MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 658849d3fcdecf3a960c712819bc8e2eca2e0b53e6313e77edd3410dfd2468e8. 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


Tofsee


Vendor detections: 14


Intelligence 14 IOCs YARA 10 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 658849d3fcdecf3a960c712819bc8e2eca2e0b53e6313e77edd3410dfd2468e8
SHA3-384 hash: e98e61b4f9c8fd95940ff08abfdd731833e208a0b9d5eed9d7da9e4a0280a1abeb5fd66baf63ac459551e0b42f9aaa55
SHA1 hash: a9b3f47da19f997a6605a7206a5945bdb27fb7d1
MD5 hash: 4c9908656905016acaf1ba84d0b38ba6
humanhash: nuts-single-carpet-comet
File name:file
Download: download sample
Signature Tofsee
Create hunting rule
File size:199'680 bytes
First seen:2023-02-06 05:02:58 UTC
Last seen:2023-02-06 05:21:12 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 3ced25aef08debb1b64327bf79b9678c (14 x Smoke Loader, 10 x RedLineStealer, 7 x CoinMiner)
ssdeep 3072:CWaOOKuQW6rorQLpLLWAz+85g9Qha2ZLaxsan4pA+EEl34MdAYzoci1pms:jaO9/HLNLOLwLaeM4pATEZdAY9i1p
TLSH T19514D0223680C072C5BB55305D60E7A52BBEB8320678DE5B779B076E9F303D1A63634B
TrID 47.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
15.9% (.EXE) Win64 Executable (generic) (10523/12/4)
9.9% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
7.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
6.8% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon 916a6a6a6a6a6a74 (5 x RedLineStealer, 3 x Amadey, 2 x Tofsee)
Reporter andretavare5
Tags:exe Tofsee


Avatar
andretavare5
Sample downloaded from http://176.113.115.239:8080/4.php

Intelligence

File Origin
# of uploads :
12
# of downloads :
203
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
tofsee
Create hunting rule
ID:
1
File name:
file
Verdict:
Malicious activity
Analysis date:
2023-02-06 05:04:43 UTC
Tags:
tofsee miner trojan
Link:
https://app.any.run/tasks/c61d4c83-5e5a-4408-bc74-f9630b6e63e3

