MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4875f3562c4af57ea7bd8f6eecfc297784d9307cd7190a6aa44a0dffc21258c9. 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: 11


Intelligence 11 IOCs YARA 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4875f3562c4af57ea7bd8f6eecfc297784d9307cd7190a6aa44a0dffc21258c9
SHA3-384 hash: 7d6fbe285d6b5cd7d840d1eed4a8eca18c40b2451606111741d0a50d37f1a0ac736cb1d5131330e310eb6717c66a1980
SHA1 hash: 6f4922205d5d728b575154a2d204e11d088469c4
MD5 hash: 3916b41e0f0ca2e7c95cbd65c8fcec40
humanhash: lake-quebec-salami-high
File name:Acuerdo De Pago_06518264_30520666_180137320834349822_88487980_59169322413572003_37083945946317_pdf.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:222'104 bytes
First seen:2020-10-15 11:12:35 UTC
Last seen:2020-10-15 12:16:07 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 3072:Ls7nnQnUCeP9IFaoMn35fBpBlhRbfRf2binnnznG7RrqcZLpDiTot4hSqYKHPO:IknSP35fNDeenzngnZliTot4hSqY8O
Threatray 835 similar samples on MalwareBazaar
TLSH 8124CF8AA2BF6C11CD38133DFBF10116CBB95596930ACABDACF845C0D48E6511FED94A
Reporter abuse_ch
Tags:exe Outlook RAT RemcosRAT


Avatar
abuse_ch
Malspam distributing RemcosRAT:

HELO: NAM11-BN8-obe.outbound.protection.outlook.com
Sending IP: 40.92.20.38
From: empresa girardot <surtirgirardot@hotmail.com>
Subject: ACUERDO DE PAGO.
Attachment: Acuerdo De Pago_06518264_30520666_180137320834349822_88487980_59169322413572003_37083945946317.tgz (contains "Acuerdo De Pago_06518264_30520666_180137320834349822_88487980_59169322413572003_37083945946317_pdf.exe")

