Categories: Virus

Virus:Win32/Nabucur.A (file analysis)

The Virus:Win32/Nabucur.A 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 Virus:Win32/Nabucur.A virus can do?

  • Executable code extraction
  • Attempts to connect to a dead IP:Port (3 unique times)
  • Creates RWX memory
  • Detected script timer window indicative of sleep style evasion
  • Expresses interest in specific running processes
  • Repeatedly searches for a not-found process, may want to run with startbrowser=1 option
  • Reads data out of its own binary image
  • A process created a hidden window
  • Drops a binary and executes it
  • HTTP traffic contains suspicious features which may be indicative of malware related traffic
  • Performs some HTTP requests
  • The binary likely contains encrypted or compressed data.
  • A scripting utility was executed
  • Uses Windows utilities for basic functionality
  • Checks for the presence of known windows from debuggers and forensic tools
  • A process attempted to delay the analysis task by a long amount of time.
  • Installs itself for autorun at Windows startup
  • Creates a hidden or system file
  • Attempts to disable UAC
  • Generates some ICMP traffic
  • Anomalous binary characteristics
  • Attempts to modify Explorer settings to prevent file extensions from being displayed
  • Attempts to modify Explorer settings to prevent hidden files from being displayed
  • Uses suspicious command line tools or Windows utilities

How to determine Virus:Win32/Nabucur.A?


File Info:

crc32: B581D9F1md5: e5db392e58f21662881156c5e3aeb4c8name: E5DB392E58F21662881156C5E3AEB4C8.mlwsha1: 66191081ff51e8483f224335e23b29d753592669sha256: f4b11885a3056fc56efdedbc0dd71fae152368e4c2e96a3481c6dff21e9d75aasha512: 3b77b700276c939b68c78f23ea8ba9b2c36980706b1e7ece78d20cf4c83b374fd33f05e9c0aa06313245d9a0ad54253a5857eaa67d276ef7cdc2eefba4ba9012ssdeep: 12288:Rooinw2tnsmEIaxaqR/zU/ZgMUx8VqpcR:Rooi5tnNzaLU/ieRtype: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Virus:Win32/Nabucur.A also known as:

Bkav W32.AIDetectVM.malware1
Elastic malicious (high confidence)
DrWeb Win32.VirLock.10
MicroWorld-eScan Win32.Virlock.Gen.1
FireEye Generic.mg.e5db392e58f21662
Qihoo-360 Virus.Win32.VirLock.A
ALYac Win32.Virlock.Gen.1
Cylance Unsafe
Zillya Virus.Virlock.Win32.1
Sangfor Malware
K7AntiVirus Virus ( 005662d71 )
BitDefender Win32.Virlock.Gen.1
K7GW Virus ( 005662d71 )
Cybereason malicious.e58f21
BitDefenderTheta AI:FileInfector.4097910C13
Cyren W32/Virlock.N.gen!Eldorado
Symantec W32.Virlock!inf4
TotalDefense Win32/Nabucur.C
APEX Malicious
Avast Win32:MalOb-FE [Cryp]
ClamAV Win.Virus.Virlock-6332874-0
Kaspersky Virus.Win32.PolyRansom.b
NANO-Antivirus Trojan.Win32.Gena.doticp
Rising Virus.VirLock!1.A08A (CLASSIC)
Ad-Aware Win32.Virlock.Gen.1
Emsisoft Win32.Virlock.Gen.1 (B)
Comodo TrojWare.Win32.Virlock.XU@5xaovq
F-Secure Trojan.TR/Crypt.ZPACK.Gen
Baidu Win32.Virus.Virlock.a
VIPRE Virus.Win32.Nabucur.b (v)
McAfee-GW-Edition BehavesLike.Win32.VirRansom.gc
Sophos ML/PE-A + W32/VirRnsm-C
SentinelOne Static AI – Malicious PE
Jiangmin Win32/Polyransom.b
Avira TR/Crypt.ZPACK.Gen
MAX malware (ai score=83)
Antiy-AVL Trojan[Packed]/Win32.Gena.a
Microsoft Virus:Win32/Nabucur.A
Arcabit Win32.Virlock.Gen.1
SUPERAntiSpyware Ransom.Virlock/Variant
ZoneAlarm Virus.Win32.PolyRansom.b
GData Win32.Virlock.Gen.1
Cynet Malicious (score: 100)
AhnLab-V3 Win32/Nabucur.C.X1543
Acronis suspicious
McAfee W32/VirRansom.b
TACHYON Virus/W32.VirRansom
VBA32 Virus.VirLock
Malwarebytes Trojan.VirLock
Panda Trj/Genetic.gen
ESET-NOD32 a variant of Win32/Virlock.D
Tencent Virus.Win32.Polyransom.b
Yandex Virus.Virlock.Gen.AAK
Ikarus Virus.Win32.Virlock
Fortinet W32/Virlock.B
AVG Win32:MalOb-FE [Cryp]
CrowdStrike win/malicious_confidence_100% (D)
MaxSecure Virus.PolyRansom.b

How to remove Virus:Win32/Nabucur.A?

  • 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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Paul Valéry

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