MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f0dbf849f474eacf2f6b4b2fcb446cde6223accd938ddb8d4550c863c8df74bc. 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 16 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: f0dbf849f474eacf2f6b4b2fcb446cde6223accd938ddb8d4550c863c8df74bc
SHA3-384 hash: 36293b33cdec110d496007539352f41173ca321c8683b08ae126d03ca18f66f33fb40dbfd991201e53005f38d76c3944
SHA1 hash: 9f57d34f7ad2062e888aaebb95cbdc3e2a2d117c
MD5 hash: 20beca4c7d35db4066cdf6fcc42644e2
humanhash: enemy-butter-item-idaho
File name:OST10906202381608790.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:552'960 bytes
First seen:2024-05-28 01:00:14 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'600 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 12288:XMAAV34iMXy6ZRqVVDgntbXiGhOb1fMenAt86zh2deEDPq2+7:cAA9EmVDmhXBh8Mew86IAEzq2S
Threatray 4'138 similar samples on MalwareBazaar
TLSH T186C4029D7B59D4E3C6A898B81093569E8332F2395349D3B777CA40F502CC7D93ACA887
TrID 67.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
9.7% (.EXE) Win64 Executable (generic) (10523/12/4)
6.0% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
4.1% (.EXE) Win32 Executable (generic) (4504/4/1)
File icon (PE):PE icon
dhash icon 64ecccdcc4f8f0d4 (2 x RemcosRAT)
Reporter abuse_ch
Tags:exe RAT RemcosRAT


Avatar
abuse_ch
RemcosRAT C2:
109.248.151.250:6609

Intelligence

File Origin
# of uploads :
1
# of downloads :
601
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
f0dbf849f474eacf2f6b4b2fcb446cde6223accd938ddb8d4550c863c8df74bc.exe
Verdict:
Malicious activity
Analysis date:
2024-05-28 01:02:04 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/23f6ffb1-e767-461a-9210-45c3e2aa0b69

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
96.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=66552cdb121317197511ffd9win7simulatehigh_evasion
Tags:
Encryption Execution Network Stealth Kryptik
Result
Verdict:
Malware
Maliciousness:

