Resubmissions

13-04-2023 16:44

230413-t8tlcsea6x 10

31-03-2023 18:26

230331-w269zscd64 10

General

  • Target

    PO.2402986.PDF.exe

  • Size

    1.3MB

  • Sample

    230331-w269zscd64

  • MD5

    6ac943b332528abd3402c0954145bf05

  • SHA1

    8a17715627e7017d2b45c09f4c978917880e2876

  • SHA256

    bddee346a47d5cfbc48964020142db3cc659930094f46f8d63c072422499c7ed

  • SHA512

    69fd5ffb81c100caab99b7b4e02de092666d4b591248ca6b604b3aedd9405c9a94d6167a9c22bddb82e036bd991ae0da4115fd9337604c6e8aac94a65a928fb7

  • SSDEEP

    24576:pE6VLynkgY8Lsz9JfAH4sx+dV8Iz7wMFaael:pEVY8We4ZeGfel

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot1952154144:AAEHUKomldKQIyjgq_MWw4YWiGcA_iwz6T4/sendDocument

Targets

    • Target

      PO.2402986.PDF.exe

    • Size

      1.3MB

    • MD5

      6ac943b332528abd3402c0954145bf05

    • SHA1

      8a17715627e7017d2b45c09f4c978917880e2876

    • SHA256

      bddee346a47d5cfbc48964020142db3cc659930094f46f8d63c072422499c7ed

    • SHA512

      69fd5ffb81c100caab99b7b4e02de092666d4b591248ca6b604b3aedd9405c9a94d6167a9c22bddb82e036bd991ae0da4115fd9337604c6e8aac94a65a928fb7

    • SSDEEP

      24576:pE6VLynkgY8Lsz9JfAH4sx+dV8Iz7wMFaael:pEVY8We4ZeGfel

    • AgentTesla

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

    • AgentTesla payload

    • 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.

    • Uses the VBS compiler for execution

    • Accesses Microsoft Outlook profiles

    • Adds Run key to start application

    • 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

Scripting

1
T1064

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Virtualization/Sandbox Evasion

2
T1497

Scripting

1
T1064

Modify Registry

1
T1112

Discovery

Query Registry

4
T1012

Virtualization/Sandbox Evasion

2
T1497

System Information Discovery

2
T1082

Peripheral Device Discovery

1
T1120

Collection

Email Collection

1
T1114

Tasks