MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ce4085be9c0cea2fdaa6145e86166b051222fcc96eac12e1668d803a6b97ebfe. 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


RemcosRAT


Vendor detections: 13


Maldoc score: 8


Intelligence 13 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: ce4085be9c0cea2fdaa6145e86166b051222fcc96eac12e1668d803a6b97ebfe
SHA3-384 hash: 235e2feab7496e4e34c1e393c0bd9bca70542f4c06333be4ae4a2b96d69d9028abff4ab392c57e2f85af3f4d3219b4ee
SHA1 hash: b9267d4a42b84f7f0798820dd9a59be020672a8a
MD5 hash: a7d04a4e89171657d2a5c6fd29a5ff65
humanhash: timing-six-don-red
File name:USD$19,959.92_ACH_Automation_M A Medical Dermatology & Esthetics.xls
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:33'792 bytes
First seen:2022-10-03 17:05:59 UTC
Last seen:Never
File type:Excel file xls
MIME type:application/vnd.ms-excel
ssdeep 768:Agk3hOdsylKlgxopeiBNhZFGzE+cL2kdAJlMHzvuPuK:bk3hOdsylKlgxopeiBNhZFGzE+cL2kdu
TLSH T1BDE25FA2B3D6D806D98503764CE7C7D62727FC919F93834B3289F71E1F71A808A12617
TrID 46.5% (.XLS) Microsoft Excel sheet (alternate) (56500/1/4)
26.7% (.XLS) Microsoft Excel sheet (32500/1/3)
20.1% (.XLS) Microsoft Excel sheet (alternate) (24500/1/2)
6.5% (.) Generic OLE2 / Multistream Compound (8000/1)
Reporter abuse_ch
Tags:nVpn RAT RemcosRAT xls


Avatar
abuse_ch
RemcosRAT payload URLs:
http://tpergtbe2.ml/duyiojy/Encrypted Client OG.jpg
http://tpergtbe2.ml/duyiojy/attack.txt
http://tpergtbe2.ml/duyiojy/Protected Client.js

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: 8
OLE dump

MalwareBazaar was able to identify 14 sections in this file using oledump:

Section IDSection sizeSection name
1107 bytesCompObj
2244 bytesDocumentSummaryInformation
3216 bytesSummaryInformation
416921 bytesWorkbook
5420 bytes_VBA_PROJECT_CUR/PROJECT
659 bytes_VBA_PROJECT_CUR/PROJECTwm
71329 bytes_VBA_PROJECT_CUR/VBA/ThisWorkbook
82895 bytes_VBA_PROJECT_CUR/VBA/_VBA_PROJECT
91334 bytes_VBA_PROJECT_CUR/VBA/__SRP_0
10177 bytes_VBA_PROJECT_CUR/VBA/__SRP_1
11392 bytes_VBA_PROJECT_CUR/VBA/__SRP_2
12348 bytes_VBA_PROJECT_CUR/VBA/__SRP_3
133179 bytes_VBA_PROJECT_CUR/VBA/ahsvm
14523 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_ActivateRuns when the Excel Workbook is opened
AutoExecWorksheet_ChangeRuns when the file is opened and ActiveX objects trigger events
SuspiciousCreateObjectMay create an OLE object
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 :
314
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/316189/
Detection(s):
TwinWave.EvilDoc.CROFuncDetonatorPicturesOfYou.20200611.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.SpawnInstancesTheBeautifulOnes.20210222.UNOFFICIAL
Create hunting rule

