Analysis

  • max time kernel
    139s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231130-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231130-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13/12/2023, 23:18

General

  • Target

    45dd7bdcb82d8dd467a26f1e50f74c8421a5d19dd949c78b4484c5f954fa4734.exe

  • Size

    1.6MB

  • MD5

    1176a31766b5de387414af0a494b0a8b

  • SHA1

    b2385e9c44ff8f49bd705e77cfb290f7a074154c

  • SHA256

    45dd7bdcb82d8dd467a26f1e50f74c8421a5d19dd949c78b4484c5f954fa4734

  • SHA512

    cf2268a909edce26b54dd755ed8171675cd818554e888daedab61af21b7fa5ac822dfba0e025919e02b2434483703b9ecb01402aaeac9cc7e7ec5a8f22622881

  • SSDEEP

    49152:80ceOGgUYYEmluRKYoFh4kGWusbQnIyDi1E1uonTKi/OjCCNG:1XOGgUYC4RKXFhrusbaDkE1u

Malware Config

Signatures

  • Drops startup file 1 IoCs
  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Looks up external IP address via web service 2 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Drops file in System32 directory 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Creates scheduled task(s) 1 TTPs 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\45dd7bdcb82d8dd467a26f1e50f74c8421a5d19dd949c78b4484c5f954fa4734.exe
    "C:\Users\Admin\AppData\Local\Temp\45dd7bdcb82d8dd467a26f1e50f74c8421a5d19dd949c78b4484c5f954fa4734.exe"
    1⤵
    • Drops startup file
    • Accesses Microsoft Outlook profiles
    • Adds Run key to start application
    • Drops file in System32 directory
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    • outlook_office_path
    • outlook_win_path
    PID:4480
    • C:\Windows\SysWOW64\schtasks.exe
      schtasks /create /f /RU "Admin" /tr "C:\ProgramData\OfficeTrackerNMP131\OfficeTrackerNMP131.exe" /tn "OfficeTrackerNMP131 HR" /sc HOURLY /rl HIGHEST
      2⤵
      • Creates scheduled task(s)
      PID:1804
    • C:\Windows\SysWOW64\schtasks.exe
      schtasks /create /f /RU "Admin" /tr "C:\ProgramData\OfficeTrackerNMP131\OfficeTrackerNMP131.exe" /tn "OfficeTrackerNMP131 LG" /sc ONLOGON /rl HIGHEST
      2⤵
      • Creates scheduled task(s)
      PID:1432
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4480 -s 1668
      2⤵
      • Program crash
      PID:2260
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum
    1⤵
      PID:1932
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s fhsvc
      1⤵
        PID:2540
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4480 -ip 4480
        1⤵
          PID:5088

        Network

              MITRE ATT&CK Enterprise v15

              Replay Monitor

              Loading Replay Monitor...

              Downloads

              • C:\ProgramData\OfficeTrackerNMP131\OfficeTrackerNMP131.exe

                Filesize

                260KB

                MD5

                9bf325b33d2d6d0e103261082dca8444

                SHA1

                e095f470ea37c97fb40f0b7e06437d6644a6afb1

                SHA256

                001d35b740ed73481ec16c7996e36e6ce0eccda183ff98dd19e901025d85044a

                SHA512

                95c80766a2db3cdabec5b682182109c8f93abee2135f28e6dfdabf1dfb6eb92c62de2fa8f36c59da66c677f28638eb8e2f1509c271154b639dcde6b8a9c42b30

              • C:\Users\Admin\AppData\Local\Temp\grandUIA4iXe_D5IF8Jxv\information.txt

                Filesize

                3KB

                MD5

                7a0f93dcb55cad1faeed055ee05a8750

                SHA1

                119acc73699cc076329cde640d6ce58ebdabd19c

                SHA256

                358f0b6b73e71202f36a9ad166566dbec2f036166a5392187c7a5f723befdb1d

                SHA512

                8ff081c81f8262810f8ce1fcfc04287f8c6684ab82c13c7e38edfef9f34a73d6d6273289c2bb7ee61f8930e1f067713c1403e6f86751bdb31f001834f8fd6f4d

              • C:\Users\Admin\AppData\Local\Temp\posterBox4iXe_D5IF8Jxv\QdX9ITDLyCRBWeb Data

                Filesize

                92KB

                MD5

                506305b81ca2e2c270c8cc550edee2df

                SHA1

                370f5306fde08801c87244eac61f9716c863e8f5

                SHA256

                d14e92ff6924f3a4b2b97a83d3016d84377c0cf34c3e59a87d77cbd7ccbe12f6

                SHA512

                a63b5a7c3f89f642978f27017c3428500e43da3f9f94447b3779c90f4b7844b10727a3795a446de8641e3753925df209eb9cab016f2d941e5863e2c8be0903e8

              • C:\Users\Admin\AppData\Local\Temp\posterBox4iXe_D5IF8Jxv\ZunTSaNJLBVfWeb Data

                Filesize

                116KB

                MD5

                f70aa3fa04f0536280f872ad17973c3d

                SHA1

                50a7b889329a92de1b272d0ecf5fce87395d3123

                SHA256

                8d782aa65de6db3538a14da82216e96d5e0a3c60496726e3541a8165bccc65f8

                SHA512

                30675c5c610d9aa32a4c4a4d9c3af7570823cd197f8d2a709222c78e2cd15304bbed80e233e3674ec2f6e33d1961c67fd6a46dc8ba8b1a301cd0722932c03c84