MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3b1a7f4151f967d6574f3c26de9eba9745123e19b61bfb6d5494c2a777da8a21. 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


DCRat


Vendor detections: 12


Intelligence 12 IOCs YARA 19 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 3b1a7f4151f967d6574f3c26de9eba9745123e19b61bfb6d5494c2a777da8a21
SHA3-384 hash: 7c2cf4745d6c8b5b71e514ac8ab14480d71511611f3890b85de9f1fd5bd46031d4c6048b9f8d7b133e8d33575e61c40f
SHA1 hash: f52db9117f4f98dc55947b317741f9bf1f42492a
MD5 hash: 1107c547ccf9fb42c9c64e58ac31739c
humanhash: apart-kansas-football-oklahoma
File name:cmd.bat
Download: download sample
Signature DCRat
Create hunting rule
File size:937 bytes
First seen:2025-04-08 16:41:39 UTC
Last seen:Never
File type:Batch (bat) bat
MIME type:text/x-msdos-batch
ssdeep 24:wKXZlqmb6xb3OeEOWM9bFz8GzMKCb3jhaILXIVnRcXsHbW5YAnv4I:C5x7p7ax8HxAT
TLSH T1AE11ED5E10FF501B96F63BEB0C1014629A3FC2D9A318F6FC68BA0152E71C48FC55880E
Magika batch
Reporter JAMESWT_WT
Tags:92-255-85-66 bat booking ClickFix DCRat FakeCaptcha Spam-ITA

Intelligence

File Origin
# of uploads :
1
# of downloads :
97
Origin country :
IT IT
Vendor Threat Intelligence
Malware family:
asyncrat
Create hunting rule
ID:
1
File name:
http://bookviewmain24.com/
Verdict:
Malicious activity
Analysis date:
2025-04-08 16:38:04 UTC
Tags:
loader rat asyncrat remote
Link:
https://app.any.run/tasks/0c365c4b-b2a8-471f-afba-0505715723a5

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
92.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=67f552aea695a0cd1fad20e4
Tags:
trojan shell sage
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Launching a process
Сreating synchronization primitives
Creating a file in the %temp% subdirectories
Creating a process with a hidden window
Creating a file
Using the Windows Management Instrumentation requests
Connection attempt to an infection source
Sending a TCP request to an infection source
Sending an HTTP GET request to an infection source
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
powershell
Link:
https://www.filescan.io/uploads/67f551eb40adfb5162bc7ef5/reports/9406861e-2154-4a49-b0ec-eba5970ad88b/overview
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/3b1a7f4151f967d6574f3c26de9eba9745123e19b61bfb6d5494c2a777da8a21
Result
Threat name:
AsyncRAT, DcRat
Create hunting rule
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1659774
Signature
Antivirus detection for dropped file
Antivirus detection for URL or domain
Compiles code for process injection (via .Net compiler)
Found malware configuration
Injects a PE file into a foreign processes
Joe Sandbox ML detected suspicious sample
Malicious sample detected (through community Yara rule)
Sample uses string decryption to hide its real strings
Sigma detected: Dot net compiler compiles file from suspicious location
Sigma detected: PowerShell Download and Execution Cradles
Suricata IDS alerts for network traffic
Writes to foreign memory regions
Yara detected AsyncRAT
Yara detected Costura Assembly Loader
Yara detected DcRat
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1659774 Sample: cmd.bat Startdate: 08/04/2025 Architecture: WINDOWS Score: 100 38 pki-goog.l.google.com 2->38 40 c.pki.goog 2->40 52 Suricata IDS alerts for network traffic 2->52 54 Found malware configuration 2->54 56 Malicious sample detected (through community Yara rule) 2->56 58 9 other signatures 2->58 9 cmd.exe 1 2->9         started        11 svchost.exe 1 1 2->11         started        signatures3 process4 dnsIp5 14 powershell.exe 14 23 9->14         started        19 conhost.exe 9->19         started        42 127.0.0.1 unknown unknown 11->42 process6 dnsIp7 44 92.255.85.66, 1414, 49684, 49694 SOVTEL-ASRU Russian Federation 14->44 34 C:\Users\user\AppData\...\bkhhewwv.cmdline, Unicode 14->34 dropped 36 C:\Users\user\AppData\Local\...\bkhhewwv.0.cs, C++ 14->36 dropped 46 Writes to foreign memory regions 14->46 48 Compiles code for process injection (via .Net compiler) 14->48 50 Injects a PE file into a foreign processes 14->50 21 csc.exe 3 14->21         started        24 MSBuild.exe 2 14->24         started        26 MSBuild.exe 14->26         started        28 2 other processes 14->28 file8 signatures9 process10 file11 32 C:\Users\user\AppData\Local\...\bkhhewwv.dll, PE32 21->32 dropped 30 cvtres.exe 1 21->30         started        process12
Score:
1%
Verdict:
Benign
File Type:
SCRIPT
Link:
https://malprob.io/report/3b1a7f4151f967d6574f3c26de9eba9745123e19b61bfb6d5494c2a777da8a21
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/3b1a7f4151f967d6574f3c26de9eba9745123e19b61bfb6d5494c2a777da8a21/
Threat name:
Script-BAT.Downloader.FakeCaptcha
Create hunting rule
Status:
Malicious
First seen:
2025-04-08 16:42:16 UTC
File Type:
Text (Batch)
AV detection:
6 of 24 (25.00%)
Threat level:
  3/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=hmnh6qkr7ft5mv2phqtn5hv2s5crepqzwyn7w3kustbko562riqq._file
Verdict:
malicious
Label(s):
asyncrat
Create hunting rule
boratrat
Create hunting rule
Similar samples:
error
DCRat
Result
Malware family:
asyncrat
Create hunting rule
Score:
  10/10
Tags:
family:asyncrat botnet:default discovery execution rat
Link:
https://tria.ge/reports/250408-t7sbxawxfs/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Command and Scripting Interpreter: PowerShell
Blocklisted process makes network request
Downloads MZ/PE file
AsyncRat
Asyncrat family
Malware Config
C2 Extraction:
92.255.85.66:1414
Dropper Extraction:
http://92.255.85.66/a.mp4
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/3b1a7f4151f967d6574f3c26de9eba9745123e19b61bfb6d5494c2a777da8a21

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:dcrat
Create hunting rule
Author:jeFF0Falltrades
Rule name:dcrat_kingrat
Create hunting rule
Author:jeFF0Falltrades
Rule name:dcrat_rkp
Create hunting rule
Author:jeFF0Falltrades
Description:Detects DCRat payloads
Rule name:golang_bin_JCorn_CSC846
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:INDICATOR_EXE_Packed_Fody
Create hunting rule
Author:ditekSHen
Description:Detects executables manipulated with Fody
Rule name:INDICATOR_SUSPICIOUS_EXE_WMI_EnumerateVideoDevice
Create hunting rule
Author:ditekSHen
Description:Detects executables attemping to enumerate video devices using WMI
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:obfuscated_BAT
Create hunting rule
Author:@warz_s
Description:Identifies obfuscated BAT files
Reference:https://github.com/secwarz/YaraRules
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)
Rule name:ThreadControl__Context
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:Windows_Generic_Threat_ce98c4bc
Create hunting rule
Author:Elastic Security
Rule name:win_asyncrat_unobfuscated
Create hunting rule
Author:Matthew @ Embee_Research
Description:Detects strings present in unobfuscated AsyncRat Samples. Rule may also pick up on other Asyncrat-derived malware (Dcrat/venom etc)

File information

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

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