Overview

overview

10

Static

static

25fcf7bb_b...is.exe

windows7_x64

10

25fcf7bb_b...is.exe

windows10_x64

10

Sharing

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General

  • Target

    25fcf7bb_by_Libranalysis

  • Size

    619KB

  • Sample

    210505-81wqkd9exn

  • MD5

    25fcf7bb9e23811c5a807700aec0626d

  • SHA1

    2b1239f32aaa689c8027a06ba2a8a6225a204b18

  • SHA256

    7abb15e03e0b91fac6a00c5cfb60999bc99fbe378a8decc4751c26eda959df9d

  • SHA512

    c14f168dc1be45e39f2a4cec46af5781f37db63dbeed23021ae243046009cbae2baaf7be22bfacc20f89f2872f8526ac22f56d9e6d4b4a8d41dd6450d56c5b4c

Score
10/10
evasionpersistenceransomwarespywarestealertrojan

Malware Config

Targets

    • Target

      25fcf7bb_by_Libranalysis

    • Size

      619KB

    • MD5

      25fcf7bb9e23811c5a807700aec0626d

    • SHA1

      2b1239f32aaa689c8027a06ba2a8a6225a204b18

    • SHA256

      7abb15e03e0b91fac6a00c5cfb60999bc99fbe378a8decc4751c26eda959df9d

    • SHA512

      c14f168dc1be45e39f2a4cec46af5781f37db63dbeed23021ae243046009cbae2baaf7be22bfacc20f89f2872f8526ac22f56d9e6d4b4a8d41dd6450d56c5b4c

    Score
    10/10
    evasionpersistenceransomwarespywarestealertrojan

    • Modifies WinLogon for persistence

      persistence

    • Modifies visibility of file extensions in Explorer

      evasion

    • UAC bypass

      evasiontrojan

    • Executes dropped EXE

    • Modifies extensions of user files

      Ransomware generally changes the extension on encrypted files.

      ransomware

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Loads dropped DLL

    • Reads user/profile data of web browsers

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

      spywarestealer

    • Adds Run key to start application

      persistence

    • Checks whether UAC is enabled

      evasiontrojan

    • Drops file in System32 directory

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

1
T1004

Hidden Files and Directories

1
T1158

Registry Run Keys / Startup Folder

1
T1060

Privilege Escalation

Bypass User Account Control

1
T1088

Defense Evasion

Modify Registry

6
T1112

Hidden Files and Directories

1
T1158

Bypass User Account Control

1
T1088

Disabling Security Tools

1
T1089

Credential Access

Credentials in Files

1
T1081

Discovery

Query Registry

1
T1012

System Information Discovery

3
T1082

Lateral Movement

Collection

Data from Local System

1
T1005

Exfiltration

Command and Control

Impact

Tasks