MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 777b1fcf106f094c989933f56d47f1c411be0382ebf7c5836c2c64399b0bbe73. 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: 777b1fcf106f094c989933f56d47f1c411be0382ebf7c5836c2c64399b0bbe73
SHA3-384 hash: 66dc517bc2f9f8324fa35dfd03ab29808c54d4ca7df428f5a6c5a82a134a210c169131a948703a997f8daea009af06f2
SHA1 hash: 7bec687c3e9ad25fc2c038ef7fbaf1d0b1e05f7b
MD5 hash: d3a2dc4479967bafb3d2b796cdfb6cda
humanhash: undress-table-lactose-equal
File name:SOA FROM UNIBEST--JAN 2023.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:506'511 bytes
First seen:2023-02-21 14:12:40 UTC
Last seen:2023-02-21 15:29:29 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 61259b55b8912888e90f516ca08dc514 (1'059 x Formbook, 741 x AgentTesla, 431 x GuLoader)
ssdeep 12288:/YrFaibfQwXaItQ7XWADVmMQZY2gudvaRosfL1N+GyignxA6jekfmn2A:/YrYibVaISFpmhY2NaisziGvjE6Z
Threatray 2'681 similar samples on MalwareBazaar
TLSH T143B42304B7848E73ED7707752E294E0F7BB955362A81520FC3804EE9B836A84B32F316
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 b2a89c96a2cada72 (2'283 x Formbook, 981 x Loki, 803 x AgentTesla)
Reporter abuse_ch
Tags:exe RAT RemcosRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
237
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
SOA FROM UNIBEST--JAN 2023.exe
Verdict:
Malicious activity
Analysis date:
2023-02-21 14:17:55 UTC
Tags:
rat remcos
Link:
https://app.any.run/tasks/c9258af6-d194-4806-94bd-0f5854b5820e

