Dropper.91 malicious file

The Dropper.91 is considered dangerous by lots of security experts. When this infection is active, you may notice unwanted processes in Task Manager list. In this case, it is adviced to scan your computer with GridinSoft Anti-Malware.

Gridinsoft Anti-Malware

Removing PC viruses manually may take hours and may damage your PC in the process. We recommend using GridinSoft Anti-Malware for virus removal. Allows to complete scan and cure your PC during the trial period.

DOWNLOAD NOW

6-day free trial available.

What Dropper.91 virus can do?

• Behavioural detection: Executable code extraction – unpacking
• Yara rule detections observed from a process memory dump/dropped files/CAPE
• Creates RWX memory
• Anomalous file deletion behavior detected (10+)
• Dynamic (imported) function loading detected
• At least one IP Address, Domain, or File Name was found in a crypto call
• Enumerates running processes
• Expresses interest in specific running processes
• Reads data out of its own binary image
• CAPE extracted potentially suspicious content
• The binary likely contains encrypted or compressed data.
• Authenticode signature is invalid
• Code injection with CreateRemoteThread in a remote process
• Behavioural detection: Injection (inter-process)
• Behavioural detection: Injection with CreateRemoteThread in a remote process
• Tries to unhook or modify Windows functions monitored by Cuckoo
• Steals private information from local Internet browsers
• Collects and encrypts information about the computer likely to send to C2 server
• Attempts to modify browser security settings
• Harvests credentials from local FTP client softwares
• Clears web history

How to determine Dropper.91?

File Info:
name: 3D6DB37EE99B7298EF61.mlw
path: /opt/CAPEv2/storage/binaries/3f062071a4757d4122f7d9a263299b0dd76a251ff512e0fd0393419dab29d7bd
crc32: 71AC878A
md5: 3d6db37ee99b7298ef610f8a54bb86ea
sha1: 09ed30e07202a9648ce07d6ac99812e23cc47122
sha256: 3f062071a4757d4122f7d9a263299b0dd76a251ff512e0fd0393419dab29d7bd
sha512: 84659912a59e3c3135eddf7efd08b46de1c04151a9eae8b756cb06e6217b4a22d473d1d553c2fb554b54f8b473b96173ccdf1d1feeee083a8d1712c64137fab1
ssdeep: 1536:0lftjHK5nwkN5z+MZ6yOV6ke03qPxHV+TfY8LCZMTOSiWrrn6go0u9Saff097b+m:MFUwkNJV6NQzlZsTNaMT93nZ7anc92
type: PE32 executable (GUI) Intel 80386, for MS Windows
tlsh: T12DC3028AB683D1B6EE550570C5AB9EB51FCC6C8F070006C7748D6BEB6FB61856C236C2
sha3_384: 3ad872694396bcaec5e2cc4e0db32129c0f4ab1570f390ad07e51fe8bf037f7fbc3289fdcfed864cab52eba4c0592697
ep_bytes: 558bec6aff68d01c4100688047400064
timestamp: 2011-10-16 14:51:21

Version Info:
0: [No Data]

Dropper.91 also known as:

How to remove Dropper.91?

• Download and install GridinSoft Anti-Malware.
• Open GridinSoft Anti-Malware and perform a “Standard scan“.
• “Move to quarantine” all items.
• Open “Tools” tab – Press “Reset Browser Settings“.
• Select proper browser and options – Click “Reset”.
• Restart your computer.