MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 71413583e55230a0a3a659cae17e5a23da5db0b660ed850b268c16680945995a. 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: 71413583e55230a0a3a659cae17e5a23da5db0b660ed850b268c16680945995a
SHA3-384 hash: 72105d5cfb8e13d1737794ccf1ba51f73b8f13ab42a76ec9dd304c48e3ad53356f3d8d5e9227016aa8b18315f17f5e2f
SHA1 hash: c8c31585e6ea8be494e32e8ec8612c15b7932926
MD5 hash: e6b3eb241507bd5a46a1b854f5ab8941
humanhash: october-kentucky-mango-hawaii
File name:doc2023021700999000001.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:553'924 bytes
First seen:2023-02-18 07:43:56 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 61259b55b8912888e90f516ca08dc514 (1'059 x Formbook, 741 x AgentTesla, 429 x GuLoader)
ssdeep 12288:+YWonBCpwvU26uMJYyhqWg3Z/zKpDh2mKb27HpndKS+w8J:+YWWjnC/1gJ/zKjzpndY
Threatray 2'668 similar samples on MalwareBazaar
TLSH T1B5C422C421B0C8AFE29507B57A6396629AF0DC8369B4076797503D03FD64923EB0EB23
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 70f8f2f2d6d469b2 (3 x SnakeKeylogger, 1 x RemcosRAT)
Reporter abuse_ch
Tags:exe RAT RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
171
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
doc2023021700999000001.exe
Verdict:
Malicious activity
Analysis date:
2023-02-18 07:50:57 UTC
Tags:
rat remcos keylogger
Link:
https://app.any.run/tasks/905c76d5-8e7f-43c7-b323-0a249278a674

