General

  • Target

    CSOIYQRONAGPE1.xlsm

  • Size

    102KB

  • Sample

    211125-veh37sfhan

  • MD5

    cc1439b54aa4b3db324fb921b94870ef

  • SHA1

    33a4c8af524b8e37f290000c654d897b440fd86c

  • SHA256

    95b3882e2ba6d5f35be8c35aa3d047e41ec110eb7f8aa69af7652f1cc29a6fb7

  • SHA512

    a9fb3881f480ca8dd86bb707b8216b596f4a848e25c797c15fb6c57b517beafe1fb2ddeb2d56321faf17e049bae4147582fd4052e7e1153962c0f7a6085fd4dc

Malware Config

Extracted

Language
ps1
Deobfuscated
URLs
exe.dropper

http://18.192.215.191/team/z/CSOIYQRONAGPE1.exe

Targets

    • Target

      CSOIYQRONAGPE1.xlsm

    • Size

      102KB

    • MD5

      cc1439b54aa4b3db324fb921b94870ef

    • SHA1

      33a4c8af524b8e37f290000c654d897b440fd86c

    • SHA256

      95b3882e2ba6d5f35be8c35aa3d047e41ec110eb7f8aa69af7652f1cc29a6fb7

    • SHA512

      a9fb3881f480ca8dd86bb707b8216b596f4a848e25c797c15fb6c57b517beafe1fb2ddeb2d56321faf17e049bae4147582fd4052e7e1153962c0f7a6085fd4dc

    • Process spawned unexpected child process

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

    • Blocklisted process makes network request

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Deletes itself

    • 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

    • 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

Defense Evasion

Modify Registry

1
T1112

Credential Access

Credentials in Files

3
T1081

Discovery

Query Registry

2
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

3
T1005

Email Collection

1
T1114

Tasks