Analysis

  • max time kernel
    120s
  • max time network
    118s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27-08-2024 10:20

General

  • Target

    02bd0ebaf5baff24369602f3057591e0N.exe

  • Size

    1005KB

  • MD5

    02bd0ebaf5baff24369602f3057591e0

  • SHA1

    e7698ec849ae4a68f90d412b0deedd7af95cfacd

  • SHA256

    e783db94296b76ad76fd327eb96fa7171aaf39265fe91e72a03a78babe1dd734

  • SHA512

    3371187a1f14c9261bf7675a8d748eea42a629114079a930aacbce861d5d694ce8c79030ed1d6e6b9a50beae4bec4576b64b54973bade269f728f075380faee9

  • SSDEEP

    24576:ZWC/qaSu5K+5ImKmirxp9bWJxbcQNB2A+nE2+qOQtEZvpNpifum:oiUuGpmc+lh2ASE2HgHNpi2m

Malware Config

Extracted

Family

remcos

Botnet

Aug 20C

C2

method8888.ddns.net:6902

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-4ZC3PQ

  • 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.

  • Credentials from Password Stores: Credentials from Web Browsers 1 TTPs

    Malicious Access or copy of Web Browser Credential store.

  • Detected Nirsoft tools 3 IoCs

    Free utilities often used by attackers which can steal passwords, product keys, etc.

  • NirSoft MailPassView 1 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 1 IoCs

    Password recovery tool for various web browsers

  • 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.

  • 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).

  • System Location Discovery: System Language Discovery 1 TTPs 8 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 11 IoCs
  • Suspicious behavior: MapViewOfSection 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 33 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\02bd0ebaf5baff24369602f3057591e0N.exe
    "C:\Users\Admin\AppData\Local\Temp\02bd0ebaf5baff24369602f3057591e0N.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1060
    • 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\02bd0ebaf5baff24369602f3057591e0N.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4792
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\IAVsylTuejD.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1428
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\IAVsylTuejD" /XML "C:\Users\Admin\AppData\Local\Temp\tmpE4A3.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:2912
    • C:\Users\Admin\AppData\Local\Temp\02bd0ebaf5baff24369602f3057591e0N.exe
      "C:\Users\Admin\AppData\Local\Temp\02bd0ebaf5baff24369602f3057591e0N.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:3056
      • C:\Users\Admin\AppData\Local\Temp\02bd0ebaf5baff24369602f3057591e0N.exe
        C:\Users\Admin\AppData\Local\Temp\02bd0ebaf5baff24369602f3057591e0N.exe /stext "C:\Users\Admin\AppData\Local\Temp\sqraptxulikpccjuuvqgsqfu"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        PID:536
      • C:\Users\Admin\AppData\Local\Temp\02bd0ebaf5baff24369602f3057591e0N.exe
        C:\Users\Admin\AppData\Local\Temp\02bd0ebaf5baff24369602f3057591e0N.exe /stext "C:\Users\Admin\AppData\Local\Temp\cswlplinhqccmqxylflidvaluwgd"
        3⤵
        • Accesses Microsoft Outlook accounts
        • System Location Discovery: System Language Discovery
        PID:1068
      • C:\Users\Admin\AppData\Local\Temp\02bd0ebaf5baff24369602f3057591e0N.exe
        C:\Users\Admin\AppData\Local\Temp\02bd0ebaf5baff24369602f3057591e0N.exe /stext "C:\Users\Admin\AppData\Local\Temp\nnceqespuyugoxtcviyboiuuvcpmxoo"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1496

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\ProgramData\remcos\logs.dat

    Filesize

    144B

    MD5

    7639c00c819ff1d7f66b079f13c03110

    SHA1

    f7b40e0c5dd2dc5bcc937702ed2f4fea74d99504

    SHA256

    e8bcb2f458d9f929970cca981a33cf8074aeef7f463c712e92d6fbc47d11bc63

    SHA512

    e82489fbc2fe01490dabce8a7809d3cf6e8166112995e6879fd9293069d43424d7b716af1937c6fc88aaf3936e9fe4503df2e33b64d02d2540ff41c7dabb8abb

  • 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

    18KB

    MD5

    dc9ad89778792a0154d693bfc1fecae5

    SHA1

    d112b0d066702ac35bb627e7586b22a374c2a80b

    SHA256

    5cb976dfec420c9bf829eaac0c6c9a9d553bdf791a09ac94be8c94db4cbde669

    SHA512

    02cc5ae67b8c5f929e4ca4ac368629e7919f055957b81955d1d06a3ad7e272fdfc87d2a431f31797ea15df92e32b7f8aadf88acaadfe7ebe7a04b14b4c899317

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_3fvkpys4.2kz.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

    Filesize

    4KB

    MD5

    ea01dd92b15d2f570f6b167dad2d1fd0

    SHA1

    7b89141d4c3eb2f29d096f28a9bfe66eb006224a

    SHA256

    0515f49138d74283f9ac1042fd1a384f715b74c2b99193454dbb0cd585097727

    SHA512

    0e7695aea30250a41829fa4abb681b8c3ed4c0955e18f1f9f3a5456bfb3a76f016f538e557bf29b99ab6ab48c846f9fa3c4bccd8cb5fe73099a81b5946029ec8

  • C:\Users\Admin\AppData\Local\Temp\tmpE4A3.tmp

    Filesize

    1KB

    MD5

    5e6f778ad12b1eb6965713d97a9ba3ee

    SHA1

    e2e0691f4c24ec0baa5d89e3c06327a00e94c1d0

    SHA256

    fb959ef895096e9be7728cafd1020a5d9ddfb58d532864bde8ea22e7d4301283

    SHA512

    9239411d5a065694ca003c4cacec2df6deeed9e80e3754964bdf93b9a5c5a079291375d970cdb1f44840bce396b79ba67f155debd940004c05d6d0239b9ad001

