MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 758ed7414002a966ebe4bb96fd93b745cec7fd274a2bdfccf07e40b3f8a48b5c. 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 11 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 758ed7414002a966ebe4bb96fd93b745cec7fd274a2bdfccf07e40b3f8a48b5c
SHA3-384 hash: b3bc8825611a628b8b23f9b005e75ac6643528641a27c91a78e8543be8d2ae261c3334ce0fb89e2685198d2ee16d671e
SHA1 hash: 7b57b7373f053957de0e4c1d33ea8dad3cdea3d4
MD5 hash: d1dcc6de1f01f259b30e7e38c8d5fad9
humanhash: timing-sad-october-winner
File name:5293ea9467ea45e928620a5ed74440f5.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:479'744 bytes
First seen:2021-02-22 06:41:04 UTC
Last seen:2021-02-23 15:29:30 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'742 x AgentTesla, 19'606 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:Zh2EqloXMYAtB7KPvUBRXZGCWwmkF86BK8hgl:ZhcZr7KP8BzV8oK8hw
Threatray 1'581 similar samples on MalwareBazaar
TLSH 64A4125223E83B12F8BEA7F1547601041BB2B6253636EA6C1FD164DEA235F91CB61F13
Reporter abuse_ch
Tags:exe nVpn RAT RemcosRAT


Avatar
abuse_ch
Malspam distributing RemcosRAT:

HELO: slot0.groveressentials.xyz
Sending IP: 203.159.80.67
From: Purchasing - Sales04 <order@groveressentials.xyz>
Subject: rfq/20201 FEB-22 RFQ_EXPORT_QUOTE_REQUEST/PO009962258/(đơn hàng mới)
Attachment: 5293ea9467ea45e928620a5ed74440f5.tar (contains "5293ea9467ea45e928620a5ed74440f5.exe")

RemcosRAT C2:
sandshoe.myfirewall.org:2404 (79.134.225.105)

Pointing to nVpn:
% Information related to '79.134.225.0 - 79.134.225.127'

% Abuse contact for '79.134.225.0 - 79.134.225.127' is 'abuse@privacyfirst.sh'

inetnum: 79.134.225.0 - 79.134.225.127
netname: PRIVACYFIRST-EU
country: EU
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.
admin-c: TPP15-RIPE
tech-c: TPP15-RIPE
status: ASSIGNED PA
mnt-by: AF15-MNT
org: ORG-TPP6-RIPE
created: 2020-07-14T15:26:02Z
last-modified: 2020-07-14T15:31:06Z
source: RIPE

