MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c5898ac379acfcd23bedfceff198bf5e738921bf61b299ca47bdd8c223199515. 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: 17


Intelligence 17 IOCs YARA 21 File information Comments
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SHA256 hash: c5898ac379acfcd23bedfceff198bf5e738921bf61b299ca47bdd8c223199515
SHA3-384 hash: f6ceb96d51fac5afc8ecb42eeaf5786a7524d5febc8b22604fbbe447415b71dfb61aa4c5b47edf5badb53c3c59b916fe
SHA1 hash: 4f4e60f34f6666a6c206799fe0569da9c2d7c6ba
MD5 hash: f79f0729f9a01a260c3d810a05a46d95
humanhash: zebra-fourteen-two-harry
File name:audio.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:511'488 bytes
First seen:2023-10-20 01:34:48 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 8d5087ff5de35c3fbb9f212b47d63cad (170 x RemcosRAT)
ssdeep 6144:k/7iPrcL3ArwhBq7Kjsn9iHGXg0lwGS9MNNhdFvPxps9gsAOZZuAXec7E97ov:k/uPq3AfK496Gw0lwGXN3pvs/ZuF98v
Threatray 2'695 similar samples on MalwareBazaar
TLSH T106B47B05E593CA72C5AF10320C25FF1ED97AAC122C2147BB7BF63ED5BA320806625767
TrID 32.2% (.EXE) Win64 Executable (generic) (10523/12/4)
20.1% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
15.4% (.EXE) Win16 NE executable (generic) (5038/12/1)
13.7% (.EXE) Win32 Executable (generic) (4505/5/1)
6.2% (.EXE) OS/2 Executable (generic) (2029/13)
File icon (PE):PE icon
dhash icon 4db292f2d88cb40b (15 x RemcosRAT, 13 x AgentTesla, 7 x NanoCore)
Reporter JAMESWT_WT
Tags:exe RemcosRAT spm23-casacam-net studioaziende-click

Intelligence

File Origin
# of uploads :
1
# of downloads :
368
Origin country :
IT IT
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
audio.exe
Verdict:
Malicious activity
Analysis date:
2023-10-20 01:36:08 UTC
Tags:
rat remcos remote keylogger
Link:
https://app.any.run/tasks/db54e01d-8167-4b8f-8687-bc32de366712

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
Win.Trojan.Remcos-9841897-0
Create hunting rule

Win.Trojan.Remcos-10002580-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Сreating synchronization primitives
Creating a file
Enabling the 'hidden' option for recently created files
Creating a process from a recently created file
Setting a keyboard event handler
Launching a process
DNS request
Sending a custom TCP request
Sending an HTTP GET request
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Enabling autorun
Unauthorized injection to a system process
Gathering data
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
control evasive exploit explorer fingerprint greyware keylogger lolbin remcos shell32
Link:
https://www.filescan.io/uploads/6531d947afc17c7912f963fb/reports/e305eb00-d67f-4739-a825-976b2729f6c1/overview
Verdict:
Malicious
Labled as:
Backdoor.Remcos
Link:
https://www.hybrid-analysis.com/sample/c5898ac379acfcd23bedfceff198bf5e738921bf61b299ca47bdd8c223199515
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/f036e840-f86e-4d18-b0b0-21ff7c86aaeb
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
rans.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1329076
Signature
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 bypass UAC (CMSTPLUA)
Contains functionality to inject code into remote processes
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 an undocumented autostart registry key
Creates autostart registry keys with suspicious names
Delayed program exit found
Deletes itself after installation
Found evasive API chain (may stop execution after checking mutex)
Found malware configuration
Found stalling execution ending in API Sleep call
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 dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Remcos
Writes to foreign memory regions
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1329076 Sample: audio.exe Startdate: 20/10/2023 Architecture: WINDOWS Score: 100 34 spm23.casacam.net 2->34 36 geoplugin.net 2->36 42 Found malware configuration 2->42 44 Malicious sample detected (through community Yara rule) 2->44 46 Antivirus detection for URL or domain 2->46 48 15 other signatures 2->48 9 audio.exe 4 4 2->9         started        13 revenge.exe 2->13         started        15 revenge.exe 2->15         started        17 revenge.exe 2->17         started        signatures3 process4 file5 32 C:\ProgramData\Remcos\revenge.exe, PE32 9->32 dropped 66 Contains functionality to bypass UAC (CMSTPLUA) 9->66 68 Creates an undocumented autostart registry key 9->68 70 Contains functionalty to change the wallpaper 9->70 72 6 other signatures 9->72 19 revenge.exe 2 1 9->19         started        signatures6 process7 signatures8 50 Antivirus detection for dropped file 19->50 52 Multi AV Scanner detection for dropped file 19->52 54 Contains functionality to bypass UAC (CMSTPLUA) 19->54 56 8 other signatures 19->56 22 iexplore.exe 3 15 19->22         started        process9 dnsIp10 38 spm23.casacam.net 45.90.222.54, 2404, 49746 MAJESTIC-HOSTING-01US Germany 22->38 40 geoplugin.net 178.237.33.50, 49747, 49748, 80 ATOM86-ASATOM86NL Netherlands 22->40 30 C:\ProgramData\Remcos\logs.dat, data 22->30 dropped 58 Deletes itself after installation 22->58 60 Writes to foreign memory regions 22->60 62 Maps a DLL or memory area into another process 22->62 64 Installs a global keyboard hook 22->64 27 svchost.exe 22->27         started        file11 signatures12 process13 signatures14 74 Contains functionality to bypass UAC (CMSTPLUA) 27->74 76 Found evasive API chain (may stop execution after checking mutex) 27->76 78 Contains functionalty to change the wallpaper 27->78 80 4 other signatures 27->80
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/c5898ac379acfcd23bedfceff198bf5e738921bf61b299ca47bdd8c223199515
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/c5898ac379acfcd23bedfceff198bf5e738921bf61b299ca47bdd8c223199515/
Threat name:
Win32.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2023-09-22 11:47:00 UTC
File Type:
PE (Exe)
Extracted files:
10
AV detection:
32 of 38 (84.21%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=yweyvq3zvt6neo7n7tx7dgf7lzzysin7mgzjtsshxxmmeiyzsukq._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
280945c850b2ee81256b36dacdec35b2bbc147c3cba57b344cd50bf464d74f97
RemcosRAT
3cb93d166196c1400e069fd437153d956df26d587c969c2c1a525874633a1e99
RemcosRAT
3da90b636e39cd1f67e3542c60d813c6ff8152f7f740b3ef4ef086ef120836df
RemcosRAT
4b66b1c337c83ccb79e4862a7a32421fd75a565a59fee1f830d4aae55b64af9a
RemcosRAT
69cb61375bae8db7278ca4adee488faea6723d8052270908010541c4850e8dcb
RemcosRAT
979b67124f30f347688897010f34abf0467a67516ba011c9601cf06a14be0432
RemcosRAT
a54c57d081e28c09d26a5ef8d3b471af22e6b4ab2f65b1a89bb2a79c23872135
RemcosRAT
f1373d2222e6c4e03e857f401e582261f0530520e8fe2d6a325743ef73ee9a26
RemcosRAT
+ 2'685 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:remotehost persistence rat
Link:
https://tria.ge/reports/231020-bzpa6sdc3t/
Behaviour
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
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
Deletes itself
Executes dropped EXE
Loads dropped DLL
Adds policy Run key to start application
Remcos
Malware Config
C2 Extraction:
spm23.casacam.net:2404
Unpacked files
SH256 hash:
c5898ac379acfcd23bedfceff198bf5e738921bf61b299ca47bdd8c223199515
MD5 hash:
f79f0729f9a01a260c3d810a05a46d95
SHA1 hash:
4f4e60f34f6666a6c206799fe0569da9c2d7c6ba
Detections:
Remcos
Create hunting rule
win_remcos_w0
Create hunting rule
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/f4593920-6c8e-41ed-bb28-d69b325d63ee/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/c5898ac379ac/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:DebuggerCheck__QueryInfo
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
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_CMSTPCOM
Create hunting rule
Author:ditekSHen
Description:Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003)
Rule name:maldoc_find_kernel32_base_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:Remcos
Create hunting rule
Author:kevoreilly
Description:Remcos Payload
Rule name:REMCOS_RAT_variants
Create hunting rule
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
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.

Comments