Analysis

  • max time kernel
    139s
  • max time network
    151s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    26-07-2021 08:10

General

  • Target

    0481f43c7f5b88e571514182c7ed5f64.exe

  • Size

    457KB

  • MD5

    0481f43c7f5b88e571514182c7ed5f64

  • SHA1

    6b597b3ddb06f3d68323c43a3d000452a115501d

  • SHA256

    885e34ff7befbdcdb027a017843cbacdba7eebb34d3df2e3113cceb9adafe8b5

  • SHA512

    a7d260045043187546a437a5d708eabffcd339648a45cc23b175fc3cba996551f696dd3b114b1630be6e23324b63906788ffe5cf93e3849b382c30d391b6d9ba

Malware Config

Extracted

Family

warzonerat

C2

byx.z86.ru:5200

Extracted

Family

remcos

Version

1.7 Pro

Botnet

Host

C2

dpqw-avira.bot.nu:2404

Attributes
  • audio_folder

    audio

  • audio_path

    %AppData%

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    5

  • copy_file

    explorer.exe

  • copy_folder

    windows

  • delete_file

    false

  • hide_file

    true

  • hide_keylog_file

    false

  • install_flag

    true

  • install_path

    %AppData%

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    remcos_abihghbcgbxx#

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screens

  • screenshot_path

    %AppData%

  • screenshot_time

    1

  • startup_value

    pdf

  • take_screenshot_option

    false

  • take_screenshot_time

    5

  • take_screenshot_title

Signatures

  • Remcos

    Remcos is a closed-source remote control and surveillance software.

  • WarzoneRat, AveMaria

    WarzoneRat is a native RAT developed in C++ with multiple plugins sold as a MaaS.

  • suricata: ET MALWARE Terse alphanumeric executable downloader high likelihood of being hostile
  • Downloads MZ/PE file
  • Executes dropped EXE 4 IoCs
  • Loads dropped DLL 6 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Adds Run key to start application 2 TTPs 8 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 49 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\0481f43c7f5b88e571514182c7ed5f64.exe
    "C:\Users\Admin\AppData\Local\Temp\0481f43c7f5b88e571514182c7ed5f64.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4060
    • C:\Users\Admin\AppData\Local\Temp\0481f43c7f5b88e571514182c7ed5f64.exe
      C:\Users\Admin\AppData\Local\Temp\0481f43c7f5b88e571514182c7ed5f64.exe
      2⤵
        PID:1524
      • C:\Users\Admin\AppData\Local\Temp\0481f43c7f5b88e571514182c7ed5f64.exe
        C:\Users\Admin\AppData\Local\Temp\0481f43c7f5b88e571514182c7ed5f64.exe
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:2056
        • C:\Windows\SysWOW64\cmd.exe
          cmd.exe /c REG ADD "HKCU\Software\Microsoft\Windows NT\CurrentVersion\Windows" /f /v Load /t REG_SZ /d "C:\ProgramData\svchost.exe"
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:3356
          • C:\Windows\SysWOW64\reg.exe
            REG ADD "HKCU\Software\Microsoft\Windows NT\CurrentVersion\Windows" /f /v Load /t REG_SZ /d "C:\ProgramData\svchost.exe"
            4⤵
              PID:2068
          • C:\ProgramData\svchost.exe
            "C:\ProgramData\svchost.exe"
            3⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:3680
            • C:\Users\Admin\AppData\Local\Temp\svchost.exe
              C:\Users\Admin\AppData\Local\Temp\svchost.exe
              4⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Suspicious use of SetWindowsHookEx
              • Suspicious use of WriteProcessMemory
              PID:1424
              • C:\Windows\SysWOW64\cmd.exe
                "C:\Windows\System32\cmd.exe"
                5⤵
                  PID:1520
                • C:\Users\Admin\AppData\Roaming\uKyEwHirA.exe
                  "C:\Users\Admin\AppData\Roaming\uKyEwHirA.exe"
                  5⤵
                  • Executes dropped EXE
                  • Adds Run key to start application
                  • Suspicious use of WriteProcessMemory
                  PID:644
                  • C:\Windows\SysWOW64\cmd.exe
                    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\install.bat" "
                    6⤵
                    • Suspicious use of WriteProcessMemory
                    PID:3980
                    • C:\Windows\SysWOW64\PING.EXE
                      PING 127.0.0.1 -n 2
                      7⤵
                      • Runs ping.exe
                      PID:2296
                    • C:\Users\Admin\AppData\Roaming\windows\explorer.exe
                      "C:\Users\Admin\AppData\Roaming\windows\explorer.exe"
                      7⤵
                      • Executes dropped EXE
                      • Adds Run key to start application
                      PID:2992

