlibai.dll
        • Size 151.5MB
        • SHA256 1b14c6d1c6c64ac56f11787ce86e631694361aac36bbf3dfb3c18615299b3f3f
        • MD5 SHA1 SHA512 SSDEEP

        MSI7033.tmp

        • Path C:\Windows\Installer\MSI7033.tmp
        • Size 557KB
        • SHA256 ff86c76a8d5846b3a1ad58ff2fd8e5a06a84eb5899cdee98e59c548d33335550
        • MD5 SHA1 SHA512 SSDEEP

        MSI7033.tmp

        • Path C:\Windows\Installer\MSI7033.tmp
        • Size 557KB
        • SHA256 ff86c76a8d5846b3a1ad58ff2fd8e5a06a84eb5899cdee98e59c548d33335550
        • MD5 SHA1 SHA512 SSDEEP

        MSI813C.tmp

        • Path C:\Windows\Installer\MSI813C.tmp
        • Size 557KB
        • SHA256 ff86c76a8d5846b3a1ad58ff2fd8e5a06a84eb5899cdee98e59c548d33335550
        • MD5 SHA1 SHA512 SSDEEP

        MSI813C.tmp

        • Path C:\Windows\Installer\MSI813C.tmp
        • Size 557KB
        • SHA256 ff86c76a8d5846b3a1ad58ff2fd8e5a06a84eb5899cdee98e59c548d33335550
        • MD5 SHA1 SHA512 SSDEEP

        MSI8814.tmp

        • Path C:\Windows\Installer\MSI8814.tmp
        • Size 1000KB
        • SHA256 828bc53af70c73b1fb1464cc024c7d476ce6e16e75770865930d2635033c2137
        • MD5 SHA1 SHA512 SSDEEP

        MSI8814.tmp

        • Path C:\Windows\Installer\MSI8814.tmp
        • Size 1000KB
        • SHA256 828bc53af70c73b1fb1464cc024c7d476ce6e16e75770865930d2635033c2137
        • MD5 SHA1 SHA512 SSDEEP

        memory/1156-208-0x000000000C4E0000-0x000000000C4E1000-memory.dmp

        memory/1156-214-0x000000000CDF0000-0x000000000CDF1000-memory.dmp

        memory/1156-201-0x0000000001400000-0x0000000002400000-memory.dmp

        memory/1156-216-0x000000000C610000-0x000000000C611000-memory.dmp

        memory/1156-203-0x000000000AD40000-0x000000000AD41000-memory.dmp

        memory/1156-204-0x000000000C380000-0x000000000C381000-memory.dmp

        memory/1156-205-0x000000000C4B0000-0x000000000C4B1000-memory.dmp

        memory/1156-206-0x000000000C4C0000-0x000000000C4C1000-memory.dmp

        memory/1156-207-0x000000000C4D0000-0x000000000C4D1000-memory.dmp

        memory/1156-215-0x000000000C610000-0x000000000C611000-memory.dmp

        memory/1156-209-0x0000000001400000-0x0000000002400000-memory.dmp

        memory/1156-213-0x000000000CC20000-0x000000000CC21000-memory.dmp

        memory/4412-154-0x0000000073990000-0x0000000073CC5000-memory.dmp

        memory/4412-151-0x0000000073990000-0x0000000073CC5000-memory.dmp

        memory/4412-152-0x0000000073990000-0x0000000073CC5000-memory.dmp

        memory/4412-153-0x0000000073990000-0x0000000073CC5000-memory.dmp

        memory/4412-156-0x0000000073990000-0x0000000073CC5000-memory.dmp

        memory/4412-155-0x0000000073990000-0x0000000073CC5000-memory.dmp