MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 31febdf316e73eaa38c90143a5cd2351cdc4f4921ada4f6b053e5f9c2fa3d752. 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: 20


Intelligence 20 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 31febdf316e73eaa38c90143a5cd2351cdc4f4921ada4f6b053e5f9c2fa3d752
SHA3-384 hash: ddbb85ce5766c2e422c1ff3a4e735f71b7d5e6b67805f729188b1bbaeed650de73937e808763b648f4b754c31756188d
SHA1 hash: 189ba992552eca7c89f430d084b3b29d3a4b18b8
MD5 hash: 2fdf82bc3f069832d3599399c1387e07
humanhash: two-oven-minnesota-washington
File name:2024082801362910.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:929'792 bytes
First seen:2024-09-02 11:31:11 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'657 x AgentTesla, 19'469 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 24576:qOGdumZu8lNib6eFUhmekfhv74ROOY3xxXBN2:qduh23eFUhm9j4EOIXv
Threatray 4'309 similar samples on MalwareBazaar
TLSH T15E15125C661AE002CA6457390AB1E2F12A7C5EECF951D6179BDDEFFFFA368058D00212
TrID 69.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.0% (.EXE) Win64 Executable (generic) (10523/12/4)
6.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.2% (.EXE) Win32 Executable (generic) (4504/4/1)
1.9% (.EXE) Win16/32 Executable Delphi generic (2072/23)
Magika pebin
Reporter threatcat_ch
Tags:exe RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
379
Origin country :
CH CH
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
2024082801362910.exe
Verdict:
Malicious activity
Analysis date:
2024-09-02 11:36:39 UTC
Tags:
rat remcos evasion
Link:
https://app.any.run/tasks/e3d0c77d-68d2-4a7d-bff3-21d2d850aff8

