MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 e4158c10a661df5f16c7db4b26db25c8b354a625364c2834eea6203e80c1017c. 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: 10


Intelligence 10 IOCs YARA 9 File information Comments
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SHA256 hash: e4158c10a661df5f16c7db4b26db25c8b354a625364c2834eea6203e80c1017c
SHA3-384 hash: bec132011d3e0382cab81088749a1918ddde0921d89a5ac523c3470146b6ba6613a21118c832a3a7a4fd45893050d099
SHA1 hash: 3d6071f1dd014a8f32ea4c1dc7c9b10a818b6396
MD5 hash: ea7b0825c3e8b1d7bd888b775f6070e6
humanhash: colorado-fruit-alanine-jig
File name:PurchaseOrder_2021676777.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:785'408 bytes
First seen:2021-03-04 15:25:32 UTC
Last seen:2021-03-04 16:38:31 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'657 x AgentTesla, 19'468 x Formbook, 12'206 x SnakeKeylogger)
ssdeep 12288:2gF69phJ4ITh0+p/EGqdn0AAZq0zcPnJRzCR7X4X3tT0qT0RS:BcbBp/EG6/Opwv+tXMtoqoRS
TLSH 94F4C0213BB8AB58F436EB3906E0B044A7FDE512E716D64F3CE516CE4712E84CEA3525
Reporter abuse_ch
Tags:exe RAT RemcosRAT


Avatar
abuse_ch
Malspam distributing RemcosRAT:

HELO: jetmails.uno
Sending IP: 103.109.37.153
From: CONNFLY<admin@jetmails.uno>
Subject: CONNFLY - March 2021 Requisitions
Attachment: PurchaseOrder_2021676777.zip (contains "PurchaseOrder_2021676777.exe")

RemcosRAT C2:
grace111.ddns.net

Intelligence

File Origin
# of uploads :
2
# of downloads :
149
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
PurchaseOrder_2021676777.exe
Verdict:
Suspicious activity
Analysis date:
2021-03-04 15:33:15 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/5057ccc9-e19b-402d-8905-531de0fc750f

