MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 48bc7d857e4ba3e1945c01521208ae667a9bfd8d091efa22d25cfb853bc0001a. 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 YARA 12 File information Comments
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SHA256 hash: 48bc7d857e4ba3e1945c01521208ae667a9bfd8d091efa22d25cfb853bc0001a
SHA3-384 hash: 464f957be6e4529063cbdd0d1541680e646f82b862ab3e0263a5e9bdded664391985b17b1babf149fe3355f872e1fcbd
SHA1 hash: 14f51a47f71c2dd7d3dd9377fa0a34b9097480a7
MD5 hash: b698950c30744de62c334c037866931e
humanhash: lithium-floor-hot-bakerloo
File name:SecuriteInfo.com.BackDoor.SiggenNET.35.25310.15647
Download: download sample
Signature NanoCore
Create hunting rule
File size:25'088 bytes
First seen:2022-05-27 21:33:00 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'661 x AgentTesla, 19'474 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 192:maVGlII9fb06gnWzibhNgwzYUllllllllllllllllllllllllllllllllllllllG:maVGxBb/gnWzibhNgwmjP
Threatray 17'569 similar samples on MalwareBazaar
TLSH T10FB27215AF8C8E75EA263AF25B73F1400679AEC259558B5C64E030476EF2FF40E7E920
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 4730d8d4d4d830c7 (4 x NanoCore, 3 x SnakeKeylogger, 1 x BluStealer)
Reporter SecuriteInfoCom
Tags:exe NanoCore

Intelligence

File Origin
# of uploads :
1
# of downloads :
429
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
agenttesla
Create hunting rule
ID:
1
File name:
SecuriteInfo.com.BackDoor.SiggenNET.35.25310.15647
Verdict:
Malicious activity
Analysis date:
2022-05-27 21:35:01 UTC
Tags:
trojan rat agenttesla opendir stealer nanocore
Link:
https://app.any.run/tasks/ad1c8883-7878-4094-881e-8d3c03dd3641

