MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8b3e308bf8008d70c9993b67aed96d3c0b0e472efd9e8335ec8e6e4f1b7b6e69. 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 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 8b3e308bf8008d70c9993b67aed96d3c0b0e472efd9e8335ec8e6e4f1b7b6e69
SHA3-384 hash: ec607abaae724fd44ce2cb032100ac91bd509f7a5a621d1642321b64b6815d7bd964a2f8f802403a6e9466d7bc6c4a03
SHA1 hash: 9744a5db6285f36321f45d82079a07abb310b747
MD5 hash: 86b576a9f9499877827232a8e6bf11d1
humanhash: asparagus-colorado-river-ceiling
File name:Proof Of Payment PDF.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'024'000 bytes
First seen:2024-04-15 05:26:38 UTC
Last seen:2024-04-15 06:34:49 UTC
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:fjpTNBTW0Gr3OdID7gk2nqbDR2NXgFQkZEqeSHWdY3PkpnioxiuS6RugWL6:dTN5diD7L2q4XMEqeSHzZMS6RWL
Threatray 3'869 similar samples on MalwareBazaar
TLSH T13B25231132F9AF63E7BA63F565BC701107B1609AB031DB8D5DAA00E51A38F44D7A8F17
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) (4504/4/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
File icon (PE):PE icon
dhash icon 00822a6ed7a78600 (12 x AgentTesla, 2 x Neshta, 2 x Formbook)
Reporter abuse_ch
Tags:exe RemcosRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
327
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
8b3e308bf8008d70c9993b67aed96d3c0b0e472efd9e8335ec8e6e4f1b7b6e69.exe
Verdict:
Malicious activity
Analysis date:
2024-04-15 05:39:59 UTC
Tags:
rat remcos keylogger
Link:
https://app.any.run/tasks/ad880c12-6a7e-41a9-8f05-933f1e9d8c26

