MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f7a9768d3a5a59e38316dc5f4f7c1fa32454630fbf11322af88592970be4be6c. 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: 18


Intelligence 18 IOCs YARA 15 File information Comments
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SHA256 hash: f7a9768d3a5a59e38316dc5f4f7c1fa32454630fbf11322af88592970be4be6c
SHA3-384 hash: 844ec23760c821d1e33ba715f29c319bcb3e74ed3b72eab3cc7334d2bd30e7d22d37cc30a51dd3cb582b9e83a9941ae5
SHA1 hash: 5a019f06c80d564d5693a9a5167d1031a277c626
MD5 hash: dff58f37b27c0673bbd872958a5dc70c
humanhash: magazine-network-oxygen-finch
File name:Proof of payment.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:586'752 bytes
First seen:2023-11-01 15:54:00 UTC
Last seen:2023-11-01 17:22:53 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'663 x AgentTesla, 19'478 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:PtBUBo3prvTRP76tLPkpLpJzYHwqgWh4eWBrDqV5:ls6p3RO9kpHYQqd43W
Threatray 2'863 similar samples on MalwareBazaar
TLSH T1F1C422D29A41D205EC9703338A7BC801525BFD45DC76630A62E9B90F6FB7289061BE7F
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10523/12/4)
6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.3% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
File icon (PE):PE icon
dhash icon 02020e8e8e3e304e (5 x RemcosRAT, 1 x RedLineStealer, 1 x AveMariaRAT)
Reporter abuse_ch
Tags:exe RAT RemcosRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
371
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
Proof of payment.exe
Verdict:
Malicious activity
Analysis date:
2023-11-01 17:43:17 UTC
Tags:
rat remcos keylogger
Link:
https://app.any.run/tasks/bd4fc0cf-3e98-4b5a-b376-d99d4df42d65

