Analysis

  • max time kernel
    153s
  • max time network
    128s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03-02-2023 14:09

General

  • Target

    PURCHASE ORDER_16096.exe

  • Size

    7KB

  • MD5

    b359f4af5c88b1e237db9738415b7682

  • SHA1

    d7fa6d87594ea4d8b5740d54fdc204b08f4e9439

  • SHA256

    53ddb9a75bca1115a66745b28086afbd394cef38f8437dda641b1219111df8cd

  • SHA512

    6d4f06f36c608d3202d29629f9d9a70eadfbffbb23c7c074fbb610ed9e1926bf6e04c8dfecbbaf1d575fb2d0385d237aff2dbda322b092d4ef7728091eb596cb

  • SSDEEP

    96:xtEsKVeCVIP7bLp8LAn5c8aY1ej/kKV+J2qzNt:xUVVIP7bLrEOejcKYx

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

194.180.49.17:28282

Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    rdfghfgjkgoighjc.exe

  • copy_folder

    Remcos

  • 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-PC1DJ2

  • 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.

  • NirSoft MailPassView 1 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 2 IoCs

    Password recovery tool for various web browsers

  • Nirsoft 4 IoCs
  • Checks computer location settings 2 TTPs 3 IoCs

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

  • Executes dropped EXE 8 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 10 IoCs
  • Suspicious use of SetThreadContext 5 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 10 IoCs
  • Suspicious behavior: MapViewOfSection 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 54 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\PURCHASE ORDER_16096.exe
    "C:\Users\Admin\AppData\Local\Temp\PURCHASE ORDER_16096.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1336
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMgAwAA==
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1908
    • C:\Users\Admin\AppData\Local\Temp\PURCHASE ORDER_16096.exe
      "C:\Users\Admin\AppData\Local\Temp\PURCHASE ORDER_16096.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious use of WriteProcessMemory
      PID:4044
      • C:\ProgramData\Remcos\rdfghfgjkgoighjc.exe
        "C:\ProgramData\Remcos\rdfghfgjkgoighjc.exe"
        3⤵
        • Checks computer location settings
        • Executes dropped EXE
        • Adds Run key to start application
        • Suspicious use of SetThreadContext
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2096
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMgAwAA==
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:1604
        • C:\ProgramData\Remcos\rdfghfgjkgoighjc.exe
          C:\ProgramData\Remcos\rdfghfgjkgoighjc.exe
          4⤵
          • Executes dropped EXE
          • Adds Run key to start application
          • Suspicious use of SetThreadContext
          • Suspicious behavior: MapViewOfSection
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:1216
          • C:\ProgramData\Remcos\rdfghfgjkgoighjc.exe
            C:\ProgramData\Remcos\rdfghfgjkgoighjc.exe /stext "C:\Users\Admin\AppData\Local\Temp\bsuhyazlmmkelmkinopvqieadiqb"
            5⤵
            • Executes dropped EXE
            • Suspicious behavior: EnumeratesProcesses
            PID:5036
          • C:\ProgramData\Remcos\rdfghfgjkgoighjc.exe
            C:\ProgramData\Remcos\rdfghfgjkgoighjc.exe /stext "C:\Users\Admin\AppData\Local\Temp\mmazytjfaucjosyuezcxbvzrmozkvrt"
            5⤵
            • Executes dropped EXE
            PID:5056
          • C:\ProgramData\Remcos\rdfghfgjkgoighjc.exe
            C:\ProgramData\Remcos\rdfghfgjkgoighjc.exe /stext "C:\Users\Admin\AppData\Local\Temp\mmazytjfaucjosyuezcxbvzrmozkvrt"
            5⤵
            • Executes dropped EXE
            PID:2904
          • C:\ProgramData\Remcos\rdfghfgjkgoighjc.exe
            C:\ProgramData\Remcos\rdfghfgjkgoighjc.exe /stext "C:\Users\Admin\AppData\Local\Temp\mmazytjfaucjosyuezcxbvzrmozkvrt"
            5⤵
            • Executes dropped EXE
            PID:2128
          • C:\ProgramData\Remcos\rdfghfgjkgoighjc.exe
            C:\ProgramData\Remcos\rdfghfgjkgoighjc.exe /stext "C:\Users\Admin\AppData\Local\Temp\mmazytjfaucjosyuezcxbvzrmozkvrt"
            5⤵
            • Executes dropped EXE
            • Accesses Microsoft Outlook accounts
            PID:1008
          • C:\ProgramData\Remcos\rdfghfgjkgoighjc.exe
            C:\ProgramData\Remcos\rdfghfgjkgoighjc.exe /stext "C:\Users\Admin\AppData\Local\Temp\oofk"
            5⤵
            • Executes dropped EXE
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:1844

