Analysis

  • max time kernel
    142s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29-01-2024 13:39

General

  • Target

    ORDER#4510093083_PO_NEW_MATERIAL_JAN_20242.exe

  • Size

    483KB

  • MD5

    5e5c4d53d4c51e067287b3b2c5a0ccb5

  • SHA1

    cd2a82ebb5e573cd01c0b708a249401d35b9424d

  • SHA256

    c6190f275806fbc359dfb1ce50790b29355215fa3b9671ea5a81ac35293b9de3

  • SHA512

    b5d32d5ee4fb3503278bf367f42c962887db26202640e86ef2fa0ccf8cf95f0fd10c65ecb294b51d96616d12e09c601b561d7da55bf42e73d094cb8af08a5999

  • SSDEEP

    6144:XGC7W7BUJEflHwJVUesOjc3kv9MNfvfUuAhbLCrJHvg+JEVV8nU/uwtzSEdyS+tZ:Na7rNQJJpjcgyfvfUPs2PD4EdaMAboDQ

Malware Config

Extracted

Family

remcos

Botnet

2024

C2

72.11.158.94:1604

Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    vexplorers.exe

  • copy_folder

    vexplorers

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    true

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-800RNZ

  • 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 2 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 2 IoCs

    Password recovery tool for various web browsers

  • Nirsoft 7 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 4 IoCs
  • Loads dropped DLL 5 IoCs
  • 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
  • Adds Run key to start application 2 TTPs 6 IoCs
  • Suspicious use of NtCreateThreadExHideFromDebugger 2 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 4 IoCs
  • Suspicious use of SetThreadContext 7 IoCs
  • Drops file in Windows directory 4 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Program crash 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious behavior: MapViewOfSection 9 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 36 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ORDER#4510093083_PO_NEW_MATERIAL_JAN_20242.exe
    "C:\Users\Admin\AppData\Local\Temp\ORDER#4510093083_PO_NEW_MATERIAL_JAN_20242.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • Drops file in Windows directory
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:868
    • C:\Users\Admin\AppData\Local\Temp\ORDER#4510093083_PO_NEW_MATERIAL_JAN_20242.exe
      "C:\Users\Admin\AppData\Local\Temp\ORDER#4510093083_PO_NEW_MATERIAL_JAN_20242.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious use of NtCreateThreadExHideFromDebugger
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious use of WriteProcessMemory
      PID:3568
      • C:\ProgramData\vexplorers\vexplorers.exe
        "C:\ProgramData\vexplorers\vexplorers.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious use of NtSetInformationThreadHideFromDebugger
        • Suspicious use of SetThreadContext
        • Drops file in Windows directory
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of WriteProcessMemory
        PID:4732
        • C:\ProgramData\vexplorers\vexplorers.exe
          "C:\ProgramData\vexplorers\vexplorers.exe"
          4⤵
          • Loads dropped DLL
          • Adds Run key to start application
          • Suspicious use of NtCreateThreadExHideFromDebugger
          • Suspicious use of NtSetInformationThreadHideFromDebugger
          • Suspicious use of SetThreadContext
          • Suspicious behavior: MapViewOfSection
          • Suspicious use of WriteProcessMemory
          PID:2092
          • C:\Windows\SysWOW64\svchost.exe
            svchost.exe
            5⤵
              PID:4080
            • C:\ProgramData\vexplorers\vexplorers.exe
              C:\ProgramData\vexplorers\vexplorers.exe /stext "C:\Users\Admin\AppData\Local\Temp\feirkmltutszfflmrybwbowovvxklosp"
              5⤵
              • Executes dropped EXE
              • Suspicious behavior: EnumeratesProcesses
              PID:3296
            • C:\ProgramData\vexplorers\vexplorers.exe
              C:\ProgramData\vexplorers\vexplorers.exe /stext "C:\Users\Admin\AppData\Local\Temp\iynb"
              5⤵
              • Executes dropped EXE
              • Accesses Microsoft Outlook accounts
              PID:1728
            • C:\ProgramData\vexplorers\vexplorers.exe
              C:\ProgramData\vexplorers\vexplorers.exe /stext "C:\Users\Admin\AppData\Local\Temp\satumxgp"
              5⤵
              • Executes dropped EXE
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              PID:980
            • C:\Windows\SysWOW64\svchost.exe
              svchost.exe
              5⤵
                PID:2524
              • C:\Windows\SysWOW64\svchost.exe
                svchost.exe
                5⤵
                  PID:724
                • C:\Windows\SysWOW64\svchost.exe
                  svchost.exe
                  5⤵
                    PID:716
                  • C:\Windows\SysWOW64\WerFault.exe
                    C:\Windows\SysWOW64\WerFault.exe -u -p 2092 -s 1484
                    5⤵
                    • Program crash
                    PID:2308
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 2092 -ip 2092
            1⤵
              PID:4828