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/275104/
Detection(s):
SecuriteInfo.com.BackDoor.SiggenNET.35.25310.15647.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
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
Creating a file
Searching for synchronization primitives
Using the Windows Management Instrumentation requests
Creating a window
Unauthorized injection to a recently created process
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
installutil.exe obfuscated packed
Link:
https://www.filescan.io/uploads/6291439065e33815993b7872/reports/e721d3bb-4f15-498d-ab24-00fb3ae7d463/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:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/f80d371e-3c69-4403-8f57-97b71d9de6f8
Result
Threat name:
Nanocore, AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1002956
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Allocates memory in foreign processes
Antivirus detection for URL or domain
Creates multiple autostart registry keys
Detected Nanocore Rat
Document exploit detected (process start blacklist hit)
Hides that the sample has been downloaded from the Internet (zone.identifier)
Injects a PE file into a foreign processes
Injects files into Windows application
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
Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines)
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Sigma detected: NanoCore
Snort IDS alert for network traffic
Tries to harvest and steal browser information (history, passwords, etc)
Tries to harvest and steal ftp login credentials
Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Writes to foreign memory regions
Yara detected AgentTesla
Yara detected Generic Downloader
Yara detected Nanocore RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 635452 Sample: SecuriteInfo.com.BackDoor.S... Startdate: 27/05/2022 Architecture: WINDOWS Score: 100 78 Snort IDS alert for network traffic 2->78 80 Multi AV Scanner detection for domain / URL 2->80 82 Malicious sample detected (through community Yara rule) 2->82 84 10 other signatures 2->84 8 SecuriteInfo.com.BackDoor.SiggenNET.35.25310.exe 16 8 2->8         started        13 Qylfpmj.exe 14 3 2->13         started        15 excel.exe 2->15         started        17 2 other processes 2->17 process3 dnsIp4 76 3.124.188.36, 49728, 49763, 49768 AMAZON-02US United States 8->76 64 C:\Users\user\AppData\Roaming\...\Qylfpmj.exe, PE32 8->64 dropped 66 C:\Users\user\AppData\...\Fmwyckqxckkflip.exe, PE32 8->66 dropped 68 C:\Users\user\...\Qylfpmj.exe:Zone.Identifier, ASCII 8->68 dropped 70 SecuriteInfo.com.B...ET.35.25310.exe.log, ASCII 8->70 dropped 108 Creates multiple autostart registry keys 8->108 110 Writes to foreign memory regions 8->110 112 Allocates memory in foreign processes 8->112 114 Injects a PE file into a foreign processes 8->114 19 InstallUtil.exe 16 8 8->19         started        24 Fmwyckqxckkflip.exe 14 4 8->24         started        26 InstallUtil.exe 8->26         started        36 3 other processes 8->36 116 Multi AV Scanner detection for dropped file 13->116 118 Machine Learning detection for dropped file 13->118 28 cmd.exe 13->28         started        120 Document exploit detected (process start blacklist hit) 15->120 122 Injects files into Windows application 15->122 30 conhost.exe 15->30         started        32 conhost.exe 17->32         started        34 cmd.exe 17->34         started        file5 signatures6 process7 dnsIp8 72 74.201.28.111, 141, 49770, 49778 DEDIPATH-LLCUS United States 19->72 60 C:\Users\user\AppData\Roaming\...\excel.exe, PE32 19->60 dropped 86 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 19->86 88 Tries to steal Mail credentials (via file / registry access) 19->88 90 Creates multiple autostart registry keys 19->90 102 3 other signatures 19->102 74 192.168.2.1 unknown unknown 24->74 92 Multi AV Scanner detection for dropped file 24->92 94 Machine Learning detection for dropped file 24->94 96 Writes to foreign memory regions 24->96 104 2 other signatures 24->104 38 InstallUtil.exe 24->38         started        42 cmd.exe 24->42         started        98 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 26->98 100 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 26->100 44 conhost.exe 28->44         started        46 timeout.exe 28->46         started        48 conhost.exe 36->48         started        50 timeout.exe 1 36->50         started        file9 signatures10 process11 file12 62 C:\Users\user\AppData\Roaming\...\run.dat, data 38->62 dropped 106 Hides that the sample has been downloaded from the Internet (zone.identifier) 38->106 52 conhost.exe 42->52         started        54 timeout.exe 42->54         started        56 conhost.exe 48->56         started        58 timeout.exe 48->58         started        signatures13 process14
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/48bc7d857e4ba3e1945c01521208ae667a9bfd8d091efa22d25cfb853bc0001a/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-05-27 21:14:29 UTC
File Type:
PE (.Net Exe)
Extracted files:
4
AV detection:
17 of 41 (41.46%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=jc6h3bl6jor6dfc4afjbecfomz5jx7mnbeppuiwslt5yko6aaana._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
Similar samples:
00ab87ff45ff5e46a743254b459c58643c411fdab02b1ff908e4e323dfb75fb1
NanoCore
1b7382ea2de070f5b428fc1cab6608b28f475e928ac8bc26ab30bbfa21703a5c
NanoCore
386d1d77650707bdbaae831b56662183b946b8c8588ec5860f1bede73b05f9a4
NanoCore
3c42490be13ea791feda53e89f19abc2c4326cc581e9f7fb4040340e38b5a7c6
NanoCore
5981e4680be680e021707c380061302007ca6bc40e987b711e7fc2c0b59f157b
NanoCore
5d0676bfa91a4d8b232853490351f6b16afc582cbd181d0343b1d08dd97e0c2f
NanoCore
eade330b178b86366b371786fd358a905e3051a3653b134db0fe4ae9c8dfa676
NanoCore
fb1afa6e7bae619514d7d2ff10a9cc96a03b5e10640059f592c7e5f3d6093d31
NanoCore
+ 17'559 additional samples on MalwareBazaar
Result
Malware family:
nanocore
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla family:nanocore collection keylogger persistence spyware stealer suricata trojan
Link:
https://tria.ge/reports/220527-1d6qrshdhj/
Behaviour
Delays execution with timeout.exe
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
outlook_office_path
outlook_win_path
Enumerates physical storage devices
Suspicious use of SetThreadContext
Accesses Microsoft Outlook profiles
Adds Run key to start application
Checks computer location settings
Loads dropped DLL
Executes dropped EXE
AgentTesla
NanoCore
suricata: ET MALWARE AgentTesla Communicating with CnC Server
Malware Config
C2 Extraction:
http://74.201.28.111/terhy/qc/inc/dfb2a0c54d487e.php
74.201.28.111:141
Unpacked files
SH256 hash:
48bc7d857e4ba3e1945c01521208ae667a9bfd8d091efa22d25cfb853bc0001a
MD5 hash:
b698950c30744de62c334c037866931e
SHA1 hash:
14f51a47f71c2dd7d3dd9377fa0a34b9097480a7
Link:
https://www.unpac.me/results/98035ec4-25b5-4d60-8e28-49fc68a60e97/
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/48bc7d857e4ba3e1945c01521208ae667a9bfd8d091efa22d25cfb853bc0001a

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:ach_NanoCore
Create hunting rule
Author:abuse.ch
Rule name:malware_Nanocore_strings
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Nanocore in memory
Reference:internal research
Rule name:MALWARE_Win_AgentTeslaV3
Create hunting rule
Author:ditekSHen
Description:AgentTeslaV3 infostealer payload
Rule name:MALWARE_Win_NanoCore
Create hunting rule
Author:ditekSHen
Description:Detects NanoCore
Rule name:nanocore_rat
Create hunting rule
Author:jeFF0Falltrades
Rule name:Nanocore_RAT_Feb18_1
Create hunting rule
Author:Florian Roth
Description:Detects Nanocore RAT
Reference:Internal Research - T2T
Rule name:Nanocore_RAT_Feb18_1_RID2DF1
Create hunting rule
Author:Florian Roth
Description:Detects Nanocore RAT
Reference:Internal Research - T2T
Rule name:Nanocore_RAT_Gen_2
Create hunting rule
Author:Florian Roth
Description:Detetcs the Nanocore RAT
Reference:https://www.sentinelone.com/blogs/teaching-an-old-rat-new-tricks/
Rule name:Nanocore_RAT_Gen_2_RID2D96
Create hunting rule
Author:Florian Roth
Description:Detetcs the Nanocore RAT
Reference:https://www.sentinelone.com/blogs/teaching-an-old-rat-new-tricks/
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:win_nanocore_w0
Create hunting rule
Author:Kevin Breen <kevin@techanarchy.net>

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/275104/

Comments