MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 45e22850f99f1fb374587c1655ac2628ff8cc198bcc2b2ece62b75e22895b23b. 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: 14


Intelligence 14 IOCs YARA 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 45e22850f99f1fb374587c1655ac2628ff8cc198bcc2b2ece62b75e22895b23b
SHA3-384 hash: 0f8171fa078de3bfd1e8859c479d1a21df86bd5bc00238f1566b46b9dbfdb8f352a8ce66a6892eb87a54ae1ea26071b1
SHA1 hash: 073d770af6e50f89cb44cf7e406746b45f26ce1d
MD5 hash: f2b7c2749b9c53f4b3d48d9ca0922bc3
humanhash: beryllium-pluto-artist-jupiter
File name:common.dat
Download: download sample
Signature Efimer
Create hunting rule
File size:12'622'269 bytes
First seen:2026-03-01 12:24:28 UTC
Last seen:2026-03-01 13:31:14 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash c5e49de42b1165b00bd79240b8cd617d (5 x Efimer)
ssdeep 393216:0NXX2q2eItflwlQ/vSMsyuFXMCHWUjX9cuI3/PGTAI:0h2jt9CyuFXMb8XKH/O7
TLSH T144D6332C94C630DDCBB7C1B8BFD26AB1B4A8B4764371AD3A9328D3727C5359059B904B
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://db-websolutions.com/common.dat

Intelligence

File Origin
# of uploads :
2
# of downloads :
124
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/04bc1362-31b1-4b38-bdfc-2623505a1317/
Malware family:
n/a
ID:
1
File name:
common.dat
Verdict:
Malicious activity
Analysis date:
2026-03-01 12:17:24 UTC
Tags:
python evasion pyinstaller anti-evasion crypto-regex efimer stealer
Link:
https://app.any.run/tasks/2e0aa7f0-191d-4d8a-8b81-f04bed1839ea

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/55090/
Verdict:
Malicious
Score:
92.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=69a42e4a8fffa866e3b3ba4c
Tags:
installer shell sage
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
anti-debug expand installer-heuristic lolbin masquerade overlay packed packed pyinstaller
Link:
https://www.filescan.io/uploads/69a4302f10e80629d4f752c5/reports/9d29a5ad-47a2-4701-810c-5cbed6ac1016/overview
Verdict:
Malicious
Labled as:
Trojan[Packed]/Win64.PyInstaller
Link:
https://www.hybrid-analysis.com/sample/45e22850f99f1fb374587c1655ac2628ff8cc198bcc2b2ece62b75e22895b23b
Result
Gathering data
Verdict:
Malicious
File Type:
exe x64
Detections:
HEUR:Trojan.Python.Agent.gen
Link:
https://opentip.kaspersky.com/45e22850f99f1fb374587c1655ac2628ff8cc198bcc2b2ece62b75e22895b23b/results?tab=lookup
Malware family:
Santastealer
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/12ed11f4-cbd4-4a69-8399-740b6a0dcdf3
Result
Threat name:
Efimer Clipper
Create hunting rule
Detection:
malicious
Classification:
spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1876469
Signature
Adds a directory exclusion to Windows Defender
Found pyInstaller with non standard icon
Found Tor onion address
Joe Sandbox ML detected suspicious sample
Loading BitLocker PowerShell Module
Malicious sample detected (through community Yara rule)
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: 1876469 Sample: common.dat.exe Startdate: 01/03/2026 Architecture: WINDOWS Score: 100 75 ipinfo.io 2->75 89 Malicious sample detected (through community Yara rule) 2->89 91 Multi AV Scanner detection for submitted file 2->91 93 Yara detected Efimer Clipper 2->93 95 7 other signatures 2->95 9 common.dat.exe 30 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 16 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 Found Tor onion address 13->105 107 Windows Scripting host queries suspicious COM object (likely to drop second stage) 13->107 109 Suspicious execution chain found 13->109 111 WScript reads language and country specific registry keys (likely country aware script) 15->111 21 ugate.exe 15->21         started        24 curl.exe 15->24         started        signatures6 process7 dnsIp8 59 C:\Users\Public\Documents\afuho\ugate.exe, PE32+ 17->59 dropped 61 C:\Users\Public\Documents\afuho\izayi.js, ASCII 17->61 dropped 63 C:\Users\Public\Documents\afuho\ikozo.xml, XML 17->63 dropped 65 C:\Users\Public\Documents\afuho\ikozo.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 77 162.247.74.217, 443, 49732 CALYX-ASUS United States 21->77 79 81.235.144.114, 49279 TELIANET-SWEDENTeliaCompanySE Sweden 21->79 81 5 other IPs or domains 21->81 33 conhost.exe 21->33         started        35 conhost.exe 24->35         started        file9 signatures10 process11 dnsIp12 113 Adds a directory exclusion to Windows Defender 26->113 40 powershell.exe 23 26->40         started        43 conhost.exe 26->43         started        45 powershell.exe 23 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 23 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
Verdict:
inconclusive
YARA:
6 match(es)
Tags:
Executable PE (Portable Executable) PE File Layout Win 64 Exe x64
Link:
https://app.malva.re/file/f2b7c2749b9c53f4b3d48d9ca0922bc3
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/45e22850f99f1fb374587c1655ac2628ff8cc198bcc2b2ece62b75e22895b23b/
Verdict:
Malicious
Threat:
Trojan.Python.Agent
Link:
https://tip.neiki.dev/file/45e22850f99f1fb374587c1655ac2628ff8cc198bcc2b2ece62b75e22895b23b
Threat name:
Win64.Malware.Generic
Create hunting rule
Status:
Suspicious
First seen:
2026-03-01 12:17:17 UTC
File Type:
PE+ (Exe)
Extracted files:
481
AV detection:
5 of 36 (13.89%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ixrcquhzt4p3g5cypqlfllbgfd7yzqmyxtblf3hgfn26ekevwi5q._file
Result
Malware family:
efimer
Create hunting rule
Score:
  10/10
Tags:
family:efimer execution persistence pyinstaller trojan
Link:
https://tria.ge/reports/260301-plrq2agy2d/
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:
45e22850f99f1fb374587c1655ac2628ff8cc198bcc2b2ece62b75e22895b23b
MD5 hash:
f2b7c2749b9c53f4b3d48d9ca0922bc3
SHA1 hash:
073d770af6e50f89cb44cf7e406746b45f26ce1d
Link:
https://www.unpac.me/results/6e87334e-664f-479d-aad2-c83125043f63/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/45e22850f99f/report/overview.html
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/45e22850f99f1fb374587c1655ac2628ff8cc198bcc2b2ece62b75e22895b23b

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: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 45e22850f99f1fb374587c1655ac2628ff8cc198bcc2b2ece62b75e22895b23b

(this sample)

  
Link
https://tria.ge/260301-pcjztsfy9a/behavioral2
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/55090/

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