Analysis

  • max time kernel
    147s
  • max time network
    142s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    17-12-2024 17:58

General

  • Target

    530d877fd245da9636806e92b1b3271ccbdb89c4e08e534171469b70f2f7dc7a.exe

  • Size

    760KB

  • MD5

    20d75709d275ee9fc5b559e50ae667c3

  • SHA1

    27b41abb5cf6a0492fbd44db949ed78629548ee6

  • SHA256

    530d877fd245da9636806e92b1b3271ccbdb89c4e08e534171469b70f2f7dc7a

  • SHA512

    0987ce0ae8d3447034f76b11ab618b8b92f73d0e5ed50d2e5a0ba204f0a8cf830ed4795abbeebe72c035ecfa3e96391756cda8cb7f064f183cdb4554510be64f

  • SSDEEP

    12288:GtomEHbPc17d211S7nu/s6dSf/5vJ6UuWsz6MNwXLLKqKUGpjSvI0Z:TN7Pi7Iw1aSz6n16ewXLu9UKjSvI0Z

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

162.251.122.87:2404

Attributes
  • audio_folder

    MicRecords

  • audio_path

    ApplicationPath

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    remcos.exe

  • copy_folder

    Remcos

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    false

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-UOMZ21

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Remcos

    Remcos is a closed-source remote control and surveillance software.

  • Remcos family
  • Detected Nirsoft tools 7 IoCs

    Free utilities often used by attackers which can steal passwords, product keys, etc.

  • NirSoft MailPassView 2 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 3 IoCs

    Password recovery tool for various web browsers

  • Loads dropped DLL 2 IoCs
  • Reads user/profile data of web browsers 3 TTPs

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

  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • Suspicious use of SetThreadContext 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 5 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: MapViewOfSection 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 18 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\530d877fd245da9636806e92b1b3271ccbdb89c4e08e534171469b70f2f7dc7a.exe
    "C:\Users\Admin\AppData\Local\Temp\530d877fd245da9636806e92b1b3271ccbdb89c4e08e534171469b70f2f7dc7a.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:2336
    • C:\Users\Admin\AppData\Local\Temp\530d877fd245da9636806e92b1b3271ccbdb89c4e08e534171469b70f2f7dc7a.exe
      "C:\Users\Admin\AppData\Local\Temp\530d877fd245da9636806e92b1b3271ccbdb89c4e08e534171469b70f2f7dc7a.exe"
      2⤵
      • Suspicious use of NtCreateThreadExHideFromDebugger
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2128
      • C:\Users\Admin\AppData\Local\Temp\530d877fd245da9636806e92b1b3271ccbdb89c4e08e534171469b70f2f7dc7a.exe
        C:\Users\Admin\AppData\Local\Temp\530d877fd245da9636806e92b1b3271ccbdb89c4e08e534171469b70f2f7dc7a.exe /stext "C:\Users\Admin\AppData\Local\Temp\nhdjmkl"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        PID:2300
      • C:\Users\Admin\AppData\Local\Temp\530d877fd245da9636806e92b1b3271ccbdb89c4e08e534171469b70f2f7dc7a.exe
        C:\Users\Admin\AppData\Local\Temp\530d877fd245da9636806e92b1b3271ccbdb89c4e08e534171469b70f2f7dc7a.exe /stext "C:\Users\Admin\AppData\Local\Temp\qjjbnuwklck"
        3⤵
        • Accesses Microsoft Outlook accounts
        • System Location Discovery: System Language Discovery
        PID:2504
      • C:\Users\Admin\AppData\Local\Temp\530d877fd245da9636806e92b1b3271ccbdb89c4e08e534171469b70f2f7dc7a.exe
        C:\Users\Admin\AppData\Local\Temp\530d877fd245da9636806e92b1b3271ccbdb89c4e08e534171469b70f2f7dc7a.exe /stext "C:\Users\Admin\AppData\Local\Temp\adwunnhezkcwty"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of AdjustPrivilegeToken
        PID:2408

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\ProgramData\remcos\logs.dat

    Filesize

    144B

    MD5

    12ea26a23e04b37af265e81bac9d6b40

    SHA1

    48b9de0eb9bc7a5b54286259789168c4fdb44378

    SHA256

    a23fac24cd0f0bd67941cba6451920b7c62f3e123ffdca86181e5161d8544364

    SHA512

    be9a6b492c3dd5f81ced2621dccac89dd876a9dbc04e1c5004ec76473dfe48cccf863664a79e45a23680f4087dc8db22704b6081220d3d1f7ddf3cd802c2e7aa

