Trojan.Guildma (file analysis)

The Trojan.Guildma 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.

What Trojan.Guildma virus can do?

• Sample contains Overlay data
• Performs HTTP requests potentially not found in PCAP.
• Reads data out of its own binary image
• Drops a binary and executes it
• The binary contains an unknown PE section name indicative of packing
• The binary likely contains encrypted or compressed data.
• Executable file is packed/obfuscated with MPRESS
• Authenticode signature is invalid
• Attempts to repeatedly call a single API many times in order to delay analysis time
• Attempts to modify proxy settings
• Yara rule detections observed from a process memory dump/dropped files/CAPE

How to determine Trojan.Guildma?

File Info:
name: F009A0DC256B95B3A5D0.mlwpath: /opt/CAPEv2/storage/binaries/ed47cdc15bc7c0956994868c2839f96251e2963c1e4a5fbaec4f28562e8ededccrc32: 61DF319Bmd5: f009a0dc256b95b3a5d0e402fda0b2bcsha1: a1fb2ffa0d51c8c9943f2caa60f3451011777dd0sha256: ed47cdc15bc7c0956994868c2839f96251e2963c1e4a5fbaec4f28562e8ededcsha512: a74c8b1d00f8839efa10907522cdb0191d292cb29a078f71fb922e5c41cebd14409ce63646262767fdff84c1079a0113b095637d0028751cc500891cd082f959ssdeep: 192:xZCYprcVMuYDGilPzqNepnI1vx00h1DDB88I/91DDYv48iYY14H2OuDe4+0WpXAr:xoYprc6hP2zvx/PAo2Ye4Hr4+NlENtype: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T179C203742BE55A76F37FCEB686F542C5A534B4227C06D90C409A87880823FA5DDB1E1Fsha3_384: dbfda1b0372692762dd363a4a852f28c7c2f56805177dd840ad19c5eadbbdc40a98577a90ba7a9a5e3287638253f6fdbep_bytes: 60e80000000058059f0200008b3003f0timestamp: 2013-09-09 15:31:47
Version Info:
0: [No Data]

Trojan.Guildma also known as:

How to remove Trojan.Guildma?

• 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.