MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8d29f4ed1dfb22f2b11e74a065ca6f8993cead1cbd965f576a935cf80fb1afc7. 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: 12


Intelligence 12 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 8d29f4ed1dfb22f2b11e74a065ca6f8993cead1cbd965f576a935cf80fb1afc7
SHA3-384 hash: 97ebf950c2f0eac797062328cf6cec47ac312c20822cd9361cff2932eb3a74d4b03e5868f070a7e8c317a8898b5a3063
SHA1 hash: fbca0f4a9f0dfb1f7d1e93e9a650ac4e5f815901
MD5 hash: 101293648c64868f186872244df8b871
humanhash: minnesota-delta-south-minnesota
File name:SKM_C258201001130020005057.exe
Download: download sample
Signature AsyncRAT
Create hunting rule
File size:1'052'224 bytes
First seen:2020-12-22 07:02:56 UTC
Last seen:2020-12-22 08:46:21 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:gRGhYXbhLzRIGvSBnEoVso+0/XaLy4QECWDBBCbZtJr4Ka/5AjpwZbTnEynqU5e5:gRYYzK
Threatray 521 similar samples on MalwareBazaar
TLSH DC253A01498268CBD6B2D494A3CE82D6B387998DE7A97FD4FE10E21531DC467EFB8D40
Reporter abuse_ch
Tags:AsyncRAT DHL exe RAT


Avatar
abuse_ch
Malspam distributing AsyncRAT:

HELO: s1008.xrea.com
Sending IP: 150.95.9.228
From: DHL Customer Service <noreply@dhl.com>
Subject: Your Package Delivery
Attachment: SKM_C258201001130020005057.7z (contains "SKM_C258201001130020005057.exe")

AsyncRAT C2:
severdops.ddns.net:6204

Intelligence

File Origin
# of uploads :
2
# of downloads :
222
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
SKM_C258201001130020005057.exe
Verdict:
Malicious activity
Analysis date:
2020-12-21 15:42:31 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/eccd4c09-a606-4d4b-a91b-e2fe99ef4892

