MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3817fc0c10649ecb05697c3a4ddaa4b7ab5955e74d17638b16c1cb877b1b3d0e. 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: 10


Intelligence 10 IOCs YARA File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 3817fc0c10649ecb05697c3a4ddaa4b7ab5955e74d17638b16c1cb877b1b3d0e
SHA3-384 hash: ea3b0dc7e6aacf69d240ba4768c1234d5d4c3822dbfea17749b063bf013c91cb26f46f18b28efe9173b052124b59090a
SHA1 hash: 9ab7f95c5bbedcfff4f0e55fedec9e0f190fe30d
MD5 hash: 44c98faa6b3116de31be0bf4cedb13c3
humanhash: zebra-pennsylvania-west-six
File name:44c98faa6b3116de31be0bf4cedb13c3
Download: download sample
Signature Tofsee
Create hunting rule
File size:141'824 bytes
First seen:2021-09-23 12:32:12 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f7987bf55fcab080da60dcb9686a7f63 (9 x RedLineStealer, 3 x RaccoonStealer, 2 x Tofsee)
ssdeep 3072:9kNvizJ8YrnUIsaGooELIPGgEIIrm55jjMqXG4:9wil8YoInGxEwEIIAJ
Threatray 155 similar samples on MalwareBazaar
TLSH T16CD3BF2176E0C136E6F75A744878C7A44A7FF8336A76854F365022EE5F323D08A26367
File icon (PE):PE icon
dhash icon 1072c093b0381906 (22 x RedLineStealer, 22 x RaccoonStealer, 20 x Stop)
Reporter zbetcheckin
Tags:32 exe Tofsee

Intelligence

File Origin
# of uploads :
1
# of downloads :
697
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
44c98faa6b3116de31be0bf4cedb13c3
Verdict:
Malicious activity
Analysis date:
2021-09-23 12:34:20 UTC
Tags:
trojan tofsee miner
Link:
https://app.any.run/tasks/2296a0f6-02b3-4da4-ac96-358b32c0a5a1

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/190742/
Detection(s):
SecuriteInfo.com.W32.AIDetect.malware1.9112.1973.UNOFFICIAL
Create hunting rule

