Analysis

  • max time kernel
    148s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231222-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31/01/2024, 09:43

General

  • Target

    84163f55a98e68a7e2cb11fe45ed507a.exe

  • Size

    312KB

  • MD5

    84163f55a98e68a7e2cb11fe45ed507a

  • SHA1

    b35d3f9852ebde4c7d030a9853121e2e930a7a42

  • SHA256

    2dd30e532f23c591e582f184dc59a2c9a0691bbfe10183af875c21313c44d436

  • SHA512

    b22c25ecd03d0c861016bfe75afcfbe46b43e5044d00bb65c384a321335a9ae353998ed3ad965dc1fe88d3324252723fce3b46892c71bb52e5910b597439cb13

  • SSDEEP

    6144:YG377xS2Vp2CeiorXhwTBN531pcCJJvHCC8oS:Dr7xS2Vp6FwT7bJJvHOoS

Malware Config

Signatures

  • ModiLoader, DBatLoader

    ModiLoader is a Delphi loader that misuses cloud services to download other malicious families.

  • UAC bypass 3 TTPs 1 IoCs
  • ModiLoader Second Stage 4 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 4 IoCs
  • UPX packed file 4 IoCs

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

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Checks whether UAC is enabled 1 TTPs 3 IoCs
  • Drops file in Windows directory 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs
  • System policy modification 1 TTPs 1 IoCs
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

Processes

  • C:\Users\Admin\AppData\Local\Temp\84163f55a98e68a7e2cb11fe45ed507a.exe
    "C:\Users\Admin\AppData\Local\Temp\84163f55a98e68a7e2cb11fe45ed507a.exe"
    1⤵
    • Checks computer location settings
    • Checks whether UAC is enabled
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3056
    • C:\Windows\mstwain32.exe
      "C:\Windows\mstwain32.exe" \melt "C:\Users\Admin\AppData\Local\Temp\84163f55a98e68a7e2cb11fe45ed507a.exe"
      2⤵
      • UAC bypass
      • Deletes itself
      • Executes dropped EXE
      • Loads dropped DLL
      • Adds Run key to start application
      • Checks whether UAC is enabled
      • Drops file in Windows directory
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • System policy modification
      PID:2304
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:4448

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\Windows\cmsetac.dll

          Filesize

          33KB

          MD5

          88f1291d20aa04766107260ca801b855

          SHA1

          879f99133249edc0e5d51ce13abae6e63fa75266

          SHA256

          e6c331208fd2946a2a073023724ea68b12b0048953413f320b3769372058a8fe

          SHA512

          85fa42f3c8f75df353c9541b7bbb0f94ba160248d347f3ecca61b7fa227b43a273f2459164b6dfd04147b74fe4af95c5fb9f546dc4c264d5039c91ef2820db37

        • C:\Windows\mstwain32.exe

          Filesize

          312KB

          MD5

          84163f55a98e68a7e2cb11fe45ed507a

          SHA1

          b35d3f9852ebde4c7d030a9853121e2e930a7a42

          SHA256

          2dd30e532f23c591e582f184dc59a2c9a0691bbfe10183af875c21313c44d436

          SHA512

          b22c25ecd03d0c861016bfe75afcfbe46b43e5044d00bb65c384a321335a9ae353998ed3ad965dc1fe88d3324252723fce3b46892c71bb52e5910b597439cb13

        • C:\Windows\ntdtcstp.dll

          Filesize

          7KB

          MD5

          67587e25a971a141628d7f07bd40ffa0

          SHA1

          76fcd014539a3bb247cc0b761225f68bd6055f6b

          SHA256

          e6829866322d68d5c5b78e3d48dcec70a41cdc42c6f357a44fd329f74a8b4378

          SHA512

          6e6de7aa02c48f8b96b06e5f1160fbc5c95312320636e138cc997ef3362a61bc50ec03db1f06292eb964cd71915ddb2ec2eb741432c7da44215a4acbb576a350

        • memory/2304-19-0x0000000000920000-0x0000000000921000-memory.dmp

          Filesize

          4KB

        • memory/2304-23-0x00000000028E0000-0x00000000028EE000-memory.dmp

          Filesize

          56KB

        • memory/2304-26-0x0000000002790000-0x0000000002791000-memory.dmp

          Filesize

          4KB

        • memory/2304-27-0x0000000000980000-0x0000000000988000-memory.dmp

          Filesize

          32KB

        • memory/2304-28-0x00000000028E0000-0x00000000028EE000-memory.dmp

          Filesize

          56KB

        • memory/2304-29-0x0000000000400000-0x0000000000450000-memory.dmp

          Filesize

          320KB

        • memory/3056-0-0x0000000000400000-0x0000000000450000-memory.dmp

          Filesize

          320KB

        • memory/3056-1-0x00000000020D0000-0x00000000020D1000-memory.dmp

          Filesize

          4KB

        • memory/3056-11-0x0000000000400000-0x0000000000450000-memory.dmp

          Filesize

          320KB