MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 66d8a58d332aad489374ab5678d81540b2f3c838c2d4078abd99e28fe6a69fb0. 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: 8


Intelligence 8 IOCs YARA 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 66d8a58d332aad489374ab5678d81540b2f3c838c2d4078abd99e28fe6a69fb0
SHA3-384 hash: aae78540ac7ff678b438b0b46a56cfc6906fd38a5da2ee0d95333663ddbb59941debf89dd531d85b555b5fd26e335145
SHA1 hash: 4c189ab030fb80f56cad645b70146a5d934bf902
MD5 hash: 4d6fea999911d49799b02a47721a5684
humanhash: jig-violet-colorado-chicken
File name:66d8a58d332aad489374ab5678d81540b2f3c838c2d4078abd99e28fe6a69fb0
Download: download sample
Signature Tofsee
Create hunting rule
File size:10'860'032 bytes
First seen:2020-11-12 14:04:18 UTC
Last seen:2024-07-24 15:15:38 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 300ecc0abea8945fcd3b21c86c177b56 (8 x Tofsee)
ssdeep 196608:i66666666666666666666666666666666666666666666666666666666666666W:
Threatray 54 similar samples on MalwareBazaar
TLSH BBB6D1318F048CA8FD16E639AF30F6635B91F4929EFA970729E5A1B34DD62E09DC01C5
Reporter seifreed
Tags:Tofsee

Intelligence

File Origin
# of uploads :
2
# of downloads :
781
Origin country :
n/a
Vendor Threat Intelligence
Detection(s):
Win.Packed.Barys-7111571-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
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
Deleting of the original file
Adding exclusions to Windows Defender
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.
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/66d8a58d332aad489374ab5678d81540b2f3c838c2d4078abd99e28fe6a69fb0/
Threat name:
Win32.Backdoor.Tofsee
Create hunting rule
Status:
Malicious
First seen:
2020-11-12 14:06:16 UTC
AV detection:
27 of 29 (93.10%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=m3mkldjtfkwure3uvnlhrwaviczphsbyylkapcv5thri7zvgt6ya._file
Verdict:
malicious
Similar samples:
0c3080ef33448167fc2b858db5ec7b2e4705cb12ca57119088892459ea0cc832
Tofsee
0e4e902b30a99c179a586c7fd3e27b1fe0b7f1cf5397cb4ee9f056a4fa547b5b
Tofsee
237e4c4b7b31d6fb1cf88cc07d2c846044e87854a04c3850dd9a65970787508f
Tofsee
575e8f38cfb2015941a558082390e1f02c7318bd0d6b82261065bd3839123bf8
Tofsee
9919830976415014ee79a70a30a9831ed5c97207318b976bca2781f8354a1442
Tofsee
af21217ee5523873bc4ee3b262ce06a371a1095abfea9729e3413cf9da1a0cab
Tofsee
ba227cfc4b73372ffcd726cf935645bd691e4e6c084eade585f73e15d1f649aa
Tofsee
bf036cfa9246486e80f39515cba5fcfddbd00e917d88a398ca2d2ac9187a8273
Tofsee
cdbda4f45e8cb4d6117bcd21304c66a78bcb73f840f48d8e523e76e5b0b57582
Tofsee
f5c60cf3334fc3093cb2b7b6bcfa480bf87a74b4edd8830b97c1ee3b3e66cefd
Tofsee
+ 44 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  10/10
Tags:
evasion persistence trojan
Link:
https://tria.ge/reports/201112-s79sej4wga/
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
Sets service image path in registry
Windows security bypass
Unpacked files
SH256 hash:
66d8a58d332aad489374ab5678d81540b2f3c838c2d4078abd99e28fe6a69fb0
MD5 hash:
4d6fea999911d49799b02a47721a5684
SHA1 hash:
4c189ab030fb80f56cad645b70146a5d934bf902
Link:
https://www.unpac.me/results/522fdbdd-fe38-4b05-bf37-c9521199ffad/
SH256 hash:
717ad0e257ba96664a10c4a0cd95a33da1dc56874a7c0d107bda35c42340f93e
MD5 hash:
1833ef9a070bdfe6cdbaba2f5fe922ca
SHA1 hash:
3ab9e23c66c7a468d9e0df33255421589b42426c
Detections:
win_tofsee_w0
Create hunting rule
Link:
https://www.unpac.me/results/522fdbdd-fe38-4b05-bf37-c9521199ffad/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Nymaim
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/66d8a58d332aad489374ab5678d81540b2f3c838c2d4078abd99e28fe6a69fb0

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