MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 85fa1c143de860787aaa1d270c121381d18ff236813059959fba9a941742b8a2. 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 12 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 85fa1c143de860787aaa1d270c121381d18ff236813059959fba9a941742b8a2
SHA3-384 hash: fe9360afe85998c716ec99aab34788296e793290ad587b2788afebb65ea2bff00b9b504c718159c39855c89e5dea7f45
SHA1 hash: ff0b69a2c3b8a46f554bd51ba9eb53e63f36502a
MD5 hash: 0b4826d8f1d697b194af336667bb768e
humanhash: robert-iowa-uniform-indigo
File name:file
Download: download sample
Signature AsyncRAT
Create hunting rule
File size:59'392 bytes
First seen:2022-11-18 03:08:49 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:xKy6AY49GcSqyH9ws9KEcRerlSgDTcg3hVxno1CLUbKgTUp0hhg2vpPzqnHn7wG5:xl6vnyElSKTp3hrg9bdTW8Hp+bwbb4x
TLSH T1CD431A003BE98529F1BE8FB49EF3714046B9E1976A07D9491CD051CA1623BC69E42BFF
TrID 61.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
11.0% (.SCR) Windows screen saver (13097/50/3)
8.8% (.EXE) Win64 Executable (generic) (10523/12/4)
5.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.2% (.EXE) Win16 NE executable (generic) (5038/12/1)
Reporter jstrosch
Tags:.NET AsyncRAT exe MSIL

Intelligence

File Origin
# of uploads :
1
# of downloads :
205
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
asyncrat
Create hunting rule
ID:
1
File name:
343e28c53f173b6d14916693f774923c.exe
Verdict:
Malicious activity
Analysis date:
2022-11-17 17:41:21 UTC
Tags:
opendir loader trojan rat asyncrat
Link:
https://app.any.run/tasks/0f8e5620-e14f-471b-878d-e1ec72895798

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/335614/
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

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
DNS request
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:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
anti-vm asyncrat njrat packed rat
Link:
https://www.filescan.io/uploads/6376f75007c3f5e84a01b84d/reports/86762da1-5c8c-4ac2-9df1-03e397bd6614/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/ae89e7fb-3374-4397-9b61-fdac3fcb586e
Result
Threat name:
AsyncRAT, PhoenixRAT
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1116266
Signature
.NET source code contains potential unpacker
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to log keystrokes (.Net Source)
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Snort IDS alert for network traffic
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
Yara detected PhoenixRAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 748975 Sample: file.exe Startdate: 18/11/2022 Architecture: WINDOWS Score: 100 35 Snort IDS alert for network traffic 2->35 37 Malicious sample detected (through community Yara rule) 2->37 39 Antivirus detection for URL or domain 2->39 41 9 other signatures 2->41 7 file.exe 7 2->7         started        10 yourphone.exe 3 2->10         started        process3 file4 29 C:\Users\user\AppData\Roaming\yourphone.exe, PE32 7->29 dropped 31 C:\Users\user\AppData\Local\...\file.exe.log, ASCII 7->31 dropped 13 cmd.exe 1 7->13         started        16 cmd.exe 1 7->16         started        43 Antivirus detection for dropped file 10->43 45 Machine Learning detection for dropped file 10->45 signatures5 process6 signatures7 47 Uses schtasks.exe or at.exe to add and modify task schedules 13->47 18 conhost.exe 13->18         started        20 schtasks.exe 1 13->20         started        22 yourphone.exe 2 16->22         started        25 conhost.exe 16->25         started        27 timeout.exe 1 16->27         started        process8 dnsIp9 33 jntlmanaway.con-ip.com 4.229.235.23, 49713, 8000 LEVEL3US United States 22->33
Detection:
asyncrat
Create hunting rule
Link:
https://mwdb.cert.pl/sample/85fa1c143de860787aaa1d270c121381d18ff236813059959fba9a941742b8a2/
Threat name:
ByteCode-MSIL.Backdoor.AsyncRAT
Create hunting rule
Status:
Malicious
First seen:
2022-11-18 03:09:08 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
25 of 26 (96.15%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=qx5byfb55bqhq6vkdutqyeqtqhiy74rwqeyftfm7xknjif2cxcra._file
Verdict:
malicious
Label(s):
asyncrat
Create hunting rule
Result
Malware family:
asyncrat
Create hunting rule
Score:
  10/10
Tags:
family:asyncrat botnet:lmwkapo rat
Link:
https://tria.ge/reports/221118-dnfwrsge25/
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
Checks computer location settings
Loads dropped DLL
Executes dropped EXE
Async RAT payload
AsyncRat
Malware Config
C2 Extraction:
jntlmanaway.con-ip.com:8000
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/bc20d2ee-c1d6-4f71-ac96-087dee476c82
Unpacked files
SH256 hash:
85fa1c143de860787aaa1d270c121381d18ff236813059959fba9a941742b8a2
MD5 hash:
0b4826d8f1d697b194af336667bb768e
SHA1 hash:
ff0b69a2c3b8a46f554bd51ba9eb53e63f36502a
Detections:
AsyncRAT
Create hunting rule
win_asyncrat_w0
Create hunting rule
Link:
https://www.unpac.me/results/1d1f1d7f-e6b2-434a-8310-a5d5cf7c0a58/
Please note that we are no longer able to provide a coverage score for Virus Total.

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
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: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 85fa1c143de860787aaa1d270c121381d18ff236813059959fba9a941742b8a2

(this sample)

  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/335614/
  
URLhaus
https://urlhaus.abuse.ch/url/2425295/

Comments