MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 aeb1aab3be5b90cb85bfe28f0e092c83fee4a742a9cda7b0d8a6e464e6fa7342. 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: 12


Intelligence 12 IOCs YARA 9 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: aeb1aab3be5b90cb85bfe28f0e092c83fee4a742a9cda7b0d8a6e464e6fa7342
SHA3-384 hash: 728eaf0afb9bd68204aad21a12a3e733b1e61cb0ad4114215a9cd8806e10ff451642f05b16115e39aa8938867a59aeca
SHA1 hash: cebda0a60751e95d44bf19522c0f315595c47f51
MD5 hash: 35d3f86c5715649c8a4273e6a52b0b54
humanhash: red-zulu-mirror-stairway
File name:Shipping Document PL&BL003534,pdf.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:691'200 bytes
First seen:2021-01-06 06:39:27 UTC
Last seen:2021-01-06 08:34:14 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'741 x AgentTesla, 19'606 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:EJZatLTZCZdmblvGcBElNOoSvhkvFqNmeeK:EJZATZsmbxGEaooIqF9ee
Threatray 1'288 similar samples on MalwareBazaar
TLSH 22E48C437BF05601F9BA5B388A74493097B3BD269B6DC13E58D4305E0AF2A8098767F7
Reporter abuse_ch
Tags:DHL exe nVpn RAT RemcosRAT


Avatar
abuse_ch
Malspam distributing RemcosRAT:

HELO: mail10.brandsloveki.com
Sending IP: 143.110.151.15
From: DHL Express <office@ignabest.com>
Subject: Commercial Invoice & BL
Attachment: Shipping Document PLBL003534,pdf.iso (contains "Shipping Document PL&BL003534,pdf.exe")

RemcosRAT C2:
blessings2021.ddns.net:2021 (185.244.30.19)

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 :
260
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Shipping Document PLBL003534.xls
Verdict:
Malicious activity
Analysis date:
2021-01-06 06:36:49 UTC
Tags:
macros trojan loader rat remcos
Link:
https://app.any.run/tasks/291e1972-47ea-47bd-8a0d-1d8f5a49e065

