MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b621f1f8982275608b48ba66fb69fdc6a1dfd9292b9725daf5f45b25493c4680. 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


Epsilon


Vendor detections: 7


Intelligence 7 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b621f1f8982275608b48ba66fb69fdc6a1dfd9292b9725daf5f45b25493c4680
SHA3-384 hash: 19dfe4f0ff4cb86c9b66b41dccf52179036574c09a21c08aa83764263381a8c9787237efd3a11071bd134585eca5075f
SHA1 hash: f6ca84c12b4af6106dac8dfe2372cc6729c75e98
MD5 hash: 68e79d26e4276efb489cfe9f297b92a3
humanhash: delaware-queen-sodium-social
File name:ENVY-6542B-54.exe
Download: download sample
Signature Epsilon
Create hunting rule
File size:32'768 bytes
First seen:2021-01-28 08:58:31 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'600 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 768:n+JdkR7l/NWmbrbAHFJ073Ypeori9HNKHa:cWJ/fbrbo073YIoW9HNKHa
Threatray 93 similar samples on MalwareBazaar
TLSH D6E249267BE44232E5BA5F381EB392019B71FA17D936C64C7DCC108E1F7274489A2FA5
Reporter w00tw00t
Tags:Epsilon Ransomware

Intelligence

File Origin
# of uploads :
1
# of downloads :
203
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
ENVY-6542B-54.exe
Verdict:
Malicious activity
Analysis date:
2021-01-19 05:26:54 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/f056570c-9006-446d-8505-76b4762314a6

