MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b06b398feb7402b0dfe6173944da3413160c8608d60c89fa5311b65892135f5c. 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: 16


Intelligence 16 IOCs YARA 10 File information Comments 1
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SHA256 hash: b06b398feb7402b0dfe6173944da3413160c8608d60c89fa5311b65892135f5c
SHA3-384 hash: 3b0c11900b7258c6e2364f1943aea930f25085454a3c857f0f5b46f0ccf7e10f7b53404c7725671f909705ceab01b30b
SHA1 hash: ed69679f52a686cccc7c70955517ece277b2d21c
MD5 hash: 37e965330586a51125db2a420917db17
humanhash: equal-pennsylvania-eleven-cup
File name:37e965330586a51125db2a420917db17
Download: download sample
Signature AsyncRAT
Create hunting rule
File size:48'640 bytes
First seen:2023-07-28 04:05:17 UTC
Last seen:2023-08-24 16:49:31 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'742 x AgentTesla, 19'607 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 768:boK0GnILSC+e+biNtelDSN+iV08YbygenZHIVWICNBvEgK/JDZVc6KN:cKTyNtKDs4zb1WI8VrnkJDZVclN
Threatray 2'721 similar samples on MalwareBazaar
TLSH T1FC235D4037D88136F2FD4BB4ADF2A5418679E2676903CA5D6CC814EA2F13BC596036FE
TrID 60.4% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.8% (.SCR) Windows screen saver (13097/50/3)
8.7% (.EXE) Win64 Executable (generic) (10523/12/4)
5.4% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.1% (.EXE) Win16 NE executable (generic) (5038/12/1)
Reporter zbetcheckin
Tags:32 AsyncRAT exe

Intelligence

File Origin
# of uploads :
2
# of downloads :
296
Origin country :
FR FR
Vendor Threat Intelligence
Malware family:
asyncrat
Create hunting rule
ID:
1
File name:
37e965330586a51125db2a420917db17
Verdict:
Malicious activity
Analysis date:
2023-07-28 04:08:11 UTC
Tags:
trojan rat asyncrat remote
Link:
https://app.any.run/tasks/3ecf5c25-ffd5-4ffd-98b2-d4ffde2713b1

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/435799/
Detection(s):
Sanesecurity.Malware.29669.UNOFFICIAL
Create hunting rule

