MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 bac50bcd3650dd1fe39d3bb59c4501e14c3f95a52ed163d3fc2270a71946d309. 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


CoinMiner


Vendor detections: 9


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

SHA256 hash: bac50bcd3650dd1fe39d3bb59c4501e14c3f95a52ed163d3fc2270a71946d309
SHA3-384 hash: 085dbef4ad64a7424618b58eeecc0ff0bb3484aba01b5d75e166c36dacecaca52978914e0f484f1c22bac084e5e12d45
SHA1 hash: b94f29ba31f1df91cf7f89269e5c8fab71727186
MD5 hash: 4b9e84f291c8f5dd74af3a45577b4099
humanhash: butter-sixteen-aspen-mirror
File name:bac50bcd3650dd1fe39d3bb59c4501e14c3f95a52ed163d3fc2270a71946d309
Download: download sample
Signature CoinMiner
Create hunting rule
File size:10'980'352 bytes
First seen:2020-11-11 11:34:13 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 0bdef4d92a94790d7d279561a490c5bb (45 x Tofsee, 26 x CoinMiner)
ssdeep 6144:oN8VCAa1uMtjpIeBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBF:P8/Ztjp
Threatray 46 similar samples on MalwareBazaar
TLSH 0FB63C69807B24F5C6B0107CF78C7B7EEAFD45F4AEB4015B688C97C1A4289D454ECAA3
Reporter seifreed
Tags:CoinMiner

Intelligence

File Origin
# of uploads :
1
# of downloads :
283
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
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
Creating a file in the Windows subdirectories
Sending a custom TCP request
Creating a file in the %temp% directory
Running batch commands
Creating a process with a hidden window
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/532193
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: 315202 Sample: AC1EXbN0nE Startdate: 12/11/2020 Architecture: WINDOWS Score: 100 59 microsoft-com.mail.protection.outlook.com 2->59 61 chekfast.zennolab.com 2->61 63 5 other IPs or domains 2->63 81 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->81 83 Malicious sample detected (through community Yara rule) 2->83 85 Antivirus detection for dropped file 2->85 87 12 other signatures 2->87 11 AC1EXbN0nE.exe 2 2->11         started        14 wfvponwm.exe 2->14         started        17 svchost.exe 9 1 2->17         started        20 6 other processes 2->20 signatures3 process4 dnsIp5 53 C:\Users\user\AppData\Local\...\wfvponwm.exe, PE32 11->53 dropped 22 cmd.exe 2 11->22         started        24 netsh.exe 3 11->24         started        26 cmd.exe 1 11->26         started        28 3 other processes 11->28 97 Writes to foreign memory regions 14->97 99 Allocates memory in foreign processes 14->99 101 Injects a PE file into a foreign processes 14->101 57 127.0.0.1 unknown unknown 17->57 file6 signatures7 process8 process9 30 conhost.exe 22->30         started        32 conhost.exe 24->32         started        34 conhost.exe 26->34         started        36 conhost.exe 28->36         started        38 conhost.exe 28->38         started        40 conhost.exe 28->40         started        process10 42 svchost.exe 3 1 30->42         started        dnsIp11 65 67.195.204.79, 25, 49740 YAHOO-3US United States 42->65 67 185.253.217.20, 421, 49717 PINDC-ASRU Ukraine 42->67 69 22 other IPs or domains 42->69 55 C:\Windows\SysWOW64\...\systemprofile:.repos, data 42->55 dropped 89 System process connects to network (likely due to code injection or exploit) 42->89 91 Creates files in alternative data streams (ADS) 42->91 93 Contains functionality to identify kernel process list (PsInitialSystemProcess) 42->93 95 3 other signatures 42->95 47 svchost.exe 1 42->47         started        file12 signatures13 process14 dnsIp15 71 ip02.gntl.co.uk 83.151.238.34, 40005, 49726 CERBERUSNETWORKS-ASGB United Kingdom 47->71 73 msr.pool.gntl.co.uk 47->73 75 pool.gntl.co.uk 47->75 77 System process connects to network (likely due to code injection or exploit) 47->77 51 conhost.exe 47->51         started        signatures16 79 Detected Stratum mining protocol 71->79 process17
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/bac50bcd3650dd1fe39d3bb59c4501e14c3f95a52ed163d3fc2270a71946d309/
Threat name:
Win32.Backdoor.Tofsee
Create hunting rule
Status:
Malicious
First seen:
2020-11-11 11:37:59 UTC
AV detection:
27 of 29 (93.10%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=xlcqxtjwkdor7y45ho2zyrib4fgd7fnff3iwhu74ejykogkg2meq._file
Verdict:
malicious
Similar samples:
1871587dfeba4fe175b8b51e8f9fc27c1df99fef0a16f09da1594542ee8ee1cb
CoinMiner
250e0338d50cf0cc388cdf0732d6a58576995ac5d74bebd9d45632450413c9a0
CoinMiner
575a4ea0536e74d52c4dbd55a5f55563cf04e9f553d9a433caf0dc651800d022
CoinMiner
8d64110a77ed9fe2d9454816668d95ed000442a34bb558ca0447ebd8c08b30ba
CoinMiner
90ab735f3e99db675bbc2913b1f34ef7bd72636222ae8b2a2b5e4de01c2e2dea
CoinMiner
af21217ee5523873bc4ee3b262ce06a371a1095abfea9729e3413cf9da1a0cab
CoinMiner
b63c10b77dd1bc652096d6ddb4616ff5269ce895bba9c71668839fad954dde6d
CoinMiner
bb56a44a1aecdb49ea4655e4fb4f5d62b6f44938457b704b6154256a3d387b1b
CoinMiner
ca1a4c8a164422ed34687440e215828aac50681c7f9da29ff95d42a28b6af762
CoinMiner
d75741013d7ee0596d2fc4d94087a29fe6b8da3700318f011fb6b7e1615eef21
CoinMiner
+ 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-rhv9mpnjra/
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
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:
bac50bcd3650dd1fe39d3bb59c4501e14c3f95a52ed163d3fc2270a71946d309
MD5 hash:
4b9e84f291c8f5dd74af3a45577b4099
SHA1 hash:
b94f29ba31f1df91cf7f89269e5c8fab71727186
Detections:
win_tofsee_w0
Create hunting rule
Link:
https://www.unpac.me/results/c0c6393a-e85d-4ef8-a269-40b1b1c2fd8e/
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
Other

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