Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    13-11-2024 01:03

General

  • Target

    c49a6d6259d7090608badcb4853eefb1be958577dc417ec124fa313c71f8c77fN.exe

  • Size

    9.4MB

  • MD5

    c783a3b20315ef5554b629946af2e450

  • SHA1

    d48a797b6186b0bda4bf4ba4b4981b8ebea17e07

  • SHA256

    c49a6d6259d7090608badcb4853eefb1be958577dc417ec124fa313c71f8c77f

  • SHA512

    332d04fa682e7b12d3d2df697fa9e2209ff0dffa99535d2860c87cb38d4c6598a16ab75bdba31fbc07b8b2b160145bbc2fb75327264c25b6074e66bcc301fbb0

  • SSDEEP

    6144:tSK/ymZ3ctTWQHf5ctj8jRi2WGKMSVT86JQPDHDdx/Qtqp:ue0TlHf55RShPJQPDHvd

Malware Config

Signatures

  • Modifies WinLogon for persistence 2 TTPs 3 IoCs
  • UAC bypass 3 TTPs 12 IoCs
  • Adds policy Run key to start application 2 TTPs 29 IoCs
  • Disables RegEdit via registry modification 6 IoCs
  • Executes dropped EXE 2 IoCs
  • Impair Defenses: Safe Mode Boot 1 TTPs 3 IoCs
  • Loads dropped DLL 4 IoCs
  • Adds Run key to start application 2 TTPs 64 IoCs
  • Checks whether UAC is enabled 1 TTPs 6 IoCs
  • Hijack Execution Flow: Executable Installer File Permissions Weakness 1 TTPs 3 IoCs

    Possible Turn off User Account Control's privilege elevation for standard users.

  • Looks up external IP address via web service 4 IoCs

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

  • Drops file in System32 directory 4 IoCs
  • Drops file in Program Files directory 4 IoCs
  • Drops file in Windows directory 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs
  • System policy modification 1 TTPs 36 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c49a6d6259d7090608badcb4853eefb1be958577dc417ec124fa313c71f8c77fN.exe
    "C:\Users\Admin\AppData\Local\Temp\c49a6d6259d7090608badcb4853eefb1be958577dc417ec124fa313c71f8c77fN.exe"
    1⤵
    • Modifies WinLogon for persistence
    • UAC bypass
    • Adds policy Run key to start application
    • Disables RegEdit via registry modification
    • Loads dropped DLL
    • Adds Run key to start application
    • Checks whether UAC is enabled
    • Hijack Execution Flow: Executable Installer File Permissions Weakness
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    • System policy modification
    PID:1740
    • C:\Users\Admin\AppData\Local\Temp\nryzjt.exe
      "C:\Users\Admin\AppData\Local\Temp\nryzjt.exe" "-"
      2⤵
      • Modifies WinLogon for persistence
      • UAC bypass
      • Adds policy Run key to start application
      • Disables RegEdit via registry modification
      • Executes dropped EXE
      • Impair Defenses: Safe Mode Boot
      • Adds Run key to start application
      • Checks whether UAC is enabled
      • Hijack Execution Flow: Executable Installer File Permissions Weakness
      • Drops file in System32 directory
      • Drops file in Program Files directory
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • System policy modification
      PID:1168
    • C:\Users\Admin\AppData\Local\Temp\nryzjt.exe
      "C:\Users\Admin\AppData\Local\Temp\nryzjt.exe" "-"
      2⤵
      • Modifies WinLogon for persistence
      • UAC bypass
      • Adds policy Run key to start application
      • Disables RegEdit via registry modification
      • Executes dropped EXE
      • Adds Run key to start application
      • Checks whether UAC is enabled
      • Hijack Execution Flow: Executable Installer File Permissions Weakness
      • System Location Discovery: System Language Discovery
      • System policy modification
      PID:2572

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Program Files (x86)\mnrpwdaaijbdhytggqoptryfc.kld

    Filesize

    272B

    MD5

    c82ce69b1117a880fba4382db2735d7e

    SHA1

    96dbab6a6b8f8c58ccbf27d5bd99b734cabe5058

    SHA256

    49d16449c0ad145197076195ef81198b200499feb262562d46b6ca130ccd965a

    SHA512

    32e179844c30159d08a9223262734a14022e5acf5306640bbf0914a06d444dc93d5a5de138ecb1324e2160237e5ba4fb2f55b43852cbfcb158c56c9e8248610d

  • C:\Program Files (x86)\mnrpwdaaijbdhytggqoptryfc.kld

    Filesize

    272B

    MD5

    0d6989d87595f517da6abc50f84a845c

    SHA1

    39a2c635c30afd8b6d178cbff89c66b15f071708

    SHA256

    a64aca9848eae61af5cda9dd378ea4bd8f1754c3ac5360a40f6a5a5feb713855

    SHA512

    3fdb22d7752e42bf87d842832e8d90e2dfa78194a1c67d579e93a70ad6a8a884ba8c72a3ee9cd9cdc14eda9eda62bfbdb3a9043dc78ffc0e3bd1bfe013a88ddc

