General

  • Target

    8C36F8A010E9781BDA4076852EFB05A7.exe

  • Size

    200KB

  • Sample

    240113-gj57msdgc8

  • MD5

    8c36f8a010e9781bda4076852efb05a7

  • SHA1

    155d37c5d7cfda081a74080dc288a80c7ecdc643

  • SHA256

    2e77a1b324229a10ce5ac15a916526eff4a1e44c291bb918d6ed5329bc56f81b

  • SHA512

    5712cc4f13ab99173aae0708bf94961762625dbc78d8f77c54688c7acccd01b7117cd7f2a36120d3ae832b4f82582773b1cb00713481cd90e1944ffd6a2f8f8c

  • SSDEEP

    3072:WfUomEuYm98dlSq7gt5q7Dx+XgS6aCEwhOfUbCalNT2pbB3fIr1Xi6FLPo3c:WfUauY68uSWCx+XA7mg2pNS1Ljo3c

Malware Config

Extracted

Family

oski

C2

9entrevera.sa.com/o/

Targets

    • Target

      8C36F8A010E9781BDA4076852EFB05A7.exe

    • Size

      200KB

    • MD5

      8c36f8a010e9781bda4076852efb05a7

    • SHA1

      155d37c5d7cfda081a74080dc288a80c7ecdc643

    • SHA256

      2e77a1b324229a10ce5ac15a916526eff4a1e44c291bb918d6ed5329bc56f81b

    • SHA512

      5712cc4f13ab99173aae0708bf94961762625dbc78d8f77c54688c7acccd01b7117cd7f2a36120d3ae832b4f82582773b1cb00713481cd90e1944ffd6a2f8f8c

    • SSDEEP

      3072:WfUomEuYm98dlSq7gt5q7Dx+XgS6aCEwhOfUbCalNT2pbB3fIr1Xi6FLPo3c:WfUauY68uSWCx+XA7mg2pNS1Ljo3c

    • Oski

      Oski is an infostealer targeting browser data, crypto wallets.

    • Downloads MZ/PE file

    • Checks computer location settings

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

    • Deletes itself

    • Loads dropped DLL

    • Reads user/profile data of web browsers

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

    • 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.

MITRE ATT&CK Enterprise v15

Tasks