Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06-12-2024 08:51

General

  • Target

    scan_241205-801_draft_PO.exe

  • Size

    1.2MB

  • MD5

    16df1bbb45f31ef099862d1df04b9741

  • SHA1

    e9c1056bc30a3817d84656a944b39190cbb1b7c9

  • SHA256

    b5486818c1913895b913ace02e94fee62a6468b3df96abd6c75c863499873dd2

  • SHA512

    083ed41b277bfdaa0876c756868acb0286d22eb498aa4f18638a258a86559ddc6bce35d777b259f71b7d392291d5ee0ad346671931c562c89bafc4c555d877cb

  • SSDEEP

    24576:tmwFwYo/knJ5vkeSTejf+WNvXgd93W0wbenPc15QClzZ:gkVosnJSeSTw+WNfgdlZ0iPc/Q+zZ

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

  • Guloader family
  • Guloader,Cloudeye

    A shellcode based downloader first seen in 2020.

  • 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 2 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
  • Drops file in Windows directory 2 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 6 IoCs
  • Suspicious behavior: MapViewOfSection 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\scan_241205-801_draft_PO.exe
    "C:\Users\Admin\AppData\Local\Temp\scan_241205-801_draft_PO.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:2336
    • C:\Users\Admin\AppData\Local\Temp\scan_241205-801_draft_PO.exe
      "C:\Users\Admin\AppData\Local\Temp\scan_241205-801_draft_PO.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:1204
      • C:\Users\Admin\AppData\Local\Temp\scan_241205-801_draft_PO.exe
        C:\Users\Admin\AppData\Local\Temp\scan_241205-801_draft_PO.exe /stext "C:\Users\Admin\AppData\Local\Temp\ugtpqiiaaphagpzktwfcitajiqbswtv"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        PID:3680
      • C:\Users\Admin\AppData\Local\Temp\scan_241205-801_draft_PO.exe
        C:\Users\Admin\AppData\Local\Temp\scan_241205-801_draft_PO.exe /stext "C:\Users\Admin\AppData\Local\Temp\eayirbbtoxzfrvvwlhzelgvsjxkbpdufca"
        3⤵
        • Accesses Microsoft Outlook accounts
        • System Location Discovery: System Language Discovery
        PID:3484
      • C:\Users\Admin\AppData\Local\Temp\scan_241205-801_draft_PO.exe
        C:\Users\Admin\AppData\Local\Temp\scan_241205-801_draft_PO.exe /stext "C:\Users\Admin\AppData\Local\Temp\gdlastm"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1952

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\ProgramData\remcos\logs.dat

    Filesize

    144B

    MD5

    55309383c5f2ce3f85f143f6c15581c5

    SHA1

    02f91749fe55bfd6f3fdd9c096b4b776971fd4f0

    SHA256

    473f2bae6ec5b11618d132b7b9d870421594142730d6846b20b276e92698b109

    SHA512

    3500cbaa12b3b2e49ed6f223a677d02d59d2cf6ba33e2fd1540e87213e792d670f1e97ad4765cd4f43fba36ebc871c3c9ee5ac8bbd233efd88e284272a37782b

  • C:\Users\Admin\AppData\Local\Temp\nsj1AD3.tmp\System.dll

    Filesize

    11KB

    MD5

    75ed96254fbf894e42058062b4b4f0d1

    SHA1

    996503f1383b49021eb3427bc28d13b5bbd11977

    SHA256

    a632d74332b3f08f834c732a103dafeb09a540823a2217ca7f49159755e8f1d7

    SHA512

    58174896db81d481947b8745dafe3a02c150f3938bb4543256e8cce1145154e016d481df9fe68dac6d48407c62cbe20753320ebd5fe5e84806d07ce78e0eb0c4

  • C:\Users\Admin\AppData\Local\Temp\nsk1BC1.tmp

    Filesize

    12B

    MD5

    c69f9017146365e0214351f8fe3c5837

    SHA1

    1653405a133cee32745a9a2bffaeca4429d95532

    SHA256

    e7137bbf941ddb679efbbb3043769122f659a0932d056894f411b734fb1ffddd

    SHA512

    fa5a9dad8862c6614fd148c9800f3aec0b2a842f1f3ee47f22bbc426133bd7659bdb2cfac45d25288ea6a4c4f1b29163b8ae764c0d15c008935a7b9606c67977

