MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 e648ef7335352f54a20f4107dfa3545126fbbbcc1019c2abad619ec1cbf8fd0b. 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: 13


Intelligence 13 IOCs YARA File information Comments
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SHA256 hash: e648ef7335352f54a20f4107dfa3545126fbbbcc1019c2abad619ec1cbf8fd0b
SHA3-384 hash: 2298d45fe6135eeb9118587be37b3ebcab725b0ba158ad540b12663cbf3b8fb6b3534f36f0f9359ac04b13b66511f9c7
SHA1 hash: bea2171ade39ccc8f40cc168c79ca629e8663066
MD5 hash: c326920b401ea5b61425d83208727b0e
humanhash: floor-montana-skylark-green
File name:Cerere de oferta Startgroup S.R.L.23.12.2021.xls
Download: download sample
Signature AsyncRAT
Create hunting rule
File size:73'216 bytes
First seen:2021-12-24 08:06:56 UTC
Last seen:Never
File type:Excel file xls
MIME type:application/vnd.ms-excel
ssdeep 1536:Mk3hOdsylKlgryzc4bNhZFGzE+cL2knA2f8JG298yC72t4S0SPkIYiCEoikdL:Mk3hOdsylKlgryzc4bNhZFGzE+cL2knl
TLSH T1E0635B65BA46E465DA5D47354CE6C59A6B23FC002E3E43533224F32E6EB7AE08D1370B
Reporter abuse_ch
Tags:AsyncRAT xls

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 11 sections in this file using oledump:

Section IDSection sizeSection name
1107 bytesCompObj
2244 bytesDocumentSummaryInformation
3208 bytesSummaryInformation
458852 bytesWorkbook
5462 bytes_VBA_PROJECT_CUR/PROJECT
686 bytes_VBA_PROJECT_CUR/PROJECTwm
7978 bytes_VBA_PROJECT_CUR/VBA/Module1
8991 bytes_VBA_PROJECT_CUR/VBA/Sheet1
92633 bytes_VBA_PROJECT_CUR/VBA/ThisWorkbook
102721 bytes_VBA_PROJECT_CUR/VBA/_VBA_PROJECT
11562 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:

TypeKeywordDescription
AutoExecWorkbook_OpenRuns when the Excel Workbook is opened
SuspiciousOpenMay open a file
SuspiciousOutputMay write to a file (if combined with Open)
Suspiciousshell32May run an executable file or a system command
SuspiciousLibMay run code from a DLL
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 :
206
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Cerere de oferta Startgroup S.R.L.23.12.2021.xls
Verdict:
Malicious activity
Analysis date:
2021-12-24 08:12:51 UTC
Tags:
macros macros-on-open loader trojan rat asyncrat
Link:
https://app.any.run/tasks/de29610e-e048-4531-a643-c572b3266420

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:
True
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/216113/
Detection(s):
TwinWave.EvilDoc.DOCXSTRGOOD.HTTP
Create hunting rule

