MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f5478a5c7ac7dcb529af143345acd8aaaaa66b9cd92bcd38b645a5ded6c2f097. 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: 18


Intelligence 18 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: f5478a5c7ac7dcb529af143345acd8aaaaa66b9cd92bcd38b645a5ded6c2f097
SHA3-384 hash: d6f7c7a4b377cfac148a43d3168de146c61a5ef3a75e82dee49d79b4afc4fdec1bb5bccb09d6a87d109006f3f6753dff
SHA1 hash: 750b8a031c673a71ebbbe520724bc2cd29921bc2
MD5 hash: fbafd938c232c93e5133dc40ce9e82a2
humanhash: pizza-edward-yankee-xray
File name:r______________.scr
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:995'840 bytes
First seen:2025-03-25 08:00:06 UTC
Last seen:2025-04-08 08:15:58 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'608 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 24576:tY9n6nuMkdrAKyZ5xCEwey7PdRf9SdZ5/L2/:tYonuMkdrAHjTbyblM5/L2/
TLSH T17325126CAA48C613CAD15BB85A71F676137C1E9DE912D3078FECACDBB976F005C05282
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
Reporter FXOLabs
Tags:exe RemcosRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
458
Origin country :
BR BR
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
test1.zip
Verdict:
No threats detected
Analysis date:
2025-03-25 09:40:46 UTC
Tags:
arch-exec
Link:
https://app.any.run/tasks/30c7a9da-8ee4-45b3-bcc6-735fc2d6e2ec

