Overview

overview

10

Static

static

Citadele B...ts.rtf

windows7-x64

10

Citadele B...ts.rtf

windows10-2004-x64

1

Sharing

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General

  • Target

    Citadele Banka Maksājuma Dokuments.doc

  • Size

    1.6MB

  • Sample

    230202-nb9neshh2v

  • MD5

    d2d2b53c4ababf40cc85663926565ec2

  • SHA1

    926771aba5407c60a5954644cabc83d363fc8568

  • SHA256

    24feb9614d50cb60884e390721c57a8f126f2b53dd9f218b318c1cab78320470

  • SHA512

    b8074fcac0134c8d7bd53b4363409845afe7deb4185b0631617b362193de6d905412f1701e01409c8674bba57cd62e66938aca8298a0b12f06a1eac3d35190e4

  • SSDEEP

    24576:1e0fYs45FITKeskdTgK5wUe0pA8GSPtaXLr2+qLGRrOiYETqsgiyJNpyMTvlEp1j:M

Score
10/10
purecryptercollectiondownloaderloaderpersistencespywarestealer

Malware Config

Targets

    • Target

      Citadele Banka Maksājuma Dokuments.doc

    • Size

      1.6MB

    • MD5

      d2d2b53c4ababf40cc85663926565ec2

    • SHA1

      926771aba5407c60a5954644cabc83d363fc8568

    • SHA256

      24feb9614d50cb60884e390721c57a8f126f2b53dd9f218b318c1cab78320470

    • SHA512

      b8074fcac0134c8d7bd53b4363409845afe7deb4185b0631617b362193de6d905412f1701e01409c8674bba57cd62e66938aca8298a0b12f06a1eac3d35190e4

    • SSDEEP

      24576:1e0fYs45FITKeskdTgK5wUe0pA8GSPtaXLr2+qLGRrOiYETqsgiyJNpyMTvlEp1j:M

    Score
    10/10
    purecryptercollectiondownloaderloaderpersistencespywarestealer

    • Detect PureCrypter injector

      loader

    • PureCrypter

      PureCrypter is a .NET malware loader first seen in early 2021.

      loaderdownloaderpurecrypter

    • Blocklisted process makes network request

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of local email clients

      Email clients store some user data on disk where infostealers will often target it.

      spywarestealer

    • Reads user/profile data of web browsers

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

      spywarestealer

    • Accesses Microsoft Outlook profiles

      collection

    • Adds Run key to start application

      persistence

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Exploitation for Client Execution

1
T1203

Persistence

Registry Run Keys / Startup Folder

1
T1060

Privilege Escalation

Defense Evasion

Modify Registry

2
T1112

Credential Access

Credentials in Files

2
T1081

Discovery

System Information Discovery

3
T1082

Query Registry

2
T1012

Lateral Movement

Collection

Data from Local System

2
T1005

Email Collection

1
T1114

Exfiltration

Command and Control

Impact

Tasks