  • C:\Users\Admin\AppData\Local\Temp\nsp1B43.tmp

    Filesize

    1B

    MD5

    8ce4b16b22b58894aa86c421e8759df3

    SHA1

    13fbd79c3d390e5d6585a21e11ff5ec1970cff0c

    SHA256

    8254c329a92850f6d539dd376f4816ee2764517da5e0235514af433164480d7a

    SHA512

    2af8a9104b3f64ed640d8c7e298d2d480f03a3610cbc2b33474321ec59024a48592ea8545e41e09d5d1108759df48ede0054f225df39d4f0f312450e0aa9dd25

  • C:\Users\Admin\AppData\Local\Temp\nsp1B43.tmp

    Filesize

    2B

    MD5

    25bc6654798eb508fa0b6343212a74fe

    SHA1

    15d5e1d3b948fd5986aaff7d9419b5e52c75fc93

    SHA256

    8e5202705183bd3a20a29e224499b0f77a8273ee33cd93cca71043c57ad4bdfc

    SHA512

    5868c6241ed3cfcc5c34bfe42e4b9f5c69e74975e524771d8c9f35cafc13fd01cd943ec4d8caefee79a1f4a457e69d20b7a86f88db83a5bc3e6bd8a619972898

  • C:\Users\Admin\AppData\Local\Temp\nsp1B43.tmp

    Filesize

    3B

    MD5

    4e27f2226785e9abbe046fc592668860

    SHA1

    28b18a7f383131df509f7191f946a32c5a2e410c

    SHA256

    01a219245e1501fee01ce0baea8f6065ce5162cea12fa570689a07c9717be81d

    SHA512

    2a23585835bdb5db8175cab265566042282841efdcee8aaba8b9b5d466b0f165c0c5973033ce94bb9a8f07a956689247981ea07ac5a51408263e1653d9710adb

  • C:\Users\Admin\AppData\Local\Temp\nsp1B43.tmp

    Filesize

    4B

    MD5

    cde63b34c142af0a38cbe83791c964f8

    SHA1

    ece2b194b486118b40ad12c1f0e9425dd0672424

    SHA256

    65e2d70166c9a802b7ad2a87129b8945f083e5f268878790a9d1f1c03f47938d

    SHA512

    0559d3d34ad64ccc27e685431c24fc6ead0f645db14fa0e125a64fb67dbd158c15432c1fc5407811aac8a3486090dfbcfcbc3c6bf5aa0ec73f979ef62d14853c

  • C:\Users\Admin\AppData\Local\Temp\nsp1B43.tmp

    Filesize

    5B

    MD5

    e2fecc970546c3418917879fe354826c

    SHA1

    63f1c1dd01b87704a6b6c99fd9f141e0a3064f16

    SHA256

    ff91566d755f5d038ae698a2cc0a7d4d14e5273afafc37b6f03afda163768fa0

    SHA512

    3c4a68cbaee94f986515f43305a0e7620c14c30213d4a17db4a3e8a1b996764eb688bf733f472fc52073c2c80bb5229bb29411d7601aefe1c4370e230c341a0a

  • C:\Users\Admin\AppData\Local\Temp\nsp1B43.tmp

    Filesize

    6B

    MD5

    50484c19f1afdaf3841a0d821ed393d2

    SHA1

    c65a0fb7e74ffd2c9fc3a0f9aacb0f6a24b0a68b

    SHA256

    6923dd1bc0460082c5d55a831908c24a282860b7f1cd6c2b79cf1bc8857c639c

    SHA512

    d51a20d67571fe70bcd6c36e1382a3c342f42671c710090b75fcfc2405ce24488e03a7131eefe4751d0bd3aeaad816605ad10c8e3258d72fcf379e32416cbf3b

