MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 108f91d9edea555ad29cb610cc1b578bca00a7447900f0caa2fdc15e8bfbacc4. 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: 18


Intelligence 18 IOCs YARA 32 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 108f91d9edea555ad29cb610cc1b578bca00a7447900f0caa2fdc15e8bfbacc4
SHA3-384 hash: 1d69b1e1d3ef8e148a6681c75deb0f7cb8b8e4b7f661157283953da282676ac63d677f1fb78fbcb2501c124528a5d3ba
SHA1 hash: 2f66b4af4ae637fecda1d2a01dfc407137447722
MD5 hash: c5a8d5c579b01dde6496d426425c9e64
humanhash: three-twenty-jig-table
File name:Quotation.scr
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:951'816 bytes
First seen:2024-05-21 06:18:28 UTC
Last seen:2024-05-22 05:56:46 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'748 x AgentTesla, 19'642 x Formbook, 12'245 x SnakeKeylogger)
ssdeep 24576:4qi0xXW+9UgrA7TEZEDPpsuNFMAvKKyoZ8y7IC:Ri037rOoZ6BsuPM0KBoZ8yMC
Threatray 783 similar samples on MalwareBazaar
TLSH T1A51523337368C7D7CF6A9F737178A06A4BB07C215906CBC80A97900C93D7F6289566A7
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10523/12/4)
6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.3% (.EXE) Win32 Executable (generic) (4504/4/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
File icon (PE):PE icon
dhash icon 00b6bae8a8aad602 (11 x AgentTesla, 2 x NanoCore, 2 x Formbook)
Reporter threatcat_ch
Tags:exe RemcosRAT

Intelligence

File Origin
# of uploads :
3
# of downloads :
351
Origin country :
CH CH
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
108f91d9edea555ad29cb610cc1b578bca00a7447900f0caa2fdc15e8bfbacc4.exe
Verdict:
Malicious activity
Analysis date:
2024-05-21 06:29:15 UTC
Tags:
rat remcos remote
Link:
https://app.any.run/tasks/910b81c8-a1a9-4413-8b97-a809eb08ed01

