MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 fbe720229b96efaa4082c195a6d98d43005e1f69ed031f3f9b1f8dcb2113f4d8. While MalwareBazaar tries to identify whether the sample provided is malicious or not, there is no guarantee that a sample in MalwareBazaar is malicious.

Database Entry


NanoCore


Vendor detections: 10


Intelligence 10 IOCs YARA 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: fbe720229b96efaa4082c195a6d98d43005e1f69ed031f3f9b1f8dcb2113f4d8
SHA3-384 hash: eb802f8968da7d8a3ec5973d199419b43de7ecac2500b3cff6f69276ce396b2965ad10cb40773c629339ed13707f3765
SHA1 hash: 6a0e803d056ba79c0da94b949d69b5d8f64fa9aa
MD5 hash: 61ccdeae0fe7e5ad74e11b893d28b0d4
humanhash: green-coffee-undress-tennis
File name:Grabber.exe
Download: download sample
Signature NanoCore
Create hunting rule
File size:3'764'736 bytes
First seen:2021-10-16 14:18:48 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 4cea7ae85c87ddc7295d39ff9cda31d1 (85 x RedLineStealer, 71 x LummaStealer, 62 x Rhadamanthys)
ssdeep 98304:T8rtcykLHsNcxsrSg33cAUNluEtSMT8hl6ZAm9PQB:TSdkLHQos+a3VMjYMQh0m5
Threatray 923 similar samples on MalwareBazaar
TLSH T10806332023F421B2E5B577F658B3161347B73CD18A34D6EF0282957E5A12AA0953FF2B
File icon (PE):PE icon
dhash icon f8f0f4c8c8c8d8f0 (8'803 x RedLineStealer, 5'078 x Amadey, 288 x Smoke Loader)
Reporter JaffaCakes118
Tags:exe NanoCore

