MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 99735bf17537e921b53f4b4f2aada8fecbf1d0627ce3139b878151d9fe3f4b9f. 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 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 99735bf17537e921b53f4b4f2aada8fecbf1d0627ce3139b878151d9fe3f4b9f
SHA3-384 hash: c05c9cfc30700c9ffdb54dff8d1912b451cdf0b2a1b2b4d58dd5581e932c6ae9a886d91d4a150ad07721d3eb24c8aa80
SHA1 hash: 927f94547db0d01eb873807ec11950b641c207c2
MD5 hash: ba218c4db9606a955d3dd4e5aba22b7f
humanhash: skylark-hotel-november-nine
File name:1111110789_stripped.exe
Download: download sample
Signature AsyncRAT
Create hunting rule
File size:318'976 bytes
First seen:2022-10-17 17:24:41 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'657 x AgentTesla, 19'468 x Formbook, 12'206 x SnakeKeylogger)
ssdeep 6144:3baECFP6mYUjRMcvrKS6wPYZt/ZiGbG3FiP6Dz0tMneI4WQL2felwfZI/y:bmY+jKSfYdZrwu/
TLSH T1F4641A80FF63A3D9FC7BA9F6C722D9C1B2D4007D4346EBE2A594E233A2C8F614915516
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 dc8e9e2a328e8ef8 (1 x AsyncRAT, 1 x Formbook)
Reporter 0xToxin
Tags:AsyncRAT exe


Avatar
0xToxin
https://nitrosoftwares.beauty/1111110789.IMG

original hash:
49e984ea7471fddbfe3037d654555bb61c00df4261d4446cbda49ca0e9d7d20a

Intelligence

File Origin
# of uploads :
1
# of downloads :
288
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/321068/
Detection(s):
SecuriteInfo.com.Variant.Lazy.254775.19758.11201.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Launching a process
Running batch commands
Creating a file
Creating a file in the %AppData% subdirectories
Сreating synchronization primitives
DNS request
Sending a custom TCP request
Creating a process from a recently created file
Unauthorized injection to a system process
Enabling autorun by creating a file
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/634d8ff066721ebd9b2ed882/reports/59dbdb03-b46b-4296-b27c-81d244584099/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:
ModernLoader
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/3b7f13a5-5460-4d91-85aa-39e122084c12
Result
Threat name:
AsyncRAT, DcRat
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1092131
Signature
.NET source code contains potential unpacker
Allocates memory in foreign processes
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
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)
Snort IDS alert for network traffic
Uses dynamic DNS services
Uses schtasks.exe or at.exe to add and modify task schedules
Writes to foreign memory regions
Yara detected AsyncRAT
Yara detected DcRat
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 724751 Sample: 1111110789_stripped.exe Startdate: 17/10/2022 Architecture: WINDOWS Score: 100 66 Snort IDS alert for network traffic 2->66 68 Malicious sample detected (through community Yara rule) 2->68 70 Antivirus detection for URL or domain 2->70 72 7 other signatures 2->72 7 1111110789_stripped.exe 4 2->7         started        11 msdtc.exe 3 2->11         started        13 msdtc.exe 2 2->13         started        15 msdtc.exe 2->15         started        process3 file4 60 C:\Users\user\...\1111110789_stripped.exe.log, CSV 7->60 dropped 76 Writes to foreign memory regions 7->76 78 Allocates memory in foreign processes 7->78 80 Injects a PE file into a foreign processes 7->80 17 cmd.exe 3 7->17         started        20 cmd.exe 2 7->20         started        23 RegAsm.exe 1 2 7->23         started        26 cmd.exe 1 7->26         started        82 Antivirus detection for dropped file 11->82 84 Machine Learning detection for dropped file 11->84 28 cmd.exe 11->28         started        30 cmd.exe 1 11->30         started        34 2 other processes 11->34 32 cmd.exe 13->32         started        36 3 other processes 13->36 signatures5 process6 dnsIp7 56 C:\Users\user\AppData\Roaming\...\msdtc.exe, PE32 17->56 dropped 58 C:\Users\user\...\msdtc.exe:Zone.Identifier, ASCII 17->58 dropped 38 conhost.exe 17->38         started        74 Uses schtasks.exe or at.exe to add and modify task schedules 20->74 40 conhost.exe 20->40         started        62 venom12345.duckdns.org 185.216.71.4, 4449, 49708 CLOUDCOMPUTINGDE Germany 23->62 64 windowsupdatebg.s.llnwi.net 23->64 42 conhost.exe 26->42         started        44 schtasks.exe 1 26->44         started        50 2 other processes 28->50 46 conhost.exe 30->46         started        52 2 other processes 32->52 48 conhost.exe 34->48         started        54 2 other processes 36->54 file8 signatures9 process10
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/99735bf17537e921b53f4b4f2aada8fecbf1d0627ce3139b878151d9fe3f4b9f/
Threat name:
ByteCode-MSIL.Backdoor.AsyncRAT
Create hunting rule
Status:
Malicious
First seen:
2022-10-17 17:25:10 UTC
File Type:
PE (.Net Exe)
Extracted files:
22
AV detection:
21 of 26 (80.77%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=tfzvx4lvg7usdnj7jnhsvlni73f7dudcptrrhg4hqfi5t7r7jopq._file
Verdict:
malicious
Result
Malware family:
asyncrat
Create hunting rule
Score:
  10/10
Tags:
family:asyncrat botnet:venom clients rat
Link:
https://tria.ge/reports/221017-vzabsscfcp/
Behaviour
Creates scheduled task(s)
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Executes dropped EXE
Async RAT payload
AsyncRat
Malware Config
C2 Extraction:
venom12345.duckdns.org:4449
venomunverified.duckdns.org:4449
Unpacked files
SH256 hash:
fbdd9c091709eda80dab96698b3aa1fa5a37547a04dfcfb3c04317c27430402b
MD5 hash:
88456963150a52b66a2573de49c9432b
SHA1 hash:
c0d5e1a0a95bd9355501eaecf1669f84fb15257a
Detections:
VenomRat
Create hunting rule
Link:
https://www.unpac.me/results/6c1e82c4-c949-43a3-8dea-ae5668b7932d/
Parent samples :
68fa24f693d9b5955eb2a34a6fbbd3ac7b9e4e8efa53b17b6a94ddd01baab2fe
99735bf17537e921b53f4b4f2aada8fecbf1d0627ce3139b878151d9fe3f4b9f
SH256 hash:
99735bf17537e921b53f4b4f2aada8fecbf1d0627ce3139b878151d9fe3f4b9f
MD5 hash:
ba218c4db9606a955d3dd4e5aba22b7f
SHA1 hash:
927f94547db0d01eb873807ec11950b641c207c2
Link:
https://www.unpac.me/results/6c1e82c4-c949-43a3-8dea-ae5668b7932d/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/99735bf17537/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/99735bf17537e921b53f4b4f2aada8fecbf1d0627ce3139b878151d9fe3f4b9f

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:INDICATOR_EXE_Packed_SmartAssembly
Create hunting rule
Author:ditekSHen
Description:Detects executables packed with SmartAssembly
Rule name:INDICATOR_SUSPICIOUS_EXE_WMI_EnumerateVideoDevice
Create hunting rule
Author:ditekSHen
Description:Detects executables attemping to enumerate video devices using WMI
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

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Malspam

AsyncRAT

Executable exe 99735bf17537e921b53f4b4f2aada8fecbf1d0627ce3139b878151d9fe3f4b9f

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/321068/

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