Analysis

  • max time kernel
    147s
  • max time network
    141s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06-11-2024 13:56

General

  • Target

    669bfc59550b87a86c5e87d33da3e63be15f8712184a6aa176e0021b8c65df1e.exe

  • Size

    1.4MB

  • MD5

    0b67de290afdcb06218d5ab1a6c3c49b

  • SHA1

    372ecac4cd7fe8de0f89aff4755683f8fed81a26

  • SHA256

    669bfc59550b87a86c5e87d33da3e63be15f8712184a6aa176e0021b8c65df1e

  • SHA512

    fc21a1dc1a1a29a5bdfc0d28f8d1a6be9204a26b7946b08d27e97b4e4c31c4be1caaa0bb9e2b199697ea0ec529ef7165c37ee7bb512c6accdae179f86fd66063

  • SSDEEP

    24576:ktdCzxWfKe9UR1FCBmjwGJkAQy4X1N4QNbJP71SIzKgopvgeum5hD4nA:k2xWfKe9E1rEGZQTXXdP78d91Pumv4nA

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    ftp
  • Host:
    ftp://ftp.concaribe.com
  • Port:
    21
  • Username:
    [email protected]
  • Password:
    ro}UWgz#!38E

Signatures

  • AgentTesla

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

  • Agenttesla family
  • Guloader family
  • Guloader,Cloudeye

    A shellcode based downloader first seen in 2020.

  • Loads dropped DLL 1 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 2 IoCs

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

  • Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\669bfc59550b87a86c5e87d33da3e63be15f8712184a6aa176e0021b8c65df1e.exe
    "C:\Users\Admin\AppData\Local\Temp\669bfc59550b87a86c5e87d33da3e63be15f8712184a6aa176e0021b8c65df1e.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:2344
    • C:\Users\Admin\AppData\Local\Temp\669bfc59550b87a86c5e87d33da3e63be15f8712184a6aa176e0021b8c65df1e.exe
      "C:\Users\Admin\AppData\Local\Temp\669bfc59550b87a86c5e87d33da3e63be15f8712184a6aa176e0021b8c65df1e.exe"
      2⤵
      • Suspicious use of NtCreateThreadExHideFromDebugger
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2700

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\nsz9156.tmp\System.dll

    Filesize

    11KB

    MD5

    fc3772787eb239ef4d0399680dcc4343

    SHA1

    db2fa99ec967178cd8057a14a428a8439a961a73

    SHA256

    9b93c61c9d63ef8ec80892cc0e4a0877966dca9b0c3eb85555cebd2ddf4d6eed

    SHA512

    79e491ca4591a5da70116114b7fbb66ee15a0532386035e980c9dfe7afb59b1f9d9c758891e25bfb45c36b07afd3e171bac37a86c887387ef0e80b1eaf296c89

  • memory/2344-24-0x0000000004A40000-0x0000000005BCE000-memory.dmp

    Filesize

    17.6MB

  • memory/2344-25-0x0000000076EE1000-0x0000000077001000-memory.dmp

    Filesize

    1.1MB

  • memory/2344-26-0x0000000010004000-0x0000000010005000-memory.dmp

    Filesize

    4KB

  • memory/2344-27-0x0000000004A40000-0x0000000005BCE000-memory.dmp

    Filesize

    17.6MB

  • memory/2700-28-0x0000000001700000-0x000000000288E000-memory.dmp

    Filesize

    17.6MB

  • memory/2700-29-0x0000000076F68000-0x0000000076F69000-memory.dmp

    Filesize

    4KB

  • memory/2700-30-0x0000000076F85000-0x0000000076F86000-memory.dmp

    Filesize

    4KB

  • memory/2700-31-0x00000000004A0000-0x00000000016F4000-memory.dmp

    Filesize

    18.3MB

  • memory/2700-33-0x0000000076EE1000-0x0000000077001000-memory.dmp

    Filesize

    1.1MB

  • memory/2700-32-0x0000000001700000-0x000000000288E000-memory.dmp

    Filesize

    17.6MB

  • memory/2700-34-0x00000000004A0000-0x00000000004E2000-memory.dmp

    Filesize

    264KB

  • memory/2700-35-0x00000000351F0000-0x0000000035794000-memory.dmp

    Filesize

    5.6MB

  • memory/2700-36-0x0000000035150000-0x00000000351B6000-memory.dmp

    Filesize

    408KB

  • memory/2700-37-0x00000000360E0000-0x0000000036130000-memory.dmp

    Filesize

    320KB

  • memory/2700-38-0x0000000036130000-0x00000000361C2000-memory.dmp

    Filesize

    584KB

  • memory/2700-39-0x0000000036200000-0x000000003620A000-memory.dmp

    Filesize

    40KB