Malware family:
Tofsee
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/741b0831-117c-46ae-ba2e-d76a0cfc4ed7
Result
Threat name:
Tofsee
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/856769
Signature
Allocates memory in foreign processes
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
Found malware configuration
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
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:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 489197 Sample: RKBvyqk5el Startdate: 23/09/2021 Architecture: WINDOWS Score: 100 48 microsoft-com.mail.protection.outlook.com 2->48 56 Found malware configuration 2->56 58 Multi AV Scanner detection for submitted file 2->58 60 Yara detected Tofsee 2->60 62 6 other signatures 2->62 8 ixkgsrkw.exe 2->8         started        11 RKBvyqk5el.exe 2 2->11         started        14 svchost.exe 1 2->14         started        17 3 other processes 2->17 signatures3 process4 dnsIp5 68 Detected unpacking (changes PE section rights) 8->68 70 Detected unpacking (overwrites its own PE header) 8->70 72 Writes to foreign memory regions 8->72 78 2 other signatures 8->78 19 svchost.exe 1 8->19         started        46 C:\Users\user\AppData\Local\...\ixkgsrkw.exe, PE32 11->46 dropped 74 Uses netsh to modify the Windows network and firewall settings 11->74 76 Modifies the windows firewall 11->76 23 cmd.exe 1 11->23         started        26 netsh.exe 3 11->26         started        28 cmd.exe 2 11->28         started        30 3 other processes 11->30 54 192.168.2.1 unknown unknown 14->54 file6 signatures7 process8 dnsIp9 50 defeatwax.ru 193.56.146.188, 443, 49743, 49777 LVLT-10753US unknown 19->50 52 microsoft-com.mail.protection.outlook.com 40.93.207.1, 25, 49740 MICROSOFT-CORP-MSN-AS-BLOCKUS United States 19->52 64 System process connects to network (likely due to code injection or exploit) 19->64 66 Deletes itself after installation 19->66 44 C:\Windows\SysWOW64\...\ixkgsrkw.exe (copy), PE32 23->44 dropped 32 conhost.exe 23->32         started        34 conhost.exe 26->34         started        36 conhost.exe 28->36         started        38 conhost.exe 30->38         started        40 conhost.exe 30->40         started        42 conhost.exe 30->42         started        file10 signatures11 process12
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/3817fc0c10649ecb05697c3a4ddaa4b7ab5955e74d17638b16c1cb877b1b3d0e/
Threat name:
Win32.Backdoor.Tofsee
Create hunting rule
Status:
Malicious
First seen:
2021-09-23 12:33:06 UTC
AV detection:
19 of 28 (67.86%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=hal7ydaqmspmwbljpq5e3wvew6vvsvphjulwhcywyhfyo6y3huha._file
Verdict:
malicious
Similar samples:
0467d83ba3b0d1f7c09d3fa662383e261ea44ea866cdfa0c686eba4cc5a822f2
Tofsee
0c3080ef33448167fc2b858db5ec7b2e4705cb12ca57119088892459ea0cc832
Tofsee
151581dcdda0e678656486dd87d99553b5a0fbae63f7f8d265979064277c5978
Tofsee
395a803ba3e091e6ac2629c5591e6cd874f68332a436287d0121f5f21b3524e6
Tofsee
8fcb2057bdac3ba88cb811c44a0d79358075525506b1517c3e713aec8d31a666
Tofsee
accec2b9024faec177cce64e4c19665ec27722e1aa976704c1b9e29ed21100d6
Tofsee
ad97df5cdccad99b596aa311ad7e9f6f739657c59dd870334706d0e9796151e9
Tofsee
af21217ee5523873bc4ee3b262ce06a371a1095abfea9729e3413cf9da1a0cab
Tofsee
d14e8195937a6bd3ff1c8e25376f3cf6ccba3b373c894fb147912530f15b85db
Tofsee
de61df7a854557960a9ed5920fc201b1882b7850efcf85f3925a72eac4cfc531
Tofsee
+ 145 additional samples on MalwareBazaar
Result
Malware family:
xmrig
Create hunting rule
Score:
  10/10
Tags:
family:tofsee family:xmrig evasion miner persistence suricata trojan
Link:
https://tria.ge/reports/210923-pq7m2secdp/
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
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
suricata: ET MALWARE DNS Query Sinkhole Domain Various Families (Possible Infected Host)
xmrig
Unpacked files
SH256 hash:
167d2a327d3ef71d65ef0bc8e148ce24259bd8261b5d1bdd48a15ff3f58dd6da
MD5 hash:
a2fcec728cf62911fd07c5c5e0bf03e3
SHA1 hash:
529f1c41e1d8cff13032c3a83eb5bdb0641c1e69
Detections:
win_tofsee_w0
Create hunting rule
Link:
https://www.unpac.me/results/fa71bb31-fce4-4d74-80b3-0f836a54ca95/
Parent samples :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 hash:
3817fc0c10649ecb05697c3a4ddaa4b7ab5955e74d17638b16c1cb877b1b3d0e
MD5 hash:
44c98faa6b3116de31be0bf4cedb13c3
SHA1 hash:
9ab7f95c5bbedcfff4f0e55fedec9e0f190fe30d
Link:
https://www.unpac.me/results/fa71bb31-fce4-4d74-80b3-0f836a54ca95/
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/3817fc0c10649ecb05697c3a4ddaa4b7ab5955e74d17638b16c1cb877b1b3d0e

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Web download

Tofsee

Executable exe 3817fc0c10649ecb05697c3a4ddaa4b7ab5955e74d17638b16c1cb877b1b3d0e

(this sample)

  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/190742/

Comments


Avatar
zbet commented on 2021-09-23 12:32:14 UTC

url : hxxp://193.56.146.41:9080/a.php