MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 775ab7ffed2631864bc91813bd21153746938d4bc1045038a02da5d7fa4a5216. 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: 13


Intelligence 13 IOCs YARA 10 File information Comments
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SHA256 hash: 775ab7ffed2631864bc91813bd21153746938d4bc1045038a02da5d7fa4a5216
SHA3-384 hash: 4e6ea2ca3ba47a5a1c68e40de6939f7e6ee93dc1985b7532f515cdee51b45cadcb091564cbc8bca078c61658575c2ce1
SHA1 hash: 1c9752739b374604819281664f4a11af27976d4b
MD5 hash: 0651d466313658db0a474c33abad1eea
humanhash: bluebird-earth-sad-asparagus
File name:775ab7ffed2631864bc91813bd21153746938d4bc1045038a02da5d7fa4a5216
Download: download sample
Signature AsyncRAT
Create hunting rule
File size:92'160 bytes
First seen:2022-03-23 09:34:00 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'664 x AgentTesla, 19'478 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 1536:vuGs1THb01m2aKYDy3bCXSgyidXx2uGs1THb01m2aKYDy3bCXSgyidXx:vuGYTHb01m2aHDy3bCgi1x2uGYTHb01w
TLSH T1D1931B003BE8822BF2BE5F7898F261454A7AF1A32603D64D1CC451DB5A13FC69A536FD
Reporter JAMESWT_WT
Tags:AsyncRAT exe

Intelligence

File Origin
# of uploads :
1
# of downloads :
172
Origin country :
n/a
Vendor Threat Intelligence
Detection:
AsyncRat
Create hunting rule
Link:
https://www.capesandbox.com/analysis/256020/
Detection(s):
Win.Packed.Samas-7998113-0
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Win.Packed.Samas-8025724-0
Create hunting rule

Win.Packed.Razy-9625918-0
Create hunting rule

Win.Packed.AsyncRAT-9856570-1
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Win.Packed.AsyncRAT-9861056-1
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
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
DNS request
Sending a custom TCP request
Using the Windows Management Instrumentation requests
Reading critical registry keys
Searching for the window
Сreating synchronization primitives
Running batch commands
Unauthorized injection to a recently created process
Enabling autorun by creating a file
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
anti-vm asyncrat njrat obfuscated overlay packed rat replace.exe schtasks.exe
Link:
https://www.filescan.io/uploads/623ae9d90cd58dbd92de6eff/reports/95a9e8e6-1780-4d10-8cb4-78705b30e04c/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.
Gathering data
Result
Threat name:
AsyncRAT
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/962637
Signature
.NET source code contains potential unpacker
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
C2 URLs / IPs found in malware configuration
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 domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to harvest and steal browser information (history, passwords, etc)
Uses dynamic DNS services
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AsyncRAT
Yara detected Costura Assembly Loader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 595131 Sample: o41sWnONpP Startdate: 23/03/2022 Architecture: WINDOWS Score: 100 41 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->41 43 Multi AV Scanner detection for domain / URL 2->43 45 Found malware configuration 2->45 47 10 other signatures 2->47 7 o41sWnONpP.exe 7 2->7         started        process3 file4 27 C:\Users\user\AppData\Roaming\Adobe.exe, PE32 7->27 dropped 29 C:\Users\user\AppData\...\o41sWnONpP.exe.log, ASCII 7->29 dropped 10 cmd.exe 1 7->10         started        12 cmd.exe 1 7->12         started        process5 signatures6 15 Adobe.exe 1 2 10->15         started        19 conhost.exe 10->19         started        21 timeout.exe 1 10->21         started        49 Uses schtasks.exe or at.exe to add and modify task schedules 12->49 23 conhost.exe 12->23         started        25 schtasks.exe 1 12->25         started        process7 dnsIp8 31 primetoolz.duckdns.org 62.197.136.163, 2405, 49772, 49774 SPRINTLINKUS Netherlands 15->31 33 Antivirus detection for dropped file 15->33 35 Multi AV Scanner detection for dropped file 15->35 37 Machine Learning detection for dropped file 15->37 39 Tries to harvest and steal browser information (history, passwords, etc) 15->39 signatures9
Detection:
asyncrat
Create hunting rule
Link:
https://mwdb.cert.pl/sample/775ab7ffed2631864bc91813bd21153746938d4bc1045038a02da5d7fa4a5216/
Threat name:
ByteCode-MSIL.Backdoor.AsyncRAT
Create hunting rule
Status:
Malicious
First seen:
2022-03-14 20:38:00 UTC
File Type:
PE (.Net Exe)
Extracted files:
3
AV detection:
36 of 42 (85.71%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=o5nlp77neyyyms6jdaj32iivg5djhdklyecfaofafws5p6skkila._file
Verdict:
malicious
Label(s):
asyncrat
Create hunting rule
Result
Malware family:
asyncrat
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Score:
  10/10
Tags:
family:asyncrat botnet:default rat spyware stealer suricata
Link:
https://tria.ge/reports/220323-ljw17agbdj/
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
Loads dropped DLL
Reads user/profile data of web browsers
Checks computer location settings
Executes dropped EXE
Async RAT payload
AsyncRat
suricata: ET MALWARE Observed Malicious SSL Cert (AsyncRAT Server)
Malware Config
C2 Extraction:
primetoolz.duckdns.org:2405
Unpacked files
SH256 hash:
775ab7ffed2631864bc91813bd21153746938d4bc1045038a02da5d7fa4a5216
MD5 hash:
0651d466313658db0a474c33abad1eea
SHA1 hash:
1c9752739b374604819281664f4a11af27976d4b
Detections:
win_asyncrat_w0
Create hunting rule
Link:
https://www.unpac.me/results/2e52156c-cf7c-4d88-87b6-22a91d9b54e5/
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/775ab7ffed2631864bc91813bd21153746938d4bc1045038a02da5d7fa4a5216

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:INDICATOR_SUSPICIOUS_EXE_ASEP_REG_Reverse
Create hunting rule
Author:ditekSHen
Description:Detects file containing reversed ASEP Autorun registry keys
Rule name:malware_asyncrat
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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: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
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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: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.

Cape
Cape
https://www.capesandbox.com/analysis/256020/

Comments