MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b254541038b979c1c21f489e21bc15f594492aff656bc908aa54033bafb05775. 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 4 File information Comments
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SHA256 hash: b254541038b979c1c21f489e21bc15f594492aff656bc908aa54033bafb05775
SHA3-384 hash: 34db7966cb0c6247555d58e5b7b735844ebf758cc9d0fa7f28265cadfd1942456df6fd760e19212b69cecb6dd6e7c356
SHA1 hash: 77c2abbfee86dc74dab6b7a13e7d0e3cd1589dec
MD5 hash: ec5a7a616e71dd9eaa5453a172a2c952
humanhash: nine-lamp-sink-xray
File name:Bukti-transfer...exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'060'352 bytes
First seen:2025-02-14 05:56:37 UTC
Last seen:Never
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:k+wIZTEg2BKLobjEmOTWcN0QCgqYmt9yX8THRr1OBQeb:k+wIZTPBkEWeCgZmt3p1OBzb
Threatray 4'270 similar samples on MalwareBazaar
TLSH T17235F1C43729E716CD691B709935EEB453A81DACB100F9E25EDA3B8BB9BD2015D0CF06
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 abuse_ch
Tags:exe RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
484
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
Bukti-transfer...exe
Verdict:
Malicious activity
Analysis date:
2025-02-14 05:59:51 UTC
Tags:
remcos rat remote
Link:
https://app.any.run/tasks/35812556-6edb-45c6-a3fd-ceec4eac5014

