MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b74f49047aa90d3f56619882edd333f0ed838a93a734a74b60a0639884e64618. 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 20 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b74f49047aa90d3f56619882edd333f0ed838a93a734a74b60a0639884e64618
SHA3-384 hash: abf16eac80975bc647a3e03f69ed677f24db7912aced4705a312926fdd662c837680367244681552b82a56ed408bb221
SHA1 hash: 94996f078683f237f81895714c571ced2049ad3f
MD5 hash: 50552fe7269260bc90e22d2461925696
humanhash: glucose-spaghetti-arizona-april
File name:SecuriteInfo.com.Variant.Bulz.174081.14667.1396
Download: download sample
Signature AsyncRAT
Create hunting rule
File size:241'152 bytes
First seen:2023-08-25 03:29:26 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'462 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 6144:aNFZSCbkCP30Qaxxs7jOQShh2C3aQrarhI:dChMbQC3aQrara
Threatray 3'132 similar samples on MalwareBazaar
TLSH T1F3346CDD766071EFC857C472DEA82DA4FA6134BB831B4503A42716AD9A0D89BCF580F3
TrID 28.5% (.EXE) Win64 Executable (generic) (10523/12/4)
17.8% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
13.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
12.2% (.EXE) Win32 Executable (generic) (4505/5/1)
5.6% (.EXE) Win16/32 Executable Delphi generic (2072/23)
Reporter SecuriteInfoCom
Tags:AsyncRAT exe

Intelligence

File Origin
# of uploads :
1
# of downloads :
278
Origin country :
FR FR
Vendor Threat Intelligence
Malware family:
asyncrat
Create hunting rule
ID:
1
File name:
SecuriteInfo.com.Variant.Bulz.174081.14667.1396
Verdict:
Malicious activity
Analysis date:
2023-08-25 03:43:50 UTC
Tags:
asyncrat
Link:
https://app.any.run/tasks/4b71f9f4-b6f2-4b00-a032-2ff5523b97b3

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
AsyncRat
Create hunting rule
Link:
https://www.capesandbox.com/analysis/444633/
Detection(s):
SecuriteInfo.com.Variant.Bulz.174081.14667.1396.UNOFFICIAL
Create hunting rule

