Overview

overview

10

Static

static

Ybhfk.exe

windows7_x64

10

Ybhfk.exe

windows10_x64

10

Sharing

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General

  • Target

    Ybhfk.exe

  • Size

    685KB

  • Sample

    210507-58684a54fj

  • MD5

    4087a6277a5288c9dfddee6b28895c0f

  • SHA1

    21b5e3b09c99c6da44219e53dbbe02e3c155c53a

  • SHA256

    afdbf26cb55fb5d7acb13eee328ced4ffd4fd1d42a72dc95fb1053b264ec45ee

  • SHA512

    a9b0ce9bdb3fb683fadf5947efad71c66d0de9e2f5f680c78e98ac48ab6c47967f213c5bff880798f90f236612817e09b3519493d3fece6f66497c37469a56c8

Score
10/10
oskidiscoveryinfostealerspywarestealer

Malware Config

Extracted

Family

oski

C2

209.141.40.19

Targets

    • Target

      Ybhfk.exe

    • Size

      685KB

    • MD5

      4087a6277a5288c9dfddee6b28895c0f

    • SHA1

      21b5e3b09c99c6da44219e53dbbe02e3c155c53a

    • SHA256

      afdbf26cb55fb5d7acb13eee328ced4ffd4fd1d42a72dc95fb1053b264ec45ee

    • SHA512

      a9b0ce9bdb3fb683fadf5947efad71c66d0de9e2f5f680c78e98ac48ab6c47967f213c5bff880798f90f236612817e09b3519493d3fece6f66497c37469a56c8

    Score
    10/10
    oskidiscoveryinfostealerspywarestealer

    • Oski

      Oski is an infostealer targeting browser data, crypto wallets.

      infostealeroski

    • Downloads MZ/PE file

    • Deletes itself

    • Loads dropped DLL

    • Reads user/profile data of web browsers

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

      spywarestealer

    • Accesses cryptocurrency files/wallets, possible credential harvesting

      spyware

    • Checks installed software on the system

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

      discovery

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

2
T1081

Discovery

Query Registry

2
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Data from Local System

2
T1005

Exfiltration

Command and Control

Impact

Tasks