Analysis

  • max time kernel
    149s
  • max time network
    140s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    12-02-2024 16:42

General

  • Target

    documents 53 ACH 775-53 ABM 912.exe

  • Size

    1.1MB

  • MD5

    dbac614bdf786dd5741aaab9ea8006d7

  • SHA1

    4f49b045fe3b043d5f8541939ef66d611094b10d

  • SHA256

    36bd481c4fa0c81766a46d47dc47bd538c2bbf91254092fe6f5cbea1d3bcb4d2

  • SHA512

    966a2038cb16dead59f3b44379d8fb2bb35f5888b10c74cafb8a28b8e9a029b0a5ec0d3c7d17a5915351014c7307e3989efb17120781dccbf7815a00d5789526

  • SSDEEP

    24576:KS5HuM8IqoMzMxDHEHsGhXwy54j3BjqgMQUWhypBR:f55XOHsG/54j3ZftUNBR

Malware Config

Signatures

  • Guloader,Cloudeye

    A shellcode based downloader first seen in 2020.

  • Loads dropped DLL 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
  • Drops file in System32 directory 2 IoCs
  • Suspicious use of NtCreateThreadExHideFromDebugger 2 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Program Files directory 1 IoCs
  • Drops file in Windows directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\documents 53 ACH 775-53 ABM 912.exe
    "C:\Users\Admin\AppData\Local\Temp\documents 53 ACH 775-53 ABM 912.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in System32 directory
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:2468
    • C:\Program Files (x86)\windows mail\wab.exe
      "C:\Users\Admin\AppData\Local\Temp\documents 53 ACH 775-53 ABM 912.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious use of NtCreateThreadExHideFromDebugger
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious use of SetWindowsHookEx
      PID:452

Network

MITRE ATT&CK Matrix ATT&CK v13

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Defense Evasion

Modify Registry

1
T1112

Discovery

System Information Discovery

1
T1082

Command and Control

Web Service

1
T1102

Replay Monitor

Loading Replay Monitor...

Downloads

  • \Users\Admin\AppData\Local\Temp\nsy2943.tmp\System.dll
    Filesize

    11KB

    MD5

    17ed1c86bd67e78ade4712be48a7d2bd

    SHA1

    1cc9fe86d6d6030b4dae45ecddce5907991c01a0

    SHA256

    bd046e6497b304e4ea4ab102cab2b1f94ce09bde0eebba4c59942a732679e4eb

    SHA512

    0cbed521e7d6d1f85977b3f7d3ca7ac34e1b5495b69fd8c7bfa1a846baf53b0ecd06fe1ad02a3599082ffacaf8c71a3bb4e32dec05f8e24859d736b828092cd5

