Overview

overview

10

Static

static

8

HR-Ageing-Report.ppt

windows7_x64

10

HR-Ageing-Report.ppt

windows10_x64

10

Sharing

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General

  • Target

    HR-Ageing-Report.ppt

  • Size

    82KB

  • Sample

    210731-e725nnlpgn

  • MD5

    e2c84712e1b4ff68b9d85729dbda044a

  • SHA1

    c095064894d2ac8c0864d68d5de14324e49ce010

  • SHA256

    8a7eedce7576affb0bcb4fad28a5fdb6c5581efa956aaba80193c18b475266c4

  • SHA512

    a5af0aae421fdac20de13c008d4f5656f3efcc1d2805c75f467e097687056ea96e6e2981fe71b27dc05c0027904608b673f008ab248686a2a12c938af4ad07f3

Score
10/10
oskiinfostealermacrospywaresuricata

Malware Config

Extracted

Family

oski

C2

103.99.1.60/we/king/

Targets

    • Target

      HR-Ageing-Report.ppt

    • Size

      82KB

    • MD5

      e2c84712e1b4ff68b9d85729dbda044a

    • SHA1

      c095064894d2ac8c0864d68d5de14324e49ce010

    • SHA256

      8a7eedce7576affb0bcb4fad28a5fdb6c5581efa956aaba80193c18b475266c4

    • SHA512

      a5af0aae421fdac20de13c008d4f5656f3efcc1d2805c75f467e097687056ea96e6e2981fe71b27dc05c0027904608b673f008ab248686a2a12c938af4ad07f3

    Score
    10/10
    oskiinfostealerspywaresuricata

    • Oski

      Oski is an infostealer targeting browser data, crypto wallets.

      infostealeroski

    • Process spawned unexpected child process

      This typically indicates the parent process was compromised via an exploit or macro.

    • suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (Passwords.txt)

      suricata

    • suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer Data Exfil

      suricata

    • Blocklisted process makes network request

    • Downloads MZ/PE file

    • Loads dropped DLL

    • Accesses cryptocurrency files/wallets, possible credential harvesting

      spyware

    • Process spawned suspicious child process

      This child process is typically not spawned unless (for example) the parent process crashes. This typically indicates the parent process was unsuccessfully compromised.

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1
T1053

Persistence

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Modify Registry

2
T1112

Install Root Certificate

1
T1130

Credential Access

Credentials in Files

1
T1081

Discovery

System Information Discovery

2
T1082

Query Registry

1
T1012

Lateral Movement

Collection

Data from Local System

1
T1005

Exfiltration

Command and Control

Impact

Tasks