General

  • Target

    31a11a0b81f43eeb43887467bbebf5fd.exe

  • Size

    6.8MB

  • Sample

    230318-pl6vysec8w

  • MD5

    31a11a0b81f43eeb43887467bbebf5fd

  • SHA1

    187eb286dd68d8421c55a8615ab584cdc280b108

  • SHA256

    21e4c999735b8078454d3407c9556aade8d9d477c3b7d2aebc3eee5b5670a3bd

  • SHA512

    924efe7a92bac35662e5a0e12f49ee18fcd37866d9e2fe7fed3776bc94d87c3a738bffa9bf1b87b47dc1a58154160f5bea2cb026b8204aecaa3cca759386a0f8

  • SSDEEP

    98304:zNESvhK3NdZ79CL5ii5wSreJUHKX0l+6p1TzUbjOl9czfxkcVrnkF9QUa8RP:5dKV9CYSwSrgUHKXXKijWWzfxkornzc

Malware Config

Targets

    • Target

      31a11a0b81f43eeb43887467bbebf5fd.exe

    • Size

      6.8MB

    • MD5

      31a11a0b81f43eeb43887467bbebf5fd

    • SHA1

      187eb286dd68d8421c55a8615ab584cdc280b108

    • SHA256

      21e4c999735b8078454d3407c9556aade8d9d477c3b7d2aebc3eee5b5670a3bd

    • SHA512

      924efe7a92bac35662e5a0e12f49ee18fcd37866d9e2fe7fed3776bc94d87c3a738bffa9bf1b87b47dc1a58154160f5bea2cb026b8204aecaa3cca759386a0f8

    • SSDEEP

      98304:zNESvhK3NdZ79CL5ii5wSreJUHKX0l+6p1TzUbjOl9czfxkcVrnkF9QUa8RP:5dKV9CYSwSrgUHKXXKijWWzfxkornzc

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

    • 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.

    • Deletes itself

    • 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.

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • Checks installed software on the system

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

    • Checks whether UAC is enabled

    • Maps connected drives based on registry

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

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Virtualization/Sandbox Evasion

1
T1497

Credential Access

Credentials in Files

2
T1081

Discovery

Query Registry

6
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

6
T1082

Peripheral Device Discovery

1
T1120

Collection

Data from Local System

2
T1005

Tasks