MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 55c7da2f4d95013b4e729edb54cfe78213bbcf01aec9c70357ff3f4d36cc871f. 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: 10


Intelligence 10 IOCs YARA 17 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 55c7da2f4d95013b4e729edb54cfe78213bbcf01aec9c70357ff3f4d36cc871f
SHA3-384 hash: c031d1f51181348e2fcab6ac1b829b29d5a2419dab5222d327f79929b6005076279c16ecfd5f1c79f6d50ae6c7df3b05
SHA1 hash: f41d7e27e5f702b43ef3ab8b26a8705999393054
MD5 hash: e40cd8ca7bae16964bbe2690cc90f9a7
humanhash: maryland-may-sierra-red
File name:8g2GzeU5WvnV.exe
Download: download sample
Signature XWorm
Create hunting rule
File size:11'760'864 bytes
First seen:2023-10-03 17:18:05 UTC
Last seen:2023-10-03 17:34:55 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash e74c8ae3503a17604f2a2d84ae3389c4 (4 x AgentTesla, 2 x SnakeKeylogger, 1 x DarkCloud)
ssdeep 24576:dOMOT1vy3oOCJPMar4/oe2hVR6dxDECxpM89IjVjPy5CH:dOMI1vyJC9d0/Z4cuC+hby0H
TLSH T1E1C6239A752B6F6BFE009430D1C876F46AFC9D437AF9425FDFA21C864840ABD2198335
TrID 64.7% (.EXE) UPX compressed Win64 Executable (70117/5/12)
25.0% (.EXE) UPX compressed Win32 Executable (27066/9/6)
4.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
1.8% (.EXE) OS/2 Executable (generic) (2029/13)
1.8% (.EXE) Generic Win/DOS Executable (2002/3)
File icon (PE):PE icon
dhash icon 689669d8d8699668 (1 x XWorm)
Reporter r3dbU7z
Tags:exe xworm

