General

  • Target

    46ddcd557521e886e2548e72097e01d6.exe

  • Size

    262KB

  • Sample

    210420-5bryl8ey16

  • MD5

    46ddcd557521e886e2548e72097e01d6

  • SHA1

    fd4f34bc1ee6df6d2d04860b2b39349ee6221bf7

  • SHA256

    3163e680a9b1c5c3b4e64b0fe808b79c5090a69bb3a359fbe18bbf9064dc4517

  • SHA512

    79abb9091c52d225c57db429727b164f5f8ee1de03a597592c42f57f32281a26bc4d400fc670553b8e34697575558616e971fbf81d5901a8007315452ba84071

Malware Config

Extracted

Family

oski

C2

orisinlog.com

Targets

    • Target

      46ddcd557521e886e2548e72097e01d6.exe

    • Size

      262KB

    • MD5

      46ddcd557521e886e2548e72097e01d6

    • SHA1

      fd4f34bc1ee6df6d2d04860b2b39349ee6221bf7

    • SHA256

      3163e680a9b1c5c3b4e64b0fe808b79c5090a69bb3a359fbe18bbf9064dc4517

    • SHA512

      79abb9091c52d225c57db429727b164f5f8ee1de03a597592c42f57f32281a26bc4d400fc670553b8e34697575558616e971fbf81d5901a8007315452ba84071

    • Oski

      Oski is an infostealer targeting browser data, crypto wallets.

    • Deletes itself

    • 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

    • Adds Run key to start application

    • Checks installed software on the system

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

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

1
T1112

Credential Access

Credentials in Files

2
T1081

Discovery

Query Registry

2
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

2
T1005

Tasks