MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4f8f35335dce9870e601b44c6d38a83cd2feaa081d7ae1b16c91258674e02630. 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: 17


Intelligence 17 IOCs YARA 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4f8f35335dce9870e601b44c6d38a83cd2feaa081d7ae1b16c91258674e02630
SHA3-384 hash: 4a6989abad8a7662a6651906e061be7b2654dd34c3f36467ee2a880e9c0024616fe41c690f50dac4520b3840bf4a8f35
SHA1 hash: 2918708c0c1eb1c9837a6b10415f5d6ed66507e0
MD5 hash: bcdf2cb247a60f66fe62f8aed2efcb1f
humanhash: rugby-thirteen-river-tennis
File name:file
Download: download sample
Signature Tofsee
Create hunting rule
File size:197'120 bytes
First seen:2023-03-11 17:42:32 UTC
Last seen:2023-03-11 19:32:20 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 498ce63ad5da17e4362994ba9a6fc26b (2 x Rhadamanthys, 1 x Tofsee, 1 x LaplasClipper)
ssdeep 3072:mx1qIXgWFcqfzgb7diGkvwRDk3RcimxnH6k3/m2iTxBMqX6se+TJ:WqUgWFc/FiGkv6kBc4k3/m1BMq
Threatray 359 similar samples on MalwareBazaar
TLSH T166149D12B3E16861E673CF319F3FC6E47A6FB8614E69636E22085B1F0EB11E1D562311
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 10d2c0e2c860604c (1 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 :
2
# of downloads :
220
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
tofsee
Create hunting rule
ID:
1
File name:
file
Verdict:
Malicious activity
Analysis date:
2023-03-11 17:45:17 UTC
Tags:
tofsee trojan miner
Link:
https://app.any.run/tasks/9fd5d01a-9371-4e5f-bd9f-ff1382cd1403

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/373599/
Detection(s):
SecuriteInfo.com.Variant.Babar.171140.4352.31238.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
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)
DNS request
Enabling autorun for a service
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
greyware packed shell32.dll
Link:
https://www.filescan.io/uploads/640cbda8b65c45d06f739522/reports/4079d6f2-16f7-410a-a349-f9ee98d8aad1/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/4f8f35335dce9870e601b44c6d38a83cd2feaa081d7ae1b16c91258674e02630
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/3abfe2fe-5eb5-4c26-a2c1-8320da0d49af
Result
Threat name:
Tofsee
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1191773
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: 824649 Sample: file.exe Startdate: 11/03/2023 Architecture: WINDOWS Score: 100 43 microsoft-com.mail.protection.outlook.com 2->43 49 Snort IDS alert for network traffic 2->49 51 Malicious sample detected (through community Yara rule) 2->51 53 Antivirus detection for dropped file 2->53 55 6 other signatures 2->55 8 esqgzxf.exe 2->8         started        11 file.exe 2 2->11         started        signatures3 process4 file5 57 Detected unpacking (changes PE section rights) 8->57 59 Detected unpacking (overwrites its own PE header) 8->59 61 Writes to foreign memory regions 8->61 67 2 other signatures 8->67 14 svchost.exe 1 8->14         started        41 C:\Users\user\AppData\Local\...\esqgzxf.exe, PE32 11->41 dropped 63 Uses netsh to modify the Windows network and firewall settings 11->63 65 Modifies the windows firewall 11->65 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 nidavellir.top 46.173.218.216, 443, 49697, 49698 GARANT-PARK-INTERNETRU Russian Federation 14->45 47 microsoft-com.mail.protection.outlook.com 52.101.40.29, 25, 49696 MICROSOFT-CORP-MSN-AS-BLOCKUS United States 14->47 69 System process connects to network (likely due to code injection or exploit) 14->69 71 Deletes itself after installation 14->71 39 C:\Windows\SysWOW64\...\esqgzxf.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/4f8f35335dce9870e601b44c6d38a83cd2feaa081d7ae1b16c91258674e02630/
Threat name:
Win32.Trojan.Privateloader
Create hunting rule
Status:
Malicious
First seen:
2023-03-11 17:44:29 UTC
File Type:
PE (Exe)
Extracted files:
30
AV detection:
20 of 24 (83.33%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=j6htkm25z2mhbzqbwrgg2ofihtjp5kqidv5odmlmsesym5haeyya._file
Verdict:
malicious
Similar samples:
3abf5e573cbcc7b375436931ff07be0d9d13085cf6a14f9cde285a83e7ff528e
Tofsee
45fced29713e8dc96972faeab4f21ec670543c252ed824b358294e9b8270e496
Tofsee
4fb79897fd57ac7d1724c92ef26e493e15d974f83c2c7f6e72af4f6e8084ff20
Tofsee
5b6e9f80c787e237f396735f48b3a2ccaeabe6e5c596693a34e7cb7a7bb4d123
Tofsee
7872562982688229ba9bcf6b09cd7282229da0b0690aec62c163e43fcb305631
Tofsee
cad1a1f826af74ab5fe83fe89ae39874b8443b7a85f6eaa6afe3d8c8cde80428
Tofsee
eeafd9d6aa2607575e05d0753c2ecc37710a9164fc5af4c9afa28c2d546e470b
Tofsee
f57855bf23ce70fccbad6dec4c7d9e97710f222f98dfa0141762d66e56b6192d
Tofsee
+ 349 additional samples on MalwareBazaar
Result
Malware family:
xmrig
Create hunting rule
Score:
  10/10
Tags:
family:tofsee family:xmrig evasion miner persistence trojan
Link:
https://tria.ge/reports/230311-waklxaaf68/
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:
nidavellir.top
jotunheim.name
Unpacked files
SH256 hash:
bfb026214b0a65f3363a1b88e1d5025b03dc8c0f5c11286b36ff724e38919a43
MD5 hash:
48504b19943816579be4a8784aac08d1
SHA1 hash:
56bd46c9efb18f8b4748dee08d85251e647a2a16
Detections:
Tofsee
Create hunting rule
win_tofsee_w0
Create hunting rule
Link:
https://www.unpac.me/results/e0ad1e2b-4ac4-4014-8090-c185a5f24cd9/
Parent samples :
cad1a1f826af74ab5fe83fe89ae39874b8443b7a85f6eaa6afe3d8c8cde80428
4f8f35335dce9870e601b44c6d38a83cd2feaa081d7ae1b16c91258674e02630
1f6a2ebd5e58a939503b1b51a6e22090e80bc39099f715852cb3719b32e4a7d1
adfb07f6f0a466bfa3ec21c93e946566fd52885319c318e7327cb10b20ba7cbb
2279dc10a3db2ec68f0040c03f81998168d0cd770340b0d49b5bfed5a92e634a
2ee64e188677e6544342a29562d04bcab608c528f91df42e09a6fb5c8a63b8ce
a2cbb1cf3dc6fbbefec090e40d8ee0eae32d7ebc552b69623aa87dae22527791
SH256 hash:
4f8f35335dce9870e601b44c6d38a83cd2feaa081d7ae1b16c91258674e02630
MD5 hash:
bcdf2cb247a60f66fe62f8aed2efcb1f
SHA1 hash:
2918708c0c1eb1c9837a6b10415f5d6ed66507e0
Link:
https://www.unpac.me/results/e0ad1e2b-4ac4-4014-8090-c185a5f24cd9/
Malware family:
XMRig
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/4f8f35335dce/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/4f8f35335dce9870e601b44c6d38a83cd2feaa081d7ae1b16c91258674e02630

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_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
  
URLhaus
https://urlhaus.abuse.ch/url/2513471/
Cape
Cape
https://www.capesandbox.com/analysis/373599/

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