Analysis

  • max time kernel
    147s
  • max time network
    151s
  • platform
    windows7_x64
  • resource
    win7-20231023-en
  • resource tags

    arch:x64arch:x86image:win7-20231023-enlocale:en-usos:windows7-x64system
  • submitted
    06-12-2023 17:36

General

  • Target

    fc4fb593fdecc5e6c82c0c98decab2ccd213153078489787712a082c299d20cd.exe

  • Size

    1.0MB

  • MD5

    c200bdcd9c827ad9c878f61a6e80b2ee

  • SHA1

    730d6b83b8af8d7b6740020d0e44466c2192f6ee

  • SHA256

    fc4fb593fdecc5e6c82c0c98decab2ccd213153078489787712a082c299d20cd

  • SHA512

    a5dd81fe25aa643c94f5e098e17fc2ce9a929141ea3a470245986e3e5fb8d9da8c014f6649a70816f8d1338b043a09caea69193f627f8c1bf351becb8d76de43

  • SSDEEP

    24576:KgCKtD/61Idz9KOXdI0YBt68T1U3FMztS5aV3+2rN87:X6Kzj+0YBt68+3FMKaO2h87

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

107.175.229.139:8087

Attributes
  • audio_folder

    MicRecords

  • 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-IZFV1M

  • 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.

  • NirSoft MailPassView 2 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 2 IoCs

    Password recovery tool for various web browsers

  • Nirsoft 6 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious behavior: MapViewOfSection 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 40 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\fc4fb593fdecc5e6c82c0c98decab2ccd213153078489787712a082c299d20cd.exe
    "C:\Users\Admin\AppData\Local\Temp\fc4fb593fdecc5e6c82c0c98decab2ccd213153078489787712a082c299d20cd.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2868
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\fc4fb593fdecc5e6c82c0c98decab2ccd213153078489787712a082c299d20cd.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2716
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\GwdCcjuxCiQA.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2652
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\GwdCcjuxCiQA" /XML "C:\Users\Admin\AppData\Local\Temp\tmpD3E2.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2692
    • C:\Users\Admin\AppData\Local\Temp\fc4fb593fdecc5e6c82c0c98decab2ccd213153078489787712a082c299d20cd.exe
      "C:\Users\Admin\AppData\Local\Temp\fc4fb593fdecc5e6c82c0c98decab2ccd213153078489787712a082c299d20cd.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2660
      • C:\Users\Admin\AppData\Local\Temp\fc4fb593fdecc5e6c82c0c98decab2ccd213153078489787712a082c299d20cd.exe
        C:\Users\Admin\AppData\Local\Temp\fc4fb593fdecc5e6c82c0c98decab2ccd213153078489787712a082c299d20cd.exe /stext "C:\Users\Admin\AppData\Local\Temp\kfnmylyhyfvmjczknyyuyoqonrqcrdh"
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        PID:2408
      • C:\Users\Admin\AppData\Local\Temp\fc4fb593fdecc5e6c82c0c98decab2ccd213153078489787712a082c299d20cd.exe
        C:\Users\Admin\AppData\Local\Temp\fc4fb593fdecc5e6c82c0c98decab2ccd213153078489787712a082c299d20cd.exe /stext "C:\Users\Admin\AppData\Local\Temp\uhtxrdjjmnnruivofjlvbtkfwgidkoymty"
        3⤵
        • Accesses Microsoft Outlook accounts
        PID:1812
      • C:\Users\Admin\AppData\Local\Temp\fc4fb593fdecc5e6c82c0c98decab2ccd213153078489787712a082c299d20cd.exe
        C:\Users\Admin\AppData\Local\Temp\fc4fb593fdecc5e6c82c0c98decab2ccd213153078489787712a082c299d20cd.exe /stext "C:\Users\Admin\AppData\Local\Temp\xcypsvt"
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:932

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\ProgramData\remcos\logs.dat

    Filesize

    144B

    MD5

    55e6bfffcb10f3ab08a3c2fbe1839087

    SHA1

    d9fdcc9c92b06d94221e7decad0e2dfecd74f662

    SHA256

    e9fce4366bd33f8e99e0a145c84cfe03eca82b040a5a30b3dfdd61c1e21c5663

    SHA512

    708d500d110710fadd055f94b7a6f31dbaa440d80ed1bb0ec71eedf0aed30a84b7b145b85c87431b6ca052647ee8dc6a89d1c6e76c59fb29254696af1d86537e

