MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b4156e553eb5b0bad1d240dd170820106d6ca6bc0d1984a9d09030864349d964. 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 9 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b4156e553eb5b0bad1d240dd170820106d6ca6bc0d1984a9d09030864349d964
SHA3-384 hash: de3921c812ce206486cafa6cc1be8a7da6bb13ecab2cdf7257f06016e5fcec93c2353fff7bbfbc75e9d0a6c3183cbbcc
SHA1 hash: 7a6d33079ba361b3b7225ce1f8417a7b9f109e04
MD5 hash: fea95783acab7e5d4404358fd26e2c43
humanhash: bulldog-pluto-carpet-failed
File name:Shipping document PL and BL0070,pdf.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'268'736 bytes
First seen:2020-12-22 07:29:41 UTC
Last seen:2020-12-22 09:56:53 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'649 x AgentTesla, 19'452 x Formbook, 12'201 x SnakeKeylogger)
ssdeep 24576:OLz7dLEioY4zFrW1jYr8FQY8H4sUaAzwB:O5SzVW9YavK1Uar
Threatray 1'261 similar samples on MalwareBazaar
TLSH AB455B6835E9719FE473DD729AE82CA4EE99BD73530BC1475053228D8A3ED82CF500B6
Reporter abuse_ch
Tags:DHL exe nVpn RAT RemcosRAT


Avatar
abuse_ch
Malspam distributing RemcosRAT:

HELO: mail10.promptcheng.com
Sending IP: 164.90.152.139
From: DHL Express <delivery@dhl.com>
Subject: Your DHL Delivery exception -Friday, December 18, 2020
Attachment: Shipping document PL and BL0070,pdf.iso (contains "Shipping document PL and BL0070,pdf.exe")

RemcosRAT C2:
graceman2021.ddns.net:1717 (185.244.30.22)

Pointing to nVpn:

% Information related to '185.244.30.0 - 185.244.30.255'

% Abuse contact for '185.244.30.0 - 185.244.30.255' is 'abuse@privacyfirst.sh'

inetnum: 185.244.30.0 - 185.244.30.255
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-HU
country: HU
admin-c: TPP15-RIPE
tech-c: TPP15-RIPE
org: ORG-TPP6-RIPE
status: ASSIGNED PA
mnt-by: PRIVACYFIRST-MNT
created: 2019-10-29T14:10:27Z
last-modified: 2020-10-07T21:39:48Z
source: RIPE

Intelligence

File Origin
# of uploads :
2
# of downloads :
361
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Shipping document PL and BL0070,pdf.exe
Verdict:
Malicious activity
Analysis date:
2020-12-22 07:34:46 UTC
Tags:
rat remcos
Link:
https://app.any.run/tasks/f6417bdd-906a-4c02-8d71-69d9eb65342d

