MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 51db4d2c54e299ae26b3085633aa79476560f9a2f5cc4328683cdee5fb6591fe. 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: 17


Intelligence 17 IOCs YARA 13 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 51db4d2c54e299ae26b3085633aa79476560f9a2f5cc4328683cdee5fb6591fe
SHA3-384 hash: f93aceeb2cfea99d61f67defe3d2e6de52522a0c3b24616834233911d8c8215c01e49a7049a188bfb4b9b4b46fd52f22
SHA1 hash: 230eb5af23d0fd72331f056e4b6bdb3d43c6671a
MD5 hash: 3c7f22b2aec2778946449c555b71abf9
humanhash: jig-juliet-aspen-north
File name:windll32.exe
Download: download sample
Signature AsyncRAT
Create hunting rule
File size:58'744 bytes
First seen:2022-12-07 05:40:19 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'742 x AgentTesla, 19'607 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 1536:8uYH9T34l26qvDm3bbXSMZyuB3ibtdXxKDHz/kP0N:8uYdT34l26QDm3bbFl2t1xKXkP0N
TLSH T15A436D003FEC8127F7BE4F78A8F251464A79F2A36A47D54E2C84419B1613BC69B426FD
TrID 60.4% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.8% (.SCR) Windows screen saver (13097/50/3)
8.7% (.EXE) Win64 Executable (generic) (10523/12/4)
5.4% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.1% (.EXE) Win16 NE executable (generic) (5038/12/1)
Reporter JAMESWT_WT
Tags:AsyncRAT exe github-com-alibaba2044

Intelligence

File Origin
# of uploads :
1
# of downloads :
217
Origin country :
IT IT
Vendor Threat Intelligence
Malware family:
asyncrat
Create hunting rule
ID:
1
File name:
windll32.exe
Verdict:
Malicious activity
Analysis date:
2022-12-07 05:45:03 UTC
Tags:
asyncrat
Link:
https://app.any.run/tasks/d4e0ba0f-f71c-496b-b0b9-fd5e4e386f11

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/343725/
Detection(s):
Win.Packed.Razy-9625918-0
Create hunting rule

Win.Packed.AsyncRAT-9856570-1
Create hunting rule

Win.Packed.AsyncRAT-9861056-1
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Running batch commands
Creating a process with a hidden window
Creating a file in the %AppData% directory
Creating a file in the %temp% directory
Creating a file
Launching a process
Creating a process from a recently created file
DNS request
Sending a custom TCP request
Unauthorized injection to a recently created process
Enabling autorun by creating a file
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
anti-vm asyncrat njrat overlay packed packed rat
Link:
https://www.filescan.io/uploads/6390276e75655a0108ea755a/reports/2af8862a-f639-45f0-b914-2a400fc74a33/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:
AsyncRAT
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/6d2a97c1-2841-4eab-8b6c-cf6cfd55d2f9
Result
Threat name:
AsyncRAT, PhoenixRAT
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1129618
Signature
.NET source code contains potential unpacker
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
C2 URLs / IPs found in malware configuration
Connects to a pastebin service (likely for C&C)
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 Generic Downloader
Yara detected PhoenixRAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 762340 Sample: windll32.exe Startdate: 07/12/2022 Architecture: WINDOWS Score: 100 34 danbochie2.dns.army 2->34 40 Malicious sample detected (through community Yara rule) 2->40 42 Antivirus / Scanner detection for submitted sample 2->42 44 Multi AV Scanner detection for submitted file 2->44 46 8 other signatures 2->46 8 path.exe 3 2->8         started        11 windll32.exe 7 2->11         started        signatures3 process4 file5 48 Antivirus detection for dropped file 8->48 50 Multi AV Scanner detection for dropped file 8->50 52 Machine Learning detection for dropped file 8->52 30 C:\Users\user\AppData\Roaming\path.exe, PE32 11->30 dropped 32 C:\Users\user\AppData\...\windll32.exe.log, ASCII 11->32 dropped 14 cmd.exe 1 11->14         started        17 cmd.exe 1 11->17         started        signatures6 process7 signatures8 54 Uses schtasks.exe or at.exe to add and modify task schedules 14->54 19 conhost.exe 14->19         started        21 schtasks.exe 1 14->21         started        23 path.exe 15 2 17->23         started        26 conhost.exe 17->26         started        28 timeout.exe 1 17->28         started        process9 dnsIp10 36 danbochie2.dns.army 157.90.206.49, 6606 REDIRISRedIRISAutonomousSystemES United States 23->36 38 pastebin.com 104.20.67.143, 443, 49698, 49700 CLOUDFLARENETUS United States 23->38
Detection:
asyncrat
Create hunting rule
Link:
https://mwdb.cert.pl/sample/51db4d2c54e299ae26b3085633aa79476560f9a2f5cc4328683cdee5fb6591fe/
Threat name:
ByteCode-MSIL.Backdoor.AsyncRAT
Create hunting rule
Status:
Malicious
First seen:
2022-12-07 05:24:37 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
25 of 26 (96.15%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=khnu2lcu4km24jvtbbldhktzi5swb6nc6xgegkdihtpol63fsh7a._file
Verdict:
malicious
Label(s):
asyncrat
Create hunting rule
Result
Malware family:
asyncrat
Create hunting rule
Score:
  10/10
Tags:
family:asyncrat rat
Link:
https://tria.ge/reports/221207-gdfd2acf81/
Behaviour
Creates scheduled task(s)
Delays execution with timeout.exe
Modifies system certificate store
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Legitimate hosting services abused for malware hosting/C2
Checks computer location settings
Loads dropped DLL
Executes dropped EXE
Async RAT payload
AsyncRat
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/9e213bfc-e730-4206-b3a6-8b69701fc53f
Unpacked files
SH256 hash:
51db4d2c54e299ae26b3085633aa79476560f9a2f5cc4328683cdee5fb6591fe
MD5 hash:
3c7f22b2aec2778946449c555b71abf9
SHA1 hash:
230eb5af23d0fd72331f056e4b6bdb3d43c6671a
Detections:
AsyncRAT
Create hunting rule
win_asyncrat_w0
Create hunting rule
Link:
https://www.unpac.me/results/c5dadf0d-bb70-4434-8dc1-73b9b1c564c8/
Malware family:
AsyncRAT
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/51db4d2c54e2/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
iSpy Keylogger
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/51db4d2c54e299ae26b3085633aa79476560f9a2f5cc4328683cdee5fb6591fe

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:AsyncRat_Detection_Dec_2022
Create hunting rule
Author:Potatech
Description:AsyncRat
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:Windows_Trojan_Asyncrat_11a11ba1
Create hunting rule
Author:Elastic Security
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.

Cape
Cape
https://www.capesandbox.com/analysis/343725/

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