MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a1c243083cc1870948216df122047ee1a8e473d0fab33283009c0d291567ea10. 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: 10


Intelligence 10 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a1c243083cc1870948216df122047ee1a8e473d0fab33283009c0d291567ea10
SHA3-384 hash: b0c24e203594e4dba0b38fd4ddc4a1472d68e9a7bd8676162f548012c0af99c5bbefc4fc8ea8c7f3733fa7cb163d0aaa
SHA1 hash: 2f5bf4cc3b9f19db7cf537fc3ef6eb43f1c5c74e
MD5 hash: 2c3af3638b6cd632eae19ec3eb5a7f07
humanhash: hawaii-four-blossom-december
File name:MARINA ADVISORY No. 2020-53.PDF.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:932'638 bytes
First seen:2020-08-17 17:53:53 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash fcf1390e9ce472c7270447fc5c61a0c1 (863 x DCRat, 118 x NanoCore, 94 x njrat)
ssdeep 24576:BAOcZeJ7ywN1BAu6C1UDYOt3W0Gxg539FQZMaBQiRt2y:b+wNX62UKxw96ZMARv
Threatray 889 similar samples on MalwareBazaar
TLSH D0151202B7D68871E4731E32993A6B11AC7C39205F34DA2EE3D00D6DEA751D06636BF2
Reporter abuse_ch
Tags:exe nVpn RAT RemcosRAT


Avatar
abuse_ch
Malspam distributing RemcosRAT:

HELO: fmt09.web.com.ph
Sending IP: 216.218.206.49
From: POEA <info1@poea.gov.ph>
Subject: MARINA ADVISORY No. 2020-54
Attachment: MARINA ADVISORY No. 2020-53.PDF.uue (contains "MARINA ADVISORY No. 2020-53.PDF.exe")

RemcosRAT C2:
alhabib4rec.freeddns.org:2404 (185.140.53.135)

Pointing to nVpn:

% Information related to '185.140.53.0 - 185.140.53.255'

% Abuse contact for '185.140.53.0 - 185.140.53.255' is 'abuse@privacyfirst.sh'

inetnum: 185.140.53.0 - 185.140.53.255
remarks: This prefix is assigned to The PRIVACYFIRST Project, which
remarks: operates infrastructure jointly used by various VPN service
remarks: providers. We have a very strong focus on privacy and freedom.
remarks: In case of abuse, we encourage all international law enforcement
remarks: agencies to get in touch with our abuse contact. Due to the fact
remarks: that we keep no logs of user activities and only share data when
remarks: it is legally required under our jurisdiction, it is very unlikely
remarks: for a demand of user information to be successful. Still, that
remarks: should not deter you from reaching out.
netname: PRIVACYFIRST-EU3
country: EU
admin-c: TPP15-RIPE
tech-c: TPP15-RIPE
org: ORG-TPP6-RIPE
status: ASSIGNED PA
mnt-by: PRIVACYFIRST-MNT
created: 2016-10-17T23:24:00Z
last-modified: 2020-07-28T20:56:03Z
source: RIPE

Intelligence

File Origin
# of uploads :
1
# of downloads :
80
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Remcos
Create hunting rule
Link:
https://www.capesandbox.com/analysis/47236/
Detection(s):
Win.Dropper.NetWire-9102409-0
Create hunting rule

