Analysis

  • max time kernel
    124s
  • max time network
    145s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07-11-2024 14:58

General

  • Target

    Order - PO0005376876624_NATHERL GROUP UK.pdf(79KB).exe

  • Size

    3.7MB

  • MD5

    10543f9aaa9c0bf4085301bc7614ac20

  • SHA1

    1561a634d02baaa557032b40f95b191deedb67d0

  • SHA256

    4b35788594f482786143f276de0942d2f73c416c8e0b1d104e848187cb604749

  • SHA512

    320dae470f3b5ad983b55fbaeb437daed163cea4a5166dd7c606012d9f21cb516b15d91e171469a594cf2522a71b0af367fe0b3c94cd9e2432570858280ec55e

  • SSDEEP

    98304:FOH+wWNUsUX/WWxvy0GzbNPFZACmedrm:cewYUXX/TxvSzj5/

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    mail.privateemail.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    @#Qwerty12345

Extracted

Family

quasar

Version

1.4.1

Botnet

CODE

C2

twart.myfirewall.org:9792

rency.ydns.eu:5287

wqo9.firewall-gateway.de:8841

Mutex

02351e291-5d041-4fa37-932c7-869aeiQec514992

Attributes
  • encryption_key

    3145298725BA5E0DD56E87FFE3F8898EA81E6EDA

  • install_name

    workbook.exe

  • log_directory

    Logs

  • reconnect_delay

    6000

  • startup_key

    workbook

  • subdirectory

    SubDir

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

    Agent Tesla is a remote access tool (RAT) written in visual basic.

  • Agenttesla family
  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar family
  • Quasar payload 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 11 IoCs
  • Reads WinSCP keys stored on the system 2 TTPs

    Tries to access WinSCP stored sessions.

  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • 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 3 TTPs

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

  • Looks up external IP address via web service 4 IoCs

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

  • Suspicious use of SetThreadContext 5 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 12 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 12 IoCs
  • Suspicious use of AdjustPrivilegeToken 7 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Order - PO0005376876624_NATHERL GROUP UK.pdf(79KB).exe
    "C:\Users\Admin\AppData\Local\Temp\Order - PO0005376876624_NATHERL GROUP UK.pdf(79KB).exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4496
    • C:\Users\Admin\AppData\Local\Temp\Order - PO0005376876624_NATHERL GROUP UK.pdf(79KB).exe
      "C:\Users\Admin\AppData\Local\Temp\Order - PO0005376876624_NATHERL GROUP UK.pdf(79KB).exe"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:316
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks" /create /tn "workbook" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\workbook.exe" /rl HIGHEST /f
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:4808
      • C:\Users\Admin\AppData\Roaming\SubDir\workbook.exe
        "C:\Users\Admin\AppData\Roaming\SubDir\workbook.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:1844
        • C:\Users\Admin\AppData\Roaming\SubDir\workbook.exe
          "C:\Users\Admin\AppData\Roaming\SubDir\workbook.exe"
          4⤵
          • Checks computer location settings
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:1064
          • C:\Windows\SysWOW64\schtasks.exe
            "schtasks" /create /tn "workbook" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\workbook.exe" /rl HIGHEST /f
            5⤵
            • System Location Discovery: System Language Discovery
            • Scheduled Task/Job: Scheduled Task
            PID:4312
          • C:\Users\Admin\AppData\Local\Temp\rC35H5zPIxjh.exe
            "C:\Users\Admin\AppData\Local\Temp\rC35H5zPIxjh.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:216
            • C:\Users\Admin\AppData\Local\Temp\rC35H5zPIxjh.exe
              "C:\Users\Admin\AppData\Local\Temp\rC35H5zPIxjh.exe"
              6⤵
              • Executes dropped EXE
              PID:4840
            • C:\Users\Admin\AppData\Local\Temp\rC35H5zPIxjh.exe
              "C:\Users\Admin\AppData\Local\Temp\rC35H5zPIxjh.exe"
              6⤵
              • Executes dropped EXE
              PID:1600
            • C:\Users\Admin\AppData\Local\Temp\rC35H5zPIxjh.exe
              "C:\Users\Admin\AppData\Local\Temp\rC35H5zPIxjh.exe"
              6⤵
              • Executes dropped EXE
              • System Location Discovery: System Language Discovery
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              PID:2480
          • C:\Users\Admin\AppData\Local\Temp\btzpihN1XhWv.exe
            "C:\Users\Admin\AppData\Local\Temp\btzpihN1XhWv.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • System Location Discovery: System Language Discovery
            • Suspicious use of WriteProcessMemory
            PID:3444
            • C:\Users\Admin\AppData\Local\Temp\btzpihN1XhWv.exe
              "C:\Users\Admin\AppData\Local\Temp\btzpihN1XhWv.exe"
              6⤵
              • Executes dropped EXE
              • System Location Discovery: System Language Discovery
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              PID:4856
          • C:\Users\Admin\AppData\Local\Temp\ZPiFTyEGfvLK.exe
            "C:\Users\Admin\AppData\Local\Temp\ZPiFTyEGfvLK.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:1828
            • C:\Users\Admin\AppData\Local\Temp\ZPiFTyEGfvLK.exe
              "C:\Users\Admin\AppData\Local\Temp\ZPiFTyEGfvLK.exe"
              6⤵
              • Executes dropped EXE
              PID:4580
            • C:\Users\Admin\AppData\Local\Temp\ZPiFTyEGfvLK.exe
              "C:\Users\Admin\AppData\Local\Temp\ZPiFTyEGfvLK.exe"
              6⤵
              • Executes dropped EXE
              • System Location Discovery: System Language Discovery
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              PID:4736