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/122294/
Detection(s):
SecuriteInfo.com.Trojan.Win32.Save.a.25029.32748.UNOFFICIAL
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Result
Verdict:
SUSPICIOUS
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/628780
Signature
.NET source code contains very large strings
C2 URLs / IPs found in malware configuration
Contains functionality to capture and log keystrokes
Contains functionality to inject code into remote processes
Contains functionality to steal Chrome passwords or cookies
Contains functionality to steal Firefox passwords or cookies
Detected Remcos RAT
Found malware configuration
Initial sample is a PE file and has a suspicious name
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Sigma detected: Remcos
Sigma detected: Scheduled temp file as task from temp location
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses dynamic DNS services
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM_3
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 363366 Sample: PurchaseOrder_2021676777.exe Startdate: 04/03/2021 Architecture: WINDOWS Score: 100 32 grace111.ddns.net 2->32 38 Found malware configuration 2->38 40 Malicious sample detected (through community Yara rule) 2->40 42 Sigma detected: Scheduled temp file as task from temp location 2->42 44 12 other signatures 2->44 8 PurchaseOrder_2021676777.exe 7 2->8         started        signatures3 process4 file5 22 C:\Users\user\AppData\...\jxQFFtFROyhOs.exe, PE32 8->22 dropped 24 C:\...\jxQFFtFROyhOs.exe:Zone.Identifier, ASCII 8->24 dropped 26 C:\Users\user\AppData\Local\...\tmpD41A.tmp, XML 8->26 dropped 28 C:\Users\...\PurchaseOrder_2021676777.exe.log, ASCII 8->28 dropped 46 Contains functionality to steal Chrome passwords or cookies 8->46 48 Contains functionality to capture and log keystrokes 8->48 50 Contains functionality to inject code into remote processes 8->50 52 Contains functionality to steal Firefox passwords or cookies 8->52 12 PurchaseOrder_2021676777.exe 2 3 8->12         started        16 schtasks.exe 1 8->16         started        18 PurchaseOrder_2021676777.exe 8->18         started        signatures6 process7 dnsIp8 34 grace111.ddns.net 185.19.85.141, 1471, 49719, 49720 DATAWIRE-ASCH Switzerland 12->34 36 192.168.2.1 unknown unknown 12->36 30 C:\Users\user\AppData\Roaming\...\logs.dat, ASCII 12->30 dropped 20 conhost.exe 16->20         started        file9 process10
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/e4158c10a661df5f16c7db4b26db25c8b354a625364c2834eea6203e80c1017c/
Threat name:
Win32.Trojan.RemcosRAT
Create hunting rule
Status:
Malicious
First seen:
2021-03-04 14:53:00 UTC
File Type:
PE (.Net Exe)
Extracted files:
45
AV detection:
19 of 47 (40.43%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=4qkyyefgmhpv6fwh3nfsnwzfzczvjjrfgzgcqnhouyqd5agbaf6a._file
Verdict:
unknown
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos rat
Link:
https://tria.ge/reports/210304-by55ttrdzn/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Creates scheduled task(s)
Enumerates physical storage devices
Suspicious use of SetThreadContext
Remcos
Malware Config
C2 Extraction:
grace111.ddns.net:1471
Unpacked files
SH256 hash:
f9d949d2f56c449c5d346bb93ed04d38426f563b022dd179ae330dab46682c3b
MD5 hash:
871e23d748ba756eaab5777708f250f8
SHA1 hash:
c9816d4ab38541aaab9aa3eab7cb4898d0b72e4a
Link:
https://www.unpac.me/results/9a958b7c-bb08-4800-9165-3f306473f51f/
SH256 hash:
e4158c10a661df5f16c7db4b26db25c8b354a625364c2834eea6203e80c1017c
MD5 hash:
ea7b0825c3e8b1d7bd888b775f6070e6
SHA1 hash:
3d6071f1dd014a8f32ea4c1dc7c9b10a818b6396
Link:
https://www.unpac.me/results/9a958b7c-bb08-4800-9165-3f306473f51f/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.65
Link:
https://yomi.yoroi.company/submissions/e4158c10a661df5f16c7db4b26db25c8b354a625364c2834eea6203e80c1017c

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:ach_RemcosRAT
Create hunting rule
Author:abuse.ch
Rule name:Chrome_stealer_bin_mem
Create hunting rule
Author:James_inthe_box
Description:Chrome in files like avemaria
Rule name:INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
Create hunting rule
Author:ditekSHen
Description:detects Windows exceutables potentially bypassing UAC using eventvwr.exe
Rule name:Keylog_bin_mem
Create hunting rule
Author:James_inthe_box
Description:Contains Keylog
Rule name:Parallax
Create hunting rule
Author:@bartblaze
Description:Identifies Parallax RAT.
Rule name:Remcos
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Remcos in memory
Rule name:remcos_rat
Create hunting rule
Author:jeFF0Falltrades
Rule name:REMCOS_RAT_variants
Create hunting rule
Rule name:win_remcos_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:autogenerated rule brought to you by yara-signator

File information

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

Malspam

RemcosRAT

zip ce017a03e71e8121a53b848e8fb3bdfbe96d03e68ee9baa1eb77e9a1357932bb

RemcosRAT

Executable exe e4158c10a661df5f16c7db4b26db25c8b354a625364c2834eea6203e80c1017c

(this sample)

  
Dropped by
MD5 ee654c8cf7c147ff8049d329a4019e84
  
Delivery method
Distributed via e-mail attachment
  
Dropped by
SHA256 ce017a03e71e8121a53b848e8fb3bdfbe96d03e68ee9baa1eb77e9a1357932bb
Cape
Cape
https://www.capesandbox.com/analysis/122294/

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