MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 40a32c20b9e9576ce7f8d4342ad24b9f9aa0805bdc43aa781bc3b2626287d740. 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: 17


Intelligence 17 IOCs YARA 4 File information Comments
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SHA256 hash: 40a32c20b9e9576ce7f8d4342ad24b9f9aa0805bdc43aa781bc3b2626287d740
SHA3-384 hash: bf1dc83b5bd2b8fa25b6d612c8d82b635e75768de845e79a1b636d7899f74bc65d46cfc0a5959fb960dc999d28352347
SHA1 hash: dbf749bf18d503c440a681863b6c84a80083de62
MD5 hash: f5b954f0119303d3d0ef657666b75cb3
humanhash: mars-stairway-paris-lion
File name:EBUaVgIGyhAIdkk.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'008'640 bytes
First seen:2024-05-16 17:13:41 UTC
Last seen:2024-05-16 18:32:55 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'742 x AgentTesla, 19'607 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 24576:TSYMFniyyZ6Pqc2Duhz/s8dTGMjqLpHr:pMFnyZ82DuhzfCHdHr
TLSH T1A7251210353899A3E33E93F51622607147B11EA6D1A4FBD86CC92CCB36FEBC451587AB
TrID 63.0% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
11.2% (.SCR) Windows screen saver (13097/50/3)
9.0% (.EXE) Win64 Executable (generic) (10523/12/4)
5.6% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
3.8% (.EXE) Win32 Executable (generic) (4504/4/1)
File icon (PE):PE icon
dhash icon 98186169696b338a (6 x AgentTesla, 5 x Formbook, 1 x RemcosRAT)
Reporter Anonymous
Tags:exe RemcosRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
328
Origin country :
US US
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
40a32c20b9e9576ce7f8d4342ad24b9f9aa0805bdc43aa781bc3b2626287d740.exe
Verdict:
Malicious activity
Analysis date:
2024-05-16 17:29:02 UTC
Tags:
rat remcos keylogger
Link:
https://app.any.run/tasks/6902696d-4143-4748-a36c-e370cae5f703

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.BackDoor.AgentTeslaNET.6.22925.8488.UNOFFICIAL
Create hunting rule

