MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e. 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 8 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e
SHA3-384 hash: 486bdb633e4a306f21d187c1cc77a39bf14d37c3f3c8f8cb302f65a66fafeb1cf2f653ff6a93777d9bc7053a637ace2b
SHA1 hash: fe3a9de406d44c6a9aa5a6ad1fede58f6a0e413f
MD5 hash: 4839930b3f7915602fd40251b76bb9c5
humanhash: california-november-nevada-december
File name:b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'015'527 bytes
First seen:2024-09-04 12:25:43 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'648 x AgentTesla, 19'452 x Formbook, 12'201 x SnakeKeylogger)
ssdeep 12288:vdZshZWHXnhEE8tpUEx1I94L+R49xIUBZjlP4JH0Y6QC4zmEs0mwF0WOs5HvrWZO:vzshZEXw7jIS6RuXGUDQFDMEKW4THM00
Threatray 878 similar samples on MalwareBazaar
TLSH T16F25121AF799DE10C6496671C6D7901543F2AA437673C7573EC812892E013FAAC8EBCE
TrID 67.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
9.7% (.EXE) Win64 Executable (generic) (10523/12/4)
6.0% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
4.1% (.EXE) Win32 Executable (generic) (4504/4/1)
Magika pebin
Reporter adrian__luca
Tags:exe RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
398
Origin country :
HU HU
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e
Verdict:
Malicious activity
Analysis date:
2024-09-04 12:31:41 UTC
Tags:
netreactor rat remcos remote evasion stealer keylogger mpress
Link:
https://app.any.run/tasks/1d2bc5fe-105b-4499-9343-91bda99e8bd6

