MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a2d59c9b9dfe1048afea948f5063f485765b429254fc018d6eefdc4be192106e. 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 17 File information Comments
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SHA256 hash: a2d59c9b9dfe1048afea948f5063f485765b429254fc018d6eefdc4be192106e
SHA3-384 hash: 114caea055c625060c023b464edc76b0df41d9ad13d7996045b22c65e4eab35fbe7bf43db5472113f03decdd018b403b
SHA1 hash: 87b64baab0c3b8bf7f718937debf02102a4649a9
MD5 hash: 3deab4a2b72656bb263e29ee4ab44983
humanhash: football-burger-tango-bulldog
File name:a2d59c9b9dfe1048afea948f5063f485765b429254fc018d6eefdc4be192106e
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'042'432 bytes
First seen:2024-07-03 12:49:04 UTC
Last seen:2024-07-03 13:36:32 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'661 x AgentTesla, 19'474 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 24576:ypp36n2RoIbt/FN6k6B00YyAWfv0RYk8:yppKUt9YVLSS0R
Threatray 4'241 similar samples on MalwareBazaar
TLSH T143252340F3A9D8F9DD9E47B148AEA8100772394E90B5970E24EA7B5AD97374314E3B0F
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)
File icon (PE):PE icon
dhash icon 79e4e4ccccc4ccc0 (16 x AgentTesla, 3 x njrat, 3 x GuLoader)
Reporter adrian__luca
Tags:exe RemcosRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
363
Origin country :
HU HU
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
a2d59c9b9dfe1048afea948f5063f485765b429254fc018d6eefdc4be192106e.exe
Verdict:
Malicious activity
Analysis date:
2024-07-03 12:53:39 UTC
Tags:
rat remcos remote evasion stealer mpress
Link:
https://app.any.run/tasks/bfbf7105-364c-45a7-8e74-a841d1e6b076

