MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8a52d87aa80812e9d072f7f197f320f8a7d253ddc1a6070b014cb35189d3fddd. 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 5 File information Comments
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SHA256 hash: 8a52d87aa80812e9d072f7f197f320f8a7d253ddc1a6070b014cb35189d3fddd
SHA3-384 hash: f949fc70aa852bec4d62c95368a948e649f2ea964a73ed52b929398873c1dc38828de80f9ce87fb2483d019fbe0a524e
SHA1 hash: 5c6bcce410b28b15be0bbde30dd3589a9902eded
MD5 hash: cc8376cea9336a97ac76e52ad86dab44
humanhash: carolina-blue-mockingbird-stream
File name:SecuriteInfo.com.W32.MSIL_Agent.GXH.gen.Eldorado.21748.1972
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'096'192 bytes
First seen:2024-01-05 11:13:26 UTC
Last seen:2024-01-08 15:05:58 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'663 x AgentTesla, 19'478 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 24576:4olzQOIF6HX6hIVhoK768OIoC+/Ucp/AYRyQgmx:JlMOIF6HX6hshFOIV8U4/qO
Threatray 3'281 similar samples on MalwareBazaar
TLSH T1A935AF0037719BB9CC229DFAD800B51CA936956158D3C12255EF3D9CBCCBE8847ADE6B
TrID 35.4% (.EXE) Win64 Executable (generic) (10523/12/4)
22.1% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
15.1% (.EXE) Win32 Executable (generic) (4505/5/1)
6.9% (.ICL) Windows Icons Library (generic) (2059/9)
6.8% (.EXE) OS/2 Executable (generic) (2029/13)
Reporter SecuriteInfoCom
Tags:exe RemcosRAT

Intelligence

File Origin
# of uploads :
4
# of downloads :
343
Origin country :
FR FR
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
8a52d87aa80812e9d072f7f197f320f8a7d253ddc1a6070b014cb35189d3fddd.exe
Verdict:
Malicious activity
Analysis date:
2024-01-05 11:47:22 UTC
Tags:
rat remcos
Link:
https://app.any.run/tasks/1811d865-d4cf-4b73-9296-563bc923aeed

