Analysis

  • max time kernel
    150s
  • max time network
    153s
  • platform
    windows7_x64
  • resource
    win7-20231020-en
  • resource tags

    arch:x64arch:x86image:win7-20231020-enlocale:en-usos:windows7-x64system
  • submitted
    02-12-2023 09:38

General

  • Target

    03e1b46d2f7cd22416f24a7d5f4eabc8dd2b3de80b8b8cdc8d360f02ed1d931f.exe

  • Size

    975KB

  • MD5

    986a1e015e13471ba117c834efdf7368

  • SHA1

    81d6be82bb5d840c10d7f0fad9312ab860715717

  • SHA256

    03e1b46d2f7cd22416f24a7d5f4eabc8dd2b3de80b8b8cdc8d360f02ed1d931f

  • SHA512

    fc41467120339f084f50ac4b865f14d53a8018f07312baea4284db6e80c974eb7fce53d055da1bb10fa300d7c92e6c34e59fa3ec72cc61165f1f38a28c1c3a8b

  • SSDEEP

    24576:rV1x3UYz0awm1X5T5I7qcBZdepQ3LE3ES5QQgvC:Lx3vvNnVI+cBZspQbEUWZ

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

107.175.229.139:8087

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-IZFV1M

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

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious behavior: MapViewOfSection 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 36 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\03e1b46d2f7cd22416f24a7d5f4eabc8dd2b3de80b8b8cdc8d360f02ed1d931f.exe
    "C:\Users\Admin\AppData\Local\Temp\03e1b46d2f7cd22416f24a7d5f4eabc8dd2b3de80b8b8cdc8d360f02ed1d931f.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2140
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\xPlvmuo.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1040
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\xPlvmuo" /XML "C:\Users\Admin\AppData\Local\Temp\tmpE9C3.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1640
    • C:\Users\Admin\AppData\Local\Temp\03e1b46d2f7cd22416f24a7d5f4eabc8dd2b3de80b8b8cdc8d360f02ed1d931f.exe
      "C:\Users\Admin\AppData\Local\Temp\03e1b46d2f7cd22416f24a7d5f4eabc8dd2b3de80b8b8cdc8d360f02ed1d931f.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2156
      • C:\Users\Admin\AppData\Local\Temp\03e1b46d2f7cd22416f24a7d5f4eabc8dd2b3de80b8b8cdc8d360f02ed1d931f.exe
        C:\Users\Admin\AppData\Local\Temp\03e1b46d2f7cd22416f24a7d5f4eabc8dd2b3de80b8b8cdc8d360f02ed1d931f.exe /stext "C:\Users\Admin\AppData\Local\Temp\ggbbbajaxkjwqzhntnck"
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        PID:2120
      • C:\Users\Admin\AppData\Local\Temp\03e1b46d2f7cd22416f24a7d5f4eabc8dd2b3de80b8b8cdc8d360f02ed1d931f.exe
        C:\Users\Admin\AppData\Local\Temp\03e1b46d2f7cd22416f24a7d5f4eabc8dd2b3de80b8b8cdc8d360f02ed1d931f.exe /stext "C:\Users\Admin\AppData\Local\Temp\qahucsuulsbaafdrkypmbqtq"
        3⤵
        • Accesses Microsoft Outlook accounts
        PID:2816
      • C:\Users\Admin\AppData\Local\Temp\03e1b46d2f7cd22416f24a7d5f4eabc8dd2b3de80b8b8cdc8d360f02ed1d931f.exe
        C:\Users\Admin\AppData\Local\Temp\03e1b46d2f7cd22416f24a7d5f4eabc8dd2b3de80b8b8cdc8d360f02ed1d931f.exe /stext "C:\Users\Admin\AppData\Local\Temp\aummdkfvzatndlrvtijfmcnhtig"
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:1944

Network

MITRE ATT&CK Matrix ATT&CK v13

Execution

Scheduled Task/Job

1
T1053

Persistence

Scheduled Task/Job

1
T1053

Privilege Escalation

Scheduled Task/Job

1
T1053

Credential Access

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Discovery

System Information Discovery

1
T1082

Collection

Data from Local System

1
T1005

Email Collection

1
T1114

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\ProgramData\remcos\logs.dat
    Filesize

    144B

    MD5

    b3191456a7de7905e2c821e355d8026b

    SHA1

    d225c04a849b355794d5a0cf91983fbd543332fd

    SHA256

    a83a0641b3ec97424af2b07d8d4cdbd36f5c3247bc998f0fb0c69027d129edbd

    SHA512

    28139cca547ec4b347cb906344bcb1e922eb1d8160f1989df2e54a72a14aaf1f2725fd9ba95afda123703fbedee54d19a72e470bb6e61667481510b8d7e2eefc

