Analysis

  • max time kernel
    148s
  • max time network
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13-08-2024 16:58

General

  • Target

    Etkt9oJ08ZyhAlm.exe

  • Size

    910KB

  • MD5

    e93b72986bdf1856a3f407cbb948b5dd

  • SHA1

    3e546f719a8c752429382d7c78747bfe96ac6c42

  • SHA256

    51aa6be003977c67c7eaf393b81af1e5ff9ad99850ce86ba7c3dafe7e12728c6

  • SHA512

    7195283fdeec6479e6b0225a9ba3c95c430770173bf1148f1cd10f11a0183fe2082adf67849ceb2841f016bcf9af203268633295da8062ad18444a8b9c69ba9d

  • SSDEEP

    24576:rBuYiVAVhw4b8TrquAD+xCyUpoPNOUEqgkQt+wUcVWVD:rBuYIgnbWrCD+xCyhVSdVi

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

192.3.243.155:7643

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-C9YEJ8

  • 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.

  • 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.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Suspicious use of SetThreadContext 1 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.

  • 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 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Etkt9oJ08ZyhAlm.exe
    "C:\Users\Admin\AppData\Local\Temp\Etkt9oJ08ZyhAlm.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3268
    • 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\Etkt9oJ08ZyhAlm.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1828
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\kFkVqvIpoatJkA.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:928
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\kFkVqvIpoatJkA" /XML "C:\Users\Admin\AppData\Local\Temp\tmpD7D2.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:3164
    • C:\Users\Admin\AppData\Local\Temp\Etkt9oJ08ZyhAlm.exe
      "C:\Users\Admin\AppData\Local\Temp\Etkt9oJ08ZyhAlm.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:3280

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\ProgramData\remcos\logs.dat

    Filesize

    144B

    MD5

    41ec61e6496d2806eaf073da9e930ab4

    SHA1

    73e1bc1c9c76812f0cd10a8b2421306cf9311968

    SHA256

    00da64a149bd74e0e1d2505a08d94cab115cb08922dbcb663230aff9e3eb9020

    SHA512

    f60940e5559d3a91817fa6ba016f7a44f29a61509c2acccf4b06def15675e00ef8862529b6c4b6aa71a034f90a3ccc2953be79e0908034e09af60dea4d5981a1

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

    Filesize

    2KB

    MD5

    968cb9309758126772781b83adb8a28f

    SHA1

    8da30e71accf186b2ba11da1797cf67f8f78b47c

    SHA256

    92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a

    SHA512

    4bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3

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

    Filesize

    64B

    MD5

    c1f737601158ec8987031547fbf8ed36

    SHA1

    7224feffd04381074f237420138752a5e9f3c3c3

    SHA256

    484eb5792acc4fb0a42e89bbc97d60a7e50f37d3ca0a2e1de108cdc768251fe6

    SHA512

    7e2c3f0d4eac03525246cfb963b9d53eb7e9b73044e52ecab8dc35fba84aff1dd3f72f81169c67a1c011318bcb6ff186bbedd17e7ad80657d1cdef670227444b

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_cn5xnjsv.akg.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\tmpD7D2.tmp

    Filesize

    1KB

    MD5

    cd421562173539a0b294846afbb52654

    SHA1

    295835ed6deb0abe04060285db90596f9ab5395a

    SHA256

    38815eca6b8f6a2b9e23314af58f7c0995772f1f6d21d885e6147d8560df49e6

    SHA512

    885fb0e9596c591ff420750b9847d4a58b39e98f11421a7d4e150e924064c891bc288dd41e5bf0a217c6d9bca1ff515523a7894eb624a4dc138afe7b40876b5b

