Analysis

  • max time kernel
    147s
  • max time network
    146s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240611-en
  • resource tags

    arch:x64arch:x86image:win11-20240611-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    01-07-2024 12:54

General

  • Target

    f251fe71103ef7bc4cbdbcfe9c1d7c4a595f831e51cf4064f2bfa595f47bda35.exe

  • Size

    1.1MB

  • MD5

    28f77c9af8cb3ea886714bbfc8326635

  • SHA1

    f6f02b22cd5a272c71a5afa66efd3b237fe4f24f

  • SHA256

    f251fe71103ef7bc4cbdbcfe9c1d7c4a595f831e51cf4064f2bfa595f47bda35

  • SHA512

    03508e0f3f68696f4f7b64aa737d40e8bd24b69ea7860a8fabee997d238454929605fe5b1ea0880af14cf3a89763d46e1fdeb9a526700d570b0d672330b5f82d

  • SSDEEP

    24576:VcNkX126Z/zxDzTVt8Pyt1KjrJonp0+M+gw/gvXIw/qbw4:NX126zxvxt8P0IepJM+Tzk4

Malware Config

Extracted

Family

remcos

Botnet

sPITTT

C2

antfly50.sytes.net:1980

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-BW3KDF

  • 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 1 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 1 IoCs

    Password recovery tool for various web browsers

  • Nirsoft 3 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • 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).

  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 12 IoCs
  • Suspicious behavior: MapViewOfSection 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 36 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f251fe71103ef7bc4cbdbcfe9c1d7c4a595f831e51cf4064f2bfa595f47bda35.exe
    "C:\Users\Admin\AppData\Local\Temp\f251fe71103ef7bc4cbdbcfe9c1d7c4a595f831e51cf4064f2bfa595f47bda35.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2440
    • 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\f251fe71103ef7bc4cbdbcfe9c1d7c4a595f831e51cf4064f2bfa595f47bda35.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2272
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\znlzneAxBVd.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1468
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\znlzneAxBVd" /XML "C:\Users\Admin\AppData\Local\Temp\tmp9635.tmp"
      2⤵
      • Scheduled Task/Job: Scheduled Task
      PID:1576
    • C:\Users\Admin\AppData\Local\Temp\f251fe71103ef7bc4cbdbcfe9c1d7c4a595f831e51cf4064f2bfa595f47bda35.exe
      "C:\Users\Admin\AppData\Local\Temp\f251fe71103ef7bc4cbdbcfe9c1d7c4a595f831e51cf4064f2bfa595f47bda35.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4920
      • C:\Users\Admin\AppData\Local\Temp\f251fe71103ef7bc4cbdbcfe9c1d7c4a595f831e51cf4064f2bfa595f47bda35.exe
        C:\Users\Admin\AppData\Local\Temp\f251fe71103ef7bc4cbdbcfe9c1d7c4a595f831e51cf4064f2bfa595f47bda35.exe /stext "C:\Users\Admin\AppData\Local\Temp\jjckepndffyrfwowegzhrjsogbmw"
        3⤵
          PID:1956
        • C:\Users\Admin\AppData\Local\Temp\f251fe71103ef7bc4cbdbcfe9c1d7c4a595f831e51cf4064f2bfa595f47bda35.exe
          C:\Users\Admin\AppData\Local\Temp\f251fe71103ef7bc4cbdbcfe9c1d7c4a595f831e51cf4064f2bfa595f47bda35.exe /stext "C:\Users\Admin\AppData\Local\Temp\jjckepndffyrfwowegzhrjsogbmw"
          3⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:4884
        • C:\Users\Admin\AppData\Local\Temp\f251fe71103ef7bc4cbdbcfe9c1d7c4a595f831e51cf4064f2bfa595f47bda35.exe
          C:\Users\Admin\AppData\Local\Temp\f251fe71103ef7bc4cbdbcfe9c1d7c4a595f831e51cf4064f2bfa595f47bda35.exe /stext "C:\Users\Admin\AppData\Local\Temp\tlpvfiyftnqwpckawrmauvmxhhexwod"
          3⤵
          • Accesses Microsoft Outlook accounts
          PID:2312
        • C:\Users\Admin\AppData\Local\Temp\f251fe71103ef7bc4cbdbcfe9c1d7c4a595f831e51cf4064f2bfa595f47bda35.exe
          C:\Users\Admin\AppData\Local\Temp\f251fe71103ef7bc4cbdbcfe9c1d7c4a595f831e51cf4064f2bfa595f47bda35.exe /stext "C:\Users\Admin\AppData\Local\Temp\wfun"
          3⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:3792