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

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\Remcos\rdfghfgjkgoighjc.exe
    Filesize

    7KB

    MD5

    b359f4af5c88b1e237db9738415b7682

    SHA1

    d7fa6d87594ea4d8b5740d54fdc204b08f4e9439

    SHA256

    53ddb9a75bca1115a66745b28086afbd394cef38f8437dda641b1219111df8cd

    SHA512

    6d4f06f36c608d3202d29629f9d9a70eadfbffbb23c7c074fbb610ed9e1926bf6e04c8dfecbbaf1d575fb2d0385d237aff2dbda322b092d4ef7728091eb596cb

  • C:\ProgramData\Remcos\rdfghfgjkgoighjc.exe
    Filesize

    7KB

    MD5

    b359f4af5c88b1e237db9738415b7682

    SHA1

    d7fa6d87594ea4d8b5740d54fdc204b08f4e9439

    SHA256

    53ddb9a75bca1115a66745b28086afbd394cef38f8437dda641b1219111df8cd

    SHA512

    6d4f06f36c608d3202d29629f9d9a70eadfbffbb23c7c074fbb610ed9e1926bf6e04c8dfecbbaf1d575fb2d0385d237aff2dbda322b092d4ef7728091eb596cb

  • C:\ProgramData\Remcos\rdfghfgjkgoighjc.exe
    Filesize

    7KB

    MD5

    b359f4af5c88b1e237db9738415b7682

    SHA1

    d7fa6d87594ea4d8b5740d54fdc204b08f4e9439

    SHA256

    53ddb9a75bca1115a66745b28086afbd394cef38f8437dda641b1219111df8cd

    SHA512

    6d4f06f36c608d3202d29629f9d9a70eadfbffbb23c7c074fbb610ed9e1926bf6e04c8dfecbbaf1d575fb2d0385d237aff2dbda322b092d4ef7728091eb596cb

  • C:\ProgramData\Remcos\rdfghfgjkgoighjc.exe
    Filesize

    7KB

    MD5

    b359f4af5c88b1e237db9738415b7682

    SHA1

    d7fa6d87594ea4d8b5740d54fdc204b08f4e9439

    SHA256

    53ddb9a75bca1115a66745b28086afbd394cef38f8437dda641b1219111df8cd

    SHA512

    6d4f06f36c608d3202d29629f9d9a70eadfbffbb23c7c074fbb610ed9e1926bf6e04c8dfecbbaf1d575fb2d0385d237aff2dbda322b092d4ef7728091eb596cb

  • C:\ProgramData\Remcos\rdfghfgjkgoighjc.exe
    Filesize

    7KB

    MD5

    b359f4af5c88b1e237db9738415b7682

    SHA1

    d7fa6d87594ea4d8b5740d54fdc204b08f4e9439

    SHA256

    53ddb9a75bca1115a66745b28086afbd394cef38f8437dda641b1219111df8cd

    SHA512

    6d4f06f36c608d3202d29629f9d9a70eadfbffbb23c7c074fbb610ed9e1926bf6e04c8dfecbbaf1d575fb2d0385d237aff2dbda322b092d4ef7728091eb596cb

  • C:\ProgramData\Remcos\rdfghfgjkgoighjc.exe
    Filesize

    7KB

    MD5

    b359f4af5c88b1e237db9738415b7682

    SHA1

    d7fa6d87594ea4d8b5740d54fdc204b08f4e9439

    SHA256

    53ddb9a75bca1115a66745b28086afbd394cef38f8437dda641b1219111df8cd

    SHA512

    6d4f06f36c608d3202d29629f9d9a70eadfbffbb23c7c074fbb610ed9e1926bf6e04c8dfecbbaf1d575fb2d0385d237aff2dbda322b092d4ef7728091eb596cb

