Analysis

  • max time kernel
    123s
  • max time network
    124s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    15-06-2023 12:41

General

  • Target

    06614499.xls

  • Size

    170KB

  • MD5

    57b9f36b7ff2ff88c419d7b652108392

  • SHA1

    4c1868c6cdabb597ceb82f6230d8f6899ce2d50a

  • SHA256

    7131b82b77924238dc3a86aafb04c522513d4e0dbdf7d0dc2b620d9998a40940

  • SHA512

    89bf880f63e144452bb68a2108b7354f5eefd3edaee9694b84e71123d412aed7945e4134c1dbcf00b4adac391023f814c13ac9be183a6952fa4c135b3c33ac00

  • SSDEEP

    3072:YJkZ+RwPONXoRjDhIcp0fDlaGGx+cL26nAtXN2jlfsSipkwUmbL19Y4qUhh9xdZ+:5Z+RwPONXoRjDhIcp0fDlavx+W26nAtm

Malware Config

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

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

  • Blocklisted process makes network request 1 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • 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 system info in registry 2 TTPs 1 IoCs
  • Launches Equation Editor 1 TTPs 1 IoCs

    Equation Editor is an old Office component often targeted by exploits such as CVE-2017-11882.

  • Modifies Internet Explorer settings 1 TTPs 31 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE
    "C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\06614499.xls
    1⤵
    • Enumerates system info in registry
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    PID:1948
  • C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE
    "C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE" -Embedding
    1⤵
    • Blocklisted process makes network request
    • Loads dropped DLL
    • Launches Equation Editor
    • Suspicious use of WriteProcessMemory
    PID:1428
    • C:\Users\Public\clean_root.exe
      "C:\Users\Public\clean_root.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1560
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
        "{path}"
        3⤵
        • Accesses Microsoft Outlook profiles
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • outlook_office_path
        • outlook_win_path
        PID:1900

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Public\clean_root.exe

    Filesize

    856KB

    MD5

    95ca8fe50466f80a5b0416971a347fe8

    SHA1

    b8dbbfe3315bebf8524dbb8ae8995a2a203f201e

    SHA256

    c9184faec69eeee4a51446b8ed687351ce3e40e724f48f5a3466cbc975e1b743

    SHA512

    de5acf2c5099109fa62262220036cc8b6190884c41518b55f68f5982674d1295d1bbdb433caaec334aa9211f034733ae09211349f4bca39c59b85ef94025b04b

  • C:\Users\Public\clean_root.exe

    Filesize

    856KB

    MD5

    95ca8fe50466f80a5b0416971a347fe8

    SHA1

    b8dbbfe3315bebf8524dbb8ae8995a2a203f201e

    SHA256

    c9184faec69eeee4a51446b8ed687351ce3e40e724f48f5a3466cbc975e1b743

    SHA512

    de5acf2c5099109fa62262220036cc8b6190884c41518b55f68f5982674d1295d1bbdb433caaec334aa9211f034733ae09211349f4bca39c59b85ef94025b04b

  • C:\Users\Public\clean_root.exe

    Filesize

    856KB

    MD5

    95ca8fe50466f80a5b0416971a347fe8

    SHA1

    b8dbbfe3315bebf8524dbb8ae8995a2a203f201e

    SHA256

    c9184faec69eeee4a51446b8ed687351ce3e40e724f48f5a3466cbc975e1b743

    SHA512

    de5acf2c5099109fa62262220036cc8b6190884c41518b55f68f5982674d1295d1bbdb433caaec334aa9211f034733ae09211349f4bca39c59b85ef94025b04b

  • \Users\Public\clean_root.exe

    Filesize

    856KB

    MD5

    95ca8fe50466f80a5b0416971a347fe8

    SHA1

    b8dbbfe3315bebf8524dbb8ae8995a2a203f201e

    SHA256

    c9184faec69eeee4a51446b8ed687351ce3e40e724f48f5a3466cbc975e1b743

    SHA512

    de5acf2c5099109fa62262220036cc8b6190884c41518b55f68f5982674d1295d1bbdb433caaec334aa9211f034733ae09211349f4bca39c59b85ef94025b04b

  • memory/1560-70-0x0000000004BF0000-0x0000000004C70000-memory.dmp

    Filesize

    512KB

  • memory/1560-71-0x00000000007D0000-0x0000000000800000-memory.dmp

    Filesize

    192KB

  • memory/1560-66-0x0000000005160000-0x00000000051A0000-memory.dmp

    Filesize

    256KB

  • memory/1560-67-0x0000000005160000-0x00000000051A0000-memory.dmp

    Filesize

    256KB

  • memory/1560-68-0x0000000000410000-0x0000000000424000-memory.dmp

    Filesize

    80KB

  • memory/1560-65-0x0000000000BC0000-0x0000000000C9C000-memory.dmp

    Filesize

    880KB

  • memory/1900-77-0x0000000000400000-0x0000000000430000-memory.dmp

    Filesize

    192KB

  • memory/1900-72-0x0000000000400000-0x0000000000430000-memory.dmp

    Filesize

    192KB

  • memory/1900-73-0x0000000000400000-0x0000000000430000-memory.dmp

    Filesize

    192KB

  • memory/1900-74-0x0000000000400000-0x0000000000430000-memory.dmp

    Filesize

    192KB

  • memory/1900-75-0x0000000000400000-0x0000000000430000-memory.dmp

    Filesize

    192KB

  • memory/1900-76-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/1900-79-0x0000000000400000-0x0000000000430000-memory.dmp

    Filesize

    192KB

  • memory/1900-81-0x0000000000400000-0x0000000000430000-memory.dmp

    Filesize

    192KB

  • memory/1900-82-0x0000000000450000-0x0000000000490000-memory.dmp

    Filesize

    256KB

  • memory/1900-100-0x0000000000450000-0x0000000000490000-memory.dmp

    Filesize

    256KB

  • memory/1948-54-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/1948-69-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB