General

  • Target

    PO.xls............................................................................exe

  • Size

    1.9MB

  • Sample

    201105-rjy4y4nxsx

  • MD5

    a6c9c1928c989b8f9197f438b672e2cc

  • SHA1

    76408657d60ea841f68cb78d37793e62b721014c

  • SHA256

    22f28d25bf6b26e0d79836e03efe49e325a6eea6b06dfea97a03c62a578f7fb1

  • SHA512

    b9d4e00975bcee7f08735ec987410cb5be4a41bfed7aff4f79b936e28e827b9a20755dbc46a691267111db33a6dcb148d132580dd8170d3ef2e0cda80b7bc2f5

Malware Config

Extracted

Family

azorult

C2

http://qdrenfa.com/~zadmin/lk/a/az/ch/index.php

Targets

    • Target

      PO.xls............................................................................exe

    • Size

      1.9MB

    • MD5

      a6c9c1928c989b8f9197f438b672e2cc

    • SHA1

      76408657d60ea841f68cb78d37793e62b721014c

    • SHA256

      22f28d25bf6b26e0d79836e03efe49e325a6eea6b06dfea97a03c62a578f7fb1

    • SHA512

      b9d4e00975bcee7f08735ec987410cb5be4a41bfed7aff4f79b936e28e827b9a20755dbc46a691267111db33a6dcb148d132580dd8170d3ef2e0cda80b7bc2f5

    • Azorult

      An information stealer that was first discovered in 2016, targeting browsing history and passwords.

    • Modifies Windows Defender Real-time Protection settings

    • Turns off Windows Defender SpyNet reporting

    • Windows security bypass

    • 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.

    • Windows security modification

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • JavaScript code in executable

    • Legitimate hosting services abused for malware hosting/C2

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Modify Existing Service

1
T1031

Defense Evasion

Modify Registry

4
T1112

Disabling Security Tools

4
T1089

Credential Access

Credentials in Files

4
T1081

Discovery

Query Registry

2
T1012

System Information Discovery

1
T1082

Collection

Data from Local System

4
T1005

Command and Control

Web Service

1
T1102

Tasks