  • memory/536-79-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/536-81-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/536-80-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/1060-5-0x0000000074D00000-0x00000000754B0000-memory.dmp

    Filesize

    7.7MB

  • memory/1060-54-0x0000000074D00000-0x00000000754B0000-memory.dmp

    Filesize

    7.7MB

  • memory/1060-9-0x0000000006BE0000-0x0000000006C7C000-memory.dmp

    Filesize

    624KB

  • memory/1060-8-0x00000000069E0000-0x0000000006AA0000-memory.dmp

    Filesize

    768KB

  • memory/1060-0-0x0000000074D0E000-0x0000000074D0F000-memory.dmp

    Filesize

    4KB

  • memory/1060-7-0x0000000005AF0000-0x0000000005B00000-memory.dmp

    Filesize

    64KB

  • memory/1060-6-0x0000000005AD0000-0x0000000005AE2000-memory.dmp

    Filesize

    72KB

  • memory/1060-4-0x0000000005760000-0x000000000576A000-memory.dmp

    Filesize

    40KB

  • memory/1060-3-0x00000000056A0000-0x0000000005732000-memory.dmp

    Filesize

    584KB

  • memory/1060-2-0x0000000005B70000-0x0000000006114000-memory.dmp

    Filesize

    5.6MB

  • memory/1060-1-0x0000000000BD0000-0x0000000000CCE000-memory.dmp

    Filesize

    1016KB

  • memory/1068-86-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/1068-82-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/1068-84-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/1428-121-0x0000000074D00000-0x00000000754B0000-memory.dmp

    Filesize

    7.7MB

  • memory/1428-23-0x0000000074D00000-0x00000000754B0000-memory.dmp

    Filesize

    7.7MB

  • memory/1428-107-0x000000006F630000-0x000000006F67C000-memory.dmp

    Filesize

    304KB

  • memory/1428-18-0x0000000074D00000-0x00000000754B0000-memory.dmp

    Filesize

    7.7MB

  • memory/1428-30-0x0000000074D00000-0x00000000754B0000-memory.dmp

    Filesize

    7.7MB

  • memory/1496-88-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/1496-87-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/1496-85-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/3056-52-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3056-57-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3056-56-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3056-59-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3056-58-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3056-101-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/3056-36-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3056-102-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/3056-74-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3056-103-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3056-39-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3056-98-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/3056-42-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3056-37-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3056-125-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3056-126-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3056-133-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3056-134-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3056-141-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3056-142-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4792-72-0x0000000006EC0000-0x0000000006F63000-memory.dmp

    Filesize

    652KB

  • memory/4792-83-0x00000000073D0000-0x00000000073E1000-memory.dmp

    Filesize

    68KB

  • memory/4792-78-0x0000000007450000-0x00000000074E6000-memory.dmp

    Filesize

    600KB

  • memory/4792-77-0x0000000007240000-0x000000000724A000-memory.dmp

    Filesize

    40KB

  • memory/4792-92-0x0000000007400000-0x000000000740E000-memory.dmp

    Filesize

    56KB

  • memory/4792-94-0x0000000007410000-0x0000000007424000-memory.dmp

    Filesize

    80KB

  • memory/4792-95-0x0000000007510000-0x000000000752A000-memory.dmp

    Filesize

    104KB

  • memory/4792-96-0x00000000074F0000-0x00000000074F8000-memory.dmp

    Filesize

    32KB

  • memory/4792-75-0x0000000007810000-0x0000000007E8A000-memory.dmp

    Filesize

    6.5MB

  • memory/4792-76-0x00000000071D0000-0x00000000071EA000-memory.dmp

    Filesize

    104KB

  • memory/4792-60-0x0000000006E80000-0x0000000006EB2000-memory.dmp

    Filesize

    200KB

  • memory/4792-61-0x000000006F630000-0x000000006F67C000-memory.dmp

    Filesize

    304KB

  • memory/4792-71-0x0000000006E40000-0x0000000006E5E000-memory.dmp

    Filesize

    120KB

  • memory/4792-106-0x0000000074D00000-0x00000000754B0000-memory.dmp

    Filesize

    7.7MB

  • memory/4792-53-0x0000000005E80000-0x0000000005E9E000-memory.dmp

    Filesize

    120KB

  • memory/4792-55-0x0000000006420000-0x000000000646C000-memory.dmp

    Filesize

    304KB

  • memory/4792-24-0x0000000074D00000-0x00000000754B0000-memory.dmp

    Filesize

    7.7MB

  • memory/4792-35-0x00000000058E0000-0x0000000005C34000-memory.dmp

    Filesize

    3.3MB

  • memory/4792-20-0x0000000004EE0000-0x0000000004F02000-memory.dmp

    Filesize

    136KB

  • memory/4792-21-0x0000000005000000-0x0000000005066000-memory.dmp

    Filesize

    408KB

  • memory/4792-22-0x0000000005870000-0x00000000058D6000-memory.dmp

    Filesize

    408KB

  • memory/4792-17-0x0000000074D00000-0x00000000754B0000-memory.dmp

    Filesize

    7.7MB

  • memory/4792-16-0x0000000074D00000-0x00000000754B0000-memory.dmp

    Filesize

    7.7MB

  • memory/4792-15-0x0000000005140000-0x0000000005768000-memory.dmp

    Filesize

    6.2MB

  • memory/4792-14-0x0000000004930000-0x0000000004966000-memory.dmp

    Filesize

    216KB