MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4cc8f23e22db5a8201474e9d46e986ad4772b8ea91c9e281242f2cb5f10dae0b. 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 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4cc8f23e22db5a8201474e9d46e986ad4772b8ea91c9e281242f2cb5f10dae0b
SHA3-384 hash: f8eda194d581cfb9018c5f9f2a0ef2f06fe57386ab869e9b12fc26b8de22ea2e89d74007453dad69daa48586f79171ed
SHA1 hash: e7b586da0c886b917c15dd21d30f7dc3dc4af539
MD5 hash: ab34ce653200d046e01f59b564017a29
humanhash: jersey-bakerloo-helium-snake
File name:ab34ce653200d046e01f59b564017a29.exe
Download: download sample
Signature Tofsee
Create hunting rule
File size:270'848 bytes
First seen:2022-05-08 16:36:24 UTC
Last seen:2022-05-08 17:37:33 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 39920d3af3f36626420c1ff585e51162 (1 x Tofsee, 1 x RedLineStealer)
ssdeep 6144:035YstqXwEaxJa6z8IHsN79DTHzr2hchKOmeRo:Ayhg7xJarhNRzrkcPme
Threatray 267 similar samples on MalwareBazaar
TLSH T17F44AE04BB90D035F0B722F4597A87A8B9297EB19B2481CF62D47BEE56346D4EC3071B
TrID 39.4% (.EXE) Win32 EXE PECompact compressed (generic) (41569/9/9)
29.5% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
9.9% (.EXE) Win64 Executable (generic) (10523/12/4)
6.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.7% (.EXE) Win16 NE executable (generic) (5038/12/1)
File icon (PE):PE icon
dhash icon b6dacabecee6bea6 (1 x Tofsee, 1 x Stop, 1 x RedLineStealer)
Reporter abuse_ch
Tags:exe Tofsee

Intelligence

File Origin
# of uploads :
2
# of downloads :
489
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
tofsee
Create hunting rule
ID:
1
File name:
ab34ce653200d046e01f59b564017a29.exe
Verdict:
Malicious activity
Analysis date:
2022-05-08 16:37:43 UTC
Tags:
tofsee trojan miner
Link:
https://app.any.run/tasks/bfa201eb-5867-40f5-aded-8822d05b22fb