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/367849/
Detection(s):
SecuriteInfo.com.Win32.InjectorX-gen.18944.24223.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
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
Setting a keyboard event handler
DNS request
Sending a custom TCP request
Sending an HTTP GET request
Creating a file
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
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/71436/overview
Behaviour
MalwareBazaar
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
67%
Tags:
overlay packed shell32.dll
Link:
https://www.filescan.io/uploads/63f081c4148bf92327e1b18c/reports/2aceab3d-f17d-4ef7-8167-8e049166af98/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/71413583e55230a0a3a659cae17e5a23da5db0b660ed850b268c16680945995a
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/356a1508-f279-4f20-a269-a60ef12bddcd
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
rans.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1178380
Signature
Antivirus detection for URL or domain
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
Contains functionalty to change the wallpaper
Delayed program exit found
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 domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Remcos
Uses dynamic DNS services
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 811203 Sample: doc2023021700999000001.exe Startdate: 18/02/2023 Architecture: WINDOWS Score: 100 46 Multi AV Scanner detection for domain / URL 2->46 48 Malicious sample detected (through community Yara rule) 2->48 50 Antivirus detection for URL or domain 2->50 52 7 other signatures 2->52 7 doc2023021700999000001.exe 19 2->7         started        10 oavjueokn.exe 2->10         started        13 oavjueokn.exe 2->13         started        process3 file4 28 C:\Users\user\AppData\Local\...\gfgfexoxx.exe, PE32 7->28 dropped 15 gfgfexoxx.exe 1 2 7->15         started        56 Multi AV Scanner detection for dropped file 10->56 58 Machine Learning detection for dropped file 10->58 19 WerFault.exe 10 10->19         started        21 WerFault.exe 4 10 13->21         started        signatures5 process6 file7 32 C:\Users\user\AppData\...\oavjueokn.exe, PE32 15->32 dropped 38 Multi AV Scanner detection for dropped file 15->38 40 Contains functionality to bypass UAC (CMSTPLUA) 15->40 42 Contains functionalty to change the wallpaper 15->42 44 5 other signatures 15->44 23 gfgfexoxx.exe 2 17 15->23         started        signatures8 process9 dnsIp10 34 report1.duckdns.org 195.3.223.117, 49691, 5890 PL-SKYTECH-ASPL Poland 23->34 36 geoplugin.net 178.237.33.50, 49692, 80 ATOM86-ASATOM86NL Netherlands 23->36 30 C:\ProgramData\remcos\logs.dat, data 23->30 dropped 54 Installs a global keyboard hook 23->54 file11 signatures12
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/71413583e55230a0a3a659cae17e5a23da5db0b660ed850b268c16680945995a/
Threat name:
Win32.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2023-02-17 09:57:44 UTC
File Type:
PE (Exe)
Extracted files:
4
AV detection:
20 of 25 (80.00%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=ofatla7fkiykbi5glhfoc7s2epnf3mfwmdwykczgrqlgqckftfna._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
1cdd50cbdf51d44354d596e4a1f8a3fee6268362ffdce61b608322bba56ebdb0
RemcosRAT
4d8144373754035a1f2efa73853ee424d7f69bdd1b8c0cd97426d25733f00ed7
RemcosRAT
62f4359aef9d0d604c03c099da375debd0d98f20cf4f673a5a32bd64989076ca
RemcosRAT
6a5446fa6f015bc8b3b2019966b23272d9309dbae8c12bc16a9e66bc9577481d
RemcosRAT
71413583e55230a0a3a659cae17e5a23da5db0b660ed850b268c16680945995a
RemcosRAT
76005c1982c2d4df1995d8ba0e2163ac84b5009823466b9e043a5a017e15c9cd
RemcosRAT
7a4d0d31bb0250759bfcc1c939db0df5c90e55dc5a17510552e0a273d88dbee8
RemcosRAT
8453736e80df77744f2e82871bbfd9dcc62f166f5ed37e3f9e1e01a98bcef6e4
RemcosRAT
a4da37e92ca54c8851ad144fba875b61e2018f69bbe43b11926d8f8d831b56f0
RemcosRAT
e0bf2af1713abe4f3c276ff977a8405ad655b4cf43def74cea14b06540d5ca00
RemcosRAT
+ 2'658 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/230218-jktlcaag9t/
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
Executes dropped EXE
Loads dropped DLL
Remcos
Malware Config
C2 Extraction:
report1.duckdns.org:5890
Unpacked files
SH256 hash:
192fa0591be0213cf5eb86d3b70db863f8953e3bc1d555d456b51752cf8644a5
MD5 hash:
1cd3378b7a7b867038e7372f72eb219a
SHA1 hash:
6d8034b762d2828e51babe8e4a322f3a0bfa047a
Detections:
Remcos
Create hunting rule
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/b8fe41bc-c2e3-48c3-b39a-96db24cc8091/
Parent samples :
d735fd2abee0e57fd410a4d0978305703f8cfcb3b990e342df3b66d86a65d04d
7f957a63ff320cf43b53f9f8e7a11ffd327c12a63704cc7fdf11a9a1111ed8f7
4a2002d591a7957dbe2cc2a3b6a8e40ab667966497ddda2c8038ec58233b1fd9
e0bf2af1713abe4f3c276ff977a8405ad655b4cf43def74cea14b06540d5ca00
71413583e55230a0a3a659cae17e5a23da5db0b660ed850b268c16680945995a
25ba7b40ff6921b6590360a905d4389e799e0fc9f69f131f8ec21611482cde82
SH256 hash:
41846bc9b8c1e3e4484b296825199134bf5824ac4383ff15652092a5f88448ad
MD5 hash:
f6b381749cc2729c855992e2e9ba2cd3
SHA1 hash:
68c3ff392fae3eeee94f89adacc84a515dda9b91
Link:
https://www.unpac.me/results/b8fe41bc-c2e3-48c3-b39a-96db24cc8091/
SH256 hash:
71413583e55230a0a3a659cae17e5a23da5db0b660ed850b268c16680945995a
MD5 hash:
e6b3eb241507bd5a46a1b854f5ab8941
SHA1 hash:
c8c31585e6ea8be494e32e8ec8612c15b7932926
Link:
https://www.unpac.me/results/b8fe41bc-c2e3-48c3-b39a-96db24cc8091/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/71413583e552/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/71413583e55230a0a3a659cae17e5a23da5db0b660ed850b268c16680945995a

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/367849/

Comments