MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 6e8b50ce0fb3831a5afff633fccf423434b203a604ba3b08a79f32bb03cf4561. 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


NanoCore


Vendor detections: 13


Intelligence 13 IOCs 1 YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 6e8b50ce0fb3831a5afff633fccf423434b203a604ba3b08a79f32bb03cf4561
SHA3-384 hash: 31423f443656d745d3e501142741afb852d4f843a3ec52cb41259afa6bdef370a6d8541db3ea5a6430c0e151c2572882
SHA1 hash: 37523bbc29985c9fb9c745c9ddfe6c68fe365d70
MD5 hash: 8d73718f7c4578ad7418e7ae088e6094
humanhash: hot-charlie-pennsylvania-happy
File name:Slip-00250522.exe
Download: download sample
Signature NanoCore
Create hunting rule
File size:175'616 bytes
First seen:2022-05-25 03:57:10 UTC
Last seen:2022-05-30 07:04:35 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'663 x AgentTesla, 19'478 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 192:EoguU4yBJYQWVlvht/NEgMK9WFRk+7Y/K6GDDDDDDDD/b3bnbZbZbZxdxdxdxdJW:ENhalvH/NEgdMRko6LMdxFY0x0ebX
TLSH T13A042C889D5CC61CEE29FAB10833D170CE2AFFCABA4C5A95E044FBD6397512146DD839
TrID 72.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.4% (.EXE) Win64 Executable (generic) (10523/12/4)
6.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.4% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.EXE) OS/2 Executable (generic) (2029/13)
File icon (PE):PE icon
dhash icon b9dc8cccdeded9b8 (12 x AgentTesla, 7 x Formbook, 7 x NanoCore)
Reporter abuse_ch
Tags:exe NanoCore RAT


Avatar
abuse_ch
NanoCore C2:
74.201.28.111:141

Indicators Of Compromise (IOCs)

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

IOCThreatFox Reference
74.201.28.111:141 https://threatfox.abuse.ch/ioc/630791/

Intelligence

File Origin
# of uploads :
3
# of downloads :
336
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
Slip-00250522.exe
Verdict:
Malicious activity
Analysis date:
2022-05-25 04:17:43 UTC
Tags:
formbook rat nanocore trojan stealer
Link:
https://app.any.run/tasks/c15c7791-2863-47c0-8f37-c0e07db18d1e