Win.Malware.Generickdz-9865912-0
Create hunting rule

Win.Malware.Enigmaprotector-9874743-0
Create hunting rule

Win.Malware.Enigmaprotector-9881027-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Running batch commands
Creating a process with a hidden window
Creating a file in the %AppData% directory
Creating a file in the %temp% directory
Creating a file
Launching a process
Creating a process from a recently created file
Sending a custom TCP request
Using the Windows Management Instrumentation requests
Unauthorized injection to a recently created process
Enabling autorun by creating a file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-debug anti-vm configsecuritypolicy evasive hacktool lolbin lolbin mpcmdrun msconfig njrat packed rat regedit replace
Link:
https://www.filescan.io/uploads/64c33eab1b48787a496fc0ae/reports/5d1dda5f-15f5-45b9-a142-96c47c966096/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/b06b398feb7402b0dfe6173944da3413160c8608d60c89fa5311b65892135f5c
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:
DCRat
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/0073cdad-a209-4e56-98f4-e411b2355913
Result
Threat name:
AsyncRAT, DcRat
Create hunting rule
Detection:
malicious
Classification:
troj
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1281585
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Found malware configuration
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
Snort IDS alert for network traffic
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AsyncRAT
Yara detected DcRat
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1281585 Sample: Hujr8SUdpj.exe Startdate: 28/07/2023 Architecture: WINDOWS Score: 100 37 Snort IDS alert for network traffic 2->37 39 Found malware configuration 2->39 41 Malicious sample detected (through community Yara rule) 2->41 43 5 other signatures 2->43 7 SecurityHealthSystray.exe 1 2 2->7         started        11 Hujr8SUdpj.exe 7 2->11         started        process3 dnsIp4 33 92.178.8.159, 49686, 8848 UNI2-ASES France 7->33 35 127.0.0.1 unknown unknown 7->35 45 Antivirus detection for dropped file 7->45 47 Multi AV Scanner detection for dropped file 7->47 49 Machine Learning detection for dropped file 7->49 29 C:\Users\user\...\SecurityHealthSystray.exe, PE32 11->29 dropped 31 C:\Users\user\AppData\...\Hujr8SUdpj.exe.log, CSV 11->31 dropped 14 cmd.exe 1 11->14         started        17 cmd.exe 1 11->17         started        file5 signatures6 process7 signatures8 51 Uses schtasks.exe or at.exe to add and modify task schedules 14->51 19 conhost.exe 14->19         started        21 schtasks.exe 1 14->21         started        23 SecurityHealthSystray.exe 3 17->23         started        25 conhost.exe 17->25         started        27 timeout.exe 1 17->27         started        process9
Detection:
dcrat
Create hunting rule
Link:
https://mwdb.cert.pl/sample/b06b398feb7402b0dfe6173944da3413160c8608d60c89fa5311b65892135f5c/
Threat name:
Win32.Backdoor.AsyncRAT
Create hunting rule
Status:
Malicious
First seen:
2023-07-24 21:32:55 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=wbvttd7loqblbx7gc44ujwrucmlazbqi2ygit6stcg3freqtl5oa._file
Verdict:
malicious
Similar samples:
0157ad636b6b3439663e7dadd6697c6c017d4fbf8fef45ab5302cfd019fcc75c
AsyncRAT
47749f50fc106280a9d25643ad73d1708610fcf61c1b83ecbfe8c64c86e340ef
AsyncRAT
703b1802d40218a99be7cad5d4661db3d988bf23bd9fcae5f3f851089e4c2c24
AsyncRAT
95a0a3662521617e193e1a64160490860af2b3ef0c9dc6d9caeae82e8b75df67
AsyncRAT
a5226c1f77fea3121d22601708268631dcd48c473d105ba68158e7010d23029b
AsyncRAT
b090e91734b2b0159a3c73193665c461c57f46d8d10e9a01f662149b98c228db
AsyncRAT
d447242a078661aa69c652929cbedbc1896b135aa50ed27427ea8c7e4d4a71be
AsyncRAT
db56ca34b934ee56d33478d16413a49d78a7671fd92c9a7a9444c48469030520
AsyncRAT
e9862583e03d49e791f0aaabb974ba4054cea75a57fec9660b59dd3342cd65de
AsyncRAT
ffe3c7b9f0b7218cec1080486f9c88bb40f003f9e2c5c50f2ec6531574d86740
AsyncRAT
+ 2'711 additional samples on MalwareBazaar
Result
Malware family:
asyncrat
Create hunting rule
Score:
  10/10
Tags:
family:asyncrat botnet:default rat
Link:
https://tria.ge/reports/230728-en3k7sbc47/
Behaviour
Creates scheduled task(s)
Delays execution with timeout.exe
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Enumerates physical storage devices
Checks computer location settings
Executes dropped EXE
Async RAT payload
AsyncRat
Malware Config
C2 Extraction:
92.178.8.159:8848
127.0.0.1:8848
Unpacked files
SH256 hash:
b06b398feb7402b0dfe6173944da3413160c8608d60c89fa5311b65892135f5c
MD5 hash:
37e965330586a51125db2a420917db17
SHA1 hash:
ed69679f52a686cccc7c70955517ece277b2d21c
Detections:
DCRat
Create hunting rule
Link:
https://www.unpac.me/results/eaed96ba-ede0-4421-8bb4-592fd22cbd7f/
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/b06b398feb7402b0dfe6173944da3413160c8608d60c89fa5311b65892135f5c

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:AcRat
Create hunting rule
Author:Nikos 'n0t' Totosis
Description:AcRat Payload (based on AsyncRat)
Rule name:INDICATOR_SUSPICIOUS_EXE_B64_Artifacts
Create hunting rule
Author:ditekSHen
Description:Detects executables embedding bas64-encoded APIs, command lines, registry keys, etc.
Rule name:INDICATOR_SUSPICIOUS_EXE_DcRatBy
Create hunting rule
Author:ditekSHen
Description:Detects executables containing the string DcRatBy
Rule name:INDICATOR_SUSPICIOUS_EXE_WMI_EnumerateVideoDevice
Create hunting rule
Author:ditekSHen
Description:Detects executables attemping to enumerate video devices using WMI
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: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:Windows_Trojan_DCRat_1aeea1ac
Create hunting rule
Author:Elastic Security

File information

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

Web download

AsyncRAT

Executable exe b06b398feb7402b0dfe6173944da3413160c8608d60c89fa5311b65892135f5c

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/2691352/
Cape
Cape
https://www.capesandbox.com/analysis/435799/

Comments


Avatar
zbet commented on 2023-07-28 04:05:18 UTC

url : hxxps://smz.sh/files/util.exe