Malware

Refroso.2 removal guide

Malware Removal

The Refroso.2 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

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.
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What Refroso.2 virus can do?

  • Behavioural detection: Executable code extraction – unpacking
  • At least one process apparently crashed during execution
  • Sample contains Overlay data
  • Yara rule detections observed from a process memory dump/dropped files/CAPE
  • Creates RWX memory
  • Dynamic (imported) function loading detected
  • 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
  • Tries to unhook or modify Windows functions monitored by Cuckoo
  • Attempts to interact with an Alternate Data Stream (ADS)
  • Anomalous binary characteristics

How to determine Refroso.2?


File Info:

name: 225DFF649EC2BB1D2392.mlw
path: /opt/CAPEv2/storage/binaries/6ee6fc9b0ac73de9c684d7aa4f0114af80e178782518da0c293e372ba96ddb2f
crc32: 14466CB6
md5: 225dff649ec2bb1d239212670ff75bad
sha1: 09eb21285e8e8850045545b1436f8fa0abbf14df
sha256: 6ee6fc9b0ac73de9c684d7aa4f0114af80e178782518da0c293e372ba96ddb2f
sha512: 5cf6ee431f27c01f1f8f96be9d866ec94b783a6b90d4819ab01d09c080cd5d6cd566bd338c76a6d74fec907637a956fe72b83abad3f8ad524f20dea53190540f
ssdeep: 3072:vmo+x12GHOh/KFOaIIWtO/uPd5YiGlgJQzOLcoFRGz/+Kdrp9kchm/GZT:uo+RHOJS3j4O/250R6YoFuGKX7N
type: PE32 executable (GUI) Intel 80386, for MS Windows
tlsh: T1833412CF1BCB712AF09E1876A5D786646FF2090CED9CF9538A5B03FD1128AA45CD660C
sha3_384: 2b74f5d9e0a54460fbc69ecbd8b48f2e5a660357fab586e232f21c14eb5cbe7735275abf1e814559ecff5c07850a5416
ep_bytes: 6a286870204000e87402000033ff57ff
timestamp: 2009-04-11 07:44:47

Version Info:

FileDescription: Protected Application
FileVersion: 1, 0, 0, 1
ProductVersion: 1, 0, 0, 1
Comments: Is protected with Teggo MoleBox 4.2321
Translation: 0x0000 0x04b0

Refroso.2 also known as:

BkavW32.AIDetect.malware2
LionicTrojan.Win32.Bifrose.lj8w
tehtrisGeneric.Malware
DrWebBackDoor.Poison.12251
MicroWorld-eScanGen:Variant.Refroso.2
FireEyeGeneric.mg.225dff649ec2bb1d
CAT-QuickHealVirTool.DelfInject.AF
ALYacGen:Variant.Refroso.2
CylanceUnsafe
VIPREGen:Variant.Refroso.2
SangforSuspicious.Win32.Save.a
K7AntiVirusTrojan ( 001788e91 )
AlibabaBackdoor:Win32/IRCBot.a64c776a
K7GWTrojan ( 001788e91 )
Cybereasonmalicious.49ec2b
BitDefenderThetaAI:Packer.DC5DED0B1E
CyrenW32/VBInject.V.gen!Eldorado
SymantecBackdoor.Bifrose!gen
Elasticmalicious (high confidence)
ESET-NOD32a variant of Win32/Packed.MoleboxUltra suspicious
TrendMicro-HouseCallTROJ_BREDLAB.SMD
ClamAVWin.Trojan.Agent-36155
KasperskyBackdoor.Win32.IRCBot.irl
BitDefenderGen:Variant.Refroso.2
NANO-AntivirusTrojan.Win32.Midgare.hcfuc
SUPERAntiSpywareTrojan.Agent/Generic
AvastWin32:Injector-VT [Trj]
TencentWin32.Backdoor.Ircbot.Hoor
Ad-AwareGen:Variant.Refroso.2
SophosML/PE-A + Mal/BigMole-B
ComodoTrojWare.Win32.Buzus.ojmq@3tw83r
ZillyaBackdoor.IRCBot.Win32.12852
TrendMicroTROJ_BREDLAB.SMD
McAfee-GW-EditionArtemis!Trojan
SentinelOneStatic AI – Malicious PE
Trapminemalicious.high.ml.score
EmsisoftGen:Variant.Refroso.2 (B)
IkarusVirus.Win32.VBInject
GDataGen:Variant.Refroso.2
JiangminTrojanDropper.VB.abrf
AviraTR/Crypt.XPACK.Gen
Antiy-AVLTrojan/Generic.ASBOL.C615
ArcabitTrojan.Refroso.2
ViRobotBackdoor.Win32.A.IRCBot.235853
MicrosoftTrojan:Win32/Wacatac.B!ml
CynetMalicious (score: 100)
AhnLab-V3Trojan/Win32.Bifrose.R1707
Acronissuspicious
McAfeeArtemis!225DFF649EC2
VBA32BScope.Trojan.Inject
MalwarebytesTrojan.MalPack.Generic
APEXMalicious
RisingTrojan.Generic@AI.100 (RDML:Tu/2ZE6e71A/Ogs/v8KUzg)
YandexTrojan.GenAsa!XMiXPNBz8gY
MAXmalware (ai score=100)
FortinetW32/Refroso.BKBI!tr
AVGWin32:Injector-VT [Trj]
PandaGeneric Malware
CrowdStrikewin/malicious_confidence_100% (W)

How to remove Refroso.2?

Refroso.2 removal tool
  • 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.

About the author

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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