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Win32.PWSX-gen.17334.14366.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
96.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=66d851def3d7ccf99f8feed6
Tags:
Discovery Encryption Execution Generic Infostealer Network Static Stealth Remcos
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
Connection attempt to an infection source
DNS request
Connection attempt
Sending an HTTP GET request
Reading critical registry keys
Query of malicious DNS domain
Sending a TCP request to an infection source
Stealing user critical data
Adding an exclusion to Microsoft Defender
Enabling autorun by creating a file
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
net_reactor overlay packed packed remcos vbnet
Link:
https://www.filescan.io/uploads/66d851dc01fb39ef6bbcf4ce/reports/c0dfcf58-688e-409b-8cc1-e578ae9b5088/overview
Verdict:
Malicious
Labled as:
Jalapeno.Generic
Link:
https://www.hybrid-analysis.com/sample/b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e
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/c4960d75-656d-4c49-940d-d0ab025a3038
Result
Threat name:
Remcos, PureLog Stealer
Create hunting rule
Detection:
malicious
Classification:
rans.phis.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1504092
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
AI detected suspicious sample
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
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
Suricata IDS alerts for network traffic
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 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
Yara detected WebBrowserPassView password recovery tool
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1504092 Sample: OqPk1nSANG.exe Startdate: 04/09/2024 Architecture: WINDOWS Score: 100 58 method8888.ddns.net 2->58 60 geoplugin.net 2->60 74 Suricata IDS alerts for network traffic 2->74 76 Found malware configuration 2->76 78 Malicious sample detected (through community Yara rule) 2->78 82 16 other signatures 2->82 8 OqPk1nSANG.exe 7 2->8         started        12 TkhOsslQS.exe 5 2->12         started        signatures3 80 Uses dynamic DNS services 58->80 process4 file5 48 C:\Users\user\AppData\Roaming\TkhOsslQS.exe, PE32 8->48 dropped 50 C:\Users\...\TkhOsslQS.exe:Zone.Identifier, ASCII 8->50 dropped 52 C:\Users\user\AppData\Local\Temp\tmp3A2.tmp, XML 8->52 dropped 54 C:\Users\user\AppData\...\OqPk1nSANG.exe.log, ASCII 8->54 dropped 84 Tries to steal Mail credentials (via file registry) 8->84 86 Uses schtasks.exe or at.exe to add and modify task schedules 8->86 88 Adds a directory exclusion to Windows Defender 8->88 90 Injects a PE file into a foreign processes 8->90 14 OqPk1nSANG.exe 3 15 8->14         started        19 powershell.exe 23 8->19         started        21 powershell.exe 23 8->21         started        23 schtasks.exe 1 8->23         started        92 Antivirus detection for dropped file 12->92 94 Multi AV Scanner detection for dropped file 12->94 96 Contains functionality to bypass UAC (CMSTPLUA) 12->96 98 6 other signatures 12->98 25 TkhOsslQS.exe 12->25         started        27 schtasks.exe 12->27         started        signatures6 process7 dnsIp8 62 method8888.ddns.net 154.216.20.211, 49712, 49714, 6902 SKHT-ASShenzhenKatherineHengTechnologyInformationCo Seychelles 14->62 64 geoplugin.net 178.237.33.50, 49716, 80 ATOM86-ASATOM86NL Netherlands 14->64 56 C:\ProgramData\remcos\logs.dat, data 14->56 dropped 66 Detected Remcos RAT 14->66 68 Maps a DLL or memory area into another process 14->68 70 Installs a global keyboard hook 14->70 29 OqPk1nSANG.exe 14->29         started        32 OqPk1nSANG.exe 14->32         started        34 OqPk1nSANG.exe 14->34         started        46 2 other processes 14->46 72 Loading BitLocker PowerShell Module 19->72 36 WmiPrvSE.exe 19->36         started        38 conhost.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 100 Tries to steal Instant Messenger accounts or passwords 29->100 102 Tries to steal Mail credentials (via file / registry access) 29->102 104 Tries to harvest and steal browser information (history, passwords, etc) 32->104
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e/
Threat name:
Win32.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2024-08-30 01:57:00 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
21 of 24 (87.50%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=wsksiiivajsurgwmkhedendegi33d4doi2gekdlaiiioh3sqgfxa._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
00082a148e8eb6745164c0cbf7c142539ada8fb4004deb8b3ae028b7181c552b
RemcosRAT
6cc066c3a33644d8a54496de97374b7a8804b490f7d3ca66c62c1bc6cb695fa5
RemcosRAT
823e15c33f7b0b8a824bb0d2eb2b4353b39726a314fa75c2e84b8c9f2dc0af81
RemcosRAT
9e6875db397f7d76fcae09d39360a73237b11b1fbfcfa7275bb7fe7cf0d87df8
RemcosRAT
cda34c7ddc45a0ac67f0f3745b91686c285bc86f108c5c2deb36c1c3a0fb5a4f
RemcosRAT
e69cbec2c6a28dca27558736ea04f1b998ed42c2e70cf2934b12330df04bf3be
RemcosRAT
+ 868 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:aug 23c collection credential_access discovery execution rat spyware stealer
Link:
https://tria.ge/reports/240904-pl66qa1emd/
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
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Accesses Microsoft Outlook accounts
Checks computer location settings
Reads user/profile data of web browsers
Command and Scripting Interpreter: PowerShell
Credentials from Password Stores: Credentials from Web Browsers
Detected Nirsoft tools
NirSoft MailPassView
NirSoft WebBrowserPassView
Remcos
Malware Config
C2 Extraction:
method8888.ddns.net:6902
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/4f7aa166-eec0-4096-a5ec-95877ae0d66b
Unpacked files
SH256 hash:
bdc4de56f3a251e6ddae87f5540fbec1053eb345ed31b4fb6dfb7032ed078afd
MD5 hash:
d922d06b570580719b0453f6c46d4943
SHA1 hash:
b0f21c1ca04e934bbc1d432eee04f155c2709c5e
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/5ee36e25-bb86-431b-983b-66056d92065a/
Parent samples :
66f3abf06c96c938894a2d721331e7dec08154d681bfae6f2db4dbc35a995e46
bdc4de56f3a251e6ddae87f5540fbec1053eb345ed31b4fb6dfb7032ed078afd
b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e
f94c2da3623066f0066d1e403069a3125160b4200a4d86138cee932cc6970e69
SH256 hash:
e23fc459337bc84b5464890e4e93c8c0f237e15ecc7fab42d0426087c8f5f291
MD5 hash:
8cc00e17c70aa3a61cead8c00b6034d3
SHA1 hash:
8a745ef51bfca1047c1aac4cdbe46bbe046f869d
Link:
https://www.unpac.me/results/5ee36e25-bb86-431b-983b-66056d92065a/
SH256 hash:
eb4dc619fc7b92ae44e8a10e5765a1d45bf288bf5161a24e56d9136d2a355b90
MD5 hash:
4b096dc2426dcc47c8397c372e16236f
SHA1 hash:
419f2f368d3c8dbae81a83fbbf958c7af8598b9f
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/5ee36e25-bb86-431b-983b-66056d92065a/
Parent samples :
66f3abf06c96c938894a2d721331e7dec08154d681bfae6f2db4dbc35a995e46
eb4dc619fc7b92ae44e8a10e5765a1d45bf288bf5161a24e56d9136d2a355b90
b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e
f94c2da3623066f0066d1e403069a3125160b4200a4d86138cee932cc6970e69
SH256 hash:
ec388335057fb565607a8affc9e6452a19bfff49d1c3b5de4a936dbe6b1f608b
MD5 hash:
bf5346a314a1b75124127247fe110256
SHA1 hash:
38b1459c3b08b0f9cf1f0c818a205c1778a682ae
Detections:
SUSP_OBF_NET_Reactor_Indicators_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/5ee36e25-bb86-431b-983b-66056d92065a/
SH256 hash:
624d27a88b1c7f8d14aff615c69bfb1d763617bdb56851c28e61f2f4e02ede93
MD5 hash:
16967794563fd13bb2b4dcf2a6746e34
SHA1 hash:
06c0f5ab0e1a44caf0cf981cebf74c685adf29e5
Link:
https://www.unpac.me/results/5ee36e25-bb86-431b-983b-66056d92065a/
SH256 hash:
d8247e67b46e7bc5e1325068a5e3cae80542f9417ce6b85ee49012dcbf0d22f8
MD5 hash:
f50a5c41865b2297a73a0dd94ebcfcae
SHA1 hash:
00af2a07bd849cbd728520d9bef769428c64acc5
Link:
https://www.unpac.me/results/5ee36e25-bb86-431b-983b-66056d92065a/
SH256 hash:
b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e
MD5 hash:
4839930b3f7915602fd40251b76bb9c5
SHA1 hash:
fe3a9de406d44c6a9aa5a6ad1fede58f6a0e413f
Detections:
SUSP_OBF_NET_Reactor_Indicators_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/5ee36e25-bb86-431b-983b-66056d92065a/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/b49524211502/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/b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e

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:DotNet_Reactor
Create hunting rule
Author:@bartblaze
Description:Identifies .NET Reactor, which offers .NET code protection such as obfuscation, encryption and so on.
Rule name:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:PE_Potentially_Signed_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:PureCrypter
Create hunting rule
Author:@bartblaze
Description:Identifies PureCrypter, .NET loader and obfuscator.
Reference:https://malpedia.caad.fkie.fraunhofer.de/details/win.purecrypter
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

Comments