MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c959fbe4d4693a1d2b862e8e907fd6e41296d26b02d49346d2ff9ff454990987. 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 8 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: c959fbe4d4693a1d2b862e8e907fd6e41296d26b02d49346d2ff9ff454990987
SHA3-384 hash: 0bba21a1f2ce464bfaff922752922a0cac224d2df4bc7730487274462c30fc6a9f49b57a734c9beeb69135ee627d6fb7
SHA1 hash: aff601d5f00072a9675cc16319acbdd82aece1d1
MD5 hash: 828364f3bafcd843bc8199eb9d3abaea
humanhash: beryllium-spaghetti-emma-angel
File name:file
Download: download sample
Signature Tofsee
Create hunting rule
File size:189'440 bytes
First seen:2023-02-09 16:02:56 UTC
Last seen:2023-02-09 17:44:16 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 910163c173a5611f34260e641a94d790 (5 x Tofsee, 3 x RedLineStealer, 2 x Smoke Loader)
ssdeep 3072:Wz0+s/m2SY6o4VyWep+FWDFxxcA2htQrnJ/FBAOz:WzGdD4YWexFxxcAb/FBd
Threatray 2'872 similar samples on MalwareBazaar
TLSH T15F04CF2333D0E871D036B6389C26C6F5667EF8104F786A9B3B58263F4EB02D19676355
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 916a6a6a6a6a6e64 (2 x RedLineStealer, 2 x Tofsee, 1 x Smoke Loader)
Reporter andretavare5
Tags:exe Tofsee


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

Intelligence

File Origin
# of uploads :
8
# of downloads :
208
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
tofsee
Create hunting rule
ID:
1
File name:
file
Verdict:
Malicious activity
Analysis date:
2023-02-09 16:03:37 UTC
Tags:
tofsee
Link:
https://app.any.run/tasks/58054478-3c3d-41a3-92c5-49745c3c97d2

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/362893/
Detection(s):
SecuriteInfo.com.Win32.BotX-gen.26014.3917.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a file in the %temp% directory
Сreating synchronization primitives
Running batch commands
Creating a process with a hidden window
Launching a process
Moving a file to the Windows subdirectory
Launching the process to change the firewall settings
Creating a service
Launching a service
Creating a process from a recently created file
Searching for synchronization primitives
DNS request
Possible injection to a system process
Enabling autorun for a service
Unauthorized injection to a system process
Adding exclusions to Windows Defender
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
greyware packed
Link:
https://www.filescan.io/uploads/63e51937459bcf4604000db9/reports/c3a7d723-90c7-4dcc-902f-c65ec81aaf7e/overview
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/c959fbe4d4693a1d2b862e8e907fd6e41296d26b02d49346d2ff9ff454990987
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/e1ecc8d6-619e-45f3-b9a0-451e0f60aef3
Result
Threat name:
Tofsee
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1170228
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 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: 803023 Sample: file.exe Startdate: 09/02/2023 Architecture: WINDOWS Score: 100 43 microsoft-com.mail.protection.outlook.com 2->43 51 Snort IDS alert for network traffic 2->51 53 Malicious sample detected (through community Yara rule) 2->53 55 Antivirus detection for dropped file 2->55 57 6 other signatures 2->57 8 yadojdst.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\...\yadojdst.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, 49704 RISS-ASRU Russian Federation 14->45 47 svartalfheim.top 90.156.230.141, 443, 49698, 49699 MASTERHOST-ASMoscowRussiaRU 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\...\yadojdst.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/c959fbe4d4693a1d2b862e8e907fd6e41296d26b02d49346d2ff9ff454990987/
Threat name:
Win32.Trojan.SmokeLoader
Create hunting rule
Status:
Malicious
First seen:
2023-02-09 16:03:06 UTC
File Type:
PE (Exe)
Extracted files:
13
AV detection:
21 of 26 (80.77%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=zfm7xzgune5b2k4gf2hja76w4qjjnutlalkjgrws76p7ivezbgdq._file
Verdict:
malicious
Similar samples:
076fad1ba0cad5735a07b221be9bf58a980d715e40bba0ac1eedc1daab7792f6
Tofsee
086b849fd2a196e3faf23c8501d1d4bacd3746cf381e123be3b06bf9eeb4d836
Tofsee
26694aa9bf49d5a0b4dd89b6c6cafabde3abb674ee302f5c35e6362ea6af9312
Tofsee
42fed7860a02492235a47075d5398f1dadfa417abd898b7d30583a28a33a0277
Tofsee
5851fa8ade62073e1e5a4652628a603e972a43211c25d1e952e005a8bf6d25d2
Tofsee
67809e134819e1cff6204c6a250687b83565404d8ef7842fed2ee72752eb47e8
Tofsee
81e6f34b95d2531910e46405352f443f60b472b2b43151361817b908ef29e27f
Tofsee
b583dfcecceda8ea2364b27f1a265c40f1186072c8d07bbb7ca8961d8fde4e65
Tofsee
d4ea6fc94f1dfe5ef26cea74ed0edbc0feec489327c51d0f28eab2e11a8f0b3c
Tofsee
e53f992620db1057ff88c79cfc46e0ab286c40593f85de120f06a7f554279d28
Tofsee
+ 2'862 additional samples on MalwareBazaar
Result
Malware family:
tofsee
Create hunting rule
Score:
  10/10
Tags:
family:tofsee evasion persistence trojan
Link:
https://tria.ge/reports/230209-thcj6aah72/
Behaviour
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Launches sc.exe
Suspicious use of SetThreadContext
Executes dropped EXE
Deletes itself
Creates new service(s)
Modifies Windows Firewall
Sets service image path in registry
Tofsee
Windows security bypass
Malware Config
C2 Extraction:
svartalfheim.top
jotunheim.name
Unpacked files
SH256 hash:
c959fbe4d4693a1d2b862e8e907fd6e41296d26b02d49346d2ff9ff454990987
MD5 hash:
828364f3bafcd843bc8199eb9d3abaea
SHA1 hash:
aff601d5f00072a9675cc16319acbdd82aece1d1
Link:
https://www.unpac.me/results/6450ef1c-68fe-433d-b77d-a4b21488bc76/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/c959fbe4d469/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/c959fbe4d4693a1d2b862e8e907fd6e41296d26b02d49346d2ff9ff454990987

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: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/362893/

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