General

  • Target

    5 - Coppdf.zip

  • Size

    8KB

  • Sample

    211109-bxk6qsbdfn

  • MD5

    2d04432a42b6ecda060449936228cd0a

  • SHA1

    8932f17d5351716a212ab881064863762adbc5fc

  • SHA256

    3876e223172031e9439671a3a92431f56626d4a4a086bd04e1a5af7c2531e211

  • SHA512

    3dc501cf0260639d92dfc9cfc3553ae66a9f96173c07fcd484283c8c48f47cf05ce01c1abc7343de271df8858c234f64b16a1e7c4bcb99b174cc79e7adc2b36c

Malware Config

Targets

    • Target

      5 - Cop'pdf.ppam

    • Size

      9KB

    • MD5

      b9d1df2b77e53cb16cf16d49fc58a389

    • SHA1

      781d0110c515b97e6e59a32553ffede3b348c4c7

    • SHA256

      7f34a31e373c251feb722cb17aba6d8f2d2cafe646a0c2cd584f75f99b526d53

    • SHA512

      0f7d99c2ebb24a005c6aa7a5b76fa438123639466741452f48baff058c615e583405c1ef692bf8d127a184d25956bbe7b5fe7b95e47eae94f56f0a09848c3f09

    • AgentTesla

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

    • Process spawned unexpected child process

      This typically indicates the parent process was compromised via an exploit or macro.

    • Remcos

      Remcos is a closed-source remote control and surveillance software.

    • AgentTesla Payload

    • Blocklisted process makes network request

    • Drops file in Drivers directory

    • Executes dropped EXE

    • Modifies Windows Firewall

    • Drops startup file

    • 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.

    • Accesses Microsoft Outlook profiles

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scheduled Task

1
T1053

Persistence

Modify Existing Service

1
T1031

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Modify Registry

2
T1112

Install Root Certificate

1
T1130

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