MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8a9cefa63802b04de4ee53aa8b85fe4911eed878ef7d2eb207088a25f561a399. 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: 13


Intelligence 13 IOCs YARA 11 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 8a9cefa63802b04de4ee53aa8b85fe4911eed878ef7d2eb207088a25f561a399
SHA3-384 hash: f05eb3511d3a6db59096c8fcbc4f3d2b09beb97847e6f0e88b1ed0e5c173262710f91bd4911bf8dc104436838d2481d9
SHA1 hash: e69675ed7de83894af85754f815fe9881287b6a9
MD5 hash: 98bf05bbe0a8eaba258c9f09cf9bcf1f
humanhash: neptune-florida-fruit-autumn
File name:98bf05bbe0a8eaba258c9f09cf9bcf1f.exe
Download: download sample
Signature AsyncRAT
Create hunting rule
File size:858'624 bytes
First seen:2022-06-23 06:02:57 UTC
Last seen:2022-06-23 06:55:38 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'661 x AgentTesla, 19'474 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 24576:B+YMwzjGKbQf7t9BjtQbMBmbla7vCdcoCMQe1:oxIKKbQf7t9zQbMBka76dcJ1e1
TLSH T1A705F0016488B9E2F6371F778CA3163A5D0757A963AE8BDB5E4B47C428AD3DC52B7300
TrID 72.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.4% (.EXE) Win64 Executable (generic) (10523/12/4)
6.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.4% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.EXE) OS/2 Executable (generic) (2029/13)
File icon (PE):PE icon
dhash icon 8898a2ac1c9486be (8 x AsyncRAT, 2 x SnakeKeylogger)
Reporter abuse_ch
Tags:AsyncRAT exe RAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
245
Origin country :
n/a
Vendor Threat Intelligence
Detection:
AsyncRat
Create hunting rule
Link:
https://www.capesandbox.com/analysis/282550/
Result
Verdict:
Suspicious
Maliciousness:

Behaviour
Creating a window
Sending a custom TCP request
DNS request
Сreating synchronization primitives
Running batch commands
Creating a process with a hidden window
Launching a process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
80%
Tags:
packed
Link:
https://www.filescan.io/uploads/62b40256e88d6da4ffbe7ece/reports/dd5780b6-1784-4e45-abc3-8e125799eb9f/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.
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/75fcec54-9a3c-4591-972e-43724edf1166
Result
Threat name:
AsyncRAT
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1018424
Signature
C2 URLs / IPs found in malware configuration
Creates an undocumented autostart registry key
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
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 schtasks.exe or at.exe to add and modify task schedules
Yara detected AsyncRAT
Yara detected Costura Assembly Loader
Yara detected Generic Downloader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 650922 Sample: Ee7QpkyCD0.exe Startdate: 23/06/2022 Architecture: WINDOWS Score: 100 67 stackoverflow.com 2->67 77 Malicious sample detected (through community Yara rule) 2->77 79 Multi AV Scanner detection for dropped file 2->79 81 Multi AV Scanner detection for submitted file 2->81 83 7 other signatures 2->83 11 Ee7QpkyCD0.exe 7 2->11         started        16 images.exe 3 2->16         started        signatures3 process4 dnsIp5 71 151.101.1.69 FASTLYUS United States 11->71 73 stackoverflow.com 151.101.129.69 FASTLYUS United States 11->73 75 3 other IPs or domains 11->75 61 C:\Users\user\AppData\Roaming\...\ctfexe.exe, PE32 11->61 dropped 63 C:\Users\user\...\ctfexe.exe:Zone.Identifier, ASCII 11->63 dropped 65 C:\Users\user\AppData\...e7QpkyCD0.exe.log, ASCII 11->65 dropped 87 Creates an undocumented autostart registry key 11->87 89 Injects a PE file into a foreign processes 11->89 18 Ee7QpkyCD0.exe 6 11->18         started        21 cmd.exe 1 11->21         started        24 Ee7QpkyCD0.exe 11->24         started        28 3 other processes 11->28 91 Multi AV Scanner detection for dropped file 16->91 93 Machine Learning detection for dropped file 16->93 26 cmd.exe 16->26         started        file6 signatures7 process8 file9 59 C:\Users\user\AppData\Roaming\images.exe, PE32 18->59 dropped 30 cmd.exe 1 18->30         started        32 cmd.exe 1 18->32         started        85 Uses schtasks.exe or at.exe to add and modify task schedules 21->85 34 conhost.exe 21->34         started        36 timeout.exe 1 21->36         started        38 conhost.exe 26->38         started        40 timeout.exe 26->40         started        signatures10 process11 process12 42 images.exe 3 30->42         started        45 conhost.exe 30->45         started        47 timeout.exe 1 30->47         started        49 conhost.exe 32->49         started        51 schtasks.exe 1 32->51         started        dnsIp13 69 stackoverflow.com 42->69 53 cmd.exe 42->53         started        process14 process15 55 conhost.exe 53->55         started        57 timeout.exe 53->57         started       
Detection:
asyncrat
Create hunting rule
Link:
https://mwdb.cert.pl/sample/8a9cefa63802b04de4ee53aa8b85fe4911eed878ef7d2eb207088a25f561a399/
Threat name:
ByteCode-MSIL.Downloader.Seraph
Create hunting rule
Status:
Malicious
First seen:
2022-06-23 06:03:10 UTC
File Type:
PE (.Net Exe)
Extracted files:
5
AV detection:
17 of 26 (65.38%)
Threat level:
  3/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=rkoo7jryakye3zhokovixbp6jei65wdy556s5mqhbcfcl5lbuomq._file
Verdict:
malicious
Label(s):
asyncrat
Create hunting rule
Result
Malware family:
asyncrat
Create hunting rule
Score:
  10/10
Tags:
family:asyncrat botnet:eloasync rat
Link:
https://tria.ge/reports/220623-gr18naega5/
Behaviour
Creates scheduled task(s)
Delays execution with timeout.exe
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Checks computer location settings
Loads dropped DLL
Executes dropped EXE
Async RAT payload
AsyncRat
Malware Config
C2 Extraction:
91.192.100.7:8282
Unpacked files
SH256 hash:
9f01d9f2ed07e630ec078efa5d760762c3c8ad3b06e9e8a9062a37d63d57b026
MD5 hash:
9fbb8cec55b2115c00c0ba386c37ce62
SHA1 hash:
e2378a1c22c35e40fd1c3e19066de4e33b50f24a
Link:
https://www.unpac.me/results/9dadaba6-2d1b-4c82-9992-5d6d6aed9372/
SH256 hash:
52ecba17f13ceb21a94ca7ee0a4c973a52eedd8c43acce445b9a8a829066ebde
MD5 hash:
f32845633964314309a924a6dedc15f6
SHA1 hash:
95201364f0d5d1764e76d9e2803642d9aabf5ee6
Link:
https://www.unpac.me/results/9dadaba6-2d1b-4c82-9992-5d6d6aed9372/
SH256 hash:
8a9cefa63802b04de4ee53aa8b85fe4911eed878ef7d2eb207088a25f561a399
MD5 hash:
98bf05bbe0a8eaba258c9f09cf9bcf1f
SHA1 hash:
e69675ed7de83894af85754f815fe9881287b6a9
Link:
https://www.unpac.me/results/9dadaba6-2d1b-4c82-9992-5d6d6aed9372/
Malware family:
AsyncRAT
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/8a9cefa63802/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.45
Link:
https://yomi.yoroi.company/submissions/8a9cefa63802b04de4ee53aa8b85fe4911eed878ef7d2eb207088a25f561a399

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: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: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 8a9cefa63802b04de4ee53aa8b85fe4911eed878ef7d2eb207088a25f561a399

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/2239064/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/282550/

Comments