General

  • Target

    99b6ee52d0dc5a07bff09373a8dda2fe

  • Size

    2.7MB

  • Sample

    211229-y8ffysfcb4

  • MD5

    99b6ee52d0dc5a07bff09373a8dda2fe

  • SHA1

    616c52af96614c86623829b604b0eda3cf29af28

  • SHA256

    7b3296a5492a8b01ab3bb33164a1bb269630b396d6dd8234accce8e4c4d84067

  • SHA512

    338babef8e40c74ab6957b226e90457d9a0db9f4007235a2df699d4ba6797f571c957b743c1324acad579fd50fd128af47550e5680f92fa7ce276f5cc9d3c12e

Malware Config

Extracted

Family

cryptbot

C2

hevahu32.top

morypd03.top

Attributes
  • payload_url

    http://kyrpbr04.top/download.php?file=orrery.exe

Targets

    • Target

      99b6ee52d0dc5a07bff09373a8dda2fe

    • Size

      2.7MB

    • MD5

      99b6ee52d0dc5a07bff09373a8dda2fe

    • SHA1

      616c52af96614c86623829b604b0eda3cf29af28

    • SHA256

      7b3296a5492a8b01ab3bb33164a1bb269630b396d6dd8234accce8e4c4d84067

    • SHA512

      338babef8e40c74ab6957b226e90457d9a0db9f4007235a2df699d4ba6797f571c957b743c1324acad579fd50fd128af47550e5680f92fa7ce276f5cc9d3c12e

    • CryptBot

      A C++ stealer distributed widely in bundle with other software.

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

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Checks BIOS information in registry

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

    • Deletes itself

    • 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

4
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

4
T1082

Collection

Data from Local System

2
T1005

Tasks