Overview

overview

10

Static

static

Win10.0_Sy...re.msi

windows7_x64

8

Win10.0_Sy...re.msi

windows10-2004_x64

10

Sharing

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General

  • Target

    Win10.0_System_Upgrade_Software.msi

  • Size

    92KB

  • Sample

    220502-ftfjasgebl

  • MD5

    108c1a102c58234f4cda627079df75c3

  • SHA1

    21d6f08bd6bab100eb0b1a09c806c78577ec5b25

  • SHA256

    a0e41e8c856a4e7a71893abf513b6ebefde78dd81b37e560a29cf25a83b9df9b

  • SHA512

    0f4476005fa08acf212e1ec8bb548a9503a998e063e048de9cce438500f13ff5a98acac8ba4c3eeaf5572b583c6da9e2af23e23e3971675e260c628c2d6afb9b

Score
10/10
adwarediscoverypersistenceransomwarestealer

Malware Config

Targets

    • Target

      Win10.0_System_Upgrade_Software.msi

    • Size

      92KB

    • MD5

      108c1a102c58234f4cda627079df75c3

    • SHA1

      21d6f08bd6bab100eb0b1a09c806c78577ec5b25

    • SHA256

      a0e41e8c856a4e7a71893abf513b6ebefde78dd81b37e560a29cf25a83b9df9b

    • SHA512

      0f4476005fa08acf212e1ec8bb548a9503a998e063e048de9cce438500f13ff5a98acac8ba4c3eeaf5572b583c6da9e2af23e23e3971675e260c628c2d6afb9b

    Score
    10/10
    adwarediscoverypersistenceransomwarestealer

    • Registers COM server for autorun

      persistence

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

      ransomware

    • Blocklisted process makes network request

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Modifies Installed Components in the registry

      persistence

    • Modifies extensions of user files

      Ransomware generally changes the extension on encrypted files.

      ransomware

    • Sets file execution options in registry

      persistence

    • Loads dropped DLL

    • Adds Run key to start application

      persistence

    • Checks installed software on the system

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

      discovery

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Installs/modifies Browser Helper Object

      BHOs are DLL modules which act as plugins for Internet Explorer.

      stealeradware

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

4
T1060

Browser Extensions

1
T1176

Privilege Escalation

Defense Evasion

File Deletion

2
T1107

Modify Registry

6
T1112

Credential Access

Discovery

Query Registry

5
T1012

Peripheral Device Discovery

2
T1120

System Information Discovery

5
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Inhibit System Recovery

2
T1490

Tasks