MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 9c99208882baac0d4835a4b33405b4d3dd2eea6291afba7d90a907c1a0ac8f7c. 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: 18


Intelligence 18 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 9c99208882baac0d4835a4b33405b4d3dd2eea6291afba7d90a907c1a0ac8f7c
SHA3-384 hash: aaf1cb478c175eb5e42c2061a6bf43da590a4f14419077516cb1540e48d91766a1dd3fc13823090824bfe0e51b4d7d88
SHA1 hash: 7eb177450091356720530ac42683dad5a1c6aa13
MD5 hash: 43a324928a4d0fa6bb446c133e1eac7f
humanhash: don-eighteen-mango-ack
File name:checkerrs.exe
Download: download sample
Signature XWorm
Create hunting rule
File size:9'552'896 bytes
First seen:2025-03-23 18:59:45 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'609 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 196608:si2kWRb2b0nLoPdAV+lhsH/72PwZ0VSRuY+TdfoguNsuykTW:GkWRb2bLZlhsHj0ScYydFuyk
TLSH T1FFA63399B38918B7E32FE532C2C857350A6F78261D61EC549CC887FAF05D604B893BE5
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 BastianHein
Tags:exe xworm

Intelligence

File Origin
# of uploads :
1
# of downloads :
410
Origin country :
CL CL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
checkerrs.exe
Verdict:
Malicious activity
Analysis date:
2025-03-23 19:04:56 UTC
Tags:
python evasion xworm pyinstaller
Link:
https://app.any.run/tasks/b9f55a07-694c-462e-9bfe-d958a2722bb5