  • C:\Users\Admin\AppData\Local\Temp\nhdjmkl

    Filesize

    2B

    MD5

    f3b25701fe362ec84616a93a45ce9998

    SHA1

    d62636d8caec13f04e28442a0a6fa1afeb024bbb

    SHA256

    b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

    SHA512

    98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

  • C:\Users\Admin\AppData\Local\Temp\nsoEDDD.tmp

    Filesize

    1B

    MD5

    8ce4b16b22b58894aa86c421e8759df3

    SHA1

    13fbd79c3d390e5d6585a21e11ff5ec1970cff0c

    SHA256

    8254c329a92850f6d539dd376f4816ee2764517da5e0235514af433164480d7a

    SHA512

    2af8a9104b3f64ed640d8c7e298d2d480f03a3610cbc2b33474321ec59024a48592ea8545e41e09d5d1108759df48ede0054f225df39d4f0f312450e0aa9dd25

  • C:\Users\Admin\AppData\Local\Temp\nsoEDDD.tmp

    Filesize

    2B

    MD5

    25bc6654798eb508fa0b6343212a74fe

    SHA1

    15d5e1d3b948fd5986aaff7d9419b5e52c75fc93

    SHA256

    8e5202705183bd3a20a29e224499b0f77a8273ee33cd93cca71043c57ad4bdfc

    SHA512

    5868c6241ed3cfcc5c34bfe42e4b9f5c69e74975e524771d8c9f35cafc13fd01cd943ec4d8caefee79a1f4a457e69d20b7a86f88db83a5bc3e6bd8a619972898

  • C:\Users\Admin\AppData\Local\Temp\nsoEDDD.tmp

    Filesize

    3B

    MD5

    4e27f2226785e9abbe046fc592668860

    SHA1

    28b18a7f383131df509f7191f946a32c5a2e410c

    SHA256

    01a219245e1501fee01ce0baea8f6065ce5162cea12fa570689a07c9717be81d

    SHA512

    2a23585835bdb5db8175cab265566042282841efdcee8aaba8b9b5d466b0f165c0c5973033ce94bb9a8f07a956689247981ea07ac5a51408263e1653d9710adb

  • C:\Users\Admin\AppData\Local\Temp\nsoEDDD.tmp

    Filesize

    4B

    MD5

    cde63b34c142af0a38cbe83791c964f8

    SHA1

    ece2b194b486118b40ad12c1f0e9425dd0672424

    SHA256

    65e2d70166c9a802b7ad2a87129b8945f083e5f268878790a9d1f1c03f47938d

    SHA512

    0559d3d34ad64ccc27e685431c24fc6ead0f645db14fa0e125a64fb67dbd158c15432c1fc5407811aac8a3486090dfbcfcbc3c6bf5aa0ec73f979ef62d14853c

  • C:\Users\Admin\AppData\Local\Temp\nsoEDDD.tmp

    Filesize

    5B

    MD5

    e2fecc970546c3418917879fe354826c

    SHA1

    63f1c1dd01b87704a6b6c99fd9f141e0a3064f16

    SHA256

    ff91566d755f5d038ae698a2cc0a7d4d14e5273afafc37b6f03afda163768fa0

    SHA512

    3c4a68cbaee94f986515f43305a0e7620c14c30213d4a17db4a3e8a1b996764eb688bf733f472fc52073c2c80bb5229bb29411d7601aefe1c4370e230c341a0a

  • C:\Users\Admin\AppData\Local\Temp\nsoEDDD.tmp

    Filesize

    6B

    MD5

    50484c19f1afdaf3841a0d821ed393d2

    SHA1

    c65a0fb7e74ffd2c9fc3a0f9aacb0f6a24b0a68b

    SHA256

    6923dd1bc0460082c5d55a831908c24a282860b7f1cd6c2b79cf1bc8857c639c

    SHA512

    d51a20d67571fe70bcd6c36e1382a3c342f42671c710090b75fcfc2405ce24488e03a7131eefe4751d0bd3aeaad816605ad10c8e3258d72fcf379e32416cbf3b

  • C:\Users\Admin\AppData\Local\Temp\nsoEDDD.tmp

    Filesize

    7B

    MD5

    67cfa7364c4cf265b047d87ff2e673ae

    SHA1

    56e27889277981a9b63fcf5b218744a125bbc2fa

    SHA256

    639b68bd180b47d542dd001d03557ee2d5b3065c3c783143bc9fb548f3fd7713

    SHA512

    17f28a136b20b89e9c3a418b08fd8e6fcaac960872dc33b2481af2d872efc44228f420759c57724f5d953c7ba98f2283e2acc7dfe5a58cbf719c6480ec7a648b

  • C:\Users\Admin\AppData\Local\Temp\nsoEDDD.tmp

    Filesize

    8B

    MD5

    c3cb69218b85c3260387fb582cb518dd

    SHA1

    961c892ded09a4cbb5392097bb845ccba65902ad

    SHA256

    1c329924865741e0222d3ead23072cfbed14f96e2b0432573068eb0640513101

    SHA512

    2402fffeb89c531db742bf6f5466eee8fe13edf97b8ecfc2cace3522806b322924d1ca81dda25e59b4047b8f40ad11ae9216e0a0d5c7fc6beef4368eb9551422

