MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 de2146a97f1318d0957c808c23fa813c64955ced2187cdd2cef9d4971f5fc3a5. 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: 15


Intelligence 15 IOCs YARA 9 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: de2146a97f1318d0957c808c23fa813c64955ced2187cdd2cef9d4971f5fc3a5
SHA3-384 hash: fdf7c362bd6898c26b709a7d5cb3f4a90bbeb1a944469c6d3daa8a791fac5e1645800dc02be777931ef041e62ee28a7d
SHA1 hash: da070a55592640ca42b9e4f38a3f7c3eee2522c1
MD5 hash: 9d1fe9a2662b8197482fd35c451577ac
humanhash: purple-maine-wolfram-gee
File name:9d1fe9a2662b8197482fd35c451577ac.exe
Download: download sample
Signature Tofsee
Create hunting rule
File size:316'928 bytes
First seen:2022-06-08 09:17:16 UTC
Last seen:2022-06-08 10:03:48 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 3bfd7473e430500ed1d2bf7635bb6b63 (2 x Nymaim, 2 x Smoke Loader, 1 x GCleaner)
ssdeep 6144:kzY+0IhBysCn+ztMw/Mo4qXDBOa8TdUBcgedJi7Pn:kzYQByF+pMw/Mo4qXDBO1wcg6i
TLSH T153648D10BB90C435F5B352F889BA93BCB92E7EA15B2454CF52D566EE4634AD0EC31307
TrID 48.8% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
16.4% (.EXE) Win64 Executable (generic) (10523/12/4)
10.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
7.8% (.EXE) Win16 NE executable (generic) (5038/12/1)
7.0% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon 25ac1370399b9b91 (36 x Amadey, 28 x Smoke Loader, 17 x RedLineStealer)
Reporter abuse_ch
Tags:exe Tofsee

Intelligence

File Origin
# of uploads :
2
# of downloads :
456
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
tofsee
Create hunting rule
ID:
1
File name:
9d1fe9a2662b8197482fd35c451577ac.exe
Verdict:
Malicious activity
Analysis date:
2022-06-08 09:22:44 UTC
Tags:
tofsee miner trojan
Link:
https://app.any.run/tasks/0039d006-0d99-455d-a797-516ab5cc3369

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/277715/
Detection(s):
SecuriteInfo.com.Trojan.DownLoader44.63189.22589.504.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
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
Creating a process from a recently created file
Launching the default Windows debugger (dwwin.exe)
Searching for synchronization primitives
Forced system process termination
DNS request
Sending a custom TCP request
Creating a file in the Windows subdirectories
Connecting to a cryptocurrency mining pool
Sending an HTTP GET request
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 packed tofsee
Link:
https://www.filescan.io/uploads/62a0699e8e867832d9e66730/reports/87f13562-5f1e-49d1-839c-dcd8a6149e1e/overview
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.
Malware family:
Tofsee
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/b89f2d9b-963e-46ee-94cd-7d4cd7651be9
Result
Threat name:
Tofsee
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1008884
Signature
Allocates memory in foreign processes
Antivirus detection for URL or domain
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 domain / URL
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: 641381 Sample: vVtnVr9jVW.exe Startdate: 08/06/2022 Architecture: WINDOWS Score: 100 56 microsoft-com.mail.protection.outlook.com 2->56 62 Snort IDS alert for network traffic 2->62 64 Multi AV Scanner detection for domain / URL 2->64 66 Malicious sample detected (through community Yara rule) 2->66 68 7 other signatures 2->68 8 rlkjatgl.exe 2->8         started        11 vVtnVr9jVW.exe 2 2->11         started        14 svchost.exe 2->14         started        16 10 other processes 2->16 signatures3 process4 dnsIp5 74 Detected unpacking (changes PE section rights) 8->74 76 Detected unpacking (overwrites its own PE header) 8->76 78 Writes to foreign memory regions 8->78 86 2 other signatures 8->86 19 svchost.exe 1 8->19         started        50 C:\Users\user\AppData\Local\...\rlkjatgl.exe, PE32 11->50 dropped 80 Uses netsh to modify the Windows network and firewall settings 11->80 82 Modifies the windows firewall 11->82 23 cmd.exe 1 11->23         started        26 netsh.exe 3 11->26         started        28 cmd.exe 2 11->28         started        32 3 other processes 11->32 84 Changes security center settings (notifications, updates, antivirus, firewall) 14->84 30 MpCmdRun.exe 1 14->30         started        52 127.0.0.1 unknown unknown 16->52 54 192.168.2.1 unknown unknown 16->54 file6 signatures7 process8 dnsIp9 58 svartalfheim.top 185.178.45.27, 443, 49744, 49767 TIMEWEB-ASRU Russian Federation 19->58 60 microsoft-com.mail.protection.outlook.com 104.47.54.36, 25, 49743 MICROSOFT-CORP-MSN-AS-BLOCKUS United States 19->60 70 System process connects to network (likely due to code injection or exploit) 19->70 72 Deletes itself after installation 19->72 48 C:\Windows\SysWOW64\...\rlkjatgl.exe (copy), PE32 23->48 dropped 34 conhost.exe 23->34         started        36 conhost.exe 26->36         started        38 conhost.exe 28->38         started        40 conhost.exe 30->40         started        42 conhost.exe 32->42         started        44 conhost.exe 32->44         started        46 conhost.exe 32->46         started        file10 signatures11 process12
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/de2146a97f1318d0957c808c23fa813c64955ced2187cdd2cef9d4971f5fc3a5/
Threat name:
Win32.Ransomware.StopCrypt
Create hunting rule
Status:
Malicious
First seen:
2022-06-05 08:59:33 UTC
File Type:
PE (Exe)
Extracted files:
11
AV detection:
19 of 26 (73.08%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=3yqunkl7cmmnbfl4qcgch6ubhrsjkxhnegd43uwo7hkjoh27yosq._file
Verdict:
malicious
Result
Malware family:
xmrig
Create hunting rule
Score:
  10/10
Tags:
family:tofsee family:xmrig evasion miner persistence trojan
Link:
https://tria.ge/reports/220608-k9lgpseghl/
Behaviour
Modifies data under HKEY_USERS
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Program crash
Enumerates physical storage devices
Launches sc.exe
Drops file in System32 directory
Suspicious use of SetThreadContext
Checks computer location settings
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
xmrig
Malware Config
C2 Extraction:
svartalfheim.top
jotunheim.name
Unpacked files
SH256 hash:
ff61a7b3b030bf91ea6652ac3cd02c0322d99dea711605f5640082f94c654122
MD5 hash:
3c0d9ffa5274d05850052f66406b0a87
SHA1 hash:
31ba7414058e80d226bf8be95206bd2183c86c1b
Detections:
win_tofsee_w0
Create hunting rule
Link:
https://www.unpac.me/results/ee99b8a2-d899-445f-af0c-98366767589b/
Parent samples :
1cfe393c560cf7e17905bb2573ece065ffd587ffe3ec5efbbb43b326a39e3d51
1d8b78fcbb6f3e68c24f759b86c7cea38f5b5642a9d2c556cc9c35a7ee24b8d4
27a1d52df4f2a964e70b9c36b5e08a18589463a44a828ab88cf67c44ba8ec82e
de2146a97f1318d0957c808c23fa813c64955ced2187cdd2cef9d4971f5fc3a5
ddaada491b8cf4d1187cb01078c5f3fd167e76c324d3e0db83753a6922e739f4
328d8190e76d7a071ac0b7566ad94537037cb90a70171a9ffcef63a26ba82558
e9c02698fef6793fda4947b08333052bf142e43377ae6b0b74acd1ab15a59af3
bfb8326e9ff8342de2f793e97ef3c5a0be6a7cce114ef63c1ad22263a39238df
2719f13649acbb37dd24e9332fed0063187f22b19db768baa88b76444d704360
b35f4af1c1d3a56b88741a1730c356a5602882505fcfe0bc089ad6e46cb0af36
609e9035531cd4b9f21061825dd72555b0e059c38268796ac83f1dfe0449f1e0
eb6bda9737c6ace5c9f38b44dba312f18fe0bf044b4848817c17b4e1a74d90b9
6f5f412f4100c88ca174a6c35bb1c0e91b366782ac87ecd4751d95329941e818
0ef96177554f1cd2eea823b6dc0c3dc54aec830827a2e82f59aed9fe7b896ba5
dcd865d70e4178d9172719bb91500ded3a47f5fccb56bd839a93f72b8c27a565
SH256 hash:
de2146a97f1318d0957c808c23fa813c64955ced2187cdd2cef9d4971f5fc3a5
MD5 hash:
9d1fe9a2662b8197482fd35c451577ac
SHA1 hash:
da070a55592640ca42b9e4f38a3f7c3eee2522c1
Link:
https://www.unpac.me/results/ee99b8a2-d899-445f-af0c-98366767589b/
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/de2146a97f1318d0957c808c23fa813c64955ced2187cdd2cef9d4971f5fc3a5

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:CoinMiner_Strings
Create hunting rule
Author:Florian Roth
Description:Detects mining pool protocol string in Executable
Reference:https://minergate.com/faq/what-pool-address
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
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
Description:Detects command line parameters often used by crypto mining software
Reference:https://www.poolwatch.io/coin/monero
Rule name:win_tofsee_w0
Create hunting rule
Author:akrasuski1
Rule name:XMRIG_Monero_Miner
Create hunting rule
Author:Florian Roth
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

File information

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

Web download

Tofsee

Executable exe de2146a97f1318d0957c808c23fa813c64955ced2187cdd2cef9d4971f5fc3a5

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/2217238/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/277715/

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