MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4dd39cd7e19df27e79b7aecf317eb2ff409a3d15c2abd470a055e11c3aeefb6d. 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 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4dd39cd7e19df27e79b7aecf317eb2ff409a3d15c2abd470a055e11c3aeefb6d
SHA3-384 hash: 3d8619a4f4ee40fe8737c2c70701a77c8940fbe505de1eabdc9cbcad2a45ce9ca65a2a591a9b1941642e73fc12f3e28f
SHA1 hash: 2e74b484a20f039731617612da2a1db3bbb1aa2b
MD5 hash: 92bb76cb7c432d244b9ae55875a8a72b
humanhash: charlie-pasta-enemy-florida
File name:PO160.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:999'936 bytes
First seen:2023-09-25 08:12:35 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:HdmwUG2iNt+FfsPFnntHDoo3qlzZOQFBm+Usb6d2RZqJh7kTrWVLUuOF8BV05FQa:MwUG1SF2nnCLfm+UpGEboWVLhObm1o9
TLSH T1262512213B6C9FA2D23E63F182D8D94513F6645A603EE7090DC370DF6AA1F508B51BA7
TrID 63.0% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
11.2% (.SCR) Windows screen saver (13097/50/3)
9.0% (.EXE) Win64 Executable (generic) (10523/12/4)
5.6% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
3.8% (.EXE) Win32 Executable (generic) (4505/5/1)
Reporter adrian__luca
Tags:exe RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
276
Origin country :
HU HU
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
PO160.exe
Verdict:
Malicious activity
Analysis date:
2023-09-25 08:12:50 UTC
Tags:
rat remcos remote keylogger
Link:
https://app.any.run/tasks/4fd9aaf9-0a71-4827-8b49-c49882259162

