MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 26bd031cb4a5333bbd77698f5aaf737cb108b4b9d30670d92218a8c31ec0abc7. 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: 14


Maldoc score: 11


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

SHA256 hash: 26bd031cb4a5333bbd77698f5aaf737cb108b4b9d30670d92218a8c31ec0abc7
SHA3-384 hash: 03230d724a1ae6ce56df64259ea0006cac358c3a9c9e516dc19aaf9989472244498a67be9bd96ed4cedeca3e07d474a0
SHA1 hash: 57cdf9dbc688ad5796a92c10b3b74d9155763de9
MD5 hash: 678b736d27eee36ebcf6c0843d9cb83a
humanhash: nitrogen-summer-six-twenty
File name:Payment Notification.xls
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:38'400 bytes
First seen:2022-03-18 09:58:48 UTC
Last seen:Never
File type:Excel file xls
MIME type:application/vnd.ms-excel
ssdeep 768:Fvmk3hOdsylKlgxopeiBNhZFGzE+cL2kdAJyUVs+mFz+JBgj:Qk3hOdsylKlgxopeiBNhZFGzE+cL2kde
TLSH T1EE0382A2B7D6D80AD99A03794CE6C7E63627FC615F63834B3249F70E1F71A808903617
Reporter abuse_ch
Tags:RemcosRAT 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: 11
OLE dump

MalwareBazaar was able to identify 12 sections in this file using oledump:

Section IDSection sizeSection name
1108 bytesCompObj
2244 bytesDocumentSummaryInformation
3220 bytesSummaryInformation
476 bytesMBD00F49C1F/CompObj
51108 bytesMBD00F49C1F/Ole10Native
625009 bytesWorkbook
7422 bytes_VBA_PROJECT_CUR/PROJECT
862 bytes_VBA_PROJECT_CUR/PROJECTwm
9991 bytes_VBA_PROJECT_CUR/VBA/Sheet1
102522 bytes_VBA_PROJECT_CUR/VBA/ThisWorkbook
112605 bytes_VBA_PROJECT_CUR/VBA/_VBA_PROJECT
12522 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
IOCFgCHe.jsExecutable file name
SuspiciousEnvironMay read system environment variables
SuspiciousOpenMay open a file
SuspiciousInvokeVerbMay run an executable file or a system command
SuspiciousGetObjectMay get an OLE object with a running instance
SuspiciousHex StringsHex-encoded strings were detected, may be used to obfuscate strings (option --decode to see all)

Intelligence

File Origin
# of uploads :
1
# of downloads :
158
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
Payment Notification-1.xls
Verdict:
Malicious activity
Analysis date:
2022-03-17 20:13:00 UTC
Tags:
macros ole-embedded macros-on-open maldoc-20 opendir rat remcos keylogger
Link:
https://app.any.run/tasks/07eb7a45-dc30-4918-ab40-c3d952f9815d

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/252401/
Detection(s):
TwinWave.EvilDoc.DOCXSTRGOOD..JSE.200618.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.OdysseyAndBattle.20210707.UNOFFICIAL
Create hunting rule

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

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

TwinWave.EvilDoc.EvilDoc.DMC12_GAUGE_SHELLAPP.20210901.UNOFFICIAL
Create hunting rule

Result
Verdict:
Suspicious
Maliciousness:

Behaviour
Searching for the window
Sending a custom TCP request
Creating a window
Сreating synchronization primitives
Changing a file
Creating a file in the %temp% directory
Changing the Zone.Identifier stream
Launching a process
Searching for synchronization primitives
Result
Verdict:
Malicious
File Type:
Legacy Excel File with Macro
Link:
https://app.docguard.net/26bd031cb4a5333bbd77698f5aaf737cb108b4b9d30670d92218a8c31ec0abc7/results/dashboard
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
macros macros-on-open
Link:
https://www.filescan.io/uploads/623457efb94fb38cb4a1dd9e/reports/ed0eccc9-7b55-417b-a0b9-57a3c40d61e5/overview
Label:
Malicious
Suspicious Score:
8.8/10
Score Malicious:
88%
Score Benign:
12%
Link:
https://www.malware.ai/gui/files/?id=41fa3127-f74b-42db-8b58-1aec87888ab8
Result
Verdict:
MALICIOUS
Link:
https://labs.inquest.net/dfi/sha256/26bd031cb4a5333bbd77698f5aaf737cb108b4b9d30670d92218a8c31ec0abc7
Details
Macro with Startup Hook
Detected macro logic that will automatically execute on document open. Most malware contains some execution hook.
Document With No Content
Document contains little or no semantic information.
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/959394
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to inject code into remote processes
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
Delayed program exit found
Document contains an embedded VBA macro with suspicious strings
Document exploit detected (process start blacklist hit)
Drops VBS files to the startup folder
Found malware configuration
Injects a PE file into a foreign processes
Installs a global keyboard hook
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
Sigma detected: Microsoft Office Product Spawning Windows Shell
Sigma detected: Notepad Making Network Connection
Sigma detected: Suspicious PowerShell Cmdline
Sigma detected: Suspicious Script Execution From Temp Folder
Sigma detected: WScript or CScript Dropper
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
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: 591881 Sample: Payment Notification.xls Startdate: 18/03/2022 Architecture: WINDOWS Score: 100 51 google.com 2->51 75 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->75 77 Multi AV Scanner detection for domain / URL 2->77 79 Found malware configuration 2->79 81 12 other signatures 2->81 11 EXCEL.EXE 47 34 2->11         started        14 iexplore.exe 5 34 2->14         started        16 wscript.exe 2->16         started        signatures3 process4 file5 47 C:\Users\user\...\Payment Notification.xls, Composite 11->47 dropped 18 wscript.exe 1 11->18         started        21 wscript.exe 11->21         started        23 iexplore.exe 14 14->23         started        process6 dnsIp7 69 Suspicious powershell command line found 18->69 71 Wscript starts Powershell (via cmd or directly) 18->71 73 Very long command line found 18->73 26 powershell.exe 12 7 18->26         started        30 powershell.exe 21->30         started        55 gotovacoil.com 72.48.234.249, 49166, 49167, 49168 GRANDECOM-AS1US United States 23->55 signatures8 process9 dnsIp10 57 dreamwatchevent.com 144.208.125.220, 49165, 49169, 80 SHOCK-1US United States 26->57 59 www.dreamwatchevent.com 26->59 49 C:\Users\user\AppData\Local\...\notepads.vbs, ASCII 26->49 dropped 32 wscript.exe 1 26->32         started        61 www.dreamwatchevent.com 30->61 35 wscript.exe 30->35         started        file11 process12 signatures13 65 Wscript starts Powershell (via cmd or directly) 32->65 67 Very long command line found 32->67 37 powershell.exe 7 32->37         started        41 powershell.exe 7 32->41         started        process14 dnsIp15 53 gotovacoil.com 37->53 83 Writes to foreign memory regions 37->83 85 Injects a PE file into a foreign processes 37->85 43 notepad.exe 2 3 37->43         started        87 Drops VBS files to the startup folder 41->87 signatures16 process17 dnsIp18 63 breakingsecurity.dvrlists.com 45.133.174.77, 162, 49170 ASBLANKPROXIESGB United Kingdom 43->63 89 System process connects to network (likely due to code injection or exploit) 43->89 91 Contains functionality to steal Chrome passwords or cookies 43->91 93 Contains functionality to inject code into remote processes 43->93 95 4 other signatures 43->95 signatures19
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/26bd031cb4a5333bbd77698f5aaf737cb108b4b9d30670d92218a8c31ec0abc7/
Threat name:
Win32.Trojan.Phonzy
Create hunting rule
Status:
Malicious
First seen:
2022-03-17 20:44:41 UTC
File Type:
Document
Extracted files:
17
AV detection:
13 of 27 (48.15%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=e26qghfuuuztxplxnghvvl3tpsyqrnfz2mdhbwjcdcumghwavpdq._file
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:2022 macro macro_on_action rat
Link:
https://tria.ge/reports/220318-lz3tnshdcn/
Behaviour
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 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
Suspicious use of SetThreadContext
Checks computer location settings
Blocklisted process makes network request
Remcos Payload
Process spawned unexpected child process
Remcos
Malware Config
C2 Extraction:
breakingsecurity.dvrlists.com:162
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/26bd031cb4a5/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/26bd031cb4a5333bbd77698f5aaf737cb108b4b9d30670d92218a8c31ec0abc7

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/252401/

Comments