Categories: SpyTrojan

What is “Trojan-Spy.Win32.Stealer.apuf”?

The Trojan-Spy.Win32.Stealer.apuf 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 Trojan-Spy.Win32.Stealer.apuf virus can do?

  • Behavioural detection: Executable code extraction – unpacking
  • Yara rule detections observed from a process memory dump/dropped files/CAPE
  • Presents an Authenticode digital signature
  • Creates RWX memory
  • NtSetInformationThread: attempt to hide thread from debugger
  • Dynamic (imported) function loading detected
  • Enumerates running processes
  • Expresses interest in specific running processes
  • Reads data out of its own binary image
  • CAPE extracted potentially suspicious content
  • The binary contains an unknown PE section name indicative of packing
  • The binary likely contains encrypted or compressed data.
  • Authenticode signature is invalid
  • Detects Sandboxie through the presence of a library
  • Queries information on disks, possibly for anti-virtualization
  • Checks for the presence of known windows from debuggers and forensic tools
  • CAPE detected the RedLine malware family
  • Checks for the presence of known devices from debuggers and forensic tools
  • Detects VirtualBox through the presence of a device
  • Anomalous binary characteristics
  • Binary compilation timestomping detected

How to determine Trojan-Spy.Win32.Stealer.apuf?


File Info:

name: 91FFC79763232828AB1B.mlwpath: /opt/CAPEv2/storage/binaries/0dce668ad51da4de96cd40c5419c0f4a9c1a5b3050ea529cf81ff64c49e21a22crc32: 3186E672md5: 91ffc79763232828ab1bcd72ce1ddc22sha1: e64c484b04b4f0db0c3f1ff845e16e2f2e9174e8sha256: 0dce668ad51da4de96cd40c5419c0f4a9c1a5b3050ea529cf81ff64c49e21a22sha512: c52f04eef0dbb2a3715abdbe97a9f89cc1a0bc4f2ba2dc1ec166c323add2a71969cf5cb42898c98d8dd7746cdc8e708e04ee9575f55d05b5908536486928bb5fssdeep: 24576:Qt8df9Ng9BYAdenGyEJQ0zdYRCKUNYpA2CusebVjI6HzTHmy/rEEksuv7hz91vKD:Qt8df9Ng9BYAdenGyEJQ0zdYRCKUNYpltype: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T18A35BDD6220D4FB4D7B0897FB65884713FB0421CE9E5864620F0FEA3A6DB029E75991Fsha3_384: f610214fbcdec901e2f64abbcc6346a3242b427c2289a455668e918b7db15c7f41380639d97e908d0bb4c452ab379323ep_bytes: eb0567be67ca4050eb05d1f64dc55be8timestamp: 2050-08-26 03:45:36

Version Info:

CompanyName: Piriform Software LtdFileDescription: CCleaner InstallerFileVersion: 5.87.0.9306LegalCopyright: Copyright © 2005-2021 Piriform Software LtdProductName: CCleanerTranslation: 0x0000 0x04b0

Trojan-Spy.Win32.Stealer.apuf also known as:

Lionic Trojan.Win32.Stealer.l!c
DrWeb Trojan.PWS.Steam.23436
MicroWorld-eScan Trojan.GenericKD.38256124
FireEye Generic.mg.91ffc79763232828
McAfee Artemis!91FFC7976323
Cylance Unsafe
K7AntiVirus Riskware ( 0040eff71 )
Alibaba TrojanSpy:Win32/Stealer.cf899a49
K7GW Riskware ( 0040eff71 )
CrowdStrike win/malicious_confidence_60% (W)
BitDefenderTheta Gen:NN.ZexaF.34084.cr3@a0Fd!0hi
Symantec ML.Attribute.HighConfidence
ESET-NOD32 a variant of Win32/Packed.Obsidium.CW
TrendMicro-HouseCall TrojanSpy.Win32.REDLINESTEALER.X
Paloalto generic.ml
Kaspersky Trojan-Spy.Win32.Stealer.apuf
BitDefender Trojan.GenericKD.38256124
Avast Win32:Trojan-gen
Tencent Win32.Trojan.Falsesign.Hupr
Ad-Aware Trojan.GenericKD.38256124
Sophos Mal/Generic-S
Comodo .UnclassifiedMalware@0
TrendMicro TrojanSpy.Win32.REDLINESTEALER.X
McAfee-GW-Edition Artemis!Trojan
Emsisoft Trojan.GenericKD.38256124 (B)
Ikarus Trojan.SuspectCRC
GData Win32.Trojan-Stealer.CredStealer.6MRBJ4
Jiangmin TrojanSpy.Stealer.kkq
MAX malware (ai score=100)
Kingsoft Win32.Troj.Stealer.ap.(kcloud)
Gridinsoft Ransom.Win32.Sabsik.sa
ViRobot Trojan.Win32.Z.Stealer.1087664
Microsoft Trojan:Win32/Sabsik.FL.B!ml
Cynet Malicious (score: 100)
Acronis suspicious
VBA32 BScope.Backdoor.MSIL.Noancooe
ALYac Trojan.GenericKD.38256124
Malwarebytes Spyware.PasswordStealer
APEX Malicious
Rising Trojan.Generic@ML.85 (RDMK:RZZQnHoDnk6VCxRbTlCS8g)
Yandex TrojanSpy.Stealer!9NXsOWoTXJs
Fortinet W32/PossibleThreat
AVG Win32:Trojan-gen
Cybereason malicious.b04b4f
Panda Trj/CI.A

How to remove Trojan-Spy.Win32.Stealer.apuf?

  • 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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