MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b302fcb42934760527ba26528d13aaa8e2cc3150b8055485e5c27f24edaf2892. 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


StealthWorker


Vendor detections: 9


Intelligence 9 IOCs 1 YARA File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b302fcb42934760527ba26528d13aaa8e2cc3150b8055485e5c27f24edaf2892
SHA3-384 hash: 8b3846734ac88472e38fd4e8c2edba000f9a1d2ea275ccb727c810214f750b97e5bf8f7286da2707ed456b547f56049e
SHA1 hash: 7fe31637a9f6e2e6e463d2076702a00f92f06d76
MD5 hash: 5e7f9ae99a7e6cc5a2f40a4a159bc3db
humanhash: nebraska-lake-cat-mars
File name:5e7f9ae99a7e6cc5a2f40a4a159bc3db.exe
Download: download sample
Signature StealthWorker
Create hunting rule
File size:153'600 bytes
First seen:2021-08-24 12:55:42 UTC
Last seen:2021-08-24 14:25:44 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 7f519e58768c36b2651aa4c0b9c28c9d (12 x RaccoonStealer, 2 x Smoke Loader, 2 x Stop)
ssdeep 1536:vUFEqUJ0eDYKk9DX0Ps3PS10VcpCMLocPQtGhE5XKcBBlJATEL+hItC3nf:IEYr0PL1rpCM0cIQhE5XJBBlJQKt
Threatray 3'832 similar samples on MalwareBazaar
TLSH T1A6E3BE5079D0C073DC511C3148D6CAA0EE2AF861AE7599473BD816AEEF712F1B62A363
dhash icon 1072c092b0381902 (9 x RedLineStealer, 9 x RaccoonStealer, 4 x CryptBot)
Reporter abuse_ch
Tags:exe StealthWorker


Avatar
abuse_ch
StealthWorker C2:
http://188.119.112.104/

Indicators Of Compromise (IOCs)

Below is a list of indicators of compromise (IOCs) associated with this malware samples.

IOCThreatFox Reference
http://188.119.112.104/ https://threatfox.abuse.ch/ioc/193472/

Intelligence

File Origin
# of uploads :
2
# of downloads :
138
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
5e7f9ae99a7e6cc5a2f40a4a159bc3db.exe
Verdict:
Suspicious activity
Analysis date:
2021-08-24 12:58:05 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/062edbbe-e299-4aec-a1df-aab9abbb0f36

