MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4a37a7576ef4ab0f29afbc71c6c09d1073592952dc34b949af67ba1398ede00a. 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


AsyncRAT


Vendor detections: 18


Intelligence 18 IOCs YARA 19 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4a37a7576ef4ab0f29afbc71c6c09d1073592952dc34b949af67ba1398ede00a
SHA3-384 hash: b73565c8bcc701e3a1cace1eb8c237e7587f6e02ddd155e86248e6c15ffe100af6c2fc0f75883cb32c29346274b215a8
SHA1 hash: 2d3a7c6ee0bcc7585d89f1ea053260bac26ea982
MD5 hash: 9a4b22f4da5a404a63399a061bb4d874
humanhash: princess-saturn-floor-zebra
File name:17334774101c2bfa48fca56e96105624bb6ddc230a5b1fe7ef269806848ff12352bce9ce81948.dat-decoded
Download: download sample
Signature AsyncRAT
Create hunting rule
File size:36'864 bytes
First seen:2024-12-06 09:30:12 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 768:FqQq3QWIdhgbvcFASLKygbFf9Y8POMhd3fPH:FPq3QnbOvMVKyoFf9Y0OMrHH
TLSH T1B8F24C087B944226D9FD7FF169B371020674E613D913EB9D48E899EB2F277C08D113AA
TrID 67.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
9.7% (.EXE) Win64 Executable (generic) (10522/11/4)
6.0% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
4.1% (.EXE) Win32 Executable (generic) (4504/4/1)
Magika pebin
Reporter abuse_ch
Tags:AsyncRAT base64-decoded exe


Avatar
abuse_ch
Malware dropped as base64 encoded payload

Intelligence

File Origin
# of uploads :
1
# of downloads :
392
Origin country :
DE DE
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
17334774101c2bfa48fca56e96105624bb6ddc230a5b1fe7ef269806848ff12352bce9ce81948.dat-decoded
Verdict:
Malicious activity
Analysis date:
2024-12-06 10:08:03 UTC
Tags:
xworm remote
Link:
https://app.any.run/tasks/45ff6fcb-6b9a-47d8-a00e-c30f4978055c

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
Win.Packed.njRAT-10002074-1
Create hunting rule

Win.Packed.Msilzilla-10019837-0
Create hunting rule

Win.Packed.Loveletter-10023052-0
Create hunting rule

Win.Packed.Loveletter-10024677-0
Create hunting rule

Win.Packed.Msilzilla-10026193-0
Create hunting rule

ditekSHen.MALWARE.Win.Trojan.AsyncRAT.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6752c46319fba9940b4971f9
Tags:
asyncrat keylog virus word
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Сreating synchronization primitives
Creating a window
DNS request
Connection attempt
Setting a global event handler for the keyboard
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-vm asyncrat backdoor hook keylogger njrat packed packer_detected rat vbnet
Link:
https://www.filescan.io/uploads/6752c46197c7ee5cc52a12e5/reports/d276230f-4456-413d-af4b-86042654ae01/overview
Verdict:
Malicious
Labled as:
Jalapeno.Generic
Link:
https://www.hybrid-analysis.com/sample/4a37a7576ef4ab0f29afbc71c6c09d1073592952dc34b949af67ba1398ede00a
Malware family:
XWorm
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/0629ccec-3d27-45a7-9527-ab2b53eeca05
Result
Threat name:
XWorm
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1569858
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
AI detected suspicious sample
Antivirus / Scanner detection for submitted sample
C2 URLs / IPs found in malware configuration
Contains functionality to log keystrokes (.Net Source)
Found malware configuration
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines)
Sample uses string decryption to hide its real strings
Suricata IDS alerts for network traffic
Uses dynamic DNS services
Yara detected XWorm
Behaviour
Behavior Graph:
Download SVG
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/4a37a7576ef4ab0f29afbc71c6c09d1073592952dc34b949af67ba1398ede00a
Detection:
xworm
Create hunting rule
Link:
https://mwdb.cert.pl/sample/4a37a7576ef4ab0f29afbc71c6c09d1073592952dc34b949af67ba1398ede00a/
Threat name:
Win32.Exploit.Xworm
Create hunting rule
Status:
Malicious
First seen:
2024-12-05 05:50:00 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
32 of 38 (84.21%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ji32ov3o6svq6knpxry4nqe5cbzvskks3q2lssnpm65bhghn4afa._file
Verdict:
malicious
Label(s):
xworm
Create hunting rule
Similar samples:
error
AsyncRAT
Result
Malware family:
xworm
Create hunting rule
Score:
  10/10
Tags:
family:xworm rat trojan
Link:
https://tria.ge/reports/241206-lg2tnawqfk/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Detect Xworm Payload
Xworm
Xworm family
Malware Config
C2 Extraction:
serverlumen.ddns.net:3000
Verdict:
Malicious
Tags:
rat xworm Win.Packed.njRAT-10002074-1
YARA:
win_mal_XWorm MALWARE_Win_XWorm win_xworm_bytestring
Link:
https://app.threat.zone/submission/618c3c24-0296-4e0b-8c92-a95e1e6e325b
Unpacked files
SH256 hash:
4a37a7576ef4ab0f29afbc71c6c09d1073592952dc34b949af67ba1398ede00a
MD5 hash:
9a4b22f4da5a404a63399a061bb4d874
SHA1 hash:
2d3a7c6ee0bcc7585d89f1ea053260bac26ea982
Detections:
win_xworm_w0
Create hunting rule
Link:
https://www.unpac.me/results/6be69c43-771d-4531-9e0a-e4904d9bd9b0/
Malware family:
XWorm
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/4a37a7576ef4/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/4a37a7576ef4ab0f29afbc71c6c09d1073592952dc34b949af67ba1398ede00a

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: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:NETexecutableMicrosoft
Create hunting rule
Author:malware-lu
Rule name:Njrat
Create hunting rule
Author:botherder https://github.com/botherder
Description:Njrat
Rule name:pe_imphash
Create hunting rule
Rule name:RansomPyShield_Antiransomware
Create hunting rule
Author:XiAnzheng
Description:Check for Suspicious String and Import combination that Ransomware mostly abuse(can create FP)
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:Windows_Trojan_XWorm_b7d6eaa8
Create hunting rule
Author:Elastic Security
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:ditekSHen
Description:Detects 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.

1c2bfa48fca56e96105624bb6ddc230a5b1fe7ef269806848ff12352bce9ce81

AsyncRAT

Executable exe 4a37a7576ef4ab0f29afbc71c6c09d1073592952dc34b949af67ba1398ede00a

(this sample)

  
Dropped by
SHA256 1c2bfa48fca56e96105624bb6ddc230a5b1fe7ef269806848ff12352bce9ce81
  
Dropped by
MD5 154b961f01d980642c706cbf786d3171
  
URLhaus
https://urlhaus.abuse.ch/url/3332976/
  
Delivery method
Distributed via web download

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