MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 575e8f38cfb2015941a558082390e1f02c7318bd0d6b82261065bd3839123bf8. 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: 7


Intelligence 7 IOCs YARA 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 575e8f38cfb2015941a558082390e1f02c7318bd0d6b82261065bd3839123bf8
SHA3-384 hash: f401857a8026bc3fefa6f2666fccd3afc74817230d947fe302219c0e95f80a9eaa9e9e110b304e803dbb4c8f935ee786
SHA1 hash: 78002cb6b191582409fc9353441dadfa7f0636a0
MD5 hash: 3bf8a1dc1de4dfc3563802ff4b00e758
humanhash: nine-black-east-blue
File name:575e8f38cfb2015941a558082390e1f02c7318bd0d6b82261065bd3839123bf8
Download: download sample
Signature Tofsee
Create hunting rule
File size:12'702'208 bytes
First seen:2020-11-09 21:57:42 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 625998b46324c845ea50edad85b63bc7 (9 x Tofsee)
ssdeep 393216:JBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB3:JBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB3
Threatray 13 similar samples on MalwareBazaar
TLSH 56D6A0C923E2C410FD1B77939BD89C87F15AA9E3F97BE1012288339AD5BB1754D41A38
Reporter seifreed
Tags:Tofsee

Intelligence

File Origin
# of uploads :
1
# of downloads :
127
Origin country :
n/a
Vendor Threat Intelligence
Detection(s):
Win.Malware.Locky-7090183-0
Create hunting rule

Win.Malware.Tofsee-7090196-1
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Running batch commands
Creating a process with a hidden window
Moving a file to the Windows subdirectory
Launching a process
Creating a service
Launching a service
Creating a process from a recently created file
Launching the process to change the firewall settings
DNS request
Connection attempt
Enabling autorun for a service
Unauthorized injection to a system process
Adding exclusions to Windows Defender
Result
Threat name:
Tofsee
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/527585
Signature
Allocates memory in foreign processes
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Changes security center settings (notifications, updates, antivirus, firewall)
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
Modifies the windows firewall
Multi AV Scanner detection for submitted file
Sigma detected: Suspicious Svchost Process
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: 312883 Sample: hfzqslkqeh Startdate: 10/11/2020 Architecture: WINDOWS Score: 100 53 microsoft-com.mail.protection.outlook.com 2->53 61 Antivirus detection for dropped file 2->61 63 Antivirus / Scanner detection for submitted sample 2->63 65 Multi AV Scanner detection for submitted file 2->65 67 7 other signatures 2->67 8 josfurwa.exe 2->8         started        11 hfzqslkqeh.exe 3 2->11         started        14 svchost.exe 2->14         started        16 9 other processes 2->16 signatures3 process4 dnsIp5 71 Detected unpacking (changes PE section rights) 8->71 73 Detected unpacking (overwrites its own PE header) 8->73 75 Writes to foreign memory regions 8->75 79 2 other signatures 8->79 19 svchost.exe 1 8->19         started        49 C:\Users\user\AppData\Local\...\josfurwa.exe, PE32 11->49 dropped 23 netsh.exe 3 11->23         started        25 cmd.exe 1 11->25         started        27 cmd.exe 1 11->27         started        31 4 other processes 11->31 77 Changes security center settings (notifications, updates, antivirus, firewall) 14->77 29 MpCmdRun.exe 1 14->29         started        51 127.0.0.1 unknown unknown 16->51 file6 signatures7 process8 dnsIp9 55 103.248.137.133, 465 DNC-ASDimensionNetworkCommunicationLimitedHK Hong Kong 19->55 57 111.121.193.242, 465 CHINANET-BACKBONENo31Jin-rongStreetCN China 19->57 59 microsoft-com.mail.protection.outlook.com 104.47.53.36, 25, 49719 MICROSOFT-CORP-MSN-AS-BLOCKUS United States 19->59 69 System process connects to network (likely due to code injection or exploit) 19->69 33 conhost.exe 23->33         started        35 conhost.exe 25->35         started        37 conhost.exe 27->37         started        39 conhost.exe 29->39         started        41 conhost.exe 31->41         started        43 conhost.exe 31->43         started        45 conhost.exe 31->45         started        47 conhost.exe 31->47         started        signatures10 process11
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/575e8f38cfb2015941a558082390e1f02c7318bd0d6b82261065bd3839123bf8/
Threat name:
Win32.Backdoor.Tofsee
Create hunting rule
Status:
Malicious
First seen:
2020-11-09 22:38:51 UTC
AV detection:
27 of 29 (93.10%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=k5pi6ogpwiavsqnflaechehb6awhggf5bvvyejqqmw6tqoishp4a._file
Verdict:
malicious
Similar samples:
0c3080ef33448167fc2b858db5ec7b2e4705cb12ca57119088892459ea0cc832
Tofsee
0e4e902b30a99c179a586c7fd3e27b1fe0b7f1cf5397cb4ee9f056a4fa547b5b
Tofsee
437f379f53cef47f79cf124ae6cfa8444cf9073df371455edd99039814cebee5
Tofsee
587f79f301d6ca9ad6a02642cf6ebfbce12b3eaa524ecd67834ca1314447c4da
Tofsee
8d64110a77ed9fe2d9454816668d95ed000442a34bb558ca0447ebd8c08b30ba
Tofsee
8fcb2057bdac3ba88cb811c44a0d79358075525506b1517c3e713aec8d31a666
Tofsee
af21217ee5523873bc4ee3b262ce06a371a1095abfea9729e3413cf9da1a0cab
Tofsee
ba227cfc4b73372ffcd726cf935645bd691e4e6c084eade585f73e15d1f649aa
Tofsee
cdbda4f45e8cb4d6117bcd21304c66a78bcb73f840f48d8e523e76e5b0b57582
Tofsee
f5c60cf3334fc3093cb2b7b6bcfa480bf87a74b4edd8830b97c1ee3b3e66cefd
Tofsee
+ 3 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  10/10
Tags:
evasion persistence trojan
Link:
https://tria.ge/reports/201109-flecaq56te/
Behaviour
Suspicious use of WriteProcessMemory
Launches sc.exe
Modifies service
Suspicious use of SetThreadContext
Deletes itself
Creates new service(s)
Executes dropped EXE
Modifies Windows Firewall
Windows security bypass
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/575e8f38cfb2015941a558082390e1f02c7318bd0d6b82261065bd3839123bf8

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:win_tofsee_w0
Create hunting rule
Author:akrasuski1

File information

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

  
Delivery method
Other

Comments