        Network

        MITRE ATT&CK Matrix ATT&CK v6

        Persistence

        Registry Run Keys / Startup Folder

        1
        T1060

        Defense Evasion

        Modify Registry

        1
        T1112

        Credential Access

        Credentials in Files

        1
        T1081

        Discovery

        System Information Discovery

        1
        T1082

        Remote System Discovery

        1
        T1018

        Collection

        Data from Local System

        1
        T1005

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\ProgramData\svchost.exe
          MD5

          0481f43c7f5b88e571514182c7ed5f64

          SHA1

          6b597b3ddb06f3d68323c43a3d000452a115501d

          SHA256

          885e34ff7befbdcdb027a017843cbacdba7eebb34d3df2e3113cceb9adafe8b5

          SHA512

          a7d260045043187546a437a5d708eabffcd339648a45cc23b175fc3cba996551f696dd3b114b1630be6e23324b63906788ffe5cf93e3849b382c30d391b6d9ba

        • C:\ProgramData\svchost.exe
          MD5

          0481f43c7f5b88e571514182c7ed5f64

          SHA1

          6b597b3ddb06f3d68323c43a3d000452a115501d

          SHA256

          885e34ff7befbdcdb027a017843cbacdba7eebb34d3df2e3113cceb9adafe8b5

          SHA512

          a7d260045043187546a437a5d708eabffcd339648a45cc23b175fc3cba996551f696dd3b114b1630be6e23324b63906788ffe5cf93e3849b382c30d391b6d9ba

        • C:\Users\Admin\AppData\Local\Temp\install.bat
          MD5

          514640b2ac709250f11d838ad29e2c0f

          SHA1

          29046710afc21589b0ccd50379f76767b40b1819

          SHA256

          c98ac7e318fd8b9694a0966da406f3c87f20f41f82cf98359c6e4aaf3fd89e53

          SHA512

          f5666c13ab715486614652fa6b405c7cae843d3fa0b00d82d443ed0da8212084382e01e39fc5de1f194713ef397e793c712ff28df36e4bf27a62ea7eb109655e

        • C:\Users\Admin\AppData\Local\Temp\svchost.exe
          MD5

          0481f43c7f5b88e571514182c7ed5f64

          SHA1

          6b597b3ddb06f3d68323c43a3d000452a115501d

          SHA256

          885e34ff7befbdcdb027a017843cbacdba7eebb34d3df2e3113cceb9adafe8b5

          SHA512

          a7d260045043187546a437a5d708eabffcd339648a45cc23b175fc3cba996551f696dd3b114b1630be6e23324b63906788ffe5cf93e3849b382c30d391b6d9ba

        • C:\Users\Admin\AppData\Local\Temp\svchost.exe
          MD5

          0481f43c7f5b88e571514182c7ed5f64

          SHA1

          6b597b3ddb06f3d68323c43a3d000452a115501d

          SHA256

          885e34ff7befbdcdb027a017843cbacdba7eebb34d3df2e3113cceb9adafe8b5

          SHA512

          a7d260045043187546a437a5d708eabffcd339648a45cc23b175fc3cba996551f696dd3b114b1630be6e23324b63906788ffe5cf93e3849b382c30d391b6d9ba

        • C:\Users\Admin\AppData\Roaming\uKyEwHirA.exe
          MD5

          04694be6bf4a97114fda8dec4f9b8f42

          SHA1

          91f4b470a65d756c32ce1967b8e5300ba70383c5

          SHA256

          ed3a96630761ee25131c40b747f50fc55aa85d5e8f631f71bbfc901dd96bac13

          SHA512

          9bec01db5b96b9a6aa9afc678aecc44bca7554b7c09588fc4504564269437995cb936c012b3f0a025e4b4cc566cec4dce8f3445ed23975fd0cecb50998e0ae27

