MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 0cb99fe4ca2bab139b1b1bb4bb4a65e443b0faebec843eb730a048578d668794. 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


Stop


Vendor detections: 15


Intelligence 15 IOCs YARA 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 0cb99fe4ca2bab139b1b1bb4bb4a65e443b0faebec843eb730a048578d668794
SHA3-384 hash: 52b75944e2bd7175b06579f3219f31ee638a42258449b993448f3f2c1225689a6668953fb81438c77cfef66cce3f8beb
SHA1 hash: fd0a8878c8a124a765b76453a6479f623c5aeee4
MD5 hash: 18478dfc88a2de69d9a3eacd5ca14e3c
humanhash: nebraska-hotel-alaska-lemon
File name:buildz.exe
Download: download sample
Signature Stop
Create hunting rule
File size:871'936 bytes
First seen:2023-01-09 08:37:23 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 9336bf24fe94c66d29758cd42e96c2db (9 x Smoke Loader, 6 x Tofsee, 3 x RedLineStealer)
ssdeep 24576:6yjQnzFDwEdbXZKf83nhKe/LcMvGH8zs+:6yjQzFLdbXZK03hf//Gc/
Threatray 2'726 similar samples on MalwareBazaar
TLSH T11005013032A1DDA3D6164270CACDABD5E7BDB8305A24555737563F2F0AB23E0C26A376
TrID 60.4% (.EXE) InstallShield setup (43053/19/16)
14.7% (.EXE) Win64 Executable (generic) (10523/12/4)
7.0% (.EXE) Win16 NE executable (generic) (5038/12/1)
6.3% (.EXE) Win32 Executable (generic) (4505/5/1)
2.8% (.ICL) Windows Icons Library (generic) (2059/9)
File icon (PE):PE icon
dhash icon 7c7c949484948cc0 (2 x RedLineStealer, 1 x Tofsee, 1 x Stop)
Reporter Anonymous
Tags:exe Stop

Intelligence

File Origin
# of uploads :
1
# of downloads :
211
Origin country :
DE DE
Vendor Threat Intelligence
Malware family:
stop
Create hunting rule
ID:
1
File name:
buildz.exe
Verdict:
Malicious activity
Analysis date:
2023-01-09 08:39:03 UTC
Tags:
installer trojan ransomware stop loader stealer vidar
Link:
https://app.any.run/tasks/010b6727-1090-42af-ab11-1feda1ad2121

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
STOP
Create hunting rule
Link:
https://www.capesandbox.com/analysis/351028/
Detection(s):
Win.Packer.pkr_ce1a-9980177-0
Create hunting rule

Result
Verdict:
Clean
Maliciousness:
Verdict:
No Threat
Threat level:
  2/10
Confidence:
100%
Tags:
greyware packed
Link:
https://www.filescan.io/uploads/63bbd26d5f356e00329cd097/reports/397f4db5-10be-447b-9a53-87cfe9c38a3a/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:
STOP Ransomware
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/27ff62de-c2a4-4c03-882b-909f543c7898
Result
Threat name:
Djvu
Create hunting rule
Detection:
malicious
Classification:
rans.troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1147837
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to inject code into remote processes
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)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Yara detected Djvu Ransomware
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 780569 Sample: buildz.exe Startdate: 09/01/2023 Architecture: WINDOWS Score: 100 38 api.2ip.ua 2->38 46 Multi AV Scanner detection for domain / URL 2->46 48 Malicious sample detected (through community Yara rule) 2->48 50 Antivirus detection for URL or domain 2->50 52 4 other signatures 2->52 9 buildz.exe 2->9         started        12 buildz.exe 2->12         started        14 buildz.exe 2->14         started        16 buildz.exe 2->16         started        signatures3 process4 signatures5 54 Contains functionality to inject code into remote processes 9->54 56 Injects a PE file into a foreign processes 9->56 18 buildz.exe 1 17 9->18         started        58 Multi AV Scanner detection for dropped file 12->58 60 Machine Learning detection for dropped file 12->60 22 buildz.exe 13 14->22         started        24 buildz.exe 6 16->24         started        process6 dnsIp7 40 api.2ip.ua 162.0.217.254, 443, 49695, 49696 ACPCA Canada 18->40 42 192.168.2.1 unknown unknown 18->42 34 C:\Users\user\AppData\Local\...\buildz.exe, PE32 18->34 dropped 36 C:\Users\user\...\buildz.exe:Zone.Identifier, ASCII 18->36 dropped 26 buildz.exe 18->26         started        29 icacls.exe 18->29         started        file8 process9 signatures10 62 Injects a PE file into a foreign processes 26->62 31 buildz.exe 13 26->31         started        process11 dnsIp12 44 api.2ip.ua 31->44
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/0cb99fe4ca2bab139b1b1bb4bb4a65e443b0faebec843eb730a048578d668794/
Threat name:
Win32.Trojan.SmokeLoader
Create hunting rule
Status:
Malicious
First seen:
2023-01-09 08:38:08 UTC
File Type:
PE (Exe)
Extracted files:
70
AV detection:
24 of 26 (92.31%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=bs4z7zgkfovrhgy3do2lwstf4rb3b6xl5scd5nzqubefpdlgq6ka._file
Verdict:
malicious
Similar samples:
1061b07d564f5b59516d9994855e0d5f02c704a5345e0f892c6f01b257c38caa
Stop
11622e1a045939b729512c66cf36d2d49a6d379185f242f3fb6897aabb3933b8
Stop
2831300675369e6ac5d928446186f83bedc4027fe6db617039e5b224258ed0b6
Stop
5aad6ebccf994b06ae04f81acb19cbf976cea52e91671b5375c9c5d37dbb7098
Stop
6a455892dc6b808ff4f012010f20ad4bbf16b881b9c235d98c85565591289012
Stop
6b2e3ed5c3e90f211fd187a2a010054d4ce49d3d1a3cdc03468d484f8e4adadb
Stop
83c4c80adbeb1d8411e49c1d14a886af6a26c9fb9827d8852d4e45e4a5f09b17
Stop
a5c5875892fcf16b14b95f13bc01d686f6127877cc1562721a8182db00c92912
Stop
b990ed5485491482b2c8ee144a2fa5998aaa8fc5575b0ed740e85c40d750721b
Stop
d46fec4abba46efe6663f19c2d9963a612f4ff25023c0dc6fc5bb559f106859d
Stop
+ 2'716 additional samples on MalwareBazaar
Result
Malware family:
vidar
Create hunting rule
Score:
  10/10
Tags:
family:djvu family:vidar botnet:19 discovery persistence ransomware spyware stealer
Link:
https://tria.ge/reports/230109-kjp27sha9w/
Behaviour
Checks processor information in registry
Creates scheduled task(s)
Delays execution with timeout.exe
Modifies system certificate store
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Accesses 2FA software files, possible credential harvesting
Accesses cryptocurrency files/wallets, possible credential harvesting
Adds Run key to start application
Checks installed software on the system
Looks up external IP address via web service
Checks computer location settings
Loads dropped DLL
Modifies file permissions
Reads user/profile data of web browsers
Downloads MZ/PE file
Executes dropped EXE
Detected Djvu ransomware
Djvu Ransomware
Vidar
Malware Config
C2 Extraction:
http://spaceris.com/test1/get.php
https://t.me/year2023start
https://steamcommunity.com/profiles/76561199467421923
Verdict:
Informative
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/12e90f7a-b6e5-4cec-bed9-8f6dd0abaf15
Unpacked files
SH256 hash:
1efeb8b2dc1c0931c551a4ab5a3581130df7a2e2c910d821366f78df181cf88e
MD5 hash:
3eb6495a9eb40f46c0f1a9421fb49e74
SHA1 hash:
0cfc443a7f5acd0efc3b1144a6a8463064e62aff
Detections:
win_stop_auto
Create hunting rule
Link:
https://www.unpac.me/results/8c0cbed1-407d-44a2-8e99-e15cd8166a7d/
Parent samples :
0cb99fe4ca2bab139b1b1bb4bb4a65e443b0faebec843eb730a048578d668794
cb78ac85b22a9a25aade9e895818d1d0dd8fd0658598279d9834d03b73118048
681925f7ac2ae1b8521c22de42ca8b68a3a3d0de21238332f677c166a1b53c57
11f27cdea354be097022a47c95184f2931231d17198f592ef0239fd5ce81e578
8daea5623ede037a31492fecb9791b3e265d2d8edafa699cfe395510940f6977
SH256 hash:
0cb99fe4ca2bab139b1b1bb4bb4a65e443b0faebec843eb730a048578d668794
MD5 hash:
18478dfc88a2de69d9a3eacd5ca14e3c
SHA1 hash:
fd0a8878c8a124a765b76453a6479f623c5aeee4
Link:
https://www.unpac.me/results/8c0cbed1-407d-44a2-8e99-e15cd8166a7d/
Malware family:
STOP
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/0cb99fe4ca2b/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/0cb99fe4ca2bab139b1b1bb4bb4a65e443b0faebec843eb730a048578d668794

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_STOP
Create hunting rule
Author:ditekSHen
Description:Detects STOP ransomware
Rule name:pdb_YARAify
Create hunting rule
Author:@wowabiy314
Description:PDB
Rule name:SUSP_XORed_URL_in_EXE
Create hunting rule
Author:Florian Roth
Description:Detects an XORed URL in an executable
Reference:https://twitter.com/stvemillertime/status/1237035794973560834
Rule name:SUSP_XORed_URL_in_EXE_RID2E46
Create hunting rule
Author:Florian Roth
Description:Detects an XORed URL in an executable
Reference:https://twitter.com/stvemillertime/status/1237035794973560834
Rule name:Windows_Ransomware_Stop_1e8d48ff
Create hunting rule
Author:Elastic Security
Rule name:win_stop_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.stop.

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/351028/

Comments