MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c3885fb6e521c358f6058bf09ab7835fc7f0aa71502da2cc7e44701224bfec3a. 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: c3885fb6e521c358f6058bf09ab7835fc7f0aa71502da2cc7e44701224bfec3a
SHA3-384 hash: c86229793ecece141bbd7c1c6d30bc17b5930992192a9dd19720dfe3b4ebe1bbd11c5f70e2f623d5ec21bcbacc1009f9
SHA1 hash: 7e0e19a2df13d3b18812335c67a4cd28b08f9a5d
MD5 hash: f1f68a2fba5398ecd218775828125efb
humanhash: yellow-lima-zulu-beryllium
File name:f1f68a2fba5398ecd218775828125efb
Download: download sample
Signature Tofsee
Create hunting rule
File size:295'424 bytes
First seen:2021-10-01 02:31:16 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 7fd6de8b7ac14820eae90d7350ac48ac (5 x RaccoonStealer, 4 x RedLineStealer, 3 x Tofsee)
ssdeep 6144:RFC+u3cY+bxI9gpMBUqJL6SLOOhxxdeTr/ekI:uu9Ip3L68zxd6L
Threatray 160 similar samples on MalwareBazaar
TLSH T10F54AE083282CFF2D67101F1AB96C7E0092DBD6D2E57765F3B99335EBE3D2A19611242
File icon (PE):PE icon
dhash icon 4839b234e8c38890 (121 x RaccoonStealer, 54 x RedLineStealer, 51 x ArkeiStealer)
Reporter zbetcheckin
Tags:32 exe Tofsee

Intelligence

File Origin
# of uploads :
1
# of downloads :
764
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
f1f68a2fba5398ecd218775828125efb
Verdict:
Malicious activity
Analysis date:
2021-10-01 02:33:09 UTC
Tags:
trojan tofsee miner
Link:
https://app.any.run/tasks/d6052314-bf29-4c1b-90b9-3fb69b73d9ea

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/193820/
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 system32 subdirectory
Launching a process
Creating a service
Launching a service
Creating a process from a recently created file
DNS request
Connection attempt
Creating a file
Sending a custom TCP request
Sending an HTTP GET request
Enabling autorun for a service
Query of malicious DNS domain
Connection attempt to an infection source
Sending a TCP request to an infection source
Unauthorized injection to a system process
Deleting of the original file
Malware family:
Tofsee
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/bb8c9a9e-ee6a-474c-b3ea-39e7a102fc2f
Result
Threat name:
Tofsee
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/862414
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 malware configuration
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
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: 494842 Sample: 7UH2QRd4JK Startdate: 01/10/2021 Architecture: WINDOWS Score: 100 51 microsoft-com.mail.protection.outlook.com 2->51 57 Found malware configuration 2->57 59 Antivirus detection for dropped file 2->59 61 Multi AV Scanner detection for submitted file 2->61 63 8 other signatures 2->63 8 pernzyrd.exe 2->8         started        11 7UH2QRd4JK.exe 2 2->11         started        14 svchost.exe 2->14         started        16 7 other processes 2->16 signatures3 process4 file5 69 Detected unpacking (changes PE section rights) 8->69 71 Detected unpacking (overwrites its own PE header) 8->71 73 Writes to foreign memory regions 8->73 81 2 other signatures 8->81 18 svchost.exe 1 8->18         started        49 C:\Users\user\AppData\Local\...\pernzyrd.exe, PE32 11->49 dropped 75 Uses netsh to modify the Windows network and firewall settings 11->75 77 Modifies the windows firewall 11->77 22 cmd.exe 1 11->22         started        25 netsh.exe 3 11->25         started        27 cmd.exe 2 11->27         started        31 3 other processes 11->31 79 Changes security center settings (notifications, updates, antivirus, firewall) 14->79 29 MpCmdRun.exe 1 14->29         started        signatures6 process7 dnsIp8 53 defeatwax.ru 193.56.146.188, 443, 49746, 49819 LVLT-10753US unknown 18->53 55 microsoft-com.mail.protection.outlook.com 52.101.24.0, 25, 49745 MICROSOFT-CORP-MSN-AS-BLOCKUS United States 18->55 65 System process connects to network (likely due to code injection or exploit) 18->65 67 Deletes itself after installation 18->67 47 C:\Windows\SysWOW64\...\pernzyrd.exe (copy), PE32 22->47 dropped 33 conhost.exe 22->33         started        35 conhost.exe 25->35         started        37 conhost.exe 27->37         started        39 conhost.exe 29->39         started        41 conhost.exe 31->41         started        43 conhost.exe 31->43         started        45 conhost.exe 31->45         started        file9 signatures10 process11
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/c3885fb6e521c358f6058bf09ab7835fc7f0aa71502da2cc7e44701224bfec3a/
Threat name:
Win32.Ransomware.LockbitCrypt
Create hunting rule
Status:
Malicious
First seen:
2021-10-01 00:45:38 UTC
AV detection:
16 of 45 (35.56%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=yoef7nxfehbvr5qfrpyjvn4dl7d7bktrkaw2ftd6irybejf75q5a._file
Verdict:
malicious
Similar samples:
0467d83ba3b0d1f7c09d3fa662383e261ea44ea866cdfa0c686eba4cc5a822f2
Tofsee
1ae374502df9e63ab3d4b3bc2611b0758f97285c3eb49d58713fd654ed9ab756
Tofsee
50ed7ff89205b20b7aa7538438b2af93bbf61bc9488f5eb7e3dc673b0579a2f2
Tofsee
6232bd70528f163b7aa8e8d76f6c4e63a0660eb112eabf2cc1859cc9e83ca755
Tofsee
8325ddbf8fc654039273c60aee91332ebf8d8896da1109f6abac422f910bddf9
Tofsee
accec2b9024faec177cce64e4c19665ec27722e1aa976704c1b9e29ed21100d6
Tofsee
d14e8195937a6bd3ff1c8e25376f3cf6ccba3b373c894fb147912530f15b85db
Tofsee
eb7d2f18d5fc15bbdeb4da2d297db7ec72004f54a4a6ef8194c23d0651538a3f
Tofsee
f9cd208d6510eb375673db4aa3f35d77f1cbcf3776f97cb1761d65425d7bf70e
Tofsee
+ 150 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/211001-c1a1lsagbq/
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/3e63cd1e-b231-4baa-8748-dd130bd50a2f/
Parent samples :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 hash:
c3885fb6e521c358f6058bf09ab7835fc7f0aa71502da2cc7e44701224bfec3a
MD5 hash:
f1f68a2fba5398ecd218775828125efb
SHA1 hash:
7e0e19a2df13d3b18812335c67a4cd28b08f9a5d
Link:
https://www.unpac.me/results/3e63cd1e-b231-4baa-8748-dd130bd50a2f/
Malware family:
XMRIG
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/c3885fb6e521/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/c3885fb6e521c358f6058bf09ab7835fc7f0aa71502da2cc7e44701224bfec3a

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 c3885fb6e521c358f6058bf09ab7835fc7f0aa71502da2cc7e44701224bfec3a

(this sample)

  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/193820/

Comments


Avatar
zbet commented on 2021-10-01 02:31:17 UTC

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