Overview

overview

10

Static

static

10

HEUR-Troja...99.exe

windows7-x64

10

HEUR-Troja...99.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    HEUR-Trojan-Ransom.Win32.Encoder.vho-188b2408a0b511905428f95eacc3b60f5c9db195fa8493891baf3db8a4de1e99.exe

  • Size

    3.4MB

  • Sample

    220920-fppleacac5

  • MD5

    35acbf4b0e8cfe8b9c3c2d5da5eb0131

  • SHA1

    bc2d3b96b8f5d227b41611f64216753a898e804c

  • SHA256

    188b2408a0b511905428f95eacc3b60f5c9db195fa8493891baf3db8a4de1e99

  • SHA512

    381f3a0867207e9824a1382620c17d1b445e307512982279a285e7cb4ce2f79a7f48b549d5c78e0f1ef707ff10ec249784a1d6e88788eba1e861f492f19fe2ca

  • SSDEEP

    98304:NUqA6Sp+ZIogCxfwijqisUzS5Q1J6KtqxxwwpJKILMW:JAOC/MINxxVpEp

Score
10/10
legionlockerevasionransomwarethemidatrojan

Malware Config

Targets

    • Target

      HEUR-Trojan-Ransom.Win32.Encoder.vho-188b2408a0b511905428f95eacc3b60f5c9db195fa8493891baf3db8a4de1e99.exe

    • Size

      3.4MB

    • MD5

      35acbf4b0e8cfe8b9c3c2d5da5eb0131

    • SHA1

      bc2d3b96b8f5d227b41611f64216753a898e804c

    • SHA256

      188b2408a0b511905428f95eacc3b60f5c9db195fa8493891baf3db8a4de1e99

    • SHA512

      381f3a0867207e9824a1382620c17d1b445e307512982279a285e7cb4ce2f79a7f48b549d5c78e0f1ef707ff10ec249784a1d6e88788eba1e861f492f19fe2ca

    • SSDEEP

      98304:NUqA6Sp+ZIogCxfwijqisUzS5Q1J6KtqxxwwpJKILMW:JAOC/MINxxVpEp

    Score
    10/10
    legionlockerevasionransomwarethemidatrojan

    • Detected LegionLocker ransomware

      Sample contains strings associated with the LegionLocker family.

      ransomware

    • LegionLocker

      Ransomware family active in 2021.

      ransomwarelegionlocker

    • Identifies VirtualBox via ACPI registry values (likely anti-VM)

      evasion

    • Executes dropped EXE

    • Modifies extensions of user files

      Ransomware generally changes the extension on encrypted files.

      ransomware

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • Checks computer location settings

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

    • Loads dropped DLL

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

      themida

    • Checks whether UAC is enabled

      evasiontrojan

    • Drops desktop.ini file(s)

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

1
T1497

Credential Access

Discovery

Query Registry

3
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

4
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks