MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 aa1af1f3b5f18d87340a9af9d253e296982e4fb1b11d88c7151c81cae86689c5. 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
Stop
Vendor detections: 13
| SHA256 hash: | aa1af1f3b5f18d87340a9af9d253e296982e4fb1b11d88c7151c81cae86689c5 |
|---|---|
| SHA3-384 hash: | de96a5e29be74d86968d79ed2de5063a5c241b31da6ac9e05174704feee7f9aee6c92b5cfc68e8aeba810a57ae4f21d6 |
| SHA1 hash: | 38fb9bc961f5121ea41c09a0cdfa1c9613b8c83e |
| MD5 hash: | 411d4192777c0619c25e663fdba7c157 |
| humanhash: | yankee-oscar-papa-magnesium |
| File name: | aa1af1f3b5f18d87340a9af9d253e296982e4fb1b11d88c7151c81cae86689c5 |
| Download: | download sample |
| Signature | Stop |
| File size: | 798'208 bytes |
| First seen: | 2021-09-03 09:05:48 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 41ae3a1dcdcc3462598a2d3012d6e252 (9 x RaccoonStealer, 2 x Stop, 1 x Smoke Loader) |
| ssdeep | 12288:7PH1/RsQXjeuRgD+l6udVfD3l/gkYvEHeLvKK8gpP+x1IRPhB:79FXKx8dp3l/MQeLvR86aI |
| Threatray | 476 similar samples on MalwareBazaar |
| TLSH | T1540512613261FDAED49452344710DAF7EB26B8B0A8A0D3573696774A1F7C2903F22FD2 |
| dhash icon | fcfcd4d4d4dcd8c0 (52 x RaccoonStealer, 28 x RedLineStealer, 6 x Smoke Loader) |
| Reporter |  JAMESWT_WT |
| Tags: | exe Stop |
Intelligence
File Origin
# of uploads :
1
# of downloads :
158
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
aa1af1f3b5f18d87340a9af9d253e296982e4fb1b11d88c7151c81cae86689c5
Verdict:
Suspicious activity
Analysis date:
2021-09-03 09:36:36 UTC
Tags:
n/a
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
STOP
Result
Verdict:
Malware
Maliciousness:
Behaviour
Creating a window
Unauthorized injection to a recently created process
DNS request
Connection attempt
Sending a custom TCP request
Creating a file
Launching a process
Creating a process with a hidden window
Adding an access-denied ACE
Deleting a recently created file
Sending an HTTP GET request
Sending a UDP request
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Query of malicious DNS domain
Enabling autorun by creating a file
Malware family:
STOP Ransomware
Verdict:
Malicious
Result
Threat name:
Djvu Vidar
Detection:
malicious
Classification:
rans.troj.spyw.evad
Score:
100 / 100
Signature
Antivirus detection for URL or domain
Contains functionality to inject code into remote processes
Detected unpacking (changes PE section rights)
Found ransom note / readme
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
Tries to harvest and steal browser information (history, passwords, etc)
Yara detected Djvu Ransomware
Yara detected Vidar
Yara detected Vidar stealer
Behaviour
Behavior Graph:
Threat name:
Win32.Trojan.Fragtor
Status:
Malicious
First seen:
2021-08-31 00:50:25 UTC
File Type:
PE (Exe)
Extracted files:
82
AV detection:
32 of 43 (74.42%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Similar samples:
+ 466 additional samples on MalwareBazaar
Result
Malware family:
vidar
Score:
10/10
Tags:
family:djvu family:vidar botnet:517 discovery persistence ransomware spyware stealer
Behaviour
Checks processor information in registry
Delays execution with timeout.exe
Kills process with taskkill
Modifies system certificate store
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Accesses 2FA software files, possible credential harvesting
Accesses cryptocurrency files/wallets, possible credential harvesting
Adds Run key to start application
Checks installed software on the system
Looks up external IP address via web service
Loads dropped DLL
Modifies file permissions
Reads user/profile data of web browsers
Downloads MZ/PE file
Executes dropped EXE
Vidar Stealer
Detected Djvu ransomeware
Djvu Ransomware
Vidar
Malware Config
C2 Extraction:
https://romkaxarit.tumblr.com/
Unpacked files
SH256 hash:
318b3878501bc3fe6abb68d943779716a558a30998aa252b6d7773f952947bc9
MD5 hash:
56384e2f613dd565bc783c215e7f20ba
SHA1 hash:
aa1bf8ad309f1721222dc1c8bf700f69040ea876
Detections:
win_stop_auto
SH256 hash:
aa1af1f3b5f18d87340a9af9d253e296982e4fb1b11d88c7151c81cae86689c5
MD5 hash:
411d4192777c0619c25e663fdba7c157
SHA1 hash:
38fb9bc961f5121ea41c09a0cdfa1c9613b8c83e
Malware family:
Djvu
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: | MALWARE_Win_STOP |
|---|---|
| Author: | ditekSHen |
| Description: | Detects STOP ransomware |
| Rule name: | SUSP_XORed_URL_in_EXE |
|---|---|
| Author: | Florian Roth |
| Description: | Detects an XORed URL in an executable |
| Reference: | https://twitter.com/stvemillertime/status/1237035794973560834 |
| Rule name: | win_stop_auto |
|---|---|
| Author: | Felix Bilstein - yara-signator at cocacoding dot com |
| Description: | Detects win.stop. |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
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