Overview

overview

10

Static

static

729e19020c...f6.exe

windows7_x64

10

729e19020c...f6.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    45s
  • max time network
    108s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    03-05-2022 19:19

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General

  • Target

    729e19020c7b7a3d9bc9f9bdbb69fc32351ade4228e08ebb04de2da5e6b4bdf6.exe

  • Size

    1.7MB

  • MD5

    caea94dab0c8720bd97447d7f9e1ecb8

  • SHA1

    f3eb2519d75901b6c8fc6107bd354b013e6a0b71

  • SHA256

    729e19020c7b7a3d9bc9f9bdbb69fc32351ade4228e08ebb04de2da5e6b4bdf6

  • SHA512

    7752ae0ca4cece6e444af17c50c5cd2226f4c051674286529bf23c4e9f540455e54d969ab2988a7c580beb88be515bf59494b81516a3f9faafe6514123f9ecdb

Score
10/10
darkstealerechelonbackdoorbootkitcollectiondiscoveryevasionpersistencespywarestealertrojan

Malware Config

Signatures

  • Darkstealer

    Darkstealer is a file grabber, data stealer, and RAT.

    trojanbackdoordarkstealer
  • Echelon

    Echelon is a .NET stealer that targets passwords from browsers, email and cryptocurrency clients.

    stealerspywareechelon
  • Echelon - DarkStealer Fork 2 IoCs

    Payload resembles modified variant of Echelon Stealer called DarkStealer.

    stealer
  • Echelon log file 1 IoCs

    Detects a log file produced by Echelon.

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs
    evasion
  • Identifies Wine through registry keys 2 TTPs 1 IoCs

    Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

    evasion
  • Reads user/profile data of web browsers 2 TTPs

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

    spywarestealer
  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
    collection
  • Checks installed software on the system 1 TTPs

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

    discovery
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
    evasiontrojan
  • Looks up external IP address via web service 5 IoCs

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

  • Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

    Bootkits write to the MBR to gain persistence at a level below the operating system.

    bootkitpersistence
  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • Program crash 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\729e19020c7b7a3d9bc9f9bdbb69fc32351ade4228e08ebb04de2da5e6b4bdf6.exe
    "C:\Users\Admin\AppData\Local\Temp\729e19020c7b7a3d9bc9f9bdbb69fc32351ade4228e08ebb04de2da5e6b4bdf6.exe"
    1⤵
    • Identifies Wine through registry keys
    • Accesses Microsoft Outlook profiles
    • Checks whether UAC is enabled
    • Writes to the Master Boot Record (MBR)
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    • outlook_office_path
    • outlook_win_path
    PID:1980
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1980 -s 1312
      2⤵
      • Program crash
      PID:1692

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Bootkit

1
T1067

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

2
T1497

Credential Access

Credentials in Files

1
T1081

Discovery

Query Registry

3
T1012

Virtualization/Sandbox Evasion

2
T1497

System Information Discovery

1
T1082

Lateral Movement

Collection

Data from Local System

1
T1005

Email Collection

1
T1114

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

  • memory/1692-58-0x0000000000000000-mapping.dmp
    Download
  • memory/1980-54-0x00000000768D1000-0x00000000768D3000-memory.dmp
    Filesize

    8KB

    Download
  • memory/1980-55-0x0000000000400000-0x00000000007B2000-memory.dmp
    Filesize

    3.7MB

    Download
  • memory/1980-56-0x0000000000400000-0x00000000007B2000-memory.dmp
    Filesize

    3.7MB

    Download
  • memory/1980-57-0x0000000077920000-0x0000000077AA0000-memory.dmp
    Filesize

    1.5MB

    Download