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

    2B

    MD5

    f3b25701fe362ec84616a93a45ce9998

    SHA1

    d62636d8caec13f04e28442a0a6fa1afeb024bbb

    SHA256

    b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

    SHA512

    98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

  • C:\Users\Admin\AppData\Local\Temp\tmpE9C3.tmp
    Filesize

    1KB

    MD5

    3d75caac5a4fb13243d6290dc48402b6

    SHA1

    7e6ce3927bb35894c8855e9ba9fd21043c5eb204

    SHA256

    1b136e790c1d39ffa3a6b40d72806c8b880cb4ae8d121e34f70afdc95882a14d

    SHA512

    dc34d2ff63f794a0b80de73154af5fb2ed2c65a2a0c677f70ec76663cf794b0af2f90845c935360c0081833abcf7d82c7c708d23fcb81bd05c9f0f97d6fd2b38

  • memory/1040-39-0x000000006EFB0000-0x000000006F55B000-memory.dmp
    Filesize

    5.7MB

  • memory/1040-41-0x0000000002700000-0x0000000002740000-memory.dmp
    Filesize

    256KB

  • memory/1040-48-0x000000006EFB0000-0x000000006F55B000-memory.dmp
    Filesize

    5.7MB

  • memory/1040-40-0x0000000002700000-0x0000000002740000-memory.dmp
    Filesize

    256KB

  • memory/1944-67-0x0000000000400000-0x0000000000424000-memory.dmp
    Filesize

    144KB

  • memory/1944-69-0x0000000000400000-0x0000000000424000-memory.dmp
    Filesize

    144KB

  • memory/1944-68-0x0000000000400000-0x0000000000424000-memory.dmp
    Filesize

    144KB

  • memory/1944-66-0x0000000000400000-0x0000000000424000-memory.dmp
    Filesize

    144KB

  • memory/1944-61-0x0000000000400000-0x0000000000424000-memory.dmp
    Filesize

    144KB

  • memory/2120-51-0x0000000000400000-0x0000000000478000-memory.dmp
    Filesize

    480KB

  • memory/2120-54-0x0000000000400000-0x0000000000478000-memory.dmp
    Filesize

    480KB

  • memory/2120-74-0x0000000000400000-0x0000000000478000-memory.dmp
    Filesize

    480KB

  • memory/2120-56-0x0000000000400000-0x0000000000478000-memory.dmp
    Filesize

    480KB

  • memory/2140-6-0x0000000005F10000-0x0000000005FC8000-memory.dmp
    Filesize

    736KB

  • memory/2140-0-0x00000000012F0000-0x00000000013EA000-memory.dmp
    Filesize

    1000KB

  • memory/2140-32-0x0000000074B60000-0x000000007524E000-memory.dmp
    Filesize

    6.9MB

  • memory/2140-5-0x0000000000390000-0x000000000039A000-memory.dmp
    Filesize

    40KB

  • memory/2140-4-0x0000000000340000-0x0000000000348000-memory.dmp
    Filesize

    32KB

  • memory/2140-3-0x0000000000320000-0x0000000000336000-memory.dmp
    Filesize

    88KB

  • memory/2140-2-0x0000000004E70000-0x0000000004EB0000-memory.dmp
    Filesize

    256KB

  • memory/2140-1-0x0000000074B60000-0x000000007524E000-memory.dmp
    Filesize

    6.9MB

  • memory/2156-28-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
    Filesize

    4KB

  • memory/2156-14-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2156-37-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2156-42-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2156-43-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2156-44-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2156-45-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2156-47-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2156-36-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2156-34-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2156-120-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2156-33-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2156-30-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2156-119-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2156-112-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2156-26-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2156-111-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2156-22-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2156-20-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2156-18-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2156-16-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2156-38-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2156-13-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2156-77-0x0000000010000000-0x0000000010019000-memory.dmp
    Filesize

    100KB

  • memory/2156-81-0x0000000010000000-0x0000000010019000-memory.dmp
    Filesize

    100KB

  • memory/2156-84-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2156-83-0x0000000010000000-0x0000000010019000-memory.dmp
    Filesize

    100KB

  • memory/2156-82-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2156-85-0x0000000010000000-0x0000000010019000-memory.dmp
    Filesize

    100KB

  • memory/2156-86-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2156-104-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2156-12-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2156-92-0x0000000010000000-0x0000000010019000-memory.dmp
    Filesize

    100KB

  • memory/2156-95-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2156-96-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2156-103-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2816-87-0x0000000000400000-0x0000000000457000-memory.dmp
    Filesize

    348KB

  • memory/2816-65-0x0000000000400000-0x0000000000457000-memory.dmp
    Filesize

    348KB

  • memory/2816-62-0x0000000000400000-0x0000000000457000-memory.dmp
    Filesize

    348KB

  • memory/2816-57-0x0000000000400000-0x0000000000457000-memory.dmp
    Filesize

    348KB

  • memory/2816-53-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
    Filesize

    4KB