Behaviour
Launching a process
Running batch commands
Searching for synchronization primitives
Launching the default Windows debugger (dwwin.exe)
Creating a file in the %temp% subdirectories
Creating a file
Searching for the window
Creating a process from a recently created file
Unauthorized injection to a system process
Enabling autorun by creating a file
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
packed packed smartassembly smart_assembly
Link:
https://www.filescan.io/uploads/66552ccf32eca5b280001c0e/reports/550ea793-9674-4b11-af2b-54144ffd67fc/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/f0dbf849f474eacf2f6b4b2fcb446cde6223accd938ddb8d4550c863c8df74bc
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/b78be441-ba2b-40fd-b78e-83ff4133b929
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
rans.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1448209
Signature
AI detected suspicious sample
Allocates memory in foreign processes
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 register a low level keyboard hook
Contains functionalty to change the wallpaper
Delayed program exit found
Detected Remcos RAT
Found malware configuration
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
Uses schtasks.exe or at.exe to add and modify task schedules
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: 1448209 Sample: OST10906202381608790.exe Startdate: 28/05/2024 Architecture: WINDOWS Score: 100 62 catomaaaaa.freedynamicdns.org 2->62 64 geoplugin.net 2->64 76 Snort IDS alert for network traffic 2->76 78 Multi AV Scanner detection for domain / URL 2->78 80 Found malware configuration 2->80 82 10 other signatures 2->82 8 Phtos.exe 1 2->8         started        11 OST10906202381608790.exe 2 2->11         started        13 Phtos.exe 2->13         started        15 2 other processes 2->15 signatures3 process4 signatures5 84 Antivirus detection for dropped file 8->84 86 Multi AV Scanner detection for dropped file 8->86 88 Machine Learning detection for dropped file 8->88 17 vbc.exe 3 13 8->17         started        29 3 other processes 8->29 90 Writes to foreign memory regions 11->90 92 Allocates memory in foreign processes 11->92 94 Injects a PE file into a foreign processes 11->94 21 vbc.exe 11->21         started        23 cmd.exe 2 11->23         started        31 2 other processes 11->31 25 vbc.exe 13->25         started        34 3 other processes 13->34 27 vbc.exe 15->27         started        36 7 other processes 15->36 process6 dnsIp7 58 catomaaaaa.freedynamicdns.org 109.248.151.250, 49737, 6609 DATACLUBLV Russian Federation 17->58 60 geoplugin.net 178.237.33.50, 49739, 80 ATOM86-ASATOM86NL Netherlands 17->60 66 Detected Remcos RAT 17->66 68 Contains functionalty to change the wallpaper 21->68 70 Contains functionality to register a low level keyboard hook 21->70 72 Delayed program exit found 21->72 38 WerFault.exe 22 16 21->38         started        74 Uses schtasks.exe or at.exe to add and modify task schedules 23->74 40 conhost.exe 23->40         started        50 4 other processes 29->50 56 C:\Users\user\AppData\Local\...\Phtos.exe, PE32 31->56 dropped 42 conhost.exe 31->42         started        44 conhost.exe 31->44         started        46 schtasks.exe 1 31->46         started        48 conhost.exe 34->48         started        52 3 other processes 34->52 54 8 other processes 36->54 file8 signatures9 process10
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/f0dbf849f474eacf2f6b4b2fcb446cde6223accd938ddb8d4550c863c8df74bc
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/f0dbf849f474eacf2f6b4b2fcb446cde6223accd938ddb8d4550c863c8df74bc/
Threat name:
ByteCode-MSIL.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2024-05-28 00:59:51 UTC
File Type:
PE (.Net Exe)
Extracted files:
4
AV detection:
20 of 24 (83.33%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=6dn7qspuotvm6l3ljmx4wrdm3zrchlgnsog5xdkfkdeghsg7os6a._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
0e8dfb4c4b15bffe7df07f0a9240c2287e23c149b465991da96b73eff7b8f903
RemcosRAT
3ae2a8fcc969ec131e6ea2387dbdbdc6dd9ef216fc4a04990a403b7a38494778
RemcosRAT
6619b7126840529091b2da2fa1b7238d6b10bc17bbfc8327aad3683ae686b81d
RemcosRAT
6f31f28d716f4d118974c5fd130a02fb742e20f164ea12b2f1e471f58fa5b817
RemcosRAT
75e017e742b2506cdda2a132759075c7b187ca941df606b34116d0452ef04fd0
RemcosRAT
88c300243b5102cdcf2685203b2469f384d12d0cbd66b49dd479d21b3ceab24d
RemcosRAT
a763b528c73aef993e9e6777b4ecb10d912f08455a86539e4bf96f444eb489e3
RemcosRAT
+ 4'128 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:now rat
Link:
https://tria.ge/reports/240528-bc75rsgf8w/
Behaviour
Creates scheduled task(s)
Suspicious use of WriteProcessMemory
Program crash
Suspicious use of SetThreadContext
Executes dropped EXE
Uses the VBS compiler for execution
Remcos
Malware Config
C2 Extraction:
catomaaaaa.freedynamicdns.org:6609
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/b8b53712-6e7d-4bde-a1cc-3445b48398e2
Unpacked files
SH256 hash:
9b879a87eb111f1834bc4c344e12244ced982cb114df4b4457f85b01c54aac0e
MD5 hash:
c0810dfd4a9e00b22c3b5616e2d8900a
SHA1 hash:
ca93509beaa555aee7d7ff4d4598b29d87643f22
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/717b3272-7726-431c-8e85-7817f147ffcc/
SH256 hash:
f0dbf849f474eacf2f6b4b2fcb446cde6223accd938ddb8d4550c863c8df74bc
MD5 hash:
20beca4c7d35db4066cdf6fcc42644e2
SHA1 hash:
9f57d34f7ad2062e888aaebb95cbdc3e2a2d117c
Detections:
INDICATOR_EXE_Packed_SmartAssembly
Create hunting rule
Link:
https://www.unpac.me/results/717b3272-7726-431c-8e85-7817f147ffcc/
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/f0dbf849f474eacf2f6b4b2fcb446cde6223accd938ddb8d4550c863c8df74bc

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_EXE_Packed_SmartAssembly
Create hunting rule
Author:ditekSHen
Description:Detects executables packed with SmartAssembly
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:NET
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:Remcos
Create hunting rule
Author:kevoreilly
Description:Remcos Payload
Rule name:REMCOS_RAT_variants
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
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
Reference:https://www.elastic.co/security-labs/exploring-the-ref2731-intrusion-set
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_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.

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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