MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 9ac4ff140a5b0cfe898c7f1eee2bc53cef1f4db03b7fc5c5f502d3a87f7c9393. 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: 10


Intelligence 10 IOCs YARA 4 File information Comments
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SHA256 hash: 9ac4ff140a5b0cfe898c7f1eee2bc53cef1f4db03b7fc5c5f502d3a87f7c9393
SHA3-384 hash: de240916138111f34b3f066d2033c72f8fa1d94e20ee3d5f62c544b123824d22e583097c4b52e3c213b227160f5fb043
SHA1 hash: 1e3aca167aef9ea746c7104bc47f9b521ca0377e
MD5 hash: 8a35a4d803dbc9eedcf1a4e20344b585
humanhash: black-hamper-floor-mobile
File name:8a35a4d803dbc9eedcf1a4e20344b585.exe
Download: download sample
Signature AsyncRAT
Create hunting rule
File size:1'573'376 bytes
First seen:2020-10-31 06:50:49 UTC
Last seen:2020-11-06 00:36:47 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:E+/cPhxOnQRcnepINTTLKyLSFptPrKnsv1sehNuHmXxuRZEayE8GTB03vyZFh3gq:
Threatray 404 similar samples on MalwareBazaar
TLSH E375383D6E5426E76173E676A0F60187F9E825C673781C8B42D33B1C2A4AE063D9B34D
Reporter abuse_ch
Tags:AsyncRAT exe RAT

Intelligence

File Origin
# of uploads :
3
# of downloads :
174
Origin country :
n/a
Vendor Threat Intelligence
Detection:
AsyncRat
Create hunting rule
Link:
https://www.capesandbox.com/analysis/81422/
Detection(s):
SecuriteInfo.com.Trojan.GenericKD.44276267.3045.29156.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Creating a file in the %AppData% subdirectories
Unauthorized injection to a recently created process
Creating a file
DNS request
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Connection attempt to an infection source
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.
Result
Threat name:
AsyncRAT
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
84 / 100
Link:
https://www.joesandbox.com/analysis/517479
Signature
.NET source code contains very large strings
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Yara detected AsyncRAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 307842 Sample: 8ODZeZYb0q.exe Startdate: 31/10/2020 Architecture: WINDOWS Score: 84 35 Multi AV Scanner detection for dropped file 2->35 37 Multi AV Scanner detection for submitted file 2->37 39 Yara detected AsyncRAT 2->39 41 4 other signatures 2->41 6 8ODZeZYb0q.exe 1 4 2->6         started        10 dcavlc.exe 1 2->10         started        12 dcavlc.exe 2->12         started        process3 file4 23 C:\Users\user\AppData\Roaming\...\dcavlc.exe, PE32 6->23 dropped 25 C:\Users\user\...\dcavlc.exe:Zone.Identifier, ASCII 6->25 dropped 27 C:\Users\user\AppData\...\8ODZeZYb0q.exe.log, ASCII 6->27 dropped 43 Injects a PE file into a foreign processes 6->43 14 8ODZeZYb0q.exe 2 6->14         started        17 8ODZeZYb0q.exe 6->17         started        19 dcavlc.exe 2 10->19         started        21 dcavlc.exe 2 12->21         started        signatures5 process6 dnsIp7 29 agentttt.ac.ug 79.134.225.40, 49722, 49731, 49738 FINK-TELECOM-SERVICESCH Switzerland 14->29 31 192.168.2.1 unknown unknown 14->31 33 agentpurple.ac.ug 14->33
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/9ac4ff140a5b0cfe898c7f1eee2bc53cef1f4db03b7fc5c5f502d3a87f7c9393/
Threat name:
ByteCode-MSIL.Backdoor.Crysan
Create hunting rule
Status:
Malicious
First seen:
2020-10-31 05:43:34 UTC
AV detection:
23 of 29 (79.31%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=tlcp6faklmgp5cmmp4po4k6fhtxr6tnqhn74lrpvalj2q734sojq._file
Verdict:
malicious
Label(s):
asyncrat
Create hunting rule
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AsyncRAT
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a4df5e9015f70b47dc4f2e6bae0fbeb9d108979e0cda7ef54aa123a0d33bdf8b
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bcb474ac919440674135c673d8c6a0fc8015a63a15b2849c3346f74a716b5249
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c8cc7c1a1210a082960b929c3598521979e16c1c6f5626b8ad29b9618ab5e18c
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d82330b1d9bfbebbff4d21e9ddd0f86e90ed27031ba29557587d182246301ee5
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d90bd5fe1ea6c9d3435e443b030981e2a4842d41b08cb39fc293ba4ea9ad1c9c
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f0006754d451556014c91039915ea9505f348f80538e536d30b75c5ef252d73d
AsyncRAT
f9cff9e6050b1536e55014e7eafdc8827fb237e9235ff60265c5d1afaa5d5e6e
AsyncRAT
+ 394 additional samples on MalwareBazaar
Result
Malware family:
asyncrat
Create hunting rule
Score:
  10/10
Tags:
family:asyncrat persistence rat
Link:
https://tria.ge/reports/201031-2xk7tm91wn/
Behaviour
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Adds Run key to start application
Async RAT payload
AsyncRat
Malware Config
C2 Extraction:
agentttt.ac.ug:6970
agentpurple.ac.ug:6970
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.95
Link:
https://yomi.yoroi.company/submissions/9ac4ff140a5b0cfe898c7f1eee2bc53cef1f4db03b7fc5c5f502d3a87f7c9393

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:JPCERT/CC Incident Response Group
Description:detect AsyncRat in memory
Reference:internal research
Rule name:Reverse_text_bin_mem
Create hunting rule
Author:James_inthe_box
Description:Reverse text detected
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 9ac4ff140a5b0cfe898c7f1eee2bc53cef1f4db03b7fc5c5f502d3a87f7c9393

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/686539/
  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/446461/
  
URLhaus
https://urlhaus.abuse.ch/url/572753/
  
URLhaus
https://urlhaus.abuse.ch/url/439781/
  
URLhaus
https://urlhaus.abuse.ch/url/572764/
Cape
Cape
https://www.capesandbox.com/analysis/81422/

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