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/457643/
Detection(s):
SecuriteInfo.com.Win32.BotX-gen.11829.10223.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Running batch commands
Creating a process with a hidden window
Creating a file in the %AppData% directory
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Launching a process
Setting a keyboard event handler
Sending a custom TCP request
Using the Windows Management Instrumentation requests
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
masquerade packed
Link:
https://www.filescan.io/uploads/6542749db38131f117ac4578/reports/cde62a1d-a8eb-40de-867a-bcfffa487b27/overview
Verdict:
Malicious
Labled as:
MSIL.Androm.Generic
Link:
https://www.hybrid-analysis.com/sample/f7a9768d3a5a59e38316dc5f4f7c1fa32454630fbf11322af88592970be4be6c
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.
Malware family:
REMCOS
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/da4dfa44-85e4-4fa8-adbe-236bf63cdd6c
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
rans.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1335532
Signature
.NET source code contains potential unpacker
Adds extensions / path to Windows Defender exclusion list
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to bypass UAC (CMSTPLUA)
Contains functionality to modify clipboard data
Contains functionality to register a low level keyboard hook
Contains functionality to steal Chrome passwords or cookies
Contains functionality to steal Firefox passwords or cookies
Contains functionalty to change the wallpaper
Delayed program exit found
Found malware configuration
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Installs a global keyboard hook
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
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Yara detected Costura Assembly Loader
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1335532 Sample: Proof_of_payment.exe Startdate: 01/11/2023 Architecture: WINDOWS Score: 100 73 Found malware configuration 2->73 75 Malicious sample detected (through community Yara rule) 2->75 77 Antivirus detection for URL or domain 2->77 79 10 other signatures 2->79 9 Olzij.exe 4 2->9         started        12 Proof_of_payment.exe 1 6 2->12         started        15 Olzij.exe 2->15         started        17 2 other processes 2->17 process3 dnsIp4 85 Antivirus detection for dropped file 9->85 87 Multi AV Scanner detection for dropped file 9->87 89 Contains functionality to bypass UAC (CMSTPLUA) 9->89 97 7 other signatures 9->97 20 cmd.exe 1 9->20         started        67 C:\Users\user\AppData\Roaming\Olzij.exe, PE32 12->67 dropped 91 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 12->91 93 Adds extensions / path to Windows Defender exclusion list 12->93 95 Injects a PE file into a foreign processes 12->95 22 Proof_of_payment.exe 3 3 12->22         started        27 cmd.exe 1 12->27         started        29 cmd.exe 15->29         started        69 127.0.0.1 unknown unknown 17->69 file5 signatures6 process7 dnsIp8 31 Olzij.exe 5 20->31         started        34 conhost.exe 20->34         started        71 91.92.247.146, 3348 THEZONEBG Bulgaria 22->71 65 C:\ProgramData\remcos\logs.dat, data 22->65 dropped 81 Installs a global keyboard hook 22->81 83 Adds extensions / path to Windows Defender exclusion list 27->83 36 powershell.exe 23 27->36         started        38 conhost.exe 27->38         started        40 Olzij.exe 29->40         started        42 conhost.exe 29->42         started        file9 signatures10 process11 signatures12 101 Adds extensions / path to Windows Defender exclusion list 31->101 103 Injects a PE file into a foreign processes 31->103 44 cmd.exe 31->44         started        47 Olzij.exe 31->47         started        49 Olzij.exe 31->49         started        51 cmd.exe 40->51         started        53 Olzij.exe 40->53         started        55 Olzij.exe 40->55         started        process13 signatures14 99 Adds extensions / path to Windows Defender exclusion list 44->99 57 conhost.exe 44->57         started        59 powershell.exe 44->59         started        61 conhost.exe 51->61         started        63 powershell.exe 51->63         started        process15
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/f7a9768d3a5a59e38316dc5f4f7c1fa32454630fbf11322af88592970be4be6c
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/f7a9768d3a5a59e38316dc5f4f7c1fa32454630fbf11322af88592970be4be6c/
Threat name:
Win32.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2023-11-01 15:54:08 UTC
File Type:
PE (.Net Exe)
Extracted files:
12
AV detection:
20 of 24 (83.33%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=66uxndj2ljm6hayw3rpu67a7umsfiyypx4itekxyqwjjoc7exzwa._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
3bdd69de010f0f5eab2291127a6645fb8ed19f279276a6e7bf1122cf1937d61c
RemcosRAT
4eecb3d02825158bc36d86c8d75f37137a11576eb8fb9fec7e592648fd369f96
RemcosRAT
6d69abf704c0ac0c71d7d35cc0eaa5b0ba230b7538ee159ad415b06798143c33
RemcosRAT
70844fa5991d0089d8e76bb510ba8aeaeb1f0f053741c5876b15c4ced5075dc9
RemcosRAT
81e133f9aae32be3ff7a818fe7fa37eea017740c139e825641cf50dfaaa2a0a9
RemcosRAT
a8c7f79f118f3ff57bef79b5877355adab4269c99a6c61dfca429a46ff0fb357
RemcosRAT
b09ad34d756d9477b24bca1cb4dfcc95e21aa67f72817560dba0d9042255bdca
RemcosRAT
be8ccfb19dab5c8d7b4273dc77b34c7ca0afea516e6bf85f607904345a3ad54f
RemcosRAT
d1e1c9332fa8a6bd045fd4ccfa11055a4e17d1cad72239aab2400870191c4185
RemcosRAT
d31044022de445b61ba735083a47c5fd1f4d5c8dfcf544da489572ce3fafdc79
RemcosRAT
+ 2'853 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:remotehost persistence rat
Link:
https://tria.ge/reports/231101-tb7rqaac6v/
Behaviour
Suspicious behavior: EnumeratesProcesses
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
Checks computer location settings
Remcos
Malware Config
C2 Extraction:
91.92.247.146:3348
Unpacked files
SH256 hash:
e02fb95b56ae702bb5705483a837acd22e8552dddccc269abbf132cf3e7bd919
MD5 hash:
f55cb4f67d77b289125de94fee784f66
SHA1 hash:
ee3f44681c4c7d8931133a31821073ba8ce8a0d5
Link:
https://www.unpac.me/results/fe1baae3-c35b-4836-ac8c-55e3edc1a8b0/
SH256 hash:
ab24127f64a4079026e05d04c86aab4f83ae1b9ffb45324797ae95716dcd4b18
MD5 hash:
5f0ec0082502d450837b3a811e196eb0
SHA1 hash:
9a2c7c5cc94b06e207b51f0cb0303725972b2670
Link:
https://www.unpac.me/results/fe1baae3-c35b-4836-ac8c-55e3edc1a8b0/
SH256 hash:
19efdf03cb94895935225795f68bb9abfded1869687367013b8b4eee3cc99372
MD5 hash:
4e29f75c0c51b9dec76955f0382d9541
SHA1 hash:
4899aa8e3f57339cbaec8faab777897a76fe1c3a
Link:
https://www.unpac.me/results/fe1baae3-c35b-4836-ac8c-55e3edc1a8b0/
SH256 hash:
b805c7308ab374afc78ab022d6078eecba7ab9c42f2108e5dc2b1ab13b270fe7
MD5 hash:
d4cf03c493567817fc5f71a3c63af9a3
SHA1 hash:
0c2c12d582ceef44870fa23dc9b4cd015e4a653c
Detections:
Remcos
Create hunting rule
win_remcos_w0
Create hunting rule
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/fe1baae3-c35b-4836-ac8c-55e3edc1a8b0/
Parent samples :
640edcd4eb6616347387a6d6a22d7ff623e3702aaa40831fd128c3f9e1a4a414
f7a9768d3a5a59e38316dc5f4f7c1fa32454630fbf11322af88592970be4be6c
SH256 hash:
f7a9768d3a5a59e38316dc5f4f7c1fa32454630fbf11322af88592970be4be6c
MD5 hash:
dff58f37b27c0673bbd872958a5dc70c
SHA1 hash:
5a019f06c80d564d5693a9a5167d1031a277c626
Link:
https://www.unpac.me/results/fe1baae3-c35b-4836-ac8c-55e3edc1a8b0/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/f7a9768d3a5a/report/overview.html
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/f7a9768d3a5a59e38316dc5f4f7c1fa32454630fbf11322af88592970be4be6c

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:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__QueryInfo
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:iexplorer_remcos
Create hunting rule
Author:iam-py-test
Description:Detect iexplorer being taken over by Remcos
Rule name:INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
Create hunting rule
Author:ditekSHen
Description:Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003)
Rule name:maldoc_find_kernel32_base_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:Remcos
Create hunting rule
Author:kevoreilly
Description:Remcos Payload
Rule name:REMCOS_RAT_variants
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:ThreadControl__Context
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:Windows_Trojan_Remcos_b296e965
Create hunting rule
Author:Elastic Security
Rule name:win_remcos_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.remcos.
Rule name:win_remcos_w0
Create hunting rule
Author:Matthew @ Embee_Research
Description:Detects strings present in remcos rat Samples.
Rule name:yarahub_win_remcos_rat_unpacked_aug_2023
Create hunting rule
Author:Matthew @ Embee_Research

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Malspam

RemcosRAT

Executable exe f7a9768d3a5a59e38316dc5f4f7c1fa32454630fbf11322af88592970be4be6c

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/457643/

Comments