Categories: Malware

Refroso.2 (B) (file analysis)

The Refroso.2 (B) 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 Refroso.2 (B) virus can do?

  • Behavioural detection: Executable code extraction – unpacking
  • Sample contains Overlay data
  • Yara rule detections observed from a process memory dump/dropped files/CAPE
  • 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
  • Behavioural detection: Injection (Process Hollowing)
  • Behavioural detection: Injection (inter-process)
  • Attempts to interact with an Alternate Data Stream (ADS)
  • Anomalous binary characteristics

How to determine Refroso.2 (B)?


File Info:

name: 16DB0F6D593A04CC69AB.mlwpath: /opt/CAPEv2/storage/binaries/d1b1c52daf7f14686d18d557b393d35485ec69cb40327d07e54bd8173cb0b781crc32: CEB07725md5: 16db0f6d593a04cc69abd9abc448ff2esha1: 05466f5bb41d8dd3b2a4c88e7017110ea4ef901csha256: d1b1c52daf7f14686d18d557b393d35485ec69cb40327d07e54bd8173cb0b781sha512: b2bc30c6d98c96a02d6a99fc25a1d839f3e773b1b03baae8de3827d5aa3fd8e1313dfd2969cbd10c4e708bf77d0c2e1666b3004cde57c64aab9d9286098bfa8bssdeep: 6144:Mr5lkotkGh1DlJsM5BQxhqc8/csmXK5KJCCL1Q:05WotkGh15JsMnLcMG6VG1Qtype: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T1B624121AAA3196DADACBE476407505813C726DFC22ABCFD7EB835118366CC0D06F5B1Esha3_384: e44e4ea10b7a33bf07d37e7db82218030fabf4889376384c896c87de6d9a2eac399d4347f23ec09db2757716a6dfbd19ep_bytes: 6a286870204000e87402000033ff57fftimestamp: 2010-04-28 19:52:34

Version Info:

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

Refroso.2 (B) also known as:

Lionic Trojan.Win32.Refroso.muCm
Elastic malicious (high confidence)
MicroWorld-eScan Gen:Variant.Refroso.2
FireEye Generic.mg.16db0f6d593a04cc
CAT-QuickHeal VirTool.DelfInject.AF
ALYac Gen:Variant.Refroso.2
Cylance Unsafe
VIPRE Gen:Variant.Refroso.2
Sangfor Suspicious.Win32.Save.a
K7AntiVirus Trojan ( 001788e91 )
BitDefender Gen:Variant.Refroso.2
K7GW Trojan ( 001788e91 )
Cybereason malicious.d593a0
VirIT Trojan.Win32.Agent.CGC
Cyren W32/VBInject.V.gen!Eldorado
Symantec Backdoor.Bifrose!gen
tehtris Generic.Malware
ESET-NOD32 Win32/Bifrose.NTA
Cynet Malicious (score: 100)
APEX Malicious
ClamAV Win.Trojan.Agent-36155
Kaspersky Trojan.Win32.VBKrypt.uuvz
Alibaba Trojan:Win32/VBKrypt.00c053b4
NANO-Antivirus Trojan.Win32.VB.tdhad
Rising Trojan.Occamy!8.F1CD (TFE:5:c1ALqTeYTND)
Ad-Aware Gen:Variant.Refroso.2
Emsisoft Gen:Variant.Refroso.2 (B)
Comodo TrojWare.Win32.Buzus.nhww@4lzqc5
DrWeb BackDoor.IRC.Sdbot.3840
Zillya Trojan.Buzus.Win32.44029
TrendMicro TROJ_BREDLAB.SMD
McAfee-GW-Edition BehavesLike.Win32.VirRansom.dc
Trapmine malicious.high.ml.score
Sophos ML/PE-A + Mal/BigMole-B
Ikarus Packed.Win32.Klone
Jiangmin Trojan/Buzus.agjk
Webroot W32.Bifrose.Gen
Avira TR/Crypt.CFI.Gen
MAX malware (ai score=99)
Antiy-AVL Trojan/Generic.ASBOL.C615
Microsoft Backdoor:Win32/Bifrose.AE
ZoneAlarm Trojan.Win32.VBKrypt.uuvz
GData Gen:Variant.Refroso.2
Google Detected
AhnLab-V3 Trojan/Win32.Bifrose.R1707
McAfee Bredolab.gen.u
VBA32 BScope.Trojan.Inject
Malwarebytes Trojan.MalPack.Generic
Panda Generic Malware
TrendMicro-HouseCall TROJ_BREDLAB.SMD
Tencent Malware.Win32.Gencirc.114c1bf0
Yandex Trojan.GenAsa!XMiXPNBz8gY
SentinelOne Static AI – Malicious PE
MaxSecure Packed.Rebhip.a
Fortinet W32/Refroso.BKBI!tr
BitDefenderTheta AI:Packer.287F14EB1E
AVG Win32:Evo-gen [Trj]
Avast Win32:Evo-gen [Trj]
CrowdStrike win/malicious_confidence_100% (W)

How to remove Refroso.2 (B)?

  • 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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