  • C:\Program Files (x86)\mnrpwdaaijbdhytggqoptryfc.kld

    Filesize

    272B

    MD5

    83483c53fdeab8632194a8a26f4f3e07

    SHA1

    dc501dc0f9a988d2795bb7a3a2b11c2bee48bbb3

    SHA256

    4625b22153da5543b99b5ee91b7e87683d89d03058f596f5f90bbecf809e0cd7

    SHA512

    95eebdc83b6fe603881b28f26585a7a9f0c88c7c71a267ee5443f8c2e42a13efdc6403e8f97a6c8a7ebff43f1ebdbe674197be29004af290afcc352aef6fac2d

  • C:\Program Files (x86)\mnrpwdaaijbdhytggqoptryfc.kld

    Filesize

    272B

    MD5

    efc7780f1415edbc86ee75d9e29ac464

    SHA1

    a67f3415d8639c597a6da17bfb4796e341a7f2d2

    SHA256

    ff0c45ac4c4449dc90d2ec6544f437025108bf6e364efcf8f12a46fd8bffeb44

    SHA512

    6f356222eee92f88146a908ac30e404a94c3a4654bea233f541f2161af4778172277476bfb15ac1e0470a4df189a17fe69c29c6644a9523cab9765fbdd86982a

  • C:\Program Files (x86)\mnrpwdaaijbdhytggqoptryfc.kld

    Filesize

    272B

    MD5

    8bcd36f237932d771f9800c1a3a88497

    SHA1

    da403f4bf632ab69c1aaf499636a3cfd65dc99af

    SHA256

    15093a18785e9222ad32e1af42e82f5d9d86da01db0f8fff71e70ed76023380f

    SHA512

    a1a163c22c17c8167eb07eb6a53edfb1742b577a878c35df82d8d884ce0ba1fa6fb62301f321c8e13231f8b61b25443fc1b2cdf76a2413125c11339ec6b16b63

  • C:\Program Files (x86)\mnrpwdaaijbdhytggqoptryfc.kld

    Filesize

    272B

    MD5

    6bae365319aa167e4e8750b6b3f087f0

    SHA1

    82e045c6b817e3e4b189e89e1f869e11a78a77b7

    SHA256

    7ffd37c1028cea44621d83cd6e87171be5876149267a28103ec19d5b976dd0f5

    SHA512

    50ed0d88645df4dc50e03237217ed943cd999ebe3420d5ed1334f3a1de9a660d5b92696eca77120e2c61d0b5bc59ab9e172bddc861cf708846c6b62328b44eb2

  • C:\Users\Admin\AppData\Local\mnrpwdaaijbdhytggqoptryfc.kld

    Filesize

    272B

    MD5

    370a1cd8ca098c91545f46e2aeb4ab50

    SHA1

    053d1733c9ad9fcac3b660e6ff4ef1f4fe24439b

    SHA256

    7a46351053ae8fcce49507e0407565209c5213892222b9734a2de4603c44f44b

    SHA512

    9e7d6f9bcabd26f827ac0e87782a8942fc2cbf02abd3b026ac10e105520e1efbb3b38847edecb0813886f7e2bf67bc173bef576898894b3f67a87e3cf6564748

  • C:\Users\Admin\AppData\Local\mnrpwdaaijbdhytggqoptryfc.kld

    Filesize

    272B

    MD5

    95060dfa7df1388e6c77ec3716e1f273

    SHA1

    d379e7eee8bed2f2bf3c773a9370ba1a1fe82715

    SHA256

    09f1ab13d8d7c41106ed6bc44096b4ba586b121b749219d1fa53c13b74a29869

    SHA512

    a8d08fc907a6721e0ddcf299be25b89e1218572343fd7a096a6cc45b8e01ef939573441f07fd1e4a52662c253923ecaf3cb5d6608caa82d8ed15cc6fc10faf4a

  • C:\Users\Admin\AppData\Local\rdsbtltexjmzoqwufajvktldlwpbergiomxs.ncl

    Filesize

    3KB

    MD5

    9e4959c191cc21500917d94bfa0dd2a3

    SHA1

    6e6cd855a9a43195d9ea66555019e50e6d14d768

    SHA256

    bb4a7aa598ffdc5646801abfd50ad116ccf84be956819b42fad3d518386a68b9

    SHA512

    de98cdb9c524545bce498719a8bfd935e3c241d896305229e62582470eba729009da01c55c4a657cdb1710c68a71251b2fc83eb58b39dd1a6aa872d31bb306af

  • \Users\Admin\AppData\Local\Temp\nryzjt.exe

    Filesize

    11.5MB

    MD5

    92f233373fbfaa8e15529c0f0defabbd

    SHA1

    b5b829da61c59d468b1667548e4a37aecff5d608

    SHA256

    04783e2335d9891f0a78cb79a6b22472bc965a9358d574d369f1b2bc8cd1220a

    SHA512

    8cad0c2c3d2154e7481d729ff5adb3639bded42cf221d342d86f3ef4fd9f46be50ae116cda226d396060a2c611187b9e906f761524564b7656c72507c783b7b4