MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 bb56a44a1aecdb49ea4655e4fb4f5d62b6f44938457b704b6154256a3d387b1b. 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: 9


Intelligence 9 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: bb56a44a1aecdb49ea4655e4fb4f5d62b6f44938457b704b6154256a3d387b1b
SHA3-384 hash: 8ad8cde9650e315bdcc72a5a5684379c1ea39ca84a64ebd487b042d7fb3b8fba0f4e5efe8b50235bb7355bfbb92704e0
SHA1 hash: a844317f9bdf6b5024225e80e5402fd0a6a086a0
MD5 hash: b2e1156c89468ab56a6ed5376b5cbce2
humanhash: island-music-early-carbon
File name:bb56a44a1aecdb49ea4655e4fb4f5d62b6f44938457b704b6154256a3d387b1b
Download: download sample
Signature Tofsee
Create hunting rule
File size:11'041'792 bytes
First seen:2020-11-11 11:39:37 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 0bdef4d92a94790d7d279561a490c5bb (45 x Tofsee, 26 x CoinMiner)
ssdeep 6144:H8VVCPvruN/WpIozzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzP:S8rE/Wp
Threatray 46 similar samples on MalwareBazaar
TLSH C3B62A29847B28F5C670107CF78C7B7EAAFD06F49EB4015B689C97C1E4289D454ECAA3
Reporter seifreed
Tags:Tofsee

Intelligence

File Origin
# of uploads :
1
# of downloads :
547
Origin country :
n/a
Vendor Threat Intelligence
Detection(s):
Win.Trojan.Tofsee-6840338-0
Create hunting rule