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=67e262cbacb044ea849eaa0a
Tags:
remcos krypt sage msil
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Restart of the analyzed sample
Creating a file
Сreating synchronization primitives
Creating a process from a recently created file
Connection attempt
Unauthorized injection to a recently created process
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a recently created process by context flags manipulation
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
masquerade obfuscated packed packed packer_detected remcos
Link:
https://www.filescan.io/uploads/67e262a07d0ad5304e2d1432/reports/bea71b0f-ece2-4e22-8e23-05683fb51230/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/f5478a5c7ac7dcb529af143345acd8aaaaa66b9cd92bcd38b645a5ded6c2f097
Result
Verdict:
SUSPICIOUS
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/7a63a780-0d47-4581-a784-d4296eaa37f7
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
rans.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1647791
Signature
.NET source code contains potential unpacker
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
Creates autostart registry keys with suspicious names
Found malware configuration
Injects a PE file into a foreign processes
Joe Sandbox ML detected suspicious sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Yara detected AntiVM3
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1647791 Sample: r______________.scr.exe Startdate: 25/03/2025 Architecture: WINDOWS Score: 100 50 Found malware configuration 2->50 52 Malicious sample detected (through community Yara rule) 2->52 54 Multi AV Scanner detection for submitted file 2->54 56 6 other signatures 2->56 8 r______________.scr.exe 3 2->8         started        12 wsp.exe 2 2->12         started        14 wsp.exe 2 2->14         started        16 wsp.exe 2 2->16         started        process3 file4 42 C:\Users\user\...\r______________.scr.exe.log, ASCII 8->42 dropped 60 Contains functionality to bypass UAC (CMSTPLUA) 8->60 62 Contains functionalty to change the wallpaper 8->62 64 Contains functionality to steal Chrome passwords or cookies 8->64 68 2 other signatures 8->68 18 r______________.scr.exe 2 4 8->18         started        66 Injects a PE file into a foreign processes 12->66 22 wsp.exe 12->22         started        24 wsp.exe 14->24         started        26 wsp.exe 14->26         started        28 wsp.exe 16->28         started        30 wsp.exe 16->30         started        signatures5 process6 file7 38 C:\ProgramData\WSP\wsp.exe, PE32 18->38 dropped 40 C:\ProgramData\WSP\wsp.exe:Zone.Identifier, ASCII 18->40 dropped 58 Creates autostart registry keys with suspicious names 18->58 32 wsp.exe 3 18->32         started        signatures8 process9 signatures10 46 Multi AV Scanner detection for dropped file 32->46 48 Injects a PE file into a foreign processes 32->48 35 wsp.exe 4 1 32->35         started        process11 dnsIp12 44 104.250.180.178, 7902 M247GB United States 35->44
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/f5478a5c7ac7dcb529af143345acd8aaaaa66b9cd92bcd38b645a5ded6c2f097
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/f5478a5c7ac7dcb529af143345acd8aaaaa66b9cd92bcd38b645a5ded6c2f097/
Threat name:
ByteCode-MSIL.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2025-03-25 08:00:33 UTC
File Type:
PE (.Net Exe)
Extracted files:
8
AV detection:
19 of 24 (79.17%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=6vdyuxd2y7olkknpcqzullgyvkvkm2443ev42ofwiws55vwc6clq._file
Verdict:
malicious
Label(s):
unc_loader_037
Create hunting rule
Similar samples:
error
RemcosRAT
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:remotehost discovery persistence rat
Link:
https://tria.ge/reports/250325-jv9ejswqt7/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Adds Run key to start application
Checks computer location settings
Executes dropped EXE
Remcos
Remcos family
Malware Config
C2 Extraction:
104.250.180.178:7902
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/72a8ecc5-69de-42de-b5f1-a2ac005fd1a6
Unpacked files
SH256 hash:
f5478a5c7ac7dcb529af143345acd8aaaaa66b9cd92bcd38b645a5ded6c2f097
MD5 hash:
fbafd938c232c93e5133dc40ce9e82a2
SHA1 hash:
750b8a031c673a71ebbbe520724bc2cd29921bc2
Link:
https://www.unpac.me/results/2c71f485-f6f9-4690-be4e-fd5442845fb5/
SH256 hash:
eb129ab62c54435d6d1a818b479f866c58e9159181f00e928158cac587720fe8
MD5 hash:
c11d67d4288a89dc7905a0e0e6ead29e
SHA1 hash:
2398b9271d778b4a18c825d20782ec643ef3b11c
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/2c71f485-f6f9-4690-be4e-fd5442845fb5/
SH256 hash:
bbac028c0470bfe98177dde3bbd82b48a316a992fb51797a79e1aca9064bfb9f
MD5 hash:
2e794cc77833e2e5f4a8514a9014e5e8
SHA1 hash:
288d60c2f36ce703122034fec75f56096595a629
Link:
https://www.unpac.me/results/2c71f485-f6f9-4690-be4e-fd5442845fb5/
SH256 hash:
f6a1a48142e71410ea3b2665cb253713dff56bd21af6180d9c9094947c4b9c8f
MD5 hash:
e2511446137eaaaef3ae3a2cabd9ac5f
SHA1 hash:
a244b12791c29b98e9cd52a67d8f5b1fe0b67fc6
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_CMSTPCOM
Create hunting rule
Link:
https://www.unpac.me/results/2c71f485-f6f9-4690-be4e-fd5442845fb5/
Parent samples :
f5478a5c7ac7dcb529af143345acd8aaaaa66b9cd92bcd38b645a5ded6c2f097
d7bc6079ee97a1977556f37fdbe89f064ad7bf206448058588a109902bd08ac0
33a8c3e40fddaad6562484999ff394278be8b5310591a73bcd01573354dd20d5
034d50a32f4d02f98159dfe1a44bcd3f87aea96af49340d516ed4a6e744929a3
d326515f14a0af4f4642d3f79806f8d8d75f4b310f3670ed6803f7dadd737279
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/f5478a5c7ac7/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/f5478a5c7ac7dcb529af143345acd8aaaaa66b9cd92bcd38b645a5ded6c2f097

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:AgentTesla_DIFF_Common_Strings_01
Create hunting rule
Author:schmidtsz
Description:Identify partial Agent Tesla strings
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.

Malspam

RemcosRAT

Executable exe f5478a5c7ac7dcb529af143345acd8aaaaa66b9cd92bcd38b645a5ded6c2f097

(this sample)

  
Delivery method
Distributed via e-mail attachment

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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