MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 85b4167417d416880d3e9f1ff438e1e5b125ceb28de4e3ebd9b5725717815157. 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: 14


Intelligence 14 IOCs YARA 24 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 85b4167417d416880d3e9f1ff438e1e5b125ceb28de4e3ebd9b5725717815157
SHA3-384 hash: 8e0b6ca655746af9d01c94c94beafa055cbe72f63fe08864ac340a9d8d1e24d5fff6495f2645e6e983ff8f2373101b1c
SHA1 hash: dde27c5d0067443b82d13769e77874f76bf9ef22
MD5 hash: 3ce23e92922211a15efd24940cfd77e3
humanhash: autumn-lithium-michigan-tango
File name:Comprobante.exe
Download: download sample
Signature AsyncRAT
Create hunting rule
File size:668'639 bytes
First seen:2023-10-27 06:40:20 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 00be6e6c4f9e287672c8301b72bdabf3 (116 x RedLineStealer, 70 x AsyncRAT, 55 x AgentTesla)
ssdeep 12288:PcrNS33L10QdrXPLWwrwn56HLOpu7WjcchzSE767P6:WNA3R5drXPbrw56rO/Hhf78i
Threatray 2'603 similar samples on MalwareBazaar
TLSH T148E44681A6D14761E56E193225ADBAF094EDFD2C1A20CDCF62F4EB58C53334FD213A62
TrID 89.0% (.EXE) WinRAR Self Extracting archive (4.x-5.x) (265042/9/39)
3.5% (.EXE) Win64 Executable (generic) (10523/12/4)
2.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
1.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
1.5% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon 70d4aacccc8ac460 (8 x AsyncRAT, 2 x QuasarRAT, 1 x njrat)
Reporter abuse_ch
Tags:AsyncRAT exe RAT