  • C:\Users\Admin\AppData\Local\Temp\nsp1B43.tmp

    Filesize

    7B

    MD5

    67cfa7364c4cf265b047d87ff2e673ae

    SHA1

    56e27889277981a9b63fcf5b218744a125bbc2fa

    SHA256

    639b68bd180b47d542dd001d03557ee2d5b3065c3c783143bc9fb548f3fd7713

    SHA512

    17f28a136b20b89e9c3a418b08fd8e6fcaac960872dc33b2481af2d872efc44228f420759c57724f5d953c7ba98f2283e2acc7dfe5a58cbf719c6480ec7a648b

  • C:\Users\Admin\AppData\Local\Temp\nsp1B43.tmp

    Filesize

    8B

    MD5

    c3cb69218b85c3260387fb582cb518dd

    SHA1

    961c892ded09a4cbb5392097bb845ccba65902ad

    SHA256

    1c329924865741e0222d3ead23072cfbed14f96e2b0432573068eb0640513101

    SHA512

    2402fffeb89c531db742bf6f5466eee8fe13edf97b8ecfc2cace3522806b322924d1ca81dda25e59b4047b8f40ad11ae9216e0a0d5c7fc6beef4368eb9551422

  • C:\Users\Admin\AppData\Local\Temp\nsp1B43.tmp

    Filesize

    10B

    MD5

    9a53fc1d7126c5e7c81bb5c15b15537b

    SHA1

    e2d13e0fa37de4c98f30c728210d6afafbb2b000

    SHA256

    a7de06c22e4e67908840ec3f00ab8fe9e04ae94fb16a74136002afbaf607ff92

    SHA512

    b0bffbb8072dbdcfc68f0e632f727c08fe3ef936b2ef332c08486553ff2cef7b0bcdb400e421a117e977bb0fac17ce4706a8097e32d558a918433646b6d5f1a1

  • C:\Users\Admin\AppData\Local\Temp\nsp1B43.tmp

    Filesize

    60B

    MD5

    8566807b0dbb1131e5c9cd4ca8dc90b2

    SHA1

    d8279adfb8b6794f092dc5145f1f818d2207eace

    SHA256

    65b6950878c1c94ef6d82733bfa7c16d36f614c7e7145591cb2b69cc5f41059b

    SHA512

    4492066dc6e21934768fd8ac977e0ecfdf6e9b16799c6f312835591da5ebec780bac1cb072289acd6d75a9833963c044572139ad026382862b83bb6fb3f87a43

  • C:\Users\Admin\AppData\Local\Temp\nsp1C2F.tmp

    Filesize

    13B

    MD5

    f6dd1b23c7a68545a2c2dbf678cf8683

    SHA1

    43eeed66236b1b5868671abdc138051daa64fd16

    SHA256

    38e0646749072dd0bfa54e9cc2884b454d7ea22b08d816599d86f7f162e1c7e8

    SHA512

    a23ad3fc2ca9259a0641bc445eb71848c5e824694f844dea4d35d985aa65fa6a882af3d4f873042df9da564e0ec4afd0ad2bc6911c00a70f9e82171d53fb76d2

  • C:\Users\Admin\AppData\Local\Temp\nsp1C2F.tmp

    Filesize

    16B

    MD5

    ebceb0a1fed026e3e34e7b8da2d4a813

    SHA1

    792fda9449b9d86f592c58b90ac24df15db59e45

    SHA256

    36be9a2540809bed9173f5517226ee7301996dbd5a7b07451a512a0e2ceccc8c

    SHA512

    cd3534dfb1ea2f0cf392304bcb36ecfb3a4e4125162973974ff9ec4e52c5d0940a734b18f592f7e81459afc2b6e35452163f7068267fc957c4c09894f45f969a

  • C:\Users\Admin\AppData\Local\Temp\nsp1C2F.tmp

    Filesize

    30B

    MD5

    f15bfdebb2df02d02c8491bde1b4e9bd

    SHA1

    93bd46f57c3316c27cad2605ddf81d6c0bde9301

    SHA256

    c87f2ff45bb530577fb8856df1760edaf1060ae4ee2934b17fdd21b7d116f043

    SHA512

    1757ed4ae4d47d0c839511c18be5d75796224d4a3049e2d8853650ace2c5057c42040de6450bf90dd4969862e9ebb420cd8a34f8dd9c970779ed2e5459e8f2f1