Win.Trojan.Tofsee-7102058-0
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
Launching the process to change the firewall settings
Creating a process from a recently created file
DNS request
Creating a file in the Windows subdirectories
Sending a custom TCP request
Sending an HTTP GET request
Enabling autorun for a service
Sending a TCP request to an infection source
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.
Result
Threat name:
Tofsee Xmrig
Create hunting rule
Detection:
malicious
Classification:
troj.evad.mine
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/531867
Signature
Allocates memory in foreign processes
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Contains functionality to identify kernel process list (PsInitialSystemProcess)
Contains functionality to registers a callback to get notified when the system is suspended or resumed (often done by Miners)
Creates files in alternative data streams (ADS)
Deletes itself after installation
Detected Stratum mining protocol
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
Sigma detected: Suspicious Svchost Process
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: 315034 Sample: pgSO2HjkTn Startdate: 12/11/2020 Architecture: WINDOWS Score: 100 53 microsoft-com.mail.protection.outlook.com 2->53 55 iv0001-npxs01001-00.auth.np.ac.playstation.net 2->55 57 5 other IPs or domains 2->57 77 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->77 79 Malicious sample detected (through community Yara rule) 2->79 81 Antivirus detection for dropped file 2->81 83 12 other signatures 2->83 9 mpxxvtxg.exe 2->9         started        12 pgSO2HjkTn.exe 2 2->12         started        15 svchost.exe 9 1 2->15         started        signatures3 process4 dnsIp5 93 Writes to foreign memory regions 9->93 95 Allocates memory in foreign processes 9->95 97 Injects a PE file into a foreign processes 9->97 18 svchost.exe 3 1 9->18         started        51 C:\Users\user\AppData\Local\...\mpxxvtxg.exe, PE32 12->51 dropped 23 netsh.exe 3 12->23         started        25 cmd.exe 1 12->25         started        27 cmd.exe 2 12->27         started        29 3 other processes 12->29 65 127.0.0.1 unknown unknown 15->65 file6 signatures7 process8 dnsIp9 59 185.253.217.20, 420, 49728 PINDC-ASRU Ukraine 18->59 61 85.114.134.88, 484, 49721, 49759 MYLOC-ASIPBackboneofmyLocmanagedITAGDE Germany 18->61 63 19 other IPs or domains 18->63 49 C:\Windows\SysWOW64\...\systemprofile:.repos, data 18->49 dropped 85 System process connects to network (likely due to code injection or exploit) 18->85 87 Creates files in alternative data streams (ADS) 18->87 89 Contains functionality to identify kernel process list (PsInitialSystemProcess) 18->89 91 3 other signatures 18->91 31 svchost.exe 1 18->31         started        35 conhost.exe 23->35         started        37 conhost.exe 25->37         started        39 conhost.exe 27->39         started        41 conhost.exe 29->41         started        43 conhost.exe 29->43         started        45 conhost.exe 29->45         started        file10 signatures11 process12 dnsIp13 67 ip02.gntl.co.uk 83.151.238.34, 40005, 49737 CERBERUSNETWORKS-ASGB United Kingdom 31->67 69 msr.pool.gntl.co.uk 31->69 71 pool.gntl.co.uk 31->71 73 System process connects to network (likely due to code injection or exploit) 31->73 47 conhost.exe 31->47         started        signatures14 75 Detected Stratum mining protocol 67->75 process15
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/bb56a44a1aecdb49ea4655e4fb4f5d62b6f44938457b704b6154256a3d387b1b/
Threat name:
Win32.Backdoor.Tofsee
Create hunting rule
Status:
Malicious
First seen:
2020-11-11 11:46:20 UTC
AV detection:
27 of 29 (93.10%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=xnlkisq25tnut2sgkxspwt25mk3pisjyiv5xas3bkqswupjypmnq._file
Verdict:
malicious
Similar samples:
250e0338d50cf0cc388cdf0732d6a58576995ac5d74bebd9d45632450413c9a0
Tofsee
575a4ea0536e74d52c4dbd55a5f55563cf04e9f553d9a433caf0dc651800d022
Tofsee
8d64110a77ed9fe2d9454816668d95ed000442a34bb558ca0447ebd8c08b30ba
Tofsee
90ab735f3e99db675bbc2913b1f34ef7bd72636222ae8b2a2b5e4de01c2e2dea
Tofsee
af21217ee5523873bc4ee3b262ce06a371a1095abfea9729e3413cf9da1a0cab
Tofsee
bac50bcd3650dd1fe39d3bb59c4501e14c3f95a52ed163d3fc2270a71946d309
Tofsee
ca1a4c8a164422ed34687440e215828aac50681c7f9da29ff95d42a28b6af762
Tofsee
d75741013d7ee0596d2fc4d94087a29fe6b8da3700318f011fb6b7e1615eef21
Tofsee
dee44d528a9e1a209ce1033d466b35037be59fecf42eb7671d71aefaaeb61e84
Tofsee
f6a6b1887797aa19c0eeb48b1c615d1833d2d309c92688821b2405e0fc4432ec
Tofsee
+ 36 additional samples on MalwareBazaar
Result
Malware family:
tofsee
Create hunting rule
Score:
  10/10
Tags:
family:tofsee evasion persistence trojan
Link:
https://tria.ge/reports/201111-m3kagztelj/
Behaviour
Modifies data under HKEY_USERS
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Launches sc.exe
Drops file in System32 directory
Modifies service
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
Tofsee
Windows security bypass
Unpacked files
SH256 hash:
bb56a44a1aecdb49ea4655e4fb4f5d62b6f44938457b704b6154256a3d387b1b
MD5 hash:
b2e1156c89468ab56a6ed5376b5cbce2
SHA1 hash:
a844317f9bdf6b5024225e80e5402fd0a6a086a0
Detections:
win_tofsee_w0
Create hunting rule
Link:
https://www.unpac.me/results/5d4b879f-a007-4662-b134-3998a60984f0/
Please note that we are no longer able to provide a coverage score for Virus Total.

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:MAL_XMR_Miner_May19_1
Create hunting rule
Author:Florian Roth
Description:Detects Monero Crypto Coin Miner
Reference:https://www.guardicore.com/2019/05/nansh0u-campaign-hackers-arsenal-grows-stronger/
Rule name:MINER_monero_mining_detection
Create hunting rule
Author:Christiaan Beek | McAfee ATR Team
Description:Monero mining software
Rule name:win_tofsee_w0
Create hunting rule
Author:akrasuski1
Rule name:XMRIG_Miner
Create hunting rule
Rule name:XMRIG_Monero_Miner
Create hunting rule
Author:Florian Roth
Description:Detects Monero mining software
Reference:https://github.com/xmrig/xmrig/releases

File information

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

  
Delivery method
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