MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a2cbb1cf3dc6fbbefec090e40d8ee0eae32d7ebc552b69623aa87dae22527791. 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: 16


Intelligence 16 IOCs YARA 16 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a2cbb1cf3dc6fbbefec090e40d8ee0eae32d7ebc552b69623aa87dae22527791
SHA3-384 hash: 097d060152d456b78faceb88078125eafa882b1a72c275ea90133890a88182b39f348c5bbdf0439e3e40185d590ae3c2
SHA1 hash: 691a283d26b0d9ac16294360c20120d363cf4445
MD5 hash: 3791849ba6e7479300eaa58f7c600971
humanhash: oven-seventeen-lima-sweet
File name:file
Download: download sample
Signature Tofsee
Create hunting rule
File size:192'512 bytes
First seen:2023-03-14 18:29:17 UTC
Last seen:2023-03-14 20:29:06 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 11d51d37617e55d90ea2ab5d83a2aa08 (4 x Smoke Loader, 3 x LaplasClipper, 2 x RedLineStealer)
ssdeep 3072:hU3EE00g/0hhsqx0JomJjri7oHhBLUm81i:mEFr0hOCTmJjr/Hv
Threatray 20 similar samples on MalwareBazaar
TLSH T17B145C1392A07F51E5214B728E2FC6F9360DF951DE18FF7A2218AA1F05B03A1E672753
TrID 47.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
15.9% (.EXE) Win64 Executable (generic) (10523/12/4)
9.9% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
7.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
6.8% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon 916a6e6a6a6a6a60 (15 x RedLineStealer, 14 x Smoke Loader, 5 x RecordBreaker)
Reporter andretavare5
Tags:exe Tofsee


Avatar
andretavare5
Sample downloaded from http://176.113.115.239:8080/4.php

Intelligence

File Origin
# of uploads :
2
# of downloads :
218
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
tofsee
Create hunting rule
ID:
1
File name:
file
Verdict:
Malicious activity
Analysis date:
2023-03-14 18:33:07 UTC
Tags:
tofsee trojan miner
Link:
https://app.any.run/tasks/77f3efff-34cd-496d-8f1a-f2b341de0aeb

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Tofsee
Create hunting rule
Link:
https://www.capesandbox.com/analysis/374340/
Detection(s):
SecuriteInfo.com.Win32.RansomX-gen.14045.10029.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a file in the %temp% directory
Сreating synchronization primitives
Running batch commands
Creating a process with a hidden window
Launching a process
Moving a file to the Windows subdirectory
Creating a service
Launching the process to change the firewall settings
Launching a service
Launching the default Windows debugger (dwwin.exe)
Creating a process from a recently created file
Searching for synchronization primitives
Forced system process termination
DNS request
Sending a custom TCP request
Creating a file in the Windows subdirectories
Possible injection to a system process
Enabling autorun for a service
Unauthorized injection to a system process
Adding exclusions to Windows Defender
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
greyware lockbit packed tofsee
Link:
https://www.filescan.io/uploads/6410bd2c06c49bd8b6b5c2e2/reports/ed1c403c-6e9d-43d1-9f37-f0fd78f9ca3e/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/a2cbb1cf3dc6fbbefec090e40d8ee0eae32d7ebc552b69623aa87dae22527791
Result
Verdict:
UNKNOWN
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/caa3a3c5-24b9-45c8-ae52-f8e86e6a9d8e
Result
Threat name:
Tofsee
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1193587
Signature
Allocates memory in foreign processes
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
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
Snort IDS alert for network traffic
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: 826487 Sample: file.exe Startdate: 14/03/2023 Architecture: WINDOWS Score: 100 51 microsoft-com.mail.protection.outlook.com 2->51 57 Snort IDS alert for network traffic 2->57 59 Malicious sample detected (through community Yara rule) 2->59 61 Multi AV Scanner detection for submitted file 2->61 63 5 other signatures 2->63 8 tgbgzjhl.exe 2->8         started        11 file.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\...\tgbgzjhl.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 nidavellir.top 176.124.192.220, 443, 49686, 49687 GULFSTREAMUA Russian Federation 18->53 55 microsoft-com.mail.protection.outlook.com 40.93.207.5, 25, 49685 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\...\tgbgzjhl.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/a2cbb1cf3dc6fbbefec090e40d8ee0eae32d7ebc552b69623aa87dae22527791/
Threat name:
Win32.Trojan.Privateloader
Create hunting rule
Status:
Malicious
First seen:
2023-03-14 18:18:11 UTC
File Type:
PE (Exe)
Extracted files:
38
AV detection:
20 of 24 (83.33%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=ulf3dtz5y35357wasdsa3dxa5lrs27v4kuvwsyr2vb624isso6iq._file
Verdict:
malicious
Similar samples:
3abf5e573cbcc7b375436931ff07be0d9d13085cf6a14f9cde285a83e7ff528e
Tofsee
4fb79897fd57ac7d1724c92ef26e493e15d974f83c2c7f6e72af4f6e8084ff20
Tofsee
5b6e9f80c787e237f396735f48b3a2ccaeabe6e5c596693a34e7cb7a7bb4d123
Tofsee
7872562982688229ba9bcf6b09cd7282229da0b0690aec62c163e43fcb305631
Tofsee
8c505862e16dd60fe08e63fd75b3460f21201f77c19d0c4793a68a7b35f5f2e5
Tofsee
eeafd9d6aa2607575e05d0753c2ecc37710a9164fc5af4c9afa28c2d546e470b
Tofsee
f57855bf23ce70fccbad6dec4c7d9e97710f222f98dfa0141762d66e56b6192d
Tofsee
+ 10 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/230314-w5ghqsba5w/
Behaviour
Modifies data under HKEY_USERS
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
Launches sc.exe
Drops file in System32 directory
Suspicious use of SetThreadContext
Checks computer location settings
Deletes itself
Executes dropped EXE
Creates new service(s)
Modifies Windows Firewall
Sets service image path in registry
XMRig Miner payload
Tofsee
Windows security bypass
xmrig
Malware Config
C2 Extraction:
nidavellir.top
jotunheim.name
Unpacked files
SH256 hash:
bfb026214b0a65f3363a1b88e1d5025b03dc8c0f5c11286b36ff724e38919a43
MD5 hash:
48504b19943816579be4a8784aac08d1
SHA1 hash:
56bd46c9efb18f8b4748dee08d85251e647a2a16
Detections:
Tofsee
Create hunting rule
win_tofsee_w0
Create hunting rule
Link:
https://www.unpac.me/results/f06f52b1-22b4-48f8-bc11-f53a8e7d1a6f/
Parent samples :
cad1a1f826af74ab5fe83fe89ae39874b8443b7a85f6eaa6afe3d8c8cde80428
4f8f35335dce9870e601b44c6d38a83cd2feaa081d7ae1b16c91258674e02630
1f6a2ebd5e58a939503b1b51a6e22090e80bc39099f715852cb3719b32e4a7d1
adfb07f6f0a466bfa3ec21c93e946566fd52885319c318e7327cb10b20ba7cbb
2279dc10a3db2ec68f0040c03f81998168d0cd770340b0d49b5bfed5a92e634a
2ee64e188677e6544342a29562d04bcab608c528f91df42e09a6fb5c8a63b8ce
a2cbb1cf3dc6fbbefec090e40d8ee0eae32d7ebc552b69623aa87dae22527791
SH256 hash:
a2cbb1cf3dc6fbbefec090e40d8ee0eae32d7ebc552b69623aa87dae22527791
MD5 hash:
3791849ba6e7479300eaa58f7c600971
SHA1 hash:
691a283d26b0d9ac16294360c20120d363cf4445
Link:
https://www.unpac.me/results/f06f52b1-22b4-48f8-bc11-f53a8e7d1a6f/
Malware family:
XMRig
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/a2cbb1cf3dc6/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/a2cbb1cf3dc6fbbefec090e40d8ee0eae32d7ebc552b69623aa87dae22527791

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:cobalt_strike_tmp01925d3f
Create hunting rule
Author:The DFIR Report
Description:files - file ~tmp01925d3f.exe
Reference:https://thedfirreport.com
Rule name:CoinMiner_Strings
Create hunting rule
Author:Florian Roth (Nextron Systems)
Description:Detects mining pool protocol string in Executable
Reference:https://minergate.com/faq/what-pool-address
Rule name:Detect_Tofsee
Create hunting rule
Author:@malgamy12
Description:Detect_Tofsee
Rule name:MacOS_Cryptominer_Generic_333129b7
Create hunting rule
Author:Elastic Security
Rule name:MALWARE_Win_Tofsee
Create hunting rule
Author:ditekSHen
Description:Detects Tofsee
Rule name:MAL_XMR_Miner_May19_1
Create hunting rule
Author:Florian Roth (Nextron Systems)
Description:Detects Monero Crypto Coin Miner
Reference:https://www.guardicore.com/2019/05/nansh0u-campaign-hackers-arsenal-grows-stronger/
Rule name:MAL_XMR_Miner_May19_1_RID2E1B
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:Trellix ATR team
Description:Monero mining software
Rule name:PUA_Crypto_Mining_CommandLine_Indicators_Oct21
Create hunting rule
Author:Florian Roth (Nextron Systems)
Description:Detects command line parameters often used by crypto mining software
Reference:https://www.poolwatch.io/coin/monero
Rule name:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns
Rule name:tofsee_yhub
Create hunting rule
Author:Billy Austin
Description:Detects Tofsee botnet, also known as Gheg
Rule name:Windows_Trojan_Tofsee_26124fe4
Create hunting rule
Author:Elastic Security
Rule name:win_tofsee_w0
Create hunting rule
Author:akrasuski1
Rule name:XMRIG_Monero_Miner
Create hunting rule
Author:Florian Roth (Nextron Systems)
Description:Detects Monero mining software
Reference:https://github.com/xmrig/xmrig/releases
Rule name:XMRIG_Monero_Miner_RID2DC1
Create hunting rule
Author:Florian Roth
Description:Detects Monero mining software
Reference:https://github.com/xmrig/xmrig/releases
Rule name:yara_template
Create hunting rule

File information

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

  
Dropped by
PrivateLoader
  
Delivery method
Distributed via drive-by
Cape
Cape
https://www.capesandbox.com/analysis/374340/
  
URLhaus
https://urlhaus.abuse.ch/url/2513471/

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