MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 d723ccbf086fa299a5513d2f5ebdbb8206cfbd2d034441db1809fdbc7afe3f70. 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: 9


Intelligence 9 IOCs YARA 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: d723ccbf086fa299a5513d2f5ebdbb8206cfbd2d034441db1809fdbc7afe3f70
SHA3-384 hash: 9663079e6f621fc37b1a0c0d572fd7e79825f7262501c6d3ceb4afbe43c7c6626008937d67bc6ff3673011ad6cf0ad29
SHA1 hash: ec7fdc8ec0d72c705ca014a51dd5360c5c6b07cb
MD5 hash: 00c6c592b1ecb9f1e73d6d458f001d09
humanhash: tennessee-eighteen-mars-nine
File name:composer.php
Download: download sample
Signature Efimer
Create hunting rule
File size:14'058'345 bytes
First seen:2026-08-15 02:52:51 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash cf72283be50852e418ce6bbb6b645835 (101 x Efimer, 32 x Adware.Yogi, 8 x BlankGrabber)
ssdeep 393216:x8AEbBDtT9s61CXLQ6whjjyDLMoXMCHWUjfpcuI3/PGTAI:x8j3DUXLxt3FXMb8WH/O7
TLSH T1E1E63384D5F211EED5F3513CEAE12AA4E9B5B4752772CCDB8BA897A03D031E05D3A603
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 fcf8f8f8f8f8e0e0 (2 x Efimer)
Reporter aachum
Tags:ClickFix Efimer exe


Avatar
iamaachum
https://webenvysolutions.com/composer.php

Intelligence

File Origin
# of uploads :
1
# of downloads :
184
Origin country :
ES ES
Vendor Threat Intelligence
Malware configuration found for:
PyInstaller
Details
Link:
https://research.acce.ciphertechsolutions.com/results/d81cf71c-e5f6-412a-b1e8-115debec9a8d/
Malware family:
n/a
ID:
1
File name:
exe
Verdict:
No threats detected
Analysis date:
2026-08-15 02:54:26 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/5902d60d-ec3d-441a-a735-bb61ef0dddfc