            Network

            MITRE ATT&CK Matrix ATT&CK v13

            Persistence

            Boot or Logon Autostart Execution

            1
            T1547

            Registry Run Keys / Startup Folder

            1
            T1547.001

            Privilege Escalation

            Boot or Logon Autostart Execution

            1
            T1547

            Registry Run Keys / Startup Folder

            1
            T1547.001

            Defense Evasion

            Modify Registry

            1
            T1112

            Credential Access

            Unsecured Credentials

            1
            T1552

            Credentials In Files

            1
            T1552.001

            Discovery

            Query Registry

            1
            T1012

            System Information Discovery

            2
            T1082

            Collection

            Data from Local System

            1
            T1005

            Email Collection

            1
            T1114

            Replay Monitor

            Loading Replay Monitor...

            Downloads

            • C:\ProgramData\vexplorers\vexplorers.exe
              Filesize

              483KB

              MD5

              5e5c4d53d4c51e067287b3b2c5a0ccb5

              SHA1

              cd2a82ebb5e573cd01c0b708a249401d35b9424d

              SHA256

              c6190f275806fbc359dfb1ce50790b29355215fa3b9671ea5a81ac35293b9de3

              SHA512

              b5d32d5ee4fb3503278bf367f42c962887db26202640e86ef2fa0ccf8cf95f0fd10c65ecb294b51d96616d12e09c601b561d7da55bf42e73d094cb8af08a5999

            • C:\ProgramData\vexplorers\vexplorers.exe
              Filesize

              257KB

              MD5

              5288e246130b4f57cded5916fae4f39b

              SHA1

              84697e73b082642f4de4e1ecb6c73f22ea57e0e3

              SHA256

              4fbc84e9a1e75522b42fd3f8a0e8f6b5bb19fe04eed0a487157040d0057c9e77

              SHA512

              758ea0231e480a0cd0a341235dc27389da81d0bb5e7b21d41edfedbefd53e2e52fb7754fc13863812aab8acdc4cdc7e012e7f9904069bbd2ac143948b6fbd86d

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

              4KB

              MD5

              a4b83bf48e62a41c2f45628d10c5bba1

              SHA1

              2596a41d8da2eb88f7f69e27cc16a046a2287f35

              SHA256

              7b29149f6971b7fba6137f401c2d515cc576dafd233b7d312dd7d818b9f91829

              SHA512

              afcaee732127ad05cc70a2a9cca8e4ccdcacf8161b16ed4c5e346418a7c221f3da4f20d95b449fb813a6ccbd2aad05a3a9449a9db01f8fd5c132068d1cf4c7bd

            • C:\Users\Admin\AppData\Local\Temp\nsd6988.tmp\System.dll
              Filesize

              11KB

              MD5

              3e6bf00b3ac976122f982ae2aadb1c51

              SHA1

              caab188f7fdc84d3fdcb2922edeeb5ed576bd31d

              SHA256

              4ff9b2678d698677c5d9732678f9cf53f17290e09d053691aac4cc6e6f595cbe

              SHA512

              1286f05e6a7e6b691f6e479638e7179897598e171b52eb3a3dc0e830415251069d29416b6d1ffc6d7dce8da5625e1479be06db9b7179e7776659c5c1ad6aa706

            • C:\Users\Admin\AppData\Roaming\Nonconsolable\Spirituosa.exe
              Filesize

              483KB

              MD5

              a7ec03cb53accf6dd62ac32f01160173

              SHA1

              1efdba6aba44dbd72fd48a115000c9fa6d542f47

              SHA256

              5d3e517cf5732d40c54fe03d4786ee08c14b29cb5751c4993e2d351e7490e901

              SHA512

              63fb1cfd5038c9051b0ad08d0f90a69c043aeb43b78596b5c733ef2112b44eb7c099f9b0e9daf52c3556a523a98466c223df94feeb5f64bd03f904c1590e2470

