MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a8b0e39c0d40dda93ccc0c817b6b924804b25b5ac343b2db2e1fb6658743af9d. 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


XWorm


Vendor detections: 9


Intelligence 9 IOCs 1 YARA 26 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a8b0e39c0d40dda93ccc0c817b6b924804b25b5ac343b2db2e1fb6658743af9d
SHA3-384 hash: 56040f8f8eb011ca86a86bd5a364317d30bdbaa18b2731a6091a3856c6e7c6f05db845ac4fac92820ab8dc6263256419
SHA1 hash: df27032fc783dcaaefb35e60a028ae2f4c2a4340
MD5 hash: bcf38baf0810096a64d1904911f8a923
humanhash: hot-quiet-hot-berlin
File name:ACKNOWLEDGEMENT PENDING � PURCHASE ORDER.zip
Download: download sample
Signature XWorm
Create hunting rule
File size:438'703 bytes
First seen:2025-08-29 06:38:38 UTC
Last seen:Never
File type: zip
MIME type:application/zip
ssdeep 6144:+XYn+9RVF0nRgsWivZdFlq+zNfPLh/c1jJ0+5VS0sETFHXBH4GSzws1J+hkpSMrw:+XYn+9R2gGlq+z5F41O4RYGSvWfpT
TLSH T12B942306BCA7B0F8DB8E4253406416A558D2BF8A061FC59F798CD264EE89DF401D1EEE
Magika zip
Reporter cocaman
Tags:xworm zip


Avatar
cocaman
Malicious email (T1566.001)
From: "Siti Nurain <mark@innovativemolecularadvancements.eu>" (likely spoofed)
Received: "from postfix-inbound-v2-6.inbound.mailchannels.net (inbound-egress-8.mailchannels.net [23.83.223.254]) "
Date: "28 Aug 2025 17:45:18 -0700"
Subject: "=?UTF-8?B?UkU6IEFDS05PV0xFREdFTUVOVCBQRU5ESU5HICDigJMgUFVSQ0hBU0UgT1JERVI=?="
Attachment: "ACKNOWLEDGEMENT PENDING � PURCHASE ORDER.zip"

Indicators Of Compromise (IOCs)

Below is a list of indicators of compromise (IOCs) associated with this malware samples.

IOCThreatFox Reference
185.157.162.101:1111 https://threatfox.abuse.ch/ioc/1574160/

Intelligence

File Origin
# of uploads :
1
# of downloads :
66
Origin country :
CH CH
File Archive Information

This file archive contains 1 file(s), sorted by their relevance:

File name:o0J2gpevUhKJ4KQ.bat
File size:486'400 bytes
SHA256 hash: cc4eec67af1c944dec3427e604e4e098cce364ed1138469d51b264687ade358f
MD5 hash: b580f1214e3ff3d37eddc5b37e6ccf70
MIME type:application/x-dosexec
Signature XWorm
Vendor Threat Intelligence
Verdict:
Clean
Score:
89.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=68b14b2d3e988eb6ab82ea14
Tags:
n/a
Result
Verdict:
Malicious
File Type:
PE File
Link:
https://app.docguard.net/a8b0e39c0d40dda93ccc0c817b6b924804b25b5ac343b2db2e1fb6658743af9d/results/dashboard
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
lolbin packed tracker vbnet
Link:
https://www.filescan.io/uploads/68b14b2e1c81c34281d7a894/reports/fce5d92d-516e-4c49-b127-8815cebb3c26/overview
Verdict:
Malicious
Labled as:
Malware.U.XWorm
Link:
https://www.hybrid-analysis.com/sample/a8b0e39c0d40dda93ccc0c817b6b924804b25b5ac343b2db2e1fb6658743af9d
Result
Verdict:
UNKNOWN
Link:
https://labs.inquest.net/dfi/sha256/a8b0e39c0d40dda93ccc0c817b6b924804b25b5ac343b2db2e1fb6658743af9d
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Verdict:
Malicious
File Type:
zip
First seen:
2025-08-28T21:18:00Z UTC
Last seen:
2025-08-28T21:18:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/a8b0e39c0d40dda93ccc0c817b6b924804b25b5ac343b2db2e1fb6658743af9d/results?tab=lookup
Score:
100%
Verdict:
Malware
File Type:
ARCHIVE
Link:
https://malprob.io/report/a8b0e39c0d40dda93ccc0c817b6b924804b25b5ac343b2db2e1fb6658743af9d
Gathering data
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a8b0e39c0d40dda93ccc0c817b6b924804b25b5ac343b2db2e1fb6658743af9d/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2025-08-29 03:50:39 UTC
File Type:
Binary (Archive)
Extracted files:
8
AV detection:
25 of 38 (65.79%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=vcyohhanido2spgmbsaxw24sjaclew22ynb3fwzod63glb2dv6oq._file
Result
Malware family:
xworm
Create hunting rule
Score:
  10/10
Tags:
family:xworm discovery rat trojan
Link:
https://tria.ge/reports/250829-hpkcssgp3x/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Detect Xworm Payload
Xworm
Xworm family
Malware Config
C2 Extraction:
duskesthostplug.duckdns.org:1111
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.20
Link:
https://yomi.yoroi.company/submissions/a8b0e39c0d40dda93ccc0c817b6b924804b25b5ac343b2db2e1fb6658743af9d

