MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 497a59ce5e1c1e2bdd5e708f21aecd446d9047d17024c73abaeab9d8bfa8c4aa. 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: 15


Intelligence 15 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 497a59ce5e1c1e2bdd5e708f21aecd446d9047d17024c73abaeab9d8bfa8c4aa
SHA3-384 hash: 3f2fab66c0c03e28fc1856a06a272b6523e3d8c93a1363be1a90a5cd8e18629a0c753860394ed1e281299deb4c59a49c
SHA1 hash: 10343686bec4f271cdb9f57816291f021cd721f0
MD5 hash: dfa5d4b7b532d17aaee7837f83837e56
humanhash: stairway-lion-seven-fix
File name:GF098767890000.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:822'784 bytes
First seen:2024-08-19 14:25:05 UTC
Last seen:2024-08-19 15:50:11 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash fc6683d30d9f25244a50fd5357825e79 (92 x Formbook, 52 x AgentTesla, 23 x SnakeKeylogger)
ssdeep 12288:4YV6MorX7qzuC3QHO9FQVHPF51jgcEyaPZQ37ADKjPSNivVMWUq1bcQNim16CHBA:XBXu9HGaVHSS3SKDvVXH62dxg
TLSH T1020523C0EF46A768C8650BB5EB353C241129474ED7BE312030F6F2B4B66AFDA5D52C62
TrID 31.3% (.EXE) UPX compressed Win32 Executable (27066/9/6)
30.7% (.EXE) Win32 EXE Yoda's Crypter (26569/9/4)
12.1% (.EXE) Win64 Executable (generic) (10523/12/4)
7.6% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
5.8% (.EXE) Win16 NE executable (generic) (5038/12/1)
File icon (PE):PE icon
dhash icon 4f07090d0d014f8c (47 x SnakeKeylogger, 17 x Formbook, 13 x AgentTesla)
Reporter abuse_ch
Tags:exe RemcosRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
407
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
GF098767890000.exe
Verdict:
Malicious activity
Analysis date:
2024-08-19 14:27:02 UTC
Tags:
keylogger rat remcos upx
Link:
https://app.any.run/tasks/2ac044b5-4210-4c63-ba14-5702530f69b6

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Trojan.AutoIt.1413.13795.8174.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
93.3%
Link:
https://cyber-fortress.com/docs/result/index.php?id=66c355fbe7ff3f5a063b8c85
Tags:
Generic Stealth Trojan Malware
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
autoit lolbin microsoft_visual_cc packed packed packed shell32 upx
Link:
https://www.filescan.io/uploads/66c356021136ce4923100365/reports/5158e2df-618e-46a6-a93b-462e7aa73657/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/497a59ce5e1c1e2bdd5e708f21aecd446d9047d17024c73abaeab9d8bfa8c4aa
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.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/62949f7b-89d9-4424-a446-5b00e46ade33
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
rans.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1495029
Signature
AI detected suspicious sample
Binary is likely a compiled AutoIt script 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
Drops VBS files to the startup folder
Found malware configuration
Icon mismatch, binary includes an icon from a different legit application in order to fool users
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Drops script at startup location
Sigma detected: Remcos
Sigma detected: WScript or CScript Dropper
Suricata IDS alerts for network traffic
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
Score:
99%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/497a59ce5e1c1e2bdd5e708f21aecd446d9047d17024c73abaeab9d8bfa8c4aa
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/497a59ce5e1c1e2bdd5e708f21aecd446d9047d17024c73abaeab9d8bfa8c4aa/
Threat name:
Win32.Trojan.Vindor
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Status:
Malicious
First seen:
2024-07-18 05:01:15 UTC
File Type:
PE (Exe)
Extracted files:
16
AV detection:
19 of 24 (79.17%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=jf5ftts6dqpcxxk6ochsdlwnirwzar6roasmoov25k45rp5iysva._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:remotehost discovery rat upx
Link:
https://tria.ge/reports/240819-rrve8ayhka/
Behaviour
Suspicious use of WriteProcessMemory
System Location Discovery: System Language Discovery
AutoIT Executable
Drops startup file
Executes dropped EXE
Loads dropped DLL
UPX packed file
Remcos
Malware Config
C2 Extraction:
107.175.229.139:8823
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/a908be9a-30f9-4a47-be25-eaac2c900cdb
Unpacked files
SH256 hash:
02ca9d940b5cd045ec5125a1f4d23a3e77482706006c17bc994da3795f2af6f4
MD5 hash:
fc207eea949864f92019a7657cc82108
SHA1 hash:
d3801051c73bcefcb4eee4bdc354d26b894d7cf9
Detections:
AutoIT_Compiled
Create hunting rule
Link:
https://www.unpac.me/results/4e413868-eaa3-43b8-8935-33f31c7b8b64/
SH256 hash:
93c8b381f044e1ac1d133f49114b5777da366de1f67956feb00ae8f21e80122d
MD5 hash:
f818296d5fd7df66b36f2e6148365dd0
SHA1 hash:
690d6ca628b859f51775bd59834cca167001fe46
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/4e413868-eaa3-43b8-8935-33f31c7b8b64/
Parent samples :
b274b2b65f5ec3256ee9676fac8380af1c47457507e93d5b745156f29f386601
e6643fb9224f9a2ce99cf20b5714e5322645fae8046ef9d439ca17d7ac6abd45
79c7358a9ac82f4d547e027ec64b8a9854ef445ff7d1e85a2b39c0e60bc00c99
74eff35aee68f271e0a9882e41d44abf8f82d058ee4755ddd0832bdc674c520b
497a59ce5e1c1e2bdd5e708f21aecd446d9047d17024c73abaeab9d8bfa8c4aa
1f75782173ef3b1b68650a95b7846bb35faa400d53b52fc1ad8b65a86bc72c88
66c50343775c162862ac27a735c66927a9b3fda4a05cd0eaa21fecbca3f6c490
SH256 hash:
497a59ce5e1c1e2bdd5e708f21aecd446d9047d17024c73abaeab9d8bfa8c4aa
MD5 hash:
dfa5d4b7b532d17aaee7837f83837e56
SHA1 hash:
10343686bec4f271cdb9f57816291f021cd721f0
Detections:
SUSP_Imphash_Mar23_3
Create hunting rule
Link:
https://www.unpac.me/results/4e413868-eaa3-43b8-8935-33f31c7b8b64/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.42
Link:
https://yomi.yoroi.company/submissions/497a59ce5e1c1e2bdd5e708f21aecd446d9047d17024c73abaeab9d8bfa8c4aa

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:SUSP_Imphash_Mar23_3
Create hunting rule
Author:Arnim Rupp (https://github.com/ruppde)
Description:Detects imphash often found in malware samples (Maximum 0,25% hits with search for 'imphash:x p:0' on Virustotal) = 99,75% hits
Reference:Internal Research
Rule name:UPXV200V290MarkusOberhumerLaszloMolnarJohnReiser
Create hunting rule
Author:malware-lu
Rule name:upx_largefile
Create hunting rule
Author:k3nr9

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
CHECK_NXMissing Non-Executable Memory Protectioncritical
Reviews
IDCapabilitiesEvidence
AUTH_APIManipulates User AuthorizationADVAPI32.dll::GetAce
MULTIMEDIA_APICan Play MultimediaWINMM.dll::timeGetTime
WIN_BASE_APIUses Win Base APIKERNEL32.DLL::LoadLibraryA
WIN_NETWORK_APISupports Windows NetworkingMPR.dll::WNetUseConnectionW

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