MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 8e4aa5a69a20e6a4efd973ac05879ac65d95c34903941c425db43e47f896e2ee. 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
Kovter
Vendor detections: 14
| SHA256 hash: | 8e4aa5a69a20e6a4efd973ac05879ac65d95c34903941c425db43e47f896e2ee |
|---|---|
| SHA3-384 hash: | f54ce72a9a2dca9a33c62167c0248b81cccd65212d025a4a2dae0d0e67b4d03b0797a3d29eeefb46c11143da6d3a7027 |
| SHA1 hash: | c8087673f93f1fadf523736646eeb13cb43987ad |
| MD5 hash: | c0e737f5d4d9d2994624c8aab05475c1 |
| humanhash: | enemy-earth-minnesota-west |
| File name: | 2023-02-12_c0e737f5d4d9d2994624c8aab05475c1_kovter |
| Download: | download sample |
| Signature | Kovter |
| File size: | 3'056'144 bytes |
| First seen: | 2023-02-13 05:21:52 UTC |
| Last seen: | 2023-02-14 04:57:18 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 70ecac21951390289e31a1a3b129c186 (2 x Kovter, 1 x DBatLoader) |
| ssdeep | 24576:HWrfdt2Zj1vpo4ajyKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKd:2jdAp1PagjLuSh3i+FtvkMzT+ |
| Threatray | 60 similar samples on MalwareBazaar |
| TLSH | T19EE55A19B7C4C136C07F07364C63D2852371F8679E2346AB35E0A72D7E757D04AA2ABA |
| TrID | 44.4% (.EXE) InstallShield setup (43053/19/16) 13.5% (.SCR) Windows screen saver (13097/50/3) 10.8% (.EXE) Win64 Executable (generic) (10523/12/4) 10.3% (.EXE) DOS Borland compiled Executable (generic) (10000/1/2) 6.7% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) |
| Reporter |  petikvx |
| Tags: | Kovter |
Intelligence
File Origin
# of uploads :
2
# of downloads :
111
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
2023-02-12_c0e737f5d4d9d2994624c8aab05475c1_kovter
Verdict:
No threats detected
Analysis date:
2023-02-13 05:23:42 UTC
Tags:
installer
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Kovter
Result
Verdict:
Malware
Maliciousness:
Behaviour
Searching for synchronization primitives
Launching the default Windows debugger (dwwin.exe)
Sending a custom TCP request
Verdict:
Malicious
Threat level:
10/10
Confidence:
100%
Tags:
datper greyware kovter overlay packed packed shell32.dll yakes
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
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:
Kovter
Verdict:
Malicious
Result
Threat name:
Conti, DBatLoader, NominatusCrypto
Detection:
malicious
Classification:
rans.troj
Score:
96 / 100
Signature
Antivirus / Scanner detection for submitted sample
Deletes shadow drive data (may be related to ransomware)
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Yara detected Conti ransomware
Yara detected DBatLoader
Yara detected NominatusCrypto Ransomware
Behaviour
Behavior Graph:
Threat name:
Win32.Trojan.Kovter
Status:
Malicious
First seen:
2023-02-01 15:25:56 UTC
File Type:
PE (Exe)
Extracted files:
639
AV detection:
25 of 26 (96.15%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Similar samples:
+ 50 additional samples on MalwareBazaar
Result
Malware family:
modiloader
Score:
10/10
Tags:
family:modiloader
Behaviour
Suspicious use of WriteProcessMemory
Program crash
Unpacked files
SH256 hash:
8e4aa5a69a20e6a4efd973ac05879ac65d95c34903941c425db43e47f896e2ee
MD5 hash:
c0e737f5d4d9d2994624c8aab05475c1
SHA1 hash:
c8087673f93f1fadf523736646eeb13cb43987ad
Detections:
win_kovter_g0
NominatusStormPEOverwriter
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: | aPLib_decompression |
|---|---|
| Author: | @r3c0nst |
| Description: | Detects aPLib decompression code often used in malware |
| Reference: | https://ibsensoftware.com/files/aPLib-1.1.1.zip |
| Rule name: | grakate_stealer_nov_2021 |
|---|
| Rule name: | INDICATOR_SUSPICIOUS_GENRansomware |
|---|---|
| Author: | ditekSHen |
| Description: | detects command variations typically used by ransomware |
| Rule name: | Kovter |
|---|---|
| Author: | kevoreilly |
| Description: | Kovter Payload |
| Rule name: | meth_peb_parsing |
|---|---|
| Author: | Willi Ballenthin |
| Rule name: | meth_stackstrings |
|---|---|
| Author: | Willi Ballenthin |
| Rule name: | pdb_YARAify |
|---|---|
| Author: | @wowabiy314 |
| Description: | PDB |
| Rule name: | QbotStuff |
|---|---|
| Author: | anonymous |
| Rule name: | shellcode |
|---|---|
| Author: | nex |
| Description: | Matched shellcode byte patterns |
| Rule name: | tick_Datper |
|---|---|
| Author: | JPCERT/CC Incident Response Group |
| Description: | detect Datper in memory |
| Reference: | https://blogs.jpcert.or.jp/en/2017/08/detecting-datper-malware-from-proxy-logs.html |
| Rule name: | Win32_Ransomware_Kovter |
|---|---|
| Author: | ReversingLabs |
| Description: | Yara rule that detects Kovter ransomware. |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
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