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a process with a hidden window
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Creating a file in the %temp% directory
Launching a process
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Setting a keyboard event handler
DNS request
Connection attempt
Creating a window
Сreating synchronization primitives
Adding an exclusion to Microsoft Defender
Enabling autorun by creating a file
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
explorer lolbin masquerade packed remcos
Link:
https://www.filescan.io/uploads/661cbaad0b46b30369386253/reports/f5deaefa-9fe8-4bd9-82b0-8582b5ef3d9e/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/8b3e308bf8008d70c9993b67aed96d3c0b0e472efd9e8335ec8e6e4f1b7b6e69
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/360ca1e6-c9ea-47a2-becf-97c44e34213e
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
rans.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1425947
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Adds a directory exclusion to Windows Defender
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to bypass UAC (CMSTPLUA)
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
Detected Remcos RAT
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
Loading BitLocker PowerShell Module
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: Remcos
Sigma detected: Scheduled temp file as task from temp location
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM3
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1425947 Sample: Proof Of Payment PDF.exe Startdate: 15/04/2024 Architecture: WINDOWS Score: 100 45 fnbabsa.net 2->45 55 Found malware configuration 2->55 57 Malicious sample detected (through community Yara rule) 2->57 59 Antivirus detection for URL or domain 2->59 61 13 other signatures 2->61 8 Proof Of Payment PDF.exe 7 2->8         started        12 ojhCmtUr.exe 5 2->12         started        signatures3 process4 file5 39 C:\Users\user\AppData\Roaming\ojhCmtUr.exe, PE32 8->39 dropped 41 C:\Users\user\AppData\Local\...\tmp8462.tmp, XML 8->41 dropped 63 Adds a directory exclusion to Windows Defender 8->63 65 Injects a PE file into a foreign processes 8->65 14 Proof Of Payment PDF.exe 3 2 8->14         started        19 powershell.exe 23 8->19         started        21 powershell.exe 23 8->21         started        23 schtasks.exe 1 8->23         started        67 Multi AV Scanner detection for dropped file 12->67 69 Contains functionality to bypass UAC (CMSTPLUA) 12->69 71 Contains functionalty to change the wallpaper 12->71 73 4 other signatures 12->73 25 ojhCmtUr.exe 12->25         started        27 schtasks.exe 1 12->27         started        signatures6 process7 dnsIp8 47 fnbabsa.net 134.73.71.218, 3366 LAYER-HOST-HOUSTONUS United States 14->47 43 C:\ProgramData\remcos\logs.dat, data 14->43 dropped 49 Detected Remcos RAT 14->49 51 Installs a global keyboard hook 14->51 53 Loading BitLocker PowerShell Module 19->53 29 WmiPrvSE.exe 19->29         started        31 conhost.exe 19->31         started        33 conhost.exe 21->33         started        35 conhost.exe 23->35         started        37 conhost.exe 27->37         started        file9 signatures10 process11
Score:
99%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/8b3e308bf8008d70c9993b67aed96d3c0b0e472efd9e8335ec8e6e4f1b7b6e69
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/8b3e308bf8008d70c9993b67aed96d3c0b0e472efd9e8335ec8e6e4f1b7b6e69/
Threat name:
Win32.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2024-04-15 05:27:06 UTC
File Type:
PE (.Net Exe)
Extracted files:
13
AV detection:
16 of 23 (69.57%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=rm7dbc7yacgxbsmzhnt25wlnhqfq4rzo7wpignpmrzxe6g33nzuq._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
5755305654c07b239c370661598bc698f8113b41fe5785e0e13098a66cdbd4eb
RemcosRAT
71ae98c7e6f3e776c17594e8007ecf47ea0209f0ca1142515e4958c02267bed9
RemcosRAT
737cedd9e82602536f0b02d2608b856c49b158928de47bb891d401bae810bdc4
RemcosRAT
+ 3'859 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:host rat
Link:
https://tria.ge/reports/240415-f5fcnsfg32/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Checks computer location settings
Remcos
Malware Config
C2 Extraction:
fnbabsa.net:3366
Unpacked files
SH256 hash:
5f8ff7a7c24c72f42f61c65f09d549bd4b891f22acba42370d6793cb5d090824
MD5 hash:
08ceb50701a46faea7f08d899f495d84
SHA1 hash:
f0b39a7a40a11b03af50f5a13d43f70896c2e179
Detections:
Remcos
Create hunting rule
win_remcos_w0
Create hunting rule
win_remcos_auto
Create hunting rule
malware_windows_remcos_rat
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
Create hunting rule
Link:
https://www.unpac.me/results/f5b96596-474f-4f6f-807d-bcbb51ce67ee/
Parent samples :
8b3e308bf8008d70c9993b67aed96d3c0b0e472efd9e8335ec8e6e4f1b7b6e69
d73b4f56fc3cfdc38a9edc71744609285203dcc8548ee8c0bcc7bc19c0e4c0b5
f7f402a9bd7378f2c202d5b1f4105e83981b2733aa3398609fdbff5fc4cc7f0a
SH256 hash:
4f9af1bc7a585bea9a3056d63b9bc1da91cceeab1503cb04724e0abf02de1e11
MD5 hash:
3c9602d0c4e4b4761a61fac9762b75d5
SHA1 hash:
7d3d5703b4fa708620d043e04b36ae7294dd211f
Link:
https://www.unpac.me/results/f5b96596-474f-4f6f-807d-bcbb51ce67ee/
SH256 hash:
6ead44426b9ecae00002d69c0c4be091434d756efe7483614531c39d9cdcb405
MD5 hash:
c8ca3dd877f3189353c77cd4eabb1f7e
SHA1 hash:
12ef6375e5cfb0aae8141494f2a0d2c3fb6b0eca
Detections:
INDICATOR_EXE_Packed_SmartAssembly
Create hunting rule
Link:
https://www.unpac.me/results/f5b96596-474f-4f6f-807d-bcbb51ce67ee/
Parent samples :
4ec8f72bf35c4a1de223b92521d3e0c996809eaf52f50960d8580e89be6152e7
d82adbafec869ce93ab6133e0f88ae81e1f138d6f31bd90aa054fc4331001169
a3a6bfe5a3988d524fafea932f3c02cefb58c149a99900ff9bde8c4c9f317723
bc8e5c7e7dacfb3ed91a8fb6aa5c878bdc52e39ce1c4c797ec39862a53345ce4
8b3e308bf8008d70c9993b67aed96d3c0b0e472efd9e8335ec8e6e4f1b7b6e69
7845739be7bf4d602cbaa0f0a900bea3c631c439eb57fe53d92b3686c49c4b80
fadcd7b36622cde793fdb8b3c509c13efb05a57e5227ea5c0dac37ef49a5cb02
66e4e0b05fbe673afbd9f23ada369eaab823c2ce0285b5004068d6b03e3449e7
8ae053d9300b897c0009559407842f893ca81461f707172cc42a324436839a56
522df31fa6822a48a743918cc4371daaa6ca5aade2713ddf6e4a7726c78d54a7
39d953c3a7a07ccac490d3286fe0c1a079fa2e5041bdc9bc74585b5beae6de7a
24e1635d9baec3de0506b2574420ccec046c903278316dfc461abb19b13b6de9
837c9f462983fee07c9648d487f7ff5e1ec82c9b45d0ae9337f8c452cd0e6b5c
88662dd7853cd4f04a590fc65bd5f431add70a7e9c645e0dbc7bd4d3708c491b
7038b1250cc9380861d92e721d364cb844459f87ecc3fe002b59e97d35926dfa
dedb50b5fe07672b55fc3cbc497b917ce9cde55ffafa5a855cc42addaee124f7
75854947a6a21c6fdacee3b080ad9f9c8c86546b54410a968d6f09c23e5d00c9
8c304594adb8d9835dce06ef5b3c130b7fa299c76e88d204c998401b71266859
eedd6d6a9ec4bf82ca87e66c1ae5b86983e8479598df71f3602283b93dd07035
1a632b809dda5ccb587a4c6dc66f7b0e118e17d91f8e6813a1cb36dfe3396771
fad3e7058eb2fa88ce97e62a6a243748d6736f9c4e21e4112ed61a40813588b2
66a0cfa14afdb23dec776fa355b9f89551405989b9838db6398c77ee6c73c084
ba03ce2bfa7e568a1f401420156219b97fce9bbfb3fb391783c804ac75df665e
a7f6e78f6b0dde7599e5388e4e994f79d5a0950db56092c0e2bd0ca9d07f708b
6f786b8f8dd18709b9e4ad44e33cb1074d55aa2f0f3cd1fe3759e8795df0a3a9
e347a46c3060085556d9ec4577d577ab08ee49910495ed084e8059883c75e7da
8eb0fdf0ff3b38ae84311b29effb0030a3b9a38430f7b8ee7918d2eb1301b12e
d405284f75cde4b8c45e3d5c3b41c7bbd6db2c75788cb6d0b1deec5ea60559a4
d6e165b127f88b60636959975f143221c8de8bef290f662917f9f61e55f2bf33
9513ea80cc5dabab23c0069ed1b8caaff8d2d10ae9e842bda19a69eb5140a497
64b47fde027cfd04023331dcd19612933dc9b9d77731b487844c129d0d354b20
ff939a5a3ccca65092f55808e05edec69e6db26df74db1b743cdc96f4c872279
7abd4b1c93d30c7ab8f817ebcf83262950131614590c9b254f05449ec493818c
17ffcd130215ae5b3f8ba4f4aa5577abdf7c44a0c2e70619c35e42bafbbb3a82
40bb8b7b9fec345f4aa54b05cc02fa42b404b9de341e07f7c6d7a0c1a1d801ff
82f32be71d9c226d53658209924e4e534383b0db5481dbd49923692ef5666940
edba3afe3fedc9e2ef23525c676755c2bdb76836cd4946eb4d97b22a535991be
98206390a847ef2600f916f0076f687d5261ff98ca02b5292fdf44017ca0e006
f2664bdfd035d146843f1575528eb9694a98b32f99488058a0e04885ad62e9c2
e609540945ebef9d1596ca2b25b84c647093c5cd2739bd956d65d78b0b3aa7e7
3815bc3a78dc96a0af4aca4446b3afa741d3910530ae69b06895b0e499d49aa6
9bf25ebe467e570fc91e2003b17061c765fcb54b6d505a7db43263981504fa5f
7d8a3cc2392ce50d2f75137711acb7358d30157108bfb221c509b0afbab197ec
SH256 hash:
de1e9d554306848081c41e88d825cf317e12ef57f016053ee7d1a1a5f572e010
MD5 hash:
f318b94218953d79cbbb50fd711d1057
SHA1 hash:
0812cc7bb97a7718cb97123c6844e6722c2ea938
Link:
https://www.unpac.me/results/f5b96596-474f-4f6f-807d-bcbb51ce67ee/
SH256 hash:
8b3e308bf8008d70c9993b67aed96d3c0b0e472efd9e8335ec8e6e4f1b7b6e69
MD5 hash:
86b576a9f9499877827232a8e6bf11d1
SHA1 hash:
9744a5db6285f36321f45d82079a07abb310b747
Link:
https://www.unpac.me/results/f5b96596-474f-4f6f-807d-bcbb51ce67ee/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/8b3e308bf800/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/8b3e308bf8008d70c9993b67aed96d3c0b0e472efd9e8335ec8e6e4f1b7b6e69

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:AgentTesla_DIFF_Common_Strings_01
Create hunting rule
Author:schmidtsz
Description:Identify partial Agent Tesla strings
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:NETexecutableMicrosoft
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

File information

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

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (GUARD_CF)high

Comments