MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 0c4335d912b6eaf64d36e5a46e54b23068f367867944f01e9ebbea9f9267a605. 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 12 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 0c4335d912b6eaf64d36e5a46e54b23068f367867944f01e9ebbea9f9267a605
SHA3-384 hash: 311f14588243b35abaeb95242f41b784dd2d3325bda84f81c6f00142be01b2f9a9af0f8ee855542de66b12663310019c
SHA1 hash: 25de63ff4090e407bc7cc9457d373175d14dcd29
MD5 hash: 7712a9b195dd816cdd3fd1fac5835203
humanhash: bulldog-mango-oven-apart
File name:82e6033fb85f4abe59e16cb29c9faca2.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:650'752 bytes
First seen:2021-02-05 18:42:57 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:RMq78sEnX4v7IvJFDh+A6gZmuBWgK3QZgJv1bo:RVanIv7DARZmxgVgh5o
Threatray 1'516 similar samples on MalwareBazaar
TLSH FFD4125236FA0B62E6755BF90952B09483B43A273572E25C6ED034FA1E31F84C7A1F27
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: Ella <order@groveressentials.xyz>
Subject: Enquiry
Attachment: file.gz (contains "82e6033fb85f4abe59e16cb29c9faca2.exe")

RemcosRAT C2:
sandshoe.myfirewall.org:2404

Intelligence

File Origin
# of uploads :
1
# of downloads :
105
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
82e6033fb85f4abe59e16cb29c9faca2.exe
Verdict:
Malicious activity
Analysis date:
2021-02-05 18:46:31 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/1d04fd53-0cf0-4d2c-8e63-8fd563abb792

