MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 9c39d381f96fb45ffcb826c90aaee8c6818767eabf44e757fa5518217611d7c7. 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 23 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 9c39d381f96fb45ffcb826c90aaee8c6818767eabf44e757fa5518217611d7c7
SHA3-384 hash: 489fb674d673c3a7813e5d1c7fe5ff4e6c670be9b5dffb35ffc6ef453ebdbc1070333c2a2ed8b4b4da432c5e04e7cf40
SHA1 hash: a33a467ae0d0ceaefcefaf7a5b6f7670ec1c3062
MD5 hash: 8b0f66978d1934eec07b6213c2c8037a
humanhash: mike-carolina-saturn-triple
File name:Bukti_Transfer...pdf.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'398'272 bytes
First seen:2025-02-16 22:56:05 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'647 x AgentTesla, 19'451 x Formbook, 12'201 x SnakeKeylogger)
ssdeep 24576:LaHUIH+zim0CY8iMklskJzNbpYk6B9DNSLAFi02Kyh6qqRztvjnKPXlof6btJ:LaHUIH+g8iMklfhtGkuDqAMfdh6qqttY
Threatray 4'274 similar samples on MalwareBazaar
TLSH T1CB55EFE4B793E306CF1B1574803DEDB613941DE8B080B5A72ED63F4779B8B21580AB69
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10522/11/4)
6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.3% (.EXE) Win32 Executable (generic) (4504/4/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Magika pebin
File icon (PE):PE icon
dhash icon f4fbb3e4e486d3e9 (7 x RemcosRAT, 4 x SnakeKeylogger, 3 x AgentTesla)
Reporter BastianHein
Tags:exe RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
777
Origin country :
CL CL
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
386491d4382825bbf7f0b95d625a73c126ce80a15b8c419444455b4cb07cda4f
Verdict:
Malicious activity
Analysis date:
2025-02-16 22:43:45 UTC
Tags:
arch-exec rat remcos remote
Link:
https://app.any.run/tasks/1a6fd9bd-b173-4b4f-8aad-863713db26dd

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
Win.Packed.Nanocore-10020802-0
Create hunting rule

Verdict:
Malicious
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=67b26a20a0fd713c335b4d15
Tags:
underscore infosteal remcos
Result
Verdict:
Malware
Maliciousness:

