General

  • Target

    Bank Deposit Slip 230228.docx

  • Size

    10KB

  • Sample

    230314-g7rzxsdh36

  • MD5

    2105fbcf7af88cca80cbdae1768bd87a

  • SHA1

    4af4b2bdd5324d83c69cd31c12dd4efd0b14281d

  • SHA256

    36b207f1cf4470480efbaf303ce82a8214d1c40e3b991f6e3646c04fb0557138

  • SHA512

    adb9ebcabaa6a6b5a3fc0f44390e2bed1a47c7ea976baa3d9f192d1a38664fa70ad620f55a4859cfbf8a9d7e915c2144ff212db4d7d9a9ef5e75bebbcbb70c62

  • SSDEEP

    192:ScIMmtP1aIG/bslPL++uO5ebl+CVWBXJC0c3fJ:SPXU/slT+LOkbHkZC9x

Malware Config

Extracted

Rule
Microsoft Office WebSettings Relationship
C2

http://ZZZ0000SDFDS0F0000000Z0Z00000000ZZ000000000000W0WW0W0W0W0W0W0W00W0W0W0W00Z0Z0Z0Z0Z0Z00Z0Z0Z00W0W0W00W@3221450129/73...................73...............doc

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.palumalimited.com
  • Port:
    587
  • Username:
    novlove@palumalimited.com
  • Password:
    85h!UAfvL2AE
  • Email To:
    mullarred@gmail.com

Targets

    • Target

      Bank Deposit Slip 230228.docx

    • Size

      10KB

    • MD5

      2105fbcf7af88cca80cbdae1768bd87a

    • SHA1

      4af4b2bdd5324d83c69cd31c12dd4efd0b14281d

    • SHA256

      36b207f1cf4470480efbaf303ce82a8214d1c40e3b991f6e3646c04fb0557138

    • SHA512

      adb9ebcabaa6a6b5a3fc0f44390e2bed1a47c7ea976baa3d9f192d1a38664fa70ad620f55a4859cfbf8a9d7e915c2144ff212db4d7d9a9ef5e75bebbcbb70c62

    • SSDEEP

      192:ScIMmtP1aIG/bslPL++uO5ebl+CVWBXJC0c3fJ:SPXU/slT+LOkbHkZC9x

    • AgentTesla

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

    • Blocklisted process makes network request

    • Downloads MZ/PE file

    • Abuses OpenXML format to download file from external location

    • Executes dropped EXE

    • Loads dropped DLL

    • 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.

    • Uses the VBS compiler for execution

    • Accesses Microsoft Outlook profiles

    • Adds Run key to start application

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scripting

1
T1064

Scheduled Task

1
T1053

Exploitation for Client Execution

1
T1203

Persistence

Registry Run Keys / Startup Folder

1
T1060

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Scripting

1
T1064

Modify Registry

2
T1112

Credential Access

Credentials in Files

3
T1081

Discovery

System Information Discovery

3
T1082

Query Registry

2
T1012

Collection

Data from Local System

3
T1005

Email Collection

1
T1114

Tasks