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

    Filesize

    2B

    MD5

    f3b25701fe362ec84616a93a45ce9998

    SHA1

    d62636d8caec13f04e28442a0a6fa1afeb024bbb

    SHA256

    b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

    SHA512

    98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

  • C:\Users\Admin\AppData\Local\Temp\tmpD3E2.tmp

    Filesize

    1KB

    MD5

    bd6d3f8dc518bbf4d7695b69f1cf1fdb

    SHA1

    0b9d0b8eb0edef2e063e2c9e16d4896dedbd4246

    SHA256

    a56adad54b7d2e8f4d6b868e3cbd87e27cc6d86c60e7a6e447d5f1f9b3fe3782

    SHA512

    71a128513b82dc343b707bdf3f8f084baa67122d29c9761687742c860c33823f8f650f98885dc42c6379578ed39ffcc689bc028b10927cfa074c2598264b7b42

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\4UGCIF5KJLJI7KVXK52O.temp

    Filesize

    7KB

    MD5

    9a52cdd720d600b74dc53e32b879581b

    SHA1

    b5f59e97d8688176f6fd80e3a1a521b0a0f08321

    SHA256

    111bde4d8fb7edf91441db7b1a3077034dac602efc2ad70f0e5a1b5dfc1e27f3

    SHA512

    c1a47d068ba717ddf856cf374de4545c0a2ed5c7c0d560dddea1f36752056b44533b974e189076c051c6b8af2f3676238f2cf927dac1be765d882ece3ed48f88

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

    Filesize

    7KB

    MD5

    9a52cdd720d600b74dc53e32b879581b

    SHA1

    b5f59e97d8688176f6fd80e3a1a521b0a0f08321

    SHA256

    111bde4d8fb7edf91441db7b1a3077034dac602efc2ad70f0e5a1b5dfc1e27f3

    SHA512

    c1a47d068ba717ddf856cf374de4545c0a2ed5c7c0d560dddea1f36752056b44533b974e189076c051c6b8af2f3676238f2cf927dac1be765d882ece3ed48f88

  • memory/932-70-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/932-95-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/932-64-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/932-68-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/932-72-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/1812-71-0x0000000000400000-0x0000000000457000-memory.dmp

    Filesize

    348KB

  • memory/1812-66-0x0000000000400000-0x0000000000457000-memory.dmp

    Filesize

    348KB

  • memory/1812-88-0x0000000000400000-0x0000000000457000-memory.dmp

    Filesize

    348KB

  • memory/1812-61-0x0000000000400000-0x0000000000457000-memory.dmp

    Filesize

    348KB

  • memory/2408-80-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/2408-60-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/2408-56-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/2408-54-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/2408-52-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2652-39-0x000000006EF80000-0x000000006F52B000-memory.dmp

    Filesize

    5.7MB

  • memory/2652-51-0x000000006EF80000-0x000000006F52B000-memory.dmp

    Filesize

    5.7MB

  • memory/2652-43-0x000000006EF80000-0x000000006F52B000-memory.dmp

    Filesize

    5.7MB

  • memory/2652-42-0x0000000002690000-0x00000000026D0000-memory.dmp

    Filesize

    256KB

  • memory/2660-28-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2660-19-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2660-38-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2660-36-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2660-123-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2660-122-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2660-34-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2660-115-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2660-45-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2660-44-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2660-47-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2660-49-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2660-32-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2660-114-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2660-30-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2660-27-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2660-107-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2660-26-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2660-25-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2660-24-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2660-22-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2660-21-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2660-20-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2660-37-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2660-106-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2660-74-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2660-75-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2660-99-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2660-98-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2660-82-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/2660-90-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/2660-89-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2660-85-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/2660-87-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/2660-86-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/2716-50-0x000000006EF80000-0x000000006F52B000-memory.dmp

    Filesize

    5.7MB

  • memory/2716-41-0x00000000026C0000-0x0000000002700000-memory.dmp

    Filesize

    256KB

  • memory/2716-40-0x000000006EF80000-0x000000006F52B000-memory.dmp

    Filesize

    5.7MB

  • memory/2868-3-0x0000000000460000-0x0000000000478000-memory.dmp

    Filesize

    96KB

  • memory/2868-2-0x0000000004C90000-0x0000000004CD0000-memory.dmp

    Filesize

    256KB

  • memory/2868-1-0x00000000740E0000-0x00000000747CE000-memory.dmp

    Filesize

    6.9MB

  • memory/2868-4-0x00000000002E0000-0x00000000002E8000-memory.dmp

    Filesize

    32KB

  • memory/2868-5-0x0000000000300000-0x000000000030A000-memory.dmp

    Filesize

    40KB

  • memory/2868-6-0x00000000053C0000-0x0000000005478000-memory.dmp

    Filesize

    736KB

  • memory/2868-0-0x00000000011D0000-0x00000000012DE000-memory.dmp

    Filesize

    1.1MB

  • memory/2868-33-0x00000000740E0000-0x00000000747CE000-memory.dmp

    Filesize

    6.9MB