  • memory/928-18-0x0000000074E00000-0x00000000755B0000-memory.dmp

    Filesize

    7.7MB

  • memory/928-104-0x0000000074E00000-0x00000000755B0000-memory.dmp

    Filesize

    7.7MB

  • memory/928-84-0x0000000075690000-0x00000000756DC000-memory.dmp

    Filesize

    304KB

  • memory/928-44-0x0000000074E00000-0x00000000755B0000-memory.dmp

    Filesize

    7.7MB

  • memory/928-20-0x0000000074E00000-0x00000000755B0000-memory.dmp

    Filesize

    7.7MB

  • memory/1828-94-0x0000000007070000-0x0000000007078000-memory.dmp

    Filesize

    32KB

  • memory/1828-62-0x0000000075690000-0x00000000756DC000-memory.dmp

    Filesize

    304KB

  • memory/1828-15-0x0000000074E00000-0x00000000755B0000-memory.dmp

    Filesize

    7.7MB

  • memory/1828-17-0x0000000074E00000-0x00000000755B0000-memory.dmp

    Filesize

    7.7MB

  • memory/1828-14-0x0000000002110000-0x0000000002146000-memory.dmp

    Filesize

    216KB

  • memory/1828-99-0x0000000074E00000-0x00000000755B0000-memory.dmp

    Filesize

    7.7MB

  • memory/1828-83-0x0000000007090000-0x00000000070AA000-memory.dmp

    Filesize

    104KB

  • memory/1828-21-0x0000000004A90000-0x0000000004AB2000-memory.dmp

    Filesize

    136KB

  • memory/1828-23-0x0000000005400000-0x0000000005466000-memory.dmp

    Filesize

    408KB

  • memory/1828-24-0x0000000074E00000-0x00000000755B0000-memory.dmp

    Filesize

    7.7MB

  • memory/1828-82-0x0000000006F90000-0x0000000006FA4000-memory.dmp

    Filesize

    80KB

  • memory/1828-81-0x0000000006F80000-0x0000000006F8E000-memory.dmp

    Filesize

    56KB

  • memory/1828-80-0x0000000006F50000-0x0000000006F61000-memory.dmp

    Filesize

    68KB

  • memory/1828-79-0x0000000006FD0000-0x0000000007066000-memory.dmp

    Filesize

    600KB

  • memory/1828-54-0x0000000005A30000-0x0000000005A4E000-memory.dmp

    Filesize

    120KB

  • memory/1828-78-0x0000000006DC0000-0x0000000006DCA000-memory.dmp

    Filesize

    40KB

  • memory/1828-57-0x0000000005F10000-0x0000000005F5C000-memory.dmp

    Filesize

    304KB

  • memory/1828-38-0x0000000005470000-0x00000000057C4000-memory.dmp

    Filesize

    3.3MB

  • memory/1828-74-0x0000000007390000-0x0000000007A0A000-memory.dmp

    Filesize

    6.5MB

  • memory/1828-75-0x0000000006D50000-0x0000000006D6A000-memory.dmp

    Filesize

    104KB

  • memory/1828-61-0x0000000006030000-0x0000000006062000-memory.dmp

    Filesize

    200KB

  • memory/1828-16-0x0000000004B00000-0x0000000005128000-memory.dmp

    Filesize

    6.2MB

  • memory/1828-73-0x0000000006A40000-0x0000000006AE3000-memory.dmp

    Filesize

    652KB

  • memory/1828-72-0x0000000005FC0000-0x0000000005FDE000-memory.dmp

    Filesize

    120KB

  • memory/1828-22-0x00000000052E0000-0x0000000005346000-memory.dmp

    Filesize

    408KB

  • memory/3268-7-0x0000000005590000-0x00000000055A6000-memory.dmp

    Filesize

    88KB

  • memory/3268-1-0x00000000006A0000-0x000000000078A000-memory.dmp

    Filesize

    936KB

  • memory/3268-2-0x0000000005640000-0x0000000005BE4000-memory.dmp

    Filesize

    5.6MB

  • memory/3268-6-0x0000000005360000-0x000000000537E000-memory.dmp

    Filesize

    120KB

  • memory/3268-3-0x0000000005170000-0x0000000005202000-memory.dmp

    Filesize

    584KB

  • memory/3268-4-0x0000000005230000-0x000000000523A000-memory.dmp

    Filesize

    40KB

  • memory/3268-9-0x000000000BC10000-0x000000000BCAC000-memory.dmp

    Filesize

    624KB

  • memory/3268-0-0x0000000074E0E000-0x0000000074E0F000-memory.dmp

    Filesize

    4KB

  • memory/3268-5-0x0000000074E00000-0x00000000755B0000-memory.dmp

    Filesize

    7.7MB

  • memory/3268-8-0x0000000008AB0000-0x0000000008B70000-memory.dmp

    Filesize

    768KB

  • memory/3268-53-0x0000000074E00000-0x00000000755B0000-memory.dmp

    Filesize

    7.7MB

  • memory/3280-39-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3280-60-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3280-26-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3280-77-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3280-25-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3280-37-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3280-95-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3280-96-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3280-58-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3280-34-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3280-59-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3280-45-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3280-27-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3280-109-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3280-111-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3280-112-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3280-119-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3280-120-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3280-127-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3280-128-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3280-135-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3280-136-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB