MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a3ee09ce29be074b29f2ea1a0eb126bc907c93aed40b880f00eb0b8ee59b8d2c. 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: 14


Intelligence 14 IOCs YARA 10 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a3ee09ce29be074b29f2ea1a0eb126bc907c93aed40b880f00eb0b8ee59b8d2c
SHA3-384 hash: d2c39d5e53611aaf6cab939bdd65346fde7cc3587dca78735901cac25ffc37bd51414ca8ccb99d9023c27b73595501ba
SHA1 hash: e654933ee6c95d1ad8007dd8b387a175d2f76de5
MD5 hash: 63dcf4f0b07d3318e1cc2c86faccc612
humanhash: fruit-autumn-michigan-pluto
File name:OSSSSS.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'071'616 bytes
First seen:2023-01-11 09:10:19 UTC
Last seen:2023-01-11 10:35:48 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 24576:sNumoo59dsvA0bmL48JX4Fu/gxku2UcAWrlYTya:iVooDdGEfGuIxx2RAeYTy
TLSH T17435E0621964C5DFDF82913A197ED29E1CECEED32161B78A55303C4D9FBB30B68601B2
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10523/12/4)
6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.3% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
File icon (PE):PE icon
dhash icon 0e0c052525162b2d (22 x Formbook, 22 x RemcosRAT, 17 x AgentTesla)
Reporter abuse_ch
Tags:exe RAT RemcosRAT


Avatar
abuse_ch
RemcosRAT C2:
217.64.127.195:52651

Intelligence

File Origin
# of uploads :
2
# of downloads :
209
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
OSSSSS.exe
Verdict:
Malicious activity
Analysis date:
2023-01-11 09:11:57 UTC
Tags:
rat remcos trojan
Link:
https://app.any.run/tasks/22df0bf3-2300-425c-9709-887fe31aacaf

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
zgRAT
Create hunting rule
Link:
https://www.capesandbox.com/analysis/351871/
Detection(s):
SecuriteInfo.com.Win32.DropperX-gen.2889.16597.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
Launching a process
Creating a process with a hidden window
Creating a file in the %AppData% subdirectories
Unauthorized injection to a recently created process
Creating a file
Sending a custom TCP request
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Verdict:
No Threat
Threat level:
  2/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/63be7d27dde391056ac1df55/reports/814a70be-c7cf-4527-8f68-5e54a372236c/overview
Malware family:
REMCOS
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/c996f929-604a-40a9-88e3-9c53f85a1e91
Result
Threat name:
Remcos, zgRAT
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1149472
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Detected Remcos RAT
Encrypted powershell cmdline option found
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Remcos
Snort IDS alert for network traffic
Yara detected Costura Assembly Loader
Yara detected Remcos RAT
Yara detected zgRAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 782204 Sample: OSSSSS.exe Startdate: 11/01/2023 Architecture: WINDOWS Score: 100 42 Snort IDS alert for network traffic 2->42 44 Multi AV Scanner detection for domain / URL 2->44 46 Malicious sample detected (through community Yara rule) 2->46 48 11 other signatures 2->48 7 OSSSSS.exe 1 7 2->7         started        11 Jdmcfworvo.exe 4 2->11         started        13 Jdmcfworvo.exe 3 2->13         started        process3 file4 34 C:\Users\user\AppData\...\Jdmcfworvo.exe, PE32 7->34 dropped 36 C:\Users\...\Jdmcfworvo.exe:Zone.Identifier, ASCII 7->36 dropped 38 C:\Users\user\AppData\...\OSSSSS.exe.log, ASCII 7->38 dropped 50 Encrypted powershell cmdline option found 7->50 52 Injects a PE file into a foreign processes 7->52 15 OSSSSS.exe 2 7->15         started        18 powershell.exe 15 7->18         started        54 Multi AV Scanner detection for dropped file 11->54 56 Machine Learning detection for dropped file 11->56 20 powershell.exe 15 11->20         started        22 Jdmcfworvo.exe 11->22         started        24 powershell.exe 13->24         started        26 Jdmcfworvo.exe 13->26         started        signatures5 process6 dnsIp7 40 217.64.127.195, 49699, 52651 M247GB United Kingdom 15->40 28 conhost.exe 18->28         started        30 conhost.exe 20->30         started        32 conhost.exe 24->32         started        process8
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a3ee09ce29be074b29f2ea1a0eb126bc907c93aed40b880f00eb0b8ee59b8d2c/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2023-01-11 06:38:15 UTC
File Type:
PE (.Net Exe)
Extracted files:
4
AV detection:
22 of 26 (84.62%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=upxattrjxyduwkps5ina5mjgxsihze5o2qfyqdya5mfy5zm3ruwa._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:ossy persistence rat
Link:
https://tria.ge/reports/230111-k5llxabf75/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Adds Run key to start application
Checks computer location settings
Remcos
Malware Config
C2 Extraction:
217.64.127.195:52651
127.0.0.1:52651
10.5.247.128:52651
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/18413be2-387a-4d1f-b276-c778aae58d6b
Unpacked files
SH256 hash:
a3ee09ce29be074b29f2ea1a0eb126bc907c93aed40b880f00eb0b8ee59b8d2c
MD5 hash:
63dcf4f0b07d3318e1cc2c86faccc612
SHA1 hash:
e654933ee6c95d1ad8007dd8b387a175d2f76de5
Link:
https://www.unpac.me/results/c40b2b5c-1df8-4554-bc57-5ea3df94ea6c/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/a3ee09ce29be/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.38
Link:
https://yomi.yoroi.company/submissions/a3ee09ce29be074b29f2ea1a0eb126bc907c93aed40b880f00eb0b8ee59b8d2c

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:ach_RemcosRAT
Create hunting rule
Author:abuse.ch
Rule name:INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
Create hunting rule
Author:ditekSHen
Description:detects Windows exceutables potentially bypassing UAC using eventvwr.exe
Rule name:pe_imphash
Create hunting rule
Rule name:Remcos
Create hunting rule
Author:kevoreilly
Description:Remcos Payload
Rule name:remcos_rat
Create hunting rule
Author:jeFF0Falltrades
Rule name:REMCOS_RAT_variants
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
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.

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/351871/

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