Analysis

  • max time kernel
    119s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20240215-en
  • resource tags

    arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
  • submitted
    26-03-2024 18:41

General

  • Target

    New Order 3118.rtf

  • Size

    3KB

  • MD5

    99a565b1df705062e82bd4d7587c2959

  • SHA1

    1817b3ef54cf96f71bbb581ef21c37c820c125f0

  • SHA256

    e8fac55896700a6e6505cc1b8d4f98570358c0a1275564d587845cfb5ec47068

  • SHA512

    6893bb6540e7c92cb2d39dae83dd7e16a5ed0cc8bc468e13d65dc1a4e5b909bc9a249b306323167a986ee199b6ff6a9d444b673028e4b92aeb9b0b62607ed15c

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 4 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 6 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
  • Drops file in Windows directory 1 IoCs
  • Office loads VBA resources, possible macro or embedded object present
  • 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 33 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 19 IoCs

Processes

  • C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE
    "C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\New Order 3118.rtf"
    1⤵
    • Drops file in Windows directory
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    PID:1844
  • 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:2444
    • C:\Users\Admin\AppData\Roaming\word.exe
      C:\Users\Admin\AppData\Roaming\word.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2488
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\regsvcs.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\regsvcs.exe"
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:2328
      • C:\Windows\system32\WerFault.exe
        C:\Windows\system32\WerFault.exe -u -p 2488 -s 736
        3⤵
        • Loads dropped DLL
        PID:1984

Network

MITRE ATT&CK Matrix ATT&CK v13

Execution

Exploitation for Client Execution

1
T1203

Defense Evasion

Modify Registry

1
T1112

Replay Monitor

Loading Replay Monitor...

Downloads

  • \Users\Admin\AppData\Roaming\word.exe
    Filesize

    703KB

    MD5

    65a47399be896d919d389ef7ff10d2d3

    SHA1

    2b7b23c447ac4a0d5cf8ee7854c4de4d7d9fbff5

    SHA256

    362817c5d64cbceace5cb56167e75587b9c81b39f34a8bb86d842fa87cdbacf1

    SHA512

    18a4b3a3236f5d7f69bcea6c13605fab1e4d9879a6b9f13b684203087f030c69904284f5eff031cd7864a449fe65d7355659e88eaa978c44bdf3e65655a4ff97

  • \Users\Admin\AppData\Roaming\word.exe
    Filesize

    270KB

    MD5

    c517141c53fef87b783709b53b5af6e1

    SHA1

    0d5d72e962d228880d76dc73a14b3a51afe32c94

    SHA256

    1a669065aa1a654d75c0f67e500ddedf583416822f320b2e990cd42068d82d48

    SHA512

    e1a3e24dcd7d25a69ecb789879f1f68e3edb6c325f814ff0c8ecb8840b367a48de054a7111d97d6b02a8f31c15819f1ea482f76b49cb2ebb9309587838b262db

  • \Users\Admin\AppData\Roaming\word.exe
    Filesize

    265KB

    MD5

    0e2520f305ca358f391094b000c48f94

    SHA1

    cf881c59b586daaa36358572491d973c442478e9

    SHA256

    6f0920ee060770e906cb8d60dc9a9885339f71ceb3b8a0cdc88a8fb74a015afb

    SHA512

    d2441f2e50b8bdcbf7c5bea62ad3a71bf02844ced76dba87942672cbe4ab4d3dcde7cdc8f30ae3c863ad1934543f7b35fadb20fd7b5ea84120b6ffd9d3072be2

  • \Users\Admin\AppData\Roaming\word.exe
    Filesize

    210KB

    MD5

    8a2a1d5ec1ef76d8308155e55fd6d912

    SHA1

    24e4d4b1fd2d0e8c2ee3db8e5196f62325585723

    SHA256

    22070d72b253d60ceaea07706b887705e14998005063f8c3392a9125ab8affc4

    SHA512

    1f89da2861a950601ad7f37c038cfe8ed4ce7e524ad4f232be43218f5d0d9af27340a7e66199111df38465db6e436be41f638e7da2a0936551c0dc4d368bfb76

  • \Users\Admin\AppData\Roaming\word.exe
    Filesize

    258KB

    MD5

    d0ff90703574364c5c8df29cee862b19

    SHA1

    2e0bcaf78e39cec8f5611cd13d8d8ca441723581

    SHA256

    bb0bab7b2d4962334deeb16aad86b94388a0e320da843a81a0a528b1958872d0

    SHA512

    7c7f6758be6776ad8cabc0d28fa135f2470ece4f47aebb908fe201129813ddeca478878d079ee296e618abd8b02663cc0b552345f47c02af5186706015d2ae7a

  • \Users\Admin\AppData\Roaming\word.exe
    Filesize

    269KB

    MD5

    5655af8ef5eeb7c051262e31c2dee9b6

    SHA1

    880a54f66939a3ee86848303cb69b4083ac66f9e

    SHA256

    365f62a80445b361f1841645a03944e0218361dbc018b11039e159a35ba510ea

    SHA512

    75be148f7ede696b68c8d7d5ad4af90b9e71ca4b3e890be06f1f1e473a2fc046725321e31490e5d5d50cb2d243be47664d06be3e46df526519c7327416dc0a7d

  • memory/1844-0-0x000000002FB91000-0x000000002FB92000-memory.dmp
    Filesize

    4KB

  • memory/1844-1-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1844-2-0x00000000713ED000-0x00000000713F8000-memory.dmp
    Filesize

    44KB

  • memory/1844-56-0x00000000713ED000-0x00000000713F8000-memory.dmp
    Filesize

    44KB

  • memory/2328-44-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
    Filesize

    4KB

  • memory/2328-55-0x000000006ADB0000-0x000000006B49E000-memory.dmp
    Filesize

    6.9MB

  • memory/2328-40-0x0000000000400000-0x0000000000440000-memory.dmp
    Filesize

    256KB

  • memory/2328-38-0x0000000000400000-0x0000000000440000-memory.dmp
    Filesize

    256KB

  • memory/2328-47-0x0000000000400000-0x0000000000440000-memory.dmp
    Filesize

    256KB

  • memory/2328-49-0x0000000000400000-0x0000000000440000-memory.dmp
    Filesize

    256KB

  • memory/2328-42-0x0000000000400000-0x0000000000440000-memory.dmp
    Filesize

    256KB

  • memory/2328-43-0x0000000000400000-0x0000000000440000-memory.dmp
    Filesize

    256KB

  • memory/2328-60-0x0000000004B50000-0x0000000004B90000-memory.dmp
    Filesize

    256KB

  • memory/2328-45-0x0000000000400000-0x0000000000440000-memory.dmp
    Filesize

    256KB

  • memory/2328-59-0x000000006ADB0000-0x000000006B49E000-memory.dmp
    Filesize

    6.9MB

  • memory/2488-31-0x000000001ACE0000-0x000000001AD60000-memory.dmp
    Filesize

    512KB

  • memory/2488-29-0x0000000001060000-0x0000000001080000-memory.dmp
    Filesize

    128KB

  • memory/2488-57-0x000007FEF5B10000-0x000007FEF64FC000-memory.dmp
    Filesize

    9.9MB

  • memory/2488-58-0x000000001ACE0000-0x000000001AD60000-memory.dmp
    Filesize

    512KB

  • memory/2488-30-0x000007FEF5B10000-0x000007FEF64FC000-memory.dmp
    Filesize

    9.9MB

  • memory/2488-37-0x0000000000D30000-0x0000000000DC6000-memory.dmp
    Filesize

    600KB