General

  • Target

    setup (2020_09_08 06_33_12 UTC).exe

  • Size

    3MB

  • Sample

    230907-v116xacc51

  • MD5

    2701293da5a43c76b05e7f5adf04feea

  • SHA1

    3cc73d2630aff662173fe2a95486024e4a3e31d2

  • SHA256

    ec3c6fa4ca0a5656cbda79b47b6aabc999f185f001c5f8d9fc324dc1cda2e4f4

  • SHA512

    7560590b27bfd561902df430070fa90687875bacd462627b700ed3ebb6cf839bebb6af10bd852c756db301e9a02108b08e5dc889f21513a319b9268eb5edd9d4

  • SSDEEP

    98304:lFAWmw2Qmxczz0yi+kWT1Z4METooUcBWd+1+PIIhz:lCR3xm0s5TeUzd+kwIhz

Malware Config

Extracted

Family

cryptbot

C2

tuytee13.top

moriiikk07.top

Targets

    • Target

      Device/HarddiskVolume9/Kumaya/D/FileHistory/SreejithK@VIRTUSHOLDING.COM/LTP-566/Data/C/Users/SreejithKumaya/Desktop/New folder (3)/setup (2020_09_08 06_33_12 UTC).exe

    • Size

      3MB

    • MD5

      0afb947cb776933653e23d970a3d8d14

    • SHA1

      c8ab072395450ae11a6abf5323922d74c180d24a

    • SHA256

      ad08c7d20f5342efc20b4460ad66b0961a423804915012ab2969efe25e1288b5

    • SHA512

      ae031402db52a167e6754bf9c04b3f810ad0e2e1202349141f878dc89de6ad1fbfb586d1ef8aee3ca79efa70539dc18ec2da7ca74e3255c01e9956f57d987dc0

    • SSDEEP

      98304:zdh4mx3ywXIaszDU5j5eXOUvlDYL5JZNKdSC7ZUY6NsOoWNCCy9R:zP4s3hXIan5e+UNiuF7INNoWdyn

    • CryptBot

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

    • CryptBot payload

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

    • Blocklisted process makes network request

    • 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.

    • Executes dropped EXE

    • Identifies Wine through registry keys

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

    • Loads dropped DLL

    • Reads user/profile data of web browsers

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

    • 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.

    • Legitimate hosting services abused for malware hosting/C2

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Matrix ATT&CK v13

Defense Evasion

Virtualization/Sandbox Evasion

2
T1497

Credential Access

Unsecured Credentials

2
T1552

Credentials In Files

2
T1552.001

Discovery

Query Registry

6
T1012

Virtualization/Sandbox Evasion

2
T1497

System Information Discovery

4
T1082

Collection

Data from Local System

2
T1005

Command and Control

Web Service

1
T1102

Tasks