PUA.Win.Downloader.Aiis-6803892-0
Create hunting rule

SecuriteInfo.com.Gen.Variant.Johnnie.221809.751.14920.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Searching for the window
Creating a file in the %temp% subdirectories
Enabling the 'hidden' option for files in the %temp% directory
Creating a process from a recently created file
Creating a file
Sending a UDP request
Adding an access-denied ACE
DNS request
Creating a file in the %AppData% subdirectories
Connection attempt
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a recently created process
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/434421
Signature
Allocates memory in foreign processes
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
Drops PE files with a suspicious file extension
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)
Sigma detected: Remcos
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
Uses dynamic DNS services
Writes to foreign memory regions
Yara detected AntiVM autoit script
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 269589 Sample: MARINA ADVISORY No. 2020-53... Startdate: 18/08/2020 Architecture: WINDOWS Score: 100 39 alhabib4rec.freeddns.org 2->39 41 alhabib4rec.duckdns.org 2->41 43 alhabib4rec.ddns.net 2->43 47 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->47 49 Malicious sample detected (through community Yara rule) 2->49 51 Detected Remcos RAT 2->51 53 7 other signatures 2->53 15 MARINA ADVISORY No. 2020-53.PDF.exe 61 2->15         started        signatures3 process4 file5 37 C:\Users\user\AppData\Local\Temp\...\atqg.pif, PE32 15->37 dropped 18 atqg.pif 4 3 15->18         started        process6 signatures7 45 Machine Learning detection for dropped file 18->45 21 wscript.exe 1 18->21         started        process8 process9 23 atqg.pif 21->23         started        process10 25 wscript.exe 1 23->25         started        process11 27 atqg.pif 25->27         started        process12 29 wscript.exe 27->29         started        process13 31 atqg.pif 29->31         started        process14 33 wscript.exe 31->33         started        process15 35 atqg.pif 33->35         started       
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/a1c243083cc1870948216df122047ee1a8e473d0fab33283009c0d291567ea10/
Threat name:
Win32.Backdoor.NanoCore
Create hunting rule
Status:
Malicious
First seen:
2020-08-17 10:09:21 UTC
AV detection:
20 of 29 (68.97%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=uhbegcb4ygdqssbbnxysebd64guoi46q7kztfayatqgssflh5iia._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
1678611ad4996f718c0a8998ce194dfe117bf47529c4ccad51a6816ecf4f1bb4
RemcosRAT
1acf4f64dbce46e70553494cf02959634528477066cc736e3f49df3bb6253923
RemcosRAT
1ca9978db84d8cad7f6a8f838e106799352c386cfa3aee2bbefa195e7fabe166
RemcosRAT
28d1ce2d141fcfc52b6b8a81f5424920ba2818a14e8ac201446697ff977082de
RemcosRAT
3a61804bb8302d42eb46c25a884cf50e7e6e383a9a48bfbfb1cfbe78ed2ed389
RemcosRAT
4d13350ebf3d38475a0a4a8c223fe6c06e00af3585eb499f60e29639b3944d3f
RemcosRAT
6d833bd671f179c8dfdf89aac0bc77cd7bb49f82a98cbf5d8122a9d47fa98e9f
RemcosRAT
9d1f32d9806bafd63451a59e1768502f31cf9dc746c9e92f62b978c1ed259497
RemcosRAT
cd8770808daf4f97a339438001f0ac7dab0853feb07134e6f7bb2fc3db9581c0
RemcosRAT
fba31181ed1957e81c452fa1e860414d3a2bd2da470074a32f196f873a37d9ad
RemcosRAT
+ 879 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
persistence keylogger trojan stealer spyware family:nanocore rat family:remcos
Link:
https://tria.ge/reports/200817-6d6vw2g3ga/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Adds Run key to start application
Loads dropped DLL
Executes dropped EXE
NanoCore
Remcos
Malware Config
C2 Extraction:
alhabib4rec.freeddns.org:2404
alhabib4rec.ddns.net:2404
alhabib4rec.duckdns.org:2404
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
netwire
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/a1c243083cc1870948216df122047ee1a8e473d0fab33283009c0d291567ea10

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: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

uue fc4b757118e0bd58ba78eb5585a37915b2ec9e1e7a266c530eecdf1c1dc18bd6

RemcosRAT

Executable exe a1c243083cc1870948216df122047ee1a8e473d0fab33283009c0d291567ea10

(this sample)

  
Dropped by
MD5 cb180f80133699f06fb274ef3eccad79
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/47236/
  
Dropped by
SHA256 fc4b757118e0bd58ba78eb5585a37915b2ec9e1e7a266c530eecdf1c1dc18bd6

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