  • C:\ProgramData\Remcos\rdfghfgjkgoighjc.exe
    Filesize

    7KB

    MD5

    b359f4af5c88b1e237db9738415b7682

    SHA1

    d7fa6d87594ea4d8b5740d54fdc204b08f4e9439

    SHA256

    53ddb9a75bca1115a66745b28086afbd394cef38f8437dda641b1219111df8cd

    SHA512

    6d4f06f36c608d3202d29629f9d9a70eadfbffbb23c7c074fbb610ed9e1926bf6e04c8dfecbbaf1d575fb2d0385d237aff2dbda322b092d4ef7728091eb596cb

  • C:\ProgramData\Remcos\rdfghfgjkgoighjc.exe
    Filesize

    7KB

    MD5

    b359f4af5c88b1e237db9738415b7682

    SHA1

    d7fa6d87594ea4d8b5740d54fdc204b08f4e9439

    SHA256

    53ddb9a75bca1115a66745b28086afbd394cef38f8437dda641b1219111df8cd

    SHA512

    6d4f06f36c608d3202d29629f9d9a70eadfbffbb23c7c074fbb610ed9e1926bf6e04c8dfecbbaf1d575fb2d0385d237aff2dbda322b092d4ef7728091eb596cb

  • C:\ProgramData\Remcos\rdfghfgjkgoighjc.exe
    Filesize

    7KB

    MD5

    b359f4af5c88b1e237db9738415b7682

    SHA1

    d7fa6d87594ea4d8b5740d54fdc204b08f4e9439

    SHA256

    53ddb9a75bca1115a66745b28086afbd394cef38f8437dda641b1219111df8cd

    SHA512

    6d4f06f36c608d3202d29629f9d9a70eadfbffbb23c7c074fbb610ed9e1926bf6e04c8dfecbbaf1d575fb2d0385d237aff2dbda322b092d4ef7728091eb596cb

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log
    Filesize

    1KB

    MD5

    4280e36a29fa31c01e4d8b2ba726a0d8

    SHA1

    c485c2c9ce0a99747b18d899b71dfa9a64dabe32

    SHA256

    e2486a1bdcba80dad6dd6210d7374bd70ae196a523c06ceda71370fd3ea78359

    SHA512

    494fe5f0ade03669e5830bed93c964d69b86629440148d7b0881cf53203fd89443ebff9b4d1ee9d96244f62af6edede622d9eacba37f80f389a0d522e4ad4ea4

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\ModuleAnalysisCache
    Filesize

    53KB

    MD5

    06ad34f9739c5159b4d92d702545bd49

    SHA1

    9152a0d4f153f3f40f7e606be75f81b582ee0c17

    SHA256

    474813b625f00710f29fa3b488235a6a22201851efb336bddf60d7d24a66bfba

    SHA512

    c272cd28ae164d465b779163ba9eca6a28261376414c6bbdfbd9f2128adb7f7ff1420e536b4d6000d0301ded2ec9036bc5c657588458bff41f176bdce8d74f92

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

    16KB

    MD5

    e03d2decc8f0063012b622649f607ec9

    SHA1

    bd220aa49ea457b198d7eeae2ba09560d40357f7

    SHA256

    419c4a3a9a694876bea9a0bc4e30533ee1eff69481244d56695bea232c0110bb

    SHA512

    f5fe3a5c9c3f9d6ba0ebf5fc8380b04dc673d89faef5a00bd62aef0f45a7556be001020ce2eb4b75fed16f7bc4768e79df256eda4f2c6d9a04dd412721afe99d

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

    4KB

    MD5

    8937ec50df53642622ba77b9b2dfe88f

    SHA1

    76e19a0efe5cf6eac0a3bbb81f4a3f12d46d095d

    SHA256

    e35d3c41759c879026d522ee9c6d5e8afb7ec045856d456d50170306c321f363

    SHA512

    6aedc7c3c8b5b883f0f944fc8da54d4c0ae85afc8278765c229f4efa28776cba4b37c80bfa7035f358a251c5ef816c0bde805ce70e18052ee291f5d27e07153c

