MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4e94b723292987a2ee01a5e4ee5721a5ef99c8c3c416c94146804b5385c0f3a4. 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: 16


Intelligence 16 IOCs YARA 4 File information Comments
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SHA256 hash: 4e94b723292987a2ee01a5e4ee5721a5ef99c8c3c416c94146804b5385c0f3a4
SHA3-384 hash: c77311cdd14063959adb6400d9f7647afbcec9d00bee25fc27cdd8f4bd8360d0a3c0df20a85c85ef6f1ba2abad0cddcb
SHA1 hash: dff2beb68300e122547351a0ddad492eef4a22e0
MD5 hash: 97ff322fac5ace537907d0f3831ba2be
humanhash: johnny-moon-coffee-social
File name:Bklbpnn.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:939'520 bytes
First seen:2023-02-14 07:22:18 UTC
Last seen:2023-02-14 08:33:15 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 24576:4uqH04zaDQ/fJKlDHh3b7dNbzZtUv6VDA5PApwmFt75qN4W+sd3PQUxtX:yEa
Threatray 2'351 similar samples on MalwareBazaar
TLSH T1D7155B3203437E99977B1E8AF54526224CB4BE57470AC138BEDA3AF43A7711CBD194B8
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) (4505/5/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
File icon (PE):PE icon
dhash icon 00870d1848c4cc20 (27 x RemcosRAT, 6 x Formbook, 1 x NanoCore)
Reporter lowmal3
Tags:exe RemcosRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
207
Origin country :
DE DE
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
Bklbpnn.exe
Verdict:
Malicious activity
Analysis date:
2023-02-14 07:25:35 UTC
Tags:
trojan rat remcos
Link:
https://app.any.run/tasks/294274aa-163b-4719-b757-809861b07cce