  • C:\Users\Admin\AppData\Local\Temp\nsoEDDD.tmp

    Filesize

    9B

    MD5

    2b3884fe02299c565e1c37ee7ef99293

    SHA1

    d8e2ef2a52083f6df210109fea53860ea227af9c

    SHA256

    ae789a65914ed002efb82dad89e5a4d4b9ec8e7faae30d0ed6e3c0d20f7d3858

    SHA512

    aeb9374a52d0ad99336bfd4ec7bb7c5437b827845b8784d9c21f7d96a931693604689f6adc3ca25fad132a0ad6123013211ff550f427fa86e4f26c122ac6a0fe

  • C:\Users\Admin\AppData\Local\Temp\nsoEDDD.tmp

    Filesize

    10B

    MD5

    9a53fc1d7126c5e7c81bb5c15b15537b

    SHA1

    e2d13e0fa37de4c98f30c728210d6afafbb2b000

    SHA256

    a7de06c22e4e67908840ec3f00ab8fe9e04ae94fb16a74136002afbaf607ff92

    SHA512

    b0bffbb8072dbdcfc68f0e632f727c08fe3ef936b2ef332c08486553ff2cef7b0bcdb400e421a117e977bb0fac17ce4706a8097e32d558a918433646b6d5f1a1

  • \Users\Admin\AppData\Local\Temp\nsjECD2.tmp\System.dll

    Filesize

    11KB

    MD5

    ca332bb753b0775d5e806e236ddcec55

    SHA1

    f35ef76592f20850baef2ebbd3c9a2cfb5ad8d8f

    SHA256

    df5ae79fa558dc7af244ec6e53939563b966e7dbd8867e114e928678dbd56e5d

    SHA512

    2de0956a1ad58ad7086e427e89b819089f2a7f1e4133ed2a0a736adc0614e8588ebe2d97f1b59ab8886d662aeb40e0b4838c6a65fbfc652253e3a45664a03a00

  • memory/2128-580-0x0000000000480000-0x00000000014E2000-memory.dmp

    Filesize

    16.4MB

  • memory/2128-634-0x0000000000480000-0x00000000014E2000-memory.dmp

    Filesize

    16.4MB

  • memory/2128-583-0x0000000000480000-0x00000000014E2000-memory.dmp

    Filesize

    16.4MB

  • memory/2128-622-0x0000000000480000-0x00000000014E2000-memory.dmp

    Filesize

    16.4MB

  • memory/2128-643-0x0000000000480000-0x00000000014E2000-memory.dmp

    Filesize

    16.4MB

  • memory/2128-640-0x0000000000480000-0x00000000014E2000-memory.dmp

    Filesize

    16.4MB

  • memory/2128-637-0x0000000000480000-0x00000000014E2000-memory.dmp

    Filesize

    16.4MB

  • memory/2128-579-0x0000000077220000-0x00000000773C9000-memory.dmp

    Filesize

    1.7MB

  • memory/2128-631-0x0000000000480000-0x00000000014E2000-memory.dmp

    Filesize

    16.4MB

  • memory/2128-628-0x0000000000480000-0x00000000014E2000-memory.dmp

    Filesize

    16.4MB

  • memory/2128-615-0x0000000038070000-0x0000000038089000-memory.dmp

    Filesize

    100KB

  • memory/2128-612-0x0000000038070000-0x0000000038089000-memory.dmp

    Filesize

    100KB

  • memory/2128-625-0x0000000000480000-0x00000000014E2000-memory.dmp

    Filesize

    16.4MB

  • memory/2128-616-0x0000000038070000-0x0000000038089000-memory.dmp

    Filesize

    100KB

  • memory/2128-611-0x0000000000480000-0x00000000014E2000-memory.dmp

    Filesize

    16.4MB

  • memory/2128-646-0x0000000000480000-0x00000000014E2000-memory.dmp

    Filesize

    16.4MB

  • memory/2300-588-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/2300-608-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/2300-592-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/2300-593-0x0000000077220000-0x00000000773C9000-memory.dmp

    Filesize

    1.7MB

  • memory/2300-589-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/2300-590-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/2336-577-0x0000000077221000-0x0000000077322000-memory.dmp

    Filesize

    1.0MB

  • memory/2336-578-0x0000000077220000-0x00000000773C9000-memory.dmp

    Filesize

    1.7MB

  • memory/2408-600-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/2408-597-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/2408-598-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/2408-599-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/2504-620-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/2504-602-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/2504-594-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/2504-591-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/2504-595-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB