MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 b9291afeb5418b38950175e191ba50b942bf18824ec4b853d9b6a1ce0f6d6f51. 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
| SHA256 hash: | b9291afeb5418b38950175e191ba50b942bf18824ec4b853d9b6a1ce0f6d6f51 |
|---|---|
| SHA3-384 hash: | 73905e71ecf2b2a5b5fa7448d3751af7953fe8eb8b8453e95d11d13d88f64467e9b1f9ee0326f955b632431ba5fdb47f |
| SHA1 hash: | b1f5f8c246ee482b58f8ecaa181465427a023753 |
| MD5 hash: | 2ae52ed06d8466acf2ba526c9808c44c |
| humanhash: | diet-seven-apart-helium |
| File name: | 2ae52ed06d8466acf2ba526c9808c44c |
| Download: | download sample |
| Signature | Tofsee |
| File size: | 257'024 bytes |
| First seen: | 2022-04-05 05:34:48 UTC |
| Last seen: | 2022-04-05 06:44:15 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 25245420ce2e5010c32179ae5d5b5793 (4 x Loki, 2 x Tofsee, 2 x RedLineStealer) |
| ssdeep | 3072:N6c7iy7AE/SNK6rrDRFPzkkvLnnWQEkoJGvxaR8/5im5WonLrXBfbULGDWGc55Rk:Nr6/nVFzXLnnW5yvxBWonHdbULd5 |
| Threatray | 250 similar samples on MalwareBazaar |
| TLSH | T192448D00BBA0C035E1B716F449B997ACB93E7AB15B3494CB62D51AEE17346E1EC3131B |
| File icon (PE): |  |
| dhash icon | b6dacabecee6baa6 (72 x Stop, 68 x RedLineStealer, 55 x Smoke Loader) |
| Reporter |  zbetcheckin |
| Tags: | 32 exe Tofsee |
Intelligence
File Origin
# of uploads :
2
# of downloads :
558
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Tofsee
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
Creating a file
Launching the process to change the firewall settings
Creating a service
Creating a process from a recently created file
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
Result
Malware family:
n/a
Score:
3/10
Tags:
n/a
Behaviour
SystemUptime
MeasuringTime
CheckCmdLine
EvasionGetTickCount
EvasionQueryPerformanceCounter
Verdict:
Malicious
Threat level:
10/10
Confidence:
100%
Tags:
greyware packed
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
Verdict:
Malicious
Result
Threat name:
Tofsee
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Signature
Allocates memory in foreign processes
Antivirus detection for dropped file
C2 URLs / IPs found in malware configuration
Changes security center settings (notifications, updates, antivirus, firewall)
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
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 submitted file
Sigma detected: Copying Sensitive Files with Credential Data
Sigma detected: Suspect Svchost Activity
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:
Threat name:
Win32.Backdoor.Tofsee
Status:
Malicious
First seen:
2022-04-05 05:35:07 UTC
File Type:
PE (Exe)
Extracted files:
5
AV detection:
20 of 26 (76.92%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Similar samples:
+ 240 additional samples on MalwareBazaar
Result
Malware family:
tofsee
Score:
10/10
Tags:
family:tofsee evasion persistence trojan
Behaviour
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
Launches sc.exe
Suspicious use of SetThreadContext
Checks computer location settings
Creates new service(s)
Executes dropped EXE
Modifies Windows Firewall
Tofsee
Malware Config
C2 Extraction:
niflheimr.cn
jotunheim.name
jotunheim.name
Unpacked files
SH256 hash:
2c7da5333ec8e2d75607b54c2caaab4ea3e1805b455d2e8cb8faab397033c6c8
MD5 hash:
7f2e04283f4a0c58b5ea10725aeab839
SHA1 hash:
8e0eeac8abd5f310561bcae01d571de2f06bc0a3
Detections:
win_tofsee_w0
SH256 hash:
b9291afeb5418b38950175e191ba50b942bf18824ec4b853d9b6a1ce0f6d6f51
MD5 hash:
2ae52ed06d8466acf2ba526c9808c44c
SHA1 hash:
b1f5f8c246ee482b58f8ecaa181465427a023753
Verdict:
Malicious
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
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: | MALWARE_Win_Tofsee |
|---|---|
| Author: | ditekSHen |
| Description: | Detects Tofsee |
| Rule name: | win_tofsee_w0 |
|---|---|
| Author: | akrasuski1 |
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
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