    Network

    MITRE ATT&CK Matrix ATT&CK v13

    Execution

    Command and Scripting Interpreter

    1
    T1059

    PowerShell

    1
    T1059.001

    Scheduled Task/Job

    1
    T1053

    Scheduled Task

    1
    T1053.005

    Persistence

    Scheduled Task/Job

    1
    T1053

    Scheduled Task

    1
    T1053.005

    Privilege Escalation

    Scheduled Task/Job

    1
    T1053

    Scheduled Task

    1
    T1053.005

    Credential Access

    Unsecured Credentials

    1
    T1552

    Credentials In Files

    1
    T1552.001

    Discovery

    System Information Discovery

    1
    T1082

    Collection

    Data from Local System

    1
    T1005

    Email Collection

    1
    T1114

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\ProgramData\remcos\logs.dat
      Filesize

      144B

      MD5

      d9c269105660e7a11da580cc64c10861

      SHA1

      550a5d865e12dffd3904eb9cae076f75905422bd

      SHA256

      5a8031969e1b2a48aa5e4ed2f8152d795639d9dd50930d5fdd4e71f3e7406089

      SHA512

      c4888e8b80d191470516037f597af8a24eee93ad4125a5e4bf10fe22ab06e93d1f609fce1cc27a1fcde52b27060a15b96b9a4b265473ba35a94566c0255fe977

    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log
      Filesize

      2KB

      MD5

      ac4917a885cf6050b1a483e4bc4d2ea5

      SHA1

      b1c0a9f27bd21c6bbb8e9be70db8777b4a2a640f

      SHA256

      e39062a62c3c7617feeeff95ea8a0be51104a0d36f46e44eea22556fda74d8d9

      SHA512

      092c67a3ecae1d187cad72a8ea1ea37cb78a0cf79c2cd7fb88953e5990669a2e871267015762fd46d274badb88ac0c1d73b00f1df7394d89bed48a3a45c2ba3d

    • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
      Filesize

      18KB

      MD5

      efaabdb0e9ae4fc065a8adb3520ad7b3

      SHA1

      05c599d93b0dfbed6cecdd7d5968369cb4012414

      SHA256

      d403d7b4841f89d04d7a1b48179ffbbba0ef31e3010a62c21f8fa8f553bc4599

      SHA512

      306a60b55dc7d53b0be89fac300dfa4d096ba36fb4cf2cee5bca8fcbd78b50876b97ae14926025603028756ed37c7946809e7c4aaad708a2dc6ec01ab61968b6

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_2gk5fgap.ahp.ps1
      Filesize

      60B

      MD5

      d17fe0a3f47be24a6453e9ef58c94641

      SHA1

      6ab83620379fc69f80c0242105ddffd7d98d5d9d

      SHA256

      96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

      SHA512

      5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

    • C:\Users\Admin\AppData\Local\Temp\jjckepndffyrfwowegzhrjsogbmw
      Filesize

      2B

      MD5

      f3b25701fe362ec84616a93a45ce9998

      SHA1

      d62636d8caec13f04e28442a0a6fa1afeb024bbb

      SHA256

      b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

      SHA512

      98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

    • C:\Users\Admin\AppData\Local\Temp\tmp9635.tmp
      Filesize

      1KB

      MD5

      f966278ddf1f5749d23123e295b56a89

      SHA1

      1982b3b5aea4cf20807a1a9d22058ed9a0c8db4c

      SHA256

      19660f85713c8081bee909bd8cd41446d01454bfc798b72d8b27341c57ef91a4

      SHA512

      8b916f68b1f304ecab1dcdf316d743e14432ab16dde9f6cd4899233599113d010d668426ce1cb4d06cb923536646ed18a1403f27af46fddf1b9008886a733993

