Analysis

  • max time kernel
    149s
  • max time network
    148s
  • platform
    windows7_x64
  • resource
    win7v20210410
  • submitted
    19-04-2021 01:51

General

  • Target

    ADJUNTOEXTRACTO590878174787097120989222355748.exe

  • Size

    127KB

  • MD5

    163544e7689d9be18b302b75c1e6d037

  • SHA1

    98a76b052c08e51ab2420658354eed23a1f11a57

  • SHA256

    e4462cda605a876b2c8f72bcecbabd3e1abb00303a78047892ce463afef53127

  • SHA512

    c9189ae0246baa56d7f55be2e81cd2a795c3802a4b61f017131740d92fced381ffa33b1e8fe424c24bc3d4cf94ddaadb4bd73ce6db911e1c71b1ba9f7aa32b78

Score
10/10

Malware Config

Extracted

Family

remcos

C2

databasepropersonombrecomercialideasearchwords.services:3521

Signatures

  • Remcos

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

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 1 IoCs
  • Adds Run key to start application 2 TTPs 4 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.

  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 34 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ADJUNTOEXTRACTO590878174787097120989222355748.exe
    "C:\Users\Admin\AppData\Local\Temp\ADJUNTOEXTRACTO590878174787097120989222355748.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1048
    • C:\Users\Admin\AppData\Local\Temp\ADJUNTOEXTRACTO590878174787097120989222355748.exe
      "C:\Users\Admin\AppData\Local\Temp\ADJUNTOEXTRACTO590878174787097120989222355748.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious use of WriteProcessMemory
      PID:1264
      • C:\Windows\SysWOW64\WScript.exe
        "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1016
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /c "C:\Users\Admin\AppData\Roaming\System32\PxxoServicesTrialNet1.exe"
          4⤵
          • Loads dropped DLL
          • Suspicious use of WriteProcessMemory
          PID:928
          • C:\Users\Admin\AppData\Roaming\System32\PxxoServicesTrialNet1.exe
            C:\Users\Admin\AppData\Roaming\System32\PxxoServicesTrialNet1.exe
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:1776
            • C:\Users\Admin\AppData\Roaming\System32\PxxoServicesTrialNet1.exe
              "C:\Users\Admin\AppData\Roaming\System32\PxxoServicesTrialNet1.exe"
              6⤵
              • Executes dropped EXE
              • Adds Run key to start application
              • Suspicious use of SetWindowsHookEx
              PID:1336

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

1
T1112

Discovery

System Information Discovery

1
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

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

    a39af763b1c09ead3c98a6a615f377fe

    SHA1

    9bd3d39c89e47fe7072270ecc80b810103235c03

    SHA256

    a3930d7535eb768523ee52bbe69f13f857a0ae0f982d7bfc354d802f21010f8f

    SHA512

    3ed8e33ac95fd2536286b4afb2ed2a082bb5f98843478262b32263a14a5dbe0425de7b8d9662a5e482b207ebf8484ace8009ecd1881a6f6f8b0ccf3b0fdfe5da

  • C:\Users\Admin\AppData\Roaming\System32\PxxoServicesTrialNet1.exe
    MD5

    163544e7689d9be18b302b75c1e6d037

    SHA1

    98a76b052c08e51ab2420658354eed23a1f11a57

    SHA256

    e4462cda605a876b2c8f72bcecbabd3e1abb00303a78047892ce463afef53127

    SHA512

    c9189ae0246baa56d7f55be2e81cd2a795c3802a4b61f017131740d92fced381ffa33b1e8fe424c24bc3d4cf94ddaadb4bd73ce6db911e1c71b1ba9f7aa32b78

  • C:\Users\Admin\AppData\Roaming\System32\PxxoServicesTrialNet1.exe
    MD5

    163544e7689d9be18b302b75c1e6d037

    SHA1

    98a76b052c08e51ab2420658354eed23a1f11a57

    SHA256

    e4462cda605a876b2c8f72bcecbabd3e1abb00303a78047892ce463afef53127

    SHA512

    c9189ae0246baa56d7f55be2e81cd2a795c3802a4b61f017131740d92fced381ffa33b1e8fe424c24bc3d4cf94ddaadb4bd73ce6db911e1c71b1ba9f7aa32b78

  • C:\Users\Admin\AppData\Roaming\System32\PxxoServicesTrialNet1.exe
    MD5

    163544e7689d9be18b302b75c1e6d037

    SHA1

    98a76b052c08e51ab2420658354eed23a1f11a57

    SHA256

    e4462cda605a876b2c8f72bcecbabd3e1abb00303a78047892ce463afef53127

    SHA512

    c9189ae0246baa56d7f55be2e81cd2a795c3802a4b61f017131740d92fced381ffa33b1e8fe424c24bc3d4cf94ddaadb4bd73ce6db911e1c71b1ba9f7aa32b78

  • C:\Users\Admin\FgdEzluGJmODUBXWMnzAKbnNYtmftnkZcRYqJHjDNKBmVLnc
    MD5

    9d3bc982e740dbba36ea9a28ed270c56

    SHA1

    831e5831f5e03cc02ed3952d096a60c42b395422

    SHA256

    2205f82a4554237514466aed98dd02ceec4a2802af4efa5d0948fa0fd28b4036

    SHA512

    25f739abd7ce13dd43b31c1f03ea7e88f59b1ad89a75ede16f43040e091db0ca52c2535fcb06a4e3385d773f32d76ca6c011dfd53bc156199a93596c16e43f43

  • \Users\Admin\AppData\Roaming\System32\PxxoServicesTrialNet1.exe
    MD5

    163544e7689d9be18b302b75c1e6d037

    SHA1

    98a76b052c08e51ab2420658354eed23a1f11a57

    SHA256

    e4462cda605a876b2c8f72bcecbabd3e1abb00303a78047892ce463afef53127

    SHA512

    c9189ae0246baa56d7f55be2e81cd2a795c3802a4b61f017131740d92fced381ffa33b1e8fe424c24bc3d4cf94ddaadb4bd73ce6db911e1c71b1ba9f7aa32b78

  • memory/928-71-0x0000000000000000-mapping.dmp
  • memory/1016-67-0x0000000000000000-mapping.dmp
  • memory/1048-62-0x0000000004A80000-0x0000000004A81000-memory.dmp
    Filesize

    4KB

  • memory/1048-61-0x0000000075721000-0x0000000075723000-memory.dmp
    Filesize

    8KB

  • memory/1048-59-0x00000000008F0000-0x00000000008F1000-memory.dmp
    Filesize

    4KB

  • memory/1048-63-0x0000000000310000-0x000000000033B000-memory.dmp
    Filesize

    172KB

  • memory/1264-70-0x0000000000400000-0x0000000000422000-memory.dmp
    Filesize

    136KB

  • memory/1264-65-0x0000000000413FA4-mapping.dmp
  • memory/1264-64-0x0000000000400000-0x0000000000422000-memory.dmp
    Filesize

    136KB

  • memory/1336-83-0x0000000000413FA4-mapping.dmp
  • memory/1336-86-0x0000000000400000-0x0000000000422000-memory.dmp
    Filesize

    136KB

  • memory/1776-74-0x0000000000000000-mapping.dmp
  • memory/1776-76-0x0000000000D70000-0x0000000000D71000-memory.dmp
    Filesize

    4KB

  • memory/1776-81-0x0000000004490000-0x0000000004491000-memory.dmp
    Filesize

    4KB