MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8c505862e16dd60fe08e63fd75b3460f21201f77c19d0c4793a68a7b35f5f2e5. 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: 12


Intelligence 12 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 8c505862e16dd60fe08e63fd75b3460f21201f77c19d0c4793a68a7b35f5f2e5
SHA3-384 hash: b32f6c79be7a7383dc18723bffbc903b947af82eac7f589fa340b46eb8e3a55943304ab10cd8d53d64f12b73cfe4bbc7
SHA1 hash: 5d561f69158620be0f283e919814a55c495163a5
MD5 hash: f6ee0e7fbe7677dd9f3b053e206fbd4c
humanhash: princess-magazine-low-beer
File name:oewhwalb.exe
Download: download sample
Signature Tofsee
Create hunting rule
File size:10'558'464 bytes
First seen:2022-01-23 17:19:24 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 1232dc64de388ade9f0aa65d0636807d (4 x RedLineStealer, 2 x GrandaMisha, 1 x OnlyLogger)
ssdeep 49152:qVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVH:
Threatray 200 similar samples on MalwareBazaar
TLSH T17DB69DF0A693A6B6D46527B0492B8FE51DACFF44DC47535730B82B4BBA677001C8226F
File icon (PE):PE icon
dhash icon f8fc94b4b4d4d9c1 (1 x Tofsee)
Reporter iam_py_test
Tags:exe Tofsee


Avatar
iam_py_test
Found on a infected system

Intelligence

File Origin
# of uploads :
1
# of downloads :
703
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Tofsee
Create hunting rule
Link:
https://www.capesandbox.com/analysis/221726/
Detection(s):
Win.Malware.Mikey-9917879-0
Create hunting rule

