MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 755c5cfdaf13b6a255c3b2015da23ce5e634b0e896e13a95b7fe0a97389c8f0d. 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: 755c5cfdaf13b6a255c3b2015da23ce5e634b0e896e13a95b7fe0a97389c8f0d
SHA3-384 hash: 24aab9c604aff7a2856477f712188b65959462c34d8cf38675c94053c72fb709cbc1e0576f465deeae3148387340884d
SHA1 hash: 6b72c05c858b10ec9c3320427e965fc8b7a105b6
MD5 hash: 77e6cc7bad97936c7b94728c52d2b32d
humanhash: cardinal-alaska-gee-west
File name:FAT098900098789.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:527'696 bytes
First seen:2023-05-29 10:13:17 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 61259b55b8912888e90f516ca08dc514 (1'059 x Formbook, 741 x AgentTesla, 427 x GuLoader)
ssdeep 12288:ZYC6phcxu+g2yjk91gBoU1Pn1CECdtd19hrsAj+qsASR:ZYZpmO2yjk9aBRfzCfd1frKNR
Threatray 1'950 similar samples on MalwareBazaar
TLSH T195B4232696F1DD5BC8670E331CBF96286A70B723209169070722AF553C63192DB1FBB7
TrID 47.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
15.9% (.EXE) Win64 Executable (generic) (10523/12/4)
9.9% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
7.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
6.8% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon 64f4d4d4ecf4d4d4 (82 x SnakeKeylogger, 34 x AgentTesla, 24 x Formbook)
Reporter Anonymous
Tags:exe RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
278
Origin country :
PL PL
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
FAT098900098789.exe
Verdict:
Malicious activity
Analysis date:
2023-05-29 10:13:46 UTC
Tags:
rat remcos keylogger
Link:
https://app.any.run/tasks/35db2027-9169-426d-b85c-ff2ee6411546

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/393030/
Detection(s):
Sanesecurity.Malware.28885.BadCo.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Creating a window
Creating a file
Creating a file in the %AppData% subdirectories
Unauthorized injection to a recently created process
Сreating synchronization primitives
Setting a keyboard event handler
DNS request
Sending an HTTP GET request
Sending a custom TCP request
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Sending a TCP request to an infection source
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/88482/overview
Behaviour
MalwareBazaar
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
lolbin overlay packed remcos shell32.dll
Link:
https://www.filescan.io/uploads/64747b296c1bede1b67e209d/reports/1956d824-5dc6-4d66-bb90-104fb4979ace/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/755c5cfdaf13b6a255c3b2015da23ce5e634b0e896e13a95b7fe0a97389c8f0d
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/de6c0e35-ffc7-4242-ac67-ea4a0cf9313a
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1244399
Signature
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 steal Chrome passwords or cookies
Contains functionality to steal Firefox passwords or cookies
Delayed program exit found
Detected unpacking (changes PE section rights)
Detected unpacking (overwrites its own PE header)
Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors)
Found malware configuration
Installs a global keyboard hook
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: Remcos
Snort IDS alert for network traffic
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 877409 Sample: FAT098900098789.exe Startdate: 29/05/2023 Architecture: WINDOWS Score: 100 39 Snort IDS alert for network traffic 2->39 41 Found malware configuration 2->41 43 Malicious sample detected (through community Yara rule) 2->43 45 7 other signatures 2->45 6 FAT098900098789.exe 1 21 2->6         started        10 mmvrbbkgg.exe 19 2->10         started        12 mmvrbbkgg.exe 19 2->12         started        process3 file4 23 C:\Users\user\AppData\...\mmvrbbkgg.exe, PE32 6->23 dropped 25 C:\Users\user\AppData\Local\...\blvitae.dll, PE32 6->25 dropped 47 Contains functionality to bypass UAC (CMSTPLUA) 6->47 49 Detected unpacking (changes PE section rights) 6->49 51 Detected unpacking (overwrites its own PE header) 6->51 61 4 other signatures 6->61 14 FAT098900098789.exe 3 16 6->14         started        27 C:\Users\user\AppData\Local\...\blvitae.dll, PE32 10->27 dropped 53 Multi AV Scanner detection for dropped file 10->53 55 Machine Learning detection for dropped file 10->55 57 Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors) 10->57 19 mmvrbbkgg.exe 10->19         started        29 C:\Users\user\AppData\Local\...\blvitae.dll, PE32 12->29 dropped 59 Maps a DLL or memory area into another process 12->59 21 mmvrbbkgg.exe 12->21         started        signatures5 process6 dnsIp7 33 208.67.107.123, 49700, 8780 GRAYSON-COLLIN-COMMUNICATIONSUS United States 14->33 35 geoplugin.net 178.237.33.50, 49701, 80 ATOM86-ASATOM86NL Netherlands 14->35 31 C:\ProgramData\remcos\logs.dat, data 14->31 dropped 37 Installs a global keyboard hook 14->37 file8 signatures9
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/755c5cfdaf13b6a255c3b2015da23ce5e634b0e896e13a95b7fe0a97389c8f0d/
Threat name:
Win32.Trojan.Remcos
Create hunting rule
Status:
Malicious
First seen:
2023-05-29 07:47:59 UTC
File Type:
PE (Exe)
Extracted files:
3
AV detection:
22 of 36 (61.11%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ovofz7npco3kevodwiav3ir44xtdjmhis3qtvfnx7yfjooe4r4gq._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
0ac9f7546283cc6a26297dda1873c8162500e13ec67d10f036033488352fc026
RemcosRAT
1a925bac006fd8d7a5d58d0229eabe2e30634626731add96939b0ab542c446a5
RemcosRAT
3881f76b58969b36b12b7f8f60c2593bdf2e8671fa355e806669cebe9514cb34
RemcosRAT
5967b2774354c77c0fcba2c4e0551adce7f0836f7bbb7ec59efe8d7fbf5b1404
RemcosRAT
76005c1982c2d4df1995d8ba0e2163ac84b5009823466b9e043a5a017e15c9cd
RemcosRAT
c5b83cba12fc69072661e0c8d473ed6d4263580764f0ac0476e4306df3f71e64
RemcosRAT
df5481a99a394e2019c2665fa75f4b81bb4cf0afcd5b7c268ea6f01988ece3fc
RemcosRAT
+ 1'940 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/230529-l9mv7sbc45/
Behaviour
Suspicious behavior: MapViewOfSection
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
Remcos
Malware Config
C2 Extraction:
208.67.107.123:8780
Unpacked files
SH256 hash:
755c5cfdaf13b6a255c3b2015da23ce5e634b0e896e13a95b7fe0a97389c8f0d
MD5 hash:
77e6cc7bad97936c7b94728c52d2b32d
SHA1 hash:
6b72c05c858b10ec9c3320427e965fc8b7a105b6
Link:
https://www.unpac.me/results/a52d6744-1656-4bf3-9aad-d67ce79e4ac5/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/755c5cfdaf13/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Remcos
Score:
0.90
Link:
https://yomi.yoroi.company/submissions/755c5cfdaf13b6a255c3b2015da23ce5e634b0e896e13a95b7fe0a97389c8f0d

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: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:Remcos
Create hunting rule
Author:kevoreilly
Description:Remcos Payload
Rule name:REMCOS_RAT_variants
Create hunting rule
Rule name:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns
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.

File information

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

Cape
Cape
https://www.capesandbox.com/analysis/393030/

Comments