MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b5e6f4ce68a0acec1f729cf36c44563f41025b36bb8a8425b0f4895d48f84eb5. 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: 13

Maldoc score: 33

Intelligence 13 IOCs YARA File information Comments

SHA256 hash:	b5e6f4ce68a0acec1f729cf36c44563f41025b36bb8a8425b0f4895d48f84eb5
SHA3-384 hash:	a30e781da9d936f9ecf3699de9d4ee09658ed0ac95b9b742638a674d60ee14ee4ddb25502feab2aef274aac212364760
SHA1 hash:	195cb3223a0ec93974092ef578459e07395981a3
MD5 hash:	2769a5ebf1e43e3b83a79b890a46532d
humanhash:	triple-fifteen-sad-tennessee
File name:	Odeme detaylari 08012022.xls
Download:	download sample
Signature	AsyncRAT Create hunting rule
File size:	331'776 bytes
First seen:	2022-01-08 07:45:43 UTC
Last seen:	2022-01-08 09:35:01 UTC
File type:	xls
MIME type:	application/vnd.ms-excel
ssdeep	6144:XxEtjPOtioVjDGUU1qfDlavx+W2QnA3BMjMiNrlBceXt945pqv/WqeCvtnSpFDbs:7mjMirlaet9oE1eC1nSp66RP1OjFH
TLSH	T1026401A07084C1ABCA5D47760DE2A5DAB927FC00BF7B87473559F32E1DB7A909903326
Reporter	abuse_ch
Tags:	AsyncRAT geo RAT TUR xls

abuse_ch

AsyncRAT payload URLs:
http://clavierimsiom.sytes.net/oijfihgiowinsopg/jffmigwnfbeaeopmguywfrvgqg.exe
http://clavierimsiom.sytes.net/uhzsdgcjhajbc/Mbxernq.bin

AsyncRAT C2s:
riemaldriendfri.sytes.net:7787
ancesucess.chickenkiller.com:7787
javierimssmarecolie.hopto.org:7787

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: 33

OLE dump

MalwareBazaar was able to identify 17 sections in this file using oledump:

Section ID	Section size	Section name
1	107 bytes	CompObj
2	244 bytes	DocumentSummaryInformation
3	204 bytes	SummaryInformation
4	296422 bytes	Workbook
5	645 bytes	_VBA_PROJECT_CUR/PROJECT
6	128 bytes	_VBA_PROJECT_CUR/PROJECTwm
7	833 bytes	_VBA_PROJECT_CUR/VBA/Module1
8	985 bytes	_VBA_PROJECT_CUR/VBA/Sheet1
9	985 bytes	_VBA_PROJECT_CUR/VBA/Sheet2
10	985 bytes	_VBA_PROJECT_CUR/VBA/Sheet3
11	11324 bytes	_VBA_PROJECT_CUR/VBA/ThisWorkbook
12	7337 bytes	_VBA_PROJECT_CUR/VBA/_VBA_PROJECT
13	1459 bytes	_VBA_PROJECT_CUR/VBA/__SRP_0
14	302 bytes	_VBA_PROJECT_CUR/VBA/__SRP_1
15	448 bytes	_VBA_PROJECT_CUR/VBA/__SRP_2
16	304 bytes	_VBA_PROJECT_CUR/VBA/__SRP_3
17	612 bytes	_VBA_PROJECT_CUR/VBA/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:

Type	Keyword	Description
AutoExec	Workbook_Open	Runs when the Excel Workbook is opened
Suspicious	Environ	May read system environment variables
Suspicious	Open	May open a file
Suspicious	Write	May write to a file (if combined with Open)
Suspicious	adodb.stream	May create a text file
Suspicious	SaveToFile	May create a text file
Suspicious	Shell	May run an executable file or a system command
Suspicious	vbNormalFocus	May run an executable file or a system command
Suspicious	WScript.Shell	May run an executable file or a system command
Suspicious	CreateObject	May create an OLE object
Suspicious	Shell.Application	May run an application (if combined with CreateObject)
Suspicious	microsoft.xmlhttp	May download files from the Internet
Suspicious	Chr	May attempt to obfuscate specific strings (use option --deobf to deobfuscate)
Suspicious	StrReverse	May attempt to obfuscate specific strings (use option --deobf to deobfuscate)
Suspicious	Xor	May attempt to obfuscate specific strings (use option --deobf to deobfuscate)
Suspicious	Hex Strings	Hex-encoded strings were detected, may be used to obfuscate strings (option --decode to see all)
Suspicious	Base64 Strings	Base64-encoded strings were detected, may be used to obfuscate strings (option --decode to see all) code and P-code are different, this may have been used to hide malicious code

Intelligence

File Origin

# of uploads :

# of downloads :

333

Origin country :

n/a

Vendor Threat Intelligence

Malware family:

n/a

ID:

File name:

Odeme detaylari 08012022.xls

Verdict:

Malicious activity

Analysis date:

