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About “Win32/Spy.Grandoreiro.CB” infection

Published Apr 28, 2024 Spy category 3 min read
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What to verify before removal

About “Win32/Spy.Grandoreiro.CB” infection deserves a credential-safety review because this spy label can overlap with remote access, browser data theft, or persistence after reboot. Cleanup should include scanning the file, removing the persistence point, and rotating exposed passwords from a clean device.

Start by comparing the local file name with 136E03F55F291335CDD5.mlw, then review the behavior notes for credential theft, browser data access, remote-control activity, and persistence after reboot. This helps separate a matching detection from a different file that only shares a similar alert name.

Observed file
136E03F55F291335CDD5.mlw
  • Compare the suspicious file name with 136E03F55F291335CDD5.mlw.
  • Confirm the detection name matches About “Win32/Spy.Grandoreiro.CB” infection before removing related files.
  • Review the report for credential theft, browser data access, remote-control activity, and persistence after reboot so the cleanup is based on observed behavior, not only the label.
  • After cleanup, rotate passwords from a clean device and review browser sessions or saved credentials.

The Win32/Spy.Grandoreiro.CB 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.

What Win32/Spy.Grandoreiro.CB virus can do?

  • The binary contains an unknown PE section name indicative of packing
  • Authenticode signature is invalid

How to determine Win32/Spy.Grandoreiro.CB?



File Info:

name: 136E03F55F291335CDD5.mlw
path: /opt/CAPEv2/storage/binaries/f8bbc11ab50e59dc92c73f5ceb7355ef9bfea64f1c80c5a58ec90833f7b2c26c
crc32: 441DF3A7
md5: 136e03f55f291335cdd581f11b13e467
sha1: bdbed005084bf746e16df1b6bd3b2db374ab3c4b
sha256: f8bbc11ab50e59dc92c73f5ceb7355ef9bfea64f1c80c5a58ec90833f7b2c26c
sha512: a26d6729571336e89be3d3144bed4d538ddd04a3cb558e135b7e2f980203027cb397e0f81bd86dc0c77e1232a8e3f21dfcb69ce0acead453e8b21e8924a38212
ssdeep: 49152:8pO6RHlCdrndI4jJip/nSks/W4S6spjVKzM2dVc2Ln2t:wO6RHlGr4DIspVKzTet
type: PE32 executable (DLL) (GUI) Intel 80386, for MS Windows
tlsh: T1E4F57D23B344653EC05B1A3A5967D328993BF77126268C5B67F40CCC8F399823E3A657
sha3_384: a6781ecbe6886a3c244e1785c79f381dc51dbaa7b2e501e436bffa070be97e9286a1785a484fd372bca35ad05061321f
ep_bytes: 558bec83c4c0b8fc236900e8b825d7ff
timestamp: 2023-12-20 14:39:57


Version Info:

0: [No Data]

Win32/Spy.Grandoreiro.CB also known as:

Bkav W32.Common.4A6FA775
Lionic Trojan.Win32.Grandoreiro.7!c
AVG Win32:SpywareX-gen [Trj]
MicroWorld-eScan Gen:Variant.Barys.412050
FireEye Gen:Variant.Barys.412050
Skyhigh BehavesLike.Win32.BadFile.wh
McAfee GenericRXAA-AA!136E03F55F29
Zillya Trojan.Grandoreiro.Win32.2764
Sangfor Spyware.Win32.Grandoreiro.Vzfv
K7AntiVirus Spyware ( 005a3d9b1 )
Alibaba TrojanBanker:Win32/Grandoreiro.feaecb18
K7GW Spyware ( 005a3d9b1 )
Symantec ML.Attribute.HighConfidence
Elastic malicious (high confidence)
ESET-NOD32 a variant of Win32/Spy.Grandoreiro.CB
Cynet Malicious (score: 100)
Paloalto generic.ml
Kaspersky HEUR:Trojan-Banker.Win32.Grandoreiro.gen
BitDefender Gen:Variant.Barys.412050
Avast Win32:SpywareX-gen [Trj]
Tencent Malware.Win32.Gencirc.13faa278
Emsisoft Gen:Variant.Barys.412050 (B)
F-Secure Heuristic.HEUR/AGEN.1364204
VIPRE Gen:Variant.Barys.412050
TrendMicro TROJ_GEN.R002C0XLM23
Sophos Mal/Generic-S
Webroot W32.Infostealer.Gen
Varist W32/ABSpyware.BRSS-8077
Avira HEUR/AGEN.1364204
MAX malware (ai score=81)
Antiy-AVL Trojan[Spy]/Win32.Grandoreiro
Kingsoft Win32.Trojan-Banker.Grandoreiro.gen
Microsoft Trojan:Win32/Malgent!MSR
Xcitium Malware@#2ueanrof4l7sl
Arcabit Trojan.Barys.D64992
ViRobot Trojan.Win.Z.Grandoreiro.3425280
ZoneAlarm UDS:Trojan-Banker.Win32.Grandoreiro.gen
GData Gen:Variant.Barys.412050
Google Detected
AhnLab-V3 Trojan/Win.Generic.C5464208
VBA32 TScope.Trojan.Delf
ALYac Gen:Variant.Barys.412050
Cylance unsafe
Panda Trj/Chgt.AD
TrendMicro-HouseCall TROJ_GEN.R002C0XLM23
Rising Spyware.Grandoreiro!8.F2CC (TFE:6:tzrc7MyXliU)
Ikarus Trojan-Spy.Win32.Grandoreiro
MaxSecure Trojan.Malware.102062852.susgen
Fortinet W32/Grandoreiro.CB!tr.spy
DeepInstinct MALICIOUS
alibabacloud Trojan[stealer]:Win/Grandoreiro.CB

How to remove Win32/Spy.Grandoreiro.CB?

Recommended second-opinion scan

Verify the infection before changing system settings

Use GridinSoft Anti-Malware to run a full scan, review detected persistence entries, and quarantine confirmed threats before restarting Windows.

Download GridinSoft Anti-Malware
  • 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.