MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 04b0bed3c67cf8a69f413a4f323055d71e3d0a8fec4a0cd96f3e667541b8e63a. 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: 04b0bed3c67cf8a69f413a4f323055d71e3d0a8fec4a0cd96f3e667541b8e63a
SHA3-384 hash: daa1a0f013918465796d50d073e9fd676c7633b3f56de29f6058c19f3822b4ca6752275ebe570c2e05106082e665f5e4
SHA1 hash: 792bd90337a47da4754fa9142b3332cbe5099322
MD5 hash: 8b2fc735cb98caf78c44d2439f093bcf
humanhash: eleven-comet-stream-island
File name:8974393724.scr
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:208'896 bytes
First seen:2021-01-14 19:12:25 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash ae591fed2c9c2d0fb5053e4c533d6b26 (1 x RemcosRAT, 1 x GuLoader)
ssdeep 3072:UCrpPISFN3M3CQNwZeY5rBk5xiHlVqXIqKnoRwz8T4:J1ISMCQ+WyVNqKoR
TLSH 8B14B617384092B8DE2985F6630781B433B9B8BFD60C9609ABFD3F571EE1AAD4421717
Reporter abuse_ch
Tags:DHL nVpn RAT RemcosRAT scr


Avatar
abuse_ch
Malspam distributing RemcosRAT:

HELO: mail.stav.ru
Sending IP: 77.73.48.23
From: DHL DELIVERY ALERT<admin@matetodate.com>
Reply-To: noreply@dhl.com
Subject: DHL DELIVERY ONHOLD NOTIFICATION
Attachment: DHL NOTIFICATION ALERT.IMG (contains "8974393724.scr")

RemcosRAT C2:
duckkill.sytes.net:8686 (194.5.97.6)

Pointing to nVpn:

% Information related to '194.5.97.0 - 194.5.97.255'

% Abuse contact for '194.5.97.0 - 194.5.97.255' is 'abuse@privacyfirst.sh'

inetnum: 194.5.97.0 - 194.5.97.255
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-UK5
country: GB
admin-c: TPP15-RIPE
tech-c: TPP15-RIPE
org: ORG-TPP6-RIPE
mnt-by: PRIVACYFIRST-MNT
status: SUB-ALLOCATED PA
created: 2018-07-23T09:31:45Z
last-modified: 2020-08-26T17:48:55Z
source: RIPE

Intelligence

File Origin
# of uploads :
1
# of downloads :
113
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
8974393724.scr
Verdict:
No threats detected
Analysis date:
2021-01-14 19:13:29 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/068b7379-584a-422f-9178-ba28b301d34d

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Guloader
Create hunting rule
Link:
https://www.capesandbox.com/analysis/112026/
Detection(s):
SecuriteInfo.com.BehavesLike.Win32.Fareit.dm.30097.UNOFFICIAL
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Unauthorized injection to a recently created process
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.
Result
Threat name:
GuLoader
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/581698
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Contains functionality to detect hardware virtualization (CPUID execution measurement)
Contains functionality to hide a thread from the debugger
Creates autostart registry keys with suspicious values (likely registry only malware)
Deletes itself after installation
Detected RDTSC dummy instruction sequence (likely for instruction hammering)
Hides threads from debuggers
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Tries to detect Any.run
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Yara detected GuLoader
Yara detected VB6 Downloader Generic
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 339892 Sample: 8974393724.scr Startdate: 14/01/2021 Architecture: WINDOWS Score: 100 30 site-cdn.onenote.net 2->30 32 prda.aadg.msidentity.com 2->32 34 cdn.onenote.net 2->34 44 Antivirus detection for dropped file 2->44 46 Antivirus / Scanner detection for submitted sample 2->46 48 Multi AV Scanner detection for dropped file 2->48 50 4 other signatures 2->50 9 8974393724.exe 2 2 2->9         started        signatures3 process4 signatures5 52 Creates autostart registry keys with suspicious values (likely registry only malware) 9->52 54 Contains functionality to detect hardware virtualization (CPUID execution measurement) 9->54 56 Detected RDTSC dummy instruction sequence (likely for instruction hammering) 9->56 58 4 other signatures 9->58 12 8974393724.exe 5 15 9->12         started        process6 dnsIp7 36 194.5.96.129 IPC-ASUA Netherlands 12->36 38 duckkill.sytes.net 194.5.97.6, 49759, 49760, 49768 DANILENKODE Netherlands 12->38 40 3 other IPs or domains 12->40 26 C:\Users\user\AppData\Local\Temp\...\misc.exe, PE32 12->26 dropped 28 C:\Users\user\AppData\Local\Temp\...\misc.vbs, ASCII 12->28 dropped 60 Tries to detect Any.run 12->60 62 Hides threads from debuggers 12->62 17 wscript.exe 12->17         started        20 cmd.exe 1 12->20         started        file8 signatures9 process10 signatures11 42 Deletes itself after installation 17->42 22 conhost.exe 20->22         started        24 reg.exe 1 20->24         started        process12
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/04b0bed3c67cf8a69f413a4f323055d71e3d0a8fec4a0cd96f3e667541b8e63a/
Threat name:
Win32.Trojan.Generic
Create hunting rule
Status:
Suspicious
First seen:
2021-01-14 19:13:08 UTC
AV detection:
4 of 46 (8.70%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=asyl5u6gpt4knh2bhjhtemcv24pd2cup5rfazwlphzthkqny4y5a._file
Verdict:
malicious
Label(s):
guloader
Create hunting rule
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos evasion persistence rat trojan
Link:
https://tria.ge/reports/210114-6mtl2pz9ms/
Behaviour
Modifies registry key
Suspicious behavior: MapViewOfSection
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Adds Run key to start application
Remcos
UAC bypass
Unpacked files
SH256 hash:
04b0bed3c67cf8a69f413a4f323055d71e3d0a8fec4a0cd96f3e667541b8e63a
MD5 hash:
8b2fc735cb98caf78c44d2439f093bcf
SHA1 hash:
792bd90337a47da4754fa9142b3332cbe5099322
Link:
https://www.unpac.me/results/b6f680db-72e0-4d81-9a7e-e96520c392ab/
SH256 hash:
49b04162c412105ab0857de16713724cbf3234a0b6ba51f3a5286312633f20c3
MD5 hash:
1f1b425190b2fb0396ad2d538b1060ba
SHA1 hash:
413f98641d46fdcabfcaf64f29495667de6282ea
Link:
https://www.unpac.me/results/b6f680db-72e0-4d81-9a7e-e96520c392ab/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.00
Link:
https://yomi.yoroi.company/submissions/04b0bed3c67cf8a69f413a4f323055d71e3d0a8fec4a0cd96f3e667541b8e63a

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

img 631230fd853a8018dbe10295c9ed7629e24faad3d2b0244aec3c319eea31871e

RemcosRAT

Executable exe 04b0bed3c67cf8a69f413a4f323055d71e3d0a8fec4a0cd96f3e667541b8e63a

(this sample)

  
Dropped by
MD5 d36cf0345de74071f9b3d5b152e4bec3
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/112026/
  
Dropped by
SHA256 631230fd853a8018dbe10295c9ed7629e24faad3d2b0244aec3c319eea31871e

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