General

  • Target

    Revised Offer.doc

  • Size

    22KB

  • Sample

    221128-nz117aff6w

  • MD5

    14ec89b35126d6529a0ac2500bbfc12c

  • SHA1

    6bf370828c12270c9e2e941b0b47a96de9ef0256

  • SHA256

    77be1b4b42c069b513628a90e7d70dafed14dbb280bd92665f3c7e872af46ee9

  • SHA512

    df4ca4c386ef1caf0cf5ec8f1790f7c4a3f295646a840d26c1ee08f2a6ee9973dc12b10e027c3775e704afaa2caa181578fd3d42024b13f7e214775a45739cee

  • SSDEEP

    384:VQMmdOFNYY0aaaIswqPeOrka1+fHQJ+t3rQkRhZtaenFdN7y5ksl26emMJtjyMGG:DFx0XaIsnPRIa4fwJMXaeF/7y+Y2Sk80

Malware Config

Extracted

Family

snakekeylogger

Credentials

Targets

    • Target

      Revised Offer.doc

    • Size

      22KB

    • MD5

      14ec89b35126d6529a0ac2500bbfc12c

    • SHA1

      6bf370828c12270c9e2e941b0b47a96de9ef0256

    • SHA256

      77be1b4b42c069b513628a90e7d70dafed14dbb280bd92665f3c7e872af46ee9

    • SHA512

      df4ca4c386ef1caf0cf5ec8f1790f7c4a3f295646a840d26c1ee08f2a6ee9973dc12b10e027c3775e704afaa2caa181578fd3d42024b13f7e214775a45739cee

    • SSDEEP

      384:VQMmdOFNYY0aaaIswqPeOrka1+fHQJ+t3rQkRhZtaenFdN7y5ksl26emMJtjyMGG:DFx0XaIsnPRIa4fwJMXaeF/7y+Y2Sk80

    • Snake Keylogger

      Keylogger and Infostealer first seen in November 2020.

    • Snake Keylogger payload

    • Blocklisted process makes network request

    • Downloads MZ/PE file

    • 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.

    • 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

Execution

Exploitation for Client Execution

1
T1203

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