PUA.Win.Packed.ConfuserEx-6391397-0
Create hunting rule

PUA.Win.Packed.ConfuserEx-6582917-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Restart of the analyzed sample
Creating a file
Sending a custom TCP request
Сreating synchronization primitives
Using the Windows Management Instrumentation requests
Running batch commands
Creating a process with a hidden window
Creating a file in the %AppData% directory
Creating a file in the %temp% directory
Launching a process
Creating a process from a recently created file
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Enabling autorun by creating a file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
confuserex masquerade net packed packed
Link:
https://www.filescan.io/uploads/64e82051b3b7d7c782cf2a51/reports/d937d5b5-8997-421f-9d75-e6b19f21f4e5/overview
Verdict:
Malicious
Labled as:
Bulz.Generic
Link:
https://www.hybrid-analysis.com/sample/b74f49047aa90d3f56619882edd333f0ed838a93a734a74b60a0639884e64618
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:
AsyncRAT
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/d56cdfe3-89dc-4052-b97f-e88f237f78c4
Result
Threat name:
AsyncRAT
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1297126
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Detected unpacking (changes PE section rights)
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
PE file contains section with special chars
PE file has nameless sections
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 AsyncRAT
Yara detected Generic Downloader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1297126 Sample: SecuriteInfo.com.Variant.Bu... Startdate: 25/08/2023 Architecture: WINDOWS Score: 100 40 wreightcethebui.sytes.net 2->40 42 palmgorohive.myddns.me 2->42 48 Malicious sample detected (through community Yara rule) 2->48 50 Antivirus / Scanner detection for submitted sample 2->50 52 Multi AV Scanner detection for submitted file 2->52 54 5 other signatures 2->54 10 SecuriteInfo.com.Variant.Bulz.174081.14667.1396.exe 1 2->10         started        13 dsci.exe 1 2->13         started        signatures3 process4 signatures5 56 Detected unpacking (changes PE section rights) 10->56 58 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 10->58 60 Uses schtasks.exe or at.exe to add and modify task schedules 10->60 68 2 other signatures 10->68 15 SecuriteInfo.com.Variant.Bulz.174081.14667.1396.exe 6 10->15         started        18 conhost.exe 10->18         started        20 schtasks.exe 1 10->20         started        62 Antivirus detection for dropped file 13->62 64 Multi AV Scanner detection for dropped file 13->64 66 Machine Learning detection for dropped file 13->66 22 dsci.exe 2 13->22         started        process6 dnsIp7 38 C:\Users\user\AppData\Roaming\dsci.exe, PE32 15->38 dropped 25 cmd.exe 1 15->25         started        27 cmd.exe 1 15->27         started        44 wreightcethebui.sytes.net 94.156.6.110, 1414, 49697, 49700 NET1-ASBG Bulgaria 22->44 46 palmgorohive.myddns.me 185.147.213.122, 4884 HWNGNL United Kingdom 22->46 file8 process9 process10 29 dsci.exe 25->29         started        32 conhost.exe 25->32         started        34 timeout.exe 1 25->34         started        signatures11 70 Injects a PE file into a foreign processes 29->70 36 dsci.exe 2 29->36         started        process12
Detection:
asyncrat
Create hunting rule
Link:
https://mwdb.cert.pl/sample/b74f49047aa90d3f56619882edd333f0ed838a93a734a74b60a0639884e64618/
Threat name:
ByteCode-MSIL.Backdoor.AsyncRAT
Create hunting rule
Status:
Suspicious
First seen:
2023-08-24 12:48:34 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
21 of 37 (56.76%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=w5husbd2vegt6vtbtcbo3uzt6dwyhcutu42kos3aubrzrbhgiyma._file
Verdict:
malicious
Label(s):
asyncrat
Create hunting rule
Similar samples:
0b8a5cbe236a7057a2904f18480b85ce9b59b891c0a1a041516248d35760744d
AsyncRAT
1299373ec40fc1f3f16957338574a9ad51a94e62220cc8c08f1ad81dee443544
AsyncRAT
16fc0cec13d88da3d0a36e4c42e733db8f1e21cafc18fd813a25cd0bc835f35a
AsyncRAT
1a9e9deb92ea9d2cd35f94b5b0cfaecfd353fe71d886aa0ee4da2d7b454427aa
AsyncRAT
2799478f81991ca4ba86ccf7a234f95199cf3743f6a1112f20666b6ce104e557
AsyncRAT
438e8f8d626ca18bb5fbd3499cad058033b199c865badba6415e362d5b8dcd49
AsyncRAT
6b5727c6490854539140bc2414d48fbed9e557ddc48b875ed80626d1f6d68988
AsyncRAT
bcf7571a4d9b25fabdc2d6120b1b2d7bd8446ea2bc3a5da1d4127954920067de
AsyncRAT
ceddcfa72226e91f7435facafe6631d1385ca4d246d242d5136ac4e9462b8611
AsyncRAT
ecb8839117d73d33390c84f7f6e02f4970156ccb2da7b48083922f60625fa8be
AsyncRAT
+ 3'122 additional samples on MalwareBazaar
Result
Malware family:
asyncrat
Create hunting rule
Score:
  10/10
Tags:
family:asyncrat botnet:eefaultp rat
Link:
https://tria.ge/reports/230825-d2jvksad7w/
Behaviour
Creates scheduled task(s)
Delays execution with timeout.exe
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
Suspicious use of SetThreadContext
Executes dropped EXE
Loads dropped DLL
Async RAT payload
AsyncRat
Malware Config
C2 Extraction:
wreightcethebui.sytes.net:1414
wreightcethebui.sytes.net:4884
palmgorohive.myddns.me:1414
palmgorohive.myddns.me:4884
Unpacked files
SH256 hash:
da4c578d7973b3a08967d3cc7f3fd00dce7be7c0ae107dc7138bd4a60fc9ae7e
MD5 hash:
07d26bb71dcc151b86431c49f9993361
SHA1 hash:
62ab307883ed6a289bdd0b9f9657a0908040ad90
Detections:
AsyncRAT
Create hunting rule
win_asyncrat_w0
Create hunting rule
Link:
https://www.unpac.me/results/1a2cdb7e-3151-4248-b98d-71f270e1aaed/
Parent samples :
beba711e481d1ded542da5be8b7b6a6dbc97b922830a2785db3b3c891fe0bad9
6c6491a4d68635154b4b1ebcb72bd6f89493c0b44ed769b9a558888244efec18
c89c718f867910692354a6559f2fc527f55f5dec0ab50b7b9001808288b70f80
d1ade67a4fa273e1ad0d6b175286baabdffac44d9ac019d5da7ec9edbe7fe1f0
3529c6b88e04480249854c8cb3cc07341685354991dc4ced4c3971e3bc4d3d2a
b74f49047aa90d3f56619882edd333f0ed838a93a734a74b60a0639884e64618
SH256 hash:
b74f49047aa90d3f56619882edd333f0ed838a93a734a74b60a0639884e64618
MD5 hash:
50552fe7269260bc90e22d2461925696
SHA1 hash:
94996f078683f237f81895714c571ced2049ad3f
Link:
https://www.unpac.me/results/1a2cdb7e-3151-4248-b98d-71f270e1aaed/
Malware family:
AsyncRAT
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/b74f49047aa9/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
iSpy Keylogger
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/b74f49047aa90d3f56619882edd333f0ed838a93a734a74b60a0639884e64618