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:
92.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=67aedb3628ab76d43a5ae0e9
Tags:
keylog shell word
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:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated obfuscated packed packed packer_detected remcos
Link:
https://www.filescan.io/uploads/67aedb37c2f1c1c7a0597c60/reports/4bca6191-8810-4936-9fbf-b27f7c8473b5/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/b254541038b979c1c21f489e21bc15f594492aff656bc908aa54033bafb05775
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/b4dac5c3-e471-490d-ae11-bfa2279c6487
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
rans.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1614822
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
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
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
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: 1614822 Sample: Bukti-transfer...exe Startdate: 14/02/2025 Architecture: WINDOWS Score: 100 51 oktoviyanto.ddns.net 2->51 53 geoplugin.net 2->53 55 Suricata IDS alerts for network traffic 2->55 57 Found malware configuration 2->57 59 Malicious sample detected (through community Yara rule) 2->59 63 10 other signatures 2->63 9 Bukti-transfer...exe 7 2->9         started        signatures3 61 Uses dynamic DNS services 51->61 process4 file5 39 C:\Users\user\AppData\...\libpROjsBrZfd.exe, PE32 9->39 dropped 41 C:\...\libpROjsBrZfd.exe:Zone.Identifier, ASCII 9->41 dropped 43 C:\Users\user\AppData\Local\...\tmpF0CC.tmp, XML 9->43 dropped 45 C:\Users\user\...\Bukti-transfer...exe.log, ASCII 9->45 dropped 67 Uses schtasks.exe or at.exe to add and modify task schedules 9->67 69 Adds a directory exclusion to Windows Defender 9->69 71 Injects a PE file into a foreign processes 9->71 13 libpROjsBrZfd.exe 5 9->13         started        16 Bukti-transfer...exe 2 15 9->16         started        20 powershell.exe 22 9->20         started        22 schtasks.exe 1 9->22         started        signatures6 process7 dnsIp8 73 Multi AV Scanner detection for dropped file 13->73 75 Contains functionalty to change the wallpaper 13->75 77 Contains functionality to steal Chrome passwords or cookies 13->77 85 3 other signatures 13->85 24 libpROjsBrZfd.exe 13->24         started        27 schtasks.exe 1 13->27         started        47 103.186.117.61, 49706, 9373 AARNET-AS-APAustralianAcademicandResearchNetworkAARNe unknown 16->47 49 geoplugin.net 178.237.33.50, 49708, 80 ATOM86-ASATOM86NL Netherlands 16->49 37 C:\ProgramData\remcos\logs.dat, data 16->37 dropped 79 Detected Remcos RAT 16->79 81 Installs a global keyboard hook 16->81 83 Loading BitLocker PowerShell Module 20->83 29 WmiPrvSE.exe 20->29         started        31 conhost.exe 20->31         started        33 conhost.exe 22->33         started        file9 signatures10 process11 signatures12 65 Detected Remcos RAT 24->65 35 conhost.exe 27->35         started        process13
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/b254541038b979c1c21f489e21bc15f594492aff656bc908aa54033bafb05775
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/b254541038b979c1c21f489e21bc15f594492aff656bc908aa54033bafb05775/
Threat name:
ByteCode-MSIL.Backdoor.FormBook
Create hunting rule
Status:
Malicious
First seen:
2025-02-14 01:09:31 UTC
File Type:
PE (.Net Exe)
Extracted files:
22
AV detection:
22 of 24 (91.67%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=wjkfiebyxf44dqq7jcpcdpav6wkeskx7mvv4scfkkqbtxl5qk52q._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
unknown_loader_037
Create hunting rule
Similar samples:
06d30761437ffb30ac9ac077bb3761b5e4c077f3b74f8ed3b7372e104dccf83f
RemcosRAT
21224cc236d63c5d3d7d3f80be375d3c2408f7a91b08eb6a16d70c7db21106d9
RemcosRAT
3f2491926888db2c9d6c7b1a426ff41e1cd4a13bc922156a814b9fe3032ff809
RemcosRAT
ceebb7ca5adbb69127cbf5205e49840c4846cb46e4c5ac568557e7bdf9fe315c
RemcosRAT
d1b50fc6ce79320a88defef33baf6a51e30845bd13ab2b52f7925ba0b8f527cd
RemcosRAT
error
RemcosRAT
+ 4'260 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:feb 09 discovery execution rat
Link:
https://tria.ge/reports/250214-gnnhdsvnhz/
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:
oktoviyanto.ddns.net:9373
103.186.117.61:9373
Verdict:
Malicious
Tags:
Win.Packed.Nanocore-10020802-0
YARA:
n/a
Link:
https://app.threat.zone/submission/522bb823-b6b3-4804-868f-98694219eec3
Unpacked files
SH256 hash:
b254541038b979c1c21f489e21bc15f594492aff656bc908aa54033bafb05775
MD5 hash:
ec5a7a616e71dd9eaa5453a172a2c952
SHA1 hash:
77c2abbfee86dc74dab6b7a13e7d0e3cd1589dec
Link:
https://www.unpac.me/results/1e95d79a-bddd-4b20-be27-52202f86c057/
SH256 hash:
1948435743e8a49eb218a1d4c3ae70c978194d939be82b30e433e06a67cbc5fa
MD5 hash:
0b897877f20339016f5db78b188a9e40
SHA1 hash:
1101899bf77f577c65696c47d47e7ba61203ce3d
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/1e95d79a-bddd-4b20-be27-52202f86c057/
SH256 hash:
1cd9d0d9112033a5b4d906a4b0abe6c4a4bb0aaf21ab0c78f12f2c0c37c042ac
MD5 hash:
2043646e9ce63554826115b04a569f05
SHA1 hash:
27f3eba397a4f2f9ddf94b6d679d2932b49128be
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/1e95d79a-bddd-4b20-be27-52202f86c057/
Parent samples :
21224cc236d63c5d3d7d3f80be375d3c2408f7a91b08eb6a16d70c7db21106d9
b254541038b979c1c21f489e21bc15f594492aff656bc908aa54033bafb05775
SH256 hash:
e712bcd56fe64742c0f674f3acff83490f8103c260ea3389f56151b5066b7cd3
MD5 hash:
7bad4197d1ae020c9049a782eb9a71d2
SHA1 hash:
e1253047ea92beb7d161b106765ad8b03bc86b1e
Link:
https://www.unpac.me/results/1e95d79a-bddd-4b20-be27-52202f86c057/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/b254541038b9/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/b254541038b979c1c21f489e21bc15f594492aff656bc908aa54033bafb05775

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:pe_imphash
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)

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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