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=66d5a23ba0c486d2f794104c
Tags:
Discovery Execution Infostealer Network Static Stealth Remcos
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Сreating synchronization primitives
Creating a process with a hidden window
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
Connection attempt
Sending a custom TCP request
DNS request
Sending an HTTP GET request
Adding an exclusion to Microsoft Defender
Enabling autorun by creating a file
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
packed remcos
Link:
https://www.filescan.io/uploads/66d5a23a6e29f44ae2a639c5/reports/aebcf8af-649d-471b-b043-6d44a76db698/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_90%
Link:
https://www.hybrid-analysis.com/sample/31febdf316e73eaa38c90143a5cd2351cdc4f4921ada4f6b053e5f9c2fa3d752
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/9a348131-0c9d-4921-b65e-6fc8a79cbae2
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
rans.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1502882
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
AI detected suspicious sample
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
Contains functionalty to change the wallpaper
Delayed program exit found
Found malware configuration
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)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: Scheduled temp file as task from temp location
Suricata IDS alerts for network traffic
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM3
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1502882 Sample: 2024082801362910.exe Startdate: 02/09/2024 Architecture: WINDOWS Score: 100 46 geoplugin.net 2->46 48 Suricata IDS alerts for network traffic 2->48 50 Found malware configuration 2->50 52 Malicious sample detected (through community Yara rule) 2->52 54 9 other signatures 2->54 8 2024082801362910.exe 7 2->8         started        12 OXwtFifCEW.exe 5 2->12         started        signatures3 process4 file5 34 C:\Users\user\AppData\...\OXwtFifCEW.exe, PE32 8->34 dropped 36 C:\Users\...\OXwtFifCEW.exe:Zone.Identifier, ASCII 8->36 dropped 38 C:\Users\user\AppData\Local\...\tmpAE0F.tmp, XML 8->38 dropped 40 C:\Users\user\...\2024082801362910.exe.log, ASCII 8->40 dropped 56 Uses schtasks.exe or at.exe to add and modify task schedules 8->56 58 Adds a directory exclusion to Windows Defender 8->58 60 Injects a PE file into a foreign processes 8->60 14 powershell.exe 23 8->14         started        17 2024082801362910.exe 2 13 8->17         started        20 schtasks.exe 1 8->20         started        62 Multi AV Scanner detection for dropped file 12->62 64 Contains functionalty to change the wallpaper 12->64 66 Machine Learning detection for dropped file 12->66 68 4 other signatures 12->68 22 schtasks.exe 1 12->22         started        24 OXwtFifCEW.exe 12->24         started        signatures6 process7 dnsIp8 70 Loading BitLocker PowerShell Module 14->70 26 WmiPrvSE.exe 14->26         started        28 conhost.exe 14->28         started        42 172.93.220.148, 45682, 49709 XTOM-AS-JPxTomJP United States 17->42 44 geoplugin.net 178.237.33.50, 49711, 80 ATOM86-ASATOM86NL Netherlands 17->44 30 conhost.exe 20->30         started        32 conhost.exe 22->32         started        signatures9 process10
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/31febdf316e73eaa38c90143a5cd2351cdc4f4921ada4f6b053e5f9c2fa3d752
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/31febdf316e73eaa38c90143a5cd2351cdc4f4921ada4f6b053e5f9c2fa3d752/
Threat name:
Win32.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2024-09-02 07:31:22 UTC
File Type:
PE (.Net Exe)
Extracted files:
8
AV detection:
19 of 24 (79.17%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=gh7l34yw447kuogjafb2ltjdkhg4j5esdlne62yfhzpzyl5d25ja._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
19c2d1f233ea3d256026796196e7067af26534ab46874cf4fdbacb7e73e5922a
RemcosRAT
6eecadfd2838192c745cf88fa82ed4e96d9f27b15f1372ab24a5e94fdba22978
RemcosRAT
70029840a2c10f707e5b6bee6a48c4c7fb1fc3efe79215d7bb01c5e2967848cb
RemcosRAT
9ac1813552dfe8f0ffa0197e74c453e4cca936ff667066628a03fe7bcfc69030
RemcosRAT
+ 4'299 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:3456789 discovery execution rat
Link:
https://tria.ge/reports/240902-nnapvszerh/
Behaviour
Scheduled Task/Job: Scheduled Task
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Checks computer location settings
Command and Scripting Interpreter: PowerShell
Remcos
Malware Config
C2 Extraction:
172.93.220.148:45682
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/f41fb043-6086-4e66-9aa4-41a6b27ed43f
Unpacked files
SH256 hash:
548450b8eeff3e1b0a080a01aaeacc58e98bd093399643df5eb1f04c99bc771e
MD5 hash:
f19063e1ea4923fa7f063686fbbda15a
SHA1 hash:
f8954d236c2320558a78df8c0867d545db757cb2
Detections:
SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24
Create hunting rule
SUSP_OBF_NET_Reactor_Indicators_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/cb860e82-4840-42a7-9d43-a8f2ab2cf803/
SH256 hash:
8f3e8fb00b864b774ba1ff591b4d2f29d04cf4fea45e179f39309b984a92093c
MD5 hash:
d0223abc16917fd6ab9a529f597cc431
SHA1 hash:
6de268dcad66b83e126c39b7cb8aaec020d64dcb
Link:
https://www.unpac.me/results/cb860e82-4840-42a7-9d43-a8f2ab2cf803/
SH256 hash:
8b57a0bf569967168f71c65a9a3fea76d712a114ed75bbf2b5fe50009cef7b1d
MD5 hash:
e14b56671ab9359a74544abff82db87e
SHA1 hash:
06f995c44f40d2655cb00f753a791421896e107e
Detections:
Remcos
Create hunting rule
win_remcos_auto
Create hunting rule
win_remcos_w0
Create hunting rule
malware_windows_remcos_rat
Create hunting rule
Link:
https://www.unpac.me/results/cb860e82-4840-42a7-9d43-a8f2ab2cf803/
Parent samples :
7815d02dd41dd657438b4b226f4ac1a33d6a37159e34448627088e1354f9ab69
31febdf316e73eaa38c90143a5cd2351cdc4f4921ada4f6b053e5f9c2fa3d752
ee4a689891705260239affa76e606afe4bb0e3100770f0f57a27b6367b0bbb40
b3c084f9fd5fe18129978cccf6d2d2ac972d5c7db3a7378372476f535cc16b8e
a9d403efd3d1d5740a5b1d8a0d691422b4cede106265437f533523f2d7bac16e
cb2b849e4d24527ba41c0e5ae3982ecde5bd91b94b5ae8bb27dc221b4c775891
bb982ea4dad990c5c393a7f1fb85a4daf85be97edcb1e1473cdd0703596ecd6d
cf7d328ce0b9c53b4613030296421f1cc710aa391bca418b3e3566db1128cbe5
SH256 hash:
31febdf316e73eaa38c90143a5cd2351cdc4f4921ada4f6b053e5f9c2fa3d752
MD5 hash:
2fdf82bc3f069832d3599399c1387e07
SHA1 hash:
189ba992552eca7c89f430d084b3b29d3a4b18b8
Link:
https://www.unpac.me/results/cb860e82-4840-42a7-9d43-a8f2ab2cf803/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/31febdf316e7/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/31febdf316e73eaa38c90143a5cd2351cdc4f4921ada4f6b053e5f9c2fa3d752

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:NET
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

File information

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

Malspam

RemcosRAT

Executable exe 31febdf316e73eaa38c90143a5cd2351cdc4f4921ada4f6b053e5f9c2fa3d752

(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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