MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 18f72e9a060900f7ff195794f00e7912cfaefc7e8eb47b2e7fcd81a99da853b3. 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 7 File information Comments

SHA256 hash: 18f72e9a060900f7ff195794f00e7912cfaefc7e8eb47b2e7fcd81a99da853b3
SHA3-384 hash: f88602bdc9a46c43301fb9d76861c0aff8a460d1346af808e99c464197406b589e51549c6685ee7d274d95b635bbaa91
SHA1 hash: 88f8623bfc650fe91ca03af08b1e5907f113ef3d
MD5 hash: 0465faf127d2e6e75b4ff469361ad08a
humanhash: oklahoma-pizza-mirror-freddie
File name:common.dat
Download: download sample
Signature Efimer
File size:13'862'342 bytes
First seen:2026-05-25 23:50:29 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash c5e49de42b1165b00bd79240b8cd617d (129 x Efimer)
ssdeep 393216:Yc7kL3kAAxYKes9YVOWH0t+hPXMCHWUjXicuI3/PGTAI:Yc7kIResELZXMb8XfH/O7
TLSH T1E2D6331CE4EA24FDD7A7C038BBF116B0B079B1640A345D6A9BA8D372BC1B050DA2D45F
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
dhash icon 3071f0e8e8e0f030 (2 x Efimer)
Reporter aachum
Tags:ClickFix Efimer exe


Avatar
iamaachum
manpowererp.com/common.dat

Intelligence


File Origin
# of uploads :
1
# of downloads :
145
Origin country :
ES ES
Vendor Threat Intelligence
Malware configuration found for:
PyInstaller
Details
PyInstaller
a compiled assembly and a Python version
Malware family:
n/a
ID:
1
File name:
common.dat
Verdict:
No threats detected
Analysis date:
2026-05-25 23:20:46 UTC
Tags:
n/a

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
94.9%
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 overlay packed packed packed pyinstaller reconnaissance
Verdict:
Malicious
Labled as:
Trojan[Packed]/Win64.PyInstaller
Verdict:
Malicious
File Type:
exe x64
First seen:
2026-05-25T20:28:00Z UTC
Last seen:
2026-05-27T00:32:00Z UTC
Hits:
~10
Detections:
HEUR:Trojan.Python.Agent.gen HEUR:Trojan-PSW.Python.Agent.gen
Result
Threat name:
n/a
Detection:
malicious
Classification:
evad
Score:
76 / 100
Signature
Adds a directory exclusion to Windows Defender
Contains functionality to infect the boot sector
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:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1918339 Sample: common.dat.exe Startdate: 26/05/2026 Architecture: WINDOWS Score: 76 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 common.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 61 Contains functionality to infect the boot sector 8->61 63 Adds a directory exclusion to Windows Defender 8->63 65 Found pyInstaller with non standard icon 8->65 12 common.dat.exe 1 8->12         started        signatures5 process6 signatures7 67 Adds a directory exclusion to Windows Defender 12->67 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 69 Adds a directory exclusion to Windows Defender 15->69 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 Loading BitLocker PowerShell Module 33->59
Verdict:
inconclusive
YARA:
5 match(es)
Tags:
Executable PE (Portable Executable) PE File Layout Win 64 Exe x64
Threat name:
Win64.Dropper.Generic
Status:
Suspicious
First seen:
2026-05-25 23:20:43 UTC
File Type:
PE+ (Exe)
Extracted files:
482
AV detection:
22 of 38 (57.89%)
Threat level:
  3/5
Result
Malware family:
n/a
Score:
  8/10
Tags:
execution pyarmor pyinstaller
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Loads dropped DLL
Command and Scripting Interpreter: PowerShell
Unpacked files
SH256 hash:
18f72e9a060900f7ff195794f00e7912cfaefc7e8eb47b2e7fcd81a99da853b3
MD5 hash:
0465faf127d2e6e75b4ff469361ad08a
SHA1 hash:
88f8623bfc650fe91ca03af08b1e5907f113ef3d
Please note that we are no longer able to provide a coverage score for Virus Total.

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
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:Detect_PyInstaller
Author:Obscurity Labs LLC
Description:Detects PyInstaller compiled executables across platforms
Rule name:golang_bin_JCorn_CSC846
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:pe_detect_tls_callbacks
Rule name:PyInstaller
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
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
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 18f72e9a060900f7ff195794f00e7912cfaefc7e8eb47b2e7fcd81a99da853b3

(this sample)

  
Delivery method
Distributed via web download

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