2022-01-08 07:52:31 UTC

Tags:

macros macros-on-open loader

Link:

https://app.any.run/tasks/78ff441c-420c-469a-8811-f97a09bec5d4

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

Has a screenshot:

False

Contains macros:

False

Detection:

AsyncRat

Link:

https://www.capesandbox.com/analysis/217801/

Detection(s):

MiscreantPunch.EvilMacro.DL.170224.UNOFFICIAL

TwinWave.EvilDoc.CROAndTheTangerineDream.M1.20200630.UNOFFICIAL

TwinWave.EvilDoc.StatusIsLikeAFriend.20210201.UNOFFICIAL

TwinWave.EvilDoc.DidntIBlowYourMindThisTime.20210922.UNOFFICIAL

Result

Verdict:

Malware

Maliciousness:

Behaviour

Searching for the window

DNS request

Sending a custom TCP request

Creating a window

Сreating synchronization primitives

Connecting to a non-recommended domain

Creating a file in the %AppData% subdirectories

Launching a process

Creating a process with a hidden window

Sending an HTTP GET request

Unauthorized injection to a recently created process

Creating a process from a recently created file

Result

Verdict:

Malicious

File Type:

Legacy Excel File with Macro

Link:

https://app.docguard.net/b5e6f4ce68a0acec1f729cf36c44563f41025b36bb8a8425b0f4895d48f84eb5/results/dashboard

Document image

Image:

Download PNG

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

evasive excel.exe macros macros-on-open remote.exe replace.exe vbastomped

Link:

https://www.filescan.io/uploads/61d9414002e388f9fdb5acd0/reports/1d6c3a87-8855-4c48-89c5-86d872a0369a/overview

Result

Verdict:

MALICIOUS

Link:

https://labs.inquest.net/dfi/sha256/b5e6f4ce68a0acec1f729cf36c44563f41025b36bb8a8425b0f4895d48f84eb5

Details

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.

Shell.Application Object

Detected the instantiation of Shell Application object within the macro.

Macro Contains Suspicious String

Detected a macro with a suspicious string. Suspicious strings include privileged function calls, obfuscations, odd registry keys, etc...

Document With Minimal Content

Document contains less than 1 kilobyte of semantic information.

Result

Threat name:

AsyncRAT

Detection:

malicious

Classification:

troj.expl.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/917110

Signature

.NET source code contains potential unpacker

Allocates memory in foreign processes

Antivirus / Scanner detection for submitted sample

Antivirus detection for URL or domain

C2 URLs / IPs found in malware configuration

Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)

Document contains an embedded VBA macro with suspicious strings

Document contains an embedded VBA with functions possibly related to ADO stream file operations

Document contains an embedded VBA with functions possibly related to HTTP operations

Document contains VBA stomped code (only p-code) potentially bypassing AV detection

Document exploit detected (creates forbidden files)

Document exploit detected (drops PE 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

Multi AV Scanner detection for dropped file

Office process drops PE file

Potential dropper URLs found in powershell memory

Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines)

Sigma detected: MS Office Product Spawning Exe in User Dir

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 AsyncRAT

Behaviour

Behavior Graph:

Download SVG

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/b5e6f4ce68a0acec1f729cf36c44563f41025b36bb8a8425b0f4895d48f84eb5/

Threat name:

Script-Macro.Trojan.Heuristic

Status:

Malicious

First seen:

2022-01-08 07:46:13 UTC

File Type:

Document

Extracted files:

AV detection:

18 of 28 (64.29%)

Threat level:

2/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=wxtpjttiucwoyh3sttzwyrcwh5aqewzwxofiijnq6sev2shyj22q._file

Result

Malware family:

asyncrat

Score:

10/10

Tags:

family:asyncrat botnet:general macro macro_on_action persistence rat

Link:

https://tria.ge/reports/220108-jlztracha3/

Behaviour

Checks processor information in registry

Enumerates system info in registry

Modifies Internet Explorer settings

Modifies registry class

Suspicious behavior: AddClipboardFormatListener

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Office loads VBA resources, possible macro or embedded object present

Enumerates physical storage devices

Suspicious use of SetThreadContext

Adds Run key to start application

Loads dropped DLL

Downloads MZ/PE file

Executes dropped EXE

Async RAT payload

AsyncRat

Malware Config

C2 Extraction:

riemaldriendfri.sytes.net:7787
ancesucess.chickenkiller.com:7787
javierimssmarecolie.hopto.org:7787

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/b5e6f4ce68a0/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/b5e6f4ce68a0acec1f729cf36c44563f41025b36bb8a8425b0f4895d48f84eb5

File information

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

Malspam

AsyncRAT

xls b5e6f4ce68a0acec1f729cf36c44563f41025b36bb8a8425b0f4895d48f84eb5

(this sample)

URLhaus

https://urlhaus.abuse.ch/host/clavierimsiom.sytes.net/

Delivery method

Distributed via e-mail attachment

Cape

https://www.capesandbox.com/analysis/217801/

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