        • C:\Users\Admin\AppData\Roaming\uKyEwHirA.exe
          MD5

          04694be6bf4a97114fda8dec4f9b8f42

          SHA1

          91f4b470a65d756c32ce1967b8e5300ba70383c5

          SHA256

          ed3a96630761ee25131c40b747f50fc55aa85d5e8f631f71bbfc901dd96bac13

          SHA512

          9bec01db5b96b9a6aa9afc678aecc44bca7554b7c09588fc4504564269437995cb936c012b3f0a025e4b4cc566cec4dce8f3445ed23975fd0cecb50998e0ae27

        • C:\Users\Admin\AppData\Roaming\windows\explorer.exe
          MD5

          04694be6bf4a97114fda8dec4f9b8f42

          SHA1

          91f4b470a65d756c32ce1967b8e5300ba70383c5

          SHA256

          ed3a96630761ee25131c40b747f50fc55aa85d5e8f631f71bbfc901dd96bac13

          SHA512

          9bec01db5b96b9a6aa9afc678aecc44bca7554b7c09588fc4504564269437995cb936c012b3f0a025e4b4cc566cec4dce8f3445ed23975fd0cecb50998e0ae27

        • C:\Users\Admin\AppData\Roaming\windows\explorer.exe
          MD5

          04694be6bf4a97114fda8dec4f9b8f42

          SHA1

          91f4b470a65d756c32ce1967b8e5300ba70383c5

          SHA256

          ed3a96630761ee25131c40b747f50fc55aa85d5e8f631f71bbfc901dd96bac13

          SHA512

          9bec01db5b96b9a6aa9afc678aecc44bca7554b7c09588fc4504564269437995cb936c012b3f0a025e4b4cc566cec4dce8f3445ed23975fd0cecb50998e0ae27

        • \Users\Admin\AppData\Local\Temp\freebl3.dll
          MD5

          ef12ab9d0b231b8f898067b2114b1bc0

          SHA1

          6d90f27b2105945f9bb77039e8b892070a5f9442

          SHA256

          2b00fc4f541ac10c94e3556ff28e30a801811c36422546a546a445aca3f410f7

          SHA512

          2aa62bfba556ad8f042942dd25aa071ff6677c257904377c1ec956fd9e862abcbf379e0cfd8c630c303a32ece75618c24e3eef58bddb705c427985b944689193

        • \Users\Admin\AppData\Local\Temp\mozglue.dll
          MD5

          75f8cc548cabf0cc800c25047e4d3124

          SHA1

          602676768f9faecd35b48c38a0632781dfbde10c

          SHA256

          fb419a60305f17359e2ac0510233ee80e845885eee60607715c67dd88e501ef0

          SHA512

          ed831c9c769aef3be253c52542cf032afa0a8fa5fe25ca704db65ee6883c608220df7102ac2b99ee9c2e599a0f5db99fd86894a4b169e68440eb1b0d0012672f

        • \Users\Admin\AppData\Local\Temp\msvcp140.dll
          MD5

          109f0f02fd37c84bfc7508d4227d7ed5

          SHA1

          ef7420141bb15ac334d3964082361a460bfdb975

          SHA256

          334e69ac9367f708ce601a6f490ff227d6c20636da5222f148b25831d22e13d4

          SHA512

          46eb62b65817365c249b48863d894b4669e20fcb3992e747cd5c9fdd57968e1b2cf7418d1c9340a89865eadda362b8db51947eb4427412eb83b35994f932fd39

        • \Users\Admin\AppData\Local\Temp\nss3.dll
          MD5

          d7858e8449004e21b01d468e9fd04b82

          SHA1

          9524352071ede21c167e7e4f106e9526dc23ef4e

          SHA256

          78758bf7f3b3b5e3477e38354acd32d787bc1286c8bd9b873471b9c195e638db

          SHA512

          1e2c981e6c0ca36c60c6e9cae9548b866d5c524df837095b30d618d9c322def7134c20de820105400dd1b58076b66d90274f67773ac6ba914f611b419babb440

