MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3e306d7047d78c4f7381e51c0fa80b840e5fa76b14393195faea2791166671b5. 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: 9


Intelligence 9 IOCs YARA 9 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 3e306d7047d78c4f7381e51c0fa80b840e5fa76b14393195faea2791166671b5
SHA3-384 hash: 10197085d2541c3c72d8a65c135c8a8ddffd71666adfcb7fd7f157956fcf1e48c47270ae0bbe7ded18575c35e90394de
SHA1 hash: 67042571fc984775397cf5eb8e33ee222a2e88c1
MD5 hash: 167cf1e89af5496d78bae5905ad03794
humanhash: equal-cat-berlin-batman
File name:OC CVE6535 _TVOP-MIO 20(C) 2020,pdf.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:642'224 bytes
First seen:2020-10-21 10:04:41 UTC
Last seen:2020-10-25 21:48:20 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'738 x AgentTesla, 19'596 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 3072:wuE1fZrC1cOAt5TXCZaR2gJtX0sXM7XvHJqL9imWKYMGvb/hdTI:wuEdZrC1cl
Threatray 917 similar samples on MalwareBazaar
TLSH 9DD4753CADD5223795BBD6B6C9F555CBF91178433122AC4E90DB23820A23BA77DC211E
Reporter abuse_ch
Tags:exe RAT RemcosRAT


Avatar
abuse_ch
Malspam distributing RemcosRAT:

HELO: cloudserver10.qpc.co.th
Sending IP: 203.154.39.142
From: Nelly Juarez Reyes <njuarez@plasticoskasse.com.ar>
Subject: RE: CONFIRMACIÓN DE PEDIDO CVE6535
Attachment: OC CVE6535 _TVOP-MIO 20C 2020.r00 (contains "OC CVE6535 _TVOP-MIO 20(C) 2020,pdf.exe")

RemcosRAT C2:
insidelife1.ddns.net:8811 (216.38.7.231)