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Remcos
Create hunting rule
Link:
https://www.capesandbox.com/analysis/451031/
Detection(s):
SecuriteInfo.com.MSIL.Kryptik.WZA.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a custom TCP request
Сreating synchronization primitives
Creating a process with a hidden window
Launching a process
Adding an exclusion to Microsoft Defender
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
packed powershell
Link:
https://www.filescan.io/uploads/6511411e1edabd99829fb0f0/reports/35926919-350c-43b8-baaf-b420f3b63d02/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/4dd39cd7e19df27e79b7aecf317eb2ff409a3d15c2abd470a055e11c3aeefb6d
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:
Malicious Packer
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/33137398-0f22-440d-bca2-6cbb9793d956
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
rans.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1313750
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Adds a directory exclusion to Windows Defender
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to bypass UAC (CMSTPLUA)
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
Delayed program exit found
Found malware configuration
Injects a PE file into a foreign processes
Installs a global keyboard hook
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
Sigma detected: Scheduled temp file as task from temp location
Uses dynamic DNS services
Uses schtasks.exe or at.exe to add and modify task schedules
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1313750 Sample: PO160.exe Startdate: 25/09/2023 Architecture: WINDOWS Score: 100 43 obclondon.ddns.net 2->43 45 geoplugin.net 2->45 59 Multi AV Scanner detection for domain / URL 2->59 61 Found malware configuration 2->61 63 Malicious sample detected (through community Yara rule) 2->63 65 12 other signatures 2->65 8 PO160.exe 7 2->8         started        12 aBwgHa.exe 5 2->12         started        signatures3 process4 file5 37 C:\Users\user\AppData\Roaming\aBwgHa.exe, PE32 8->37 dropped 39 C:\Users\user\AppData\Local\...\tmp699C.tmp, XML 8->39 dropped 67 Uses schtasks.exe or at.exe to add and modify task schedules 8->67 69 Writes to foreign memory regions 8->69 71 Adds a directory exclusion to Windows Defender 8->71 14 vbc.exe 3 15 8->14         started        19 powershell.exe 23 8->19         started        21 powershell.exe 23 8->21         started        23 schtasks.exe 1 8->23         started        73 Multi AV Scanner detection for dropped file 12->73 75 Machine Learning detection for dropped file 12->75 77 Injects a PE file into a foreign processes 12->77 25 schtasks.exe 1 12->25         started        27 vbc.exe 12->27         started        signatures6 process7 dnsIp8 47 obclondon.ddns.net 94.156.253.136, 4072, 49701 TECHNOFY-ASBG Bulgaria 14->47 49 geoplugin.net 178.237.33.50, 49702, 80 ATOM86-ASATOM86NL Netherlands 14->49 41 C:\ProgramData\remcos\logs.dat, data 14->41 dropped 51 Contains functionality to bypass UAC (CMSTPLUA) 14->51 53 Contains functionalty to change the wallpaper 14->53 55 Contains functionality to steal Chrome passwords or cookies 14->55 57 5 other signatures 14->57 29 conhost.exe 19->29         started        31 conhost.exe 21->31         started        33 conhost.exe 23->33         started        35 conhost.exe 25->35         started        file9 signatures10 process11
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/4dd39cd7e19df27e79b7aecf317eb2ff409a3d15c2abd470a055e11c3aeefb6d/
Threat name:
ByteCode-MSIL.Trojan.Vigorf
Create hunting rule
Status:
Malicious
First seen:
2023-09-21 01:03:13 UTC
File Type:
PE (.Net Exe)
Extracted files:
19
AV detection:
20 of 38 (52.63%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=jxjzzv7btxzh46nxv3htc7vs75ajupivykv5i4fakxqryoxo7nwq._file
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:remotehost rat
Link:
https://tria.ge/reports/230925-j4e73adf2z/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Checks computer location settings
Uses the VBS compiler for execution
Remcos
Malware Config
C2 Extraction:
obclondon.ddns.net:4072
obclondon.duckdns.org:4072
Unpacked files
SH256 hash:
aa387b11bec2d490956514c893600cd7a2ddfca0bc64821fc727747b62517023
MD5 hash:
3e402453631bf2f4d5870cdcac9d7f9f
SHA1 hash:
78b8f2547360aab85d48b6d884987a7f126df340
Detections:
Remcos
Create hunting rule
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/299a197f-bbfc-421b-8b70-948870509f8e/
Parent samples :
6c17244fb01d8a66bce39e0c2ba32293c8c955de7afeb0db1fb0da7814039206
c06b82a4003da0da508dbad0b63fad050682b8490aefa104f4f9f016abb60fb6
ec901217558e77f2f449031a6a1190b1e99b30fa1bb8d8dabc3a99bc69833784
ca9c5b008a075bbdb57a89b0aef111458f5f9c8ee21f279a06abc481d35ba324
4dd39cd7e19df27e79b7aecf317eb2ff409a3d15c2abd470a055e11c3aeefb6d
SH256 hash:
f81eaa1abe14620a12d66f2906fb74536570f579489befc12d985b2483d17ff8
MD5 hash:
6a1985480d88415dab4af9e77965933d
SHA1 hash:
36ac47cd70012c3057281fed60665f59cdacf28c
Link:
https://www.unpac.me/results/299a197f-bbfc-421b-8b70-948870509f8e/
SH256 hash:
1bf242a8529afa5043bb7af879cda3d6cef51582088b41a7cd79657448a6b310
MD5 hash:
2a5a098b6a59ead9c097e350b6548277
SHA1 hash:
2b1027d7763b1fe4b3e315057cb7e46b030edcf6
Link:
https://www.unpac.me/results/299a197f-bbfc-421b-8b70-948870509f8e/
SH256 hash:
7ec118e70613ce2d9aee29cda2918ca710dde346c68d4da75c2ea0402e6d4391
MD5 hash:
1622a62bf6805b2dca82a8632eceac71
SHA1 hash:
071b72a5a1231149dfe4b9fcfa3a6ee49265ab7c
Link:
https://www.unpac.me/results/299a197f-bbfc-421b-8b70-948870509f8e/
SH256 hash:
4dd39cd7e19df27e79b7aecf317eb2ff409a3d15c2abd470a055e11c3aeefb6d
MD5 hash:
92bb76cb7c432d244b9ae55875a8a72b
SHA1 hash:
2e74b484a20f039731617612da2a1db3bbb1aa2b
Link:
https://www.unpac.me/results/299a197f-bbfc-421b-8b70-948870509f8e/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/4dd39cd7e19d/report/overview.html
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/4dd39cd7e19df27e79b7aecf317eb2ff409a3d15c2abd470a055e11c3aeefb6d

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:AgentTesla_DIFF_Common_Strings_01
Create hunting rule
Author:schmidtsz
Description:Identify partial Agent Tesla strings
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

File information

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

Malspam

RemcosRAT

Executable exe 4dd39cd7e19df27e79b7aecf317eb2ff409a3d15c2abd470a055e11c3aeefb6d

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/451031/

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