Categories: Malware

Win32/Kryptik.ASFO removal instruction

The Win32/Kryptik.ASFO 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 Win32/Kryptik.ASFO virus can do?

  • Behavioural detection: Executable code extraction – unpacking
  • SetUnhandledExceptionFilter detected (possible anti-debug)
  • Yara rule detections observed from a process memory dump/dropped files/CAPE
  • Creates RWX memory
  • Attempts to connect to a dead IP:Port (6 unique times)
  • Dynamic (imported) function loading detected
  • Starts servers listening on 127.0.0.1:0
  • CAPE extracted potentially suspicious content
  • Unconventionial language used in binary resources: Norwegian (Bokmal)
  • The binary likely contains encrypted or compressed data.
  • Authenticode signature is invalid
  • Exhibits behavior characteristic of Kelihos malware
  • Installs itself for autorun at Windows startup
  • Collects information about installed applications
  • Attempts to access Bitcoin/ALTCoin wallets
  • Harvests credentials from local FTP client softwares
  • Installs WinPCAP

How to determine Win32/Kryptik.ASFO?


File Info:

name: 7441B932F581CDB7CDB4.mlwpath: /opt/CAPEv2/storage/binaries/ddff6ef7b04398eeea735fff1e7e483f7348b5bd7ff3f6f9e8689544cb10cd15crc32: 49D735E1md5: 7441b932f581cdb7cdb40977770bd0d9sha1: 0169547b11a74f9034353246cc784c9c2ec69ce2sha256: ddff6ef7b04398eeea735fff1e7e483f7348b5bd7ff3f6f9e8689544cb10cd15sha512: 49c12f2ff976aff4398935292fa170e372b8dd12bd973bb40577d43fb3889df972f0625bb56f70c686d01f30cfa02476438fc11d4cc7650e7f5fd133dffed003ssdeep: 24576:Kot0djx+5f7vcGO68AQuV4LZRsSBGs+0UA:3t0+f7JO68AL4LZRsSMlAtype: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T1F40523CE9335A85AE4D88FB010B77E17C4EE79D55A0786EC439623E1B8C6631AC19D3Csha3_384: 748eb6ed63217f0737bea1d857df2c95641f6cc93fa2a3d17ca8bbe60ed7c1f82010642073aa9e3c8ef64f03466c6f34ep_bytes: 558bec83ec708b15d45e46008955d053timestamp: 2012-07-31 12:32:11

Version Info:

CompanyName: sDCrQFaksYFileDescription: e13DFileVersion: 98.15.58131.61510InternalName: NhycdcmZw7C6OriginalFilename: MyobGZdTDNProductName: VioWnProductVersion: 60.241.11629.57318Translation: 0x0409 0x04b0

Win32/Kryptik.ASFO also known as:

Bkav W32.AIDetect.malware2
Lionic Trojan.Win32.Generic.4!c
MicroWorld-eScan Gen:Variant.Razy.29555
FireEye Generic.mg.7441b932f581cdb7
ALYac Gen:Variant.Razy.29555
Cylance Unsafe
VIPRE Trojan.Win32.Kryptik.xuw (v)
Sangfor Trojan.Win32.Generic.ky
K7AntiVirus Trojan ( 005329161 )
Alibaba Trojan:Win32/Starter.ali2000005
K7GW Trojan ( 005329161 )
Cybereason malicious.2f581c
BitDefenderTheta Gen:NN.ZexaF.34212.Zu0@aK6ZkNdG
Cyren W32/Kazy.T.gen!Eldorado
Symantec W32.Waledac.D!gen4
ESET-NOD32 a variant of Win32/Kryptik.ASFO
APEX Malicious
Paloalto generic.ml
Kaspersky HEUR:Trojan.Win32.Generic
BitDefender Gen:Variant.Razy.29555
NANO-Antivirus Trojan.Win32.Packed.crlfro
Avast Win32:Mystic
Tencent Win32.Trojan.Crypt.bsar
Ad-Aware Gen:Variant.Razy.29555
Sophos Mal/EncPk-ANM
Comodo TrojWare.Win32.Kryptik.AWIA@4uzb0d
DrWeb Trojan.Packed.2735
TrendMicro TROJ_GEN.R002C0CB722
McAfee-GW-Edition BehavesLike.Win32.Trojan.cc
Emsisoft Gen:Variant.Razy.29555 (B)
SentinelOne Static AI – Malicious PE
GData Gen:Variant.Razy.29555
Avira TR/Crypt.XPACK.Gen
Gridinsoft Ransom.Win32.Wacatac.sa
ViRobot Trojan.Win32.Z.Kryptik.845824.EQ
ZoneAlarm HEUR:Trojan.Win32.Generic
Microsoft Backdoor:Win32/Kelihos.F
Cynet Malicious (score: 99)
AhnLab-V3 Win-Trojan/Malpacked6.Gen
Acronis suspicious
McAfee Generic BackDoor.afz
MAX malware (ai score=82)
VBA32 OScope.Trojan.Hlux.01733
Malwarebytes MachineLearning/Anomalous.100%
TrendMicro-HouseCall TROJ_GEN.R002C0CB722
Rising Trojan.Kryptik!1.ABDA (CLOUD)
Ikarus Trojan-PWS.Win32.Tepfer
Fortinet W32/Kryptik.XUW!tr
AVG Win32:Mystic
Panda Generic Malware
CrowdStrike win/malicious_confidence_90% (W)

How to remove Win32/Kryptik.ASFO?

  • 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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