General

  • Target

    d8e8f88c7028ae9a38cb9998eb1d8d93a62d7326e5c5f7eb141d8cb8b658213d

  • Size

    5.7MB

  • Sample

    220919-stblkaeff4

  • MD5

    bebd4982ccca9f7b4f9f40fe05ecdf65

  • SHA1

    d9643b6b074f6bc9099b1a0b9ef583cd1876daf9

  • SHA256

    d8e8f88c7028ae9a38cb9998eb1d8d93a62d7326e5c5f7eb141d8cb8b658213d

  • SHA512

    eabe63849baf8d4ee46df03abfaf5f56ad4ec6d90b77c724d9281e4946b65db064d634bfa26346e46dab59bc3e176dfca2abc71d64b27e668f2438ee162d2240

  • SSDEEP

    98304:Wh6xV6zRhld9E1BlYb9uto2jgrGeweoSYp2prwvLWaNFXvow17IugzlHbGSZBN7k:S2V8ld98BlON2jnbNswvBXvowJgzl7Gb

Malware Config

Targets

    • Target

      d8e8f88c7028ae9a38cb9998eb1d8d93a62d7326e5c5f7eb141d8cb8b658213d

    • Size

      5.7MB

    • MD5

      bebd4982ccca9f7b4f9f40fe05ecdf65

    • SHA1

      d9643b6b074f6bc9099b1a0b9ef583cd1876daf9

    • SHA256

      d8e8f88c7028ae9a38cb9998eb1d8d93a62d7326e5c5f7eb141d8cb8b658213d

    • SHA512

      eabe63849baf8d4ee46df03abfaf5f56ad4ec6d90b77c724d9281e4946b65db064d634bfa26346e46dab59bc3e176dfca2abc71d64b27e668f2438ee162d2240

    • SSDEEP

      98304:Wh6xV6zRhld9E1BlYb9uto2jgrGeweoSYp2prwvLWaNFXvow17IugzlHbGSZBN7k:S2V8ld98BlON2jnbNswvBXvowJgzl7Gb

    • 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.

    • Loads dropped DLL

    • Obfuscated with Agile.Net obfuscator

      Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

    • 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

    • 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

3
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

2
T1082

Collection

Data from Local System

2
T1005

Tasks