MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 91621325314ba84b27d67d107dc55824bdbc3a0c2bc95dd904abf81af85d9ca4. 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: 91621325314ba84b27d67d107dc55824bdbc3a0c2bc95dd904abf81af85d9ca4
SHA3-384 hash: 5dce242e07879322554e0aea5688d6c1f628ecec029d77f3a51fac85a056fbe1113212915718c9f811013f2dcb622809
SHA1 hash: 251a73ece1b52bdcc111869c52ac425b12f2e171
MD5 hash: b577dfdff6aa26f7e6c1e716705f85e7
humanhash: helium-hamper-fruit-spaghetti
File name:PURCHASE_ORDER.exe
Download: download sample
Signature XWorm
Create hunting rule
File size:2'836'619 bytes
First seen:2024-07-11 06:29:57 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
ssdeep 6144:KQQ1cZC/gCMR6kdngNzSlv2Fg7CO8SmdUwNc7DSPXj/cFQdfIbYjvmlfOZGDL79k:jnZw3MITDSwFNNc7oXjUFQdP8f79w20
TLSH T1AAD50180F2438C1BFE5A58B9E9F135F921FDAD433AF48A1FEF405DA6294227C82544B1
TrID 44.4% (.EXE) Win64 Executable (generic) (10523/12/4)
21.3% (.EXE) Win16 NE executable (generic) (5038/12/1)
8.7% (.ICL) Windows Icons Library (generic) (2059/9)
8.5% (.EXE) OS/2 Executable (generic) (2029/13)
8.4% (.EXE) Generic Win/DOS Executable (2002/3)
Reporter lowmal3
Tags:exe xworm

Intelligence

File Origin
# of uploads :
1
# of downloads :
405
Origin country :
DE DE
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
91621325314ba84b27d67d107dc55824bdbc3a0c2bc95dd904abf81af85d9ca4.exe
Verdict:
Malicious activity
Analysis date:
2024-07-11 06:32:08 UTC
Tags:
xworm remote
Link:
https://app.any.run/tasks/5ff8358f-4955-4585-9426-0fa66c763af1

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
Win.Packed.Powershell-10032150-0
Create hunting rule

Win.Packed.Msilzilla-10032826-0
Create hunting rule

Verdict:
Malicious
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=668f7bee50cbfd4734a8a254win7simulatehigh_evasion
Tags:
Banker Encryption Execution Generic Network Dexter
Verdict:
No Threat
Threat level:
  10/10
Confidence:
100%
Tags:
masquerade overlay vbnet
Link:
https://www.filescan.io/uploads/668f7bed4c6b479391e44c64/reports/5b4c060e-09f8-4d29-8a1c-70715ac5859f/overview
Verdict:
Malicious
Labled as:
IL:Trojan.MSILZilla
Link:
https://www.hybrid-analysis.com/sample/91621325314ba84b27d67d107dc55824bdbc3a0c2bc95dd904abf81af85d9ca4
Result
Verdict:
MALICIOUS
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Malware family:
XWorm
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/70de58b4-f755-4256-8c97-6078f9b548bd
Result
Threat name:
XWorm
Create hunting rule
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1471291
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
AI detected suspicious sample
Allocates memory in foreign processes
Antivirus detection for URL or domain
Bypasses PowerShell execution policy
C2 URLs / IPs found in malware configuration
Found malware configuration
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Loading BitLocker PowerShell Module
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
Protects its processes via BreakOnTermination flag
Sample uses string decryption to hide its real strings
Sigma detected: Potentially Suspicious Malware Callback Communication
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Snort IDS alert for network traffic
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses dynamic DNS services
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected UAC Bypass using CMSTP
Yara detected XWorm
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1471291 Sample: PURCHASE_ORDER.exe Startdate: 11/07/2024 Architecture: WINDOWS Score: 100 50 rwanco.duckdns.org 2->50 58 Snort IDS alert for network traffic 2->58 60 Multi AV Scanner detection for domain / URL 2->60 62 Found malware configuration 2->62 66 15 other signatures 2->66 9 PURCHASE_ORDER.exe 3 2->9         started        12 regasm.exe 2->12         started        14 regasm.exe 2->14         started        signatures3 64 Uses dynamic DNS services 50->64 process4 signatures5 68 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 9->68 70 Writes to foreign memory regions 9->70 72 Allocates memory in foreign processes 9->72 74 Injects a PE file into a foreign processes 9->74 16 RegAsm.exe 1 5 9->16         started        21 WerFault.exe 19 16 9->21         started        23 conhost.exe 9->23         started        25 RegAsm.exe 9->25         started        27 conhost.exe 12->27         started        29 conhost.exe 14->29         started        process6 dnsIp7 48 rwanco.duckdns.org 78.159.112.22, 1515, 50004 LEASEWEB-DE-FRA-10DE Germany 16->48 46 C:\Users\user\AppData\Roaming\regasm.exe, PE32 16->46 dropped 52 Protects its processes via BreakOnTermination flag 16->52 54 Bypasses PowerShell execution policy 16->54 56 Adds a directory exclusion to Windows Defender 16->56 31 powershell.exe 23 16->31         started        34 powershell.exe 23 16->34         started        36 powershell.exe 23 16->36         started        38 WerFault.exe 16->38         started        file8 signatures9 process10 signatures11 76 Loading BitLocker PowerShell Module 31->76 40 conhost.exe 31->40         started        42 conhost.exe 34->42         started        44 conhost.exe 36->44         started        process12
Score:
88%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/91621325314ba84b27d67d107dc55824bdbc3a0c2bc95dd904abf81af85d9ca4
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/91621325314ba84b27d67d107dc55824bdbc3a0c2bc95dd904abf81af85d9ca4/
Threat name:
ByteCode-MSIL.Trojan.Leonem
Create hunting rule
Status:
Malicious
First seen:
2024-07-10 14:42:27 UTC
File Type:
PE+ (.Net Exe)
Extracted files:
1
AV detection:
26 of 38 (68.42%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=sfrbgjjrjouewj6wpuih3rkyes63yoqmfpev3wievp4bv6c5tssa._file
Verdict:
malicious
Result
Malware family:
xworm
Create hunting rule
Score:
  10/10
Tags:
family:xworm execution persistence rat trojan
Link:
https://tria.ge/reports/240711-g9glzawblb/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Adds Run key to start application
Command and Scripting Interpreter: PowerShell
Detect Xworm Payload
Xworm
Malware Config
C2 Extraction:
rwanco.duckdns.org:1515
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/90ac9ec8-abb4-4f79-a820-a8d9b0b597da
Unpacked files
SH256 hash:
91621325314ba84b27d67d107dc55824bdbc3a0c2bc95dd904abf81af85d9ca4
MD5 hash:
b577dfdff6aa26f7e6c1e716705f85e7
SHA1 hash:
251a73ece1b52bdcc111869c52ac425b12f2e171
Link:
https://www.unpac.me/results/b001f8c4-03e9-444f-b3a1-c9333ba72384/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/91621325314b/report/overview.html
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:NET
Create hunting rule
Author:malware-lu
Rule name:pe_no_import_table
Create hunting rule
Description:Detect pe file that no import table

File information

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

Malspam

XWorm

Executable exe 91621325314ba84b27d67d107dc55824bdbc3a0c2bc95dd904abf81af85d9ca4

(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

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