MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 dc99dacdbd53fe4163b9e32e7ef490b354d8c0c81089614ceae1ecada11263bd. 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 23 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: dc99dacdbd53fe4163b9e32e7ef490b354d8c0c81089614ceae1ecada11263bd
SHA3-384 hash: 01637099d14202a8054a58fb3633cce033009beb8b5b9e459956771b32d466bf84175bd80331276c5ba66a99cbd75c50
SHA1 hash: 21f3a5df13468d304d2dd2591e546eb17f6ac680
MD5 hash: 65234c47f590f09aecca2aca58ff169c
humanhash: alaska-sad-december-coffee
File name:65234c47f590f09aecca2aca58ff169c.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'049'088 bytes
First seen:2023-08-09 16:46:58 UTC
Last seen:2023-08-25 17:24:43 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash bdf6349f4337edc78aae879092566618 (1 x RemcosRAT, 1 x Formbook, 1 x ModiLoader)
ssdeep 12288:q+V0OGY20hP4SpWD4XIiIlYqHrvd6FE3TNDJrYb0fZp0B0Yi7fLssVcgbbFWWRpX:qWAs6lD4XNVQrvd/DFR20fI0JzR/R4A
Threatray 2'424 similar samples on MalwareBazaar
TLSH T1FB25BF76EA925C37E17314789C0A5A547C2C7FB30638A446BBE43E95AF3D290363C366
TrID 49.2% (.EXE) Win32 EXE PECompact compressed (generic) (41569/9/9)
15.5% (.SCR) Windows screen saver (13097/50/3)
12.4% (.EXE) Win64 Executable (generic) (10523/12/4)
7.7% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
5.3% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon e4e084849496d09c (1 x RemcosRAT, 1 x Formbook, 1 x ModiLoader)
Reporter abuse_ch
Tags:exe RAT RemcosRAT

Intelligence

File Origin
# of uploads :
3
# of downloads :
284
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
65234c47f590f09aecca2aca58ff169c.exe
Verdict:
Malicious activity
Analysis date:
2023-08-09 16:57:46 UTC
Tags:
dbatloader loader rat remcos remote keylogger
Link:
https://app.any.run/tasks/bb5dcea1-81aa-4ef7-801b-6905fb9caeb6

