Analysis

  • max time kernel
    137s
  • max time network
    173s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27-11-2022 13:55

General

  • Target

    Dustit RFQ.exe

  • Size

    1.0MB

  • MD5

    fd330af7ee997322d0ba212fa97cfc63

  • SHA1

    5c712f65a5ddc1a97b3d1622914503f3e037da8d

  • SHA256

    260474827b7c64dc399dad23b64ef0ed54e89c779fc284479a16518b9ee7964e

  • SHA512

    c43a769c39d9ada81145ff8b070be351ee406f7f9a954bce346167687b83f7a267ca1b316b7a7b2d02522ced16894efb6c4acb8ef0ab02ef2686c09769ecf984

  • SSDEEP

    24576:6XEtCFilvIgvpjRpYyDaG6N/aqU1vgk3bx3mi5ASg:6XRFgxjbd2G6BaqU1jrx15AS

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    ftp
  • Host:
    ftp://carbonwatt.com
  • Port:
    21
  • Username:
    [email protected]
  • Password:
    k)G8;,rq1MNz

Signatures

  • AgentTesla

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

  • 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 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Adds Run key to start application 2 TTPs 1 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
  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Dustit RFQ.exe
    "C:\Users\Admin\AppData\Local\Temp\Dustit RFQ.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3408
    • C:\Users\Admin\AppData\Local\Temp\Dustit RFQ.exe
      "C:\Users\Admin\AppData\Local\Temp\Dustit RFQ.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:4244

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

1
T1112

Credential Access

Credentials in Files

3
T1081

Collection

Data from Local System

3
T1005

Email Collection

1
T1114

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/3408-132-0x0000000000F10000-0x000000000101C000-memory.dmp
    Filesize

    1.0MB

  • memory/3408-133-0x0000000008370000-0x0000000008914000-memory.dmp
    Filesize

    5.6MB

  • memory/3408-134-0x0000000007EA0000-0x0000000007F32000-memory.dmp
    Filesize

    584KB

  • memory/3408-135-0x0000000007E90000-0x0000000007E9A000-memory.dmp
    Filesize

    40KB

  • memory/3408-136-0x000000000B9F0000-0x000000000BA8C000-memory.dmp
    Filesize

    624KB

  • memory/4244-137-0x0000000000000000-mapping.dmp
  • memory/4244-138-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/4244-139-0x0000000005670000-0x00000000056D6000-memory.dmp
    Filesize

    408KB

  • memory/4244-140-0x0000000006A80000-0x0000000006AD0000-memory.dmp
    Filesize

    320KB