MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 d8f0227793cbb22d7d2ed3522ab006b9959c348db25878325dc82b7cfecdbfb1. 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: 12


Intelligence 12 IOCs YARA 8 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: d8f0227793cbb22d7d2ed3522ab006b9959c348db25878325dc82b7cfecdbfb1
SHA3-384 hash: 835c624803695044ad57a1fafc5471c7f61e46c57d5e886206fb9b34d533fcdb7281ddb5cfeaebae1cc98e43d1a3c566
SHA1 hash: 3f46e760d9f4eebe02e3a8f605775c52ea502d01
MD5 hash: 2bba67908c877739311d0f2f1ce733cd
humanhash: robert-winter-bacon-zulu
File name:default.dat
Download: download sample
Signature Efimer
Create hunting rule
File size:13'962'982 bytes
First seen:2026-05-28 23:29:17 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash dcaf48c1f10b0efa0a4472200f3850ed (59 x BlankGrabber, 27 x Efimer, 22 x NetSupport)
ssdeep 393216:SkVOaVUGMIHVvWDJuvPKuXMCHWUjX0cuI3/PGTAI:SjEU2H5gA6uXMb8XhH/O7
TLSH T1EAE6330D76D167DADAF3803C6EA1A0E1E570381607B7C59B1BF493A05E272D08D3A7A7
TrID 37.0% (.EXE) Win64 Executable (generic) (6522/11/2)
28.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
11.5% (.EXE) OS/2 Executable (generic) (2029/13)
11.3% (.EXE) Generic Win/DOS Executable (2002/3)
11.3% (.EXE) DOS Executable (generic) (2000/1)
Magika pebin
dhash icon d4f87cbc8cc47130 (3 x Efimer)
Reporter aachum
Tags:ClickFix Efimer exe


Avatar
iamaachum
https://tuasesoriadigital.es/default.dat

Intelligence

File Origin
# of uploads :
1
# of downloads :
142
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/a282982c-4c28-4225-89f2-0a21740edded/
Malware family:
n/a
ID:
1
File name:
default.dat
Verdict:
No threats detected
Analysis date:
2026-05-28 23:05:44 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/70145ef5-7d5b-44d9-aa1e-c7e9291ce840

