Analysis

  • max time kernel
    150s
  • max time network
    132s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    05-10-2022 15:00

General

  • Target

    PO_No._ANOP0658.exe

  • Size

    7KB

  • MD5

    bf66440c894e2c3691b58423deb5a96a

  • SHA1

    6a0d775b272c09dd4f7b1b3269d5497aa9e0bbc8

  • SHA256

    8af0a92b4f923ce464380fb0f5dc8203b4d00211b239e87d814ad44b620d63e7

  • SHA512

    989da9407ec44ccca4e3663746cecdb1fd1400cb66b486e4b56a69e6116589be8d1b317f4db5fb9e9c02b728f1d2e173c18ad6c8bd2539bfb8818f615e0db7f8

  • SSDEEP

    96:hM+yDs4I3dsoS3iJA9W2uavvDePHK5GIR6oP959xzNtR:hM+6sR2oS3lE2umbePHK5GIvbpX

Malware Config

Extracted

Family

remcos

Botnet

50005

C2

45.155.165.117:50005

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

    jubjutgwfkpjgsh-G1HYQL

  • 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 2 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 1 IoCs

    Password recovery tool for various web browsers

  • Nirsoft 4 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 1 IoCs
  • Suspicious use of SetThreadContext 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious behavior: MapViewOfSection 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 32 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\PO_No._ANOP0658.exe
    "C:\Users\Admin\AppData\Local\Temp\PO_No._ANOP0658.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1492
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAANQAyAA==
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1964
    • C:\Users\Admin\AppData\Local\Temp\PO_No._ANOP0658.exe
      C:\Users\Admin\AppData\Local\Temp\PO_No._ANOP0658.exe
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of WriteProcessMemory
      PID:1120
      • C:\Users\Admin\AppData\Local\Temp\PO_No._ANOP0658.exe
        C:\Users\Admin\AppData\Local\Temp\PO_No._ANOP0658.exe /stext "C:\Users\Admin\AppData\Local\Temp\zdvxtogsdsvfwqlruhffqwhvhetn"
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        PID:864
      • C:\Users\Admin\AppData\Local\Temp\PO_No._ANOP0658.exe
        C:\Users\Admin\AppData\Local\Temp\PO_No._ANOP0658.exe /stext "C:\Users\Admin\AppData\Local\Temp\bgapmhqtzaokyehvmrsgtbueikdwtfo"
        3⤵
        • Accesses Microsoft Outlook accounts
        PID:2028
      • C:\Users\Admin\AppData\Local\Temp\PO_No._ANOP0658.exe
        C:\Users\Admin\AppData\Local\Temp\PO_No._ANOP0658.exe /stext "C:\Users\Admin\AppData\Local\Temp\laoinzbnnigxikvzvcfadopvrzufuqmjtp"
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:1324

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

Collection

Data from Local System

1
T1005

Email Collection

1
T1114

Replay Monitor

Loading Replay Monitor...

Downloads

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

    2B

    MD5

    f3b25701fe362ec84616a93a45ce9998

    SHA1

    d62636d8caec13f04e28442a0a6fa1afeb024bbb

    SHA256

    b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

    SHA512

    98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

  • memory/864-81-0x0000000000476274-mapping.dmp
  • memory/864-88-0x0000000000400000-0x0000000000478000-memory.dmp
    Filesize

    480KB

  • memory/1120-66-0x0000000000400000-0x000000000047F000-memory.dmp
    Filesize

    508KB

  • memory/1120-69-0x0000000000400000-0x000000000047F000-memory.dmp
    Filesize

    508KB

  • memory/1120-80-0x0000000000400000-0x000000000047F000-memory.dmp
    Filesize

    508KB

  • memory/1120-79-0x0000000000400000-0x000000000047F000-memory.dmp
    Filesize

    508KB

  • memory/1120-76-0x00000000004327A4-mapping.dmp
  • memory/1120-63-0x0000000000400000-0x000000000047F000-memory.dmp
    Filesize

    508KB

  • memory/1120-64-0x0000000000400000-0x000000000047F000-memory.dmp
    Filesize

    508KB

  • memory/1120-75-0x0000000000400000-0x000000000047F000-memory.dmp
    Filesize

    508KB

  • memory/1120-68-0x0000000000400000-0x000000000047F000-memory.dmp
    Filesize

    508KB

  • memory/1120-92-0x0000000000400000-0x000000000047F000-memory.dmp
    Filesize

    508KB

  • memory/1120-70-0x0000000000400000-0x000000000047F000-memory.dmp
    Filesize

    508KB

  • memory/1120-71-0x0000000000400000-0x000000000047F000-memory.dmp
    Filesize

    508KB

  • memory/1120-73-0x0000000000400000-0x000000000047F000-memory.dmp
    Filesize

    508KB

  • memory/1324-83-0x0000000000422206-mapping.dmp
  • memory/1324-87-0x0000000000400000-0x0000000000424000-memory.dmp
    Filesize

    144KB

  • memory/1492-54-0x0000000000D80000-0x0000000000D88000-memory.dmp
    Filesize

    32KB

  • memory/1492-56-0x0000000005460000-0x0000000005546000-memory.dmp
    Filesize

    920KB

  • memory/1492-57-0x00000000058D0000-0x0000000005962000-memory.dmp
    Filesize

    584KB

  • memory/1492-55-0x0000000076121000-0x0000000076123000-memory.dmp
    Filesize

    8KB

  • memory/1964-62-0x000000006F520000-0x000000006FACB000-memory.dmp
    Filesize

    5.7MB

  • memory/1964-61-0x000000006F520000-0x000000006FACB000-memory.dmp
    Filesize

    5.7MB

  • memory/1964-60-0x000000006F520000-0x000000006FACB000-memory.dmp
    Filesize

    5.7MB

  • memory/1964-58-0x0000000000000000-mapping.dmp
  • memory/2028-82-0x0000000000455238-mapping.dmp
  • memory/2028-90-0x0000000000400000-0x0000000000457000-memory.dmp
    Filesize

    348KB

  • memory/2028-91-0x0000000000400000-0x0000000000457000-memory.dmp
    Filesize

    348KB