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/110652/
Detection(s):
SecuriteInfo.com.Artemis35D3F86C5715.3161.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Launching a process
Creating a process with a hidden window
Running batch commands
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/574792
Signature
.NET source code contains potential unpacker
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
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
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: 336454 Sample: Shipping Document PL&BL0035... Startdate: 06/01/2021 Architecture: WINDOWS Score: 100 74 Malicious sample detected (through community Yara rule) 2->74 76 Multi AV Scanner detection for dropped file 2->76 78 Sigma detected: Scheduled temp file as task from temp location 2->78 80 14 other signatures 2->80 11 Shipping Document PL&BL003534,pdf.exe 7 2->11         started        14 remcos.exe 4 2->14         started        17 remcos.exe 2->17         started        process3 file4 62 C:\Users\user\AppData\...\kXLgfvFKbJs.exe, PE32 11->62 dropped 64 C:\Users\user\AppData\Local\...\tmpD9CF.tmp, XML 11->64 dropped 66 Shipping Document ...L003534,pdf.exe.log, ASCII 11->66 dropped 19 Shipping Document PL&BL003534,pdf.exe 4 5 11->19         started        22 schtasks.exe 1 11->22         started        90 Injects a PE file into a foreign processes 14->90 24 schtasks.exe 14->24         started        26 remcos.exe 14->26         started        28 schtasks.exe 17->28         started        30 remcos.exe 17->30         started        signatures5 process6 file7 58 C:\Users\user\AppData\Roaming\...\remcos.exe, PE32 19->58 dropped 60 C:\Users\user\...\remcos.exe:Zone.Identifier, ASCII 19->60 dropped 32 wscript.exe 1 19->32         started        35 conhost.exe 22->35         started        37 conhost.exe 24->37         started        39 conhost.exe 28->39         started        process8 dnsIp9 70 192.168.2.1 unknown unknown 32->70 41 cmd.exe 1 32->41         started        process10 process11 43 remcos.exe 5 41->43         started        47 conhost.exe 41->47         started        file12 68 C:\Users\user\AppData\...\remcos.exe.log, ASCII 43->68 dropped 82 Multi AV Scanner detection for dropped file 43->82 84 Contains functionality to steal Chrome passwords or cookies 43->84 86 Contains functionality to capture and log keystrokes 43->86 88 Contains functionality to steal Firefox passwords or cookies 43->88 49 remcos.exe 43->49         started        52 schtasks.exe 43->52         started        54 remcos.exe 43->54         started        signatures13 process14 dnsIp15 72 blessings2021.ddns.net 185.244.30.19, 2021, 49746, 49747 DAVID_CRAIGGG Netherlands 49->72 56 conhost.exe 52->56         started        process16
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/aeb1aab3be5b90cb85bfe28f0e092c83fee4a742a9cda7b0d8a6e464e6fa7342/
Threat name:
ByteCode-MSIL.Backdoor.Crysan
Create hunting rule
Status:
Malicious
First seen:
2021-01-06 02:35:43 UTC
AV detection:
10 of 46 (21.74%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=v2y2vm56loimxbn74khq4cjmqp7ojj2cvhg2pmgyu3sgjzx2onba._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
1c517ddebb6f5893d52918c51a70e56f68b50dd65e0460a673cce3625a0f8a2b
RemcosRAT
3ad976b10711565d40a43e17baa86f178a22066c982363d711db1f7edbff3ff2
RemcosRAT
4096056536154e1fa5a10e3495cd3ddadf7c01022b7b65b0c35a67b2eac2bc6b
RemcosRAT
54c9967a2b3467f1a5961630d0bd429400e781de19866a383267c40e0f9acf2f
RemcosRAT
5b10f4a23880b51923a0df3e9e3c37f40eb0d3cc93de7b463da62f936a501385
RemcosRAT
65228df6e85371a2b4b1e5340f11e36cdc94f8b39bda216c0ed143eaac36912b
RemcosRAT
6c489ebc2d7b407a9058479ee3e54b83949ef2a58ce749528cea74b4f0b5db0e
RemcosRAT
82027bdaf86e2d0da1c45ede5efd820a1cbaace1b1b8f7675b8115d82db75f26
RemcosRAT
d34e588c8bef9cef39708c52f7f372bcd4b5fc39e4eaf0b9193aa586a10d7cc2
RemcosRAT
e1865abf21c3b8f3b3d15e6c6e477468941f9e65700ceaaa0f4cb269d967c83e
RemcosRAT
+ 1'278 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos persistence rat
Link:
https://tria.ge/reports/210106-2lqcmcdhjs/
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:
blessings2021.ddns.net:2021
Unpacked files
SH256 hash:
aeb1aab3be5b90cb85bfe28f0e092c83fee4a742a9cda7b0d8a6e464e6fa7342
MD5 hash:
35d3f86c5715649c8a4273e6a52b0b54
SHA1 hash:
cebda0a60751e95d44bf19522c0f315595c47f51
Link:
https://www.unpac.me/results/d53d7aec-bb4f-456f-a7b7-250787c71750/
SH256 hash:
0759e55dae527464c28d1b84eb6ad517dc9faf34a5ad10d55f652cb410a28f21
MD5 hash:
0ec82c5999a9391b7628d336f567b104
SHA1 hash:
0bd5978b480d87c0227a4bc7d12a761ae870d1aa
Link:
https://www.unpac.me/results/d53d7aec-bb4f-456f-a7b7-250787c71750/
SH256 hash:
4a09fffec9e376036a315f092097ebc2731ef13edc667091a08e1ca8a26d2820
MD5 hash:
82f77235ce3f6c469929ad79591f1af4
SHA1 hash:
5660e9ecf0668e9b097ec597641ef81d650751fb
Link:
https://www.unpac.me/results/d53d7aec-bb4f-456f-a7b7-250787c71750/
SH256 hash:
c84f8bf1e959c7246b3ac806f007caf65dd72c2a12ddcec0a7077d06fccdb0d7
MD5 hash:
585ed66fefb1abc2f1a0f9ac74502d21
SHA1 hash:
59b8133f78555186635d10da0c65d6c83130ce00
Link:
https://www.unpac.me/results/d53d7aec-bb4f-456f-a7b7-250787c71750/
SH256 hash:
caded0c4fd299f30b05f41b1d7314ff21d982f6db44716ebeb1cedf00008bbaf
MD5 hash:
d98d2ccd032f5fb226852e56d86ae862
SHA1 hash:
9b1a83245bb6eab5924241ce7ecaaf9aaffca847
Detections:
win_remcos_g0
Create hunting rule
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/d53d7aec-bb4f-456f-a7b7-250787c71750/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Remcos
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/aeb1aab3be5b90cb85bfe28f0e092c83fee4a742a9cda7b0d8a6e464e6fa7342

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 03d19c0df2b28bc5c806328147d4bfb8fd949dda0dc589a4519c4a6e84a7cfa4

RemcosRAT

Executable exe aeb1aab3be5b90cb85bfe28f0e092c83fee4a742a9cda7b0d8a6e464e6fa7342

(this sample)

  
Dropped by
MD5 46228107022e61e86cccc74dd0857520
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/110652/
  
Dropped by
SHA256 03d19c0df2b28bc5c806328147d4bfb8fd949dda0dc589a4519c4a6e84a7cfa4
  
URLhaus
https://urlhaus.abuse.ch/url/949944/

Comments