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/68351/
Verdict:
Malicious
Score:
94.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6a18ca4133dfa243d40a9a7a
Tags:
installer shell sage
Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a file in the %temp% subdirectories
Restart of the analyzed sample
Creating a window
Sending a custom TCP request
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
anti-debug expand installer-heuristic lolbin masquerade microsoft_visual_cc overlay packed packed packed pyinstaller reconnaissance
Link:
https://www.filescan.io/uploads/6a18cfd412da0d249c5c5141/reports/73171bec-dca7-4ee9-ad32-74ac245676a0/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_70%
Link:
https://www.hybrid-analysis.com/sample/d8f0227793cbb22d7d2ed3522ab006b9959c348db25878325dc82b7cfecdbfb1
Verdict:
Malicious
File Type:
exe x64
First seen:
2026-05-28T20:30:00Z UTC
Last seen:
2026-05-30T02:25:00Z UTC
Hits:
~10
Detections:
HEUR:Trojan.Python.Agent.gen HEUR:Trojan-PSW.Python.Agent.gen
Link:
https://opentip.kaspersky.com/d8f0227793cbb22d7d2ed3522ab006b9959c348db25878325dc82b7cfecdbfb1/results?tab=lookup
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/ffa778e0-4f1f-4348-9519-dfecd65dab07
Result
Threat name:
n/a
Detection:
malicious
Classification:
evad.spyw
Score:
80 / 100
Link:
https://www.joesandbox.com/analysis/1920069
Signature
Adds a directory exclusion to Windows Defender
Contains functionality to infect the boot sector
Found many strings related to Crypto-Wallets (likely being stolen)
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: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: Suspicious Script Execution From Temp Folder
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1920069 Sample: default.dat.exe Startdate: 29/05/2026 Architecture: WINDOWS Score: 80 51 Multi AV Scanner detection for submitted file 2->51 53 Joe Sandbox ML detected suspicious sample 2->53 55 Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet 2->55 57 Sigma detected: Suspicious Script Execution From Temp Folder 2->57 8 default.dat.exe 31 2->8         started        process3 file4 43 C:\Users\user\AppData\...\unicodedata.pyd, PE32+ 8->43 dropped 45 C:\Users\user\AppData\Local\...\select.pyd, PE32+ 8->45 dropped 47 C:\Users\user\AppData\Local\...\python313.dll, PE32+ 8->47 dropped 49 15 other files (none is malicious) 8->49 dropped 63 Contains functionality to infect the boot sector 8->63 65 Adds a directory exclusion to Windows Defender 8->65 67 Found pyInstaller with non standard icon 8->67 12 default.dat.exe 1 8->12         started        signatures5 process6 signatures7 69 Found many strings related to Crypto-Wallets (likely being stolen) 12->69 71 Adds a directory exclusion to Windows Defender 12->71 15 cmd.exe 1 12->15         started        18 cmd.exe 1 12->18         started        20 cmd.exe 1 12->20         started        22 3 other processes 12->22 process8 signatures9 73 Adds a directory exclusion to Windows Defender 15->73 24 powershell.exe 23 15->24         started        27 conhost.exe 15->27         started        29 powershell.exe 23 18->29         started        31 conhost.exe 18->31         started        33 powershell.exe 23 20->33         started        35 conhost.exe 20->35         started        37 powershell.exe 22->37         started        39 powershell.exe 22->39         started        41 4 other processes 22->41 process10 signatures11 59 Found many strings related to Crypto-Wallets (likely being stolen) 24->59 61 Loading BitLocker PowerShell Module 24->61
Score:
99%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/d8f0227793cbb22d7d2ed3522ab006b9959c348db25878325dc82b7cfecdbfb1
Gathering data
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/d8f0227793cbb22d7d2ed3522ab006b9959c348db25878325dc82b7cfecdbfb1/
Verdict:
Malicious
Threat:
Trojan.Python.Agent
Link:
https://tip.neiki.dev/file/d8f0227793cbb22d7d2ed3522ab006b9959c348db25878325dc82b7cfecdbfb1
Threat name:
Win64.Trojan.Egairtigado
Create hunting rule
Status:
Malicious
First seen:
2026-05-28 23:05:49 UTC
File Type:
PE+ (Exe)
Extracted files:
482
AV detection:
10 of 23 (43.48%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=3dyce54tzozc27jo2njcvmagxgkzynenwjmhqms5zavxz7wnx6yq._file
Result
Malware family:
n/a
Score:
  8/10
Tags:
execution pyarmor pyinstaller
Link:
https://tria.ge/reports/260528-3gq6lad13n/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Loads dropped DLL
Command and Scripting Interpreter: PowerShell
Unpacked files
SH256 hash:
d8f0227793cbb22d7d2ed3522ab006b9959c348db25878325dc82b7cfecdbfb1
MD5 hash:
2bba67908c877739311d0f2f1ce733cd
SHA1 hash:
3f46e760d9f4eebe02e3a8f605775c52ea502d01
Link:
https://www.unpac.me/results/52ca12c9-598c-40fa-8ae6-cd6a66a34f53/
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/d8f0227793cbb22d7d2ed3522ab006b9959c348db25878325dc82b7cfecdbfb1

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:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
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: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:telebot_framework
Create hunting rule
Author:vietdx.mb
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 d8f0227793cbb22d7d2ed3522ab006b9959c348db25878325dc82b7cfecdbfb1

(this sample)

  
Link
https://tria.ge/260528-2xqdkadz4l/behavioral1
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/68351/

Comments