Win.Packed.Lockbit-9919158-0
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
Creating a service
Creating a file
Launching the process to change the firewall settings
Creating a process from a recently created file
Launching a service
Launching the default Windows debugger (dwwin.exe)
DNS request
Moving a file to the Windows subdirectory
Searching for synchronization primitives
Forced system process termination
Sending a custom TCP request
Creating a file in the Windows subdirectories
Possible injection to a system process
Enabling autorun for a service
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
greyware mikey
Link:
https://www.filescan.io/uploads/61ed8e48d32385db6322f041/reports/5cef7068-93af-4f78-b7de-c253f202bfbd/overview
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/072baa43-a38e-4677-aeb3-83e0436176c5
Result
Threat name:
Tofsee
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/925871
Signature
Allocates memory in foreign processes
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
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
Modifies the windows firewall
Sigma detected: Copying Sensitive Files with Credential Data
Sigma detected: Suspect Svchost Activity
Sigma detected: Suspicious Svchost Process
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: 558349 Sample: oewhwalb.exe Startdate: 23/01/2022 Architecture: WINDOWS Score: 100 47 microsoft-com.mail.protection.outlook.com 2->47 53 Found malware configuration 2->53 55 Antivirus detection for URL or domain 2->55 57 Yara detected Tofsee 2->57 59 7 other signatures 2->59 8 kffyjtld.exe 2->8         started        11 oewhwalb.exe 2 2->11         started        14 svchost.exe 1 2->14         started        16 3 other processes 2->16 signatures3 process4 file5 65 Detected unpacking (changes PE section rights) 8->65 67 Detected unpacking (overwrites its own PE header) 8->67 69 Writes to foreign memory regions 8->69 77 2 other signatures 8->77 18 svchost.exe 1 8->18         started        45 C:\Users\user\AppData\Local\...\kffyjtld.exe, PE32 11->45 dropped 71 Found API chain indicative of debugger detection 11->71 73 Uses netsh to modify the Windows network and firewall settings 11->73 75 Modifies the windows firewall 11->75 22 cmd.exe 1 11->22         started        25 netsh.exe 3 11->25         started        27 cmd.exe 2 11->27         started        29 3 other processes 11->29 signatures6 process7 dnsIp8 49 patmushta.info 213.226.112.8, 443, 49777, 49782 RETN-ASEU Russian Federation 18->49 51 microsoft-com.mail.protection.outlook.com 104.47.54.36, 25, 49776 MICROSOFT-CORP-MSN-AS-BLOCKUS United States 18->51 61 System process connects to network (likely due to code injection or exploit) 18->61 63 Deletes itself after installation 18->63 43 C:\Windows\SysWOW64\...\kffyjtld.exe (copy), PE32 22->43 dropped 31 conhost.exe 22->31         started        33 conhost.exe 25->33         started        35 conhost.exe 27->35         started        37 conhost.exe 29->37         started        39 conhost.exe 29->39         started        41 conhost.exe 29->41         started        file9 signatures10 process11
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/8c505862e16dd60fe08e63fd75b3460f21201f77c19d0c4793a68a7b35f5f2e5/
Threat name:
Win32.Ransomware.StopCrypt
Create hunting rule
Status:
Malicious
First seen:
2022-01-23 17:20:21 UTC
File Type:
PE (Exe)
Extracted files:
29
AV detection:
26 of 28 (92.86%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=rrifqyxbnxla7yeomp6xlm2gb4qsah3xygoqyr4tu2fhwnpv6lsq._file
Verdict:
malicious
Similar samples:
0467d83ba3b0d1f7c09d3fa662383e261ea44ea866cdfa0c686eba4cc5a822f2
Tofsee
0b46fd5f7c63d1e22e944ae3797994f06ccd6033d1eaa2dc6e82cc1d55ae9ad6
Tofsee
1ae374502df9e63ab3d4b3bc2611b0758f97285c3eb49d58713fd654ed9ab756
Tofsee
45fced29713e8dc96972faeab4f21ec670543c252ed824b358294e9b8270e496
Tofsee
4fb79897fd57ac7d1724c92ef26e493e15d974f83c2c7f6e72af4f6e8084ff20
Tofsee
5b6e9f80c787e237f396735f48b3a2ccaeabe6e5c596693a34e7cb7a7bb4d123
Tofsee
ee87fd0a4b66479135cb2342baaa9fbf54e7dfa4ea65a13a35661a8a2f144663
Tofsee
eeafd9d6aa2607575e05d0753c2ecc37710a9164fc5af4c9afa28c2d546e470b
Tofsee
f57855bf23ce70fccbad6dec4c7d9e97710f222f98dfa0141762d66e56b6192d
Tofsee
+ 190 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/220123-vwfpeagbgj/
Behaviour
Modifies data under HKEY_USERS
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Launches sc.exe
Drops file in System32 directory
Suspicious use of SetThreadContext
Legitimate hosting services abused for malware hosting/C2
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:
patmushta.info
ovicrush.cn
Unpacked files
SH256 hash:
2a0136875f26961b7dd057eb51511da1af53257d2faaa0e04b6ee80e5dfa0901
MD5 hash:
fcb400ce56c2e2d8d5ed66aedfa07028
SHA1 hash:
350a4e2b3dafba173af0b04980df31be9d3193a4
Detections:
win_tofsee_w0
Create hunting rule
Link:
https://www.unpac.me/results/d3a3878c-5b1a-43db-9815-e52b657438f9/
Parent samples :
7872562982688229ba9bcf6b09cd7282229da0b0690aec62c163e43fcb305631
3710148e7676d904f8b7626c4275ef85777ec3ec99d354246c8d3c5663c6961a
4fb79897fd57ac7d1724c92ef26e493e15d974f83c2c7f6e72af4f6e8084ff20
8c505862e16dd60fe08e63fd75b3460f21201f77c19d0c4793a68a7b35f5f2e5
5d79e81b0646780b04099e4fe9b4805a97d2ae818443d644a87905dc40cd9e68
aee866c403304b93df8b255fb452ec1a25b9115bc8357489e42a2498b065d6e7
SH256 hash:
8c505862e16dd60fe08e63fd75b3460f21201f77c19d0c4793a68a7b35f5f2e5
MD5 hash:
f6ee0e7fbe7677dd9f3b053e206fbd4c
SHA1 hash:
5d561f69158620be0f283e919814a55c495163a5
Link:
https://www.unpac.me/results/d3a3878c-5b1a-43db-9815-e52b657438f9/
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/8c505862e16dd60fe08e63fd75b3460f21201f77c19d0c4793a68a7b35f5f2e5

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.

Cape
Cape
https://www.capesandbox.com/analysis/221726/

Comments