Intelligence

File Origin
# of uploads :
2
# of downloads :
313
Origin country :
RU RU
Vendor Threat Intelligence
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Running batch commands
Creating a file in the %AppData% directory
Creating a file in the %temp% directory
Сreating synchronization primitives
Launching a process
Creating a file
Creating a process with a hidden window
Using the Windows Management Instrumentation requests
Creating a window
Creating a process from a recently created file
DNS request
Sending a custom TCP request
Blocking the User Account Control
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Forced shutdown of a system process
Setting a global event handler for the keyboard
Adding an exclusion to Microsoft Defender
Enabling autorun by creating a file
Unauthorized injection to a system process
Gathering data
Gathering data
Verdict:
Malicious
Labled as:
Ser.Lazy.Generic
Link:
https://www.hybrid-analysis.com/sample/55c7da2f4d95013b4e729edb54cfe78213bbcf01aec9c70357ff3f4d36cc871f
Result
Verdict:
MALICIOUS
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/2da8bfcc-e0ad-4c71-bde7-0482de0789e1
Result
Threat name:
XWorm
Create hunting rule
Detection:
malicious
Classification:
troj.adwa.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1318900
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
Adds a directory exclusion to Windows Defender
Allocates memory in foreign processes
C2 URLs / IPs found in malware configuration
Contains functionality to log keystrokes (.Net Source)
Creates multiple autostart registry keys
Disables UAC (registry)
Drops PE files to the startup folder
Drops PE files to the user root directory
Drops PE files with benign system names
Found malware configuration
Injects a PE file into a foreign processes
Malicious sample detected (through community Yara rule)
Protects its processes via BreakOnTermination flag
Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines)
Sigma detected: Powershell adding suspicious path to exclusion list
Sigma detected: Schedule system process
Tries to harvest and steal browser information (history, passwords, etc)
Uses schtasks.exe or at.exe to add and modify task schedules
Uses the Telegram API (likely for C&C communication)
Writes to foreign memory regions
Yara detected BrowserPasswordDump
Yara detected Generic Downloader
Yara detected XWorm
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1318900 Sample: 8g2GzeU5WvnV.exe Startdate: 03/10/2023 Architecture: WINDOWS Score: 100 69 Found malware configuration 2->69 71 Malicious sample detected (through community Yara rule) 2->71 73 Sigma detected: Powershell adding suspicious path to exclusion list 2->73 75 10 other signatures 2->75 8 8g2GzeU5WvnV.exe 2 6 2->8         started        12 svchost.exe 2->12         started        14 2XxIMhcVke.exe 2->14         started        16 10 other processes 2->16 process3 file4 61 C:\Users\user\AppData\Roaming\svchost.exe, PE32+ 8->61 dropped 63 C:\Users\user\AppData\Roaming\...\svchost.exe, PE32+ 8->63 dropped 87 Creates multiple autostart registry keys 8->87 89 Drops PE files to the startup folder 8->89 91 Writes to foreign memory regions 8->91 99 2 other signatures 8->99 18 CasPol.exe 17 8 8->18         started        23 cmd.exe 1 8->23         started        25 cmd.exe 1 8->25         started        33 7 other processes 8->33 93 Allocates memory in foreign processes 12->93 95 Adds a directory exclusion to Windows Defender 12->95 97 Injects a PE file into a foreign processes 12->97 27 powershell.exe 12->27         started        29 powershell.exe 12->29         started        35 6 other processes 12->35 31 conhost.exe 14->31         started        37 5 other processes 16->37 signatures5 process6 dnsIp7 65 20.229.184.215, 49797, 65350 MICROSOFT-CORP-MSN-AS-BLOCKUS United States 18->65 67 api.telegram.org 149.154.167.220, 443, 49796 TELEGRAMRU United Kingdom 18->67 59 C:\Users\Public\2XxIMhcVke.exe, PE32 18->59 dropped 77 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 18->77 79 Protects its processes via BreakOnTermination flag 18->79 81 Creates multiple autostart registry keys 18->81 85 2 other signatures 18->85 39 schtasks.exe 18->39         started        83 Uses schtasks.exe or at.exe to add and modify task schedules 23->83 41 conhost.exe 23->41         started        43 schtasks.exe 1 23->43         started        53 2 other processes 25->53 45 conhost.exe 27->45         started        47 conhost.exe 29->47         started        49 conhost.exe 33->49         started        55 2 other processes 33->55 51 conhost.exe 35->51         started        file8 signatures9 process10 process11 57 conhost.exe 39->57         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/55c7da2f4d95013b4e729edb54cfe78213bbcf01aec9c70357ff3f4d36cc871f/
Threat name:
Win64.Trojan.Nekark
Create hunting rule
Status:
Malicious
First seen:
2023-10-03 18:03:59 UTC
AV detection:
15 of 22 (68.18%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=kxd5ul2nsuatwttst3nvjt7hqij3xtybv3e4oa2x747u2nwmq4pq._file
Verdict:
malicious
Result
Malware family:
xworm
Create hunting rule
Score:
  10/10
Tags:
family:xworm evasion persistence rat trojan upx
Link:
https://tria.ge/reports/231003-vvt6eaea81/
Behaviour
Creates scheduled task(s)
Delays execution with timeout.exe
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
System policy modification
Suspicious use of SetThreadContext
Adds Run key to start application
Checks whether UAC is enabled
Drops startup file
Executes dropped EXE
Loads dropped DLL
UPX packed file
Detect Xworm Payload
UAC bypass
Xworm
Malware Config
C2 Extraction:
20.229.184.215:65350
Unpacked files
SH256 hash:
55c7da2f4d95013b4e729edb54cfe78213bbcf01aec9c70357ff3f4d36cc871f
MD5 hash:
e40cd8ca7bae16964bbe2690cc90f9a7
SHA1 hash:
f41d7e27e5f702b43ef3ab8b26a8705999393054
Link:
https://www.unpac.me/results/c59102bc-df47-4bd1-b7a9-495dfb64cc13/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/55c7da2f4d95/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/55c7da2f4d95013b4e729edb54cfe78213bbcf01aec9c70357ff3f4d36cc871f

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:INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
Create hunting rule
Author:ditekSHen
Description:Detects Windows executables referencing non-Windows User-Agents
Rule name:INDICATOR_SUSPICIOUS_EXE_TelegramChatBot
Create hunting rule
Author:ditekSHen
Description:Detects executables using Telegram Chat Bot
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:NETexecutableMicrosoft
Create hunting rule
Author:malware-lu
Rule name:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:pe_imphash
Create hunting rule
Rule name:PE_Potentially_Signed_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:shad0w_beacon_16June
Create hunting rule
Author:SBousseaden
Description:Shad0w beacon compressed
Reference:https://github.com/bats3c/shad0w
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:win_delivery_check_g0
Create hunting rule
Rule name:win_xworm_bytestring
Create hunting rule
Author:Matthew @ Embee_Research
Description:Detects bytestring present in unobfuscated xworm
Rule name:win_xworm_simple_strings
Create hunting rule
Author:Matthew @ Embee_Research
Description:Detects simple strings present in unobfuscated xworm

File information

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

Web download

XWorm

Executable exe 55c7da2f4d95013b4e729edb54cfe78213bbcf01aec9c70357ff3f4d36cc871f

(this sample)

  
Delivery method
Distributed via web download

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