Overview

overview

10

Static

static

Factura Se...df.exe

windows7_x64

10

Factura Se...df.exe

windows10_x64

10

Analysis

  • max time kernel
    149s
  • max time network
    142s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    26-04-2021 05:59

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General

  • Target

    Factura Serfinanza_0988591359_871136_7591212483295942_9416349_83986212193236775_0965000963599604_pdf.exe

  • Size

    181KB

  • MD5

    357f02cbb2bd479ff6150fd692ce37e8

  • SHA1

    b90a32b5e542b27f20413fff6ad627f2418dbbf5

  • SHA256

    b96287218d12e12274b2c11099833981affae08eb71c6a37f7155456e87866a0

  • SHA512

    40bed9e43c70b4b09e7eb6ffa63629ddc4148398f0851bb286ae02bc6f46586031d69f45be241d97e92cf747b0125e76fc9eadf65ed855703dd4a3f9740428d6

Score
10/10
remcospersistencerat

Malware Config

Extracted

Family

remcos

C2

databasepropersonombrecomercialideasearchwords.services:3521

Signatures

  • Remcos

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

    ratremcos
  • Executes dropped EXE 3 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
    persistence
  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 32 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Factura Serfinanza_0988591359_871136_7591212483295942_9416349_83986212193236775_0965000963599604_pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\Factura Serfinanza_0988591359_871136_7591212483295942_9416349_83986212193236775_0965000963599604_pdf.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4024
    • C:\Users\Admin\AppData\Local\Temp\Factura Serfinanza_0988591359_871136_7591212483295942_9416349_83986212193236775_0965000963599604_pdf.exe
      "C:\Users\Admin\AppData\Local\Temp\Factura Serfinanza_0988591359_871136_7591212483295942_9416349_83986212193236775_0965000963599604_pdf.exe"
      2⤵
      • Adds Run key to start application
      • Modifies registry class
      • Suspicious use of WriteProcessMemory
      PID:3628
      • C:\Windows\SysWOW64\WScript.exe
        "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:3640
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /c "C:\Users\Admin\AppData\Roaming\System32\PxxoServicesTrialNet1.exe"
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:3376
          • 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 behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:1304
            • C:\Users\Admin\AppData\Roaming\System32\PxxoServicesTrialNet1.exe
              "C:\Users\Admin\AppData\Roaming\System32\PxxoServicesTrialNet1.exe"
              6⤵
              • Executes dropped EXE
              PID:3636
            • 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:2716

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1
T1060

Privilege Escalation

Defense Evasion

Modify Registry

1
T1112

Credential Access

Discovery

System Information Discovery

1
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

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

    a39af763b1c09ead3c98a6a615f377fe

    SHA1

    9bd3d39c89e47fe7072270ecc80b810103235c03

    SHA256

    a3930d7535eb768523ee52bbe69f13f857a0ae0f982d7bfc354d802f21010f8f

    SHA512

    3ed8e33ac95fd2536286b4afb2ed2a082bb5f98843478262b32263a14a5dbe0425de7b8d9662a5e482b207ebf8484ace8009ecd1881a6f6f8b0ccf3b0fdfe5da

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

    357f02cbb2bd479ff6150fd692ce37e8

    SHA1

    b90a32b5e542b27f20413fff6ad627f2418dbbf5

    SHA256

    b96287218d12e12274b2c11099833981affae08eb71c6a37f7155456e87866a0

    SHA512

    40bed9e43c70b4b09e7eb6ffa63629ddc4148398f0851bb286ae02bc6f46586031d69f45be241d97e92cf747b0125e76fc9eadf65ed855703dd4a3f9740428d6

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

    357f02cbb2bd479ff6150fd692ce37e8

    SHA1

    b90a32b5e542b27f20413fff6ad627f2418dbbf5

    SHA256

    b96287218d12e12274b2c11099833981affae08eb71c6a37f7155456e87866a0

    SHA512

    40bed9e43c70b4b09e7eb6ffa63629ddc4148398f0851bb286ae02bc6f46586031d69f45be241d97e92cf747b0125e76fc9eadf65ed855703dd4a3f9740428d6

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

    357f02cbb2bd479ff6150fd692ce37e8

    SHA1

    b90a32b5e542b27f20413fff6ad627f2418dbbf5

    SHA256

    b96287218d12e12274b2c11099833981affae08eb71c6a37f7155456e87866a0

    SHA512

    40bed9e43c70b4b09e7eb6ffa63629ddc4148398f0851bb286ae02bc6f46586031d69f45be241d97e92cf747b0125e76fc9eadf65ed855703dd4a3f9740428d6

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

    357f02cbb2bd479ff6150fd692ce37e8

    SHA1

    b90a32b5e542b27f20413fff6ad627f2418dbbf5

    SHA256

    b96287218d12e12274b2c11099833981affae08eb71c6a37f7155456e87866a0

    SHA512

    40bed9e43c70b4b09e7eb6ffa63629ddc4148398f0851bb286ae02bc6f46586031d69f45be241d97e92cf747b0125e76fc9eadf65ed855703dd4a3f9740428d6

    Download Submit
  • C:\Users\Admin\B4fb7cCzWxq7qlNcj1G5f0
    MD5

    5594fa7fe5ed47984afb94c097051514

    SHA1

    0b41633c066c2e37e2ba65f57082de87273e95c9

    SHA256

    7ddc8e010aa3529acee627677855d8cee7b09edd9644272eca6fc807da898d41

    SHA512

    9c437f2385fbe72a99cfcc35b7d632edf4d753624837d8aeaa202c2e1c94833d07d4a7c99bb395c5cf0b1e71339a849216885204f49a32664c1212a38446e73f

    Download Submit
  • memory/1304-135-0x0000000004F00000-0x00000000053FE000-memory.dmp
    Filesize

    5.0MB

    Download
  • memory/1304-126-0x0000000000000000-mapping.dmp
    Download
  • memory/2716-140-0x0000000000400000-0x0000000000422000-memory.dmp
    Filesize

    136KB

    Download
  • memory/2716-138-0x0000000000413FA4-mapping.dmp
    Download
  • memory/3376-125-0x0000000000000000-mapping.dmp
    Download
  • memory/3628-122-0x0000000000400000-0x0000000000422000-memory.dmp
    Filesize

    136KB

    Download
  • memory/3628-121-0x0000000000413FA4-mapping.dmp
    Download
  • memory/3628-120-0x0000000000400000-0x0000000000422000-memory.dmp
    Filesize

    136KB

    Download
  • memory/3640-123-0x0000000000000000-mapping.dmp
    Download
  • memory/4024-114-0x0000000000900000-0x0000000000901000-memory.dmp
    Filesize

    4KB

    Download
  • memory/4024-119-0x0000000004C40000-0x0000000004C67000-memory.dmp
    Filesize

    156KB

    Download
  • memory/4024-118-0x0000000005120000-0x000000000561E000-memory.dmp
    Filesize

    5.0MB

    Download
  • memory/4024-117-0x00000000051C0000-0x00000000051C1000-memory.dmp
    Filesize

    4KB

    Download
  • memory/4024-116-0x0000000005620000-0x0000000005621000-memory.dmp
    Filesize

    4KB

    Download