MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c3f8df96d4515a89429a11ee022311b57ce350a39684f545b2ae66709922e926. 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: 17


Intelligence 17 IOCs YARA 13 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: c3f8df96d4515a89429a11ee022311b57ce350a39684f545b2ae66709922e926
SHA3-384 hash: 05ab6ff9eceb6d321b82884bb92cbaf4c1c0356e9df874456b12dfcf52d97c14fef6fe2d479e548ac4b1753e5b08cb20
SHA1 hash: 0ab85e31162fdbac0b80a92dd26bd44cc10858f8
MD5 hash: 13aa6f896a759ea1c3e595f580934aec
humanhash: ceiling-ohio-solar-low
File name:xmO81svvwHqA.exe
Download: download sample
Signature AsyncRAT
Create hunting rule
File size:46'080 bytes
First seen:2022-12-17 02:34:49 UTC
Last seen:2022-12-17 16:07:23 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 768:Pu/6ZTgoiziWUUM9rmo2qrjO5QyJ4PiNjPISzjbwgX3ibGfjHiuuYoIBDZrx:Pu/6ZTgle2IO52iKS3b3XSCjCundrx
TLSH T191231B103BE8812BF2BE5F7899F26145867AF2733603E5492CC451DB5613FC68A426FE
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 pmelson
Tags:AsyncRAT exe

Intelligence

File Origin
# of uploads :
3
# of downloads :
209
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
asyncrat
Create hunting rule
ID:
1
File name:
xmO81svvwHqA.exe
Verdict:
Malicious activity
Analysis date:
2022-12-17 02:37:03 UTC
Tags:
asyncrat
Link:
https://app.any.run/tasks/4e7b8743-800d-41b3-ad08-0e23adde60e1

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/347178/
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
Using the Windows Management Instrumentation requests
Query of malicious DNS domain
Sending a TCP request to an infection source
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
anti-vm asyncrat njrat packed rat
Link:
https://www.filescan.io/uploads/639d2ad936e5986d04157385/reports/3cad05af-d118-440c-bd6c-b49bd87d3b01/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/f8fc24b3-49b9-4d6b-b17b-8e7606d65fed
Result
Threat name:
AsyncRAT
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1136084
Signature
.NET source code contains potential unpacker
Antivirus / Scanner detection for submitted sample
C2 URLs / IPs found in malware configuration
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Snort IDS alert for network traffic
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
Detection:
asyncrat
Create hunting rule
Link:
https://mwdb.cert.pl/sample/c3f8df96d4515a89429a11ee022311b57ce350a39684f545b2ae66709922e926/
Threat name:
ByteCode-MSIL.Backdoor.AsyncRAT
Create hunting rule
Status:
Malicious
First seen:
2022-12-17 02:35:08 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
24 of 25 (96.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=yp4n7fwukfnisqu2chxaeiyrwv6ogufds2cpkrnsvzthbgjc5eta._file
Verdict:
malicious
Label(s):
asyncrat
Create hunting rule
Result
Malware family:
asyncrat
Create hunting rule
Score:
  10/10
Tags:
family:asyncrat botnet:12pjoa rat
Link:
https://tria.ge/reports/221217-c21mnaah6z/
Behaviour
Suspicious use of AdjustPrivilegeToken
Async RAT payload
AsyncRat
Malware Config
C2 Extraction:
4Mekey.myftp.biz:6606
4Mekey.myftp.biz:7707
4Mekey.myftp.biz:8808
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/9b030072-ec5b-47f9-8f21-05b87215c9b2
Unpacked files
SH256 hash:
c3f8df96d4515a89429a11ee022311b57ce350a39684f545b2ae66709922e926
MD5 hash:
13aa6f896a759ea1c3e595f580934aec
SHA1 hash:
0ab85e31162fdbac0b80a92dd26bd44cc10858f8
Detections:
AsyncRAT
Create hunting rule
win_asyncrat_w0
Create hunting rule
Link:
https://www.unpac.me/results/8a8007a9-3a31-48f5-b917-2846c76af90c/
Malware family:
AsyncRAT
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/c3f8df96d451/report/overview.html
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/c3f8df96d4515a89429a11ee022311b57ce350a39684f545b2ae66709922e926

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_Detection_Dec_2022
Create hunting rule
Author:Potatech
Description:AsyncRat
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 c3f8df96d4515a89429a11ee022311b57ce350a39684f545b2ae66709922e926

(this sample)

  
Link
https://www.virustotal.com/gui/file/c3f8df96d4515a89429a11ee022311b57ce350a39684f545b2ae66709922e926/detection
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/347178/

Comments