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/368661/
Detection(s):
SecuriteInfo.com.Trojan.NSISX.Spy.Gen.24.29339.19853.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Creating a window
Creating a process from a recently created file
Creating a file in the %AppData% subdirectories
Сreating synchronization primitives
Searching for the window
Sending a custom TCP request
DNS request
Sending an HTTP GET request
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/71974/overview
Behaviour
MalwareBazaar
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
overlay packed shell32.dll
Link:
https://www.filescan.io/uploads/63f4d1705741abdfaa9d6da3/reports/9fb274c1-2b2b-4c89-80fb-d1ab6673a07c/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/777b1fcf106f094c989933f56d47f1c411be0382ebf7c5836c2c64399b0bbe73
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.
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/3dca17ed-22ab-408f-b96f-1dd333a07f58
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1179807
Signature
C2 URLs / IPs found in malware configuration
Contains functionality to bypass UAC (CMSTPLUA)
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)
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 submitted file
Sigma detected: Remcos
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 812639 Sample: SOA FROM UNIBEST--JAN 2023.exe Startdate: 21/02/2023 Architecture: WINDOWS Score: 100 39 Malicious sample detected (through community Yara rule) 2->39 41 Multi AV Scanner detection for submitted file 2->41 43 Yara detected UAC Bypass using CMSTP 2->43 45 4 other signatures 2->45 7 SOA FROM UNIBEST--JAN 2023.exe 19 2->7         started        10 wsclhqmvfbktpy.exe 1 2->10         started        12 wsclhqmvfbktpy.exe 1 2->12         started        process3 file4 31 C:\Users\user\AppData\Local\...\tjoxzzl.exe, PE32 7->31 dropped 14 tjoxzzl.exe 1 3 7->14         started        18 WerFault.exe 4 10 10->18         started        20 conhost.exe 10->20         started        22 WerFault.exe 10 12->22         started        24 conhost.exe 12->24         started        process5 file6 33 C:\Users\user\AppData\...\wsclhqmvfbktpy.exe, PE32 14->33 dropped 47 Contains functionality to bypass UAC (CMSTPLUA) 14->47 49 Detected unpacking (changes PE section rights) 14->49 51 Detected unpacking (overwrites its own PE header) 14->51 53 4 other signatures 14->53 26 tjoxzzl.exe 2 14 14->26         started        29 conhost.exe 14->29         started        signatures7 process8 dnsIp9 35 89.37.99.49, 49711, 5888 BANDWIDTH-ASGB Romania 26->35 37 geoplugin.net 178.237.33.50, 49712, 80 ATOM86-ASATOM86NL Netherlands 26->37
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/777b1fcf106f094c989933f56d47f1c411be0382ebf7c5836c2c64399b0bbe73/
Threat name:
Win32.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2023-02-21 09:23:28 UTC
File Type:
PE (Exe)
Extracted files:
3
AV detection:
22 of 25 (88.00%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=o55r7tyqn4euzgezgp2w2r7ryqi34a4c5p34la3mfrsdtgylxzzq._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
08c829e7056b8e022539076acbc962dea072e6506184d4036b785cb0e4592371
RemcosRAT
1cdd50cbdf51d44354d596e4a1f8a3fee6268362ffdce61b608322bba56ebdb0
RemcosRAT
25ba7b40ff6921b6590360a905d4389e799e0fc9f69f131f8ec21611482cde82
RemcosRAT
4d8144373754035a1f2efa73853ee424d7f69bdd1b8c0cd97426d25733f00ed7
RemcosRAT
62f4359aef9d0d604c03c099da375debd0d98f20cf4f673a5a32bd64989076ca
RemcosRAT
6a5446fa6f015bc8b3b2019966b23272d9309dbae8c12bc16a9e66bc9577481d
RemcosRAT
7a4d0d31bb0250759bfcc1c939db0df5c90e55dc5a17510552e0a273d88dbee8
RemcosRAT
e0bf2af1713abe4f3c276ff977a8405ad655b4cf43def74cea14b06540d5ca00
RemcosRAT
+ 2'671 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/230221-rjed2afa62/
Behaviour
Suspicious behavior: MapViewOfSection
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Adds Run key to start application
Executes dropped EXE
Loads dropped DLL
Remcos
Malware Config
C2 Extraction:
89.37.99.49:5888
Unpacked files
SH256 hash:
1827b61000b50516367ea82806f6061d0c006451ffd3810afe78c069fbc173f4
MD5 hash:
bc0f39d72e6d2799dec22bfb9f8532d4
SHA1 hash:
ff7115405c37fef6ecaab1dafcc296905424dd45
Detections:
Remcos
Create hunting rule
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/fe7ef469-fc4a-4b3b-93a5-048e55da9ba0/
Parent samples :
777b1fcf106f094c989933f56d47f1c411be0382ebf7c5836c2c64399b0bbe73
284232020b34f4cf7a8fc750b17821055f93426351f8450654141a5ee1326798
SH256 hash:
4d5c11b4bc3538107374a00dd8be487e4a1ed191d27f1e6b8bebea90539eaf89
MD5 hash:
746a5aa0869777ca8cabbe475cc6631e
SHA1 hash:
3beafb338a7c401a434e4bc1c45d0f66e4a1030e
Link:
https://www.unpac.me/results/fe7ef469-fc4a-4b3b-93a5-048e55da9ba0/
SH256 hash:
777b1fcf106f094c989933f56d47f1c411be0382ebf7c5836c2c64399b0bbe73
MD5 hash:
d3a2dc4479967bafb3d2b796cdfb6cda
SHA1 hash:
7bec687c3e9ad25fc2c038ef7fbaf1d0b1e05f7b
Link:
https://www.unpac.me/results/fe7ef469-fc4a-4b3b-93a5-048e55da9ba0/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/777b1fcf106f/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/777b1fcf106f094c989933f56d47f1c411be0382ebf7c5836c2c64399b0bbe73

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/368661/

Comments