General

  • Target

    PO 0017709220.pdf (68KB).exe

  • Size

    871KB

  • Sample

    221208-wx565aaf88

  • MD5

    94370cac5c6a71ef3b1ac252d8c2d1f0

  • SHA1

    99e3a287c919446a51a29bb41b15e392381eb4d7

  • SHA256

    5fe027cf78cba3c3e99db784eff2511d0d98b0f651fb840098f4a2a3f6c7ad60

  • SHA512

    1a5a4123aae1036a29b20f559f1d0b78ff88fdceeb842106fdb27e34ff7e0a150f1e200ebd07bef56ba2b580b34eac4513e07719ab6ebc1482f9c7364ae3e431

  • SSDEEP

    24576:X8DsTl9mUzgCzfsWfJHDxtMcKQ1Qj2SoYQi3:XAsT3dJltb1Qj6Yf

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot5988122207:AAF1_KgDENpI5X2i7Phd669ok2u6BhL3kK0/

Targets

    • Target

      PO 0017709220.pdf (68KB).exe

    • Size

      871KB

    • MD5

      94370cac5c6a71ef3b1ac252d8c2d1f0

    • SHA1

      99e3a287c919446a51a29bb41b15e392381eb4d7

    • SHA256

      5fe027cf78cba3c3e99db784eff2511d0d98b0f651fb840098f4a2a3f6c7ad60

    • SHA512

      1a5a4123aae1036a29b20f559f1d0b78ff88fdceeb842106fdb27e34ff7e0a150f1e200ebd07bef56ba2b580b34eac4513e07719ab6ebc1482f9c7364ae3e431

    • SSDEEP

      24576:X8DsTl9mUzgCzfsWfJHDxtMcKQ1Qj2SoYQi3:XAsT3dJltb1Qj6Yf

    • AgentTesla

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

    • Looks for VirtualBox Guest Additions in registry

    • Looks for VMWare Tools registry key

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • 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

    • Looks up external IP address via web service

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

    • Maps connected drives based on registry

      Disk information is often read in order to detect sandboxing environments.

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scheduled Task

1
T1053

Persistence

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Virtualization/Sandbox Evasion

2
T1497

Credential Access

Credentials in Files

3
T1081

Discovery

Query Registry

5
T1012

Virtualization/Sandbox Evasion

2
T1497

System Information Discovery

4
T1082

Peripheral Device Discovery

1
T1120

Collection

Data from Local System

3
T1005

Email Collection

1
T1114

Tasks