General

  • Target

    Wire Transfer Form.zip

  • Size

    126KB

  • Sample

    230401-nfezlshf69

  • MD5

    e5ea5b6aa6c5ecbb8be8ccbf3c336d31

  • SHA1

    93ee111129520d09d8415cd48a556b4857df4230

  • SHA256

    f67a5257b3e972575baeb2e6442d5d5232e149f2a549f99ed9a2b67345e8b1a2

  • SHA512

    bb781cf30f67d0e9ae81cd5b8cc95b62881733ec29b6e0ef98dfd2c22636ef6d802d0574ef7d8a0dd008e0d463a9fed2156162d35af2fad86c4ddbfb61a1f28e

  • SSDEEP

    3072:hgGOmDZnl1zG8ZklTRB8dtg0/FW3Qnn8Nr+U9OAzsNIYt:hgiZlU8ZklTRB8dh/FbnItsp

Malware Config

Extracted

Family

agenttesla

Credentials

Targets

    • Target

      Wire Transfer Form.exe

    • Size

      341KB

    • MD5

      d87984674b4e613778c3652753aeddd9

    • SHA1

      44d3585abe662f7955bd862641ef2f41a3bc01cb

    • SHA256

      4b0b81952d07396b9b719f0b0fd12ed7bf652c0cb4640e05c849c342b0d7bfc6

    • SHA512

      c3f6585822e93dda13fb6cc8d6409933d0e8e3897626f16a0c40aa9a445b875a5c75d5e24816243735b3a7e0e873bf9084120485a95e70b4d61db933ae8fe364

    • SSDEEP

      6144:0mtUxVlYuwrXitD5CBJvtWr1jTV6E+HJAvXeRi/2:jcau0Xitv/

    • AgentTesla

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

    • Checks computer location settings

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

    • 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.

    • Accesses Microsoft Outlook profiles

    • 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 v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

1
T1112

Credential Access

Credentials in Files

3
T1081

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

3
T1005

Email Collection

1
T1114

Tasks