Intelligence

File Origin
# of uploads :
2
# of downloads :
68
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Remcos
Create hunting rule
Link:
https://www.capesandbox.com/analysis/73994/
Detection(s):
PUA.Win.Trojan.Generic-6629274-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Using the Windows Management Instrumentation requests
Creating a file in the %AppData% subdirectories
Unauthorized injection to a recently created process
Launching a process
Creating a file
DNS request
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Connection attempt to an infection source
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/505618
Signature
.NET source code contains very large strings
Adds a directory exclusion to Windows Defender
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Contains functionality to capture and log keystrokes
Contains functionality to inject code into remote processes
Contains functionality to steal Chrome passwords or cookies
Contains functionality to steal Firefox passwords or cookies
Detected Remcos RAT
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
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses dynamic DNS services
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 301856 Sample: OC CVE6535 _TVOP-MIO 20(C) ... Startdate: 21/10/2020 Architecture: WINDOWS Score: 100 43 insidelife1.ddns.net 2->43 45 Malicious sample detected (through community Yara rule) 2->45 47 Antivirus detection for dropped file 2->47 49 Antivirus / Scanner detection for submitted sample 2->49 51 15 other signatures 2->51 8 OC CVE6535 _TVOP-MIO 20(C) 2020,pdf.exe 1 4 2->8         started        12 vlc.exe 1 2->12         started        14 vlc.exe 2->14         started        signatures3 process4 file5 33 C:\Users\user\AppData\Roaming\...\vlc.exe, PE32 8->33 dropped 35 C:\Users\user\...\vlc.exe:Zone.Identifier, ASCII 8->35 dropped 37 OC CVE6535 _TVOP-M...C) 2020,pdf.exe.log, ASCII 8->37 dropped 53 Adds a directory exclusion to Windows Defender 8->53 55 Injects a PE file into a foreign processes 8->55 16 OC CVE6535 _TVOP-MIO 20(C) 2020,pdf.exe 2 8->16         started        19 powershell.exe 22 8->19         started        39 C:\Users\user\AppData\Local\...\vlc.exe.log, ASCII 12->39 dropped 21 vlc.exe 12->21         started        23 vlc.exe 12->23         started        25 vlc.exe 12->25         started        27 vlc.exe 12->27         started        29 vlc.exe 14->29         started        signatures6 process7 dnsIp8 41 insidelife1.ddns.net 216.38.7.231, 49747, 49750, 49753 ASN-GIGENETUS United States 16->41 31 conhost.exe 19->31         started        process9
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/3e306d7047d78c4f7381e51c0fa80b840e5fa76b14393195faea2791166671b5/
Threat name:
ByteCode-MSIL.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2020-10-20 21:37:01 UTC
AV detection:
25 of 28 (89.29%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=hyyg24ch26ge644b4uoa7kalqqhf7j3lcq4tdfp25itzcftgog2q._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
046ff9f608525faf76e353263ddad485e547ff4797b183ddd850f0f2c8209f91
RemcosRAT
1a1924da9d272ea46f8a0a62d7e2ecf01746e9a7621c8b1c36950788c3a3bd8c
RemcosRAT
485c1301f4bc84bc2d274f53222cf7ca5fbd8af8728d1aaa977a6574f577fb87
RemcosRAT
65228df6e85371a2b4b1e5340f11e36cdc94f8b39bda216c0ed143eaac36912b
RemcosRAT
736bd7b09aa1e987edac64868cc8e5db0d86e709652e0588e2023d052f3def8f
RemcosRAT
857ad0bf941ee434d96692477bec16c72571ce266091ba4bcc6952f409aff198
RemcosRAT
b530ffc8af72cb51943f2fb8f38bc778c4544f57b61de593960dd4a97327ca64
RemcosRAT
be83ef519ed5e3e444b10b4dd8a77515cda4993c6ce69f565405c9c2bd0901bc
RemcosRAT
ca60958a09d1cd5817504857d90b846a9ce6f6ee1bed7686318b3741108b709c
RemcosRAT
d7c62c1526c39e136b5c7a703c92ec5f8a67c987a7414e0cbb145172671a2293
RemcosRAT
+ 907 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
rat family:remcos persistence
Link:
https://tria.ge/reports/201021-k7pwgkl58j/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Adds Run key to start application
Remcos
Malware Config
C2 Extraction:
insidelife1.ddns.net:8811
Unpacked files
SH256 hash:
3e306d7047d78c4f7381e51c0fa80b840e5fa76b14393195faea2791166671b5
MD5 hash:
167cf1e89af5496d78bae5905ad03794
SHA1 hash:
67042571fc984775397cf5eb8e33ee222a2e88c1
Link:
https://www.unpac.me/results/2f89caaf-be7f-445c-80a0-c577ba14146e/
SH256 hash:
ef8e084c9c5c4853fecdf640f26e0e4f214a6031451524281d4bb7708f926a1c
MD5 hash:
76dbb0c79b0926f697c642f376ce2ac9
SHA1 hash:
ad043a1c9ed2d710f9c89da1f5f4df96c52813db
Detections:
win_remcos_g0
Create hunting rule
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/2f89caaf-be7f-445c-80a0-c577ba14146e/
Parent samples :
3e306d7047d78c4f7381e51c0fa80b840e5fa76b14393195faea2791166671b5
878643568188dd7d9aace8ab1eeb2d239b40813156ead079638f17ddc7d2fd83
786dd4d9050a7a8d83b60280da6360b73ebf5680da7c9e5d8f6762f425ba099e
SH256 hash:
c1db0072aa254e8ecc45d4750ed26365e03347cb22f81fb01842b3116238039a
MD5 hash:
0055a127b7120302673a95e427730571
SHA1 hash:
cc09381848f40c07779c3efb9a95bee207b40bc1
Link:
https://www.unpac.me/results/2f89caaf-be7f-445c-80a0-c577ba14146e/
SH256 hash:
c77b8e0c86ae52d19d31d70bd7add6f85b3baee6f39250b06242344937bfa3df
MD5 hash:
9487f12add5f6c191b7ca4deb03c2ec7
SHA1 hash:
d1f2eb7aa9f799ac6ab4067dc3860fb0ba7bd73a
Link:
https://www.unpac.me/results/2f89caaf-be7f-445c-80a0-c577ba14146e/
Please note that we are no longer able to provide a coverage score for Virus Total.

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:INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
Create hunting rule
Author:ditekSHen
Description:detects Windows exceutables potentially bypassing UAC using eventvwr.exe
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:remcos_rat
Create hunting rule
Author:jeFF0Falltrades
Rule name:REMCOS_RAT_variants
Create hunting rule
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

r00 2402b0b9ac53cb4efc4b51e974a8c533fd1254fb2f65636ff7d3bbbde63d294a

RemcosRAT

Executable exe 3e306d7047d78c4f7381e51c0fa80b840e5fa76b14393195faea2791166671b5

(this sample)

  
Dropped by
MD5 f68fe9d0602920deed45aa8eae0cc2f7
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/73994/
  
Dropped by
SHA256 2402b0b9ac53cb4efc4b51e974a8c533fd1254fb2f65636ff7d3bbbde63d294a

Comments