  • C:\Users\Admin\AppData\Roaming\Zwpfblvosjv\Phecxlkxbf.exe
    MD5

    d41d8cd98f00b204e9800998ecf8427e

    SHA1

    da39a3ee5e6b4b0d3255bfef95601890afd80709

    SHA256

    e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

    SHA512

    cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

  • memory/1008-169-0x0000000000000000-mapping.dmp
  • memory/1008-173-0x0000000000400000-0x0000000000457000-memory.dmp
    Filesize

    348KB

  • memory/1216-158-0x0000000000400000-0x0000000000480000-memory.dmp
    Filesize

    512KB

  • memory/1216-160-0x0000000000400000-0x0000000000480000-memory.dmp
    Filesize

    512KB

  • memory/1216-159-0x0000000000400000-0x0000000000480000-memory.dmp
    Filesize

    512KB

  • memory/1216-178-0x0000000010000000-0x0000000010019000-memory.dmp
    Filesize

    100KB

  • memory/1216-183-0x0000000000400000-0x0000000000480000-memory.dmp
    Filesize

    512KB

  • memory/1216-182-0x0000000010000000-0x0000000010019000-memory.dmp
    Filesize

    100KB

  • memory/1216-181-0x0000000010000000-0x0000000010019000-memory.dmp
    Filesize

    100KB

  • memory/1216-155-0x0000000000000000-mapping.dmp
  • memory/1336-133-0x0000000007920000-0x0000000007942000-memory.dmp
    Filesize

    136KB

  • memory/1336-132-0x0000000000790000-0x0000000000798000-memory.dmp
    Filesize

    32KB

  • memory/1604-150-0x0000000000000000-mapping.dmp
  • memory/1844-174-0x0000000000400000-0x0000000000424000-memory.dmp
    Filesize

    144KB

  • memory/1844-171-0x0000000000000000-mapping.dmp
  • memory/1908-141-0x0000000006D20000-0x0000000006D3A000-memory.dmp
    Filesize

    104KB

  • memory/1908-134-0x0000000000000000-mapping.dmp
  • memory/1908-140-0x00000000080A0000-0x000000000871A000-memory.dmp
    Filesize

    6.5MB

  • memory/1908-139-0x0000000006830000-0x000000000684E000-memory.dmp
    Filesize

    120KB

  • memory/1908-138-0x00000000061C0000-0x0000000006226000-memory.dmp
    Filesize

    408KB

  • memory/1908-137-0x0000000006150000-0x00000000061B6000-memory.dmp
    Filesize

    408KB

  • memory/1908-136-0x0000000005950000-0x0000000005F78000-memory.dmp
    Filesize

    6.2MB

  • memory/1908-135-0x0000000005290000-0x00000000052C6000-memory.dmp
    Filesize

    216KB

  • memory/2096-146-0x0000000000000000-mapping.dmp
  • memory/2128-165-0x0000000000000000-mapping.dmp
  • memory/2904-167-0x0000000000000000-mapping.dmp
  • memory/4044-149-0x0000000000400000-0x0000000000480000-memory.dmp
    Filesize

    512KB

  • memory/4044-142-0x0000000000000000-mapping.dmp
  • memory/4044-143-0x0000000000400000-0x0000000000480000-memory.dmp
    Filesize

    512KB

  • memory/4044-144-0x0000000000400000-0x0000000000480000-memory.dmp
    Filesize

    512KB

  • memory/4044-145-0x0000000000400000-0x0000000000480000-memory.dmp
    Filesize

    512KB

  • memory/5036-175-0x0000000000400000-0x0000000000478000-memory.dmp
    Filesize

    480KB

  • memory/5036-176-0x0000000000400000-0x0000000000478000-memory.dmp
    Filesize

    480KB

  • memory/5036-161-0x0000000000000000-mapping.dmp
  • memory/5056-163-0x0000000000000000-mapping.dmp