MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 7b0093ab95f1f77158ba4493cde35d433e2ffde2bbe45bb4568982447046e333. 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 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 7b0093ab95f1f77158ba4493cde35d433e2ffde2bbe45bb4568982447046e333
SHA3-384 hash: e110ce1afaf24a03ea5427bdb3a476ff2157d782cb5b7f4b919810336d2c298ca9787f8f0d2040732eeac9f2f333c476
SHA1 hash: e7f914da75e8d06f7b84088e4dec8949bcee9afa
MD5 hash: 78815c303582c4095ec7c79e89f9aaf1
humanhash: october-angel-sad-zulu
File name:Payment Remittance.xls
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:33'792 bytes
First seen:2022-04-05 05:18:37 UTC
Last seen:Never
File type:Excel file xls
MIME type:application/vnd.ms-excel
ssdeep 768:Wggk3hOdsylKlgxopeiBNhZFGzE+cL2kdAJy07K/g47wlumZ7C:W7k3hOdsylKlgxopeiBNhZFGzE+cL2kB
TLSH T196E25FA2B782D90AD95907754CE7C6E63326FC51AFA3834B3289F71E1F71AC08D12617
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: 8
OLE dump

MalwareBazaar was able to identify 15 sections in this file using oledump:

Section IDSection sizeSection name
1108 bytesCompObj
2244 bytesDocumentSummaryInformation
3220 bytesSummaryInformation
417193 bytesWorkbook
5451 bytes_VBA_PROJECT_CUR/PROJECT
680 bytes_VBA_PROJECT_CUR/PROJECTwm
7991 bytes_VBA_PROJECT_CUR/VBA/Sheet1
81615 bytes_VBA_PROJECT_CUR/VBA/ThisWorkbook
92743 bytes_VBA_PROJECT_CUR/VBA/_VBA_PROJECT
101584 bytes_VBA_PROJECT_CUR/VBA/__SRP_0
11151 bytes_VBA_PROJECT_CUR/VBA/__SRP_1
12214 bytes_VBA_PROJECT_CUR/VBA/__SRP_2
13220 bytes_VBA_PROJECT_CUR/VBA/__SRP_3
141692 bytes_VBA_PROJECT_CUR/VBA/cWbsQ
15559 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
SuspiciousGetObjectMay get an OLE object with a running instance
SuspiciousChrMay attempt to obfuscate specific strings (use option --deobf to deobfuscate)
SuspiciousExecMay run an executable file or a system
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 :
211
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
Payment Remittance.xls
Verdict:
Malicious activity
Analysis date:
2022-04-04 20:16:38 UTC
Tags:
macros maldoc-20 opendir rat remcos
Link:
https://app.any.run/tasks/90f2b715-97cd-420b-aa1b-dc5934eb0760

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/260785/
Detection(s):
TwinWave.GetObjectStringManipulationDontMessAroundWithJim.20200804.UNOFFICIAL
Create hunting rule

SecuriteInfo.com.VB.Trojan.Valyria.6303.3025.30277.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.RemcosBite.M2.20220408.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

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Sending a custom TCP request
Creating a window
Сreating synchronization primitives
Creating a file in the %temp% directory
Creating a process from a recently created file
Launching a process
Query of malicious DNS domain
Launching a process by exploiting the app vulnerability
Sending an HTTP GET request to an infection source
Result
Verdict:
Malicious
File Type:
Legacy Excel File with Macro
Link:
https://app.docguard.net/7b0093ab95f1f77158ba4493cde35d433e2ffde2bbe45bb4568982447046e333/results/dashboard
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
macros
Link:
https://www.filescan.io/uploads/624bd14a40ce5db9f40aca8a/reports/cdba0e2c-41fa-4084-86f2-2683e33dd07a/overview
Label:
Malicious
Suspicious Score:
5.0/10
Score Malicious:
51%
Score Benign:
49%
Link:
https://www.malware.ai/gui/files/?id=7db0419d-4955-4144-9177-a6b72d943f90
Result
Verdict:
MALICIOUS
Link:
https://labs.inquest.net/dfi/sha256/7b0093ab95f1f77158ba4493cde35d433e2ffde2bbe45bb4568982447046e333
Details
Macro with Startup Hook
Detected macro logic that will automatically execute on document open. Most malware contains some execution hook.
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/970563
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 which may execute processes
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
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
Sigma detected: Bad Opsec Defaults Sacrificial Processes With Improper Arguments
Sigma detected: Microsoft Office Product Spawning Windows Shell
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
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: 603057 Sample: Payment Remittance.xls Startdate: 05/04/2022 Architecture: WINDOWS Score: 100 45 google.com 2->45 61 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->61 63 Multi AV Scanner detection for domain / URL 2->63 65 Found malware configuration 2->65 67 13 other signatures 2->67 10 EXCEL.EXE 53 13 2->10         started        14 iexplore.exe 5 33 2->14         started        16 wscript.exe 2->16         started        signatures3 process4 file5 43 C:\Users\user\...\Payment Remittance.xls, Composite 10->43 dropped 73 Suspicious powershell command line found 10->73 18 powershell.exe 12 7 10->18         started        22 iexplore.exe 14 14->22         started        signatures6 process7 dnsIp8 47 gotovacoil.com 72.48.234.249, 49165, 49166, 49167 GRANDECOM-AS1US United States 18->47 41 C:\Users\user\AppData\Local\...\notepads.vbs, ASCII 18->41 dropped 24 wscript.exe 1 18->24         started        file9 process10 signatures11 69 Wscript starts Powershell (via cmd or directly) 24->69 71 Very long command line found 24->71 27 powershell.exe 7 24->27         started        31 powershell.exe 7 24->31         started        process12 dnsIp13 51 gotovacoil.com 27->51 75 Writes to foreign memory regions 27->75 77 Injects a PE file into a foreign processes 27->77 33 RegAsm.exe 27->33         started        36 RegAsm.exe 2 27->36         started        39 RegAsm.exe 27->39         started        79 Drops VBS files to the startup folder 31->79 signatures14 process15 dnsIp16 53 Contains functionality to steal Chrome passwords or cookies 33->53 55 Contains functionality to inject code into remote processes 33->55 57 Contains functionality to register a low level keyboard hook 33->57 59 2 other signatures 33->59 49 hawman.cc.dvrlists.com 79.134.225.78, 162, 49170 FINK-TELECOM-SERVICESCH Switzerland 36->49 signatures17
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/7b0093ab95f1f77158ba4493cde35d433e2ffde2bbe45bb4568982447046e333/
Threat name:
Document-Office.Dropper.SDrop
Create hunting rule
Status:
Malicious
First seen:
2022-04-05 05:19:07 UTC
File Type:
Document
Extracted files:
19
AV detection:
11 of 41 (26.83%)
Threat level:
  3/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=pmajhk4v6h3xcwf2isj43y25im7c77pcxpsfxncwrgbei4cg4mzq._file
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:2022 money rat
Link:
https://tria.ge/reports/220405-fzwgpshgf5/
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
Suspicious use of SetThreadContext
Checks computer location settings
Blocklisted process makes network request
Process spawned unexpected child process
Remcos
Malware Config
C2 Extraction:
hawman.cc.dvrlists.com:162
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.80
Link:
https://yomi.yoroi.company/submissions/7b0093ab95f1f77158ba4493cde35d433e2ffde2bbe45bb4568982447046e333

File information

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

Malspam

RemcosRAT

Excel file xls 7b0093ab95f1f77158ba4493cde35d433e2ffde2bbe45bb4568982447046e333

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/260785/

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