MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 a28e55a948927ae556de391674d88cde33a4ad9700f7e5e21a94d8d3755ebe70. 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
BlackMatter
Vendor detections: 17
| SHA256 hash: | a28e55a948927ae556de391674d88cde33a4ad9700f7e5e21a94d8d3755ebe70 |
|---|---|
| SHA3-384 hash: | 230c385370a283bff64c4f793c6f2a2e018eb947682827c54433f6ee55a8364828bd5ae2efb28eb8e3647ac18be12a11 |
| SHA1 hash: | 3f1b554aa8e43c122e5cac556225f5ad379cbfc2 |
| MD5 hash: | 062c17287630f6ebaf5fdfc4119a82ee |
| humanhash: | muppet-happy-high-hydrogen |
| File name: | file |
| Download: | download sample |
| Signature | BlackMatter |
| File size: | 149'504 bytes |
| First seen: | 2026-01-23 07:01:14 UTC |
| Last seen: | 2026-01-28 14:01:03 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 41fb8cb2943df6de998b35a9d28668e8 (82 x BlackMatter, 9 x LockBit, 1 x DragonForce) |
| ssdeep | 3072:m6glyuxE4GsUPnliByocWep3TkRhtN5mv0ABLunq:m6gDBGpvEByocWeZARTm8Ad |
| Threatray | 2'255 similar samples on MalwareBazaar |
| TLSH | T127E38E21F213D073C83718F12736B572F39E8E2C19996947EAD80F99BCA48136F45597 |
| TrID | 25.0% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 19.1% (.EXE) Win16 NE executable (generic) (5038/12/1) 17.1% (.EXE) Win32 Executable (generic) (4504/4/1) 7.8% (.EXE) Win16/32 Executable Delphi generic (2072/23) 7.8% (.ICL) Windows Icons Library (generic) (2059/9) |
| Magika | pebin |
| Reporter |  Bitsight |
| Tags: | BlackMatter dropped-by-phorpiex exe |
Intelligence
File Origin
# of uploads :
235
# of downloads :
124
Origin country :
USVendor Threat Intelligence
Malware configuration found for:
LockBit
Details
LockBit
a PCG-lockbit seed, a RSA public key modulus, flags, hashes for excluded folders, files, and extensions, hashes for computer names, killed processes and services, a list of credentials, a ransom note, and information parsed from the ransom note
Malware family:
lockbit
ID:
1
File name:
_a28e55a948927ae556de391674d88cde33a4ad9700f7e5e21a94d8d3755ebe70.exe
Verdict:
Malicious activity
Analysis date:
2026-01-23 07:04:25 UTC
Tags:
auto-download lockbit ransomware braincipher darkside arch-scr
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Verdict:
Malicious
Score:
70.0%
Tags:
ransomware shellcode crypt
Verdict:
Malicious
Labled as:
Trojan.Ransom
Verdict:
Malicious
File Type:
exe x32
First seen:
2026-01-23T04:16:00Z UTC
Last seen:
2026-01-23T12:54:00Z UTC
Hits:
~10
Detections:
Trojan-Dropper.Win32.Dycler Trojan.Win32.Inject.sb Trojan.Win32.Agent.sb HEUR:Trojan-Ransom.Win32.Generic Trojan-Ransom.Win32.Agent.sb Trojan-Dropper.Win32.Dapato.sb Trojan.Win32.Zapchast.bgvs Trojan-Ransom.Win32.Lockbit.tre Trojan-Ransom.Win32.Encoder.sb VHO:Trojan-Ransom.Win32.Convagent.gen VHO:Trojan-Ransom.Win32.Agent.gen Trojan-Ransom.Win32.BlackMatter.d VHO:Trojan-Ransom.Win32.Lockbit.gen Trojan.Win32.Udochka.sb PDM:Trojan.Win32.Generic
Malware family:
BlackMatter Ransomware
Verdict:
Malicious
Score:
100%
Verdict:
Malware
File Type:
PE
Verdict:
inconclusive
YARA:
4 match(es)
Tags:
Executable PDB Path PE (Portable Executable) PE File Layout Win 32 Exe x86
Detection:
lockbit
Verdict:
Malicious
Threat:
Family.LOCKBIT
Threat name:
Win32.Ransomware.Lockbit
Status:
Malicious
First seen:
2026-01-23 07:02:47 UTC
File Type:
PE (Exe)
AV detection:
24 of 24 (100.00%)
Threat level:
5/5
Detection(s):
Malicious file
Verdict:
malicious
Label(s):
lockbit
Similar samples:
+ 2'245 additional samples on MalwareBazaar
Result
Malware family:
lockbit
Score:
10/10
Tags:
family:lockbit defense_evasion discovery ransomware spyware stealer
Behaviour
Checks processor information in registry
Enumerates system info in registry
Modifies Control Panel
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: RenamesItself
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Drops file in System32 directory
Sets desktop wallpaper using registry
Suspicious use of NtSetInformationThreadHideFromDebugger
Drops desktop.ini file(s)
Enumerates connected drives
Indicator Removal: File Deletion
Checks computer location settings
Deletes itself
Executes dropped EXE
Reads user/profile data of web browsers
Renames multiple (733) files with added filename extension
Unpacked files
SH256 hash:
a28e55a948927ae556de391674d88cde33a4ad9700f7e5e21a94d8d3755ebe70
MD5 hash:
062c17287630f6ebaf5fdfc4119a82ee
SHA1 hash:
3f1b554aa8e43c122e5cac556225f5ad379cbfc2
Malware family:
LockBit
Verdict:
Malicious
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
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: | CRIME_WIN32_RANSOM_BLACKMATTER |
|---|---|
| Author: | Rony (@r0ny_123) |
| Description: | Detects Blackmatter ransomware |
| Rule name: | Darkside |
|---|---|
| Author: | @bartblaze |
| Description: | Identifies Darkside ransomware. |
| Rule name: | lb_stack_string_decrypt_1 |
|---|---|
| Author: | CTI Purple Team |
| Description: | This rule detects the code pattern of the Stack Strings decryption algorithm. |
| Rule name: | Windows_Ransomware_Lockbit_369e1e94 |
|---|---|
| Author: | Elastic Security |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
Web download
Dropped by
Phorpiex
Delivery method
Distributed via web download
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