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:AsyncRat
Create hunting rule
Author:kevoreilly, JPCERT/CC Incident Response Group
Description:AsyncRat Payload
Rule name:DebuggerCheck__RemoteAPI
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:INDICATOR_EXE_Packed_ConfuserEx
Create hunting rule
Author:ditekSHen
Description:Detects executables packed with ConfuserEx Mod
Rule name:INDICATOR_SUSPICIOUS_EXE_ASEP_REG_Reverse
Create hunting rule
Author:ditekSHen
Description:Detects file containing reversed ASEP Autorun registry keys
Rule name:malware_asyncrat
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect AsyncRat in memory
Reference:internal research
Rule name:MAL_AsnycRAT
Create hunting rule
Author:SECUINFRA Falcon Team
Description:Detects AsnycRAT based on it's config decryption routine
Rule name:MAL_AsyncRAT_Config_Decryption
Create hunting rule
Author:SECUINFRA Falcon Team
Description:Detects AsnycRAT based on it's config decryption routine
Rule name:msil_suspicious_use_of_strreverse
Create hunting rule
Author:dr4k0nia
Description:Detects mixed use of Microsoft.CSharp and VisualBasic to use StrReverse
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:NET
Create hunting rule
Author:malware-lu
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: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:SUSP_Reverse_Run_Key
Create hunting rule
Author:SECUINFRA Falcon Team
Description:Detects a Reversed Run Key
Rule name:Windows_Trojan_Asyncrat_11a11ba1
Create hunting rule
Author:Elastic Security
Rule name:win_asyncrat_j1
Create hunting rule
Author:Johannes Bader @viql
Description:detects AsyncRAT
Rule name:win_asyncrat_w0
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect AsyncRat in memory
Reference:internal research

File information

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

Web download

AsyncRAT

Executable exe b74f49047aa90d3f56619882edd333f0ed838a93a734a74b60a0639884e64618

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/2706716/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/444633/

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