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Win32.PWSX-gen.21951.9254.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
99.1%
Tags:
Banker Encryption Execution Network Static Stealth Heur Dexter
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
Creating a process with a hidden window
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Creating a file in the %temp% directory
Launching a process
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Connecting to a non-recommended domain
Connection attempt
Sending a custom TCP request
DNS request
Sending an HTTP GET request
Reading critical registry keys
Stealing user critical data
Adding an exclusion to Microsoft Defender
Enabling autorun by creating a file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
masquerade overlay packed
Link:
https://www.filescan.io/uploads/664c3cdbd7fb0506c93f5ebe/reports/9fb3f570-a221-4505-8afe-e7aac426665d/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/108f91d9edea555ad29cb610cc1b578bca00a7447900f0caa2fdc15e8bfbacc4
Result
Verdict:
MALICIOUS
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Malware family:
REMCOS
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/0da6e4ba-aec1-447b-8762-287c34e1aaf9
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
rans.phis.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1444767
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to bypass UAC (CMSTPLUA)
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
Contains functionalty to change the wallpaper
Delayed program exit found
Detected Remcos RAT
Found malware configuration
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Loading BitLocker PowerShell Module
Machine Learning detection for dropped file
Machine Learning detection for sample
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
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: Remcos
Sigma detected: Scheduled temp file as task from temp location
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)
Tries to steal Mail credentials (via file registry)
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM3
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Yara detected WebBrowserPassView password recovery tool
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1444767 Sample: Quotation.scr.exe Startdate: 21/05/2024 Architecture: WINDOWS Score: 100 49 geoplugin.net 2->49 55 Found malware configuration 2->55 57 Malicious sample detected (through community Yara rule) 2->57 59 Antivirus detection for URL or domain 2->59 61 13 other signatures 2->61 8 Quotation.scr.exe 7 2->8         started        12 uEizHLXGQSPJ.exe 5 2->12         started        signatures3 process4 file5 45 C:\Users\user\AppData\...\uEizHLXGQSPJ.exe, PE32 8->45 dropped 47 C:\Users\user\AppData\Local\...\tmp4CD8.tmp, XML 8->47 dropped 63 Tries to steal Mail credentials (via file registry) 8->63 65 Uses schtasks.exe or at.exe to add and modify task schedules 8->65 67 Adds a directory exclusion to Windows Defender 8->67 69 Injects a PE file into a foreign processes 8->69 14 Quotation.scr.exe 3 13 8->14         started        18 powershell.exe 23 8->18         started        20 powershell.exe 23 8->20         started        22 schtasks.exe 1 8->22         started        71 Antivirus detection for dropped file 12->71 73 Multi AV Scanner detection for dropped file 12->73 75 Contains functionality to bypass UAC (CMSTPLUA) 12->75 77 6 other signatures 12->77 24 uEizHLXGQSPJ.exe 12->24         started        26 schtasks.exe 12->26         started        signatures6 process7 dnsIp8 51 185.216.70.120, 2427, 49735, 49738 CLOUDCOMPUTINGDE Germany 14->51 53 geoplugin.net 178.237.33.50, 49739, 80 ATOM86-ASATOM86NL Netherlands 14->53 85 Detected Remcos RAT 14->85 87 Maps a DLL or memory area into another process 14->87 28 Quotation.scr.exe 14->28         started        31 Quotation.scr.exe 14->31         started        33 Quotation.scr.exe 14->33         started        89 Loading BitLocker PowerShell Module 18->89 35 conhost.exe 18->35         started        37 WmiPrvSE.exe 18->37         started        39 conhost.exe 20->39         started        41 conhost.exe 22->41         started        43 conhost.exe 26->43         started        signatures9 process10 signatures11 79 Tries to steal Instant Messenger accounts or passwords 28->79 81 Tries to steal Mail credentials (via file / registry access) 28->81 83 Tries to harvest and steal browser information (history, passwords, etc) 31->83
Score:
99%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/108f91d9edea555ad29cb610cc1b578bca00a7447900f0caa2fdc15e8bfbacc4
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/108f91d9edea555ad29cb610cc1b578bca00a7447900f0caa2fdc15e8bfbacc4/
Threat name:
ByteCode-MSIL.Trojan.LokiBot
Create hunting rule
Status:
Malicious
First seen:
2024-05-21 03:50:30 UTC
File Type:
PE (.Net Exe)
Extracted files:
11
AV detection:
22 of 24 (91.67%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=cchzdwpn5jkvvuu4wyimyg2xrpfabj2epeapbsvc7xav5c73vtca._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
5e4ac8eb80f59f5d1b0952665962a8d357ae28d1b62ae6825520864b90b53142
RemcosRAT
7038b1250cc9380861d92e721d364cb844459f87ecc3fe002b59e97d35926dfa
RemcosRAT
866de3bdc1cc207c818212511641cdf5e6220f304619a26b5e9cb2d2b9c8a309
RemcosRAT
8f02ecb26530c0a13b7f00020ebca144fc271fe36a5caaba1f4b3270e8e0023c
RemcosRAT
9a21402d9ef58001becce649565f3668e660c608681f8f524e968e6ad96485a3
RemcosRAT
d334afd3da3c629abf0772c5be572d1d7b252b9a1ad2fae0e1809d04635f3e4b
RemcosRAT
+ 773 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:remotehost collection execution rat spyware stealer
Link:
https://tria.ge/reports/240521-g26k5aba29/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
Suspicious use of SetThreadContext
Accesses Microsoft Outlook accounts
Checks computer location settings
Reads user/profile data of web browsers
Command and Scripting Interpreter: PowerShell
NirSoft MailPassView
NirSoft WebBrowserPassView
Nirsoft
Remcos
Malware Config
C2 Extraction:
185.216.70.120:2427
Verdict:
Unknown
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/f4ec25ec-1468-4a6a-826e-3cbb393518b2
Unpacked files
SH256 hash:
0b7dcc18b0ef39734a24ca5923b02df82c670d08365fe376f2ed4ff9fcbc6303
MD5 hash:
0441cc0dacc6d821252e66a156b1d9bd
SHA1 hash:
df46cc702950a53a5de7b804d2076ef03f8ac6b4
Link:
https://www.unpac.me/results/65cd768e-13e6-4bc2-bc16-c0cce3987b83/
SH256 hash:
120087f7bcd116f56bebecf72302b8280702e32a44bdb069778fd060acf304db
MD5 hash:
e180ec9e3d182fbd5043af6eb02763a4
SHA1 hash:
d00ec158f971c7e78df7fc32f8c6371c6dcf8fe7
Detections:
Remcos
Create hunting rule
win_remcos_w0
Create hunting rule
win_remcos_auto
Create hunting rule
malware_windows_remcos_rat
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
Create hunting rule
Link:
https://www.unpac.me/results/65cd768e-13e6-4bc2-bc16-c0cce3987b83/
Parent samples :
108f91d9edea555ad29cb610cc1b578bca00a7447900f0caa2fdc15e8bfbacc4
120087f7bcd116f56bebecf72302b8280702e32a44bdb069778fd060acf304db
SH256 hash:
f540e8d603962027b3a1f8b86d035281bfbdd3a05a621ead255825bc2082632a
MD5 hash:
d172f59251b97b415b621d302e1be2b7
SHA1 hash:
b1534e603749c901b5ac185f20e281f6be7fa908
Link:
https://www.unpac.me/results/65cd768e-13e6-4bc2-bc16-c0cce3987b83/
SH256 hash:
17db15cd4e501f01fd1d425098dcc27a4a49a6cb5d4f07dbef803fdcaa97d90c
MD5 hash:
62eb7a1fac0978b5e30c52c4191a1cd0
SHA1 hash:
0645ecef67e6aceb4884d7411d8f6465edf8efb7
Link:
https://www.unpac.me/results/65cd768e-13e6-4bc2-bc16-c0cce3987b83/
SH256 hash:
108f91d9edea555ad29cb610cc1b578bca00a7447900f0caa2fdc15e8bfbacc4
MD5 hash:
c5a8d5c579b01dde6496d426425c9e64
SHA1 hash:
2f66b4af4ae637fecda1d2a01dfc407137447722
Detections:
INDICATOR_KB_CERT_7c1118cbbadc95da3752c46e47a27438
Create hunting rule
Link:
https://www.unpac.me/results/65cd768e-13e6-4bc2-bc16-c0cce3987b83/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/108f91d9edea/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.95
Link:
https://yomi.yoroi.company/submissions/108f91d9edea555ad29cb610cc1b578bca00a7447900f0caa2fdc15e8bfbacc4