        • \Users\Admin\AppData\Local\Temp\softokn3.dll
          MD5

          471c983513694ac3002590345f2be0da

          SHA1

          6612b9af4ff6830fa9b7d4193078434ef72f775b

          SHA256

          bb3ff746471116c6ad0339fa0522aa2a44a787e33a29c7b27649a054ecd4d00f

          SHA512

          a9b0fb923bc3b567e933de10b141a3e9213640e3d790b4c4d753cf220d55593ae8026102909969ba6bfc22da3b2fcd01e30a9f5a74bd14a0fdec9beaf0fb1410

        • \Users\Admin\AppData\Local\Temp\vcruntime140.dll
          MD5

          7587bf9cb4147022cd5681b015183046

          SHA1

          f2106306a8f6f0da5afb7fc765cfa0757ad5a628

          SHA256

          c40bb03199a2054dabfc7a8e01d6098e91de7193619effbd0f142a7bf031c14d

          SHA512

          0b63e4979846ceba1b1ed8470432ea6aa18cca66b5f5322d17b14bc0dfa4b2ee09ca300a016e16a01db5123e4e022820698f46d9bad1078bd24675b4b181e91f

        • memory/644-157-0x0000000000000000-mapping.dmp
        • memory/1424-151-0x0000000000405E28-mapping.dmp
        • memory/1424-163-0x0000000005620000-0x00000000056A4000-memory.dmp
          Filesize

          528KB

        • memory/1424-156-0x0000000004830000-0x000000000496C000-memory.dmp
          Filesize

          1.2MB

        • memory/1520-154-0x0000000000000000-mapping.dmp
        • memory/1520-155-0x00000000003E0000-0x00000000003E1000-memory.dmp
          Filesize

          4KB

        • memory/2056-131-0x0000000000400000-0x000000000055E000-memory.dmp
          Filesize

          1.4MB

        • memory/2056-130-0x0000000000405E28-mapping.dmp
        • memory/2056-129-0x0000000000400000-0x000000000055E000-memory.dmp
          Filesize

          1.4MB

        • memory/2068-140-0x0000000000000000-mapping.dmp
        • memory/2296-162-0x0000000000000000-mapping.dmp
        • memory/2992-170-0x0000000000000000-mapping.dmp
        • memory/3356-132-0x0000000000000000-mapping.dmp
        • memory/3680-133-0x0000000000000000-mapping.dmp
        • memory/3680-142-0x0000000005E00000-0x00000000062FE000-memory.dmp
          Filesize

          5.0MB

        • memory/3680-143-0x0000000005E00000-0x00000000062FE000-memory.dmp
          Filesize

          5.0MB

        • memory/3980-160-0x0000000000000000-mapping.dmp
        • memory/4060-128-0x0000000006800000-0x000000000686B000-memory.dmp
          Filesize

          428KB

        • memory/4060-123-0x0000000006530000-0x000000000657F000-memory.dmp
          Filesize

          316KB

        • memory/4060-122-0x00000000049A0000-0x0000000004A32000-memory.dmp
          Filesize

          584KB

        • memory/4060-120-0x00000000049A0000-0x0000000004A32000-memory.dmp
          Filesize

          584KB

        • memory/4060-121-0x00000000049A0000-0x0000000004A32000-memory.dmp
          Filesize

          584KB

        • memory/4060-119-0x0000000004A00000-0x0000000004A01000-memory.dmp
          Filesize

          4KB

        • memory/4060-118-0x00000000049A0000-0x0000000004A32000-memory.dmp
          Filesize

          584KB

        • memory/4060-114-0x0000000000150000-0x0000000000151000-memory.dmp
          Filesize

          4KB

        • memory/4060-117-0x0000000004A40000-0x0000000004A41000-memory.dmp
          Filesize

          4KB

        • memory/4060-116-0x0000000005030000-0x0000000005031000-memory.dmp
          Filesize

          4KB