    • memory/1468-20-0x0000000075130000-0x00000000758E1000-memory.dmp
      Filesize

      7.7MB

    • memory/1468-53-0x00000000060B0000-0x00000000060FC000-memory.dmp
      Filesize

      304KB

    • memory/1468-96-0x0000000075130000-0x00000000758E1000-memory.dmp
      Filesize

      7.7MB

    • memory/1468-68-0x0000000006600000-0x000000000661E000-memory.dmp
      Filesize

      120KB

    • memory/1468-58-0x0000000006FD0000-0x0000000007004000-memory.dmp
      Filesize

      208KB

    • memory/1468-59-0x0000000073C00000-0x0000000073C4C000-memory.dmp
      Filesize

      304KB

    • memory/1468-81-0x00000000079E0000-0x000000000805A000-memory.dmp
      Filesize

      6.5MB

    • memory/1468-82-0x0000000007360000-0x000000000737A000-memory.dmp
      Filesize

      104KB

    • memory/1468-83-0x00000000073E0000-0x00000000073EA000-memory.dmp
      Filesize

      40KB

    • memory/1468-52-0x0000000006010000-0x000000000602E000-memory.dmp
      Filesize

      120KB

    • memory/1468-89-0x00000000076A0000-0x00000000076A8000-memory.dmp
      Filesize

      32KB

    • memory/1468-84-0x00000000075F0000-0x0000000007686000-memory.dmp
      Filesize

      600KB

    • memory/1468-48-0x0000000075130000-0x00000000758E1000-memory.dmp
      Filesize

      7.7MB

    • memory/1468-88-0x00000000076B0000-0x00000000076CA000-memory.dmp
      Filesize

      104KB

    • memory/1468-39-0x0000000075130000-0x00000000758E1000-memory.dmp
      Filesize

      7.7MB

    • memory/1468-87-0x00000000075B0000-0x00000000075C5000-memory.dmp
      Filesize

      84KB

    • memory/1468-69-0x00000000072B0000-0x0000000007354000-memory.dmp
      Filesize

      656KB

    • memory/1468-86-0x00000000075A0000-0x00000000075AE000-memory.dmp
      Filesize

      56KB

    • memory/1468-85-0x0000000007570000-0x0000000007581000-memory.dmp
      Filesize

      68KB

    • memory/2272-95-0x0000000075130000-0x00000000758E1000-memory.dmp
      Filesize

      7.7MB

    • memory/2272-21-0x00000000052B0000-0x00000000052D2000-memory.dmp
      Filesize

      136KB

    • memory/2272-40-0x0000000005DB0000-0x0000000006107000-memory.dmp
      Filesize

      3.3MB

    • memory/2272-27-0x00000000053B0000-0x0000000005416000-memory.dmp
      Filesize

      408KB

    • memory/2272-28-0x0000000005C20000-0x0000000005C86000-memory.dmp
      Filesize

      408KB

    • memory/2272-19-0x0000000075130000-0x00000000758E1000-memory.dmp
      Filesize

      7.7MB

    • memory/2272-14-0x0000000004CB0000-0x0000000004CE6000-memory.dmp
      Filesize

      216KB

    • memory/2272-18-0x0000000075130000-0x00000000758E1000-memory.dmp
      Filesize

      7.7MB

    • memory/2272-70-0x0000000073C00000-0x0000000073C4C000-memory.dmp
      Filesize

      304KB

    • memory/2272-15-0x0000000005480000-0x0000000005AAA000-memory.dmp
      Filesize

      6.2MB

    • memory/2272-16-0x0000000075130000-0x00000000758E1000-memory.dmp
      Filesize

      7.7MB

    • memory/2312-107-0x0000000000400000-0x0000000000462000-memory.dmp
      Filesize

      392KB

    • memory/2312-102-0x0000000000400000-0x0000000000462000-memory.dmp
      Filesize

      392KB

    • memory/2312-105-0x0000000000400000-0x0000000000462000-memory.dmp
      Filesize

      392KB

    • memory/2440-41-0x0000000075130000-0x00000000758E1000-memory.dmp
      Filesize

      7.7MB

    • memory/2440-0-0x000000007513E000-0x000000007513F000-memory.dmp
      Filesize

      4KB

    • memory/2440-1-0x00000000004F0000-0x0000000000608000-memory.dmp
      Filesize

      1.1MB

    • memory/2440-2-0x00000000055A0000-0x0000000005B46000-memory.dmp
      Filesize

      5.6MB

    • memory/2440-5-0x0000000075130000-0x00000000758E1000-memory.dmp
      Filesize

      7.7MB

    • memory/2440-3-0x00000000050A0000-0x0000000005132000-memory.dmp
      Filesize

      584KB

    • memory/2440-6-0x0000000005530000-0x0000000005540000-memory.dmp
      Filesize

      64KB

    • memory/2440-7-0x0000000005550000-0x000000000555C000-memory.dmp
      Filesize

      48KB

    • memory/2440-8-0x0000000005F20000-0x0000000005FE0000-memory.dmp
      Filesize

      768KB

    • memory/2440-9-0x00000000081C0000-0x000000000825C000-memory.dmp
      Filesize

      624KB

    • memory/2440-4-0x0000000005240000-0x000000000524A000-memory.dmp
      Filesize

      40KB

    • memory/3792-112-0x0000000000400000-0x0000000000424000-memory.dmp
      Filesize

      144KB

    • memory/3792-108-0x0000000000400000-0x0000000000424000-memory.dmp
      Filesize

      144KB

    • memory/3792-104-0x0000000000400000-0x0000000000424000-memory.dmp
      Filesize

      144KB

    • memory/4884-103-0x0000000000400000-0x0000000000478000-memory.dmp
      Filesize

      480KB

    • memory/4884-106-0x0000000000400000-0x0000000000478000-memory.dmp
      Filesize

      480KB

    • memory/4884-101-0x0000000000400000-0x0000000000478000-memory.dmp
      Filesize

      480KB

    • memory/4920-29-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/4920-115-0x0000000010000000-0x0000000010019000-memory.dmp
      Filesize

      100KB

    • memory/4920-98-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/4920-57-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/4920-37-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/4920-34-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/4920-33-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/4920-47-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/4920-54-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/4920-80-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/4920-56-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/4920-99-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/4920-118-0x0000000010000000-0x0000000010019000-memory.dmp
      Filesize

      100KB

    • memory/4920-119-0x0000000010000000-0x0000000010019000-memory.dmp
      Filesize

      100KB

    • memory/4920-120-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/4920-55-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/4920-126-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/4920-127-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/4920-134-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/4920-135-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/4920-142-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/4920-143-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/4920-151-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/4920-150-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB