MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 6b3354b506b7fc50039fe6596d41344d175e9d9337f435bebcd9e5234163ced0. 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


Efimer


Vendor detections: 16


Intelligence 16 IOCs YARA 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 6b3354b506b7fc50039fe6596d41344d175e9d9337f435bebcd9e5234163ced0
SHA3-384 hash: be36c2fe4582099708633794ac562fce9a93e779287dc885bc85681fe3c4e4d8fa9d4050e455f7a4b1af732196cd3e2a
SHA1 hash: 91ea88d459baffb4912fc4114bdddc8ce45eaf2e
MD5 hash: 391f4b6d4f065de123b7a07bc9ca876d
humanhash: one-lamp-avocado-november
File name:common.dat
Download: download sample
Signature Efimer
Create hunting rule
File size:12'623'315 bytes
First seen:2026-03-18 21:55:54 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash c5e49de42b1165b00bd79240b8cd617d (13 x Efimer)
ssdeep 393216:PsTOEfAbff09WJ9XMCHWUjXccuI3/PGTAI:PIWf04J9XMb8XJH/O7
TLSH T150D6331DADC160EDCBB3D0B47EF22AB5B46178A142B05DBB17A8C3B16C431B85D6C49B
TrID 45.6% (.EXE) Microsoft Visual C++ compiled executable (generic) (16529/12/5)
18.0% (.EXE) Win64 Executable (generic) (6522/11/2)
13.9% (.EXE) Win16 NE executable (generic) (5038/12/1)
5.6% (.ICL) Windows Icons Library (generic) (2059/9)
5.6% (.EXE) OS/2 Executable (generic) (2029/13)
Magika pebin
Reporter aachum
Tags:ClickFix Efimer exe


Avatar
iamaachum
https://bio-onn.com/common.dat

Intelligence

File Origin
# of uploads :
1
# of downloads :
104
Origin country :
ES ES
Vendor Threat Intelligence
Malware configuration found for:
PyInstaller
Details
PyInstaller
a compiled assembly and a Python version
Link:
https://research.acce.ciphertechsolutions.com/results/9d35d29c-391f-4291-9539-8fa66ae3b73b/
Malware family:
n/a
ID:
1
File name:
_6b3354b506b7fc50039fe6596d41344d175e9d9337f435bebcd9e5234163ced0.exe
Verdict:
Suspicious activity
Analysis date:
2026-03-18 21:58:31 UTC
Tags:
python pyinstaller
Link:
https://app.any.run/tasks/be586fb3-2dab-4b03-a2d6-56bbc8e09cff

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/58033/
Detection(s):
SecuriteInfo.com.Win64.Malware-gen.61392154.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
94.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=69bb200993b644ca466b78cc
Tags:
installer extens shell
Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a file in the %temp% subdirectories
Restart of the analyzed sample
Creating a window
DNS request
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
anti-debug expand installer-heuristic lolbin masquerade overlay packed packed packed pyinstaller
Link:
https://www.filescan.io/uploads/69bb1f7b2000fc76c3eaf59b/reports/677d8f90-75ad-4ca9-afec-5e4f8aece418/overview
Verdict:
Malicious
Labled as:
Tedy.Generic
Link:
https://www.hybrid-analysis.com/sample/6b3354b506b7fc50039fe6596d41344d175e9d9337f435bebcd9e5234163ced0
Result
Gathering data
Verdict:
Malicious
File Type:
exe x64
Detections:
HEUR:Trojan.Python.Agent.gen
Link:
https://opentip.kaspersky.com/6b3354b506b7fc50039fe6596d41344d175e9d9337f435bebcd9e5234163ced0/results?tab=lookup
Malware family:
Santastealer
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/f53bfd38-414d-453c-86ee-f45861e8ec69
Result
Threat name:
Efimer Clipper
Create hunting rule
Detection:
malicious
Classification:
spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1886047
Signature
Adds a directory exclusion to Windows Defender
Found pyInstaller with non standard icon
Joe Sandbox ML detected suspicious sample
Loading BitLocker PowerShell Module
Multi AV Scanner detection for submitted file
Sigma detected: Execution from Suspicious Folder
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: Script Interpreter Execution From Suspicious Folder
Sigma detected: Suspicious Program Location with Network Connections
Sigma detected: Suspicious Script Execution From Temp Folder
Sigma detected: WScript or CScript Dropper
Suspicious execution chain found
Uses schtasks.exe or at.exe to add and modify task schedules
Windows Scripting host queries suspicious COM object (likely to drop second stage)
WScript reads language and country specific registry keys (likely country aware script)
Yara detected Efimer Clipper
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1886047 Sample: common.dat.exe Startdate: 18/03/2026 Architecture: WINDOWS Score: 100 75 ipinfo.io 2->75 89 Multi AV Scanner detection for submitted file 2->89 91 Yara detected Efimer Clipper 2->91 93 Sigma detected: WScript or CScript Dropper 2->93 95 6 other signatures 2->95 9 common.dat.exe 31 2->9         started        13 wscript.exe 2->13         started        15 wscript.exe 2->15         started        signatures3 process4 file5 67 C:\Users\user\AppData\...\unicodedata.pyd, PE32+ 9->67 dropped 69 C:\Users\user\AppData\Local\...\select.pyd, PE32+ 9->69 dropped 71 C:\Users\user\AppData\Local\...\python313.dll, PE32+ 9->71 dropped 73 15 other files (none is malicious) 9->73 dropped 99 Uses schtasks.exe or at.exe to add and modify task schedules 9->99 101 Adds a directory exclusion to Windows Defender 9->101 103 Found pyInstaller with non standard icon 9->103 17 common.dat.exe 10 9->17         started        105 Windows Scripting host queries suspicious COM object (likely to drop second stage) 13->105 107 WScript reads language and country specific registry keys (likely country aware script) 13->107 21 ugate.exe 13->21         started        24 curl.exe 13->24         started        109 Suspicious execution chain found 15->109 signatures6 process7 dnsIp8 59 C:\Users\Public\Documents\obiwi\ugate.exe, PE32+ 17->59 dropped 61 C:\Users\Public\Documents\obiwi\icoce.xml, XML 17->61 dropped 63 C:\Users\Public\Documents\obiwi\icoce.js, ASCII 17->63 dropped 65 C:\Users\Public\Documents\obiwi\ejici.js, ASCII 17->65 dropped 87 Adds a directory exclusion to Windows Defender 17->87 26 cmd.exe 1 17->26         started        29 cmd.exe 1 17->29         started        31 cmd.exe 1 17->31         started        37 6 other processes 17->37 77 200.122.181.2, 443, 49733 RADIOGRAFICACOSTARRICENSECR Costa Rica 21->77 79 38.132.178.154, 9001 SKYBESTUS United States 21->79 81 16 other IPs or domains 21->81 33 conhost.exe 21->33         started        35 conhost.exe 24->35         started        file9 signatures10 process11 dnsIp12 111 Adds a directory exclusion to Windows Defender 26->111 40 powershell.exe 23 26->40         started        43 conhost.exe 26->43         started        45 powershell.exe 22 29->45         started        47 conhost.exe 29->47         started        49 powershell.exe 23 31->49         started        51 conhost.exe 31->51         started        83 ipinfo.io 34.117.59.81, 443, 49727 GOOGLE-AS-APGoogleAsiaPacificPteLtdSG United States 37->83 85 127.0.0.1 unknown unknown 37->85 53 powershell.exe 37->53         started        55 powershell.exe 37->55         started        57 7 other processes 37->57 signatures13 process14 signatures15 97 Loading BitLocker PowerShell Module 40->97
Score:
93%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/6b3354b506b7fc50039fe6596d41344d175e9d9337f435bebcd9e5234163ced0
Gathering data
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/6b3354b506b7fc50039fe6596d41344d175e9d9337f435bebcd9e5234163ced0/
Verdict:
Malicious
Threat:
Family.EFIMER
Link:
https://tip.neiki.dev/file/6b3354b506b7fc50039fe6596d41344d175e9d9337f435bebcd9e5234163ced0
Threat name:
Win64.Dropper.Generic
Create hunting rule
Status:
Suspicious
First seen:
2026-03-18 21:56:25 UTC
File Type:
PE+ (Exe)
Extracted files:
482
AV detection:
11 of 36 (30.56%)
Threat level:
  3/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=nmzvjnigw76faa474zmw2qjujulv5hmtg72dlpv43hssgqldz3ia._file
Result
Malware family:
efimer
Create hunting rule
Score:
  10/10
Tags:
family:efimer execution persistence pyarmor pyinstaller trojan
Link:
https://tria.ge/reports/260318-1te8radz7y/
Behaviour
Scheduled Task/Job: Scheduled Task
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Command and Scripting Interpreter: JavaScript
Enumerates physical storage devices
Looks up external IP address via web service
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Command and Scripting Interpreter: PowerShell
Efimer
Efimer family
Unpacked files
SH256 hash:
6b3354b506b7fc50039fe6596d41344d175e9d9337f435bebcd9e5234163ced0
MD5 hash:
391f4b6d4f065de123b7a07bc9ca876d
SHA1 hash:
91ea88d459baffb4912fc4114bdddc8ce45eaf2e
Link:
https://www.unpac.me/results/d2a4d13a-cae1-4ffa-ad8f-4642c8d55d1e/
SH256 hash:
06ea65ac4a578956da6cc81929370ef0f7c5785e63b703ab13ac1856aab3e16a
MD5 hash:
3b0c6564ae3dd880501b42c75592f92c
SHA1 hash:
e7c52c0c2b796369f052b8b2933720279831c6cb
Detections:
SUSP_OBF_PyArmor_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/d2a4d13a-cae1-4ffa-ad8f-4642c8d55d1e/
SH256 hash:
36585912e5eaf83ba9fea0631534f690ccdc2d7ba91537166fe53e56c221e153
MD5 hash:
862f820c3251e4ca6fc0ac00e4092239
SHA1 hash:
ef96d84b253041b090c243594f90938e9a487a9a
Link:
https://www.unpac.me/results/d2a4d13a-cae1-4ffa-ad8f-4642c8d55d1e/
SH256 hash:
a5c6a329698490a035133433928d04368ce6285bb91a9d074fc285de4c9a32a4
MD5 hash:
16855ebef31c5b1ebe767f1c617645b3
SHA1 hash:
315521f3a748abfa35cd4d48e8dd09d0556d989b
Link:
https://www.unpac.me/results/d2a4d13a-cae1-4ffa-ad8f-4642c8d55d1e/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/6b3354b506b7fc50039fe6596d41344d175e9d9337f435bebcd9e5234163ced0