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/108824/
Detection(s):
SecuriteInfo.com.Trojan.DownLoader36.29944.9165.28410.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Unauthorized injection to a recently created process
Adding an access-denied ACE
Creating a file
DNS request
Sending a custom TCP request
Using the Windows Management Instrumentation requests
Sending a UDP request
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Enabling autorun by creating a file
Enabling autorun
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.adwa.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/567940
Signature
.NET source code contains very large strings
Contains functionality to hide a thread from the debugger
Creates an undocumented autostart registry key
Creates autostart registry keys with suspicious names
Creates multiple autostart registry keys
Drops PE files to the startup folder
Hides threads from debuggers
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
Multi AV Scanner detection for domain / URL
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)
Uses dynamic DNS services
Yara detected AsyncRAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 333045 Sample: SKM_C258201001130020005057.exe Startdate: 22/12/2020 Architecture: WINDOWS Score: 100 46 Multi AV Scanner detection for domain / URL 2->46 48 Multi AV Scanner detection for dropped file 2->48 50 Multi AV Scanner detection for submitted file 2->50 52 6 other signatures 2->52 6 SKM_C258201001130020005057.exe 3 4 2->6         started        10 SKM_C258201001130020005057.exe 2->10         started        12 SKM_C258201001130020005057.exe 2 2->12         started        14 3 other processes 2->14 process3 file4 38 C:\Users\...\SKM_C258201001130020005057.exe, PE32 6->38 dropped 40 SKM_C2582010011300...exe:Zone.Identifier, ASCII 6->40 dropped 54 Creates an undocumented autostart registry key 6->54 56 Drops PE files to the startup folder 6->56 58 Hides threads from debuggers 6->58 60 Contains functionality to hide a thread from the debugger 6->60 16 SKM_C258201001130020005057.exe 2 6->16         started        19 WerFault.exe 23 9 6->19         started        62 Creates autostart registry keys with suspicious names 10->62 64 Creates multiple autostart registry keys 10->64 66 Injects a PE file into a foreign processes 10->66 32 2 other processes 10->32 21 SKM_C258201001130020005057.exe 3 12->21         started        24 WerFault.exe 2 9 12->24         started        26 SKM_C258201001130020005057.exe 14->26         started        28 SKM_C258201001130020005057.exe 14->28         started        30 WerFault.exe 14->30         started        34 3 other processes 14->34 signatures5 process6 dnsIp7 42 severdops.ddns.net 103.99.1.128, 49721, 6204 VNPT-AS-VNVIETNAMPOSTSANDTELECOMMUNICATIONSGROUPVN Viet Nam 16->42 36 C:\...\SKM_C258201001130020005057.exe.log, ASCII 21->36 dropped 44 192.168.2.1 unknown unknown 24->44 file8
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/8d29f4ed1dfb22f2b11e74a065ca6f8993cead1cbd965f576a935cf80fb1afc7/
Threat name:
Win32.Backdoor.Crysan
Create hunting rule
Status:
Malicious
First seen:
2020-12-21 14:09:52 UTC
AV detection:
19 of 28 (67.86%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=ruu7j3i57mrpfmi6osqglstprgj45li4xwlf6v3ksnopqd5rv7dq._file
Verdict:
malicious
Label(s):
asyncrat
Create hunting rule
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AsyncRAT
+ 511 additional samples on MalwareBazaar
Result
Malware family:
asyncrat
Create hunting rule
Score:
  10/10
Tags:
family:asyncrat persistence rat
Link:
https://tria.ge/reports/201222-2b7clrbqk2/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Program crash
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Adds Run key to start application
Drops startup file
Async RAT payload
Modifies WinLogon for persistence
AsyncRat
Malware Config
C2 Extraction:
severdops.ddns.net:6204
Unpacked files
SH256 hash:
8d29f4ed1dfb22f2b11e74a065ca6f8993cead1cbd965f576a935cf80fb1afc7
MD5 hash:
101293648c64868f186872244df8b871
SHA1 hash:
fbca0f4a9f0dfb1f7d1e93e9a650ac4e5f815901
Link:
https://www.unpac.me/results/8041b2f6-61a5-4dc0-a770-a3a386c2cc8f/
SH256 hash:
ec91ab8f96f43999c1eddf0a074ecfe461a6a4bad489620f6cf2f3d8fb38639f
MD5 hash:
0dcb3b0fd15822943b4bf225a32f29a6
SHA1 hash:
572305e27ce1620b3a84eb64845c7faefb6c3000
Link:
https://www.unpac.me/results/8041b2f6-61a5-4dc0-a770-a3a386c2cc8f/
SH256 hash:
1afb022bf3c8c895629d0052ffe956ce3c60360a9235d02ad65d58519e87b0c5
MD5 hash:
4792090ec07bf5208d25e66a782a2dea
SHA1 hash:
71dc082772e9b822185f0f6bdbdca24e285e380e
Detections:
win_asyncrat_w0
Create hunting rule
Link:
https://www.unpac.me/results/8041b2f6-61a5-4dc0-a770-a3a386c2cc8f/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Backdoor
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/8d29f4ed1dfb22f2b11e74a065ca6f8993cead1cbd965f576a935cf80fb1afc7

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

7z 387c08f088753f350e49e5404b42b4bdf2fb44d43a5f7685714cf1f509a6f82e

AsyncRAT

Executable exe 8d29f4ed1dfb22f2b11e74a065ca6f8993cead1cbd965f576a935cf80fb1afc7

(this sample)

  
Dropped by
MD5 eb4af7d03ef748444d3b388411a2a76b
  
Delivery method
Distributed via e-mail attachment
  
Dropped by
SHA256 387c08f088753f350e49e5404b42b4bdf2fb44d43a5f7685714cf1f509a6f82e
Cape
Cape
https://www.capesandbox.com/analysis/108824/

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