  • C:\Users\Admin\AppData\Local\Temp\nsz1A46.tmp

    Filesize

    45B

    MD5

    5bc80a3e025e6d7c0ff9536d7af1c8b1

    SHA1

    c7dca5ef716161e30829bcfe28b59ec430fdbec0

    SHA256

    8d563467c54bb057b01f2366722a14e9416510bf4955afa746cbeb2f221312fc

    SHA512

    cca0649c6cc7a92de2c46bf64084bce5e0ce44ef5acbdcb7527231d5372d74b0a1b3d0856ecfa0d32a5a0fbf5219df8117b14bec29d513fb55da0d1f25a6ad8b

  • C:\Users\Admin\AppData\Local\Temp\nsz1AE4.tmp

    Filesize

    9B

    MD5

    2b3884fe02299c565e1c37ee7ef99293

    SHA1

    d8e2ef2a52083f6df210109fea53860ea227af9c

    SHA256

    ae789a65914ed002efb82dad89e5a4d4b9ec8e7faae30d0ed6e3c0d20f7d3858

    SHA512

    aeb9374a52d0ad99336bfd4ec7bb7c5437b827845b8784d9c21f7d96a931693604689f6adc3ca25fad132a0ad6123013211ff550f427fa86e4f26c122ac6a0fe

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

    Filesize

    4KB

    MD5

    7aca43b2800ceb18b3ed2326532545de

    SHA1

    d4cf207ef85bd749d59c1cb27a09c167ee21523a

    SHA256

    3d9f8622d97587fd84d3d0560a50ab38e5f894fe4b5bcaa34279643fdaaeb480

    SHA512

    0e002e6b8d965c227d9b1aa7c0251619c787ec7717e59667e756e5815e3666a955ea397eb148a1ed6bb7d8045727e4efa656a103f14bc70a03b03f0c91283c2f

  • memory/1204-585-0x0000000000850000-0x0000000001AA4000-memory.dmp

    Filesize

    18.3MB

  • memory/1204-601-0x0000000077B21000-0x0000000077C41000-memory.dmp

    Filesize

    1.1MB

  • memory/1204-581-0x0000000001AB0000-0x00000000031EF000-memory.dmp

    Filesize

    23.2MB

  • memory/1204-582-0x0000000077BA8000-0x0000000077BA9000-memory.dmp

    Filesize

    4KB

  • memory/1204-583-0x0000000077BC5000-0x0000000077BC6000-memory.dmp

    Filesize

    4KB

  • memory/1204-617-0x00000000341E0000-0x00000000341F9000-memory.dmp

    Filesize

    100KB

  • memory/1204-588-0x0000000001AB0000-0x00000000031EF000-memory.dmp

    Filesize

    23.2MB

  • memory/1204-620-0x00000000341E0000-0x00000000341F9000-memory.dmp

    Filesize

    100KB

  • memory/1204-616-0x0000000000850000-0x0000000001AA4000-memory.dmp

    Filesize

    18.3MB

  • memory/1204-627-0x0000000000850000-0x0000000001AA4000-memory.dmp

    Filesize

    18.3MB

  • memory/1204-624-0x0000000000850000-0x0000000001AA4000-memory.dmp

    Filesize

    18.3MB

  • memory/1204-621-0x00000000341E0000-0x00000000341F9000-memory.dmp

    Filesize

    100KB

  • memory/1952-608-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/1952-602-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/1952-596-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/1952-595-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/1952-594-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/2336-580-0x0000000006530000-0x0000000007C6F000-memory.dmp

    Filesize

    23.2MB

  • memory/2336-577-0x0000000006530000-0x0000000007C6F000-memory.dmp

    Filesize

    23.2MB

  • memory/2336-579-0x0000000074774000-0x0000000074775000-memory.dmp

    Filesize

    4KB

  • memory/2336-578-0x0000000077B21000-0x0000000077C41000-memory.dmp

    Filesize

    1.1MB

  • memory/3484-597-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/3484-592-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/3484-599-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/3484-604-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/3680-613-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/3680-598-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/3680-605-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/3680-591-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB