MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c0b13c8cf91f75fb3ae9448b92656ccf90dbf374855d10add7d8a972bdc5d5b4. 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: 17


Intelligence 17 IOCs YARA 15 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: c0b13c8cf91f75fb3ae9448b92656ccf90dbf374855d10add7d8a972bdc5d5b4
SHA3-384 hash: 3d1dab449ddf42853bcfadbb1c7ce4f16e62491a12d8fae1770c3916d4e61ff493f23657394d4e7dc4d226e25937e17a
SHA1 hash: 8720834732644f7f964767532504dd19321a0cf3
MD5 hash: fd93188a0049f56a08e111b0dd4da4fc
humanhash: oven-fix-oven-sodium
File name:PAYMENT INVOICE.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'180'160 bytes
First seen:2024-02-07 06:50:22 UTC
Last seen:2024-02-12 07:51:13 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'661 x AgentTesla, 19'474 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 24576:qie8N6Z7zncHUAlTNA2YSqoLaBKVTTSAgv9cx:A8N6Z7zc0s1aoLaQWAgv
Threatray 3'429 similar samples on MalwareBazaar
TLSH T1F545F0FD82066919C43536B8C77763DD27BD1EE6BC46CA0684A878B8247F3803619F5E
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)
Reporter abuse_ch
Tags:exe RAT RemcosRAT

Intelligence

File Origin
# of uploads :
3
# of downloads :
294
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
c0b13c8cf91f75fb3ae9448b92656ccf90dbf374855d10add7d8a972bdc5d5b4.exe
Verdict:
Malicious activity
Analysis date:
2024-02-07 07:04:36 UTC
Tags:
rat remcos keylogger
Link:
https://app.any.run/tasks/428ac651-e0c0-4a25-8b1d-1de4a301bd23

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/474987/
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.2511.6287.21840.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
masquerade packed
Link:
https://www.filescan.io/uploads/65c3285b127ab8eb41009c12/reports/353e79a9-99a5-461f-b799-bec8a04de5ca/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/c0b13c8cf91f75fb3ae9448b92656ccf90dbf374855d10add7d8a972bdc5d5b4
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/a8ae3373-7ab1-4323-8b0d-2ca445c872ed
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
rans.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1388039
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
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: 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 signatures2 2 Behavior Graph ID: 1388039 Sample: PAYMENT INVOICE.exe Startdate: 07/02/2024 Architecture: WINDOWS Score: 100 42 Found malware configuration 2->42 44 Malicious sample detected (through community Yara rule) 2->44 46 Antivirus detection for URL or domain 2->46 48 14 other signatures 2->48 7 FcrUBkvxpsOqQP.exe 4 2->7         started        10 PAYMENT INVOICE.exe 6 2->10         started        process3 file4 52 Multi AV Scanner detection for dropped file 7->52 54 Contains functionality to bypass UAC (CMSTPLUA) 7->54 56 Contains functionalty to change the wallpaper 7->56 62 5 other signatures 7->62 13 schtasks.exe 1 7->13         started        15 FcrUBkvxpsOqQP.exe 7->15         started        36 C:\Users\user\AppData\...\FcrUBkvxpsOqQP.exe, PE32 10->36 dropped 38 C:\Users\user\AppData\Local\...\tmpDDDC.tmp, XML 10->38 dropped 58 Adds a directory exclusion to Windows Defender 10->58 60 Injects a PE file into a foreign processes 10->60 17 PAYMENT INVOICE.exe 3 2 10->17         started        22 powershell.exe 23 10->22         started        24 schtasks.exe 1 10->24         started        signatures5 process6 dnsIp7 26 conhost.exe 13->26         started        40 89.249.73.162, 2479 M247GB United Kingdom 17->40 34 C:\ProgramData\remcos\logs.dat, data 17->34 dropped 50 Installs a global keyboard hook 17->50 28 WmiPrvSE.exe 22->28         started        30 conhost.exe 22->30         started        32 conhost.exe 24->32         started        file8 signatures9 process10
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/c0b13c8cf91f75fb3ae9448b92656ccf90dbf374855d10add7d8a972bdc5d5b4
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/c0b13c8cf91f75fb3ae9448b92656ccf90dbf374855d10add7d8a972bdc5d5b4/
Threat name:
ByteCode-MSIL.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2024-02-06 14:02:17 UTC
File Type:
PE (.Net Exe)
Extracted files:
8
AV detection:
20 of 24 (83.33%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=ycytzdhzd527woxjisfzezlmz6inx43uqvorblox3cuxfpof2w2a._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
063e8dc308fea1f6ab248e3704894c8311b85959301e6389ae5ee55726e3ba2a
RemcosRAT
48864de26230a966a7b91425ec7f388726e8ddc5fea72f686d551dc49654cbc1
RemcosRAT
7d5fb292b4477237a05a35eb135a13c9f6d1177987217e94c3558b91fa97c285
RemcosRAT
ecad62ef8415885ac40c6e3889e323293599d9ed531fe62d77e1488c925650d5
RemcosRAT
+ 3'419 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:sthost rat
Link:
https://tria.ge/reports/240207-hmhfesedd4/
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:
89.249.73.162:2479
Unpacked files
SH256 hash:
482cd87b112482c5f42fccd74eb058e784bfe12e0fd84da8e3bf32c1389b17a5
MD5 hash:
e0d19b7c560445d5705a07cc9421da0b
SHA1 hash:
9ae7711149b97ce3c93b746c71e91d8edd3fc704
Link:
https://www.unpac.me/results/8169ca4a-c426-42de-b446-c92df076d1cc/
SH256 hash:
cc67a587a9df9880b0223c643d4939969420c1909bfcb359d0ddc67dc3a9021b
MD5 hash:
a358df5ea49edf0faab72cbcf4a48e35
SHA1 hash:
305cc0949567292b03e06e27a1e8b17f0b3e72b9
Link:
https://www.unpac.me/results/8169ca4a-c426-42de-b446-c92df076d1cc/
SH256 hash:
a3b82e2d17f660c450ba4dae95a26b906f12626462a4bb9a6c2833071dd9faf5
MD5 hash:
cf3241f04cc546fa617566e84b5c1793
SHA1 hash:
0b9cbe0c45fba268857e11ad4d71105193c19d02
Link:
https://www.unpac.me/results/8169ca4a-c426-42de-b446-c92df076d1cc/
SH256 hash:
5f7e634c3e7e703beb1aff63e044e119060770a78e5e475623bdb4412b72abd2
MD5 hash:
52b845aced1e9e909338ae049d85a400
SHA1 hash:
082461a36d7acf1362cd8755a50d400575deb764
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/8169ca4a-c426-42de-b446-c92df076d1cc/
Parent samples :
c0b13c8cf91f75fb3ae9448b92656ccf90dbf374855d10add7d8a972bdc5d5b4
70543b4c967b3f474e895b299d778cd3b64e321f654ec02f580ff2d3ad7813e6
11db56471fe5f1c245d9fa8f6cfb9a86bd2aeb444c38cfd1c8ef159ec539c065
d973dd4c64c7534cceca0abcd0781742364ea652c6abcbe8206977345b738a57
2400e5356331123e2b6f8f27c824c7850acf55c92ba6554c81883b9dc94570d5
efbde8c3fc0f8f18b6b2c93fae4c7aaaa137f866a9d112ebdc534b8477485261
3dbe769bb2675de3bada40f257ce820b7356c2acb79bb3d4509d145fc9150772
SH256 hash:
c0b13c8cf91f75fb3ae9448b92656ccf90dbf374855d10add7d8a972bdc5d5b4
MD5 hash:
fd93188a0049f56a08e111b0dd4da4fc
SHA1 hash:
8720834732644f7f964767532504dd19321a0cf3
Link:
https://www.unpac.me/results/8169ca4a-c426-42de-b446-c92df076d1cc/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/c0b13c8cf91f/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/c0b13c8cf91f75fb3ae9448b92656ccf90dbf374855d10add7d8a972bdc5d5b4

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 c0b13c8cf91f75fb3ae9448b92656ccf90dbf374855d10add7d8a972bdc5d5b4

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/474987/

Comments