MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4987b259e5ff095fdb679b905093b4f888a3d88b4a3c061e27ab7fa8f36b2632. 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


Maldoc score: 13


Intelligence 12 IOCs YARA File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4987b259e5ff095fdb679b905093b4f888a3d88b4a3c061e27ab7fa8f36b2632
SHA3-384 hash: 678a5e466707e07357605f481291f90b44185e1b9076fa3beb6f9ab73771843beddecc8dbdc89a0e8758d52f6ad960f4
SHA1 hash: 0012962fdd83c6ca591d9912a2435942200e938a
MD5 hash: 517a311aff52327605631823207279e0
humanhash: jersey-east-black-sweet
File name:268061083205_27043215_20220104.xlsm
Download: download sample
Signature AsyncRAT
Create hunting rule
File size:53'450 bytes
First seen:2022-01-06 08:07:01 UTC
Last seen:Never
File type:Excel file xlsm
MIME type:application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
ssdeep 1536:29ONvicMn2XR9Qh9xbIwFivTcIl33nl989OBNUJb:2+icMn2XR9Qh96L/3nlw+cb
TLSH T1A633F1B6D94B6CC7D4168238355A700946BB0EDE43F7D6CBEA5802C90722D4586AFECF
Reporter abuse_ch
Tags:AsyncRAT xlsm


Avatar
abuse_ch
Payload URL:
http://ddl8.data.hu/get/356815/13148200/joge.exe

Office OLE Information

This malware samples appears to be an Office document. The following table provides more information about this document using oletools and oledump.

OLE id
Maldoc score: 13
OLE dump

MalwareBazaar was able to identify 8 sections in this file using oledump:

Section IDSection sizeSection name
A1529 bytesPROJECT
A289 bytesPROJECTwm
A3169 bytesVBA/Sheet1
A41075 bytesVBA/ThisWorkbook
A5171 bytesVBA/Workbook
A67 bytesVBA/_VBA_PROJECT
A7228 bytesVBA/dir
OLE vba

MalwareBazaar was able to extract and deobfuscate VBA script(s) the following information from OLE objects embedded in this file using olevba:

TypeKeywordDescription
AutoExecWorkbook_ActivateRuns when the Excel Workbook is opened
IOCJetvltrbngkjaw.batExecutable file name
SuspiciousOpenMay open a file
SuspiciousOutputMay write to a file (if combined with Open)
SuspiciousShellMay run an executable file or a system command
SuspiciousStrReverseMay attempt to obfuscate specific strings (use option --deobf to deobfuscate)
SuspiciousHex StringsHex-encoded strings were detected, may be used to obfuscate strings (option --decode to see all)
SuspiciousBase64 StringsBase64-encoded strings were detected, may be used to obfuscate strings (option --decode to see all)

Intelligence

File Origin
# of uploads :
1
# of downloads :
196
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
268061083205_27043215_20220104.xlsm
Verdict:
Malicious activity
Analysis date:
2022-01-06 08:12:27 UTC
Tags:
macros macros-on-open loader
Link:
https://app.any.run/tasks/f277bff8-a12f-45e7-b1e0-4eca42cf067f