Intelligence

File Origin
# of uploads :
2
# of downloads :
79
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Remcos
Create hunting rule
Link:
https://www.capesandbox.com/analysis/71273/
Detection(s):
SecuriteInfo.com.Artemis3916B41E0F0C.9910.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Launching a process
Creating a process with a hidden window
Sending a UDP request
Adding an access-denied ACE
Creating a file in the %AppData% subdirectories
Enabling the 'hidden' option for recently created files
Creating a file in the %temp% directory
Launching the default Windows debugger (dwwin.exe)
Creating a process from a recently created file
Creating a window
Deleting a recently created file
Running batch commands
Creating a file
DNS request
Connection attempt
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
Setting a global event handler for the keyboard
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/492166
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Contains functionality to capture and log keystrokes
Contains functionality to hide a thread from the debugger
Contains functionality to inject code into remote processes
Contains functionality to steal Chrome passwords or cookies
Contains functionality to steal Firefox passwords or cookies
Country aware sample found (crashes after keyboard check)
Detected Remcos RAT
Hides threads from debuggers
Initial sample is a PE file and has a suspicious name
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 dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Remcos
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 298532 Sample: 6317_pdf.exe Startdate: 15/10/2020 Architecture: WINDOWS Score: 100 65 databasepropersonombrecomercialideasearchwords.services 2->65 71 Malicious sample detected (through community Yara rule) 2->71 73 Antivirus / Scanner detection for submitted sample 2->73 75 Multi AV Scanner detection for submitted file 2->75 77 6 other signatures 2->77 12 6317_pdf.exe 2->12         started        15 PxoServicesNet.exe.exe 2->15         started        17 PxoServicesNet.exe.exe 2->17         started        signatures3 process4 signatures5 79 Contains functionality to steal Chrome passwords or cookies 12->79 81 Contains functionality to capture and log keystrokes 12->81 83 Contains functionality to inject code into remote processes 12->83 89 2 other signatures 12->89 19 6317_pdf.exe 4 5 12->19         started        22 WerFault.exe 23 9 12->22         started        24 timeout.exe 1 12->24         started        32 2 other processes 12->32 85 Hides threads from debuggers 15->85 87 Injects a PE file into a foreign processes 15->87 26 timeout.exe 15->26         started        28 PxoServicesNet.exe.exe 15->28         started        30 timeout.exe 17->30         started        process6 file7 59 C:\Users\user\...\PxoServicesNet.exe.exe, PE32 19->59 dropped 61 C:\...\PxoServicesNet.exe.exe:Zone.Identifier, ASCII 19->61 dropped 34 wscript.exe 1 19->34         started        63 C:\ProgramData\Microsoft\...\Report.wer, Little-endian 22->63 dropped 37 conhost.exe 24->37         started        39 conhost.exe 26->39         started        41 conhost.exe 30->41         started        process8 dnsIp9 67 192.168.2.1 unknown unknown 34->67 43 cmd.exe 1 34->43         started        process10 process11 45 PxoServicesNet.exe.exe 43->45         started        48 conhost.exe 43->48         started        signatures12 91 Antivirus detection for dropped file 45->91 93 Multi AV Scanner detection for dropped file 45->93 95 Machine Learning detection for dropped file 45->95 97 2 other signatures 45->97 50 PxoServicesNet.exe.exe 45->50         started        53 timeout.exe 1 45->53         started        55 WerFault.exe 45->55         started        process13 dnsIp14 69 databasepropersonombrecomercialideasearchwords.services 186.169.81.214, 49731, 49732, 49733 COLOMBIATELECOMUNICACIONESSAESPCO Colombia 50->69 57 conhost.exe 53->57         started        process15
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/4875f3562c4af57ea7bd8f6eecfc297784d9307cd7190a6aa44a0dffc21258c9/
Threat name:
ByteCode-MSIL.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2020-10-15 01:40:23 UTC
AV detection:
24 of 29 (82.76%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=jb27gvrmjl2x5j55r5xoz7bjo6cnsmd424mqu2vejig77qqsldeq._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
26cfb1b24425c97fc4588631b23ca93def5d84efb2300d81bdbbb48443207292
RemcosRAT
485c1301f4bc84bc2d274f53222cf7ca5fbd8af8728d1aaa977a6574f577fb87
RemcosRAT
736bd7b09aa1e987edac64868cc8e5db0d86e709652e0588e2023d052f3def8f
RemcosRAT
7720da8dd623a00812870efdb75c2f2571417599ebfabcff48d2bd95cd029ea2
RemcosRAT
83eb442b175e4fe5a2fde6e8d72618eee280398f89a81da1f9c118d2c46032d4
RemcosRAT
a1c561c21720c4f1c3626276db6afc2c12b1aae9304c78518763eb78454f84b8
RemcosRAT
c86bcfe4e22cb50054b44e38fc4fb79624c4ed5bf9a26174754dbb5c1a6baff8
RemcosRAT
deeeb57609c406b43e7e77a38726a357ab063d110c06e4f1c56eb491c20659ce
RemcosRAT
e39c2e98071d4440d02e6d1aa86111536d6d01554489bd71f890455c05e424d3
RemcosRAT
eb1230ab4a5408a3d264bb51f1ff311fcf52aa97d52b801738cd5add365e77d2
RemcosRAT
+ 825 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
persistence rat family:remcos
Link:
https://tria.ge/reports/201015-qcvrg64ez2/
Behaviour
Delays execution with timeout.exe
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Modifies registry class
Suspicious behavior: GetForegroundWindowSpam
Program crash
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Adds Run key to start application
Loads dropped DLL
Executes dropped EXE
ServiceHost packer
Remcos
Malware Config
C2 Extraction:
databasepropersonombrecomercialideasearchwords.services:7580
Unpacked files
SH256 hash:
4875f3562c4af57ea7bd8f6eecfc297784d9307cd7190a6aa44a0dffc21258c9
MD5 hash:
3916b41e0f0ca2e7c95cbd65c8fcec40
SHA1 hash:
6f4922205d5d728b575154a2d204e11d088469c4
Link:
https://www.unpac.me/results/a46ce68a-7f3a-47ca-9b94-07126968427b/
SH256 hash:
7d42d84775340aedb1d768dd32c12b52fdf8c840e85e95cc690d54a1bb3a772b
MD5 hash:
6a293e104d5947a663bfdbd87b9be732
SHA1 hash:
0eb9edef833f1013f689ec62dce4eafcb86722f5
Link:
https://www.unpac.me/results/a46ce68a-7f3a-47ca-9b94-07126968427b/
SH256 hash:
2dec41541542078a4c66f5b138c3a459880e93d11e72130340ebca9b83c3aa5b
MD5 hash:
770bd1dfd20222fbca51032be2149573
SHA1 hash:
523f62e43cfc71f6bcfdeaf3ac26c7164bf1d6f1
Detections:
win_remcos_g0
Create hunting rule
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/a46ce68a-7f3a-47ca-9b94-07126968427b/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Backdoor
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/4875f3562c4af57ea7bd8f6eecfc297784d9307cd7190a6aa44a0dffc21258c9

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:Chrome_stealer_bin_mem
Create hunting rule
Author:James_inthe_box
Description:Chrome in files like avemaria
Rule name:Keylog_bin_mem
Create hunting rule
Author:James_inthe_box
Description:Contains Keylog
Rule name:Parallax
Create hunting rule
Author:@bartblaze
Description:Identifies Parallax RAT.
Rule name:Remcos
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Remcos in memory
Rule name:win_remcos_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:autogenerated rule brought to you by yara-signator

File information

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

Malspam

RemcosRAT

rar 93cf5fb9e906bd846e9920eb5f658802e02262f1fc3d98ddddf19a04fa006a45

RemcosRAT

Executable exe 4875f3562c4af57ea7bd8f6eecfc297784d9307cd7190a6aa44a0dffc21258c9

(this sample)

  
Dropped by
MD5 103314537b06a0c3b346484dd1648d34
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/71273/
  
Dropped by
SHA256 93cf5fb9e906bd846e9920eb5f658802e02262f1fc3d98ddddf19a04fa006a45

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