Analysis

  • max time kernel
    150s
  • max time network
    144s
  • platform
    windows7_x64
  • resource
    win7v20210408
  • submitted
    26-04-2021 04:01

General

  • Target

    EXTRACTOSERFINANZA894978636268808051252452885.exe

  • Size

    179KB

  • MD5

    be5fb23d73970ef4c664059d1584b709

  • SHA1

    2c76f4e442221e65c37cf569da508544d0b99602

  • SHA256

    d4752bb762255005415e0dfd254fc06a6d5c432775f35c73e18b2e5c7ecd3b06

  • SHA512

    ca27abdeca077b63ea61419d69027acd83d79bfc1676a0932ae530125a08cc98478e4940bb4b6f59308efa5054c6f30d2a31010af503ceb70ceba88133dadb1e

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\EXTRACTOSERFINANZA894978636268808051252452885.exe
    "C:\Users\Admin\AppData\Local\Temp\EXTRACTOSERFINANZA894978636268808051252452885.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1776
    • C:\Users\Admin\AppData\Local\Temp\EXTRACTOSERFINANZA894978636268808051252452885.exe
      "C:\Users\Admin\AppData\Local\Temp\EXTRACTOSERFINANZA894978636268808051252452885.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious use of WriteProcessMemory
      PID:1296
      • C:\Windows\SysWOW64\WScript.exe
        "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1520
        • 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:752
          • 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:1692
            • 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:1216

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\63LP5fm7G99a6
    MD5

    c89f9a012dfb160e89ef47c79bef5a8a

    SHA1

    e71e79883c1941dca858890a4ce9f09b02ccc4ac

    SHA256

    6d4e91f0ea4289f7e702af0100c1f52d7bd8fef34c5b9da385e91b29e5c8ca41

    SHA512

    24d65df10edf3c9b184f1bf7e535b8978bd10d6dcdaa5c21923e1792b78293fc2b8641bec84571ac238b2aa76b162109c068a66c19d1a7ef4f7e140d418d0596

  • 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

    be5fb23d73970ef4c664059d1584b709

    SHA1

    2c76f4e442221e65c37cf569da508544d0b99602

    SHA256

    d4752bb762255005415e0dfd254fc06a6d5c432775f35c73e18b2e5c7ecd3b06

    SHA512

    ca27abdeca077b63ea61419d69027acd83d79bfc1676a0932ae530125a08cc98478e4940bb4b6f59308efa5054c6f30d2a31010af503ceb70ceba88133dadb1e

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

    be5fb23d73970ef4c664059d1584b709

    SHA1

    2c76f4e442221e65c37cf569da508544d0b99602

    SHA256

    d4752bb762255005415e0dfd254fc06a6d5c432775f35c73e18b2e5c7ecd3b06

    SHA512

    ca27abdeca077b63ea61419d69027acd83d79bfc1676a0932ae530125a08cc98478e4940bb4b6f59308efa5054c6f30d2a31010af503ceb70ceba88133dadb1e

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

    be5fb23d73970ef4c664059d1584b709

    SHA1

    2c76f4e442221e65c37cf569da508544d0b99602

    SHA256

    d4752bb762255005415e0dfd254fc06a6d5c432775f35c73e18b2e5c7ecd3b06

    SHA512

    ca27abdeca077b63ea61419d69027acd83d79bfc1676a0932ae530125a08cc98478e4940bb4b6f59308efa5054c6f30d2a31010af503ceb70ceba88133dadb1e

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

    be5fb23d73970ef4c664059d1584b709

    SHA1

    2c76f4e442221e65c37cf569da508544d0b99602

    SHA256

    d4752bb762255005415e0dfd254fc06a6d5c432775f35c73e18b2e5c7ecd3b06

    SHA512

    ca27abdeca077b63ea61419d69027acd83d79bfc1676a0932ae530125a08cc98478e4940bb4b6f59308efa5054c6f30d2a31010af503ceb70ceba88133dadb1e

  • memory/752-72-0x0000000000000000-mapping.dmp
  • memory/1216-83-0x0000000000413FA4-mapping.dmp
  • memory/1216-86-0x0000000000400000-0x0000000000422000-memory.dmp
    Filesize

    136KB

  • memory/1296-66-0x0000000000413FA4-mapping.dmp
  • memory/1296-71-0x0000000000400000-0x0000000000422000-memory.dmp
    Filesize

    136KB

  • memory/1296-65-0x0000000000400000-0x0000000000422000-memory.dmp
    Filesize

    136KB

  • memory/1520-68-0x0000000000000000-mapping.dmp
  • memory/1692-75-0x0000000000000000-mapping.dmp
  • memory/1692-77-0x0000000001130000-0x0000000001131000-memory.dmp
    Filesize

    4KB

  • memory/1692-81-0x0000000004DF0000-0x0000000004DF1000-memory.dmp
    Filesize

    4KB

  • memory/1776-63-0x0000000004B40000-0x0000000004B41000-memory.dmp
    Filesize

    4KB

  • memory/1776-64-0x00000000003E0000-0x0000000000407000-memory.dmp
    Filesize

    156KB

  • memory/1776-62-0x0000000075C31000-0x0000000075C33000-memory.dmp
    Filesize

    8KB

  • memory/1776-60-0x0000000000D30000-0x0000000000D31000-memory.dmp
    Filesize

    4KB