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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 1c122921d7da3b2d068c5faa8992c67a774c905a37f89efcbb02c12a4e64f67a. 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: 11


Maldoc score: 4


Intelligence 11 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 1c122921d7da3b2d068c5faa8992c67a774c905a37f89efcbb02c12a4e64f67a
SHA3-384 hash: 6ec1d92f3b41b5107218e17a37f284d8fbd61a94deace865bde6072879a17ffaf0901e51294987b02773951adde90fac
SHA1 hash: d5915a55de4b5b4acf76cdd44b5c750a2d942ee7
MD5 hash: 21c592b15458ffda8b051a497a29889f
humanhash: butter-table-helium-white
File name:Solicitud de cotizacin.xls
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:925'696 bytes
First seen:2025-04-01 14:39:07 UTC
Last seen:Never
File type:Excel file xls
MIME type:application/vnd.ms-excel
ssdeep 24576:kpqbhqy5dngkobJMbsUVEcUCuREUcMx9hlvnMZMWfsd:kc5ekobJSkZhN9hlPLWfs
TLSH T17215CF806B15CBC6D668C7384CD24A011B30DE04DF620B6B2274762EBEB6F717F97996
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)
Magika xls
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: 4
OLE dump

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

Section IDSection sizeSection name
1114 bytesCompObj
2244 bytesDocumentSummaryInformation
3200 bytesSummaryInformation
4114 bytesMBD000FA2F5/CompObj
5340 bytesMBD000FA2F5/DocumentSummaryInformation
622516 bytesMBD000FA2F5/SummaryInformation
7484947 bytesMBD000FA2F5/Workbook
8418 bytesMBD000FA2F6/Ole
9395744 bytesWorkbook
10531 bytes_VBA_PROJECT_CUR/PROJECT
11104 bytes_VBA_PROJECT_CUR/PROJECTwm
12977 bytes_VBA_PROJECT_CUR/VBA/Sheet1
13977 bytes_VBA_PROJECT_CUR/VBA/Sheet2
14977 bytes_VBA_PROJECT_CUR/VBA/Sheet3
15985 bytes_VBA_PROJECT_CUR/VBA/ThisWorkbook
162644 bytes_VBA_PROJECT_CUR/VBA/_VBA_PROJECT
17553 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
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 :
939
Origin country :
NL NL
Vendor Threat Intelligence
Detection(s):
SecuriteInfo.com.Heur.27670.25.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.93TilInfinity.20240412.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
90.2%
Link:
https://cyber-fortress.com/docs/result/index.php?id=67ebfe90cfd0a37f830b88dd
Tags:
macro micro w97m
Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
Searching for the window
Using the Windows Management Instrumentation requests
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
macros
Link:
https://www.filescan.io/uploads/67ebfa98f274bf2d8e2c7fdd/reports/81378cbe-5a38-4633-9761-f78579ba6893/overview
Verdict:
Malicious
Labled as:
CVE-2017-0199
Link:
https://www.hybrid-analysis.com/sample/1c122921d7da3b2d068c5faa8992c67a774c905a37f89efcbb02c12a4e64f67a
Label:
Malicious
Suspicious Score:
10/10
Score Malicious:
1%
Score Benign:
0%
Link:
https://www.malware.ai/gui/files/?id=8a78f96f-e49b-4e59-bb49-ea357f93a548
Result
Threat name:
Remcos, DBatLoader
Create hunting rule
Detection:
malicious
Classification:
phis.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1653727
Signature
Allocates many large memory junks
C2 URLs / IPs found in malware configuration
Document exploit detected (process start blacklist hit)
Drops or copies cmd.exe with a different name (likely to bypass HIPS)
Drops PE files to the user root directory
Drops PE files with a suspicious file extension
Found evasive API chain checking for user administrative privileges
Found malware configuration
Installs a global keyboard hook
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
PowerShell case anomaly found
Powershell drops PE file
Sample uses process hollowing technique
Searches for Windows Mail specific files
Sigma detected: DLL Search Order Hijackig Via Additional Space in Path
Sigma detected: Dot net compiler compiles file from suspicious location
Sigma detected: Files With System Process Name In Unsuspected Locations
Sigma detected: Remcos
Sigma detected: Suspicious Microsoft Office Child Process
Sigma detected: Suspicious MSHTA Child Process
Sigma detected: System File Execution Location Anomaly
Sigma detected: Windows Binaries Write Suspicious Extensions
Suricata IDS alerts for network traffic
Suspicious command line found
Suspicious powershell command line found
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Instant Messenger accounts or passwords
Tries to steal Mail credentials (via file / registry access)
Uses ping.exe to check the status of other devices and networks
Uses ping.exe to sleep
Uses schtasks.exe or at.exe to add and modify task schedules
Writes to foreign memory regions
Yara detected DBatLoader
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Yara detected WebBrowserPassView password recovery tool