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.BackDoor.AgentTeslaNET.9.19994.4850.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=66854963505ae615975cdb44win10vpnfull_triage
Tags:
Execution Generic Infostealer Network Stealth Msil
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
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
Connection attempt
Setting a keyboard event handler
Sending a custom TCP request
DNS request
Sending an HTTP GET request
Searching for synchronization primitives
Reading critical registry keys
Launching the default Windows debugger (dwwin.exe)
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:
packed remcos
Link:
https://www.filescan.io/uploads/66854901910ce98966fb978b/reports/d93bd19d-8fa1-49e7-87c6-03c4c174978e/overview
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/a2d59c9b9dfe1048afea948f5063f485765b429254fc018d6eefdc4be192106e
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/943d82ae-5a41-4a4b-9c24-6d98704773a7
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/1466894
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
AI detected suspicious sample
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
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
Injects a PE file into a foreign processes
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)
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: 1466894 Sample: wcNDx6MT9O.exe Startdate: 03/07/2024 Architecture: WINDOWS Score: 100 56 geoplugin.net 2->56 70 Found malware configuration 2->70 72 Malicious sample detected (through community Yara rule) 2->72 74 Antivirus / Scanner detection for submitted sample 2->74 76 12 other signatures 2->76 8 wcNDx6MT9O.exe 7 2->8         started        12 udDHoOiYEFTRf.exe 5 2->12         started        signatures3 process4 file5 46 C:\Users\user\AppData\...\udDHoOiYEFTRf.exe, PE32 8->46 dropped 48 C:\...\udDHoOiYEFTRf.exe:Zone.Identifier, ASCII 8->48 dropped 50 C:\Users\user\AppData\Local\...\tmp3326.tmp, XML 8->50 dropped 52 C:\Users\user\AppData\...\wcNDx6MT9O.exe.log, ASCII 8->52 dropped 78 Tries to steal Mail credentials (via file registry) 8->78 80 Uses schtasks.exe or at.exe to add and modify task schedules 8->80 82 Adds a directory exclusion to Windows Defender 8->82 84 Injects a PE file into a foreign processes 8->84 14 wcNDx6MT9O.exe 3 16 8->14         started        19 powershell.exe 22 8->19         started        21 powershell.exe 23 8->21         started        23 schtasks.exe 1 8->23         started        86 Antivirus detection for dropped file 12->86 88 Multi AV Scanner detection for dropped file 12->88 90 Contains functionality to bypass UAC (CMSTPLUA) 12->90 92 6 other signatures 12->92 25 udDHoOiYEFTRf.exe 12->25         started        27 schtasks.exe 12->27         started        signatures6 process7 dnsIp8 58 107.173.4.16, 2560, 49701, 49703 AS-COLOCROSSINGUS United States 14->58 60 geoplugin.net 178.237.33.50, 49704, 80 ATOM86-ASATOM86NL Netherlands 14->60 54 C:\ProgramData\remcos\logs.dat, data 14->54 dropped 62 Detected Remcos RAT 14->62 64 Maps a DLL or memory area into another process 14->64 66 Installs a global keyboard hook 14->66 29 wcNDx6MT9O.exe 14->29         started        32 wcNDx6MT9O.exe 14->32         started        34 wcNDx6MT9O.exe 14->34         started        68 Loading BitLocker PowerShell Module 19->68 36 conhost.exe 19->36         started        38 WmiPrvSE.exe 19->38         started        40 conhost.exe 21->40         started        42 conhost.exe 23->42         started        44 conhost.exe 27->44         started        file9 signatures10 process11 signatures12 94 Tries to steal Instant Messenger accounts or passwords 29->94 96 Tries to steal Mail credentials (via file / registry access) 29->96 98 Tries to harvest and steal browser information (history, passwords, etc) 32->98
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/a2d59c9b9dfe1048afea948f5063f485765b429254fc018d6eefdc4be192106e
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/a2d59c9b9dfe1048afea948f5063f485765b429254fc018d6eefdc4be192106e/
Threat name:
ByteCode-MSIL.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2024-05-16 04:08:57 UTC
AV detection:
28 of 38 (73.68%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=ulkzzg457yierl7ksshvay7uqv3fwquskt6addlo57oexymscbxa._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
472a8fbff35cdda49a870d372fa6da50defd8480348438e245f11aad954642d1
RemcosRAT
866de3bdc1cc207c818212511641cdf5e6220f304619a26b5e9cb2d2b9c8a309
RemcosRAT
a1fafc7d9825ebd9d7dc533f005452ce890bda0e668a05d9badadbfe08d2e22a
RemcosRAT
ac28e104b06d7025bab07468070e74b3ea0017b34d25e48150b6c55f8ffda4bf
RemcosRAT
+ 4'231 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/240703-p2w1pawdjc/
Behaviour
Scheduled Task/Job: Scheduled Task
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
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:
107.173.4.16:2560
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/a1ace429-0785-4c2c-892e-692a63a5a011
Unpacked files
SH256 hash:
ecce7c5e125c4a12054ef212a0a6c0e54817fe3f9f78e73170b9a4977af7d007
MD5 hash:
741a1337d034d680b59b6aeb08c1413a
SHA1 hash:
f14c4aaeab2830d4330b8aeeccdf5c0309177d7f
Link:
https://www.unpac.me/results/b07f16e2-74a2-4844-b363-17f4c14ff3e2/
SH256 hash:
f540e8d603962027b3a1f8b86d035281bfbdd3a05a621ead255825bc2082632a
MD5 hash:
d172f59251b97b415b621d302e1be2b7
SHA1 hash:
b1534e603749c901b5ac185f20e281f6be7fa908
Link:
https://www.unpac.me/results/b07f16e2-74a2-4844-b363-17f4c14ff3e2/
SH256 hash:
235b2b0d773b4725eba9a12b3fd47b7299b6fcdab4014d7b237312bd0855f5f6
MD5 hash:
181cebce42a9c0f078fd4a3205f16498
SHA1 hash:
a8c8efd1cdfb936136a08c42b9cfd762fe617769
Detections:
Remcos
Create hunting rule
win_remcos_auto
Create hunting rule
win_remcos_w0
Create hunting rule
malware_windows_remcos_rat
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
Create hunting rule
Link:
https://www.unpac.me/results/b07f16e2-74a2-4844-b363-17f4c14ff3e2/
Parent samples :
7e6ba6f340da6ec5121f2c910b376fe4a23adeed64ab239a295864c136eb40b1
a2d59c9b9dfe1048afea948f5063f485765b429254fc018d6eefdc4be192106e
SH256 hash:
27ddc96465ac70b602e730ca4b28018a2875f5aca4215f3d8608b9defc8bf23d
MD5 hash:
1b2614489be216f14010dea5dee50dc5
SHA1 hash:
046c2462662dc3adea1c79121b4d865665850e23
Link:
https://www.unpac.me/results/b07f16e2-74a2-4844-b363-17f4c14ff3e2/
SH256 hash:
a2d59c9b9dfe1048afea948f5063f485765b429254fc018d6eefdc4be192106e
MD5 hash:
3deab4a2b72656bb263e29ee4ab44983
SHA1 hash:
87b64baab0c3b8bf7f718937debf02102a4649a9
Link:
https://www.unpac.me/results/b07f16e2-74a2-4844-b363-17f4c14ff3e2/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/a2d59c9b9dfe/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/a2d59c9b9dfe1048afea948f5063f485765b429254fc018d6eefdc4be192106e

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:BitcoinAddress
Create hunting rule
Author:Didier Stevens (@DidierStevens)
Description:Contains a valid Bitcoin address
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
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

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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