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/115789/
Detection(s):
SecuriteInfo.com.ArtemisTrojan.3080.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:
UNKNOWN
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:
rans.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/600621
Signature
Allocates memory in foreign processes
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
Contains functionalty to change the wallpaper
Detected Remcos RAT
Detected unpacking (creates a PE file in dynamic memory)
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
Sigma detected: Suspicious Svchost Process
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Writes to foreign memory regions
Yara detected AntiVM_3
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 349329 Sample: 82e6033fb85f4abe59e16cb29c9... Startdate: 05/02/2021 Architecture: WINDOWS Score: 100 51 sandshoe.myfirewall.org 2->51 63 Malicious sample detected (through community Yara rule) 2->63 65 Detected Remcos RAT 2->65 67 Yara detected AntiVM_3 2->67 69 6 other signatures 2->69 14 82e6033fb85f4abe59e16cb29c9faca2.exe 3 2->14         started        18 svchosts.exe 2 2->18         started        signatures3 process4 file5 49 82e6033fb85f4abe59e16cb29c9faca2.exe.log, ASCII 14->49 dropped 83 Contains functionalty to change the wallpaper 14->83 85 Contains functionality to steal Chrome passwords or cookies 14->85 87 Contains functionality to capture and log keystrokes 14->87 91 2 other signatures 14->91 20 82e6033fb85f4abe59e16cb29c9faca2.exe 4 5 14->20         started        89 Injects a PE file into a foreign processes 18->89 23 svchosts.exe 18->23         started        signatures6 process7 file8 45 C:\Users\user\AppData\...\svchosts.exe, PE32 20->45 dropped 47 C:\Users\...\svchosts.exe:Zone.Identifier, ASCII 20->47 dropped 25 wscript.exe 1 20->25         started        process9 process10 27 cmd.exe 1 25->27         started        process11 29 svchosts.exe 3 27->29         started        32 conhost.exe 27->32         started        signatures12 77 Detected unpacking (creates a PE file in dynamic memory) 29->77 79 Machine Learning detection for dropped file 29->79 81 Injects a PE file into a foreign processes 29->81 34 svchosts.exe 4 3 29->34         started        process13 dnsIp14 53 sandshoe.myfirewall.org 79.134.225.96, 2404, 49727, 49728 FINK-TELECOM-SERVICESCH Switzerland 34->53 55 192.168.2.1 unknown unknown 34->55 71 Writes to foreign memory regions 34->71 73 Allocates memory in foreign processes 34->73 75 Injects a PE file into a foreign processes 34->75 38 svchost.exe 2 12 34->38         started        signatures15 process16 process17 40 iexplore.exe 38->40         started        process18 42 iexplore.exe 40->42         started        dnsIp19 57 avatars.githubusercontent.com 42->57 59 github.com 140.82.121.4, 443, 49740, 49741 GITHUBUS United States 42->59 61 github.map.fastly.net 151.101.0.133, 443, 49744, 49745 FASTLYUS United States 42->61
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/0c4335d912b6eaf64d36e5a46e54b23068f367867944f01e9ebbea9f9267a605/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-02-05 18:43:07 UTC
AV detection:
23 of 29 (79.31%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=brbtlwisw3vpmtjw4wsg4vfsgbupgz4gpfcpahu6xpvj7ethuycq._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
21691425c52cf7a77c0e3a65cc1c0c59cb026d5b76e78160ebb8a553f9bbe50c
RemcosRAT
3b1b352f3c4d0fe235b45d9db418e1e4155ab31265ee368ed646ac38071a2eda
RemcosRAT
4791861118e0be776fd14153e2feca7d25f5a91a6c32a997385f5ae272e3d7c8
RemcosRAT
4b8335250b1cfcb5fac9790261dd43f5efcbc187c68961ee5afd34662d0599ed
RemcosRAT
5b10f4a23880b51923a0df3e9e3c37f40eb0d3cc93de7b463da62f936a501385
RemcosRAT
61d9f4cbc76b7889d7d17d262b63c0fd2ee40642653063b1eb6ab84397f8c57b
RemcosRAT
82027bdaf86e2d0da1c45ede5efd820a1cbaace1b1b8f7675b8115d82db75f26
RemcosRAT
d34e588c8bef9cef39708c52f7f372bcd4b5fc39e4eaf0b9193aa586a10d7cc2
RemcosRAT
dfd3c33bf7be405cea03a045f3df2d9ff35f04c7da918eb916b6f224a58eea1f
RemcosRAT
e26c95b32b64e3f7b5d72d52be2fd7cb52c7a2c1df25f5337a783a1735f806ad
RemcosRAT
+ 1'506 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos persistence ransomware rat
Link:
https://tria.ge/reports/210205-g9y3g21prj/
Behaviour
Modifies registry class
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Adds Run key to start application
Loads dropped DLL
Executes dropped EXE
Remcos
Malware Config
C2 Extraction:
sandshoe.myfirewall.org:2404
Unpacked files
SH256 hash:
a2a0bbbe8c9ee88441356010f63455c50dfcafe663db757bbc453c815c51d720
MD5 hash:
11e80c54bfeff7f0c120dae46df0a8be
SHA1 hash:
d597b9b0dcac06f0aa00a931bb90de8eba564651
Link:
https://www.unpac.me/results/ea50fec2-32f5-4828-a4ac-9b6cec43b14f/
SH256 hash:
1dcd283fd603bc7550ff79a9e0c8084180b51cc0c1114b0c27d24f2ff02e669a
MD5 hash:
de6f83415ca554e557d14c6e160a7eb2
SHA1 hash:
ba9f478e8ce0205f2572c0576e2721afc6cf60e7
Link:
https://www.unpac.me/results/ea50fec2-32f5-4828-a4ac-9b6cec43b14f/
SH256 hash:
025c3342834cf57c87b59d4880f33ee3ea354e1cccb5cfced81624dde65f8226
MD5 hash:
536f263853ed851ac321d43feb730749
SHA1 hash:
68c0312fc760a43a34eda701ac43f8391e8c9604
Detections:
win_remcos_g0
Create hunting rule
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/ea50fec2-32f5-4828-a4ac-9b6cec43b14f/
Parent samples :
65796dbe5e0bc0d3108d244d9c9721bd8403c6101dc05a2b9aab513f69afebaa
0c4335d912b6eaf64d36e5a46e54b23068f367867944f01e9ebbea9f9267a605
522a495b289cf22898f762f18571b8839194e6232cb80fbb28dc426cbeeee323
SH256 hash:
0c4335d912b6eaf64d36e5a46e54b23068f367867944f01e9ebbea9f9267a605
MD5 hash:
7712a9b195dd816cdd3fd1fac5835203
SHA1 hash:
25de63ff4090e407bc7cc9457d373175d14dcd29
Link:
https://www.unpac.me/results/ea50fec2-32f5-4828-a4ac-9b6cec43b14f/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/0c4335d912b6eaf64d36e5a46e54b23068f367867944f01e9ebbea9f9267a605

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:SUSP_Modified_SystemExeFileName_in_File
Create hunting rule
Author:Florian Roth
Description:Detecst a variant of a system file name often used by attackers to cloak their activity
Reference:https://www.symantec.com/blogs/threat-intelligence/seedworm-espionage-group
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 34829e5292fbcc0060b10367af34283b86567af1c7f2b119d55c1cc8e44e5e1e

RemcosRAT

Executable exe 0c4335d912b6eaf64d36e5a46e54b23068f367867944f01e9ebbea9f9267a605

(this sample)

  
Dropped by
MD5 4a4e92d2fdd4e2def3273abd735f8d0a
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/115789/
  
Dropped by
SHA256 34829e5292fbcc0060b10367af34283b86567af1c7f2b119d55c1cc8e44e5e1e

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