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/108667/
Detection(s):
SecuriteInfo.com.Trojan.Inject4.6331.22479.24777.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a custom TCP request
Creating a window
Sending a UDP request
Launching a process
Creating a process with a hidden window
Running batch commands
Result
Gathering data
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/567975
Signature
Binary contains a suspicious time stamp
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
Detected unpacking (changes PE section rights)
Detected unpacking (overwrites its own PE header)
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
Sigma detected: Scheduled temp file as task from temp location
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses dynamic DNS services
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM_3
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 333062 Sample: Shipping document PL and BL... Startdate: 22/12/2020 Architecture: WINDOWS Score: 100 71 Malicious sample detected (through community Yara rule) 2->71 73 Multi AV Scanner detection for dropped file 2->73 75 Sigma detected: Scheduled temp file as task from temp location 2->75 77 16 other signatures 2->77 11 Shipping document PL and BL0070,pdf.exe 7 2->11         started        15 remcos.exe 4 2->15         started        17 remcos.exe 2->17         started        process3 file4 61 C:\Users\user\AppData\Roaming\XDShvmK.exe, PE32 11->61 dropped 63 C:\Users\user\...\XDShvmK.exe:Zone.Identifier, ASCII 11->63 dropped 65 C:\Users\user\AppData\Local\Temp\tmp5E4.tmp, XML 11->65 dropped 67 Shipping document ... BL0070,pdf.exe.log, ASCII 11->67 dropped 87 Injects a PE file into a foreign processes 11->87 19 Shipping document PL and BL0070,pdf.exe 4 5 11->19         started        22 schtasks.exe 1 11->22         started        24 schtasks.exe 15->24         started        26 remcos.exe 15->26         started        28 schtasks.exe 17->28         started        30 remcos.exe 17->30         started        signatures5 process6 file7 55 C:\Users\user\AppData\Roaming\...\remcos.exe, PE32 19->55 dropped 57 C:\Users\user\...\remcos.exe:Zone.Identifier, ASCII 19->57 dropped 32 wscript.exe 1 19->32         started        34 conhost.exe 22->34         started        36 conhost.exe 24->36         started        38 conhost.exe 28->38         started        process8 process9 40 cmd.exe 1 32->40         started        process10 42 remcos.exe 5 40->42         started        46 conhost.exe 40->46         started        file11 59 C:\Users\user\AppData\...\remcos.exe.log, ASCII 42->59 dropped 79 Multi AV Scanner detection for dropped file 42->79 81 Detected unpacking (changes PE section rights) 42->81 83 Detected unpacking (overwrites its own PE header) 42->83 85 5 other signatures 42->85 48 remcos.exe 2 3 42->48         started        51 schtasks.exe 1 42->51         started        signatures12 process13 dnsIp14 69 graceman2021.ddns.net 185.244.30.22, 1717, 49708 DAVID_CRAIGGG Netherlands 48->69 53 conhost.exe 51->53         started        process15
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/b4156e553eb5b0bad1d240dd170820106d6ca6bc0d1984a9d09030864349d964/
Threat name:
ByteCode-MSIL.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2020-12-22 02:16:01 UTC
AV detection:
22 of 27 (81.48%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=wqkw4vj6wwylvuosidorocbacbwwzjv4bumyjkoqsayimq2j3fsa._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
1c517ddebb6f5893d52918c51a70e56f68b50dd65e0460a673cce3625a0f8a2b
RemcosRAT
3ad976b10711565d40a43e17baa86f178a22066c982363d711db1f7edbff3ff2
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4096056536154e1fa5a10e3495cd3ddadf7c01022b7b65b0c35a67b2eac2bc6b
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54c9967a2b3467f1a5961630d0bd429400e781de19866a383267c40e0f9acf2f
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5b10f4a23880b51923a0df3e9e3c37f40eb0d3cc93de7b463da62f936a501385
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65228df6e85371a2b4b1e5340f11e36cdc94f8b39bda216c0ed143eaac36912b
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82027bdaf86e2d0da1c45ede5efd820a1cbaace1b1b8f7675b8115d82db75f26
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d34e588c8bef9cef39708c52f7f372bcd4b5fc39e4eaf0b9193aa586a10d7cc2
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e1865abf21c3b8f3b3d15e6c6e477468941f9e65700ceaaa0f4cb269d967c83e
RemcosRAT
+ 1'251 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos persistence rat
Link:
https://tria.ge/reports/201222-c9fnqabkt6/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Modifies registry class
Suspicious use of SetThreadContext
Adds Run key to start application
Loads dropped DLL
Executes dropped EXE
Remcos
Malware Config
C2 Extraction:
graceman2021.ddns.net:1717
Unpacked files
SH256 hash:
b4156e553eb5b0bad1d240dd170820106d6ca6bc0d1984a9d09030864349d964
MD5 hash:
fea95783acab7e5d4404358fd26e2c43
SHA1 hash:
7a6d33079ba361b3b7225ce1f8417a7b9f109e04
Link:
https://www.unpac.me/results/4b0197ea-c687-4921-b292-cc576db68d5a/
SH256 hash:
19530371c2686a87e7bccaa6382005b9c0cf431b8a384c5bbfbd4e3557670945
MD5 hash:
6d0a964b1bec8bd52ccc891c16bd6f1b
SHA1 hash:
3b154c0687672bbad2008949b175d9b5240ccde5
Link:
https://www.unpac.me/results/4b0197ea-c687-4921-b292-cc576db68d5a/
SH256 hash:
55abf08a6a6ab7c7848a2bc0410d84befe6dcfa118336e2e4f1ee456a8009efc
MD5 hash:
6ce9761c3c3ae715d40a77b982d31dc9
SHA1 hash:
42a5a02eabe7d80d79408549e7686d4e44524361
Link:
https://www.unpac.me/results/4b0197ea-c687-4921-b292-cc576db68d5a/
SH256 hash:
e4d7f5e8559b297bc8eb1803b68c816df579bd5640b8ba5ae58217edad5159e9
MD5 hash:
6ba364111f9c2012cabe3a27c36938ed
SHA1 hash:
6023edcd894329c0e82584de6ce9f39d70f28ede
Link:
https://www.unpac.me/results/4b0197ea-c687-4921-b292-cc576db68d5a/
SH256 hash:
85c0f7200ed9f32579b9a7a0af3bf3aaa994d4d3d038df2d1094b30e960ef6fe
MD5 hash:
5f7ab761753e33a9c4684ef635f9c68a
SHA1 hash:
930236b1c25e065408c0613f867e0081ede52853
Detections:
win_remcos_g0
Create hunting rule
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/4b0197ea-c687-4921-b292-cc576db68d5a/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Trojan
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/b4156e553eb5b0bad1d240dd170820106d6ca6bc0d1984a9d09030864349d964

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

iso 7a0e01967f1ac51c2460b37ecc814b043e240e7613d9ddcd6699116fdbd54a33

RemcosRAT

Executable exe b4156e553eb5b0bad1d240dd170820106d6ca6bc0d1984a9d09030864349d964

(this sample)

  
Dropped by
MD5 e510f87a7d3c89575411132d19c330c1
  
Delivery method
Distributed via e-mail attachment
  
Dropped by
SHA256 7a0e01967f1ac51c2460b37ecc814b043e240e7613d9ddcd6699116fdbd54a33
Cape
Cape
https://www.capesandbox.com/analysis/108667/

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