MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 739b133a8f133943739c64ad32d4fafa701c2d89270c938db14f995f0abcdd70. 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
Chaos
Vendor detections: 10
| SHA256 hash: | 739b133a8f133943739c64ad32d4fafa701c2d89270c938db14f995f0abcdd70 |
|---|---|
| SHA3-384 hash: | e1b37e7f616eb8645cde14e70a37b655fe986281952ffb149528e377c2c52154290c61897631f13268f28ddb43c26a9a |
| SHA1 hash: | 25310225b637cc044a1ad97525f6249bfa86ae1a |
| MD5 hash: | c86419b8db8a223534ad4eeb7a3e4b72 |
| humanhash: | coffee-saturn-yellow-cat |
| File name: | svchosts.exe |
| Download: | download sample |
| Signature | Chaos |
| File size: | 24'064 bytes |
| First seen: | 2022-07-16 15:02:19 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (48'661 x AgentTesla, 19'474 x Formbook, 12'208 x SnakeKeylogger) |
| ssdeep | 384:m3Mg/bqo2RMUYBssIpYHxNqoJ/r91CzTyew:Uqo26djIpsUg/r9EOew |
| TLSH | T16BB2B50867FA4A39F6FF1F7869B251505B75B857DC3DD74C188A008D0932B9CCD60BA6 |
| TrID | 72.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13) 10.4% (.EXE) Win64 Executable (generic) (10523/12/4) 6.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 4.4% (.EXE) Win32 Executable (generic) (4505/5/1) 2.0% (.EXE) OS/2 Executable (generic) (2029/13) |
| Reporter |  r3dbU7z |
| Tags: | Chaos exe Ransom |
Intelligence
File Origin
# of uploads :
1
# of downloads :
547
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Chaos
Detection(s):
Result
Verdict:
Malware
Maliciousness:
Behaviour
Creating a file in the %AppData% directory
Сreating synchronization primitives
Creating a process from a recently created file
Creating a file
Moving a recently created file
Changing a file
Reading critical registry keys
Creating a file in the %AppData% subdirectories
Moving a file to the %AppData% subdirectory
Unauthorized injection to a recently created process
Creating a file in the mass storage device
Stealing user critical data
Enabling autorun by creating a file
Encrypting user's files
Gathering data
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:
CHAOS Ransomware
Verdict:
Malicious
Result
Threat name:
Chaos
Detection:
malicious
Classification:
rans.expl.evad
Score:
100 / 100
Behaviour
Behavior Graph:
n/a
Threat name:
ByteCode-MSIL.Ransomware.FileCoder
Status:
Malicious
First seen:
2022-07-16 15:03:05 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
25 of 26 (96.15%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Result
Malware family:
chaos
Score:
10/10
Tags:
family:chaos evasion ransomware spyware stealer
Behaviour
Checks SCSI registry key(s)
Interacts with shadow copies
Modifies registry class
Opens file in notepad (likely ransom note)
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Drops desktop.ini file(s)
Checks computer location settings
Drops startup file
Reads user/profile data of web browsers
Deletes backup catalog
Executes dropped EXE
Modifies extensions of user files
Deletes shadow copies
Modifies boot configuration data using bcdedit
Chaos
Chaos Ransomware
Unpacked files
SH256 hash:
739b133a8f133943739c64ad32d4fafa701c2d89270c938db14f995f0abcdd70
MD5 hash:
c86419b8db8a223534ad4eeb7a3e4b72
SHA1 hash:
25310225b637cc044a1ad97525f6249bfa86ae1a
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.35
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: | Destructive_Ransomware_Gen1 |
|---|---|
| Author: | Florian Roth |
| Description: | Detects destructive malware |
| Reference: | http://blog.talosintelligence.com/2018/02/olympic-destroyer.html |
| Rule name: | Destructive_Ransomware_Gen1_RID31CB |
|---|---|
| Author: | Florian Roth |
| Description: | Detects destructive malware |
| Reference: | http://blog.talosintelligence.com/2018/02/olympic-destroyer.html |
| Rule name: | INDICATOR_SUSPICIOUS_GENRansomware |
|---|---|
| Author: | ditekSHen |
| Description: | detects command variations typically used by ransomware |
| Rule name: | MALWARE_Win_Chaos |
|---|---|
| Author: | ditekSHen |
| Description: | Detects Chaos ransomware |
| Rule name: | pe_imphash |
|---|
| Rule name: | Skystars_Malware_Imphash |
|---|---|
| Author: | Skystars LightDefender |
| Description: | imphash |
| Rule name: | SUSP_Modified_SystemExeFileName_in_File |
|---|---|
| Author: | Florian Roth |
| Description: | Detecst a variant of a system file name often used by attackers to cloak their activity |
| Reference: | https://www.symantec.com/blogs/threat-intelligence/seedworm-espionage-group |
| Rule name: | SUSP_Modified_SystemExeFileName_in_File_RID35F8 |
|---|---|
| Author: | Florian Roth |
| Description: | Detecst a variant of a system file name often used by attackers to cloak their activity |
| Reference: | https://www.symantec.com/blogs/threat-intelligence/seedworm-espionage-group |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
Web download
Delivery method
Distributed via web download
Comments
Login required
You need to login to in order to write a comment. Login with your abuse.ch account.