MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 aa0399675c53f77a7996102b5301ea24814642e9eee30648c9ac75b3b1052235. 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: 8


Intelligence 8 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: aa0399675c53f77a7996102b5301ea24814642e9eee30648c9ac75b3b1052235
SHA3-384 hash: a1a6b808d3d27eed2f9e1dc7889f067caeedc2c858c8d932ca1912a2fb32fe7aad6bd8411f1a5071c2fea3ff51fcf10d
SHA1 hash: d3ad5fa2af44707e5e27b76fdbebf5a9ae28b457
MD5 hash: fd3988d887f5e982384dca104ea49001
humanhash: stream-fix-dakota-ack
File name:FedEx Invoice 202116435.exe
Download: download sample
Signature AsyncRAT
Create hunting rule
File size:784'384 bytes
First seen:2021-01-16 07:34:43 UTC
Last seen:2021-01-16 11:53:52 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'742 x AgentTesla, 19'607 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:Rtg4CDLU4cx2NdJxe8mC3jWo3nkc10fa5IKg5CHudRj2:RtVQcGdJxe8mmZUB5Cg6
Threatray 42 similar samples on MalwareBazaar
TLSH F2F4E811BF9CEF11D7AC72FC6C136DD02BA4DD41A285FA6CD971608E589FE2500BEA84
Reporter abuse_ch
Tags:AsyncRAT exe FedEx nVpn RAT


Avatar
abuse_ch
Malspam distributing AsyncRAT:

HELO: llsk278-a17.servidoresdns.net
Sending IP: 82.223.190.9
From: FEDEX CUSTOMER CARE <barna@sarriegui.com>
Subject: [CN] [JP] [HK]: FedEx Invoice 账单 (Customer Account -XXXXXXXX-XXXXXXX)
Attachment: FedEx Invoice 202116435.7z (contains "FedEx Invoice 202116435.exe")

AsyncRAT C2:
79.134.225.45:2233

Intelligence

File Origin
# of uploads :
2
# of downloads :
364
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
FedEx Invoice 202116435.exe
Verdict:
Malicious activity
Analysis date:
2021-01-16 07:47:42 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/51f980cc-1f49-4319-bfdc-3543f6bed4fe

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/112310/
Detection(s):
SecuriteInfo.com.ArtemisFD3988D887F5.6637.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Launching a process
Creating a process with a hidden window
Result
Threat name:
AsyncRAT
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
92 / 100
Link:
https://www.joesandbox.com/analysis/582952
Signature
.NET source code contains potential unpacker
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
Sigma detected: Scheduled temp file as task from temp location
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 AntiVM_3
Yara detected AsyncRAT
Behaviour
Behavior Graph:
Download SVG
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/aa0399675c53f77a7996102b5301ea24814642e9eee30648c9ac75b3b1052235/
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=vibzsz24kp3xu6mwcavvgapkesaumqxj53rqmsgjvr23hmifei2q._file
Verdict:
unknown
Similar samples:
1df60dbceea9466745b0dd1b1f723a63099c25dab9053e2b6889e74136568fe1
AsyncRAT
28fa65d2b186492e5f1108e2bfa0b6babef6e12ae1dcfba019ee7065ee703caf
AsyncRAT
370b50f749870847982003ab983f756257364b973366df915ce77db4fd140936
AsyncRAT
490949068e713c6d3c2fd04b38d00573420b0f5ddf1b61672ffd2bd8ce40cad2
AsyncRAT
565a3fc27dfb56071acfd1e8c492eb3becbb587f0167353834e97c3819cc1337
AsyncRAT
6d8adcd002ed00598948413bc657962ef782ff561c64ffa338a1239bb7af79e0
AsyncRAT
83e2e475905c185d7114012d68a15aecf822c14a1e1bda9bf55441062a01fba1
AsyncRAT
85b414718d97bd7f716c6eaabe004cbf4ab89e16688490100901bcaef1eedc58
AsyncRAT
ad61d7c665bff74014eb7607c662bc91c142ad2ae2f168ccc3071021818d000b
AsyncRAT
db40b329c1ecea2045d4e2bc27fe712b52bbfc1d51ff1b55dcd3c8bb72258710
AsyncRAT
+ 32 additional samples on MalwareBazaar
Result
Malware family:
asyncrat
Create hunting rule
Score:
  10/10
Tags:
family:asyncrat rat
Link:
https://tria.ge/reports/210116-9jv49cg7fj/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Async RAT payload
AsyncRat
Malware Config
C2 Extraction:
79.134.225.45:2233
Unpacked files
SH256 hash:
aa0399675c53f77a7996102b5301ea24814642e9eee30648c9ac75b3b1052235
MD5 hash:
fd3988d887f5e982384dca104ea49001
SHA1 hash:
d3ad5fa2af44707e5e27b76fdbebf5a9ae28b457
Link:
https://www.unpac.me/results/045356df-b793-4d75-a965-fed72183a277/
SH256 hash:
1d6ecf546163882d34d4bb2b7afa3889506ca3036ed536c4ed972ed89bdf5035
MD5 hash:
fb169513679d349cb2a7e4121bacfd4a
SHA1 hash:
26619d7ce0a175b9fc4fbfd7f4b105050562924f
Link:
https://www.unpac.me/results/045356df-b793-4d75-a965-fed72183a277/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.75
Link:
https://yomi.yoroi.company/submissions/aa0399675c53f77a7996102b5301ea24814642e9eee30648c9ac75b3b1052235

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

zip 2ef9705dc97fb5c320f36afdfd465da02ceccfce94e2a810aa082e81a7a1e98b

AsyncRAT

Executable exe aa0399675c53f77a7996102b5301ea24814642e9eee30648c9ac75b3b1052235

(this sample)

  
Dropped by
MD5 e93241f38774a7007281b976996976f8
  
Delivery method
Distributed via e-mail attachment
  
Dropped by
SHA256 2ef9705dc97fb5c320f36afdfd465da02ceccfce94e2a810aa082e81a7a1e98b
Cape
Cape
https://www.capesandbox.com/analysis/112310/

Comments