MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c6b2f283b8d973c15c02fa53a81775d61317ac6e863eb2ccff430fddcc512eb1. 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: 15


Intelligence 15 IOCs YARA 28 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: c6b2f283b8d973c15c02fa53a81775d61317ac6e863eb2ccff430fddcc512eb1
SHA3-384 hash: 02725549b4e98c044e7b914c146550718a8e574ba5e76235c583013407070745de2f5baaf7cf73817a44412bf092d5ee
SHA1 hash: afb79ae0fe45fb271976ba79e792cbcbf61265b2
MD5 hash: 7a961e86d175526cdbd91bb7bf1c632a
humanhash: summer-venus-ack-juliet
File name:C6B2F283B8D973C15C02FA53A81775D61317AC6E863EB2CCFF430FDDCC512EB1.exe
Download: download sample
Signature AsyncRAT
Create hunting rule
File size:46'082 bytes
First seen:2024-07-24 21:20:55 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'661 x AgentTesla, 19'474 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 768:tusqJT0hdaWUn7yqmo2qR8KjPGaaqPIyzjbFgX3iohqkZGcW4TjAfmBDZff+j:tusqJTa02LKTITy3bCXSkqQGDNodff+j
Threatray 2'935 similar samples on MalwareBazaar
TLSH T169232A003BE88227F2BE5FB8ACF25145457AF6A72603D64D1CC451DB5613FC68A42AFE
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 Anonymous
Tags:AsyncRAT exe


Avatar
Anonymous
this malware sample is very nasty!

Intelligence

File Origin
# of uploads :
1
# of downloads :
323
Origin country :
CN CN
Vendor Threat Intelligence
Detection(s):
Win.Packed.Razy-9625918-0
Create hunting rule

Win.Packed.AsyncRAT-9856570-1
Create hunting rule

Win.Packed.AsyncRAT-9861056-1
Create hunting rule

Verdict:
Malicious
Score:
91.7%
Link:
https://cyber-fortress.com/docs/result/index.php?id=66a17043ae21d7902eafcc90
Tags:
Encryption
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Сreating synchronization primitives
Connection attempt
Creating a window
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-vm asyncrat lolbin njrat overlay reg schtasks vbnet
Link:
https://www.filescan.io/uploads/66a170404c5c17942a7d16f6/reports/d1744520-30bc-4293-9f5e-efca9aa502f0/overview
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.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/3b4dd7ce-03a2-4867-872d-62e729f6cbfb
Result
Threat name:
AsyncRAT
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
88 / 100
Link:
https://www.joesandbox.com/analysis/1480782
Signature
AI detected suspicious sample
Antivirus / Scanner detection for submitted sample
Found malware configuration
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Yara detected AsyncRAT
Yara detected Generic Downloader
Behaviour
Behavior Graph:
Download SVG
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/c6b2f283b8d973c15c02fa53a81775d61317ac6e863eb2ccff430fddcc512eb1
Detection:
asyncrat
Create hunting rule
Link:
https://mwdb.cert.pl/sample/c6b2f283b8d973c15c02fa53a81775d61317ac6e863eb2ccff430fddcc512eb1/
Threat name:
ByteCode-MSIL.Backdoor.AsyncRat
Create hunting rule
Status:
Malicious
First seen:
2024-07-24 21:21:07 UTC
File Type:
PE (.Net Exe)
Extracted files:
2
AV detection:
23 of 24 (95.83%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=y2zpfa5y3fz4cxac7jj2qf3v2yjrpldoqy7lfth7imh53tcrf2yq._file
Verdict:
malicious
Similar samples:
06964dd3189bad530f3e1f1b866ccd300672eac8d3889ff327724927770b0389
AsyncRAT
512eae984c0fd479fdcd2f73253fc52adeed18d104dff390b5b9563b3ca8dff5
AsyncRAT
51f3f7d8ac847527e0652b7841b3f37844b24f1e5b206af23debd479b8aa6a86
AsyncRAT
85b4167417d416880d3e9f1ff438e1e5b125ceb28de4e3ebd9b5725717815157
AsyncRAT
8737b9c5969931c61500427c301c40e635acec433bd4450e1dca9f202e97fb6f
AsyncRAT
9085e6327177bb47cf43a8d8ed0c24fcfd50cde4199c5130f2b97b2508e9aabc
AsyncRAT
f5efd1b435706c4eb87582528b1f34825765cc5324f768a93d763b31642f8263
AsyncRAT
+ 2'925 additional samples on MalwareBazaar
Result
Malware family:
asyncrat
Create hunting rule
Score:
  10/10
Tags:
family:asyncrat botnet:default discovery rat
Link:
https://tria.ge/reports/240724-z7bxta1anb/
Behaviour
System Location Discovery: System Language Discovery
AsyncRat
Malware Config
C2 Extraction:
127.0.0.1:6606
127.0.0.1:7707
127.0.0.1:8808
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/0a5ffc0d-39c6-4593-b526-4009102c9d1e
Unpacked files
SH256 hash:
c6b2f283b8d973c15c02fa53a81775d61317ac6e863eb2ccff430fddcc512eb1
MD5 hash:
7a961e86d175526cdbd91bb7bf1c632a
SHA1 hash:
afb79ae0fe45fb271976ba79e792cbcbf61265b2
Detections:
AsyncRAT
Create hunting rule
win_asyncrat_w0
Create hunting rule
asyncrat
Create hunting rule
Link:
https://www.unpac.me/results/cdd497ee-094f-4288-9bc8-56e649b67933/
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/c6b2f283b8d973c15c02fa53a81775d61317ac6e863eb2ccff430fddcc512eb1

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:asyncrat
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect AsyncRat in memory
Reference:internal research
Rule name:asyncrat_kingrat
Create hunting rule
Author:jeFF0Falltrades
Rule name:DebuggerCheck__RemoteAPI
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
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:malware_asyncrat
Create hunting rule
Description:detect AsyncRat in memory
Reference:https://github.com/NYAN-x-CAT/AsyncRAT-C-Sharp
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:Mal_WIN_AsyncRat_RAT_PE
Create hunting rule
Author:Phatcharadol Thangplub
Description:Use to detect AsyncRAT implant.
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_Generic_Threat_ce98c4bc
Create hunting rule
Author:Elastic Security
Rule name:Windows_Trojan_Asyncrat_11a11ba1
Create hunting rule
Author:Elastic Security
Rule name:win_asyncrat_bytecodes
Create hunting rule
Author:Matthew @ Embee_Research
Description:Detects bytecodes present in unobfuscated AsyncRat Samples. Rule may also pick up on other Asyncrat-derived malware (Dcrat/venom etc)
Rule name:win_asyncrat_j1
Create hunting rule
Author:Johannes Bader @viql
Description:detects AsyncRAT
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)
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.

Malspam

AsyncRAT

Executable exe c6b2f283b8d973c15c02fa53a81775d61317ac6e863eb2ccff430fddcc512eb1

(this sample)

  
Link
https://bbs.kafan.cn/forum-31-1.html
  
Delivery method
Distributed via e-mail attachment

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