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Order - PO0005376876624_NATHERL GROUP UK.pdf(79KB).exe.log

    Filesize

    1KB

    MD5

    8ec831f3e3a3f77e4a7b9cd32b48384c

    SHA1

    d83f09fd87c5bd86e045873c231c14836e76a05c

    SHA256

    7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982

    SHA512

    26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

  • C:\Users\Admin\AppData\Local\Temp\rC35H5zPIxjh.exe

    Filesize

    794KB

    MD5

    08ca1aa7629a23a8310daf06579da0b1

    SHA1

    2930d676eff99be7adbfccb48b11b41758c66fc2

    SHA256

    f8c395958551b1d8681e6a870b8dbbc9aaf41d6b9636a8d6c8c9328d9fbeeef5

    SHA512

    390132d495042e652196a4e7246e0ada5402726d46527f79edbc74690c15821c11b32cb8037ddf2da911b6e8285e08cb5542ffcfecbc7a6278199bdd64ced857

  • C:\Users\Admin\AppData\Roaming\SubDir\workbook.exe

    Filesize

    3.7MB

    MD5

    10543f9aaa9c0bf4085301bc7614ac20

    SHA1

    1561a634d02baaa557032b40f95b191deedb67d0

    SHA256

    4b35788594f482786143f276de0942d2f73c416c8e0b1d104e848187cb604749

    SHA512

    320dae470f3b5ad983b55fbaeb437daed163cea4a5166dd7c606012d9f21cb516b15d91e171469a594cf2522a71b0af367fe0b3c94cd9e2432570858280ec55e

  • memory/216-72-0x0000000002F70000-0x0000000002FF2000-memory.dmp

    Filesize

    520KB

  • memory/216-49-0x0000000000C00000-0x0000000000CCC000-memory.dmp

    Filesize

    816KB

  • memory/316-11-0x0000000000400000-0x0000000000724000-memory.dmp

    Filesize

    3.1MB

  • memory/316-22-0x0000000074B80000-0x0000000075330000-memory.dmp

    Filesize

    7.7MB

  • memory/316-15-0x0000000074B80000-0x0000000075330000-memory.dmp

    Filesize

    7.7MB

  • memory/316-13-0x0000000074B80000-0x0000000075330000-memory.dmp

    Filesize

    7.7MB

  • memory/1064-32-0x0000000006C70000-0x0000000006D22000-memory.dmp

    Filesize

    712KB

  • memory/1064-30-0x0000000006E60000-0x0000000007478000-memory.dmp

    Filesize

    6.1MB

  • memory/1064-37-0x0000000008250000-0x00000000082B6000-memory.dmp

    Filesize

    408KB

  • memory/1064-36-0x00000000081A0000-0x00000000081DC000-memory.dmp

    Filesize

    240KB

  • memory/1064-35-0x0000000008140000-0x0000000008152000-memory.dmp

    Filesize

    72KB

  • memory/1064-31-0x0000000006A00000-0x0000000006A50000-memory.dmp

    Filesize

    320KB

  • memory/1844-25-0x0000000074B80000-0x0000000075330000-memory.dmp

    Filesize

    7.7MB

  • memory/1844-29-0x0000000074B80000-0x0000000075330000-memory.dmp

    Filesize

    7.7MB

  • memory/1844-23-0x0000000074B80000-0x0000000075330000-memory.dmp

    Filesize

    7.7MB

  • memory/1844-24-0x0000000074B80000-0x0000000075330000-memory.dmp

    Filesize

    7.7MB

  • memory/2480-75-0x0000000000400000-0x0000000000440000-memory.dmp

    Filesize

    256KB

  • memory/4496-0-0x0000000074B8E000-0x0000000074B8F000-memory.dmp

    Filesize

    4KB

  • memory/4496-10-0x000000000E170000-0x000000000E20C000-memory.dmp

    Filesize

    624KB

  • memory/4496-6-0x0000000074B8E000-0x0000000074B8F000-memory.dmp

    Filesize

    4KB

  • memory/4496-7-0x0000000074B80000-0x0000000075330000-memory.dmp

    Filesize

    7.7MB

  • memory/4496-5-0x0000000074B80000-0x0000000075330000-memory.dmp

    Filesize

    7.7MB

  • memory/4496-14-0x0000000074B80000-0x0000000075330000-memory.dmp

    Filesize

    7.7MB

  • memory/4496-8-0x00000000060C0000-0x00000000060DC000-memory.dmp

    Filesize

    112KB

  • memory/4496-9-0x0000000009E70000-0x000000000A1D6000-memory.dmp

    Filesize

    3.4MB

  • memory/4496-3-0x0000000004E40000-0x0000000004ED2000-memory.dmp

    Filesize

    584KB

  • memory/4496-2-0x0000000005510000-0x0000000005AB4000-memory.dmp

    Filesize

    5.6MB

  • memory/4496-1-0x0000000000050000-0x000000000040A000-memory.dmp

    Filesize

    3.7MB

  • memory/4496-4-0x0000000004E10000-0x0000000004E1A000-memory.dmp

    Filesize

    40KB