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=67e196a2bb84e066269e8eb6
Tags:
asyncrat vmdetect
Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Creating a file in the %AppData% directory
Creating a process from a recently created file
Creating a file
Creating a file in the %temp% subdirectories
Creating a window
Using the Windows Management Instrumentation requests
DNS request
Connection attempt
Sending an HTTP GET request
Delayed reading of the file
Creating a process with a hidden window
Running batch commands
Launching a process
Unauthorized injection to a recently created process
Adding an exclusion to Microsoft Defender
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
obfuscated obfuscated packed packed packer_detected vbnet
Link:
https://www.filescan.io/uploads/67e05a3d195c2ecf47efae3a/reports/b173514f-a4eb-487d-a703-4d1d7c09c6cc/overview
Verdict:
Malicious
Labled as:
Jalapeno.Generic
Link:
https://www.hybrid-analysis.com/sample/9c99208882baac0d4835a4b33405b4d3dd2eea6291afba7d90a907c1a0ac8f7c
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/99aa612b-2b60-4b89-aade-02a225530160
Result
Threat name:
XWorm
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1646278
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
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
Bypasses PowerShell execution policy
C2 URLs / IPs found in malware configuration
Check if machine is in data center or colocation facility
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Found malware configuration
Found pyInstaller with non standard icon
Joe Sandbox ML detected suspicious sample
Loading BitLocker PowerShell Module
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Protects its processes via BreakOnTermination flag
Sample uses string decryption to hide its real strings
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected XWorm
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1646278 Sample: checkerrs.exe Startdate: 23/03/2025 Architecture: WINDOWS Score: 100 68 language-lose.gl.at.ply.gg 2->68 70 ip-api.com 2->70 78 Found malware configuration 2->78 80 Malicious sample detected (through community Yara rule) 2->80 82 Antivirus detection for URL or domain 2->82 84 10 other signatures 2->84 9 checkerrs.exe 4 2->9         started        13 svchost.exe 2->13         started        16 generator.exe 2->16         started        18 3 other processes 2->18 signatures3 process4 dnsIp5 62 C:\Users\user\AppData\Roaming\generator.exe, PE32 9->62 dropped 64 C:\Users\user\AppData\Roaming\checker.exe, PE32+ 9->64 dropped 66 C:\Users\user\AppData\...\checkerrs.exe.log, CSV 9->66 dropped 96 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 9->96 20 generator.exe 15 5 9->20         started        24 checker.exe 39 9->24         started        76 127.0.0.1 unknown unknown 13->76 file6 signatures7 process8 dnsIp9 72 language-lose.gl.at.ply.gg 147.185.221.26, 64760 SALSGIVERUS United States 20->72 74 ip-api.com 208.95.112.1, 49682, 80 TUT-ASUS United States 20->74 86 Protects its processes via BreakOnTermination flag 20->86 88 Bypasses PowerShell execution policy 20->88 90 Uses schtasks.exe or at.exe to add and modify task schedules 20->90 94 2 other signatures 20->94 27 powershell.exe 23 20->27         started        30 powershell.exe 23 20->30         started        32 powershell.exe 20->32         started        38 2 other processes 20->38 54 C:\Users\...\backend_c.cp313-win_amd64.pyd, PE32+ 24->54 dropped 56 C:\Users\user\...\_cffi.cp313-win_amd64.pyd, PE32+ 24->56 dropped 58 C:\Users\user\AppData\...\unicodedata.pyd, PE32+ 24->58 dropped 60 20 other files (none is malicious) 24->60 dropped 92 Found pyInstaller with non standard icon 24->92 34 checker.exe 1 24->34         started        36 conhost.exe 24->36         started        file10 signatures11 process12 signatures13 98 Loading BitLocker PowerShell Module 27->98 40 conhost.exe 27->40         started        42 conhost.exe 30->42         started        44 conhost.exe 32->44         started        46 cmd.exe 1 34->46         started        48 cmd.exe 1 34->48         started        50 conhost.exe 38->50         started        52 conhost.exe 38->52         started        process14
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/9c99208882baac0d4835a4b33405b4d3dd2eea6291afba7d90a907c1a0ac8f7c
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/9c99208882baac0d4835a4b33405b4d3dd2eea6291afba7d90a907c1a0ac8f7c/
Threat name:
ByteCode-MSIL.Spyware.AsyncRAT
Create hunting rule
Status:
Malicious
First seen:
2025-03-23 19:00:13 UTC
File Type:
PE (.Net Exe)
Extracted files:
4
AV detection:
19 of 24 (79.17%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=tsmsbcecxkwa2sbvusztibnu2pos52tcsgx3u7mqved4difmr56a._file
Verdict:
malicious
Label(s):
xworm
Create hunting rule
Similar samples:
error
XWorm
Result
Malware family:
xworm
Create hunting rule
Score:
  10/10
Tags:
family:xworm pyinstaller rat trojan
Link:
https://tria.ge/reports/250323-xnqkra1ye1/
Behaviour
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Detects Pyinstaller
Enumerates physical storage devices
Looks up external IP address via web service
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Detect Xworm Payload
Xworm
Xworm family
Malware Config
C2 Extraction:
language-lose.gl.at.ply.gg:64760
Verdict:
Malicious
Tags:
external_ip_lookup
YARA:
n/a
Link:
https://app.threat.zone/submission/5f1a74ae-218b-4a09-958f-c0408ea3895e
Unpacked files
SH256 hash:
9c99208882baac0d4835a4b33405b4d3dd2eea6291afba7d90a907c1a0ac8f7c
MD5 hash:
43a324928a4d0fa6bb446c133e1eac7f
SHA1 hash:
7eb177450091356720530ac42683dad5a1c6aa13
Link:
https://www.unpac.me/results/f618ee94-de24-4b4a-8a8c-07da1aa017a7/
SH256 hash:
6014c7be1d04f7ccdd16464ae8d0031bb4d8d1b23b9945ce7541976ca7ed9067
MD5 hash:
c0f0a873dd69f8f8559164d7ed35aeaf
SHA1 hash:
57a3027d651cda68845b8e0afcf54b841d5a44fe
Detections:
win_xworm_w0
Create hunting rule
win_xworm_bytestring
Create hunting rule
win_mal_XWorm
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
Create hunting rule
MALWARE_Win_AsyncRAT
Create hunting rule
MALWARE_Win_XWorm
Create hunting rule
Link:
https://www.unpac.me/results/f618ee94-de24-4b4a-8a8c-07da1aa017a7/
Parent samples :
9c99208882baac0d4835a4b33405b4d3dd2eea6291afba7d90a907c1a0ac8f7c
6014c7be1d04f7ccdd16464ae8d0031bb4d8d1b23b9945ce7541976ca7ed9067
Malware family:
XWorm
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/9c99208882ba/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/9c99208882baac0d4835a4b33405b4d3dd2eea6291afba7d90a907c1a0ac8f7c

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: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: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)

File information

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

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 (HIGH_ENTROPY_VA)high

Comments