Behaviour
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
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Setting a keyboard event handler
DNS request
Connection attempt
Sending a custom TCP request
Sending an HTTP GET request
Adding an exclusion to Microsoft Defender
Enabling autorun by creating a file
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
masquerade obfuscated obfuscated obfuscated packed packed packer_detected
Link:
https://www.filescan.io/uploads/67b26d0b41f6d21e6a3bee4f/reports/2b5cc698-d036-42bb-9757-742888a71887/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/9c39d381f96fb45ffcb826c90aaee8c6818767eabf44e757fa5518217611d7c7
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/773c559d-890c-4f31-aa3a-016b1c30b7a9
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
rans.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1616515
Signature
.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
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
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Installs a global keyboard hook
Joe Sandbox ML detected suspicious sample
Loading BitLocker PowerShell Module
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
Sigma detected: Suspicious Double Extension File Execution
Suricata IDS alerts for network traffic
Uses dynamic DNS services
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: 1616515 Sample: Bukti_Transfer...pdf.exe Startdate: 16/02/2025 Architecture: WINDOWS Score: 100 45 austin99.duckdns.org 2->45 47 geoplugin.net 2->47 61 Suricata IDS alerts for network traffic 2->61 63 Found malware configuration 2->63 65 Malicious sample detected (through community Yara rule) 2->65 69 13 other signatures 2->69 8 Bukti_Transfer...pdf.exe 7 2->8         started        12 DpEFdRPYuiXBgv.exe 5 2->12         started        signatures3 67 Uses dynamic DNS services 45->67 process4 file5 35 C:\Users\user\AppData\...\DpEFdRPYuiXBgv.exe, PE32 8->35 dropped 37 C:\...\DpEFdRPYuiXBgv.exe:Zone.Identifier, ASCII 8->37 dropped 39 C:\Users\user\AppData\Local\...\tmp1D58.tmp, XML 8->39 dropped 41 C:\Users\...\Bukti_Transfer...pdf.exe.log, ASCII 8->41 dropped 71 Uses schtasks.exe or at.exe to add and modify task schedules 8->71 73 Adds a directory exclusion to Windows Defender 8->73 75 Injects a PE file into a foreign processes 8->75 14 Bukti_Transfer...pdf.exe 2 16 8->14         started        19 powershell.exe 23 8->19         started        21 schtasks.exe 1 8->21         started        77 Antivirus detection for dropped file 12->77 79 Multi AV Scanner detection for dropped file 12->79 81 Contains functionalty to change the wallpaper 12->81 83 4 other signatures 12->83 23 DpEFdRPYuiXBgv.exe 12->23         started        25 schtasks.exe 1 12->25         started        signatures6 process7 dnsIp8 49 austin99.duckdns.org 185.213.83.33, 49734, 9373 QUICKPACKETUS Germany 14->49 51 103.186.117.61, 64599, 9373 AARNET-AS-APAustralianAcademicandResearchNetworkAARNe unknown 14->51 53 geoplugin.net 178.237.33.50, 64600, 80 ATOM86-ASATOM86NL Netherlands 14->53 43 C:\ProgramData\remcos\logs.dat, data 14->43 dropped 55 Detected Remcos RAT 14->55 57 Installs a global keyboard hook 14->57 59 Loading BitLocker PowerShell Module 19->59 27 WmiPrvSE.exe 19->27         started        29 conhost.exe 19->29         started        31 conhost.exe 21->31         started        33 conhost.exe 25->33         started        file9 signatures10 process11
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/9c39d381f96fb45ffcb826c90aaee8c6818767eabf44e757fa5518217611d7c7
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/9c39d381f96fb45ffcb826c90aaee8c6818767eabf44e757fa5518217611d7c7/
Threat name:
ByteCode-MSIL.Trojan.Jalapeno
Create hunting rule
Status:
Malicious
First seen:
2025-02-16 22:43:46 UTC
File Type:
PE (.Net Exe)
Extracted files:
43
AV detection:
22 of 37 (59.46%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=tq45hapzn62f77fye3eqvlxiy2ayoz7kx5coov72kumcc5qr27dq._file
Verdict:
malicious
Label(s):
unknown_loader_037
Create hunting rule
remcos
Create hunting rule
Similar samples:
59558d5bc10450ec63904f60f61b13f2e2feba2160c02bdd50eba25cd1b3b355
RemcosRAT
5e95fb52da2144a06a66a593a6f12877108ebcdeb69f8f60ad010831d4fce1eb
RemcosRAT
8c62537b7b875c364a79b98adaa8d341b4a52e4d0a27697f0f07b1209ed53301
RemcosRAT
e67ae0c8bca17f912e1fdcc8dacac7e967ac9dfcfc031d944663043c99f32ea7
RemcosRAT
error
RemcosRAT
+ 4'264 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:feb 16 discovery execution rat
Link:
https://tria.ge/reports/250216-2wqmya1pem/
Behaviour
Scheduled Task/Job: Scheduled Task
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
System Network Configuration Discovery: Internet Connection Discovery
Suspicious use of SetThreadContext
Checks computer location settings
Command and Scripting Interpreter: PowerShell
Downloads MZ/PE file
Remcos
Remcos family
Malware Config
C2 Extraction:
austin99.duckdns.org:9373
103.186.117.61:9373
heksaa3030.redirectme.net:9373
Verdict:
Malicious
Tags:
Win.Packed.Nanocore-10020802-0
YARA:
n/a
Link:
https://app.threat.zone/submission/e79e77ef-4750-4663-aebe-9a31fb9ed8af
Unpacked files
SH256 hash:
9c39d381f96fb45ffcb826c90aaee8c6818767eabf44e757fa5518217611d7c7
MD5 hash:
8b0f66978d1934eec07b6213c2c8037a
SHA1 hash:
a33a467ae0d0ceaefcefaf7a5b6f7670ec1c3062
Link:
https://www.unpac.me/results/406bb3cb-9958-4036-a6df-d5ded06556ae/
SH256 hash:
2974fa53962265a330f44fc7ae21553028c1d7db219a9ba48dc86d0b93c39af7
MD5 hash:
d9fa4d69b1316af734f39cbab3b98d3f
SHA1 hash:
34929d993d9714cff2d7e8fd20fd5609b6d73be0
Detections:
win_remcos_w0
Create hunting rule
win_remcos_auto
Create hunting rule
Remcos
Create hunting rule
malware_windows_remcos_rat
Create hunting rule
win_remcos_rat_unpacked
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
Create hunting rule
Link:
https://www.unpac.me/results/406bb3cb-9958-4036-a6df-d5ded06556ae/
Parent samples :
9c39d381f96fb45ffcb826c90aaee8c6818767eabf44e757fa5518217611d7c7
d5082cf733716620aa756f1c0cab59246ddab03b8c8ef06cdada69cbaa41593a
SH256 hash:
8f4852ef8101d5b2f267f18e1d149f0e2029f1c438d02d3738c50b4815d6ac6e
MD5 hash:
7f6fd0ebe2a87707c0c5214849b6f669
SHA1 hash:
6b03ce2d970f65379051262f20955385eebf8433
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/406bb3cb-9958-4036-a6df-d5ded06556ae/
SH256 hash:
e712bcd56fe64742c0f674f3acff83490f8103c260ea3389f56151b5066b7cd3
MD5 hash:
7bad4197d1ae020c9049a782eb9a71d2
SHA1 hash:
e1253047ea92beb7d161b106765ad8b03bc86b1e
Link:
https://www.unpac.me/results/406bb3cb-9958-4036-a6df-d5ded06556ae/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/9c39d381f96f/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.

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:golang_bin_JCorn_CSC846
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
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_EventViewer
Create hunting rule
Author:ditekSHen
Description:detects Windows exceutables potentially bypassing UAC using eventvwr.exe
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:NETexecutableMicrosoft
Create hunting rule
Author:malware-lu
Rule name:pe_detect_tls_callbacks
Create hunting rule
Rule name:pe_imphash
Create hunting rule
Rule name:RANSOMWARE
Create hunting rule
Author:ToroGuitar
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:Sus_Obf_Enc_Spoof_Hide_PE
Create hunting rule
Author:XiAnzheng
Description:Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)
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_rat_unpacked
Create hunting rule
Author:Matthew @ Embee_Research
Description:Detects strings present in remcos rat Samples.
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 (GUARD_CF)high

Comments