MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 823e15c33f7b0b8a824bb0d2eb2b4353b39726a314fa75c2e84b8c9f2dc0af81. 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 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 823e15c33f7b0b8a824bb0d2eb2b4353b39726a314fa75c2e84b8c9f2dc0af81
SHA3-384 hash: 13d2268fb6b03686351eb688dba6805271b24e5207b3a0427c201d896bf60213cbeed27eb0a16802122f9a38b8759696
SHA1 hash: 2d2f5a376cda7d0f309f845210730aed64e3067e
MD5 hash: edee826b3e374736185ba5728ee64ec1
humanhash: pip-lithium-wisconsin-kitten
File name:210820244972.bat
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:989'192 bytes
First seen:2024-08-21 11:14:45 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'462 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 24576:d0vn0PytJPufTIMhbn/M68IeVeV+XG4ZH+V14KnmktXF:d40KtJqNU68IvV4x+lnmi1
Threatray 14 similar samples on MalwareBazaar
TLSH T13F2512003719CC03DD64ABB016B5D3B52BB25E64EA22D382AFD5BCEF7D75BA52440227
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 71e896b2b296e871 (4 x AgentTesla, 2 x RedLineStealer, 2 x Loki)
Reporter threatcat_ch
Tags:exe RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
425
Origin country :
CH CH
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
210820244972.bat
Verdict:
Malicious activity
Analysis date:
2024-08-21 11:16:14 UTC
Tags:
netreactor rat remcos remote stealer keylogger evasion mpress
Link:
https://app.any.run/tasks/aa579069-828b-46f7-a54f-5efa1ccff9ef

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Win32.PWSX-gen.16248.24419.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
96.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=66c5cc38e7ff3f5a063bb225
Tags:
Discovery Encryption Execution Network Static Stealth Remcos
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
masquerade overlay packed remcos vbnet
Link:
https://www.filescan.io/uploads/66c5cc3daa12eb10615efac0/reports/8e6cc60d-f22f-4f9a-afe2-46a0a97c2e45/overview
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/823e15c33f7b0b8a824bb0d2eb2b4353b39726a314fa75c2e84b8c9f2dc0af81
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:
MSIL Injector
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/3027abdd-4a57-4e05-a98d-b1c584d5e067
Result
Threat name:
Remcos, PureLog Stealer
Create hunting rule
Detection:
malicious
Classification:
rans.phis.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1496546
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
AI detected suspicious sample
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
Injects a PE file into a foreign processes
Installs a global keyboard hook
Loading BitLocker PowerShell Module
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
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
Suricata IDS alerts for network traffic
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Instant Messenger accounts or passwords
Tries to steal Mail credentials (via file / registry access)
Tries to steal Mail credentials (via file registry)
Uses dynamic DNS services
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM3
Yara detected PureLog Stealer
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Yara detected WebBrowserPassView password recovery tool
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1496546 Sample: 210820244972.bat.exe Startdate: 21/08/2024 Architecture: WINDOWS Score: 100 52 method8888.ddns.net 2->52 54 geoplugin.net 2->54 68 Suricata IDS alerts for network traffic 2->68 70 Found malware configuration 2->70 72 Malicious sample detected (through community Yara rule) 2->72 76 15 other signatures 2->76 8 210820244972.bat.exe 7 2->8         started        12 SIAJcjELm.exe 5 2->12         started        signatures3 74 Uses dynamic DNS services 52->74 process4 file5 42 C:\Users\user\AppData\Roaming\SIAJcjELm.exe, PE32 8->42 dropped 44 C:\Users\...\SIAJcjELm.exe:Zone.Identifier, ASCII 8->44 dropped 46 C:\Users\user\AppData\Local\...\tmp5F76.tmp, XML 8->46 dropped 48 C:\Users\user\...\210820244972.bat.exe.log, ASCII 8->48 dropped 78 Tries to steal Mail credentials (via file registry) 8->78 80 Uses schtasks.exe or at.exe to add and modify task schedules 8->80 82 Adds a directory exclusion to Windows Defender 8->82 84 Injects a PE file into a foreign processes 8->84 14 210820244972.bat.exe 3 15 8->14         started        19 powershell.exe 23 8->19         started        21 schtasks.exe 1 8->21         started        86 Multi AV Scanner detection for dropped file 12->86 88 Contains functionality to bypass UAC (CMSTPLUA) 12->88 90 Contains functionalty to change the wallpaper 12->90 92 5 other signatures 12->92 23 SIAJcjELm.exe 12->23         started        25 schtasks.exe 1 12->25         started        signatures6 process7 dnsIp8 56 method8888.ddns.net 154.216.20.211, 49735, 49736, 6902 SKHT-ASShenzhenKatherineHengTechnologyInformationCo Seychelles 14->56 58 geoplugin.net 178.237.33.50, 49737, 80 ATOM86-ASATOM86NL Netherlands 14->58 50 C:\ProgramData\remcos\logs.dat, data 14->50 dropped 60 Detected Remcos RAT 14->60 62 Maps a DLL or memory area into another process 14->62 64 Installs a global keyboard hook 14->64 27 210820244972.bat.exe 14->27         started        30 210820244972.bat.exe 14->30         started        32 210820244972.bat.exe 2 14->32         started        66 Loading BitLocker PowerShell Module 19->66 34 WmiPrvSE.exe 19->34         started        36 conhost.exe 19->36         started        38 conhost.exe 19->38         started        40 conhost.exe 25->40         started        file9 signatures10 process11 signatures12 94 Tries to steal Instant Messenger accounts or passwords 27->94 96 Tries to steal Mail credentials (via file / registry access) 27->96 98 Tries to harvest and steal browser information (history, passwords, etc) 30->98
Score:
96%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/823e15c33f7b0b8a824bb0d2eb2b4353b39726a314fa75c2e84b8c9f2dc0af81
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/823e15c33f7b0b8a824bb0d2eb2b4353b39726a314fa75c2e84b8c9f2dc0af81/
Threat name:
Win32.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2024-08-21 03:45:42 UTC
File Type:
PE (.Net Exe)
Extracted files:
8
AV detection:
16 of 38 (42.11%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=qi7blqz7pmfyvaslwdjowk2dkozzojvdct5hlqxijogj6loav6aq._file
Verdict:
unknown
Similar samples:
238b48a0994b2bd9e86d0670a02b6c6f7adde932512641b91165c3a489784d00
RemcosRAT
793683a76efa38f5ad0608e7a7419af3802b4a7cd5d3d428f2f1a7e6f0e6ad0e
RemcosRAT
d71c77fa0c464289f6b7fb379d7fcbf0cdd6cc8d7bacf6c989a5f0eb5c215bab
RemcosRAT
db20bf3295f1aae23ce386ffb850622a77a474a8a1ddaf240965082ee03055bf
RemcosRAT
f4cc2743d202249ab338480e5c4cf22f2662065d078da09c89af833dbd1c1717
RemcosRAT
+ 4 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:aug 21c collection credential_access discovery execution rat spyware stealer
Link:
https://tria.ge/reports/240821-ncjtdsyfrq/
Behaviour
Scheduled Task/Job: Scheduled Task
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Accesses Microsoft Outlook accounts
Checks computer location settings
Reads user/profile data of web browsers
Command and Scripting Interpreter: PowerShell
Credentials from Password Stores: Credentials from Web Browsers
Detected Nirsoft tools
NirSoft MailPassView
NirSoft WebBrowserPassView
Remcos
Malware Config
C2 Extraction:
method8888.ddns.net:6902
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/e158fcfc-b841-4510-901b-cc480e440796
Unpacked files
SH256 hash:
41ca676a613453a6ab78a291617074038bb174a6d2586cba1bb9dbbc02247376
MD5 hash:
2f930a78f21b123787bc183fb113cf82
SHA1 hash:
e720782a5f0c3f4d6fadda2824a03e2d6c7e0e38
Detections:
SUSP_OBF_NET_Reactor_Indicators_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/7ce79025-e0fd-41bd-8dd4-aeb4558ddeff/
Parent samples :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 hash:
6acc5d6df27e7a7c84a02305b36188873a3fc0c9cefcbecb82af0c6a1609047c
MD5 hash:
20d04d15be1f8344803d537c208844a4
SHA1 hash:
965b5b2bad3428cb11b1988247b6c593d64e6a3e
Link:
https://www.unpac.me/results/7ce79025-e0fd-41bd-8dd4-aeb4558ddeff/
SH256 hash:
075013d6043abab0f51f86e5818436c01aa02dc092165e336d02f553771a420d
MD5 hash:
d4c96b0d1d239d434c58ca8039e06e8e
SHA1 hash:
385290f3cb28606bf306de0740a4854979802eeb
Detections:
SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24
Create hunting rule
SUSP_OBF_NET_Reactor_Indicators_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/7ce79025-e0fd-41bd-8dd4-aeb4558ddeff/
SH256 hash:
f6671b5687bb1de08527ffe3151f5a89a95550ac46736641c80eb2df018d3bca
MD5 hash:
6fbac84290681723d5dc37103c777d97
SHA1 hash:
0358969578f45ab3a2f4552a934502a6e2334483
Detections:
Remcos
Create hunting rule
win_remcos_auto
Create hunting rule
win_remcos_w0
Create hunting rule
malware_windows_remcos_rat
Create hunting rule
Link:
https://www.unpac.me/results/7ce79025-e0fd-41bd-8dd4-aeb4558ddeff/
SH256 hash:
d8247e67b46e7bc5e1325068a5e3cae80542f9417ce6b85ee49012dcbf0d22f8
MD5 hash:
f50a5c41865b2297a73a0dd94ebcfcae
SHA1 hash:
00af2a07bd849cbd728520d9bef769428c64acc5
Link:
https://www.unpac.me/results/7ce79025-e0fd-41bd-8dd4-aeb4558ddeff/
SH256 hash:
823e15c33f7b0b8a824bb0d2eb2b4353b39726a314fa75c2e84b8c9f2dc0af81
MD5 hash:
edee826b3e374736185ba5728ee64ec1
SHA1 hash:
2d2f5a376cda7d0f309f845210730aed64e3067e
Link:
https://www.unpac.me/results/7ce79025-e0fd-41bd-8dd4-aeb4558ddeff/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/823e15c33f7b/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/823e15c33f7b0b8a824bb0d2eb2b4353b39726a314fa75c2e84b8c9f2dc0af81

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:INDICATOR_KB_CERT_7c1118cbbadc95da3752c46e47a27438
Create hunting rule
Author:ditekSHen
Description:Detects executables signed with stolen, revoked or invalid certificates
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:pe_imphash
Create hunting rule
Rule name:PE_Potentially_Signed_Digital_Certificate
Create hunting rule
Author:albertzsigovits
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.

Malspam

RemcosRAT

Executable exe 823e15c33f7b0b8a824bb0d2eb2b4353b39726a314fa75c2e84b8c9f2dc0af81

(this sample)

  
Delivery method
Distributed via e-mail attachment

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 (HIGH_ENTROPY_VA)high

Comments