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/181911/
Detection(s):
SecuriteInfo.com.Trojan.Siggen14.63732.13863.29807.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Launching the default Windows debugger (dwwin.exe)
Connection attempt to an infection source
Launching a process
Sending a UDP request
Creating a window
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
DNS request
Connection attempt
Creating a process from a recently created file
Sending an HTTP POST request
Creating a file in the %temp% directory
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Query of malicious DNS domain
Sending a TCP request to an infection source
Deleting of the original file
Enabling autorun by creating a file
Unauthorized injection to a system process
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:
Malicious Packer
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/44ca30c2-07bb-43fb-9f3b-dbcb717b2954
Result
Threat name:
Raccoon RedLine SmokeLoader Tofsee Vidar
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/838253
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code references suspicious native API functions
Antivirus detection for URL or domain
Benign windows process drops PE files
Changes security center settings (notifications, updates, antivirus, firewall)
Checks for kernel code integrity (NtQuerySystemInformation(CodeIntegrityInformation))
Checks if the current machine is a virtual machine (disk enumeration)
Connects to many ports of the same IP (likely port scanning)
Contains functionality to inject code into remote processes
Contains functionality to steal Internet Explorer form passwords
Creates a thread in another existing process (thread injection)
Deletes itself after installation
Detected unpacking (changes PE section rights)
Found many strings related to Crypto-Wallets (likely being stolen)
Hides that the sample has been downloaded from the Internet (zone.identifier)
Hides threads from debuggers
Injects a PE file into a foreign processes
Machine Learning detection for sample
Maps a DLL or memory area into another process
May check the online IP address of the machine
Multi AV Scanner detection for submitted file
PE file contains section with special chars
Performs DNS queries to domains with low reputation
Query firmware table information (likely to detect VMs)
Sigma detected: Copying Sensitive Files with Credential Data
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
System process connects to network (likely due to code injection or exploit)
Tries to detect sandboxes / dynamic malware analysis system (registry check)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect sandboxes and other dynamic analysis tools (window names)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to steal Crypto Currency Wallets
Uses known network protocols on non-standard ports
Yara detected Raccoon Stealer
Yara detected RedLine Stealer
Yara detected SmokeLoader
Yara detected Tofsee
Yara detected Vidar
Yara detected Vidar stealer
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 470681 Sample: 5M43WQARL7.exe Startdate: 24/08/2021 Architecture: WINDOWS Score: 100 64 z-p42-instagram.c10r.facebook.com 2->64 66 yelp-com.map.fastly.net 2->66 68 67 other IPs or domains 2->68 104 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->104 106 Antivirus detection for URL or domain 2->106 108 System process connects to network (likely due to code injection or exploit) 2->108 110 18 other signatures 2->110 9 5M43WQARL7.exe 2->9         started        12 urfawhh 2->12         started        14 svchost.exe 2->14         started        16 12 other processes 2->16 signatures3 process4 dnsIp5 120 Detected unpacking (changes PE section rights) 9->120 122 Contains functionality to inject code into remote processes 9->122 124 Injects a PE file into a foreign processes 9->124 19 5M43WQARL7.exe 9->19         started        22 urfawhh 12->22         started        126 Changes security center settings (notifications, updates, antivirus, firewall) 14->126 60 127.0.0.1 unknown unknown 16->60 62 wcts.com 16->62 128 System process connects to network (likely due to code injection or exploit) 16->128 24 WerFault.exe 16->24         started        signatures6 process7 signatures8 112 Checks for kernel code integrity (NtQuerySystemInformation(CodeIntegrityInformation)) 19->112 114 Maps a DLL or memory area into another process 19->114 116 Checks if the current machine is a virtual machine (disk enumeration) 19->116 26 explorer.exe 18 19->26 injected 118 Creates a thread in another existing process (thread injection) 22->118 process9 dnsIp10 70 185.49.70.90, 2080, 49729 LEASEWEB-DE-FRA-10DE United Kingdom 26->70 72 readinglistforaugust2.xyz 95.213.224.6, 80 SELECTELRU Russian Federation 26->72 74 3 other IPs or domains 26->74 52 C:\Users\user\AppData\Roaming\urfawhh, PE32 26->52 dropped 54 C:\Users\user\AppData\Local\Temp\F032.exe, PE32 26->54 dropped 56 C:\Users\user\AppData\Local\Temp832.exe, PE32 26->56 dropped 58 6 other files (3 malicious) 26->58 dropped 130 System process connects to network (likely due to code injection or exploit) 26->130 132 Benign windows process drops