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
File type:
application/vnd.ms-excel.sheet.macroEnabled.12
Has a screenshot:
False
Contains macros:
True
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/217525/
Detection(s):
TwinWave.EvilDoc.DOCXRSTRGOOD.POWERSHELL.REV.200317.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.CancionDelMariachi.20211020.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.DOCXRSTRGOOD.START_PROC.211028B64.1.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.DOCXRSTRGOOD.ENV_APPDATA.211028B64.7.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.DOCXRSTRGOOD.ENV_APPDATA.211028B64.8.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
DNS request
Sending a custom TCP request
Creating a window
Сreating synchronization primitives
Creating a file
Creating a process with a hidden window
Launching a process
Running batch commands by exploiting the app vulnerability
Launching a file downloaded from the Internet
Result
Verdict:
Malicious
File Type:
Excel File with Macro
Link:
https://app.docguard.net/4987b259e5ff095fdb679b905093b4f888a3d88b4a3c061e27ab7fa8f36b2632/results/dashboard
Document image
Image:
Download PNG
Document image
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
cmd macros macros-on-open powershell
Link:
https://www.filescan.io/uploads/61d6a328135d97804c0eec00/reports/77c9d6d3-7057-40be-aadc-13be6d9a95d3/overview
Result
Verdict:
MALICIOUS
Link:
https://labs.inquest.net/dfi/sha256/4987b259e5ff095fdb679b905093b4f888a3d88b4a3c061e27ab7fa8f36b2632
Details
Base64 Encoded Powershell Directives
Detected one or more base64 encoded Powershell directives.
Macro with Startup Hook
Detected macro logic that will automatically execute on document open. Most malware contains some execution hook.
Macro with File System Write
Detected macro logic that can write data to the file system.
Macro Contains Suspicious String
Detected a macro with a suspicious string. Suspicious strings include privileged function calls, obfuscations, odd registry keys, etc...
Base64 Encoded URL
Detected an ANSI or UNICODE http:// or https:// base64 encoded URL prefix.
Document With Minimal Content
Document contains less than 1 kilobyte of semantic information.
Result
Threat name:
AsyncRAT
Create hunting rule
Detection:
malicious
Classification:
bank.troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/916199
Signature
.NET source code contains potential unpacker
Allocates memory in foreign processes
Antivirus detection for dropped file
Document contains an embedded VBA macro which may execute processes
Document contains VBA stomped code (only p-code) potentially bypassing AV detection
Document exploit detected (creates forbidden files)
Document exploit detected (process start blacklist hit)
Encrypted powershell cmdline option found
Found malware configuration
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious encrypted Powershell command line found
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Potential dropper URLs found in powershell memory
Powershell drops PE file
Sigma detected: Bad Opsec Defaults Sacrificial Processes With Improper Arguments
Sigma detected: Microsoft Office Product Spawning Windows Shell
Sigma detected: Suspicious Encoded PowerShell Command Line
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected AsyncRAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 548678 Sample: 268061083205_27043215_20220... Startdate: 06/01/2022 Architecture: WINDOWS Score: 100 60 Found malware configuration 2->60 62 Multi AV Scanner detection for submitted file 2->62 64 Yara detected AntiVM3 2->64 66 11 other signatures 2->66 9 EXCEL.EXE 76 17 2->9         started        13 jky.exe 1 2->13         started        15 jky.exe 1 2->15         started        process3 file4 38 C:\Users\user\Documents\Jetvltrbngkjaw.bat, ASCII 9->38 dropped 40 C:\...\~$268061083205_27043215_20220104.xlsm, data 9->40 dropped 42 268061083205_27043...20104.xlsm.. (copy), Microsoft 9->42 dropped 68 Document exploit detected (creates forbidden files) 9->68 17 cmd.exe 9->17         started        70 Antivirus detection for dropped file 13->70 72 Multi AV Scanner detection for dropped file 13->72 74 Machine Learning detection for dropped file 13->74 20 powershell.exe 7 13->20         started        76 Encrypted powershell cmdline option found 15->76 22 powershell.exe 7 15->22         started        signatures5 process6 signatures7 56 Malicious encrypted Powershell command line found 17->56 58 Encrypted powershell cmdline option found 17->58 24 powershell.exe 12 7 17->24         started        process8 dnsIp9 52 store8.data.hu 217.65.97.74, 49165, 80 MAGYAR-TELEKOM-MAIN-ASMagyarTelekomNyrtHU Hungary 24->52 54 ddl8.data.hu 24->54 44 C:\Users\...\Fqhzubbwtoobtrkeykkiewoy.exe, PE32 24->44 dropped 78 Powershell drops PE file 24->78 29 Fqhzubbwtoobtrkeykkiewoy.exe 1 3 24->29         started        file10 signatures11 process12 file13 46 C:\Users\user\AppData\Roaming\jky.exe, PE32 29->46 dropped 48 C:\Users\user\AppData\Local\Temp\RegAsm.exe, PE32 29->48 dropped 80 Antivirus detection for dropped file 29->80 82 Multi AV Scanner detection for dropped file 29->82 84 Machine Learning detection for dropped file 29->84 86 4 other signatures 29->86 33 RegAsm.exe 4 29->33         started        36 powershell.exe 6 29->36         started        signatures14 process15 dnsIp16 50 212.192.241.87, 49166, 8754 RAPMSB-ASRU Russian Federation 33->50
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/4987b259e5ff095fdb679b905093b4f888a3d88b4a3c061e27ab7fa8f36b2632/
Threat name:
Document-Word.Trojan.Valyria
Create hunting rule
Status:
Malicious
First seen:
2022-01-05 02:15:46 UTC
File Type:
Document
Extracted files:
27
AV detection:
16 of 43 (37.21%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=jgd3ewpf74ev7w3htoifbe5u7cekhwelji6amhrhvn72r43leyza._file
Result
Malware family:
asyncrat
Create hunting rule
Score:
  10/10
Tags:
family:asyncrat botnet:ro macro persistence rat
Link:
https://tria.ge/reports/220106-jzzqxabdfk/
Behaviour
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Checks processor information in registry
Enumerates system info in registry
Modifies Internet Explorer settings
Modifies registry class
NTFS ADS
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: RenamesItself
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Office loads VBA resources, possible macro or embedded object present
Enumerates physical storage devices
Suspicious use of SetThreadContext
Adds Run key to start application
Deletes itself
Loads dropped DLL
Blocklisted process makes network request
Downloads MZ/PE file
Executes dropped EXE
Async RAT payload
AsyncRat
Process spawned unexpected child process
Malware Config
C2 Extraction:
212.192.241.87:8754
Dropper Extraction:
http://ddl8.data.hu/get/356815/13148200/joge.exe
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/4987b259e5ff095fdb679b905093b4f888a3d88b4a3c061e27ab7fa8f36b2632

File information

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

  
URLhaus
https://urlhaus.abuse.ch/url/1952690/
Cape
Cape
https://www.capesandbox.com/analysis/217525/

Comments