Analysis

  • max time kernel
    141s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19-06-2023 14:11

General

  • Target

    DHL RPA GRBP Template.pdf.exe

  • Size

    13KB

  • MD5

    0aa04f249eaece97140ad4ff7bc00420

  • SHA1

    4cb79679a05b197ba21489fc362e0d91ae2c3b06

  • SHA256

    9ed9d37ed2bad5f93fe5f80d396c6a075be44a60312ea033a8d4eb3be772b4f9

  • SHA512

    e5a4e704f9919d55398bfb9fe3f98729084b531d4ffaf5ccf59eef83b190827f8d80c60e0e676d56c36bdff019499483b10851288b2f84f922f18c182b4b5599

  • SSDEEP

    192:k0OejvqLK915glsNhYkCeXicN+gp7cCBR2D9UFay:klLaTglsNvCeXicNrZO9UFa

Malware Config

Extracted

Family

purecrypter

C2

https://onedrive.live.com/download?cid=0D0FBFD7EE8A13AB&resid=D0FBFD7EE8A13AB%21212&authkey=AAMJbAVJ3CQXG7o

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot6261426177:AAGKVvStJVx3AbPod6gVs0gLfIFG75EuCzc/

Signatures

  • AgentTesla

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

  • PureCrypter

    PureCrypter is a .NET malware loader first seen in early 2021.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Looks up external IP address via web service 2 IoCs

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

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

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

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\DHL RPA GRBP Template.pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\DHL RPA GRBP Template.pdf.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4680
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMgAwAA==
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1480
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
      C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • outlook_office_path
      • outlook_win_path
      PID:3296

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_4we1gzbu.0x0.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • memory/1480-153-0x0000000000D30000-0x0000000000D40000-memory.dmp

    Filesize

    64KB

  • memory/1480-161-0x0000000000D30000-0x0000000000D40000-memory.dmp

    Filesize

    64KB

  • memory/1480-155-0x0000000000D30000-0x0000000000D40000-memory.dmp

    Filesize

    64KB

  • memory/1480-156-0x0000000007390000-0x0000000007A0A000-memory.dmp

    Filesize

    6.5MB

  • memory/1480-154-0x0000000005B20000-0x0000000005B3E000-memory.dmp

    Filesize

    120KB

  • memory/1480-139-0x0000000000DC0000-0x0000000000DF6000-memory.dmp

    Filesize

    216KB

  • memory/1480-140-0x0000000000D30000-0x0000000000D40000-memory.dmp

    Filesize

    64KB

  • memory/1480-141-0x0000000004C50000-0x0000000005278000-memory.dmp

    Filesize

    6.2MB

  • memory/1480-142-0x00000000053A0000-0x0000000005406000-memory.dmp

    Filesize

    408KB

  • memory/1480-143-0x00000000054C0000-0x0000000005526000-memory.dmp

    Filesize

    408KB

  • memory/1480-160-0x0000000000D30000-0x0000000000D40000-memory.dmp

    Filesize

    64KB

  • memory/1480-159-0x0000000000D30000-0x0000000000D40000-memory.dmp

    Filesize

    64KB

  • memory/1480-157-0x0000000005FC0000-0x0000000005FDA000-memory.dmp

    Filesize

    104KB

  • memory/3296-169-0x0000000006FF0000-0x0000000007040000-memory.dmp

    Filesize

    320KB

  • memory/3296-177-0x0000000007190000-0x000000000722C000-memory.dmp

    Filesize

    624KB

  • memory/3296-178-0x0000000005860000-0x0000000005870000-memory.dmp

    Filesize

    64KB

  • memory/3296-170-0x00000000072C0000-0x0000000007482000-memory.dmp

    Filesize

    1.8MB

  • memory/3296-166-0x0000000000400000-0x0000000000430000-memory.dmp

    Filesize

    192KB

  • memory/3296-168-0x0000000005860000-0x0000000005870000-memory.dmp

    Filesize

    64KB

  • memory/4680-158-0x0000000004C60000-0x0000000004C70000-memory.dmp

    Filesize

    64KB

  • memory/4680-134-0x0000000005310000-0x00000000058B4000-memory.dmp

    Filesize

    5.6MB

  • memory/4680-136-0x0000000004C90000-0x0000000004C9A000-memory.dmp

    Filesize

    40KB

  • memory/4680-133-0x00000000002D0000-0x00000000002D8000-memory.dmp

    Filesize

    32KB

  • memory/4680-135-0x0000000004CB0000-0x0000000004D42000-memory.dmp

    Filesize

    584KB

  • memory/4680-137-0x0000000004C60000-0x0000000004C70000-memory.dmp

    Filesize

    64KB

  • memory/4680-138-0x0000000008DD0000-0x0000000008DF2000-memory.dmp

    Filesize

    136KB