Categories: Trojan

What is “TrojanDownloader:Win32/Delf.LZZ”?

The TrojanDownloader:Win32/Delf.LZZ 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.

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What TrojanDownloader:Win32/Delf.LZZ virus can do?

  • Sample contains Overlay data
  • Performs HTTP requests potentially not found in PCAP.
  • Reads data out of its own binary image
  • Unconventionial binary language: Chinese (Simplified)
  • Unconventionial language used in binary resources: Chinese (Simplified)
  • The binary contains an unknown PE section name indicative of packing
  • Executable file is packed/obfuscated with ASPack
  • The binary likely contains encrypted or compressed data.
  • Authenticode signature is invalid
  • Attempts to modify proxy settings
  • Anomalous binary characteristics
  • Yara rule detections observed from a process memory dump/dropped files/CAPE

How to determine TrojanDownloader:Win32/Delf.LZZ?


File Info:

name: 13984A5105F5CD0F216D.mlwpath: /opt/CAPEv2/storage/binaries/1a67f9e96297c3491caf5687ddddedd424a78ab52f8d94c079a9747c3ea3e9d1crc32: 76775365md5: 13984a5105f5cd0f216dfa8384710a78sha1: 5d7c4a0e90ce86ad65d47ab5537a4ad70f766382sha256: 1a67f9e96297c3491caf5687ddddedd424a78ab52f8d94c079a9747c3ea3e9d1sha512: af54a4ee52e6376b9501bcefd39a126a8b5817e101bc1c208ad62ace53c68852b0c52762158680339132813f447eebe24a7e96fd57de149fbf9bfe4b588c0c6fssdeep: 6144:TBKHYmz6mq2pmHmFV2YjnWuwqzeRhvaw4T:04m5bpnL2KnEqCRhvaTtype: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T12F54233B6AD74CE1D78D0A3921604D1D833E5D4CB504C79722237DAE5AB0F6E95092BEsha3_384: c3acd67d8305fdd54d314e5f9adde61f478c4cf8c78ccbb7bdbfa1a1818e2d57d21c2f6957ea29d0885056b5bf481ab7ep_bytes: 60e803000000e9eb045d4555c3e80100timestamp: 2011-01-25 07:31:10

Version Info:

CompanyName: FileDescription: 281600FileVersion: 1.0.0.0InternalName: LegalCopyright: LegalTrademarks: OriginalFilename: ProductName: ProductVersion: 1.0.0.0Comments: Translation: 0x0804 0x03a8

TrojanDownloader:Win32/Delf.LZZ also known as:

Bkav W32.AIDetectMalware
Lionic Trojan.Win32.Delf.lQdB
Elastic malicious (high confidence)
MicroWorld-eScan Gen:Variant.Ursu.262536
FireEye Generic.mg.13984a5105f5cd0f
CAT-QuickHeal TrojanDownloader.Delf.NK12
Skyhigh BehavesLike.Win32.GenDownloader.dc
ALYac Gen:Variant.Ursu.262536
Malwarebytes Generic.Malware.AI.DDS
VIPRE Gen:Variant.Ursu.262536
Sangfor Suspicious.Win32.Save.ins
K7AntiVirus Trojan ( f1000a011 )
BitDefender Gen:Variant.Ursu.262536
K7GW Trojan ( f1000a011 )
Cybereason malicious.e90ce8
BitDefenderTheta Gen:NN.ZelphiF.36792.rW1baWd4Kddj
VirIT Trojan.Win32.Cryptic.CBE
Symantec Downloader
ESET-NOD32 Win32/TrojanDownloader.Delf.QEW
APEX Malicious
ClamAV Win.Packed.Delf-9786618-0
Kaspersky Trojan-Downloader.Win32.Delf.aznp
Alibaba TrojanDownloader:Win32/GenDownloader.78578e50
NANO-Antivirus Trojan.Win32.Delf.crlibp
ViRobot Trojan.Win32.A.Downloader.276472.A
Tencent Trojan.Win32.Downloader.tgv
Sophos Mal/DelpDwnld-B
Baidu Win32.Trojan-Downloader.Agent.af
F-Secure Trojan.TR/Dldr.Delphi.Gen
DrWeb Trojan.DownLoader4.5793
Zillya Downloader.Delf.Win32.18627
TrendMicro TROJ_DLOADR.SMAI
Trapmine malicious.high.ml.score
Emsisoft Gen:Variant.Ursu.262536 (B)
SentinelOne Static AI – Suspicious PE
GData Gen:Variant.Ursu.262536
Jiangmin TrojanDownloader.Delf.aaad
Webroot W32.Delf.Gen
Google Detected
Avira TR/Dldr.Delphi.Gen
Varist W32/Delf.AI.gen!Eldorado
Antiy-AVL Trojan[Downloader]/Win32.Delf
Kingsoft Win32.Troj.Undef.a
Xcitium TrojWare.Win32.Downloader.Fraudload.AA@2vwxs7
Arcabit Trojan.Ursu.D40188
SUPERAntiSpyware Trojan.Agent/Gen-Delf
ZoneAlarm Trojan-Downloader.Win32.Delf.aznp
Microsoft TrojanDownloader:Win32/Delf.LZZ
Cynet Malicious (score: 100)
AhnLab-V3 Downloader/Win32.Delf.R3483
VBA32 TrojanDownloader.Delf
DeepInstinct MALICIOUS
Cylance unsafe
Panda Trj/Genetic.gen
TrendMicro-HouseCall TROJ_DLOADR.SMAI
Rising Trojan.DL.Win32.Undef.sua (CLOUD)
Yandex Trojan.GenAsa!dETtiKvSjKU
Ikarus Trojan-Dropper.Delf
MaxSecure Trojan.Delf.AZNP
Fortinet W32/Delf.QEW!tr.dldr
AVG Win32:Evo-gen [Trj]
Avast Win32:Evo-gen [Trj]
CrowdStrike win/malicious_confidence_100% (D)

How to remove TrojanDownloader:Win32/Delf.LZZ?

  • 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.
Paul Valéry

I'm a cyber security analyst and data science expert with 5+ years of experience with security software contractors.

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