Analysis

  • max time kernel
    149s
  • 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
    14-08-2024 01:20

General

  • Target

    b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244.exe

  • Size

    1.1MB

  • MD5

    feefffb2f85e6449769501809c3da84c

  • SHA1

    e8841eb6afd72c1487ec5323a5bc4f37bfae0dcf

  • SHA256

    b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244

  • SHA512

    83a4c56f10148660c5c528f1b637dc40ffd1337a87be2f50161813c9d36641a48cf7babf8d0dfea2414f38da43a95529c8fe00e8c135243b380ea518496e9457

  • SSDEEP

    24576:hNDsYdZxwZQSkazcndb4MeFCu5+eADOWWiKDZbD0E+ou3x9+rreMoB:7teZExndpegSgLk/0E+h3L+rW

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

65.21.66.222:9821

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-LDQ8V0

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    Remcos

  • 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 11 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244.exe
    "C:\Users\Admin\AppData\Local\Temp\b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4984
    • 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\b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:212
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\NUKXaCFNwRYYxi.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2904
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\NUKXaCFNwRYYxi" /XML "C:\Users\Admin\AppData\Local\Temp\tmp6879.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:2484
    • C:\Users\Admin\AppData\Local\Temp\b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244.exe
      "C:\Users\Admin\AppData\Local\Temp\b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      PID:1392

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • 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

    635e6431e9303a373037845f8f7d4698

    SHA1

    50f6c1cec6edc13c6ec42512ba32aee349e74f84

    SHA256

    47d57b73d816902846cb5378933a0976946ac3fd1f394f58d23cd75f766939df

    SHA512

    d53c03e43139622896106bbccfe7b00c6a2dd1ae765fbcf41614f784ceabda93fd19767ece02e0278363e0fef2e31c6341149ae9357dde8070234176452d7191

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_r3h2c2m5.fhl.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\tmp6879.tmp

    Filesize

    1KB

    MD5

    7d134981fec2e0a764026a9a70bb4139

    SHA1

    b25f04cbc1ae25c72f5f8ed9551d34af576e24a4

    SHA256

    d2615bdd0f9f990c892d4409723341974d07fc49d83b4f000905143b5e12b39a

    SHA512

    252b97c069ed0abccd3291c5f0153a341f2098bf5d7f5ccdeacf23d4bfb8550146f190b44947eca5ca97704a49e30fb3c31c0820792321de87ab4a23806adcc4