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:DebuggerException__SetConsoleCtrl
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:Detect_PyInstaller
Create hunting rule
Author:Obscurity Labs LLC
Description:Detects PyInstaller compiled executables across platforms
Rule name:golang_bin_JCorn_CSC846
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:pe_detect_tls_callbacks
Create hunting rule
Rule name:PyInstaller
Create hunting rule
Author:@bartblaze
Description:Identifies executable converted using PyInstaller. This rule by itself does NOT necessarily mean the detected file is malicious.
Rule name:TH_AntiVM_MassHunt_Win_Malware_2026_CYFARE
Create hunting rule
Author:CYFARE
Description:Detects Windows malware employing anti-VM / anti-sandbox evasion techniques across VMware, VirtualBox, Hyper-V, QEMU, Xen, and generic sandbox environments
Reference:https://cyfare.net/
Rule name:upxHook
Create hunting rule
Author:@r3dbU7z
Description:Detect artifacts from 'upxHook' - modification of UPX packer
Reference:https://bazaar.abuse.ch/sample/6352be8aa5d8063673aa428c3807228c40505004320232a23d99ebd9ef48478a/

File information

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

Web download

Efimer

Executable exe 6b3354b506b7fc50039fe6596d41344d175e9d9337f435bebcd9e5234163ced0

(this sample)

  
Link
https://tria.ge/260318-v4glnsgt6n/behavioral2
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/58033/

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