Intelligence

File Origin
# of uploads :
3
# of downloads :
109
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/118187/
Detection(s):
SecuriteInfo.com.Trojan.Packed2.42850.23220.2171.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Creating a file
Creating a file in the %AppData% subdirectories
Creating a file in the %temp% directory
Creating a process from a recently created file
Creating a process with a hidden window
Deleting a recently created file
Running batch commands
Launching a process
Unauthorized injection to a recently created process
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
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:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/613654
Signature
Allocates memory in foreign processes
Binary contains a suspicious time stamp
C2 URLs / IPs found in malware configuration
Changes security center settings (notifications, updates, antivirus, firewall)
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 (creates a PE file in dynamic memory)
Drops PE files with benign system names
Found malware configuration
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 domain / URL
Sigma detected: Remcos
Sigma detected: Suspicious Svchost Process
Sigma detected: System File Execution Location Anomaly
System process connects to network (likely due to code injection or exploit)
Writes to foreign memory regions
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 355835 Sample: 5293ea9467ea45e928620a5ed74... Startdate: 22/02/2021 Architecture: WINDOWS Score: 100 71 sandshoe.myfirewall.org 2->71 89 Multi AV Scanner detection for domain / URL 2->89 91 Found malware configuration 2->91 93 Malicious sample detected (through community Yara rule) 2->93 95 8 other signatures 2->95 14 5293ea9467ea45e928620a5ed74440f5.exe 3 2->14         started        18 svchost.exe 2->18         started        20 svchost.exe 2->20         started        22 11 other processes 2->22 signatures3 process4 dnsIp5 67 5293ea9467ea45e928620a5ed74440f5.exe.log, ASCII 14->67 dropped 105 Contains functionality to steal Chrome passwords or cookies 14->105 107 Contains functionality to capture and log keystrokes 14->107 109 Contains functionality to inject code into remote processes 14->109 115 2 other signatures 14->115 25 5293ea9467ea45e928620a5ed74440f5.exe 4 5 14->25         started        111 Injects a PE file into a foreign processes 18->111 28 svchost.exe 18->28         started        30 svchost.exe 18->30         started        113 Changes security center settings (notifications, updates, antivirus, firewall) 20->113 32 MpCmdRun.exe 20->32         started        73 127.0.0.1 unknown unknown 22->73 34 svchost.exe 22->34         started        file6 signatures7 process8 file9 61 C:\Users\user\AppData\Roaming\...\svchost.exe, PE32 25->61 dropped 63 C:\Users\user\...\svchost.exe:Zone.Identifier, ASCII 25->63 dropped 36 wscript.exe 1 25->36         started        38 conhost.exe 32->38         started        process10 process11 40 cmd.exe 1 36->40         started        process12 42 svchost.exe 3 40->42         started        46 conhost.exe 40->46         started        file13 65 C:\Users\user\AppData\...\svchost.exe.log, ASCII 42->65 dropped 97 Detected unpacking (creates a PE file in dynamic memory) 42->97 99 Machine Learning detection for dropped file 42->99 101 Contains functionality to steal Chrome passwords or cookies 42->101 103 3 other signatures 42->103 48 svchost.exe 4 3 42->48         started        signatures14 process15 dnsIp16 69 sandshoe.myfirewall.org 79.134.225.105, 2404, 49724, 49725 FINK-TELECOM-SERVICESCH Switzerland 48->69 81 System process connects to network (likely due to code injection or exploit) 48->81 83 Writes to foreign memory regions 48->83 85 Allocates memory in foreign processes 48->85 87 Injects a PE file into a foreign processes 48->87 52 svchost.exe 48->52         started        signatures17 process18 process19 54 iexplore.exe 52->54         started        process20 56 iexplore.exe 54->56         started        59 iexplore.exe 54->59         started        dnsIp21 75 github.com 140.82.121.4, 443, 49734, 49735 GITHUBUS United States 56->75 77 avatars.githubusercontent.com 185.199.108.133, 443, 49742, 49743 FASTLYUS Netherlands 56->77 79 2 other IPs or domains 56->79
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/758ed7414002a966ebe4bb96fd93b745cec7fd274a2bdfccf07e40b3f8a48b5c/
Threat name:
ByteCode-MSIL.Packed.Generic
Create hunting rule
Status:
Suspicious
First seen:
2021-02-22 06:41:08 UTC
AV detection:
13 of 46 (28.26%)
Threat level:
  1/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=owhnoqkaakuwn27exolp3e5xixhmp7jhjiv57thqpzalh6fernoa._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
21691425c52cf7a77c0e3a65cc1c0c59cb026d5b76e78160ebb8a553f9bbe50c
RemcosRAT
3b1b352f3c4d0fe235b45d9db418e1e4155ab31265ee368ed646ac38071a2eda
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4791861118e0be776fd14153e2feca7d25f5a91a6c32a997385f5ae272e3d7c8
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61d9f4cbc76b7889d7d17d262b63c0fd2ee40642653063b1eb6ab84397f8c57b
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82027bdaf86e2d0da1c45ede5efd820a1cbaace1b1b8f7675b8115d82db75f26
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d34e588c8bef9cef39708c52f7f372bcd4b5fc39e4eaf0b9193aa586a10d7cc2
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dfd3c33bf7be405cea03a045f3df2d9ff35f04c7da918eb916b6f224a58eea1f
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e26c95b32b64e3f7b5d72d52be2fd7cb52c7a2c1df25f5337a783a1735f806ad
RemcosRAT
+ 1'571 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos persistence rat
Link:
https://tria.ge/reports/210222-lz3473vphx/
Behaviour
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Adds Run key to start application
Executes dropped EXE
Remcos
Malware Config
C2 Extraction:
sandshoe.myfirewall.org:2404
Unpacked files
SH256 hash:
779c6d8e9d67f00a82a7c1ae51a4ad61244dec07e5b1392a8eb00b9415b19f3c
MD5 hash:
8d89a4c734c0d28517b3e37cf07a47cf
SHA1 hash:
cbab966eba785934000540645ea3e3fc068d442c
Detections:
win_remcos_g0
Create hunting rule
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/13d3cad3-c132-453c-b439-e56959fcdb44/
SH256 hash:
6a5d550336c6452f94d6efc9495dbaab283d5a3d01a1e89f15dc5205bc81fc3c
MD5 hash:
eefb6d2296bf6c1706bf75702e93d0bc
SHA1 hash:
b96d7025c66cb24bfa2bb5ab7f52125d1cb8b776
Link:
https://www.unpac.me/results/13d3cad3-c132-453c-b439-e56959fcdb44/
SH256 hash:
f0a09c48af16c079c37ad0914f18897976357981fe5ee6f556ab9f9f70b9a671
MD5 hash:
f984a71581f6da5732110be2a569a392
SHA1 hash:
10de05b6b35fc5dbc00c42d59a4b850bcaae01e6
Link:
https://www.unpac.me/results/13d3cad3-c132-453c-b439-e56959fcdb44/
SH256 hash:
758ed7414002a966ebe4bb96fd93b745cec7fd274a2bdfccf07e40b3f8a48b5c
MD5 hash:
d1dcc6de1f01f259b30e7e38c8d5fad9
SHA1 hash:
7b57b7373f053957de0e4c1d33ea8dad3cdea3d4
Link:
https://www.unpac.me/results/13d3cad3-c132-453c-b439-e56959fcdb44/
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:INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFu
Create hunting rule
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time
Rule name:INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFuture
Create hunting rule
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time
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

tar fc491b5658b165144b28c152d8bc996aeacd6f77ce865740eb1d94a0f1912a2a

RemcosRAT

Executable exe 758ed7414002a966ebe4bb96fd93b745cec7fd274a2bdfccf07e40b3f8a48b5c

(this sample)

  
Dropped by
MD5 93e13eb1353c58e7a8a050897da2e385
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/118187/
  
Dropped by
SHA256 fc491b5658b165144b28c152d8bc996aeacd6f77ce865740eb1d94a0f1912a2a

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