Overview

overview

10

Static

static

3

sigmasoft3.exe

windows10-ltsc 2021-x64

10

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General

  • Target

    sigmasoft3.exe

  • Size

    12.8MB

  • Sample

    241111-vvc7wsvrdk

  • MD5

    aa456e4c575655fe9bb3c77802001a79

  • SHA1

    56fcf170358da522c856fad9c9baea64ea90d04c

  • SHA256

    eff428d886d5836082ce5d6ea48af9a2fd411188a8be54f7f67ff3d9ba557a44

  • SHA512

    1f05f12ba147258c388791689b678fab42a09cef555493753f06cbc1e388ebeebab902599bf644d01bf52d0d9a85a33ad70bc39669df2ceb32f9740219fe0c38

  • SSDEEP

    196608:ZqwbT2PrGWsSWCSHhINEDIGMVIiSmY1EYKq59YNh0tMGEy/WAKfK6EaK6pMo:lSPVPSHFDIDOb5NtMjy/yfK66c

Score
10/10
dcratxmrigcollectioncredential_accessdefense_evasiondiscoveryevasionexecutioninfostealerminerpersistenceprivilege_escalationratspywarestealerupx

Malware Config

Targets

    • Target

      sigmasoft3.exe

    • Size

      12.8MB

    • MD5

      aa456e4c575655fe9bb3c77802001a79

    • SHA1

      56fcf170358da522c856fad9c9baea64ea90d04c

    • SHA256

      eff428d886d5836082ce5d6ea48af9a2fd411188a8be54f7f67ff3d9ba557a44

    • SHA512

      1f05f12ba147258c388791689b678fab42a09cef555493753f06cbc1e388ebeebab902599bf644d01bf52d0d9a85a33ad70bc39669df2ceb32f9740219fe0c38

    • SSDEEP

      196608:ZqwbT2PrGWsSWCSHhINEDIGMVIiSmY1EYKq59YNh0tMGEy/WAKfK6EaK6pMo:lSPVPSHFDIDOb5NtMjy/yfK66c

    Score
    10/10
    dcratxmrigcollectioncredential_accessdefense_evasiondiscoveryevasionexecutioninfostealerminerpersistenceprivilege_escalationratspywarestealerupx

    • DcRat

      DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.

      ratinfostealerdcrat

    • Dcrat family

      dcrat

    • Deletes Windows Defender Definitions

      Uses mpcmdrun utility to delete all AV definitions.

      evasion

    • Process spawned unexpected child process

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

    • Xmrig family

      xmrig

    • xmrig

      XMRig is a high performance, open source, cross platform CPU/GPU miner.

      minerxmrig

    • DCRat payload

      Detects payload of DCRat, commonly dropped by NSIS installers.

      rat

    • XMRig Miner payload

      miner

    • Command and Scripting Interpreter: PowerShell

      Using powershell.exe command.

      execution

    • Creates new service(s)

      persistenceexecution

    • Downloads MZ/PE file

    • Drops file in Drivers directory

    • Stops running service(s)

      evasionexecution

    • Checks computer location settings

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

    • Clipboard Data

      Adversaries may collect data stored in the clipboard from users copying information within or between applications.

      collection

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of web browsers

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

      spywarestealer

    • Unsecured Credentials: Credentials In Files

      Steal credentials from unsecured files.

      credential_accessstealer

    • Accesses cryptocurrency files/wallets, possible credential harvesting

      spyware

    • Legitimate hosting services abused for malware hosting/C2

    • Looks up external IP address via web service

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

    • Obfuscated Files or Information: Command Obfuscation

      Adversaries may obfuscate content during command execution to impede detection.

      defense_evasion

    • Power Settings

      powercfg controls all configurable power system settings on a Windows system and can be abused to prevent an infected host from locking or shutting down.

      persistence

    • Enumerates processes with tasklist

      discovery

    • Hide Artifacts: Hidden Files and Directories

      defense_evasion

    • Suspicious use of SetThreadContext

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

      upx
    behavioral1

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

2
T1059

PowerShell

1
T1059.001

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

System Services

2
T1569

Service Execution

2
T1569.002

Persistence

Create or Modify System Process

2
T1543

Windows Service

2
T1543.003

Event Triggered Execution

1
T1546

Netsh Helper DLL

1
T1546.007

Power Settings

1
T1653

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Privilege Escalation

Create or Modify System Process

2
T1543

Windows Service

2
T1543.003

Event Triggered Execution

1
T1546

Netsh Helper DLL

1
T1546.007

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Defense Evasion

Hide Artifacts

2
T1564

Hidden Files and Directories

2
T1564.001

Impair Defenses

2
T1562

Obfuscated Files or Information

1
T1027

Command Obfuscation

1
T1027.010

Credential Access

Credentials from Password Stores

1
T1555

Credentials from Web Browsers

1
T1555.003

Unsecured Credentials

3
T1552

Credentials In Files

3
T1552.001

Discovery

Browser Information Discovery

1
T1217

Process Discovery

1
T1057

Query Registry

3
T1012

Remote System Discovery

1
T1018

System Information Discovery

5
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

System Network Configuration Discovery

2
T1016

Internet Connection Discovery

1
T1016.001

Wi-Fi Discovery

1
T1016.002

Lateral Movement

Collection

Clipboard Data

1
T1115

Data from Local System

2
T1005

Command and Control

Web Service

1
T1102

Exfiltration

Impact

Service Stop

1
T1489

Tasks