MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 7577b9bf9939eb0865359788ce1f0d96eee3f79d401e5fa8ebb3e05d507f46d1. 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: 19


Intelligence 19 IOCs YARA 16 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 7577b9bf9939eb0865359788ce1f0d96eee3f79d401e5fa8ebb3e05d507f46d1
SHA3-384 hash: 9f23ddce096e5edc97d6383405a63ef95f2df6a6ee0f1df27a2b23f8361b789cb1dff6aa3ba4f7e76bfe70d154e2b2a6
SHA1 hash: 480125d7654b843fa89df16be5ba973f6d206c5f
MD5 hash: 6c37b81f882ba21df3b985ba287b3ab2
humanhash: five-angel-solar-high
File name:RXtmwI.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:922'624 bytes
First seen:2023-11-20 16:53:08 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 24576:8CY7Gw7AQsAhsPfJnduGz0s6QYc0iLHWqF:8VGw7p3hefJdrz0s6QLLH
Threatray 2'902 similar samples on MalwareBazaar
TLSH T12315235574B4835BC7DA3AF6807CB51503FBB0920C07C9E81CC931FA8AD6B4B9A09B5B
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) (4505/5/1)
File icon (PE):PE icon
dhash icon c4c6dcccecf8b4b8 (12 x AgentTesla, 3 x Formbook, 2 x RemcosRAT)
Reporter smica83
Tags:exe HUN RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
319
Origin country :
HU HU
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
RXtmwI.exe
Verdict:
Malicious activity
Analysis date:
2023-11-20 16:54:33 UTC
Tags:
rat remcos remote
Link:
https://app.any.run/tasks/7573e621-14c8-45ef-a3d8-07e340becb90