PE files 26->132 134 Performs DNS queries to domains with low reputation 26->134 136 2 other signatures 26->136 31 E832.exe 26->31         started        35 D43C.exe 86 26->35         started        38 CEFB.exe 5 26->38         started        40 CBDD.exe 1 26->40         started        file11 signatures12 process13 dnsIp14 76 135.181.123.52, 12073, 49755 HETZNER-ASDE Germany 31->76 88 Detected unpacking (changes PE section rights) 31->88 90 Query firmware table information (likely to detect VMs) 31->90 92 Tries to detect sandboxes and other dynamic analysis tools (window names) 31->92 102 3 other signatures 31->102 78 188.34.200.103, 49731, 80 HETZNER-ASDE Germany 35->78 80 eduarroma.tumblr.com 74.114.154.18, 443, 49730 AUTOMATTICUS Canada 35->80 42 C:\Users\user\AppData\Local\...\nss3[1].dll, PE32 35->42 dropped 44 C:\Users\user\AppData\...\freebl3[1].dll, PE32 35->44 dropped 46 C:\Users\user\AppData\...\msvcp140[1].dll, PE32 35->46 dropped 50 9 other files (none is malicious) 35->50 dropped 94 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 35->94 96 Tries to harvest and steal browser information (history, passwords, etc) 35->96 98 Tries to steal Crypto Currency Wallets 35->98 82 185.234.247.35, 49738, 80 INTERKONEKT-ASPL Russian Federation 38->82 84 telete.in 195.201.225.248, 443, 49736 HETZNER-ASDE Germany 38->84 86 mail.h-email.net 38->86 48 C:\Users\user\AppData\LocalLow\sqlite3.dll, PE32 38->48 dropped 100 Contains functionality to steal Internet Explorer form passwords 38->100 file15 signatures16
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b302fcb42934760527ba26528d13aaa8e2cc3150b8055485e5c27f24edaf2892/
Threat name:
Win32.Trojan.Phonzy
Create hunting rule
Status:
Malicious
First seen:
2021-08-24 02:20:37 UTC
AV detection:
20 of 28 (71.43%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=wmbpznbjgr3akj52ezji2e5kvdrmymkqxacvjbpfyj7sj3npfcja._file
Verdict:
suspicious
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StealthWorker
+ 3'822 additional samples on MalwareBazaar
Result
Malware family:
vidar
Create hunting rule
Score:
  10/10
Tags:
family:raccoon family:redline family:smokeloader family:tofsee family:vidar botnet:824 botnet:b8ef25fa9e346b7a31e4b6ff160623dd5fed2474 botnet:fe582536ec580228180f270f7cb80a867860e010 backdoor evasion infostealer persistence spyware stealer themida trojan
Link:
https://tria.ge/reports/210824-45p9af9zba/
Behaviour
Checks SCSI registry key(s)
Modifies system certificate store
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
Launches sc.exe
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Checks whether UAC is enabled
Checks BIOS information in registry
Deletes itself
Reads user/profile data of web browsers
Themida packer
Creates new service(s)
Downloads MZ/PE file
Executes dropped EXE
Modifies Windows Firewall
Identifies VirtualBox via ACPI registry values (likely anti-VM)
Vidar Stealer
Raccoon
RedLine
RedLine Payload
SmokeLoader
Tofsee
Vidar
Malware Config
C2 Extraction:
http://readinglistforaugust1.xyz/
http://readinglistforaugust2.xyz/
http://readinglistforaugust3.xyz/
http://readinglistforaugust4.xyz/
http://readinglistforaugust5.xyz/
http://readinglistforaugust6.xyz/
http://readinglistforaugust7.xyz/
http://readinglistforaugust8.xyz/
http://readinglistforaugust9.xyz/
http://readinglistforaugust10.xyz/
http://readinglistforaugust1.site/
http://readinglistforaugust2.site/
http://readinglistforaugust3.site/
http://readinglistforaugust4.site/
http://readinglistforaugust5.site/
http://readinglistforaugust6.site/
http://readinglistforaugust7.site/
http://readinglistforaugust8.site/
http://readinglistforaugust9.site/
http://readinglistforaugust10.site/
http://readinglistforaugust1.club/
http://readinglistforaugust2.club/
http://readinglistforaugust3.club/
http://readinglistforaugust4.club/
http://readinglistforaugust5.club/
http://readinglistforaugust6.club/
http://readinglistforaugust7.club/
http://readinglistforaugust8.club/
http://readinglistforaugust9.club/
http://readinglistforaugust10.club/
https://denerux.top/forum/
https://magilson.top/forum/
http://denerux.top/forum/
http://magilson.top/forum/
https://eduarroma.tumblr.com/
Unpacked files
SH256 hash:
0a9a7acf77fe4f890fe2acf761fa7f369418bb1f733504acd0792f589ccc7b15
MD5 hash:
ad94a86355be2ad9348b88e8972e8320
SHA1 hash:
8c7ff71739a5194efc5c7bee9c37ad92a9e72646
Link:
https://www.unpac.me/results/575c49bf-bccf-4196-ad14-6d9442e04623/
SH256 hash:
b302fcb42934760527ba26528d13aaa8e2cc3150b8055485e5c27f24edaf2892
MD5 hash:
5e7f9ae99a7e6cc5a2f40a4a159bc3db
SHA1 hash:
7fe31637a9f6e2e6e463d2076702a00f92f06d76
Link:
https://www.unpac.me/results/575c49bf-bccf-4196-ad14-6d9442e04623/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/b302fcb42934/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/b302fcb42934760527ba26528d13aaa8e2cc3150b8055485e5c27f24edaf2892

File information

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

Web download

StealthWorker

Executable exe b302fcb42934760527ba26528d13aaa8e2cc3150b8055485e5c27f24edaf2892

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/1558724/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/181911/

Comments