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:BLOWFISH_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for Blowfish constants
Rule name:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__QueryInfo
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:iexplorer_remcos
Create hunting rule
Author:iam-py-test
Description:Detect iexplorer being taken over by Remcos
Rule name:INDICATOR_EXE_Packed_MPress
Create hunting rule
Author:ditekSHen
Description:Detects executables built or packed with MPress PE compressor
Rule name:INDICATOR_KB_CERT_7c1118cbbadc95da3752c46e47a27438
Create hunting rule
Author:ditekSHen
Description:Detects executables signed with stolen, revoked or invalid certificates
Rule name:INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
Create hunting rule
Author:ditekSHen
Description:Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers
Rule name:INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients
Create hunting rule
Author:ditekSHen
Description:Detects executables referencing many email and collaboration clients. Observed in information stealers
Rule name:INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
Create hunting rule
Author:ditekSHen
Description:Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003)
Rule name:maldoc_find_kernel32_base_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:maldoc_getEIP_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
Rule name:meth_stackstrings
Create hunting rule
Author:Willi Ballenthin
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:NETexecutableMicrosoft
Create hunting rule
Author:malware-lu
Rule name:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:pe_imphash
Create hunting rule
Rule name:PE_Potentially_Signed_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:QbotStuff
Create hunting rule
Author:anonymous
Rule name:Remcos
Create hunting rule
Author:kevoreilly
Description:Remcos Payload
Rule name:REMCOS_RAT_variants
Create hunting rule
Rule name:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:TeslaCryptPackedMalware
Create hunting rule
Rule name:ThreadControl__Context
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:Windows_Trojan_Remcos_b296e965
Create hunting rule
Author:Elastic Security
Reference:https://www.elastic.co/security-labs/exploring-the-ref2731-intrusion-set
Rule name:win_remcos_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.remcos.
Rule name:win_remcos_w0
Create hunting rule
Author:Matthew @ Embee_Research
Description:Detects strings present in remcos rat Samples.
Rule name:yarahub_win_remcos_rat_unpacked_aug_2023
Create hunting rule
Author:Matthew @ Embee_Research
Rule name:yara_template
Create hunting rule

File information

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

Malspam

RemcosRAT

Executable exe 108f91d9edea555ad29cb610cc1b578bca00a7447900f0caa2fdc15e8bfbacc4

(this sample)

  
Delivery method
Distributed via e-mail attachment

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (HIGH_ENTROPY_VA)high

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