MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 877c612cf42d85b943010437599b828383ecdf02a17e2b017367db34637e5463. 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


BigLock


Vendor detections: 8


Intelligence 8 IOCs YARA 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 877c612cf42d85b943010437599b828383ecdf02a17e2b017367db34637e5463
SHA3-384 hash: caf2b1df0f85716ad3331be2828af905be759fd349d901ace35a0e5647132ce6850103427a2c3b9354c03741e6ab4248
SHA1 hash: 9cb58078b3fe2119329e482561d0c7cb740e937c
MD5 hash: 306c47fcb51611bee1ef804c95c7007f
humanhash: georgia-potato-five-speaker
File name:locker.bin
Download: download sample
Signature BigLock
Create hunting rule
File size:459'264 bytes
First seen:2021-06-05 13:02:11 UTC
Last seen:2021-06-06 12:15:42 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 34d3cfe59cf0e09bc867b43bab6fa814 (1 x BigLock, 1 x MedusaLocker)
ssdeep 12288:84XsHhFzSHHXne6++bMo+1MEGXlT3Rrr:8isBFzS3B1bMo+1ATpr
TLSH 23A44A3E62ED05F9E07BE1388D932942E5B63805037087DF0394566A1E27BF5AD3AF91
Reporter Arkbird_SOLG
Tags:BigLock exe Ransomware

Intelligence

File Origin
# of uploads :
3
# of downloads :
788
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
locker.bin
Verdict:
No threats detected
Analysis date:
2021-06-05 13:03:19 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/3d0d549f-e1d9-4792-8273-620bd71190a1

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/164685/
Detection(s):
SecuriteInfo.com.Trojan.GenericKD.37038809.10394.15009.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending an HTTP POST request
Launching a process
Sending a UDP request
Creating a file in the Windows subdirectories
Moving a file to the Windows subdirectory
Launching a service
Creating a file
Enabling the 'hidden' option for recently created files
Reading critical registry keys
Running batch commands
Creating a process with a hidden window
Deleting volume shadow copies
Preventing system recovery
Creating a file in the mass storage device
Stealing user critical data
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.
Malware family:
goBot2
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/d81da338-ce20-4a91-a29e-57577b2574a5
Result
Threat name:
Unknown
Detection:
malicious
Classification:
rans
Score:
92 / 100
Link:
https://www.joesandbox.com/analysis/797592
Signature
Deletes shadow drive data (may be related to ransomware)
May disable shadow drive data (uses vssadmin)
Multi AV Scanner detection for submitted file
Sigma detected: Copying Sensitive Files with Credential Data
Sigma detected: Modification of Boot Configuration
Sigma detected: Shadow Copies Deletion Using Operating Systems Utilities
Sigma detected: WannaCry Ransomware
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
Uses bcdedit to modify the Windows boot settings
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 429988 Sample: locker.bin Startdate: 05/06/2021 Architecture: WINDOWS Score: 92 42 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->42 44 Sigma detected: WannaCry Ransomware 2->44 46 Multi AV Scanner detection for submitted file 2->46 48 4 other signatures 2->48 8 locker.exe 2->8         started        process3 dnsIp4 40 94.156.35.227, 49707, 49726, 80 BELCLOUDBG Bulgaria 8->40 50 May disable shadow drive data (uses vssadmin) 8->50 52 Deletes shadow drive data (may be related to ransomware) 8->52 54 Uses bcdedit to modify the Windows boot settings 8->54 12 vssadmin.exe 1 8->12         started        14 vssadmin.exe 1 8->14         started        16 vssadmin.exe 1 8->16         started        18 14 other processes 8->18 signatures5 process6 process7 20 conhost.exe 12->20         started        22 conhost.exe 12->22         started        24 conhost.exe 14->24         started        26 conhost.exe 14->26         started        28 conhost.exe 16->28         started        30 conhost.exe 18->30         started        32 conhost.exe 18->32         started        34 conhost.exe 18->34         started        36 8 other processes 18->36 process8 38 conhost.exe 28->38         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/877c612cf42d85b943010437599b828383ecdf02a17e2b017367db34637e5463/
Threat name:
Win64.Ransomware.MedusaLocker
Create hunting rule
Status:
Malicious
First seen:
2021-06-05 01:31:11 UTC
AV detection:
19 of 29 (65.52%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=q56gclhufwc3sqybaq3vtg4cqob6zxycuf7cwaltm7ntiy36krrq._file
Result
Malware family:
n/a
Score:
  10/10
Tags:
evasion ransomware spyware stealer
Link:
https://tria.ge/reports/210605-mgmmcs89rs/
Behaviour
Interacts with shadow copies
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
System policy modification
Enumerates physical storage devices
Drops file in Windows directory
Enumerates connected drives
Deletes itself
Reads user/profile data of web browsers
Deletes System State backups
Modifies extensions of user files
Deletes shadow copies
Modifies boot configuration data using bcdedit
Unpacked files
SH256 hash:
877c612cf42d85b943010437599b828383ecdf02a17e2b017367db34637e5463
MD5 hash:
306c47fcb51611bee1ef804c95c7007f
SHA1 hash:
9cb58078b3fe2119329e482561d0c7cb740e937c
Link:
https://www.unpac.me/results/f684c9b1-85e1-4d9a-a3d6-4e27f2376d4f/
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/877c612cf42d85b943010437599b828383ecdf02a17e2b017367db34637e5463

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: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.

  
X
https://twitter.com/fbgwls245/status/1400971422336311297
Cape
Cape
https://www.capesandbox.com/analysis/164685/

Comments