MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 aff09f337cf7a6feb5384d7f4013ea98efc7ce95ddec70dc8fc4f2a5b0293ad4. 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 1 YARA 16 File information Comments
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SHA256 hash: aff09f337cf7a6feb5384d7f4013ea98efc7ce95ddec70dc8fc4f2a5b0293ad4
SHA3-384 hash: 35fb3e139d5fa0c7d2b15d4801cd1e1a03dc9be9ea91b5c73afe823641adc21dab7c213e2cdf9936b111729c66236962
SHA1 hash: 940986479b32ca2ea956f75ee9015d27f0447a61
MD5 hash: acf373dfac24db1a1a4024fe0768e032
humanhash: cardinal-north-video-johnny
File name:INV002374.pdf.exe
Download: download sample
Signature AsyncRAT
Create hunting rule
File size:238'080 bytes
First seen:2022-06-16 10:03:05 UTC
Last seen:2022-06-16 11:24:19 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 3072:lCNbAV+N2XPGvwqLJdh59Yrb7VIRyecjSyKYeQve13/:lCNbLgYDc9dK
TLSH T1D6342083E58869D9EC3E37F260273E7217666E7FBD745479316DF0120A73283026AD1A
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 332b371736363303 (3 x AgentTesla, 2 x AsyncRAT, 1 x SnakeKeylogger)
Reporter abuse_ch
Tags:AsyncRAT exe RAT


Avatar
abuse_ch
AsyncRAT C2:
193.233.191.4:6606

Indicators Of Compromise (IOCs)

Below is a list of indicators of compromise (IOCs) associated with this malware samples.

IOCThreatFox Reference
193.233.191.4:6606 https://threatfox.abuse.ch/ioc/713960/

Intelligence

File Origin
# of uploads :
2
# of downloads :
277
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
asyncrat
Create hunting rule
ID:
1
File name:
aff09f337cf7a6feb5384d7f4013ea98efc7ce95ddec70dc8fc4f2a5b0293ad4.zip
Verdict:
Malicious activity
Analysis date:
2022-06-17 02:23:37 UTC
Tags:
trojan rat asyncrat
Link:
https://app.any.run/tasks/fe403233-7aef-4228-a49f-4dbf7c72b9ef

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/280637/
Detection(s):
SecuriteInfo.com.Trojan.Downloader.10124.UNOFFICIAL
Create hunting rule

Result
Verdict:
Suspicious
Maliciousness:

Behaviour
Launching a process
Сreating synchronization primitives
DNS request
Sending a custom TCP request
Running batch commands
Creating a process with a hidden window
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/62ab0014b42c4b10d840780f/reports/718265bf-c2ca-4066-8700-86a6dd7f0545/overview
Result
Verdict:
SUSPICIOUS
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Verdict:
Suspicious
Link:
https://analyze.intezer.com/analyses/dd6962ae-8edc-4af8-9f6b-25d8d656d52c
Result
Threat name:
AsyncRAT
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1014436
Signature
.NET source code contains potential unpacker
C2 URLs / IPs found in malware configuration
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
Malicious sample detected (through community Yara rule)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses an obfuscated file name to hide its real file extension (double extension)
Uses dynamic DNS services
Writes to foreign memory regions
Yara detected AsyncRAT
Yara detected Costura Assembly Loader
Yara detected Generic Downloader
Yara detected MSILDownloaderGeneric
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 646928 Sample: INV002374.pdf.exe Startdate: 16/06/2022 Architecture: WINDOWS Score: 100 62 bigman2021.duckdns.org 2->62 68 Malicious sample detected (through community Yara rule) 2->68 70 Yara detected MSILDownloaderGeneric 2->70 72 Yara detected AsyncRAT 2->72 74 9 other signatures 2->74 8 INV002374.pdf.exe 16 7 2->8         started        13 Tkray.exe 14 4 2->13         started        15 Tkray.exe 2->15         started        signatures3 process4 dnsIp5 64 cdn.discordapp.com 162.159.133.233, 443, 49752, 49848 CLOUDFLARENETUS United States 8->64 54 C:\Users\user\AppData\Roaming\...\Tkray.exe, PE32 8->54 dropped 56 C:\Users\user\...\Tkray.exe:Zone.Identifier, ASCII 8->56 dropped 58 C:\Users\user\...\INV002374.pdf.exe.log, ASCII 8->58 dropped 76 Writes to foreign memory regions 8->76 78 Injects a PE file into a foreign processes 8->78 17 InstallUtil.exe 2 8->17         started        20 cmd.exe 1 8->20         started        22 powershell.exe 15 8->22         started        24 BackgroundTransferHost.exe 8->24         started        80 Machine Learning detection for dropped file 13->80 26 cmd.exe 13->26         started        28 powershell.exe 13->28         started        30 InstallUtil.exe 13->30         started        66 192.168.2.1 unknown unknown 15->66 32 cmd.exe 15->32         started        34 4 other processes 15->34 file6 signatures7 process8 dnsIp9 60 bigman2021.duckdns.org 193.233.191.4, 49802, 49810, 49812 REDCOM-ASRedcomKhabarovskRussiaRU Russian Federation 17->60 36 conhost.exe 20->36         started        38 timeout.exe 1 20->38         started        40 conhost.exe 22->40         started        42 conhost.exe 26->42         started        44 timeout.exe 26->44         started        46 conhost.exe 28->46         started        48 conhost.exe 32->48         started        50 timeout.exe 32->50         started        52 conhost.exe 34->52         started        process10
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/aff09f337cf7a6feb5384d7f4013ea98efc7ce95ddec70dc8fc4f2a5b0293ad4/
Threat name:
ByteCode-MSIL.Downloader.Seraph
Create hunting rule
Status:
Malicious
First seen:
2022-06-16 10:04:08 UTC
File Type:
PE (.Net Exe)
Extracted files:
12
AV detection:
20 of 26 (76.92%)
Threat level:
  3/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=v7yj6m3466tp5njyjv7uae7ktdx4ptuv3xwhbxepytzklmbjhlka._file
Result
Malware family:
asyncrat
Create hunting rule
Score:
  10/10
Tags:
family:asyncrat botnet:default persistence rat suricata
Link:
https://tria.ge/reports/220616-l3xrtseabq/
Behaviour
Delays execution with timeout.exe
Modifies system certificate store
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Adds Run key to start application
Checks computer location settings
Async RAT payload
AsyncRat
suricata: ET MALWARE Generic AsyncRAT Style SSL Cert
suricata: ET MALWARE Observed Malicious SSL Cert (AsyncRAT Server)
Malware Config
C2 Extraction:
bigman2021.duckdns.org:6606
bigman2021.duckdns.org:7707
bigman2021.duckdns.org:8808
Unpacked files
SH256 hash:
aff09f337cf7a6feb5384d7f4013ea98efc7ce95ddec70dc8fc4f2a5b0293ad4
MD5 hash:
acf373dfac24db1a1a4024fe0768e032
SHA1 hash:
940986479b32ca2ea956f75ee9015d27f0447a61
Link:
https://www.unpac.me/results/a3c239a6-141b-40c9-88c9-b68608357341/
Malware family:
AsyncRAT
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/aff09f337cf7/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/aff09f337cf7a6feb5384d7f4013ea98efc7ce95ddec70dc8fc4f2a5b0293ad4

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:exploit_any_poppopret
Create hunting rule
Author:Jeff White [karttoon@gmail.com] @noottrak
Description:Identify POP -> POP -> RET opcodes for quick ROP Gadget creation in target binaries.
Rule name:INDICATOR_EXE_Packed_SmartAssembly
Create hunting rule
Author:ditekSHen
Description:Detects executables packed with SmartAssembly
Rule name:INDICATOR_SUSPICIOUS_EXE_ASEP_REG_Reverse
Create hunting rule
Author:ditekSHen
Description:Detects file containing reversed ASEP Autorun registry keys
Rule name:INDICATOR_SUSPICIOUS_EXE_DiscordURL
Create hunting rule
Author:ditekSHen
Description:Detects executables Discord URL observed in first stage droppers
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_Discord_Attachments_URL
Create hunting rule
Author:SECUINFRA Falcon Team
Description:Detects a PE file that contains an Discord Attachments URL. This is often used by Malware to download further payloads
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_PE_Discord_Attachment_Oct21_1
Create hunting rule
Author:Florian Roth
Description:Detects suspicious executable with reference to a Discord attachment (often used for malware hosting on a legitimate FQDN)
Reference:Internal Research
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.

Cape
Cape
https://www.capesandbox.com/analysis/280637/

Comments