  • memory/212-87-0x0000000007090000-0x00000000070A1000-memory.dmp

    Filesize

    68KB

  • memory/212-86-0x0000000007110000-0x00000000071A6000-memory.dmp

    Filesize

    600KB

  • memory/212-54-0x0000000005F70000-0x0000000005FBC000-memory.dmp

    Filesize

    304KB

  • memory/212-60-0x0000000006B00000-0x0000000006B32000-memory.dmp

    Filesize

    200KB

  • memory/212-71-0x0000000006120000-0x000000000613E000-memory.dmp

    Filesize

    120KB

  • memory/212-61-0x0000000075320000-0x000000007536C000-memory.dmp

    Filesize

    304KB

  • memory/212-73-0x00000000074E0000-0x0000000007B5A000-memory.dmp

    Filesize

    6.5MB

  • memory/212-15-0x0000000002250000-0x0000000002286000-memory.dmp

    Filesize

    216KB

  • memory/212-74-0x0000000006E90000-0x0000000006EAA000-memory.dmp

    Filesize

    104KB

  • memory/212-17-0x0000000074A90000-0x0000000075240000-memory.dmp

    Filesize

    7.7MB

  • memory/212-19-0x0000000074A90000-0x0000000075240000-memory.dmp

    Filesize

    7.7MB

  • memory/212-18-0x0000000004DF0000-0x0000000005418000-memory.dmp

    Filesize

    6.2MB

  • memory/212-20-0x0000000074A90000-0x0000000075240000-memory.dmp

    Filesize

    7.7MB

  • memory/212-53-0x0000000005B50000-0x0000000005B6E000-memory.dmp

    Filesize

    120KB

  • memory/212-23-0x0000000005500000-0x0000000005566000-memory.dmp

    Filesize

    408KB

  • memory/212-22-0x0000000005420000-0x0000000005486000-memory.dmp

    Filesize

    408KB

  • memory/212-21-0x0000000004CA0000-0x0000000004CC2000-memory.dmp

    Filesize

    136KB

  • memory/212-85-0x0000000006F00000-0x0000000006F0A000-memory.dmp

    Filesize

    40KB

  • memory/212-26-0x0000000005570000-0x00000000058C4000-memory.dmp

    Filesize

    3.3MB

  • memory/212-72-0x0000000006B40000-0x0000000006BE3000-memory.dmp

    Filesize

    652KB

  • memory/212-97-0x0000000074A90000-0x0000000075240000-memory.dmp

    Filesize

    7.7MB

  • memory/1392-102-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1392-104-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1392-41-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1392-55-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1392-99-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1392-101-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1392-39-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1392-103-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1392-35-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1392-40-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1392-57-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1392-59-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1392-106-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1392-56-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1392-105-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2904-89-0x0000000007780000-0x0000000007794000-memory.dmp

    Filesize

    80KB

  • memory/2904-90-0x0000000007880000-0x000000000789A000-memory.dmp

    Filesize

    104KB

  • memory/2904-25-0x0000000074A90000-0x0000000075240000-memory.dmp

    Filesize

    7.7MB

  • memory/2904-27-0x0000000074A90000-0x0000000075240000-memory.dmp

    Filesize

    7.7MB

  • memory/2904-75-0x0000000075320000-0x000000007536C000-memory.dmp

    Filesize

    304KB

  • memory/2904-28-0x0000000074A90000-0x0000000075240000-memory.dmp

    Filesize

    7.7MB

  • memory/2904-98-0x0000000074A90000-0x0000000075240000-memory.dmp

    Filesize

    7.7MB

  • memory/2904-88-0x0000000007770000-0x000000000777E000-memory.dmp

    Filesize

    56KB

  • memory/2904-91-0x0000000007860000-0x0000000007868000-memory.dmp

    Filesize

    32KB

  • memory/4984-0-0x0000000074A9E000-0x0000000074A9F000-memory.dmp

    Filesize

    4KB

  • memory/4984-5-0x0000000074A90000-0x0000000075240000-memory.dmp

    Filesize

    7.7MB

  • memory/4984-2-0x0000000005990000-0x0000000005F34000-memory.dmp

    Filesize

    5.6MB

  • memory/4984-1-0x0000000000810000-0x0000000000920000-memory.dmp

    Filesize

    1.1MB

  • memory/4984-8-0x0000000008D70000-0x0000000008E2E000-memory.dmp

    Filesize

    760KB

  • memory/4984-3-0x0000000005300000-0x0000000005392000-memory.dmp

    Filesize

    584KB

  • memory/4984-52-0x0000000074A90000-0x0000000075240000-memory.dmp

    Filesize

    7.7MB

  • memory/4984-6-0x0000000005590000-0x00000000055AE000-memory.dmp

    Filesize

    120KB

  • memory/4984-4-0x00000000053A0000-0x00000000053AA000-memory.dmp

    Filesize

    40KB

  • memory/4984-16-0x0000000074A90000-0x0000000075240000-memory.dmp

    Filesize

    7.7MB

  • memory/4984-10-0x0000000074A9E000-0x0000000074A9F000-memory.dmp

    Filesize

    4KB

  • memory/4984-9-0x000000000BED0000-0x000000000BF6C000-memory.dmp

    Filesize

    624KB

  • memory/4984-7-0x00000000058C0000-0x00000000058D6000-memory.dmp

    Filesize

    88KB