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
ModiLoader
Create hunting rule
Link:
https://www.capesandbox.com/analysis/441692/
Detection(s):
SecuriteInfo.com.Generic-EXE.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Creating a window
Sending a custom TCP request
DNS request
Sending an HTTP GET request
Creating a file
Running batch commands
Creating a process with a hidden window
Launching a process
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a system process
Result
Malware family:
n/a
Score:
  6/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/102320/overview
Behaviour
MalwareBazaar
CheckScreenResolution
CheckCmdLine
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
control keylogger lolbin obfuscated
Link:
https://www.filescan.io/uploads/64d3c307ab41059bd4c98b93/reports/88da78d3-461b-4f68-b426-5fcdd0d80a2b/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/dc99dacdbd53fe4163b9e32e7ef490b354d8c0c81089614ceae1ecada11263bd
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:
Dbatloader
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/a5f1f1e0-8609-4612-97b2-211cebd30b02
Result
Threat name:
Remcos, DBatLoader
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1288761
Signature
Adds a directory exclusion to Windows Defender
Allocates memory in foreign processes
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
DLL side loading technique detected
Drops executables to the windows directory (C:\Windows) and starts them
Drops PE files with a suspicious file extension
Early bird code injection technique detected
Found malware configuration
Injects a PE file into a foreign processes
Installs a global keyboard hook
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
Queues an APC in another process (thread injection)
Sigma detected: Remcos
Uses ping.exe to check the status of other devices and networks
Uses ping.exe to sleep
Writes to foreign memory regions
Yara detected DBatLoader
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1288761 Sample: QAXRLxMajB.exe Startdate: 09/08/2023 Architecture: WINDOWS Score: 100 78 Multi AV Scanner detection for domain / URL 2->78 80 Found malware configuration 2->80 82 Malicious sample detected (through community Yara rule) 2->82 84 8 other signatures 2->84 11 QAXRLxMajB.exe 1 7 2->11         started        16 Fnkukgpy.PIF 2->16         started        18 Fnkukgpy.PIF 2->18         started        process3 dnsIp4 74 sszteell.com 141.98.10.71, 49700, 49703, 49704 HOSTBALTICLT Lithuania 11->74 60 C:\Users\Public\Libraries\netutils.dll, PE32+ 11->60 dropped 62 C:\Users\Public\Libraries\easinvoker.exe, PE32+ 11->62 dropped 64 C:\Users\Public\Libraries\Fnkukgpy.PIF, PE32 11->64 dropped 98 Early bird code injection technique detected 11->98 100 Drops PE files with a suspicious file extension 11->100 102 Writes to foreign memory regions 11->102 104 Queues an APC in another process (thread injection) 11->104 20 cmd.exe 1 11->20         started        23 colorcpl.exe 3 16 11->23         started        106 Multi AV Scanner detection for dropped file 16->106 108 Allocates memory in foreign processes 16->108 110 Injects a PE file into a foreign processes 16->110 27 colorcpl.exe 16->27         started        29 SndVol.exe 18->29         started        file5 signatures6 process7 dnsIp8 86 Uses ping.exe to sleep 20->86 88 Drops executables to the windows directory (C:\Windows) and starts them 20->88 90 Uses ping.exe to check the status of other devices and networks 20->90 31 easinvoker.exe 20->31         started        33 PING.EXE 1 20->33         started        36 xcopy.exe 2 20->36         started        39 8 other processes 20->39 70 tornado.ydns.eu 85.209.134.253, 1972, 49701 CMCSUS Germany 23->70 72 geoplugin.net 178.237.33.50, 49702, 80 ATOM86-ASATOM86NL Netherlands 23->72 58 C:\ProgramData\remcos\logs.dat, data 23->58 dropped 92 Installs a global keyboard hook 23->92 file9 signatures10 process11 dnsIp12 41 cmd.exe 1 31->41         started        66 127.0.0.1 unknown unknown 33->66 68 192.168.2.1 unknown unknown 33->68 54 C:\Windows \System32\easinvoker.exe, PE32+ 36->54 dropped 56 C:\Windows \System32\netutils.dll, PE32+ 39->56 dropped file13 process14 signatures15 94 Adds a directory exclusion to Windows Defender 41->94 44 cmd.exe 1 41->44         started        47 conhost.exe 41->47         started        process16 signatures17 96 Adds a directory exclusion to Windows Defender 44->96 49 powershell.exe 23 44->49         started        process18 signatures19 76 DLL side loading technique detected 49->76 52 conhost.exe 49->52         started        process20
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/dc99dacdbd53fe4163b9e32e7ef490b354d8c0c81089614ceae1ecada11263bd/
Threat name:
Win32.Trojan.Generic
Create hunting rule
Status:
Malicious
First seen:
2023-08-09 05:38:16 UTC
File Type:
PE (Exe)
Extracted files:
26
AV detection:
15 of 38 (39.47%)
Threat level:
  2/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=3sm5vtn5kp7ecy5z4mxh55eqwnknrqgiccewcthk4hwk3iismo6q._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
2f1ca9ea9c439cddf83672896fe9810ce3d3aa2218f3718f121e90a19e3a25e6
RemcosRAT
55b379ec8cd752f104605bdbd88048c1c3b49c328b393ba496494a118ef5ae16
RemcosRAT
7d537e6551b2b3274942aa184949fda010e0c2a1a5ce9b8a3924f34b6e79ad9e
RemcosRAT
9474ca0fa771bd4dd2202e312ada0090f6890635b9039b5be855cc7cb8eab6ee
RemcosRAT
98a4d17d6dee54f9242c704af627da853d978d6d37738f875d08ea0e7eaca373
RemcosRAT
df906c77d802e4e977ff24b11e1840d6948338250023a27b2b30ad9ac6e3f4ba
RemcosRAT
f60667b9e2a0a25221cdb47844149beb3b1cd08abbc3360e8684fad9d8aaa20e
RemcosRAT
f82c643baf10986a8ad197d2565b7a093aa1eef8b9d4463f4a42d3cc81a45b8f
RemcosRAT
+ 2'414 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:modiloader family:remcos botnet:willing persistence rat trojan
Link:
https://tria.ge/reports/230809-vah8eafa2t/
Behaviour
Runs ping.exe
Script User-Agent
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Adds Run key to start application
Executes dropped EXE
Loads dropped DLL
ModiLoader Second Stage
ModiLoader, DBatLoader
Remcos
Malware Config
C2 Extraction:
tornado.ydns.eu:1972
orifak.ydns.eu:1972
Unpacked files
SH256 hash:
570d50b649829cd3e6f62c02ef89e69c0886e9f1664cceb5ac57977fa23f4eb8
MD5 hash:
85b7b59e9888d3885a1068cb2e0350ed
SHA1 hash:
e550b26fd606cfad460ebd774e42541c57e22851
Detections:
win_dbatloader_g1
Create hunting rule
Link:
https://www.unpac.me/results/b747c0d7-c458-4b3d-90ed-7c9c987081c2/
Parent samples :
dc99dacdbd53fe4163b9e32e7ef490b354d8c0c81089614ceae1ecada11263bd
3e8bbd563bf539b08acb62ff89b43353549e9d0aee0a32567eb42d7f0687e51c
3dec0f077df087f3e1c0e2f49194c0362bf56c3fb3ba18fa60b499495e729f48
SH256 hash:
7bcdc2e607abc65ef93afd009c3048970d9e8d1c2a18fc571562396b13ebb301
MD5 hash:
c116d3604ceafe7057d77ff27552c215
SHA1 hash:
452b14432fb5758b46f2897aeccd89f7c82a727d
Link:
https://www.unpac.me/results/b747c0d7-c458-4b3d-90ed-7c9c987081c2/
SH256 hash:
dc99dacdbd53fe4163b9e32e7ef490b354d8c0c81089614ceae1ecada11263bd
MD5 hash:
65234c47f590f09aecca2aca58ff169c
SHA1 hash:
21f3a5df13468d304d2dd2591e546eb17f6ac680
Detections:
DbatLoaderStage1
Create hunting rule
Link:
https://www.unpac.me/results/b747c0d7-c458-4b3d-90ed-7c9c987081c2/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/dc99dacdbd53/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Remcos
Score:
0.90
Link:
https://yomi.yoroi.company/submissions/dc99dacdbd53fe4163b9e32e7ef490b354d8c0c81089614ceae1ecada11263bd

