MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 99351a410e1b6ac260947ffb4b9d3c1716d48ebd369c38e0082d2bfca3354a95. 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: 14


Intelligence 14 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 99351a410e1b6ac260947ffb4b9d3c1716d48ebd369c38e0082d2bfca3354a95
SHA3-384 hash: cc734af2fa3f819d2d4711ca4fbe12e10461cb2e65bf58bae6d1d762fa735be687bd01a4789b71c53d27f083d3492e47
SHA1 hash: 03bdc005dd7aedbf525c01ceb4ee7184ea7be6ff
MD5 hash: 05c703183a5419aae6dd2367197f5c14
humanhash: florida-mississippi-march-robin
File name:DHL Shipment Notification.exe
Download: download sample
Signature XWorm
Create hunting rule
File size:100'352 bytes
First seen:2025-03-19 23:25:36 UTC
Last seen:2025-03-20 00:55:11 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 1536:AezzmqJZ6q4EVmi/MGrOhAYQcGdixqLUM4qHBRT3sgROg7M:pzZ+o3jLUMth5sgROg7M
TLSH T184A3C51FBA4BC5B1CA541F3EEDDBC90013A8F481BE43D71E398A271A58477BB894121B
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10522/11/4)
6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.3% (.EXE) Win32 Executable (generic) (4504/4/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Magika pebin
Reporter threatcat_ch
Tags:exe xworm

Intelligence

File Origin
# of uploads :
2
# of downloads :
474
Origin country :
CH CH
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
DHL Shipment Notification.exe
Verdict:
Malicious activity
Analysis date:
2025-03-19 23:40:00 UTC
Tags:
opendir purecrypter netreactor remote xworm
Link:
https://app.any.run/tasks/bca1f38f-d940-4e78-9ff9-27cac31c4e2e

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Clean
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=67db5293115e7b48b48ee23a
Tags:
n/a
Result
Verdict:
Clean
Maliciousness:

Behaviour
Searching for the window
Сreating synchronization primitives
DNS request
Connection attempt
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
masquerade net_reactor obfuscated packed
Link:
https://www.filescan.io/uploads/67db529597863754dc6fc5b2/reports/f9471a10-fbab-4b78-a4a9-158c281613f2/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/99351a410e1b6ac260947ffb4b9d3c1716d48ebd369c38e0082d2bfca3354a95
Result
Verdict:
UNKNOWN
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
Link:
https://analyze.intezer.com/analyses/1ca7db22-7ab3-4727-95b3-9ea1735d2415
Result
Threat name:
XWorm
Create hunting rule
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1643581
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
.NET source code references suspicious native API functions
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Drops VBS files to the startup folder
Found malware configuration
Injects a PE file into a foreign processes
Joe Sandbox ML detected suspicious sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sample uses string decryption to hide its real strings
Sigma detected: Drops script at startup location
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Yara detected AntiVM3
Yara detected Costura Assembly Loader
Yara detected XWorm
Behaviour
Behavior Graph:
Download SVG
Score:
97%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/99351a410e1b6ac260947ffb4b9d3c1716d48ebd369c38e0082d2bfca3354a95
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/99351a410e1b6ac260947ffb4b9d3c1716d48ebd369c38e0082d2bfca3354a95/
Threat name:
Win32.Trojan.Leonem
Create hunting rule
Status:
Malicious
First seen:
2025-03-19 22:37:21 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
18 of 24 (75.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=te2ruqiodnvmeyeup75uxhj4c4lnjdv5g2odryaifuv7zizvjkkq._file
Verdict:
malicious
Label(s):
sorano
Create hunting rule
Similar samples:
error
XWorm
Result
Malware family:
xworm
Create hunting rule
Score:
  10/10
Tags:
family:xworm discovery rat trojan
Link:
https://tria.ge/reports/250319-3ev2rsw1ct/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Checks computer location settings
Drops startup file
Executes dropped EXE
Detect Xworm Payload
Suspicious use of NtCreateUserProcessOtherParentProcess
Xworm
Xworm family
Malware Config
C2 Extraction:
bin12.ydns.eu:4050
bin14.ydns.eu:4050
kingsbkup1.ydns.eu:4050
smfcs1.ydns.eu:4050
smfcs3.ydns.eu:4050
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/5e851e3b-83d0-45ef-92cb-3fc52e4c890f
Unpacked files
SH256 hash:
99351a410e1b6ac260947ffb4b9d3c1716d48ebd369c38e0082d2bfca3354a95
MD5 hash:
05c703183a5419aae6dd2367197f5c14
SHA1 hash:
03bdc005dd7aedbf525c01ceb4ee7184ea7be6ff
Detections:
PureCrypter_Stage1
Create hunting rule
Link:
https://www.unpac.me/results/0456174e-fbf3-4d72-b2db-2ffcc22d76f0/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/99351a410e1b/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/99351a410e1b6ac260947ffb4b9d3c1716d48ebd369c38e0082d2bfca3354a95

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:NET
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

File information

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

Malspam

XWorm

Executable exe 99351a410e1b6ac260947ffb4b9d3c1716d48ebd369c38e0082d2bfca3354a95

(this sample)

  
Delivery method
Distributed via e-mail attachment

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (GUARD_CF)high

Comments