TwinWave.EvilDoc.DOCXRSTRGOOD.START-BITSTRANSFER.210729.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.DOCXSTRGOOD..EXE.211019.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Сreating synchronization primitives
Creating a file
DNS request
Launching a process by exploiting the app vulnerability
Result
Verdict:
Malicious
File Type:
Legacy Excel File with Macro
Link:
https://app.docguard.net/e648ef7335352f54a20f4107dfa3545126fbbbcc1019c2abad619ec1cbf8fd0b/results/dashboard
Document image
Image:
Download PNG
Document image
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
macros macros-on-open
Link:
https://www.filescan.io/uploads/61c57fadec6c6c14a9eea090/reports/6e807375-8f5f-409d-ab7b-b45c5a9e7b2f/overview
Result
Verdict:
SUSPICIOUS
Link:
https://labs.inquest.net/dfi/sha256/e648ef7335352f54a20f4107dfa3545126fbbbcc1019c2abad619ec1cbf8fd0b
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.
Macro Contains Suspicious String
Detected a macro with a suspicious string. Suspicious strings include privileged function calls, obfuscations, odd registry keys, etc...
Macro with DLL Reference
Detected macro logic that will load additional functionality from Dynamically Linked Libraries (DLLs). While not explicitly malicious, this is a common tactic for accessing APIs that are not otherwised exposed via Visual Basic for Applications (VBA).
Result
Threat name:
AsyncRAT
Create hunting rule
Detection:
malicious
Classification:
expl.evad.troj
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/912380
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 an embedded VBA macro with suspicious strings
Document exploit detected (creates forbidden files)
Document exploit detected (process start blacklist hit)
Found malware configuration
Injects a PE file into a foreign processes
Injects code into the Windows Explorer (explorer.exe)
Machine Learning detection for sample
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Bad Opsec Defaults Sacrificial Processes With Improper Arguments
Sigma detected: Execution from Suspicious Folder
Sigma detected: Suspicious Bitsadmin Job via PowerShell
Tries to detect sandboxes / dynamic malware analysis system (file name check)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Writes to foreign memory regions
Yara detected AsyncRAT
Yara detected Obfuscated Powershell
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 544854 Sample: Cerere de oferta Startgroup... Startdate: 24/12/2021 Architecture: WINDOWS Score: 100 44 Found malware configuration 2->44 46 Multi AV Scanner detection for submitted file 2->46 48 Yara detected AsyncRAT 2->48 50 10 other signatures 2->50 9 explorer.exe 2->9         started        11 EXCEL.EXE 26 23 2->11         started        15 gtp.exe 2->15         started        process3 file4 17 cmd.exe 1 9->17         started        38 Cerere de oferta S....R.L.23.12.2021.xls, Composite 11->38 dropped 40 C:\Users\Public\dssdd.cmd, ASCII 11->40 dropped 60 Document exploit detected (creates forbidden files) 11->60 62 Injects code into the Windows Explorer (explorer.exe) 11->62 19 explorer.exe 1 11->19         started        64 Antivirus detection for dropped file 15->64 66 Multi AV Scanner detection for dropped file 15->66 signatures5 process6 process7 21 powershell.exe 28 17->21         started        23 conhost.exe 17->23         started        process8 25 whetheryourself.exe 1 3 21->25         started        file9 34 C:\Users\user\AppData\Roaming\gtp.exe, PE32 25->34 dropped 36 C:\Users\user\AppData\Local\Temp\RegAsm.exe, PE32 25->36 dropped 52 Tries to detect sandboxes / dynamic malware analysis system (file name check) 25->52 54 Writes to foreign memory regions 25->54 56 Allocates memory in foreign processes 25->56 58 Injects a PE file into a foreign processes 25->58 29 RegAsm.exe 2 25->29         started        32 RegAsm.exe 25->32         started        signatures10 process11 dnsIp12 42 2.56.57.68, 49840, 8754 GBTCLOUDUS Netherlands 29->42
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/e648ef7335352f54a20f4107dfa3545126fbbbcc1019c2abad619ec1cbf8fd0b/
Threat name:
Script-Macro.Dropper.Powdow
Create hunting rule
Status:
Malicious
First seen:
2021-12-23 12:50:44 UTC
File Type:
Document
Extracted files:
16
AV detection:
12 of 28 (42.86%)
Threat level:
  3/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=4zeo64zvguxvjiqpied57i2uketpxo6mcam4fk5nmgpmds7y7ufq._file
Result
Malware family:
asyncrat
Create hunting rule
Score:
  10/10
Tags:
family:asyncrat botnet:ro macro macro_on_action persistence rat
Link:
https://tria.ge/reports/211224-jz1m7scfc8/
Behaviour
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
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
Office loads VBA resources, possible macro or embedded object present
Drops file in System32 directory
Suspicious use of SetThreadContext
Adds Run key to start application
Downloads MZ/PE file
Executes dropped EXE
Async RAT payload
AsyncRat
Process spawned unexpected child process
Malware Config
C2 Extraction:
2.56.57.68:8754
Dropper Extraction:
http://ddl7.data.hu/get/375461/13126942/jogd.exe
Malware family:
AsyncRAT
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/e648ef733535/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/e648ef7335352f54a20f4107dfa3545126fbbbcc1019c2abad619ec1cbf8fd0b

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/1916578/
Cape
Cape
https://www.capesandbox.com/analysis/216113/

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