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Trojan.Siggen17.49478.14377.16260.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
Creating a file
Launching the process to change the firewall settings
Creating a process from a recently created file
Creating a service
Launching a service
Launching the default Windows debugger (dwwin.exe)
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Enabling autorun for a service
Result
Malware family:
n/a
Score:
  9/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/16721/overview
Behaviour
MalwareBazaar
CPUID_Instruction
MeasuringTime
SystemUptime
EvasionGetTickCount
CheckCmdLine
EvasionQueryPerformanceCounter
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
greyware packed tofsee
Link:
https://www.filescan.io/uploads/6277f18da40dfc4df20f3a0b/reports/91589141-ea46-4729-8790-c8f9a60f4caf/overview
Result
Verdict:
SUSPICIOUS
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/ad5ac81d-aba8-4b98-8e9d-95bb0003fe23
Result
Threat name:
Tofsee
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/989783
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
Found API chain indicative of debugger detection
Found malware configuration
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
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: 622276 Sample: hzIibH8wcV.exe Startdate: 08/05/2022 Architecture: WINDOWS Score: 100 54 microsoft-com.mail.protection.outlook.com 2->54 60 Multi AV Scanner detection for domain / URL 2->60 62 Found malware configuration 2->62 64 Malicious sample detected (through community Yara rule) 2->64 66 6 other signatures 2->66 8 tdxrpqxr.exe 2->8         started        11 hzIibH8wcV.exe 2 2->11         started        14 svchost.exe 2->14         started        16 8 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\...\tdxrpqxr.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 file6 signatures7 process8 dnsIp9 56 niflheimr.cn 193.233.205.135, 443, 49721, 49763 FREE-NET-ASFREEnetEU Russian Federation 19->56 58 microsoft-com.mail.protection.outlook.com 40.93.212.0, 25, 49719, 49786 MICROSOFT-CORP-MSN-AS-BLOCKUS United States 19->58 68 System process connects to network (likely due to code injection or exploit) 19->68 70 Found API chain indicative of debugger detection 19->70 72 Deletes itself after installation 19->72 48 C:\Windows\SysWOW64\...\tdxrpqxr.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/4cc8f23e22db5a8201474e9d46e986ad4772b8ea91c9e281242f2cb5f10dae0b/
Threat name:
Win32.Backdoor.Tofsee
Create hunting rule
Status:
Malicious
First seen:
2022-05-08 16:37:06 UTC
File Type:
PE (Exe)
Extracted files:
20
AV detection:
19 of 26 (73.08%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=jtepeprc3nnieakhj2oun2mgvvdxfohkshe6fajef4wll4invyfq._file
Verdict:
malicious
Similar samples:
0c562a5c681740b9496f31015d6ec74b9daf4ca21ce5dbde6788c866fb0d6aea
Tofsee
38a30aee82cdd8e5338e168d99fdce7b8e032a89da64e48751b2e45f9d50ad13
Tofsee
3db9a9633bb3097ee7f34cd85bbc168ed3a59496c0c407cf1d22087d58fa2763
Tofsee
4cb27107153be0d305e8d3452a8d665fdc2567e1f38f5e042c2b73987fad7106
Tofsee
64021aa29f92ea6648407fa632c9ca6733aa14f154e4ab9fc9e7ecb621fdbb80
Tofsee
6daf2f4b11e77d52247a97aa5a8640a9b7957301a152ad48d493581a0148a752
Tofsee
abffa8a6fc90178764f519e4dc44f45b94c4632a146a517c77037eaa7ac887c0
Tofsee
f7024727c4d979b2b200345c3785945aa7c125670fb7ad570f3cf0b45273d966
Tofsee
ffdda68b95776e1b0c2a936c416a4640ce351e72f015367fc65ae347209ccfdb
Tofsee
+ 257 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/220508-t4shhacde5/
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
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:
niflheimr.cn
jotunheim.name
Unpacked files
SH256 hash:
8a45b9fe9a64bef219d7bada4de2e61bd6daa96d913b1d0be5cb4faa83d4b70b
MD5 hash:
69126d6d1a71a666204535aa01e990f4
SHA1 hash:
970ead4d879aace069bf19c80928031df9af0dd1
Detections:
win_tofsee_w0
Create hunting rule
Link:
https://www.unpac.me/results/95faf59c-8749-4c74-9b63-8f1077b9a793/
Parent samples :
8fd888d45037a4390dfa1675314acfd3184aed3386d34d2e3aec78aeb1b12cca
140a1853c2a319ccd4f2fd07cf1712a15adab77c81c66d01f876ef17806889c1
8fc3150c1a665a902a55f53053966ee6782420059be6d0151efaf7eebaf48e73
4cc8f23e22db5a8201474e9d46e986ad4772b8ea91c9e281242f2cb5f10dae0b
3ce8363d05d1015ebd88250aad7c26b2ec0383b3e8a1634aec0cd86900f29324
SH256 hash:
4cc8f23e22db5a8201474e9d46e986ad4772b8ea91c9e281242f2cb5f10dae0b
MD5 hash:
ab34ce653200d046e01f59b564017a29
SHA1 hash:
e7b586da0c886b917c15dd21d30f7dc3dc4af539
Link:
https://www.unpac.me/results/95faf59c-8749-4c74-9b63-8f1077b9a793/
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/4cc8f23e22db5a8201474e9d46e986ad4772b8ea91c9e281242f2cb5f10dae0b

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:MALWARE_Win_Tofsee
Create hunting rule
Author:ditekSHen
Description:Detects Tofsee
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 4cc8f23e22db5a8201474e9d46e986ad4772b8ea91c9e281242f2cb5f10dae0b

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/2051648/
  
Delivery method
Distributed via web download

Comments