General

  • Target

    Doc0781123608.exe

  • Size

    94KB

  • Sample

    240523-vvh35sac82

  • MD5

    9f170077dff189a195a49d2e2904b1d6

  • SHA1

    9467dbf8dd36ebb899eed2200ab0eb5fcabc5604

  • SHA256

    4deb0f08ddd189fab483b1efcabcaf507e43a68d255ca87e1ffa32f248f1f8ac

  • SHA512

    a061207c5f11025de58d9bd143f2dc80612e8599b921b9e6d398e2394239cab702b0a9d6020eb899899df3b0a29976bf8c5043f8f2220d6a7a10d48aef7dc415

  • SSDEEP

    1536:4glqLIQqCxlxFCxMk/joIAy/vezSTXU/JyLN0wKEsvp3hGH:VqLdPxlxFhTvAd22N5psv2H

Malware Config

Extracted

Family

agenttesla

Credentials

Extracted

Family

xworm

Version

5.0

C2

178.215.236.251:717

Mutex

0AVeWj1eTvHM3Un2

Attributes
  • Install_directory

    %AppData%

  • install_file

    XClient.exe

  • telegram

    https://api.telegram.org/bot5987023205:AAFlvwKv3zD3wQ2CQAewIB6uU95uBQ25ip0/sendMessage?chat_id=5202962680

aes.plain

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    66.29.151.236
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    tCUWipA8mPMH

Targets

    • Target

      Doc0781123608.exe

    • Size

      94KB

    • MD5

      9f170077dff189a195a49d2e2904b1d6

    • SHA1

      9467dbf8dd36ebb899eed2200ab0eb5fcabc5604

    • SHA256

      4deb0f08ddd189fab483b1efcabcaf507e43a68d255ca87e1ffa32f248f1f8ac

    • SHA512

      a061207c5f11025de58d9bd143f2dc80612e8599b921b9e6d398e2394239cab702b0a9d6020eb899899df3b0a29976bf8c5043f8f2220d6a7a10d48aef7dc415

    • SSDEEP

      1536:4glqLIQqCxlxFCxMk/joIAy/vezSTXU/JyLN0wKEsvp3hGH:VqLdPxlxFhTvAd22N5psv2H

    • AgentTesla

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

    • Detect Xworm Payload

    • Xworm

      Xworm is a remote access trojan written in C#.

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Drops startup file

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads WinSCP keys stored on the system

      Tries to access WinSCP stored sessions.

    • Reads data files stored by FTP clients

      Tries to access configuration files associated with programs like FileZilla.

    • Reads user/profile data of local email clients

      Email clients store some user data on disk where infostealers will often target it.

    • Reads user/profile data of web browsers

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

    • Adds Run key to start application

    • Looks up external IP address via web service

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

    • Suspicious use of SetThreadContext

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

Credential Access

Unsecured Credentials

4
T1552

Credentials In Files

3
T1552.001

Credentials in Registry

1
T1552.002

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

4
T1005

Tasks