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:ByteCode_MSIL_Backdoor_AsyncRAT
Create hunting rule
Author:ReversingLabs
Description:Yara rule that detects AsyncRAT backdoor.
Rule name:CP_AllMal_Detector
Create hunting rule
Author:DiegoAnalytics
Description:CrossPlatform All Malwares Detector: Detect PE, ELF, Mach-O, scripts, archives; overlay, obfuscation, encryption, spoofing, hiding, high entropy, network communication
Rule name:Detect_PowerShell_Obfuscation
Create hunting rule
Author:daniyyell
Description:Detects obfuscated PowerShell commands commonly used in malicious scripts.
Rule name:INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
Create hunting rule
Author:ditekSHen
Description:Detects Windows executables referencing non-Windows User-Agents
Rule name:MALWARE_Win_AsyncRAT
Create hunting rule
Author:ditekSHen
Description:Detects AsyncRAT
Rule name:MALWARE_Win_XWorm
Create hunting rule
Author:ditekSHen
Description:Detects XWorm
Rule name:Multifamily_RAT_Detection
Create hunting rule
Author:Lucas Acha (http://www.lukeacha.com)
Description:Generic Detection for multiple RAT families, PUPs, Packers and suspicious executables
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:NETexecutableMicrosoft
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:SUSP_DOTNET_PE_List_AV
Create hunting rule
Author:SECUINFRA Falcon Team
Description:Detecs .NET Binary that lists installed AVs
Rule name:Sus_CMD_Powershell_Usage
Create hunting rule
Author:XiAnzheng
Description:May Contain(Obfuscated or no) Powershell or CMD Command that can be abused by threat actor(can create FP)
Rule name:Sus_Obf_Enc_Spoof_Hide_PE
Create hunting rule
Author:XiAnzheng
Description:Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)
Rule name:win32_dotnet_form_obfuscate
Create hunting rule
Author:Reedus0
Description:Rule for detecting .NET form obfuscate malware
Rule name:win32_xworm
Create hunting rule
Author:Reedus0
Description:Rule for detecting XWorm malware
Rule name:win_xworm_bytestring
Create hunting rule
Author:Matthew @ Embee_Research
Description:Detects bytestring present in unobfuscated xworm
Rule name:win_xworm_w0
Create hunting rule
Author:jeFF0Falltrades
Description:Detects win.xworm.
Rule name:xworm
Create hunting rule
Author:jeFF0Falltrades
Rule name:xworm_kingrat
Create hunting rule
Author:jeFF0Falltrades

File information

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

Malspam

XWorm

zip a8b0e39c0d40dda93ccc0c817b6b924804b25b5ac343b2db2e1fb6658743af9d

(this sample)

XWorm

Executable exe cc4eec67af1c944dec3427e604e4e098cce364ed1138469d51b264687ade358f

  
Delivery method
Distributed via e-mail attachment
  
Dropping
SHA256 cc4eec67af1c944dec3427e604e4e098cce364ed1138469d51b264687ade358f
  
Dropping
XWorm
  
Dropping
MD5 b580f1214e3ff3d37eddc5b37e6ccf70

Comments