TrojanDownloader:Win32/Thoper.B (file analysis)

The TrojanDownloader:Win32/Thoper.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 TrojanDownloader:Win32/Thoper.B virus can do?

The binary likely contains encrypted or compressed data.
Authenticode signature is invalid
Yara rule detections observed from a process memory dump/dropped files/CAPE

How to determine TrojanDownloader:Win32/Thoper.B?


File Info:
name: 2E605388C7897AA43F68.mlw
path: /opt/CAPEv2/storage/binaries/b54d5413508c02a45a56dc7db5f0362114721b0ca691b3ad4c3a7e854a9a2216
crc32: B3AB7702
md5: 2e605388c7897aa43f68b78a60657986
sha1: dc5a9763f0ef1823688b3feb5473fc8feaafcaf3
sha256: b54d5413508c02a45a56dc7db5f0362114721b0ca691b3ad4c3a7e854a9a2216
sha512: 75873b6daa46f71a04fef8e567087e5d51ca5ac24794886a52bcc0d40adcf7a0fe537668639fd1c3955ab3597815f79a417ac2d66b3e01067517d09cb7182f34
ssdeep: 3072:GmonEdSlpjbim2gWjBWhIr6YJVnxzIqMKB1hWZNmHo:G9di46r6enxzIqzB1vo
type: PE32 executable (GUI) Intel 80386, for MS Windows
tlsh: T105B38DD6A52CE278D5B16BFF5800337A74D98C348D52C982EFD88AD064F30B8676536B
sha3_384: 8ebaa77003b33fc8a44d61e25810bff07890d476f8cc8ed7e9e2d9acecbaecfe6f853384485ff14278c4adcd70025310
ep_bytes: 5356576a00e875ffffff5966357b550a
timestamp: 2010-08-25 12:01:43

Version Info:
0: [No Data]

TrojanDownloader:Win32/Thoper.B also known as:

Bkav	W32.AIDetectMalware
Lionic	Trojan.Win32.Inject.m!c
Elastic	malicious (high confidence)
MicroWorld-eScan	Gen:Heur.IPZ.6
FireEye	Generic.mg.2e605388c7897aa4
McAfee	Artemis!2E605388C789
Malwarebytes	Malware.AI.3984473869
VIPRE	Gen:Heur.IPZ.6
Sangfor	Suspicious.Win32.Save.a
CrowdStrike	win/malicious_confidence_100% (W)
Alibaba	Backdoor:Win32/Gulpix.1a8395f0
K7GW	Backdoor ( 003ed5c61 )
K7AntiVirus	Backdoor ( 003ed5c61 )
VirIT	Backdoor.Win32.Generic.AXJI
Symantec	ML.Attribute.HighConfidence
ESET-NOD32	a variant of Win32/Agent.RWV
APEX	Malicious
Cynet	Malicious (score: 100)
Kaspersky	Backdoor.Win32.Gulpix.ysr
BitDefender	Gen:Heur.IPZ.6
NANO-Antivirus	Virus.Win32.Gen.ccmw
Avast	Win32:Trojan-gen
Tencent	Win32.Backdoor.Gulpix.Dplw
Emsisoft	Gen:Heur.IPZ.6 (B)
F-Secure	Trojan.TR/Crypt.XPACK.Gen
DrWeb	Trojan.DownLoader7.2206
Zillya	Trojan.Agent.Win32.3653572
TrendMicro	TROJ_GEN.R002C0DHH23
McAfee-GW-Edition	BehavesLike.Win32.Generic.cc
Trapmine	malicious.high.ml.score
Sophos	ML/PE-A
SentinelOne	Static AI – Suspicious PE
GData	Gen:Heur.IPZ.6
Jiangmin	Backdoor/Inject.cni
Webroot	W32.Injector.Gen
Avira	TR/Crypt.XPACK.Gen
MAX	malware (ai score=100)
Antiy-AVL	Trojan[Backdoor]/Win32.Inject
Xcitium	Malware@#33t04d94hn13j
Arcabit	Trojan.IPZ.6
ViRobot	Backdoor.Win32.A.Inject.113152.D
ZoneAlarm	Backdoor.Win32.Gulpix.ysr
Microsoft	TrojanDownloader:Win32/Thoper.B
Google	Detected
BitDefenderTheta	AI:Packer.93F9DD3E1E
ALYac	Gen:Heur.IPZ.6
VBA32	BScope.Trojan-Dropper.Injector
Cylance	unsafe
Panda	Trj/CI.A
TrendMicro-HouseCall	TROJ_GEN.R002C0DHH23
Rising	Trojan.Generic@AI.96 (RDML:eH0AnJ84w+ldjpVwqaM4dQ)
Yandex	Trojan.GenAsa!4CV13xOG8pQ
Ikarus	Worm.Win32.Conficker
MaxSecure	Trojan.Malware.1636128.susgen
Fortinet	W32/Agent.RWV!tr
AVG	Win32:Trojan-gen
Cybereason	malicious.3f0ef1
DeepInstinct	MALICIOUS

How to remove TrojanDownloader:Win32/Thoper.B?

TrojanDownloader:Win32/Thoper.B 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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