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:BitcoinAddress
Create hunting rule
Author:Didier Stevens (@DidierStevens)
Description:Contains a valid Bitcoin address
Rule name:BobSoftMiniDelphiBoBBobSoft
Create hunting rule
Author:malware-lu
Rule name:Borland
Create hunting rule
Author:malware-lu
Rule name:CMD_Ping_Localhost
Create hunting rule
Rule name:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerException__SetConsoleCtrl
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:Disable_Defender
Create hunting rule
Author:iam-py-test
Description:Detect files disabling or modifying Windows Defender, Windows Firewall, or Microsoft Smartscreen
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:maldoc_getEIP_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:MALWARE_Win_ModiLoader
Create hunting rule
Author:ditekSHen
Description:Detects ModiLoader
Rule name:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
Rule name:Remcos
Create hunting rule
Author:kevoreilly
Description:Remcos Payload
Rule name:REMCOS_RAT_variants
Create hunting rule
Rule name:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns
Rule name:ThreadControl__Context
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:Typical_Malware_String_Transforms
Create hunting rule
Author:Florian Roth (Nextron Systems)
Description:Detects typical strings in a reversed or otherwise modified form
Reference:Internal Research
Rule name:Typical_Malware_String_Transforms_RID3473
Create hunting rule
Author:Florian Roth
Description:Detects typical strings in a reversed or otherwise modified form
Reference:Internal Research
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:without_attachments
Create hunting rule
Author:Antonio Sanchez <asanchez@hispasec.com>
Description:Rule to detect the no presence of any attachment
Reference:http://laboratorio.blogs.hispasec.com/
Rule name:without_urls
Create hunting rule
Author:Antonio Sanchez <asanchez@hispasec.com>
Description:Rule to detect the no presence of any url
Reference:http://laboratorio.blogs.hispasec.com/

File information

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

Web download

RemcosRAT

Executable exe dc99dacdbd53fe4163b9e32e7ef490b354d8c0c81089614ceae1ecada11263bd

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/2702771/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/441692/

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