MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4a6f9590de9568f05e0095a40bf87eeab7e304024336ac961e9be3b6ce18a65d. 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: 9


Intelligence 9 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4a6f9590de9568f05e0095a40bf87eeab7e304024336ac961e9be3b6ce18a65d
SHA3-384 hash: 57ce44bbb624252f62eb838653971a9363e31a43376caa25f1c7791dd083e37b23ff64fa95fca1c8684ec00ca7b700e3
SHA1 hash: 90cdbf1af484553df4ceb84fdfc0104f204959dc
MD5 hash: 83657ba78389fda82cbfc21a1e65e4ea
humanhash: whiskey-arizona-butter-yellow
File name:kb7geaYHhKQa1qa.exe
Download: download sample
Signature AsyncRAT
Create hunting rule
File size:659'456 bytes
First seen:2020-10-21 07:01:56 UTC
Last seen:2020-10-25 18:14:04 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 12288:OaVPg/CyUAM+NypJRpoeOx8E1ajWp9A1GKZHNYPzodfGqTL2WdUBkjbo1qYnOJsI:OEGC6MwEPGpaWbA1GUKzod+
Threatray 378 similar samples on MalwareBazaar
TLSH 91E48C9C319075AFC65BCE728A681C24EA217C67631BC247901336AC9A3DADBDF145F3
Reporter abuse_ch
Tags:AsyncRAT exe RAT


Avatar
abuse_ch
Malspam distributing AsyncRAT:

HELO: aviationdefence.co.uk
Sending IP: 45.147.230.204
From: Ahmed Akram <sales@aviationdefence.co.uk>
Reply-To: Ahmed Akram <sales@aviationdefence.co.uk>
Subject: NEW PO 4500087588
Attachment: 4500087588.img (contains "kb7geaYHhKQa1qa.exe")

AsyncRAT C2:
185.19.85.149:6667

Intelligence

File Origin
# of uploads :
3
# of downloads :
84
Origin country :
n/a
Vendor Threat Intelligence
Detection:
AsyncRat
Create hunting rule
Link:
https://www.capesandbox.com/analysis/73863/
Detection(s):
SecuriteInfo.com.Variant.Bulz.147817.17283.26795.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Creating a window
Creating a file
Result
Threat name:
AsyncRAT
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/505310
Signature
Binary contains a suspicious time stamp
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
Sigma detected: Scheduled temp file as task from temp location
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)
Uses IRC for communication with a C&C
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM_3
Yara detected AsyncRAT
Behaviour
Behavior Graph:
Download SVG
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/4a6f9590de9568f05e0095a40bf87eeab7e304024336ac961e9be3b6ce18a65d/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2020-10-20 16:59:19 UTC
AV detection:
23 of 27 (85.19%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=jjxzleg6svupaxqaswsax6d65k36gbacim3kzfq6tpr3ntqyuzoq._file
Verdict:
malicious
Label(s):
asyncrat
Create hunting rule
Similar samples:
430bbefe89bad382de0a7831e7afc238f397a930a235d208585fb2bfb0b950bc
AsyncRAT
7caf87ac1666f10cbbff4cc01d51ec4df556908b2d8d55d5c4f0f3724dceded1
AsyncRAT
862b45e2c98a175f625797db1d3342e0d9dc35b79e3386deb42c06b1918867d9
AsyncRAT
a4df5e9015f70b47dc4f2e6bae0fbeb9d108979e0cda7ef54aa123a0d33bdf8b
AsyncRAT
bcb474ac919440674135c673d8c6a0fc8015a63a15b2849c3346f74a716b5249
AsyncRAT
c8cc7c1a1210a082960b929c3598521979e16c1c6f5626b8ad29b9618ab5e18c
AsyncRAT
d82330b1d9bfbebbff4d21e9ddd0f86e90ed27031ba29557587d182246301ee5
AsyncRAT
d90bd5fe1ea6c9d3435e443b030981e2a4842d41b08cb39fc293ba4ea9ad1c9c
AsyncRAT
f0006754d451556014c91039915ea9505f348f80538e536d30b75c5ef252d73d
AsyncRAT
f9cff9e6050b1536e55014e7eafdc8827fb237e9235ff60265c5d1afaa5d5e6e
AsyncRAT
+ 368 additional samples on MalwareBazaar
Result
Malware family:
asyncrat
Create hunting rule
Score:
  10/10
Tags:
rat family:asyncrat
Link:
https://tria.ge/reports/201021-qxq2lbzk2n/
Behaviour
Creates scheduled task(s)
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Async RAT payload
AsyncRat
Malware Config
C2 Extraction:
185.19.85.149,jaffinryu.loseyourip.com:6667
Unpacked files
SH256 hash:
a26c0827c8fafd4be66ee1db60be432b175df26f491b72d175575de49b4a1c6e
MD5 hash:
3c0b97f95a2cc2fdff677c191558f8a2
SHA1 hash:
64d2ca476b4862cf4293032624043c11295b95f9
Detections:
win_asyncrat_w0
Create hunting rule
Link:
https://www.unpac.me/results/7d40f9e7-0830-49f5-a3cb-562178c60c90/
Parent samples :
d90bd5fe1ea6c9d3435e443b030981e2a4842d41b08cb39fc293ba4ea9ad1c9c
4a6f9590de9568f05e0095a40bf87eeab7e304024336ac961e9be3b6ce18a65d
71d985aed65c61322d70e4552283b91d601428a39499f6b33b45ec4e1b343172
SH256 hash:
a422b3f60537547ed3e01edb44f3ba7fbed612e16b51bb8658416b35dd34b9c0
MD5 hash:
03455acc48f46d7e7d06efabd6e99caf
SHA1 hash:
a993ff219de00504a775457e3813a579450f194f
Link:
https://www.unpac.me/results/7d40f9e7-0830-49f5-a3cb-562178c60c90/
SH256 hash:
a14c122c029638695586f117fa74237d23da33492014fb10821169a550a66a8e
MD5 hash:
5e827fc933bc33f1aa7c6750fb28f40d
SHA1 hash:
be1bd936c177ce59fff5594d5f4c32f04c2b49f8
Link:
https://www.unpac.me/results/7d40f9e7-0830-49f5-a3cb-562178c60c90/
SH256 hash:
4a6f9590de9568f05e0095a40bf87eeab7e304024336ac961e9be3b6ce18a65d
MD5 hash:
83657ba78389fda82cbfc21a1e65e4ea
SHA1 hash:
90cdbf1af484553df4ceb84fdfc0104f204959dc
Link:
https://www.unpac.me/results/7d40f9e7-0830-49f5-a3cb-562178c60c90/
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: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.

Malspam

AsyncRAT

img 7cf057aacb275d1e54dc75960e84b24daf0936607b2d629680ccce043e8e4c50

AsyncRAT

Executable exe 4a6f9590de9568f05e0095a40bf87eeab7e304024336ac961e9be3b6ce18a65d

(this sample)

  
Dropped by
MD5 b8243215cbe8a765f14ad7e95d5392f3
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/73863/
  
Dropped by
SHA256 7cf057aacb275d1e54dc75960e84b24daf0936607b2d629680ccce043e8e4c50

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