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/274330/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Sending an HTTP GET request
Running batch commands
Creating a process with a hidden window
Launching a process
Creating a file in the %temp% directory
Creating a process from a recently created file
Creating a file in the %AppData% subdirectories
Searching for synchronization primitives
Creating a file
Launching cmd.exe command interpreter
Setting browser functions hooks
Unauthorized injection to a recently created process
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Forced shutdown of a system process
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
obfuscated packed wacatac
Link:
https://www.filescan.io/uploads/628da91eefe9af159cbc4a6f/reports/3d07caa3-eb42-4658-afeb-787256e9e46c/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:
AZORult
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/b042899a-4605-4ae2-8845-721e19958ac5
Result
Threat name:
Nanocore, FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1001235
Signature
.NET source code contains potential unpacker
Allocates memory in foreign processes
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Detected Nanocore Rat
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Injects a PE file into a foreign processes
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Modifies the context of a thread in another process (thread injection)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Sigma detected: NanoCore
Snort IDS alert for network traffic
Tries to detect virtualization through RDTSC time measurements
Writes to foreign memory regions
Yara detected FormBook
Yara detected Generic Downloader
Yara detected Nanocore RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 633731 Sample: Slip-00250522.exe Startdate: 25/05/2022 Architecture: WINDOWS Score: 100 78 Snort IDS alert for network traffic 2->78 80 Multi AV Scanner detection for domain / URL 2->80 82 Found malware configuration 2->82 84 10 other signatures 2->84 10 Slip-00250522.exe 16 8 2->10         started        15 Rookyw.exe 14 2 2->15         started        process3 dnsIp4 58 3.70.157.79, 49720, 49746, 49752 AMAZON-02US United States 10->58 50 C:\Users\user\AppData\Roaming\...\Rookyw.exe, PE32 10->50 dropped 52 C:\Users\...\Uyunnpkrzxqtccvuxjyobiikm.exe, PE32 10->52 dropped 54 C:\Users\user\...\Slip-00250522.exe.log, ASCII 10->54 dropped 90 Writes to foreign memory regions 10->90 92 Allocates memory in foreign processes 10->92 94 Injects a PE file into a foreign processes 10->94 17 InstallUtil.exe 10->17         started        20 Uyunnpkrzxqtccvuxjyobiikm.exe 14 4 10->20         started        22 cmd.exe 1 10->22         started        96 Multi AV Scanner detection for dropped file 15->96 file5 signatures6 process7 signatures8 62 Modifies the context of a thread in another process (thread injection) 17->62 64 Maps a DLL or memory area into another process 17->64 66 Sample uses process hollowing technique 17->66 76 2 other signatures 17->76 24 explorer.exe 17->24 injected 68 Multi AV Scanner detection for dropped file 20->68 70 Writes to foreign memory regions 20->70 72 Allocates memory in foreign processes 20->72 74 Injects a PE file into a foreign processes 20->74 26 InstallUtil.exe 10 20->26         started        31 cmd.exe 1 20->31         started        33 conhost.exe 22->33         started        35 timeout.exe 1 22->35         started        process9 dnsIp10 37 help.exe 24->37         started        40 Rookyw.exe 2 24->40         started        60 74.201.28.111, 141, 49765, 49767 DEDIPATH-LLCUS United States 26->60 56 C:\Users\user\AppData\Roaming\...\run.dat, Non-ISO 26->56 dropped 98 Hides that the sample has been downloaded from the Internet (zone.identifier) 26->98 42 conhost.exe 31->42         started        44 timeout.exe 1 31->44         started        file11 signatures12 process13 signatures14 86 Maps a DLL or memory area into another process 37->86 88 Tries to detect virtualization through RDTSC time measurements 37->88 46 cmd.exe 37->46         started        process15 process16 48 conhost.exe 46->48         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/6e8b50ce0fb3831a5afff633fccf423434b203a604ba3b08a79f32bb03cf4561/
Threat name:
ByteCode-MSIL.Downloader.Seraph
Create hunting rule
Status:
Malicious
First seen:
2022-05-25 01:43:25 UTC
File Type:
PE (.Net Exe)
Extracted files:
19
AV detection:
19 of 26 (73.08%)
Threat level:
  3/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=n2fvbtqpwobruwx76yz7zt2cgq2lea5gas5dwcfht4zlwa6pivqq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
nanocore
Create hunting rule
Score:
  10/10
Tags:
family:formbook family:nanocore campaign:fs44 evasion keylogger persistence rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/220525-ejg4psgda9/
Behaviour
Delays execution with timeout.exe
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Adds Run key to start application
Checks whether UAC is enabled
Checks computer location settings
Loads dropped DLL
Executes dropped EXE
Formbook Payload
Formbook
NanoCore
suricata: ET MALWARE FormBook CnC Checkin (GET)
Malware Config
C2 Extraction:
74.201.28.111:141
Unpacked files
SH256 hash:
6e8b50ce0fb3831a5afff633fccf423434b203a604ba3b08a79f32bb03cf4561
MD5 hash:
8d73718f7c4578ad7418e7ae088e6094
SHA1 hash:
37523bbc29985c9fb9c745c9ddfe6c68fe365d70
Link:
https://www.unpac.me/results/67201043-888c-4b4e-94de-860b2fc198c8/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/6e8b50ce0fb3/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.35
Link:
https://yomi.yoroi.company/submissions/6e8b50ce0fb3831a5afff633fccf423434b203a604ba3b08a79f32bb03cf4561

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_Formbook_strings
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Formbook in memory
Reference:internal research
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:win_formbook_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.formbook.

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/274330/

Comments