Sanesecurity.Shelter.Malware.BadMacro.httprevps.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.DOCXSTRGOOD._IEX.210408.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.TakeMeHomeTonight.20210923.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.OutRunThis.20220121.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Сreating synchronization primitives
Using the Windows Management Instrumentation requests
Creating a file
Changing an executable file
DNS request
Sending an HTTP GET request
Creating a file in the %temp% directory
Creating a process from a recently created file
Launching a process
Bypassing of proactive protection methods using Windows Management Instrumentation (WMI)
Launching a process by exploiting the app vulnerability
Infecting executable files
Result
Verdict:
Malicious
File Type:
Legacy Excel File with Macro
Link:
https://app.docguard.net/ce4085be9c0cea2fdaa6145e86166b051222fcc96eac12e1668d803a6b97ebfe/results/dashboard
Behaviour
BlacklistAPI detected
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-vm macros macros-on-open
Link:
https://www.filescan.io/uploads/633b167978d4acb349f48c32/reports/2de2e8ba-a74d-4a25-9789-e63a74609106/overview
Label:
Malicious
Suspicious Score:
6.1/10
Score Malicious:
61%
Score Benign:
39%
Link:
https://www.malware.ai/gui/files/?id=3860a8a0-9cf1-4743-a794-992e10056829
Result
Verdict:
MALICIOUS
Link:
https://labs.inquest.net/dfi/sha256/ce4085be9c0cea2fdaa6145e86166b051222fcc96eac12e1668d803a6b97ebfe
Details
Macro with Startup Hook
Detected macro logic that will automatically execute on document open. Most malware contains some execution hook.
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:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1082674
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to register a low level keyboard hook
Contains functionality to steal Chrome passwords or cookies
Contains functionality to steal Firefox passwords or cookies
Creates processes via WMI
Delayed program exit found
DLL side loading technique detected
Document contains an embedded VBA macro which may execute processes
Drops script or batch files to the startup folder
Injects a PE file into a foreign processes
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Powershell drops PE file
Suspicious powershell command line found
System process connects to network (likely due to code injection or exploit)
Very long command line found
Writes to foreign memory regions
Wscript starts Powershell (via cmd or directly)
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 715227 Sample: USD$19,959.92_ACH_Automatio... Startdate: 03/10/2022 Architecture: WINDOWS Score: 100 57 google.com 2->57 83 Malicious sample detected (through community Yara rule) 2->83 85 Antivirus detection for URL or domain 2->85 87 Yara detected Remcos RAT 2->87 89 5 other signatures 2->89 9 powershell.exe 12 7 2->9         started        14 wscript.exe 1 2->14         started        16 powershell.exe 2->16         started        18 2 other processes 2->18 signatures3 process4 dnsIp5 69 tpergtbe2.ml 162.241.114.48, 49171, 49172, 49173 UNIFIEDLAYER-AS-1US United States 9->69 55 C:\Users\user\AppData\Local\Temp\notepad.js, ASCII 9->55 dropped 109 Powershell drops PE file 9->109 20 wscript.exe 1 9->20         started        111 Wscript starts Powershell (via cmd or directly) 14->111 113 Very long command line found 14->113 23 powershell.exe 14->23         started        26 wscript.exe 16->26         started        28 iexplore.exe 9 18->28         started        30 iexplore.exe 14 18->30         started        32 iexplore.exe 13 18->32         started        file6 signatures7 process8 dnsIp9 91 Wscript starts Powershell (via cmd or directly) 20->91 93 Very long command line found 20->93 34 powershell.exe 9 20->34         started        39 powershell.exe 7 20->39         started        63 tpergtbe2.ml 23->63 95 Writes to foreign memory regions 23->95 97 DLL side loading technique detected 23->97 99 Injects a PE file into a foreign processes 23->99 41 notepad.exe 23->41         started        43 powershell.exe 26->43         started        45 powershell.exe 7 26->45         started        65 tpergtbe2.ml 28->65 67 tpergtbe2.ml 30->67 signatures10 process11 dnsIp12 59 tpergtbe2.ml 34->59 53 C:\Users\user\AppData\...\AgileDotNetRT64.dll, PE32+ 34->53 dropped 101 Writes to foreign memory regions 34->101 103 DLL side loading technique detected 34->103 105 Injects a PE file into a foreign processes 34->105 47 notepad.exe 2 9 34->47         started        61 tpergtbe2.ml 43->61 51 notepad.exe 43->51         started        107 Drops script or batch files to the startup folder 45->107 file13 signatures14 process15 dnsIp16 71 zelthin.dvrlists.com 194.5.97.174, 49184, 656 DANILENKODE Netherlands 47->71 73 geoplugin.net 178.237.33.50, 49185, 80 ATOM86-ASATOM86NL Netherlands 47->73 75 System process connects to network (likely due to code injection or exploit) 47->75 77 Contains functionality to steal Chrome passwords or cookies 47->77 79 Contains functionality to register a low level keyboard hook 47->79 81 2 other signatures 47->81 signatures17
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/ce4085be9c0cea2fdaa6145e86166b051222fcc96eac12e1668d803a6b97ebfe/
Threat name:
Win32.Dropper.SDrop
Create hunting rule
Status:
Malicious
First seen:
2022-10-03 17:06:06 UTC
File Type:
Document
Extracted files:
17
AV detection:
12 of 26 (46.15%)
Threat level:
  3/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=zzailpu4btvc7wvgcrpimftlaujcf7gjn2wbfylgrwadu24x5p7a._file
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:zh macro macro_on_action rat
Link:
https://tria.ge/reports/221003-vmd48agacl/
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 FindShellTrayWindow
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Office loads VBA resources, possible macro or embedded object present
Enumerates physical storage devices
Drops file in System32 directory
Suspicious use of SetThreadContext
Checks computer location settings
Loads dropped DLL
Blocklisted process makes network request
Process spawned unexpected child process
Remcos
Malware Config
C2 Extraction:
zelthin.dvrlists.com:656
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/fdaab1f5-2e31-4d09-878d-77bf56a4df49
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/ce4085be9c0c/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/ce4085be9c0cea2fdaa6145e86166b051222fcc96eac12e1668d803a6b97ebfe

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:BitcoinAddress
Create hunting rule
Author:Didier Stevens (@DidierStevens)
Description:Contains a valid Bitcoin address
Rule name:informational_win_ole_protected
Create hunting rule
Author:Jeff White (karttoon@gmail.com) @noottrak
Description:Identify OLE Project protection within documents.
Rule name:malware_shellcode_hash
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect shellcode api hash value
Rule name:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
Rule name:pdb_YARAify
Create hunting rule
Author:@wowabiy314
Description:PDB

File information

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

Malspam

RemcosRAT

Excel file xls ce4085be9c0cea2fdaa6145e86166b051222fcc96eac12e1668d803a6b97ebfe

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/host/tpergtbe2.ml/
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/316189/

Comments