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/365468/
Detection(s):
SecuriteInfo.com.Heur.MSIL.Androm.9.19176.30852.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Сreating synchronization primitives
Launching a process
Creating a process with a hidden window
Sending a custom TCP request
Running batch commands
Creating a file in the %AppData% subdirectories
Unauthorized injection to a recently created process
Creating a file
DNS request
Using the Windows Management Instrumentation requests
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Gathering data
Verdict:
Malicious
Labled as:
MSIL.Androm.Generic
Link:
https://www.hybrid-analysis.com/sample/4e94b723292987a2ee01a5e4ee5721a5ef99c8c3c416c94146804b5385c0f3a4
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/f8831ae0-7bb2-460b-a56c-2ae3e5ccd100
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1174137
Signature
.NET source code contains potential unpacker
C2 URLs / IPs found in malware configuration
Detected Remcos RAT
Encrypted powershell cmdline option found
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sample uses process hollowing technique
Sigma detected: Remcos
Snort IDS alert for network traffic
Uses dynamic DNS services
Yara detected Costura Assembly Loader
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 806927 Sample: Bklbpnn.exe Startdate: 14/02/2023 Architecture: WINDOWS Score: 100 53 Snort IDS alert for network traffic 2->53 55 Multi AV Scanner detection for domain / URL 2->55 57 Malicious sample detected (through community Yara rule) 2->57 59 9 other signatures 2->59 7 Bklbpnn.exe 1 7 2->7         started        11 Bjmnhzewb.exe 4 2->11         started        13 Bjmnhzewb.exe 3 2->13         started        process3 file4 45 C:\Users\user\AppData\...\Bjmnhzewb.exe, PE32 7->45 dropped 47 C:\Users\...\Bjmnhzewb.exe:Zone.Identifier, ASCII 7->47 dropped 49 C:\Users\user\AppData\...\Bklbpnn.exe.log, ASCII 7->49 dropped 61 Encrypted powershell cmdline option found 7->61 15 cmd.exe 1 7->15         started        18 Bklbpnn.exe 2 7->18         started        21 powershell.exe 16 7->21         started        23 Bklbpnn.exe 7->23         started        63 Multi AV Scanner detection for dropped file 11->63 65 Machine Learning detection for dropped file 11->65 67 Sample uses process hollowing technique 11->67 25 powershell.exe 11->25         started        27 Bjmnhzewb.exe 11->27         started        29 Bjmnhzewb.exe 11->29         started        31 powershell.exe 13->31         started        33 Bjmnhzewb.exe 13->33         started        signatures5 process6 dnsIp7 69 Encrypted powershell cmdline option found 15->69 35 powershell.exe 21 15->35         started        37 conhost.exe 15->37         started        51 staywoke.ddns.net 171.22.30.122, 2406, 49695, 49696 CMCSUS Germany 18->51 39 conhost.exe 21->39         started        41 conhost.exe 25->41         started        43 conhost.exe 31->43         started        signatures8 process9
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/4e94b723292987a2ee01a5e4ee5721a5ef99c8c3c416c94146804b5385c0f3a4/
Threat name:
ByteCode-MSIL.Backdoor.Androm
Create hunting rule
Status:
Malicious
First seen:
2023-02-14 05:29:18 UTC
File Type:
PE (.Net Exe)
Extracted files:
5
AV detection:
14 of 39 (35.90%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=j2kloizjfgd2f3qbuxso4vzbuxxztsgdyqlmsqkgqbfvhboa6osa._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
02d7ab6afcf9f15fba169e0d8491499cf27a87fba17a3afd80bd6e5873a9338f
RemcosRAT
34ff7d92c1c335d251ad12780ccc8fb3a10430fc20cfbb0ff55c40128ffe9a81
RemcosRAT
43833d212601474a32c2ea1f5920850c4011bec08a3c2df565231f87043a8318
RemcosRAT
d828a844f0248f23b180fe4810ac43f49168e2c232f6874b0c33e411586dd4f4
RemcosRAT
de680087d48c2789463444d87dc09962e29effc2491d398d713931ac62cf4e1b
RemcosRAT
f6da498dfc065eb4123c6001d35e387d9591e5ca80908e92285c5dc73a27fa1c
RemcosRAT
+ 2'341 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:ossy persistence rat
Link:
https://tria.ge/reports/230214-h7tdesba21/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Adds Run key to start application
Checks computer location settings
Remcos
Malware Config
C2 Extraction:
staywoke.ddns.net:2406
Unpacked files
SH256 hash:
1917943183ddfc39a74bfbc173da58cba8a9aeae444a49a8d3b256d21fa6f068
MD5 hash:
946b42649ca9f4777783e2ede9dcf56c
SHA1 hash:
8ad73c3bfb653595db939ee5cc46637ad372e32e
Detections:
Remcos
Create hunting rule
win_remcos_auto
Create hunting rule
win_remcos_g0
Create hunting rule
Link:
https://www.unpac.me/results/5f5fdd44-4abc-4c9d-a2d6-c0526e626eb6/
SH256 hash:
a8d101bcaab1f93dc8c26deb6fd1537e29342db9cc25df5cf2447199450c8e6d
MD5 hash:
12a9025ce04c9fb8fc691ffda7020549
SHA1 hash:
30c401fa11667dd97a8e23ad159f668480eb4aae
Link:
https://www.unpac.me/results/5f5fdd44-4abc-4c9d-a2d6-c0526e626eb6/
SH256 hash:
4e94b723292987a2ee01a5e4ee5721a5ef99c8c3c416c94146804b5385c0f3a4
MD5 hash:
97ff322fac5ace537907d0f3831ba2be
SHA1 hash:
dff2beb68300e122547351a0ddad492eef4a22e0
Link:
https://www.unpac.me/results/5f5fdd44-4abc-4c9d-a2d6-c0526e626eb6/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/4e94b7232929/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/4e94b723292987a2ee01a5e4ee5721a5ef99c8c3c416c94146804b5385c0f3a4

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:BitcoinAddress
Create hunting rule
Author:Didier Stevens (@DidierStevens)
Description:Contains a valid Bitcoin address
Rule name:INDICATOR_EXE_Packed_SmartAssembly
Create hunting rule
Author:ditekSHen
Description:Detects executables packed with SmartAssembly
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

File information

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

Malspam

RemcosRAT

Executable exe 4e94b723292987a2ee01a5e4ee5721a5ef99c8c3c416c94146804b5385c0f3a4

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/365468/

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