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1653727 Sample: Solicitud de cotizaci#U00f3n.xls Startdate: 01/04/2025 Architecture: WINDOWS Score: 100 101 Suricata IDS alerts for network traffic 2->101 103 Found malware configuration 2->103 105 Malicious sample detected (through community Yara rule) 2->105 107 16 other signatures 2->107 11 EXCEL.EXE 57 22 2->11         started        15 taskeng.exe 2->15         started        process3 dnsIp4 95 kuhlinks.de 104.21.47.51, 443, 49161, 49168 CLOUDFLARENETUS United States 11->95 97 172.245.191.88, 49162, 49164, 49165 AS-COLOCROSSINGUS United States 11->97 77 Solicitud de cotizaci#U00f3n.xls (copy), Composite 11->77 dropped 17 mshta.exe 10 11->17         started        21 mshta.exe 11->21         started        file5 process6 dnsIp7 85 172.67.144.140, 443, 49163 CLOUDFLARENETUS United States 17->85 87 kuhlinks.de 17->87 109 Suspicious command line found 17->109 111 PowerShell case anomaly found 17->111 23 cmd.exe 17->23         started        89 kuhlinks.de 21->89 26 cmd.exe 21->26         started        signatures8 process9 signatures10 123 Suspicious powershell command line found 23->123 125 PowerShell case anomaly found 23->125 28 powershell.exe 24 23->28         started        32 powershell.exe 26->32         started        process11 file12 79 C:\Users\user\AppData\Roaming\sihost.exe, PE32 28->79 dropped 81 C:\Users\user\AppData\Local\...\sihost[1].exe, PE32 28->81 dropped 83 C:\Users\user\AppData\...\cvbl3bm4.cmdline, Unicode 28->83 dropped 133 Powershell drops PE file 28->133 34 sihost.exe 4 21 28->34         started        39 csc.exe 2 28->39         started        41 sihost.exe 32->41         started        43 csc.exe 32->43         started        signatures13 process14 dnsIp15 91 qwertyuioplkjhgfdsazxcvbnm.ydns.eu 45.88.91.237, 20908, 49166, 49167 LVLT-10753US Bulgaria 34->91 93 geoplugin.net 178.237.33.50, 49169, 80 ATOM86-ASATOM86NL Netherlands 34->93 67 C:\Users\user\Links\Djauszke.PIF, PE32 34->67 dropped 69 C:\ProgramData\remcos\logs.dat, data 34->69 dropped 113 Multi AV Scanner detection for dropped file 34->113 115 Drops PE files with a suspicious file extension 34->115 117 Writes to foreign memory regions 34->117 121 4 other signatures 34->121 45 cmd.exe 34->45         started        48 recover.exe 34->48         started        50 recover.exe 34->50         started        56 3 other processes 34->56 71 C:\Users\user\AppData\Local\...\cvbl3bm4.dll, PE32 39->71 dropped 52 cvtres.exe 39->52         started        119 Allocates many large memory junks 41->119 73 C:\Users\user\AppData\Local\...\omlfqhuv.dll, PE32 43->73 dropped 54 cvtres.exe 43->54         started        file16 signatures17 process18 signatures19 135 Uses ping.exe to sleep 45->135 137 Uses schtasks.exe or at.exe to add and modify task schedules 45->137 139 Uses ping.exe to check the status of other devices and networks 45->139 58 esentutl.exe 1 45->58         started        141 Tries to steal Instant Messenger accounts or passwords 48->141 143 Tries to steal Mail credentials (via file / registry access) 48->143 145 Searches for Windows Mail specific files 48->145 147 Tries to harvest and steal browser information (history, passwords, etc) 50->147 62 PING.EXE 56->62         started        65 schtasks.exe 56->65         started        process20 dnsIp21 75 C:\Users\Public\alpha.pif, PE32 58->75 dropped 127 Drops PE files to the user root directory 58->127 129 Drops PE files with a suspicious file extension 58->129 131 Drops or copies cmd.exe with a different name (likely to bypass HIPS) 58->131 99 127.0.0.1 unknown unknown 62->99 file22 signatures23
Score:
100%
Verdict:
Malware
File Type:
OFFICE
Link:
https://malprob.io/report/1c122921d7da3b2d068c5faa8992c67a774c905a37f89efcbb02c12a4e64f67a
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/1c122921d7da3b2d068c5faa8992c67a774c905a37f89efcbb02c12a4e64f67a/
Threat name:
Win32.Trojan.Minerva
Create hunting rule
Status:
Malicious
First seen:
2025-04-01 10:41:59 UTC
File Type:
Document
Extracted files:
25
AV detection:
10 of 24 (41.67%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=dqjcsiox3i5s2buml6vitewgpj3uzec2g74j57f3alasutte6z5a._file
Result
Malware family:
n/a
Score:
  1/10
Tags:
n/a
Link:
https://tria.ge/reports/250401-r1dttsspx7/
Behaviour
Checks processor information in registry
Enumerates system info in registry
Suspicious behavior: AddClipboardFormatListener
Suspicious use of SetWindowsHookEx
Uses Task Scheduler COM API
Uses Volume Shadow Copy WMI provider
Uses Volume Shadow Copy service COM API
Malware Family:
n/a
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/e9d71e6f-debe-47ef-aecd-243976db3714
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.70
Link:
https://yomi.yoroi.company/submissions/1c122921d7da3b2d068c5faa8992c67a774c905a37f89efcbb02c12a4e64f67a

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:Excel_Hidden_Macro_Sheet
Create hunting rule
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:Sus_Obf_Enc_Spoof_Hide_PE
Create hunting rule
Author:XiAnzheng
Description:Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)
Rule name:XLS_STRINGS
Create hunting rule
Author:somedieyoungZZ
Description:Detect Strings targeting Bangladesh

File information

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

Comments