Intelligence

File Origin
# of uploads :
1
# of downloads :
510
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/197881/
Detection(s):
Win.Malware.Refroso-9872010-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file in the %temp% subdirectories
Creating a process from a recently created file
Using the Windows Management Instrumentation requests
Creating a file
DNS request
Connection attempt
Sending a custom TCP request
Deleting a recently created file
Running batch commands
Creating a process with a hidden window
Replacing files
Launching a process
Launching a service
Changing a file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
nanocore packed
Link:
https://www.filescan.io/uploads/616adf59db358dd15ebd310e/reports/afef4f31-5659-4aa2-af15-a1dc949708e3/overview
Result
Verdict:
MALICIOUS
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Malware family:
NanoCoreRAT
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/7f4fc1c0-c5d8-4363-bd17-9def31fd208a
Result
Threat name:
Nanocore
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/871576
Signature
.NET source code contains potential unpacker
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Creates multiple autostart registry keys
Detected Nanocore Rat
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
May check the online IP address of the machine
Multi AV Scanner detection for submitted file
Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines)
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Sigma detected: Suspicious Script Execution From Temp Folder
Sigma detected: Suspicious Splwow64 Without Params
Sigma detected: WScript or CScript Dropper
Sigma detected: Xwizard DLL Sideloading
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to harvest and steal browser information (history, passwords, etc)
Yara detected BrowsingHistoryView browser history reader tool
Yara detected Costura Assembly Loader
Yara detected Nanocore RAT
Yara detected WebBrowserPassView password recovery tool
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 504000 Sample: Grabber.exe Startdate: 16/10/2021 Architecture: WINDOWS Score: 100 114 Malicious sample detected (through community Yara rule) 2->114 116 Antivirus detection for dropped file 2->116 118 Antivirus / Scanner detection for submitted sample 2->118 120 14 other signatures 2->120 11 Grabber.exe 1 4 2->11         started        15 rundll32.exe 2->15         started        17 rundll32.exe 2->17         started        process3 file4 86 C:\Users\user\AppData\Local\Temp\...\sas.exe, PE32 11->86 dropped 88 C:\Users\user\AppData\Local\Temp\...\gg.exe, PE32+ 11->88 dropped 136 Creates multiple autostart registry keys 11->136 19 gg.exe 1 4 11->19         started        signatures5 process6 file7 76 C:\Users\user\AppData\Local\Temp\...\ss.exe, Unknown 19->76 dropped 78 C:\Users\user\AppData\Local\...\ITROUB~1.EXE, Unknown 19->78 dropped 122 Antivirus detection for dropped file 19->122 124 Machine Learning detection for dropped file 19->124 126 Creates multiple autostart registry keys 19->126 23 ss.exe 5 19->23         started        27 ITROUB~1.EXE 15 2 19->27         started        signatures8 process9 dnsIp10 80 C:\Users\user\AppData\...\RtkBtManServ.exe, PE32 23->80 dropped 82 C:\Users\user\AppData\Local\...\ss.exe.log, ASCII 23->82 dropped 128 Antivirus detection for dropped file 23->128 130 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 23->130 132 Machine Learning detection for dropped file 23->132 30 RtkBtManServ.exe 17 46 23->30         started        100 itroublvehacker.gq 27->100 file11 signatures12 process13 dnsIp14 102 api64.ipify.org 108.171.202.195, 443, 49752 WEBNXUS United States 30->102 104 discord.com 162.159.128.233, 443, 49753, 49809 CLOUDFLARENETUS United States 30->104 106 3 other IPs or domains 30->106 90 C:\Users\user\AppData\Local\...\xwizard.exe, PE32 30->90 dropped 92 C:\Users\user\AppData\Local\...\winhlp32.exe, PE32 30->92 dropped 94 C:\Users\user\AppData\Local\...\splwow64.exe, PE32 30->94 dropped 96 5 other files (3 malicious) 30->96 dropped 108 May check the online IP address of the machine 30->108 110 Machine Learning detection for dropped file 30->110 112 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 30->112 35 wscript.exe 30->35         started        37 wscript.exe 30->37         started        39 wscript.exe 30->39         started        41 2 other processes 30->41 file15 signatures16 process17 process18 43 cmd.exe 35->43         started        45 cmd.exe 37->45         started        47 cmd.exe 39->47         started        49 cmd.exe 41->49         started        51 conhost.exe 41->51         started        53 choice.exe 41->53         started        process19 55 xwizard.exe 43->55         started        59 conhost.exe 43->59         started        61 winhlp32.exe 45->61         started        63 conhost.exe 45->63         started        74 2 other processes 45->74 65 snuvcdsm.exe 47->65         started        68 conhost.exe 47->68         started        70 conhost.exe 49->70         started        72 bfsvc.exe 49->72         started        dnsIp20 84 C:\Users\user\AppData\...\user_History.txt, Little-endian 55->84 dropped 134 Tries to harvest and steal browser information (history, passwords, etc) 55->134 98 192.168.2.1 unknown unknown 65->98 file21 signatures22
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/fbe720229b96efaa4082c195a6d98d43005e1f69ed031f3f9b1f8dcb2113f4d8/
Threat name:
ByteCode-MSIL.Backdoor.NanoCore
Create hunting rule
Status:
Malicious
First seen:
2021-10-16 14:19:05 UTC
AV detection:
20 of 27 (74.07%)
Threat level:
  5/5
Verdict:
malicious
Similar samples:
04e34aad6466f6bfbf51a502632f94e8b2af089740ac1301f4b6443c026c35ad
NanoCore
410efc30abd91864c136cc7952d17c86eaa4d843e2b745c3f9635addadec6b2f
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4610964296986b751c0dfaf9ad5677d467fbd77fb5142bf1c64b5fb1e0ff94f5
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947b5393f12d2a410be2390fbd37be20705d06a67672af5dc71bd86e8c50a025
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ae32233ca2a4c0ffb03a6da6154ff2610fe445bdfd8619948b09117ca44ee30b
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b65c51251c0445646e6d21c48a4996e9b84f69d2e4564e2853e58c0a153208c6
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bc91fdad85c2e503dd2b21466af613f1bb5ed56f385131c97f15de03e34de141
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c23fa54fe44af56db02c448f0304e66ad04812e7ea462d66da776b42b1925b1a
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d4b4f0e3c29dcd4732bafa345616d73211c86eebccaa84e770c456d0c6f118df
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f5cff077c0c9be3d208d6d14251208e3146164d289a0f7337be1a5b1f7ca76c5
NanoCore
+ 913 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  9/10
Tags:
persistence spyware stealer upx
Link:
https://tria.ge/reports/211016-rmt9nacggp/
Behaviour
Modifies registry class
Modifies system certificate store
Suspicious behavior: CmdExeWriteProcessMemorySpam
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Adds Run key to start application
Loads dropped DLL
Reads user/profile data of web browsers
Executes dropped EXE
UPX packed file
NirSoft WebBrowserPassView
Nirsoft
Unpacked files
SH256 hash:
fbe720229b96efaa4082c195a6d98d43005e1f69ed031f3f9b1f8dcb2113f4d8
MD5 hash:
61ccdeae0fe7e5ad74e11b893d28b0d4
SHA1 hash:
6a0e803d056ba79c0da94b949d69b5d8f64fa9aa
Link:
https://www.unpac.me/results/8458b12b-9f63-406c-a1a0-d8c35c5cbbd9/
Malware family:
NanoCore
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/fbe720229b96/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Nanocore
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/fbe720229b96efaa4082c195a6d98d43005e1f69ed031f3f9b1f8dcb2113f4d8

YARA Signatures

MalwareBazaar uses YARA rules from several public and non-public repositories, such as YARAhub and Malpedia. Those are being matched against malware samples uploaded to MalwareBazaar as well as against any suspicious process dumps they may create. Please note that only results from TLP:CLEAR rules are being displayed.

Rule name:INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFuture
Create hunting rule
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Web download

NanoCore

Executable exe fbe720229b96efaa4082c195a6d98d43005e1f69ed031f3f9b1f8dcb2113f4d8

(this sample)

  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/197881/

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