Gathering data
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
Setting a keyboard event handler
DNS request
Connection attempt
Adding an exclusion to Microsoft Defender
Enabling autorun by creating a file
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/66463ef081ea6b1eef42b953/reports/e1894239-85d2-4aa4-a44d-7edfcd0d3a8e/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/40a32c20b9e9576ce7f8d4342ad24b9f9aa0805bdc43aa781bc3b2626287d740
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/4ae6602a-b422-487b-aa40-edc09957aeca
Result
Threat name:
Remcos, PureLog Stealer
Create hunting rule
Detection:
malicious
Classification:
rans.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1442880
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.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
Connects to many ports of the same IP (likely port scanning)
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
Installs a global keyboard hook
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: Remcos
Sigma detected: Scheduled temp file as task from temp location
Uses dynamic DNS services
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM3
Yara detected PureLog Stealer
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1442880 Sample: EBUaVgIGyhAIdkk.exe Startdate: 16/05/2024 Architecture: WINDOWS Score: 100 45 alibabaforwader10.ddns.net 2->45 49 Found malware configuration 2->49 51 Malicious sample detected (through community Yara rule) 2->51 53 Antivirus detection for URL or domain 2->53 57 14 other signatures 2->57 8 YbOWhnO.exe 5 2->8         started        11 EBUaVgIGyhAIdkk.exe 7 2->11         started        signatures3 55 Uses dynamic DNS services 45->55 process4 file5 59 Antivirus detection for dropped file 8->59 61 Multi AV Scanner detection for dropped file 8->61 63 Contains functionality to bypass UAC (CMSTPLUA) 8->63 69 6 other signatures 8->69 14 YbOWhnO.exe 8->14         started        17 schtasks.exe 8->17         started        41 C:\Users\user\AppData\Roaming\YbOWhnO.exe, PE32 11->41 dropped 43 C:\Users\user\AppData\Local\Temp\tmp431.tmp, XML 11->43 dropped 65 Uses schtasks.exe or at.exe to add and modify task schedules 11->65 67 Adds a directory exclusion to Windows Defender 11->67 19 EBUaVgIGyhAIdkk.exe 3 2 11->19         started        23 powershell.exe 23 11->23         started        25 powershell.exe 23 11->25         started        27 3 other processes 11->27 signatures6 process7 dnsIp8 29 conhost.exe 17->29         started        47 alibabaforwader10.ddns.net 41.217.94.137, 49733, 49736, 49740 SpectranetNG Nigeria 19->47 39 C:\ProgramData\remcos\logs.dat, data 19->39 dropped 71 Detected Remcos RAT 19->71 73 Installs a global keyboard hook 19->73 75 Loading BitLocker PowerShell Module 23->75 31 conhost.exe 23->31         started        33 WmiPrvSE.exe 23->33         started        35 conhost.exe 25->35         started        37 conhost.exe 27->37         started        file9 signatures10 process11
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/40a32c20b9e9576ce7f8d4342ad24b9f9aa0805bdc43aa781bc3b2626287d740
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/40a32c20b9e9576ce7f8d4342ad24b9f9aa0805bdc43aa781bc3b2626287d740/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2024-05-14 18:46:27 UTC
File Type:
PE (.Net Exe)
Extracted files:
16
AV detection:
18 of 38 (47.37%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=icrsyifz5flwzz7y2q2cvuslt6nkbac33rb2u6a3yozgeyuh25aa._file
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:remotehost execution rat
Link:
https://tria.ge/reports/240516-vrzaysfc42/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Checks computer location settings
Command and Scripting Interpreter: PowerShell
Remcos
Malware Config
C2 Extraction:
alibabaforwader10.ddns.net:60247
Unpacked files
SH256 hash:
c540faac263d4542f628a640199466b3dcc4cc7bb00db8ebb77e2893b694fd44
MD5 hash:
652a00ef353b96cb34fde8d5efc47cce
SHA1 hash:
dd1f435551267542e945f2e1b5bc592ce90535e4
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/7225d9bd-7a81-4955-8725-fdbb4a89d669/
Parent samples :
40a32c20b9e9576ce7f8d4342ad24b9f9aa0805bdc43aa781bc3b2626287d740
c540faac263d4542f628a640199466b3dcc4cc7bb00db8ebb77e2893b694fd44
SH256 hash:
fd3f1f3f0c984361bb23b2f6ba22a4bbd636095bf6e9d0c31d77b5ccfceed307
MD5 hash:
1e504d0d93436a776666cc8236d65844
SHA1 hash:
834490f9be03a0814c6460f5aae33af12e83b8f5
Link:
https://www.unpac.me/results/7225d9bd-7a81-4955-8725-fdbb4a89d669/
SH256 hash:
d3574ff0a93ee3a0342b52436e4d1c014fb522282612692d3f3b68bb250c3e80
MD5 hash:
285ce253792a80aaa5ea772d653c28e2
SHA1 hash:
557e17664a1449d3e0fa54bc286390bcd7af7da4
Link:
https://www.unpac.me/results/7225d9bd-7a81-4955-8725-fdbb4a89d669/
SH256 hash:
3efb7fb53197e84ea3f27fde2896b0a6b562a48d5aa9718d73cec6a0048570ea
MD5 hash:
0d7bcedec3900018cfcaa66dbeabb2a8
SHA1 hash:
2a52f9f9c10ed457ae29e26e0c22dd017fa7dced
Link:
https://www.unpac.me/results/7225d9bd-7a81-4955-8725-fdbb4a89d669/
SH256 hash:
d7d9061c604387a231802e8c76f823444531bc5c8c67215c583aa20dd1aa6fe5
MD5 hash:
eedfe4ea6f6d5645eb254493e38c9caf
SHA1 hash:
1647f9208a9a994cb1c20ea3cfa91f5472803a05
Link:
https://www.unpac.me/results/7225d9bd-7a81-4955-8725-fdbb4a89d669/
SH256 hash:
40a32c20b9e9576ce7f8d4342ad24b9f9aa0805bdc43aa781bc3b2626287d740
MD5 hash:
f5b954f0119303d3d0ef657666b75cb3
SHA1 hash:
dbf749bf18d503c440a681863b6c84a80083de62
Link:
https://www.unpac.me/results/7225d9bd-7a81-4955-8725-fdbb4a89d669/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/40a32c20b9e9/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/40a32c20b9e9576ce7f8d4342ad24b9f9aa0805bdc43aa781bc3b2626287d740

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:NETexecutableMicrosoft
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.

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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