General

  • Target

    55f9badb3207ed1867a1da4721c65f4dc284cd4a49968266e530e52b84b2ef21

  • Size

    255KB

  • Sample

    221123-zw1rssea24

  • MD5

    7918565ccd637d96a24b00726bd7646f

  • SHA1

    c5f3ee09d8365c5be1609f61c6c4b6f7627ddbf8

  • SHA256

    55f9badb3207ed1867a1da4721c65f4dc284cd4a49968266e530e52b84b2ef21

  • SHA512

    4ac7823e403a117bf37ba563bf0fdcc091a9d7a8568f7df3a5e983f3fcff2c90ac0a6f4d5cc1837fe8eca75ce6050e77f7a160632e4fc9564e1c0d27693dffde

  • SSDEEP

    3072:MMDb50WrZa8jCgae5+VQkGdUQFDxePZ2SBaQJXkNRtXlNGKaUIQW/qlQBG3mmTJg:1xlZam+akqx6YQJXcNlEHUIQeE3mmBI1

Malware Config

Targets

    • Target

      55f9badb3207ed1867a1da4721c65f4dc284cd4a49968266e530e52b84b2ef21

    • Size

      255KB

    • MD5

      7918565ccd637d96a24b00726bd7646f

    • SHA1

      c5f3ee09d8365c5be1609f61c6c4b6f7627ddbf8

    • SHA256

      55f9badb3207ed1867a1da4721c65f4dc284cd4a49968266e530e52b84b2ef21

    • SHA512

      4ac7823e403a117bf37ba563bf0fdcc091a9d7a8568f7df3a5e983f3fcff2c90ac0a6f4d5cc1837fe8eca75ce6050e77f7a160632e4fc9564e1c0d27693dffde

    • SSDEEP

      3072:MMDb50WrZa8jCgae5+VQkGdUQFDxePZ2SBaQJXkNRtXlNGKaUIQW/qlQBG3mmTJg:1xlZam+akqx6YQJXcNlEHUIQeE3mmBI1

    • Modifies visibility of file extensions in Explorer

    • Modifies visiblity of hidden/system files in Explorer

    • Windows security bypass

    • Disables RegEdit via registry modification

    • Executes dropped EXE

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Loads dropped DLL

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Windows security modification

    • Adds Run key to start application

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Modifies WinLogon

    • AutoIT Executable

      AutoIT scripts compiled to PE executables.

    • Drops file in System32 directory

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Hidden Files and Directories

2
T1158

Registry Run Keys / Startup Folder

1
T1060

Winlogon Helper DLL

1
T1004

Defense Evasion

Hidden Files and Directories

2
T1158

Modify Registry

7
T1112

Disabling Security Tools

2
T1089

Credential Access

Credentials in Files

1
T1081

Discovery

Query Registry

4
T1012

System Information Discovery

5
T1082

Peripheral Device Discovery

1
T1120

Collection

Data from Local System

1
T1005

Tasks