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/81266/
Detection(s):
SecuriteInfo.com.Variant.Yogi.50160.99732253.UNOFFICIAL
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a file in the %temp% subdirectories
Restart of the analyzed sample
Creating a window
Verdict:
Unknown
Threat level:
  2.5/10
Confidence:
100%
Tags:
adaptive-context anti-debug expand installer-heuristic lolbin masquerade microsoft_visual_cc overlay packed packed packed pyinstaller reconnaissance
Link:
https://www.filescan.io/uploads/6a7fd4a5cc7d04a12a916190/reports/b399fdb4-d169-4fe9-9fa8-9ac4344aade9/overview
Verdict:
Malicious
Labled as:
Yogi.Generic
Link:
https://www.hybrid-analysis.com/sample/d723ccbf086fa299a5513d2f5ebdbb8206cfbd2d034441db1809fdbc7afe3f70
Verdict:
Malicious
File Type:
exe x64
First seen:
2026-08-15T00:40:00Z UTC
Last seen:
2026-08-16T23:01:00Z UTC
Hits:
~100
Link:
https://opentip.kaspersky.com/d723ccbf086fa299a5513d2f5ebdbb8206cfbd2d034441db1809fdbc7afe3f70/results?tab=lookup
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/d0e37ef9-8211-4be0-8e8f-127594ae980f
Result
Threat name:
n/a
Detection:
malicious
Classification:
evad
Score:
60 / 100
Link:
https://www.joesandbox.com/analysis/1958489
Signature
Contains functionality to infect the boot sector
Found pyInstaller with non standard icon
Multi AV Scanner detection for submitted file
Sigma detected: Rare Remote Thread Creation By Uncommon Source Image
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1958489 Sample: composer.php.exe Startdate: 15/08/2026 Architecture: WINDOWS Score: 60 51 Multi AV Scanner detection for submitted file 2->51 53 Sigma detected: Rare Remote Thread Creation By Uncommon Source Image 2->53 9 composer.php.exe 31 2->9         started        process3 file4 43 C:\Users\user\AppData\...\unicodedata.pyd, PE32+ 9->43 dropped 45 C:\Users\user\AppData\Local\...\select.pyd, PE32+ 9->45 dropped 47 C:\Users\user\AppData\Local\...\python313.dll, PE32+ 9->47 dropped 49 15 other files (none is malicious) 9->49 dropped 55 Contains functionality to infect the boot sector 9->55 57 Found pyInstaller with non standard icon 9->57 13 composer.php.exe 2 9->13         started        signatures5 process6 process7 15 cmd.exe 1 13->15         started        17 cmd.exe 1 13->17         started        19 cmd.exe 1 13->19         started        21 2 other processes 13->21 process8 23 WMIC.exe 1 15->23         started        25 conhost.exe 15->25         started        27 WMIC.exe 1 17->27         started        29 conhost.exe 17->29         started        31 WMIC.exe 1 19->31         started        33 conhost.exe 19->33         started        35 WMIC.exe 1 21->35         started        37 WMIC.exe 1 21->37         started        39 2 other processes 21->39 process9 41 WmiPrvSE.exe 23->41         started       
Score:
98%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/d723ccbf086fa299a5513d2f5ebdbb8206cfbd2d034441db1809fdbc7afe3f70
Verdict:
inconclusive
YARA:
5 match(es)
Tags:
Executable PDB Path PE (Portable Executable) PE File Layout Win 64 Exe x64
Link:
https://app.malva.re/file/00c6c592b1ecb9f1e73d6d458f001d09
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/d723ccbf086fa299a5513d2f5ebdbb8206cfbd2d034441db1809fdbc7afe3f70/
Threat name:
Win64.Trojan.Multiverze
Create hunting rule
Status:
Malicious
First seen:
2026-08-15 02:53:31 UTC
File Type:
PE+ (Exe)
Extracted files:
482
AV detection:
16 of 38 (42.11%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=24r4zpyin6rjtjkrhuxv5pn3qidm7pjnancedwyybh63y6x6h5ya._file
Result
Malware family:
n/a
Score:
  7/10
Tags:
execution pyarmor pyinstaller
Link:
https://tria.ge/reports/260815-ddhmlsdq2y/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Executes a command shell one-liner
Loads dropped DLL
Unpacked files
SH256 hash:
d723ccbf086fa299a5513d2f5ebdbb8206cfbd2d034441db1809fdbc7afe3f70
MD5 hash:
00c6c592b1ecb9f1e73d6d458f001d09
SHA1 hash:
ec7fdc8ec0d72c705ca014a51dd5360c5c6b07cb
Link:
https://www.unpac.me/results/cca2132b-3726-4513-8a90-1799c92c710c/
SH256 hash:
36585912e5eaf83ba9fea0631534f690ccdc2d7ba91537166fe53e56c221e153
MD5 hash:
862f820c3251e4ca6fc0ac00e4092239
SHA1 hash:
ef96d84b253041b090c243594f90938e9a487a9a
Link:
https://www.unpac.me/results/cca2132b-3726-4513-8a90-1799c92c710c/
SH256 hash:
7fb3244a7f227001e0d825b0ae84cf119653f75477ac1ed32b4ddf8a9e86dfa6
MD5 hash:
e9d6a17d66ee89f888a35b554d41351f
SHA1 hash:
ddf5f48090ce8d1dcfe7bb1b63e1b1dbb3f24e07
Link:
https://www.unpac.me/results/cca2132b-3726-4513-8a90-1799c92c710c/
SH256 hash:
a5c6a329698490a035133433928d04368ce6285bb91a9d074fc285de4c9a32a4
MD5 hash:
16855ebef31c5b1ebe767f1c617645b3
SHA1 hash:
315521f3a748abfa35cd4d48e8dd09d0556d989b
Link:
https://www.unpac.me/results/cca2132b-3726-4513-8a90-1799c92c710c/
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/d723ccbf086fa299a5513d2f5ebdbb8206cfbd2d034441db1809fdbc7afe3f70

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: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 d723ccbf086fa299a5513d2f5ebdbb8206cfbd2d034441db1809fdbc7afe3f70

(this sample)

  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/81266/

Comments