MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 6a6c76468f25ca6d92463cc715fe615b2b449468a85e9c183693d8ea5a70fff1. 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: 12


Intelligence 12 IOCs YARA 1 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 6a6c76468f25ca6d92463cc715fe615b2b449468a85e9c183693d8ea5a70fff1
SHA3-384 hash: 808a18ff7e89ffe155beeabe27fdf408de417ffdc4f332073e8483d6204bb66ab12b3569cf7e2146784c4dc5fdcb1697
SHA1 hash: e1cdeb1061c6770b619412e5f06dd73121354e74
MD5 hash: 26a5a30af2a8f19775fb79d1679052e6
humanhash: eight-zebra-triple-princess
File name:26a5a30af2a8f19775fb79d1679052e6
Download: download sample
Signature Tofsee
Create hunting rule
File size:240'640 bytes
First seen:2021-08-11 22:21:57 UTC
Last seen:2021-08-11 22:46:02 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash d3a683e5c9bc8c05c0c2f946c056969b (2 x RaccoonStealer, 1 x Smoke Loader, 1 x ArkeiStealer)
ssdeep 3072:RHYT/V2WmOfWSnTEXvoH8Gz5sFhQ/XScsYh6gSVywo3c+:RHa5mO//H8XjiC7knGyHM
Threatray 127 similar samples on MalwareBazaar
TLSH T14A34BE113DBCF872D4850A305862CBA42A6FBC607A64014B7B9D3B6FEF783D1567634A
dhash icon 4839b2b4e8c38890 (137 x RaccoonStealer, 37 x Smoke Loader, 30 x RedLineStealer)
Reporter zbetcheckin
Tags:32 exe Tofsee

Intelligence

File Origin
# of uploads :
2
# of downloads :
546
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
26a5a30af2a8f19775fb79d1679052e6
Verdict:
Malicious activity
Analysis date:
2021-08-11 22:28:06 UTC
Tags:
miner
Link:
https://app.any.run/tasks/069980f0-7b82-4dfd-891d-cd33f279646d

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/178406/
Detection(s):
SecuriteInfo.com.Variant.Fragtor.3802.17838.14139.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
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
Sending a UDP request
DNS request
Connection attempt
Sending a custom TCP request
Creating a file in the Windows subdirectories
Sending an HTTP GET request
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.
Malware family:
Tofsee
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/e03ec210-7a83-4c03-9275-e27339d6a356
Result
Threat name:
Tofsee Xmrig
Create hunting rule
Detection:
malicious
Classification:
spre.troj.evad.mine
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/831291
Signature
Allocates memory in foreign processes
Antivirus detection for dropped file
Creates files in alternative data streams (ADS)
Deletes itself after installation
Detected Stratum mining protocol
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 strings related to Crypto-Mining
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
Performs DNS queries to domains with low reputation
Send many emails (e-Mail Spam)
Sigma detected: Copying Sensitive Files with Credential Data
Sigma detected: Suspect Svchost Activity
Sigma detected: Suspicious Svchost Process
Sigma detected: Xmrig
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
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
Yara detected Xmrig cryptocurrency miner
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 463722 Sample: XK7H3egMcR Startdate: 12/08/2021 Architecture: WINDOWS Score: 100 57 mta7.am0.yahoodns.net 2->57 59 www.instagram.com 2->59 61 114 other IPs or domains 2->61 71 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->71 73 Sigma detected: Xmrig 2->73 75 Malicious sample detected (through community Yara rule) 2->75 79 13 other signatures 2->79 8 cuzzgysw.exe 2->8         started        11 XK7H3egMcR.exe 2 2->11         started        14 svchost.exe 1 2->14         started        17 6 other processes 2->17 signatures3 77 System process connects to network (likely due to code injection or exploit) 59->77 process4 dnsIp5 91 Detected unpacking (changes PE section rights) 8->91 93 Detected unpacking (overwrites its own PE header) 8->93 95 Writes to foreign memory regions 8->95 101 2 other signatures 8->101 19 svchost.exe 5 1 8->19         started        53 C:\Users\user\AppData\Local\...\cuzzgysw.exe, PE32 11->53 dropped 97 Uses netsh to modify the Windows network and firewall settings 11->97 99 Modifies the windows firewall 11->99 24 cmd.exe 1 11->24         started        26 sc.exe 1 11->26         started        28 netsh.exe 3 11->28         started        30 3 other processes 11->30 69 127.0.0.1 unknown unknown 14->69 file6 signatures7 process8 dnsIp9 63 192.162.246.7, 431 DATACHEAP-LLC-ASRU Russian Federation 19->63 65 mta7.am0.yahoodns.net 19->65 67 130 other IPs or domains 19->67 49 C:\Windows\SysWOW64\...\systemprofile:.repos, data 19->49 dropped 81 System process connects to network (likely due to code injection or exploit) 19->81 83 Creates files in alternative data streams (ADS) 19->83 85 Performs DNS queries to domains with low reputation 19->85 89 2 other signatures 19->89 32 svchost.exe 19->32         started        51 C:\Windows\SysWOW64\...\cuzzgysw.exe (copy), PE32 24->51 dropped 35 conhost.exe 24->35         started        37 conhost.exe 26->37         started        39 conhost.exe 26->39         started        41 conhost.exe 28->41         started        43 conhost.exe 30->43         started        45 conhost.exe 30->45         started        47 conhost.exe 30->47         started        file10 87 Detected Stratum mining protocol 63->87 signatures11 process12 dnsIp13 55 fastpool.xyz 213.91.128.133, 10060, 49772 BTC-ASBULGARIABG Bulgaria 32->55
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/6a6c76468f25ca6d92463cc715fe615b2b449468a85e9c183693d8ea5a70fff1/
Threat name:
Win32.Trojan.Fragtor
Create hunting rule
Status:
Malicious
First seen:
2021-08-11 22:22:06 UTC
AV detection:
20 of 28 (71.43%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=njwhmrupexfg3esghtdrl7tblmvujfdivbpjygbwspmouwtq77yq._file
Verdict:
malicious
Similar samples:
0c3080ef33448167fc2b858db5ec7b2e4705cb12ca57119088892459ea0cc832
Tofsee
170ddb2583efd2402e84a7eb2c48754d978c8862e5c033fef9b7df34eadceb52
Tofsee
17831d6b96a1d60752b7031cf6307eb2ce6db23204991b7c6411f50f0ee99621
Tofsee
587f79f301d6ca9ad6a02642cf6ebfbce12b3eaa524ecd67834ca1314447c4da
Tofsee
59c50a429ba27538378b98c12fc53f34883c9a10c01329d07c3a56de11f09e46
Tofsee
8d64110a77ed9fe2d9454816668d95ed000442a34bb558ca0447ebd8c08b30ba
Tofsee
8fcb2057bdac3ba88cb811c44a0d79358075525506b1517c3e713aec8d31a666
Tofsee
90ab735f3e99db675bbc2913b1f34ef7bd72636222ae8b2a2b5e4de01c2e2dea
Tofsee
a8fd30b03500b24c3f28f24919bbad05355c837271fb4c49f6fc495afe11b9b1
Tofsee
af21217ee5523873bc4ee3b262ce06a371a1095abfea9729e3413cf9da1a0cab
Tofsee
+ 117 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/210811-ssbvr7sj4e/
Behaviour
Modifies data under HKEY_USERS
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Launches sc.exe
Drops file in System32 directory
Suspicious use of SetThreadContext
Looks up external IP address via web service
Deletes itself
Creates new service(s)
Executes dropped EXE
Modifies Windows Firewall
Sets service image path in registry
XMRig Miner Payload
Tofsee
Windows security bypass
xmrig
Unpacked files
SH256 hash:
5596604c1864dd894c7209cc954a5c57374c0c54a5d0df5d1d4e7e3c5aaf6bd8
MD5 hash:
966d7a43ed4feeb7f8a9eb536e94b7c1
SHA1 hash:
fea8f18b4799df4f2151e4396f5fcac010f06274
Detections:
win_tofsee_w0
Create hunting rule
Link:
https://www.unpac.me/results/22ec94b6-3730-4521-8ee6-1cb40e9cc56a/
Parent samples :
6a6c76468f25ca6d92463cc715fe615b2b449468a85e9c183693d8ea5a70fff1
700f94a34591e321bba41a65fe6ad2d273d245381a64b8733898804c286ce4a8
07056777e640806a058f582772f441ff608ff7b1f8bd69d20943acf35b266a2d
1a233cd70753a0c450148f0df3dc5881ef7b5bc7449a2da7da4bffa7f3d959b4
1ae374502df9e63ab3d4b3bc2611b0758f97285c3eb49d58713fd654ed9ab756
e87a5c719ac7af99f1478732889d5df0a275315b42b3b9aecc8b91333bd9c0af
SH256 hash:
6a6c76468f25ca6d92463cc715fe615b2b449468a85e9c183693d8ea5a70fff1
MD5 hash:
26a5a30af2a8f19775fb79d1679052e6
SHA1 hash:
e1cdeb1061c6770b619412e5f06dd73121354e74
Link:
https://www.unpac.me/results/22ec94b6-3730-4521-8ee6-1cb40e9cc56a/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/6a6c76468f25/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/6a6c76468f25ca6d92463cc715fe615b2b449468a85e9c183693d8ea5a70fff1

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.

Web download

Tofsee

Executable exe 6a6c76468f25ca6d92463cc715fe615b2b449468a85e9c183693d8ea5a70fff1

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/1526029/
Cape
Cape
https://www.capesandbox.com/analysis/178406/

Comments


Avatar
zbet commented on 2021-08-11 22:21:58 UTC

url : hxxp://95.213.144.186:8080/3.php