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Remcos
Create hunting rule
Link:
https://www.capesandbox.com/analysis/459364/
Detection(s):
SecuriteInfo.com.Win32.PWSX-gen.17581.11232.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Creating a window
Сreating synchronization primitives
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Creating a process with a hidden window
Creating a file in the %temp% directory
Launching a process
Adding an exclusion to Microsoft Defender
Enabling autorun by creating a file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-vm packed
Link:
https://www.filescan.io/uploads/655b8f2d572de6e10caed39d/reports/276fc13f-cfd2-497e-841b-ef989439dedb/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/7577b9bf9939eb0865359788ce1f0d96eee3f79d401e5fa8ebb3e05d507f46d1
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/f523fc64-df69-47ff-8a02-08787f1f5bb2
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
rans.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1345331
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
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 modify clipboard data
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
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: Remcos
Sigma detected: Scheduled temp file as task from temp location
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
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1345331 Sample: RXtmwI.exe Startdate: 20/11/2023 Architecture: WINDOWS Score: 100 37 geoplugin.net 2->37 43 Found malware configuration 2->43 45 Malicious sample detected (through community Yara rule) 2->45 47 Antivirus detection for URL or domain 2->47 49 11 other signatures 2->49 8 EbxfaWU.exe 5 2->8         started        11 RXtmwI.exe 7 2->11         started        signatures3 process4 file5 51 Antivirus detection for dropped file 8->51 53 Multi AV Scanner detection for dropped file 8->53 55 Contains functionality to bypass UAC (CMSTPLUA) 8->55 63 7 other signatures 8->63 14 schtasks.exe 1 8->14         started        16 EbxfaWU.exe 8->16         started        33 C:\Users\user\AppData\RoamingbxfaWU.exe, PE32 11->33 dropped 35 C:\Users\user\AppData\Local\...\tmpCBE2.tmp, XML 11->35 dropped 57 Uses schtasks.exe or at.exe to add and modify task schedules 11->57 59 Adds a directory exclusion to Windows Defender 11->59 61 Injects a PE file into a foreign processes 11->61 18 RXtmwI.exe 3 14 11->18         started        21 powershell.exe 21 11->21         started        23 schtasks.exe 1 11->23         started        signatures6 process7 dnsIp8 25 conhost.exe 14->25         started        39 91.92.242.85, 4285, 49734 THEZONEBG Bulgaria 18->39 41 geoplugin.net 178.237.33.50, 49735, 80 ATOM86-ASATOM86NL Netherlands 18->41 27 conhost.exe 18->27         started        29 conhost.exe 21->29         started        31 conhost.exe 23->31         started        process9
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/7577b9bf9939eb0865359788ce1f0d96eee3f79d401e5fa8ebb3e05d507f46d1
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/7577b9bf9939eb0865359788ce1f0d96eee3f79d401e5fa8ebb3e05d507f46d1/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2023-11-20 00:07:23 UTC
File Type:
PE (.Net Exe)
Extracted files:
13
AV detection:
16 of 23 (69.57%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=ov33tp4zhhvqqzjvs6em4hyns3xoh545iapf7khlwpqf2ud7i3iq._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
3400571ead34d9cf175d0f208823103bb3cb70097bebda17e263f255cf4c7c74
RemcosRAT
52e86b12783755a700ee53510574a5a3d99ecf2bfa5468438a5addef9bfe75c4
RemcosRAT
741b7b64f2a1eb8aca439c9a4c304a90fba48c41c787114b8aced6c3102a5568
RemcosRAT
d3ff2d6413233eceb1cd5f1953d37a62e4fd3228dc88333d0e12f88ce465fa50
RemcosRAT
db4520e67b7388d613d17e7a0758192feda02f2951e3a3a2f5bd4f2c55efd7a2
RemcosRAT
+ 2'892 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:admin rat
Link:
https://tria.ge/reports/231120-veh37shb84/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Checks computer location settings
Remcos
Malware Config
C2 Extraction:
91.92.242.85:4285
Unpacked files
SH256 hash:
d01f3dea3851602ba5a0586c60430d286adf6fcc7e17aab080601a66630606e5
MD5 hash:
579197d4f760148a9482d1ebde113259
SHA1 hash:
cf6924eb360c7e5a117323bebcb6ee02d2aec86d
Link:
https://www.unpac.me/results/ef6f4b5c-720b-4fb9-a5b1-4e2fee49dd91/
SH256 hash:
813b69a6fec16ed7b48b97fa48e52200bd4a12e73b5da4ab188aea785470e5ce
MD5 hash:
744064e36d9d860e23e2ae1026a2471e
SHA1 hash:
83e74e95486bcc06d8ec99bab38f8519cea83f6f
Link:
https://www.unpac.me/results/ef6f4b5c-720b-4fb9-a5b1-4e2fee49dd91/
SH256 hash:
2591f182342ee9cd09d56338892d140c7eb901fa5bbe693783ca06cfc8d244fc
MD5 hash:
0d87a6677134a7d3fd5bd34b03ee4be2
SHA1 hash:
5cc34db166e7aac14c8251a9930c8f9a36b21b9c
Detections:
Remcos
Create hunting rule
win_remcos_w0
Create hunting rule
win_remcos_auto
Create hunting rule
win_remcos_rat_unpacked
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
Create hunting rule
malware_windows_remcos_rat
Create hunting rule
Link:
https://www.unpac.me/results/ef6f4b5c-720b-4fb9-a5b1-4e2fee49dd91/
Parent samples :
43456ca9a4bb3e0570211c5120caf389756f2a38a6dc38290471a1f58e9fbbfb
7577b9bf9939eb0865359788ce1f0d96eee3f79d401e5fa8ebb3e05d507f46d1
f6c430b1e0bb1a26107c680629aee4c56c858b427eeffd016118e50de980f251
0f9412ecf0cc7aed883fb1dadd80dbd59115b20ad5076b79854ec07e062b00f3
bd4d24cb135194ab4f43d8b8d93ea81b73dad049a686577eb385a00195e69dbd
SH256 hash:
81a9e5e4f2481170ea07fbe19c19308d55453dbe893e283d74f9d34768067068
MD5 hash:
f82eaca89ad8b7c448dca6411ff2a8fa
SHA1 hash:
411af9e95ac5b764865f8f9a032458f9a7cc2501
Link:
https://www.unpac.me/results/ef6f4b5c-720b-4fb9-a5b1-4e2fee49dd91/
SH256 hash:
7577b9bf9939eb0865359788ce1f0d96eee3f79d401e5fa8ebb3e05d507f46d1
MD5 hash:
6c37b81f882ba21df3b985ba287b3ab2
SHA1 hash:
480125d7654b843fa89df16be5ba973f6d206c5f
Link:
https://www.unpac.me/results/ef6f4b5c-720b-4fb9-a5b1-4e2fee49dd91/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/7577b9bf9939/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/7577b9bf9939eb0865359788ce1f0d96eee3f79d401e5fa8ebb3e05d507f46d1

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: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_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: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:Remcos
Create hunting rule
Author:kevoreilly
Description:Remcos Payload
Rule name:REMCOS_RAT_variants
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
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
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

File information

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

Cape
Cape
https://www.capesandbox.com/analysis/459364/

Comments