Analysis

  • max time kernel
    145s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231127-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231127-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13/12/2023, 21:45

General

  • Target

    1d3b69c3e1b8f4d2cac648bf352c6cf52544708582d7e2f18cfbc807399905be.exe

  • Size

    1.6MB

  • MD5

    bc769a9cb75cfc17e5a55237277e88ec

  • SHA1

    cba6ca1eafacea82086e418751d727266cf292d7

  • SHA256

    1d3b69c3e1b8f4d2cac648bf352c6cf52544708582d7e2f18cfbc807399905be

  • SHA512

    b4e7057be3781ed46dd28c00f5f93f7986aa47fd71beb616d1d365abe8a62c325e55e22dfa7583133742d0278ee68558e0ad4b46d6e28d03ddf0140e9e6f06e3

  • 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\1d3b69c3e1b8f4d2cac648bf352c6cf52544708582d7e2f18cfbc807399905be.exe
    "C:\Users\Admin\AppData\Local\Temp\1d3b69c3e1b8f4d2cac648bf352c6cf52544708582d7e2f18cfbc807399905be.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:2084
    • 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:3476
    • 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:4884
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2084 -s 1672
      2⤵
      • Program crash
      PID:4760
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum
    1⤵
      PID:1616
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s fhsvc
      1⤵
        PID:1220
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 2084 -ip 2084
        1⤵
          PID:5092

        Network

              MITRE ATT&CK Enterprise v15

              Replay Monitor

              Loading Replay Monitor...

              Downloads

              • C:\ProgramData\OfficeTrackerNMP131\OfficeTrackerNMP131.exe

                Filesize

                1.6MB

                MD5

                bc769a9cb75cfc17e5a55237277e88ec

                SHA1

                cba6ca1eafacea82086e418751d727266cf292d7

                SHA256

                1d3b69c3e1b8f4d2cac648bf352c6cf52544708582d7e2f18cfbc807399905be

                SHA512

                b4e7057be3781ed46dd28c00f5f93f7986aa47fd71beb616d1d365abe8a62c325e55e22dfa7583133742d0278ee68558e0ad4b46d6e28d03ddf0140e9e6f06e3

              • C:\Users\Admin\AppData\Local\Temp\grandUIAE0br5cFGOrc_K\information.txt

                Filesize

                3KB

                MD5

                60a5c7d7885d03133983fa1f3fa55e99

                SHA1

                ecffe1312a2ffe789e4d72e9063d2940935c595c

                SHA256

                350b898032644b764269414c7d10d53d4d4e8a16d473586ed29077a08d9f8e30

                SHA512

                52d5f46bbea1da7378ec2483f8babb1530ec827064da9d52d1e350afbe15a8e21357e86f796598e5261d6722aa8d50763b04a31ee91cb61d3a607faa58578e76

              • C:\Users\Admin\AppData\Local\Temp\posterBoxE0br5cFGOrc_K\QdX9ITDLyCRBWeb Data

                Filesize

                92KB

                MD5

                250f6cee6a8be4a85cd0d78b8f9ac854

                SHA1

                48a5be711abe88c0efb7204f6c792e67a99d390a

                SHA256

                21e090219937792f360789c94785cf969cf22fb9e2ae145dec419dc4beab1321

                SHA512

                4685c2cbc34566879e5c494f1433996ce9541e048a87036876d0ec426a02a13af6ed606575306522def4dd19a3fcc34b95335f492b21960b28e8f12be82a35b7

              • C:\Users\Admin\AppData\Local\Temp\posterBoxE0br5cFGOrc_K\ZunTSaNJLBVfWeb Data

                Filesize

                116KB

                MD5

                f70aa3fa04f0536280f872ad17973c3d

                SHA1

                50a7b889329a92de1b272d0ecf5fce87395d3123

                SHA256

                8d782aa65de6db3538a14da82216e96d5e0a3c60496726e3541a8165bccc65f8

                SHA512

                30675c5c610d9aa32a4c4a4d9c3af7570823cd197f8d2a709222c78e2cd15304bbed80e233e3674ec2f6e33d1961c67fd6a46dc8ba8b1a301cd0722932c03c84