  • memory/452-76-0x0000000000AF0000-0x0000000001B52000-memory.dmp
    Filesize

    16.4MB

  • memory/452-58-0x0000000000AF0000-0x0000000001B52000-memory.dmp
    Filesize

    16.4MB

  • memory/452-27-0x00000000775F6000-0x00000000775F7000-memory.dmp
    Filesize

    4KB

  • memory/452-28-0x00000000775C0000-0x0000000077696000-memory.dmp
    Filesize

    856KB

  • memory/452-30-0x0000000000AF0000-0x0000000001B52000-memory.dmp
    Filesize

    16.4MB

  • memory/452-110-0x0000000000AF0000-0x0000000001B52000-memory.dmp
    Filesize

    16.4MB

  • memory/452-109-0x0000000000AF0000-0x0000000001B52000-memory.dmp
    Filesize

    16.4MB

  • memory/452-52-0x0000000001B60000-0x00000000027EF000-memory.dmp
    Filesize

    12.6MB

  • memory/452-53-0x0000000001B60000-0x00000000027EF000-memory.dmp
    Filesize

    12.6MB

  • memory/452-54-0x00000000775C0000-0x0000000077696000-memory.dmp
    Filesize

    856KB

  • memory/452-55-0x0000000000AF0000-0x0000000001B52000-memory.dmp
    Filesize

    16.4MB

  • memory/452-56-0x0000000000AF0000-0x0000000001B52000-memory.dmp
    Filesize

    16.4MB

  • memory/452-57-0x0000000000AF0000-0x0000000001B52000-memory.dmp
    Filesize

    16.4MB

  • memory/452-78-0x0000000000AF0000-0x0000000001B52000-memory.dmp
    Filesize

    16.4MB

  • memory/452-59-0x0000000000AF0000-0x0000000001B52000-memory.dmp
    Filesize

    16.4MB

  • memory/452-60-0x0000000000AF0000-0x0000000001B52000-memory.dmp
    Filesize

    16.4MB

  • memory/452-61-0x0000000000AF0000-0x0000000001B52000-memory.dmp
    Filesize

    16.4MB

  • memory/452-62-0x0000000000AF0000-0x0000000001B52000-memory.dmp
    Filesize

    16.4MB

  • memory/452-63-0x0000000000AF0000-0x0000000001B52000-memory.dmp
    Filesize

    16.4MB

  • memory/452-64-0x0000000000AF0000-0x0000000001B52000-memory.dmp
    Filesize

    16.4MB

  • memory/452-65-0x0000000000AF0000-0x0000000001B52000-memory.dmp
    Filesize

    16.4MB

  • memory/452-66-0x0000000000AF0000-0x0000000001B52000-memory.dmp
    Filesize

    16.4MB

  • memory/452-67-0x0000000000AF0000-0x0000000001B52000-memory.dmp
    Filesize

    16.4MB

  • memory/452-68-0x0000000000AF0000-0x0000000001B52000-memory.dmp
    Filesize

    16.4MB

  • memory/452-69-0x0000000000AF0000-0x0000000001B52000-memory.dmp
    Filesize

    16.4MB

  • memory/452-70-0x0000000000AF0000-0x0000000001B52000-memory.dmp
    Filesize

    16.4MB

  • memory/452-71-0x0000000000AF0000-0x0000000001B52000-memory.dmp
    Filesize

    16.4MB

  • memory/452-72-0x0000000000AF0000-0x0000000001B52000-memory.dmp
    Filesize

    16.4MB

  • memory/452-73-0x0000000000AF0000-0x0000000001B52000-memory.dmp
    Filesize

    16.4MB

  • memory/452-74-0x0000000000AF0000-0x0000000001B52000-memory.dmp
    Filesize

    16.4MB

  • memory/452-79-0x0000000000AF0000-0x0000000001B52000-memory.dmp
    Filesize

    16.4MB

  • memory/452-24-0x0000000001B60000-0x00000000027EF000-memory.dmp
    Filesize

    12.6MB

  • memory/452-82-0x0000000000AF0000-0x0000000001B52000-memory.dmp
    Filesize

    16.4MB

  • memory/452-25-0x00000000773D0000-0x0000000077579000-memory.dmp
    Filesize

    1.7MB

  • memory/452-75-0x0000000000AF0000-0x0000000001B52000-memory.dmp
    Filesize

    16.4MB

  • memory/452-80-0x0000000000AF0000-0x0000000001B52000-memory.dmp
    Filesize

    16.4MB

  • memory/452-81-0x0000000000AF0000-0x0000000001B52000-memory.dmp
    Filesize

    16.4MB

  • memory/452-77-0x0000000000AF0000-0x0000000001B52000-memory.dmp
    Filesize

    16.4MB

  • memory/452-83-0x0000000000AF0000-0x0000000001B52000-memory.dmp
    Filesize

    16.4MB

  • memory/452-84-0x0000000000AF0000-0x0000000001B52000-memory.dmp
    Filesize

    16.4MB

  • memory/452-85-0x0000000000AF0000-0x0000000001B52000-memory.dmp
    Filesize

    16.4MB

  • memory/452-86-0x0000000000AF0000-0x0000000001B52000-memory.dmp
    Filesize

    16.4MB

  • memory/452-87-0x0000000000AF0000-0x0000000001B52000-memory.dmp
    Filesize

    16.4MB

  • memory/452-88-0x0000000000AF0000-0x0000000001B52000-memory.dmp
    Filesize

    16.4MB

  • memory/452-89-0x0000000000AF0000-0x0000000001B52000-memory.dmp
    Filesize

    16.4MB

  • memory/452-90-0x0000000000AF0000-0x0000000001B52000-memory.dmp
    Filesize

    16.4MB

  • memory/452-91-0x0000000000AF0000-0x0000000001B52000-memory.dmp
    Filesize

    16.4MB

  • memory/452-92-0x0000000000AF0000-0x0000000001B52000-memory.dmp
    Filesize

    16.4MB

  • memory/452-93-0x0000000000AF0000-0x0000000001B52000-memory.dmp
    Filesize

    16.4MB

  • memory/452-94-0x0000000000AF0000-0x0000000001B52000-memory.dmp
    Filesize

    16.4MB

  • memory/452-95-0x0000000000AF0000-0x0000000001B52000-memory.dmp
    Filesize

    16.4MB

  • memory/452-96-0x0000000000AF0000-0x0000000001B52000-memory.dmp
    Filesize

    16.4MB

  • memory/452-98-0x0000000000AF0000-0x0000000001B52000-memory.dmp
    Filesize

    16.4MB

  • memory/452-99-0x0000000000AF0000-0x0000000001B52000-memory.dmp
    Filesize

    16.4MB

  • memory/452-100-0x0000000000AF0000-0x0000000001B52000-memory.dmp
    Filesize

    16.4MB

  • memory/452-101-0x0000000000AF0000-0x0000000001B52000-memory.dmp
    Filesize

    16.4MB

  • memory/452-102-0x0000000000AF0000-0x0000000001B52000-memory.dmp
    Filesize

    16.4MB

  • memory/452-103-0x0000000000AF0000-0x0000000001B52000-memory.dmp
    Filesize

    16.4MB

  • memory/452-106-0x0000000000AF0000-0x0000000001B52000-memory.dmp
    Filesize

    16.4MB

  • memory/452-107-0x0000000000AF0000-0x0000000001B52000-memory.dmp
    Filesize

    16.4MB

  • memory/452-108-0x0000000000AF0000-0x0000000001B52000-memory.dmp
    Filesize

    16.4MB

  • memory/2468-21-0x00000000773D0000-0x0000000077579000-memory.dmp
    Filesize

    1.7MB

  • memory/2468-20-0x0000000004090000-0x0000000004D1F000-memory.dmp
    Filesize

    12.6MB

  • memory/2468-22-0x00000000775C0000-0x0000000077696000-memory.dmp
    Filesize

    856KB

  • memory/2468-23-0x0000000010000000-0x0000000010006000-memory.dmp
    Filesize

    24KB

  • memory/2468-26-0x0000000004090000-0x0000000004D1F000-memory.dmp
    Filesize

    12.6MB