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Tofsee
Create hunting rule
Link:
https://www.capesandbox.com/analysis/360558/
Detection(s):
SecuriteInfo.com.MSIL-55.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Сreating synchronization primitives
Running batch commands
Creating a process with a hidden window
Launching a process
Creating a service
Launching the process to change the firewall settings
Creating a file
Creating a process from a recently created file
Launching a service
Launching the default Windows debugger (dwwin.exe)
Moving a file to the Windows subdirectory
Enabling autorun for a service
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Verdict:
No Threat
Threat level:
  2/10
Confidence:
100%
Tags:
greyware packed
Link:
https://www.filescan.io/uploads/63e08a08447edb203a02dff0/reports/f6d6bf61-11f0-4f9a-acd3-8fc20280be88/overview
Verdict:
Malicious
Labled as:
Ransom.51A80467
Link:
https://www.hybrid-analysis.com/sample/658849d3fcdecf3a960c712819bc8e2eca2e0b53e6313e77edd3410dfd2468e8
Result
Verdict:
UNKNOWN
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:
Tofsee
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/3e42a358-7929-46e8-a7dd-7ce972d694a1
Result
Threat name:
Tofsee
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1166254
Signature
Allocates memory in foreign processes
Antivirus detection for dropped file
C2 URLs / IPs found in malware configuration
Deletes itself after installation
Detected unpacking (changes PE section rights)
Detected unpacking (overwrites its own PE header)
Drops executables to the windows directory (C:\Windows) and starts them
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Modifies the windows firewall
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
Snort IDS alert for network traffic
System process connects to network (likely due to code injection or exploit)
Uses netsh to modify the Windows network and firewall settings
Writes to foreign memory regions
Yara detected Tofsee
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 799025 Sample: file.exe Startdate: 06/02/2023 Architecture: WINDOWS Score: 100 43 microsoft-com.mail.protection.outlook.com 2->43 51 Snort IDS alert for network traffic 2->51 53 Multi AV Scanner detection for domain / URL 2->53 55 Malicious sample detected (through community Yara rule) 2->55 57 7 other signatures 2->57 8 pawbslxm.exe 2->8         started        11 file.exe 2 2->11         started        signatures3 process4 file5 59 Detected unpacking (changes PE section rights) 8->59 61 Detected unpacking (overwrites its own PE header) 8->61 63 Writes to foreign memory regions 8->63 69 2 other signatures 8->69 14 svchost.exe 1 8->14         started        41 C:\Users\user\AppData\Local\...\pawbslxm.exe, PE32 11->41 dropped 65 Uses netsh to modify the Windows network and firewall settings 11->65 67 Modifies the windows firewall 11->67 18 cmd.exe 1 11->18         started        21 netsh.exe 3 11->21         started        23 cmd.exe 2 11->23         started        25 3 other processes 11->25 signatures6 process7 dnsIp8 45 jotunheim.name 80.66.75.254, 443, 49702 RISS-ASRU Russian Federation 14->45 47 svartalfheim.top 46.173.218.63, 443, 49697, 49698 GARANT-PARK-INTERNETRU Russian Federation 14->47 49 2 other IPs or domains 14->49 71 System process connects to network (likely due to code injection or exploit) 14->71 73 Deletes itself after installation 14->73 39 C:\Windows\SysWOW64\...\pawbslxm.exe (copy), PE32 18->39 dropped 27 conhost.exe 18->27         started        29 conhost.exe 21->29         started        31 conhost.exe 23->31         started        33 conhost.exe 25->33         started        35 conhost.exe 25->35         started        37 conhost.exe 25->37         started        file9 signatures10 process11
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/658849d3fcdecf3a960c712819bc8e2eca2e0b53e6313e77edd3410dfd2468e8/
Threat name:
Win32.Backdoor.Tofsee
Create hunting rule
Status:
Malicious
First seen:
2023-02-06 05:03:07 UTC
File Type:
PE (Exe)
Extracted files:
4
AV detection:
21 of 26 (80.77%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=mweetu7433htvfqmoeubtpeof3fc4c2t4yyt457n2naq37jendua._file
Verdict:
malicious
Result
Malware family:
xmrig
Create hunting rule
Score:
  10/10
Tags:
family:tofsee family:xmrig evasion miner persistence trojan
Link:
https://tria.ge/reports/230206-fppleacb72/
Behaviour
Modifies data under HKEY_USERS
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
Launches sc.exe
Drops file in System32 directory
Suspicious use of SetThreadContext
Checks computer location settings
Deletes itself
Executes dropped EXE
Creates new service(s)
Modifies Windows Firewall
Sets service image path in registry
XMRig Miner payload
Tofsee
Windows security bypass
xmrig
Malware Config
C2 Extraction:
svartalfheim.top
jotunheim.name
Unpacked files
SH256 hash:
658849d3fcdecf3a960c712819bc8e2eca2e0b53e6313e77edd3410dfd2468e8
MD5 hash:
4c9908656905016acaf1ba84d0b38ba6
SHA1 hash:
a9b3f47da19f997a6605a7206a5945bdb27fb7d1
Link:
https://www.unpac.me/results/a1f375e5-2b48-4cc9-a02c-ed69a68e9b2e/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/658849d3fcde/report/overview.html
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/658849d3fcdecf3a960c712819bc8e2eca2e0b53e6313e77edd3410dfd2468e8

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:Detect_Tofsee
Create hunting rule
Author:@malgamy12
Description:Detect_Tofsee
Rule name:MALWARE_Win_Tofsee
Create hunting rule
Author:ditekSHen
Description:Detects Tofsee
Rule name:pdb_YARAify
Create hunting rule
Author:@wowabiy314
Description:PDB
Rule name:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns
Rule name:tofsee_yhub
Create hunting rule
Author:Billy Austin
Description:Detects Tofsee botnet, also known as Gheg
Rule name:Windows_Trojan_Smokeloader_3687686f
Create hunting rule
Author:Elastic Security
Rule name:Windows_Trojan_Tofsee_26124fe4
Create hunting rule
Author:Elastic Security
Rule name:win_tofsee_w0
Create hunting rule
Author:akrasuski1
Rule name:yara_template
Create hunting rule

File information

The table below shows additional information about this malware sample such as delivery method and external references.

  
Dropped by
PrivateLoader
  
Delivery method
Distributed via drive-by
Cape
Cape
https://www.capesandbox.com/analysis/360558/
  
URLhaus
https://urlhaus.abuse.ch/url/2513471/

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