Avatar
abuse_ch
AsyncRAT C2:
185.216.71.238:8008

Intelligence

File Origin
# of uploads :
1
# of downloads :
364
Origin country :
NL NL
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/456655/
Detection(s):
SecuriteInfo.com.Troj.NanoCo_TZ.22029.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Searching for the window
Сreating synchronization primitives
Searching for synchronization primitives
Creating a file
Running batch commands
Creating a process from a recently created file
Creating a process with a hidden window
Creating a file in the %AppData% directory
Creating a file in the %temp% directory
Launching a process
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Enabling autorun by creating a file
Gathering data
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
greyware installer lolbin overlay packed replace setupapi sfx shdocvw shell32
Link:
https://www.filescan.io/uploads/653b5b7f72356e4f29e7dab5/reports/980c11db-b40f-4ff3-9633-4589fd787f24/overview
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/85b4167417d416880d3e9f1ff438e1e5b125ceb28de4e3ebd9b5725717815157
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.
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/da9b836b-b4fc-4af3-8b48-bfc57933b258
Result
Threat name:
AsyncRAT
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1333121
Signature
Antivirus detection for dropped file
Detected unpacking (changes PE section rights)
Found malware configuration
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
PE file contains section with special chars
PE file has nameless sections
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
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1333121 Sample: Comprobante.exe Startdate: 27/10/2023 Architecture: WINDOWS Score: 100 60 tndeatcamside.sytes.net 2->60 62 gnbeatscagig.sytes.net 2->62 74 Found malware configuration 2->74 76 Malicious sample detected (through community Yara rule) 2->76 78 Multi AV Scanner detection for submitted file 2->78 80 4 other signatures 2->80 13 Comprobante.exe 7 2->13         started        16 crcss.exe 1 2->16         started        signatures3 process4 file5 58 C:\Users\user\OneDrive\okcfnkjsbf.sfx.exe, PE32 13->58 dropped 19 cmd.exe 1 13->19         started        66 Antivirus detection for dropped file 16->66 68 Multi AV Scanner detection for dropped file 16->68 70 Machine Learning detection for dropped file 16->70 72 Injects a PE file into a foreign processes 16->72 22 crcss.exe 16->22         started        signatures6 process7 signatures8 82 Uses schtasks.exe or at.exe to add and modify task schedules 19->82 24 okcfnkjsbf.sfx.exe 6 19->24         started        28 conhost.exe 19->28         started        process9 file10 56 C:\Users\user\OneDrive\okcfnkjsbf.exe, PE32 24->56 dropped 86 Multi AV Scanner detection for dropped file 24->86 30 okcfnkjsbf.exe 1 24->30         started        signatures11 process12 signatures13 88 Antivirus detection for dropped file 30->88 90 Multi AV Scanner detection for dropped file 30->90 92 Detected unpacking (changes PE section rights) 30->92 94 3 other signatures 30->94 33 okcfnkjsbf.exe 6 30->33         started        process14 file15 54 C:\Users\user\AppData\Roaming\crcss.exe, PE32 33->54 dropped 36 cmd.exe 1 33->36         started        38 cmd.exe 1 33->38         started        process16 process17 40 crcss.exe 36->40         started        43 conhost.exe 36->43         started        45 timeout.exe 1 36->45         started        47 conhost.exe 38->47         started        49 schtasks.exe 1 38->49         started        signatures18 84 Injects a PE file into a foreign processes 40->84 51 crcss.exe 40->51         started        process19 dnsIp20 64 185.216.71.238, 49713, 49714, 49715 CLOUDCOMPUTINGDE Germany 51->64
Score:
97%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/85b4167417d416880d3e9f1ff438e1e5b125ceb28de4e3ebd9b5725717815157
Detection:
asyncrat
Create hunting rule
Link:
https://mwdb.cert.pl/sample/85b4167417d416880d3e9f1ff438e1e5b125ceb28de4e3ebd9b5725717815157/
Threat name:
Win32.Backdoor.AsyncRAT
Create hunting rule
Status:
Malicious
First seen:
2023-10-26 20:39:22 UTC
File Type:
PE (Exe)
Extracted files:
32
AV detection:
20 of 34 (58.82%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=qw2bm5ax2qliqdj6t4p7iohb4wysltvsrxsoh26zwvzfof4bkflq._file
Verdict:
malicious
Label(s):
asyncrat
Create hunting rule
Similar samples:
20d829712638e1cf6dac27bdcc57f247a24a7de8fba941568dd41e869d84f75c
AsyncRAT
4a72f887ce916e9eaef552c54fdcdc51dd610b3b5c92528956341281bdcbed82
AsyncRAT
4c000abca2a926307a6a1d42a27694ebd5668643e4c5ca788cc5f162f8edfe72
AsyncRAT
63444cb05e0cb690d2bde116eb1d2f6f07e3db80bd51cf53e423631720999b62
AsyncRAT
6a9d3d2a4eaa850159fcddf238be20521d711c2ee75bfa01145cca1e9bacfae5
AsyncRAT
6f9f2414e5ef9896fcef55deb74992200a418221aa6a169a76c688c82e9d7a5b
AsyncRAT
a16f217f8f881202ee1e2ce7dc8d5cc0b8f0b48efdfa520ae9832fbf7a9a46a7
AsyncRAT
c8f3375851e936855757e0829be393ccbcd6324072bc63496817b66fdf0dd971
AsyncRAT
f372cfc59d3e2235cc22911f71ca105b1d602fb419c9af2d9d03e7d91ee2eea6
AsyncRAT
+ 2'593 additional samples on MalwareBazaar
Result
Malware family:
asyncrat
Create hunting rule
Score:
  10/10
Tags:
family:asyncrat botnet:default rat
Link:
https://tria.ge/reports/231027-hfrqhsed38/
Behaviour
Creates scheduled task(s)
Delays execution with timeout.exe
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Drops file in Program Files directory
Suspicious use of SetThreadContext
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Async RAT payload
AsyncRat
Malware Config
C2 Extraction:
185.216.71.238:8008
185.216.71.238:7708
185.216.71.238:9909
tndeatcamside.sytes.net:8008
tndeatcamside.sytes.net:7708
tndeatcamside.sytes.net:9909
gnbeatscagig.sytes.net:8008
gnbeatscagig.sytes.net:7708
gnbeatscagig.sytes.net:9909
Unpacked files
SH256 hash:
ae9b959a452237bfca247301c3599de9ec918d279e24e3d084a9038f96d5d6a4
MD5 hash:
5049719a49d991e519b7312b871e6fba
SHA1 hash:
4f1bd0b2a9078ed25c46108c67b970040f238c03
Link:
https://www.unpac.me/results/c7fbc124-bbba-46c6-b976-4469a442db3f/
SH256 hash:
032b264db63152e2d5b57cdd3524fd2823bcbb7f0ca2e9a37e3e994a031b405f
MD5 hash:
368542feeae71603d49dd5536bb55d3f
SHA1 hash:
8d8523a35b544666bfcbd86de118edf36b510750
Link:
https://www.unpac.me/results/c7fbc124-bbba-46c6-b976-4469a442db3f/
SH256 hash:
236562dbb51b2842fd68ee2373c8de20f8054f7d17c0e042d250317efd95b796
MD5 hash:
dce2964bf7b19e567cc6eef57f7df157
SHA1 hash:
6070426ae58b8124114abbe4060a36c5fadceca8
Detections:
AsyncRAT
Create hunting rule
win_asyncrat_w0
Create hunting rule
Link:
https://www.unpac.me/results/c7fbc124-bbba-46c6-b976-4469a442db3f/
SH256 hash:
85b4167417d416880d3e9f1ff438e1e5b125ceb28de4e3ebd9b5725717815157
MD5 hash:
3ce23e92922211a15efd24940cfd77e3
SHA1 hash:
dde27c5d0067443b82d13769e77874f76bf9ef22
Link:
https://www.unpac.me/results/c7fbc124-bbba-46c6-b976-4469a442db3f/
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/85b4167417d416880d3e9f1ff438e1e5b125ceb28de4e3ebd9b5725717815157

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:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__RemoteAPI
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:INDICATOR_SUSPICIOUS_EXE_ASEP_REG_Reverse
Create hunting rule
Author:ditekSHen
Description:Detects file containing reversed ASEP Autorun registry keys
Rule name:maldoc_find_kernel32_base_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:malware_asyncrat
Create hunting rule
Description:detect AsyncRat in memory
Reference:https://github.com/NYAN-x-CAT/AsyncRAT-C-Sharp
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:msil_suspicious_use_of_strreverse
Create hunting rule
Author:dr4k0nia
Description:Detects mixed use of Microsoft.CSharp and VisualBasic to use StrReverse
Rule name:Multifamily_RAT_Detection
Create hunting rule
Author:Lucas Acha (http://www.lukeacha.com)
Description:Generic Detection for multiple RAT families, PUPs, Packers and suspicious executables
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:NETexecutableMicrosoft
Create hunting rule
Author:malware-lu
Rule name:Njrat
Create hunting rule
Author:botherder https://github.com/botherder
Description:Njrat
Rule name:pe_imphash
Create hunting rule
Rule name:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SelfExtractingRAR
Create hunting rule
Author:Xavier Mertens
Description:Detects an SFX archive with automatic script execution
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants
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_bytecodes
Create hunting rule
Author:Matthew @ Embee_Research
Description:Detects bytecodes present in unobfuscated AsyncRat Samples. Rule may also pick up on other Asyncrat-derived malware (Dcrat/venom etc)
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/456655/

Comments