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/114212/
Detection(s):
Win.Malware.Ursu-9802322-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the Windows subdirectories
Launching a process
Creating a window
Changing a file
Setting a global event handler
Running batch commands
Creating a file
Creating a process from a recently created file
Using the Windows Management Instrumentation requests
Searching for the window
Forced system process termination
Sending a UDP request
Possible injection to a system process
Unauthorized injection to a recently created process
Launching a tool to kill processes
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Encrypting user's files
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.
Result
Threat name:
BooM Voidcrypt
Create hunting rule
Detection:
malicious
Classification:
rans.spre
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/592714
Signature
Antivirus / Scanner detection for submitted sample
Binary contains a suspicious time stamp
Creates an autostart registry key pointing to binary in C:\Windows
Deletes shadow drive data (may be related to ransomware)
Found ransom note / readme
Infects executable files (exe, dll, sys, html)
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Writes many files with high entropy
Yara detected BooM Ransomware
Yara detected Ransomware_Generic
Yara detected Voidcrypt Ransomware
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 345400 Sample: ENVY-6542B-54.exe Startdate: 28/01/2021 Architecture: WINDOWS Score: 100 52 Malicious sample detected (through community Yara rule) 2->52 54 Antivirus / Scanner detection for submitted sample 2->54 56 Multi AV Scanner detection for submitted file 2->56 58 7 other signatures 2->58 6 cmd.exe 1 2->6         started        8 bi5lrmkq.exe 2->8         started        12 ENVY-6542B-54.exe 5 2->12         started        14 2 other processes 2->14 process3 file4 16 bi5lrmkq.exe 1 2 6->16         started        20 conhost.exe 6->20         started        34 C:\Program Files (x86)\AutoIt3\...\Mice0.bmp, DOS 8->34 dropped 36 C:\Program Filesbehaviorgraphoogle\...\LogoBeta.png, data 8->36 dropped 38 C:\Program Filesbehaviorgraphoogle\Chrome\...\Logo.png, data 8->38 dropped 44 192 other files (191 malicious) 8->44 dropped 60 Infects executable files (exe, dll, sys, html) 8->60 40 C:\Windows\Temp\bi5lrmkq.exe, PE32 12->40 dropped 42 C:\Users\user\...NVY-6542B-54.exe.log, ASCII 12->42 dropped 22 cmstp.exe 8 7 12->22         started        24 conhost.exe 14->24         started        signatures5 process6 file7 26 C:\Users\...\CachedImage_1280_1024_POS4.jpg, data 16->26 dropped 28 C:\Users\user\AppData\...\SettingsCache.txt, data 16->28 dropped 30 C:\Users\...\AppCache132562981410360659.txt, data 16->30 dropped 32 220 other files (219 malicious) 16->32 dropped 46 Multi AV Scanner detection for dropped file 16->46 48 Creates an autostart registry key pointing to binary in C:\Windows 16->48 50 Writes many files with high entropy 16->50 signatures8
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b621f1f8982275608b48ba66fb69fdc6a1dfd9292b9725daf5f45b25493c4680/
Threat name:
ByteCode-MSIL.Ransomware.FileCoder
Create hunting rule
Status:
Malicious
First seen:
2021-01-17 18:32:00 UTC
AV detection:
26 of 28 (92.86%)
Threat level:
  5/5
Verdict:
suspicious
Similar samples:
1baac8b88ecc811192cf8c2a7c170153ad350646265225f0d4a0ac351a1f197a
Epsilon
3e9f05acde528ea5fd7ca9d0c2af0e82d29e343d2f61420290e6f660630cd25f
Epsilon
61198dcb525d78061585053ddc30e99ca70842899622e333eb64d3b68ee7a167
Epsilon
7d017b752826bf83685828bebc8a00b050490f46aaa8c21b0dd1020f0c9b563e
Epsilon
8aa7a5eb1247b0d54b2bd29dd6b2d563ca30da4990c8220f61da826fe5941452
Epsilon
a7187cba00f1ecf7d0ce8758c9376610eb513869152e7b4bd28e711f6b440053
Epsilon
b5e178f6b78d77fa92e271409eb3d0472c5608df13fbb7de1f8501f0ee87a8d0
Epsilon
bb1b5b72a867a401876a6ad6a9bcc1f4af9f4e4fdb568ef7ce2b812796b48c7a
Epsilon
be4a89687a7d185648c2e9341a18b37d06e71b06cbbbb8b3d2f6e0bc215a8548
Epsilon
e04977f7d1fbf8b3a69237bbd2170af6c3046a8ce29e2732cd7c72f079f0e0f8
Epsilon
+ 83 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  10/10
Tags:
persistence ransomware spyware
Link:
https://tria.ge/reports/210128-yz588879h6/
Behaviour
Interacts with shadow copies
Kills process with taskkill
Modifies Internet Explorer settings
Modifies registry class
Suspicious behavior: CmdExeWriteProcessMemorySpam
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Drops file in Program Files directory
Drops file in Windows directory
Drops file in System32 directory
Enumerates physical storage devices
Adds Run key to start application
Drops startup file
Reads user/profile data of web browsers
Executes dropped EXE
Deletes shadow copies
Unpacked files
SH256 hash:
b621f1f8982275608b48ba66fb69fdc6a1dfd9292b9725daf5f45b25493c4680
MD5 hash:
68e79d26e4276efb489cfe9f297b92a3
SHA1 hash:
f6ca84c12b4af6106dac8dfe2372cc6729c75e98
Link:
https://www.unpac.me/results/9458c0a4-b1fd-4099-a548-e910adaaad8d/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Azorult
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/b621f1f8982275608b48ba66fb69fdc6a1dfd9292b9725daf5f45b25493c4680

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:Choice_Del_method_bin_mem
Create hunting rule
Author:James_inthe_box
Description:cmd ping IP nul del
Rule name:Destructive_Ransomware_Gen1
Create hunting rule
Author:Florian Roth
Description:Detects destructive malware
Reference:http://blog.talosintelligence.com/2018/02/olympic-destroyer.html
Rule name:INDICATOR_SUSPICIOUS_GENRansomware
Create hunting rule
Author:ditekSHen
Description:detects command variations typically used by ransomware

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/114212/

Comments