MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 e4cb9f1a53b2c5674a81c402c96e5892e0bee2bbba56053c92be4c85e66e353b. 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: 15


Intelligence 15 IOCs YARA 13 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: e4cb9f1a53b2c5674a81c402c96e5892e0bee2bbba56053c92be4c85e66e353b
SHA3-384 hash: 1a52c1d7d4175abedadd041abe3c2f1ffe8fa7965f16b9e433448ac7804b60b46f486db603b63d7a2e0fb881029d928f
SHA1 hash: a7dd46ec3bef91ca1331f6a110549f542625f70d
MD5 hash: f1e58d64b14cd0780d8a9f6a18818f1f
humanhash: utah-hydrogen-spring-india
File name:file
Download: download sample
Signature Tofsee
Create hunting rule
File size:265'728 bytes
First seen:2023-10-21 13:49:00 UTC
Last seen:2023-10-21 15:29:48 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 77bb604ddb8d2a9df61815c9b5a4d907 (3 x Tofsee, 2 x Stealc, 1 x TeamBot)
ssdeep 3072:syBN2IxAfzi5F3AAOUcekXJ1XSDhixgdoTtmc2QKv+D:vgGAfu5FwJUKJM9ixgdoH62
TLSH T1DF44CF11B791C436E56729351870C6A61F7ABCE2AA6181CB33983F7E9D723C19B25F03
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 70d0ddd0c0d8d2dd (1 x Tofsee)
Reporter andretavare5
Tags:exe Tofsee


Avatar
andretavare5
Sample downloaded from http://176.113.115.84:8080/4.php

Intelligence

File Origin
# of uploads :
5
# of downloads :
372
Origin country :
US US
Vendor Threat Intelligence
Malware family:
tofsee
Create hunting rule
ID:
1
File name:
file
Verdict:
Malicious activity
Analysis date:
2023-10-21 13:49:25 UTC
Tags:
tofsee loader botnet miner
Link:
https://app.any.run/tasks/97cd51b5-2120-4fe2-b641-24447c4f0342

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Trojan.DownLoader46.25471.29227.6663.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 file
Launching the process to change the firewall settings
Creating a process from a recently created file
Creating a service
Launching a service
Launching the default Windows debugger (dwwin.exe)
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Enabling autorun for a service
Gathering data
Gathering data
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/e4cb9f1a53b2c5674a81c402c96e5892e0bee2bbba56053c92be4c85e66e353b
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:
Tofsee
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/69b0a92a-dbd9-4dd8-9693-063c0d3e930d
Result
Threat name:
Tofsee
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1329679
Signature
Allocates memory in foreign processes
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Deletes itself after installation
Detected unpacking (changes PE section rights)
Detected unpacking (overwrites its own PE header)
Found API chain indicative of debugger detection
Found malware configuration
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
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: 1329679 Sample: file.exe Startdate: 21/10/2023 Architecture: WINDOWS Score: 100 57 vanaheim.cn 2->57 59 microsoft-com.mail.protection.outlook.com 2->59 67 Multi AV Scanner detection for domain / URL 2->67 69 Found malware configuration 2->69 71 Malicious sample detected (through community Yara rule) 2->71 73 7 other signatures 2->73 8 dpfsgfxb.exe 2->8         started        11 file.exe 2 2->11         started        14 svchost.exe 6 6 2->14         started        signatures3 process4 file5 75 Detected unpacking (changes PE section rights) 8->75 77 Detected unpacking (overwrites its own PE header) 8->77 79 Found API chain indicative of debugger detection 8->79 85 3 other signatures 8->85 16 svchost.exe 1 8->16         started        20 WerFault.exe 2 8->20         started        49 C:\Users\user\AppData\Local\...\dpfsgfxb.exe, PE32 11->49 dropped 81 Uses netsh to modify the Windows network and firewall settings 11->81 83 Modifies the windows firewall 11->83 22 cmd.exe 1 11->22         started        25 netsh.exe 2 11->25         started        27 cmd.exe 2 11->27         started        33 4 other processes 11->33 29 WerFault.exe 2 14->29         started        31 WerFault.exe 2 14->31         started        signatures6 process7 dnsIp8 51 vanaheim.cn 45.11.27.150, 443, 49739, 49742 RETN-ASEU Russian Federation 16->51 53 104.47.53.36, 25, 49768, 49770 MICROSOFT-CORP-MSN-AS-BLOCKUS United States 16->53 55 4 other IPs or domains 16->55 61 System process connects to network (likely due to code injection or exploit) 16->61 63 Found API chain indicative of debugger detection 16->63 65 Deletes itself after installation 16->65 47 (copy), PE32 22->47 dropped 35 conhost.exe 22->35         started        37 conhost.exe 25->37         started        39 conhost.exe 27->39         started        41 conhost.exe 33->41         started        43 conhost.exe 33->43         started        45 conhost.exe 33->45         started        file9 signatures10 process11
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/e4cb9f1a53b2c5674a81c402c96e5892e0bee2bbba56053c92be4c85e66e353b
Detection:
tofsee
Create hunting rule
Link:
https://mwdb.cert.pl/sample/e4cb9f1a53b2c5674a81c402c96e5892e0bee2bbba56053c92be4c85e66e353b/
Threat name:
Win32.Trojan.Privateloader
Create hunting rule
Status:
Malicious
First seen:
2023-10-21 13:49:06 UTC
File Type:
PE (Exe)
Extracted files:
13
AV detection:
21 of 24 (87.50%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=4tfz6gstwlcwosubyqbms3syslql5yv3xjlakpesxzgilztogu5q._file
Result
Malware family:
xmrig
Create hunting rule
Score:
  10/10
Tags:
family:tofsee family:xmrig evasion miner persistence trojan
Link:
https://tria.ge/reports/231021-q4nmrsgd82/
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
Looks up external IP address via web service
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:
vanaheim.cn
jotunheim.name
Gathering data
Malware family:
XMRig
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/e4cb9f1a53b2/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/e4cb9f1a53b2c5674a81c402c96e5892e0bee2bbba56053c92be4c85e66e353b

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:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerException__ConsoleCtrl
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerHiding__Thread
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:MALWARE_Win_Grum
Create hunting rule
Author:ditekSHen
Description:Detect Grum spam bot
Rule name:MALWARE_Win_Tofsee
Create hunting rule
Author:ditekSHen
Description:Detects Tofsee
Rule name:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns
Rule name:ThreadControl__Context
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:tofsee_yhub
Create hunting rule
Author:Billy Austin
Description:Detects Tofsee botnet, also known as Gheg
Rule name:Windows_Trojan_Tofsee_26124fe4
Create hunting rule
Author:Elastic Security
Rule name:win_tofsee
Create hunting rule
Author:akrasuski1
Description:Tofsee malware
Reference:https://www.bitsight.com/blog/tofsee-botnet-proxying-and-mining
Rule name:win_tofsee_bot
Create hunting rule
Author:akrasuski1
Description:Tofsee malware
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
  
URLhaus
https://urlhaus.abuse.ch/url/2674304/

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