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Remcos
Create hunting rule
Link:
https://www.capesandbox.com/analysis/469581/
Detection(s):
SecuriteInfo.com.W32.MSIL_Agent.GXH.gen.Eldorado.21743.4933.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Launching a process
Creating a file
Restart of the analyzed sample
Сreating synchronization primitives
Creating a process from a recently created file
Searching for synchronization primitives
Launching the default Windows debugger (dwwin.exe)
Sending an HTTP GET request
Searching for the window
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
Enabling autorun by creating a file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
masquerade packed remcos
Link:
https://www.filescan.io/uploads/6597e47bb4e856b728351e60/reports/f467e74e-1c38-4ce8-83c0-810b0d364ef0/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_90%
Link:
https://www.hybrid-analysis.com/sample/8a52d87aa80812e9d072f7f197f320f8a7d253ddc1a6070b014cb35189d3fddd
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/82035129-cd8b-4902-bb93-3f1330c7e19d
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
rans.spre.phis.troj.adwa.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1370290
Signature
.NET source code contains potential unpacker
.NET source code references suspicious native API functions
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
Bypasses PowerShell execution policy
C2 URLs / IPs found in malware configuration
Contains functionality to bypass UAC (CMSTPLUA)
Contains functionality to modify clipboard data
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
Creates executable files without a name
Delayed program exit found
Drops PE files to the startup folder
Found malware configuration
Injects a PE file into a foreign processes
Installs a global keyboard hook
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 domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Powershell drops PE file
Sigma detected: Copy file to startup via Powershell
Sigma detected: Remcos
Snort IDS alert for network traffic
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Instant Messenger accounts or passwords
Writes to foreign memory regions
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: 1370290 Sample: SecuriteInfo.com.W32.MSIL_A... Startdate: 05/01/2024 Architecture: WINDOWS Score: 100 74 geoplugin.net 2->74 80 Snort IDS alert for network traffic 2->80 82 Multi AV Scanner detection for domain / URL 2->82 84 Found malware configuration 2->84 86 23 other signatures 2->86 10 .exe 3 2->10         started        13 remcos.exe 2->13         started        15 SecuriteInfo.com.W32.MSIL_Agent.GXH.gen.Eldorado.21748.1972.exe 3 2->15         started        17 remcos.exe 2->17         started        signatures3 process4 signatures5 116 Injects a PE file into a foreign processes 10->116 19 .exe 2 4 10->19         started        23 powershell.exe 10 10->23         started        25 remcos.exe 13->25         started        28 powershell.exe 13->28         started        118 Bypasses PowerShell execution policy 15->118 30 powershell.exe 13 15->30         started        32 SecuriteInfo.com.W32.MSIL_Agent.GXH.gen.Eldorado.21748.1972.exe 15->32         started        34 powershell.exe 17->34         started        36 remcos.exe 17->36         started        process6 dnsIp7 68 C:\ProgramData\Remcos\remcos.exe, PE32 19->68 dropped 88 Creates autostart registry keys with suspicious names 19->88 38 remcos.exe 3 19->38         started        41 conhost.exe 23->41         started        76 107.175.229.139, 49741, 49743, 8087 AS-COLOCROSSINGUS United States 25->76 78 geoplugin.net 178.237.33.50, 49742, 80 ATOM86-ASATOM86NL Netherlands 25->78 70 C:\ProgramData\Remcos\logs.dat, data 25->70 dropped 90 Maps a DLL or memory area into another process 25->90 92 Installs a global keyboard hook 25->92 43 remcos.exe 25->43         started        45 remcos.exe 25->45         started        47 remcos.exe 25->47         started        49 conhost.exe 28->49         started        72 C:\Users\user\AppData\Roaming\...\.exe, PE32 30->72 dropped 94 Creates executable files without a name 30->94 96 Drops PE files to the startup folder 30->96 98 Powershell drops PE file 30->98 51 conhost.exe 30->51         started        53 WerFault.exe 21 16 32->53         started        55 conhost.exe 34->55         started        file8 signatures9 process10 signatures11 100 Antivirus detection for dropped file 38->100 102 Multi AV Scanner detection for dropped file 38->102 104 Machine Learning detection for dropped file 38->104 110 2 other signatures 38->110 57 remcos.exe 38->57         started        60 powershell.exe 12 38->60         started        106 Tries to steal Instant Messenger accounts or passwords 43->106 108 Tries to harvest and steal browser information (history, passwords, etc) 43->108 62 WerFault.exe 47->62         started        process12 signatures13 112 Writes to foreign memory regions 57->112 114 Maps a DLL or memory area into another process 57->114 64 iexplore.exe 57->64         started        66 conhost.exe 60->66         started        process14
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/8a52d87aa80812e9d072f7f197f320f8a7d253ddc1a6070b014cb35189d3fddd
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/8a52d87aa80812e9d072f7f197f320f8a7d253ddc1a6070b014cb35189d3fddd/
Threat name:
Win32.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2024-01-05 11:14:05 UTC
File Type:
PE (.Net Exe)
Extracted files:
11
AV detection:
16 of 22 (72.73%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=rjjnq6vibajotuds67yzp4za7ct5eu65ygtaocybjszvdcot7xoq._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
2db991b9ae725ec59f9a29654e4c5f8d2bf363662cfa8d271a8692fea4883744
RemcosRAT
cf14c5b8ca5ad71f9ca5b37e4784001d9128b161958f6daf5807540eca4ffcc4
RemcosRAT
dfd724316cb0edbf1212cbf5e71f007d22b7a38e7860d96d4d4bedf17eaa85ea
RemcosRAT
+ 3'271 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:pc persistence rat
Link:
https://tria.ge/reports/240105-nbzhfsbcf9/
Behaviour
Enumerates system info in registry
Modifies Internet Explorer settings
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Adds Run key to start application
Checks computer location settings
Drops startup file
Executes dropped EXE
Loads dropped DLL
Remcos
Malware Config
C2 Extraction:
107.175.229.139:8087
Unpacked files
SH256 hash:
45c7b64a55dca23ee1239649e03a7c361813dbcfc2a0817b0d8e94c907d6ed4b
MD5 hash:
fb1bc19121c4e190d83672bc71b493f0
SHA1 hash:
c3488b969ba578e28ee360be24b6416425a224a0
Link:
https://www.unpac.me/results/4975b359-37bd-4d20-8efb-26de8b3db4ed/
SH256 hash:
95dfdb588c7018babd55642c48f6bed1c281cecccbd522dd40b8bea663686f30
MD5 hash:
8d3c6a404a9b6526d082de3e0370e10e
SHA1 hash:
bef3f3c4d9b076a60bdb047f5b8439662691b1d3
Detections:
Remcos
Create hunting rule
win_remcos_w0
Create hunting rule
win_remcos_auto
Create hunting rule
malware_windows_remcos_rat
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
Create hunting rule
Link:
https://www.unpac.me/results/4975b359-37bd-4d20-8efb-26de8b3db4ed/
Parent samples :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 hash:
9d764823822fd68e5771c4ec43886e16db8280bb75a6dffc96fa0c7500a63433
MD5 hash:
44fcfc718962b24a04fe755a36045ddb
SHA1 hash:
5ecb7daf6cc441c5a5f2faf5ba57558cb31771b0
Link:
https://www.unpac.me/results/4975b359-37bd-4d20-8efb-26de8b3db4ed/
SH256 hash:
8a52d87aa80812e9d072f7f197f320f8a7d253ddc1a6070b014cb35189d3fddd
MD5 hash:
cc8376cea9336a97ac76e52ad86dab44
SHA1 hash:
5c6bcce410b28b15be0bbde30dd3589a9902eded
Link:
https://www.unpac.me/results/4975b359-37bd-4d20-8efb-26de8b3db4ed/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/8a52d87aa808/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
iSpy Keylogger
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/8a52d87aa80812e9d072f7f197f320f8a7d253ddc1a6070b014cb35189d3fddd

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:NETexecutableMicrosoft
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

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Cape
Cape
https://www.capesandbox.com/analysis/469581/

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