            • C:\Users\Admin\yawlsman\knowhow\Koftekldte\Gnomonologically\Septicemic.San
              Filesize

              245KB

              MD5

              ced89e164bfe18cae1aa190b4ae9178c

              SHA1

              94c44c548980a6092706a4ffb943592d9d1f325b

              SHA256

              1f2b3588330809595cb33273ed52c3d14299ca015eb8a70ccdc9ec4ad1ada7b2

              SHA512

              946cecce44eebcdd63f948992926d96f7863238312dc85d31bef7cb2bec31e21c95222d2852a06d0af515961a5164aabcf966ad283794bfa0da7eddb130df93c

            • memory/716-103-0x0000000000400000-0x000000000049B000-memory.dmp
              Filesize

              620KB

            • memory/868-16-0x00000000777C1000-0x00000000778E1000-memory.dmp
              Filesize

              1.1MB

            • memory/868-17-0x0000000010000000-0x0000000010006000-memory.dmp
              Filesize

              24KB

            • memory/980-88-0x0000000000400000-0x0000000000424000-memory.dmp
              Filesize

              144KB

            • memory/980-85-0x0000000000400000-0x0000000000424000-memory.dmp
              Filesize

              144KB

            • memory/980-79-0x0000000000400000-0x0000000000424000-memory.dmp
              Filesize

              144KB

            • memory/980-87-0x0000000000400000-0x0000000000424000-memory.dmp
              Filesize

              144KB

            • memory/980-72-0x0000000000400000-0x0000000000424000-memory.dmp
              Filesize

              144KB

            • memory/980-84-0x0000000000400000-0x0000000000424000-memory.dmp
              Filesize

              144KB

            • memory/1728-71-0x0000000000400000-0x0000000000457000-memory.dmp
              Filesize

              348KB

            • memory/1728-80-0x0000000000400000-0x0000000000457000-memory.dmp
              Filesize

              348KB

            • memory/1728-78-0x0000000000400000-0x0000000000457000-memory.dmp
              Filesize

              348KB

            • memory/1728-67-0x0000000000400000-0x0000000000457000-memory.dmp
              Filesize

              348KB

            • memory/2092-102-0x00000000004A0000-0x00000000016F4000-memory.dmp
              Filesize

              18.3MB

            • memory/2092-101-0x00000000357F0000-0x0000000035809000-memory.dmp
              Filesize

              100KB

            • memory/2092-54-0x00000000004A0000-0x00000000016F4000-memory.dmp
              Filesize

              18.3MB

            • memory/2092-98-0x00000000357F0000-0x0000000035809000-memory.dmp
              Filesize

              100KB

            • memory/3296-64-0x0000000000400000-0x0000000000478000-memory.dmp
              Filesize

              480KB

            • memory/3296-70-0x0000000000400000-0x0000000000478000-memory.dmp
              Filesize

              480KB

            • memory/3296-74-0x0000000000400000-0x0000000000478000-memory.dmp
              Filesize

              480KB

            • memory/3296-95-0x0000000000400000-0x0000000000478000-memory.dmp
              Filesize

              480KB

            • memory/3568-38-0x00000000004A0000-0x00000000016F4000-memory.dmp
              Filesize

              18.3MB

            • memory/3568-21-0x00000000004A0000-0x00000000016F4000-memory.dmp
              Filesize

              18.3MB

            • memory/3568-25-0x00000000777C1000-0x00000000778E1000-memory.dmp
              Filesize

              1.1MB

            • memory/3568-39-0x00000000777C1000-0x00000000778E1000-memory.dmp
              Filesize

              1.1MB

            • memory/3568-19-0x00000000777C1000-0x00000000778E1000-memory.dmp
              Filesize

              1.1MB

            • memory/3568-18-0x0000000077848000-0x0000000077849000-memory.dmp
              Filesize

              4KB

            • memory/4080-62-0x0000000000400000-0x000000000049B000-memory.dmp
              Filesize

              620KB

            • memory/4080-90-0x0000000000400000-0x000000000049B000-memory.dmp
              Filesize

              620KB

            • memory/4080-59-0x0000000000400000-0x000000000049B000-memory.dmp
              Filesize

              620KB

            • memory/4080-61-0x0000000000400000-0x000000000049B000-memory.dmp
              Filesize

              620KB

            • memory/4732-50-0x0000000010000000-0x0000000010006000-memory.dmp
              Filesize

              24KB