MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 e28f241aecdb850910f2e2dea30dcbc23d31578ea3b7a74c9fa30460669f7c83. 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: 18


Intelligence 18 IOCs YARA 16 File information Comments
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SHA256 hash: e28f241aecdb850910f2e2dea30dcbc23d31578ea3b7a74c9fa30460669f7c83
SHA3-384 hash: a321005e95aac2644086587982a67dda6797921d65d6372b3b620199bc1b02a2ee562a3c583778c4569a1bf588435550
SHA1 hash: a9fac95535d4ef69a6f7b0550ed6bba65f96dbc3
MD5 hash: a22d0177e9d6943719508b77ed4ac91f
humanhash: uranus-lima-colorado-hot
File name:a22d0177e9d6943719508b77ed4ac91f.exe
Download: download sample
Signature NanoCore
Create hunting rule
File size:615'930 bytes
First seen:2024-06-11 16:20:22 UTC
Last seen:2024-06-11 17:22:15 UTC
File type:Executable exe
MIME type:application/x-dosexec
ssdeep 12288:H+jJ7GB/lLTXVzTpmGlWK74RTeQUj5VJ1MwzMRs5ax7W:H+dKB/lnVHMGMK74VfUjXTMEMRCa8
TLSH T141D423069AD0947AFF9FD1B25933955083B8F6B2DD32C3266AC0657047737082AAFDD2
TrID 44.4% (.EXE) Win64 Executable (generic) (10523/12/4)
21.3% (.EXE) Win16 NE executable (generic) (5038/12/1)
8.7% (.ICL) Windows Icons Library (generic) (2059/9)
8.5% (.EXE) OS/2 Executable (generic) (2029/13)
8.4% (.EXE) Generic Win/DOS Executable (2002/3)
Reporter abuse_ch
Tags:exe NanoCore RAT


Avatar
abuse_ch
NanoCore C2:
94.156.66.207:63882

Intelligence

File Origin
# of uploads :
2
# of downloads :
442
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
nanocore
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ID:
1
File name:
e28f241aecdb850910f2e2dea30dcbc23d31578ea3b7a74c9fa30460669f7c83.exe
Verdict:
Malicious activity
Analysis date:
2024-06-11 16:21:32 UTC
Tags:
nanocore
Link:
https://app.any.run/tasks/9516629b-22d0-4ac6-bec1-c063ed3c67d8

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Trojan.Siggen28.56073.12896.23485.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=66687a77a439c6d6b0877bd3win7simulatehigh_evasion
Tags:
Banker Encryption Execution Generic Stealth Zusy Dexter
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
Creating a process with a hidden window
Launching a process
Searching for synchronization primitives
Launching the default Windows debugger (dwwin.exe)
Creating a file in the %AppData% subdirectories
Creating a file in the Program Files subdirectories
DNS request
Searching for the window
Connection attempt
Blocking the User Account Control
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Adding an exclusion to Microsoft Defender
Unauthorized injection to a system process
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
nanocore overlay packed stealer zusy
Link:
https://www.filescan.io/uploads/6668796f0bf5978c0b0e5eec/reports/5ba10836-ddf1-4830-9437-2c0023456f24/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/e28f241aecdb850910f2e2dea30dcbc23d31578ea3b7a74c9fa30460669f7c83
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:
NanoCoreRAT
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/31825a78-cdcf-46ba-9af9-fee46f54d41b
Result
Threat name:
Nanocore
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Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1455319
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
AI detected suspicious sample
Allocates memory in foreign processes
Antivirus / Scanner detection for submitted sample
C2 URLs / IPs found in malware configuration
Detected Nanocore Rat
Disables UAC (registry)
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Injects a PE file into a foreign processes
Loading BitLocker PowerShell Module
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Sigma detected: NanoCore
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Snort IDS alert for network traffic
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses dynamic DNS services
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected Nanocore RAT
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1455319 Sample: kSf9sIgyxl.exe Startdate: 11/06/2024 Architecture: WINDOWS Score: 100 36 staywicked99.ddns.net 2->36 42 Snort IDS alert for network traffic 2->42 44 Found malware configuration 2->44 46 Malicious sample detected (through community Yara rule) 2->46 50 11 other signatures 2->50 8 kSf9sIgyxl.exe 1 3 2->8         started        11 dnshost.exe 2 2->11         started        signatures3 48 Uses dynamic DNS services 36->48 process4 signatures5 52 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 8->52 54 Writes to foreign memory regions 8->54 56 Allocates memory in foreign processes 8->56 58 3 other signatures 8->58 13 jsc.exe 1 8 8->13         started        18 powershell.exe 23 8->18         started        20 WerFault.exe 19 16 8->20         started        22 conhost.exe 11->22         started        process6 dnsIp7 38 staywicked99.ddns.net 94.156.66.207, 49717, 49720, 49721 TERASYST-ASBG Bulgaria 13->38 40 127.0.0.1 unknown unknown 13->40 30 C:\Users\user\AppData\Roaming\...\run.dat, Non-ISO 13->30 dropped 32 C:\Program Files (x86)\DNS Host\dnshost.exe, PE32 13->32 dropped 60 Detected Nanocore Rat 13->60 62 Hides that the sample has been downloaded from the Internet (zone.identifier) 13->62 24 WerFault.exe 23 16 13->24         started        64 Loading BitLocker PowerShell Module 18->64 26 WmiPrvSE.exe 18->26         started        28 conhost.exe 18->28         started        34 C:\ProgramData\Microsoft\...\Report.wer, Unicode 20->34 dropped file8 signatures9 process10
Score:
97%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/e28f241aecdb850910f2e2dea30dcbc23d31578ea3b7a74c9fa30460669f7c83
Detection:
nanocore
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Link:
https://mwdb.cert.pl/sample/e28f241aecdb850910f2e2dea30dcbc23d31578ea3b7a74c9fa30460669f7c83/
Threat name:
ByteCode-MSIL.Trojan.Zusy
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Status:
Malicious
First seen:
2024-05-28 08:46:03 UTC
File Type:
PE+ (.Net Exe)
Extracted files:
2
AV detection:
20 of 24 (83.33%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=4khsigxm3ocqsehs4lpkgdolyi6tcv4ouo32ote7umcgazu7psbq._file
Verdict:
malicious
Label(s):
nanocorerat
Create hunting rule
Result
Malware family:
nanocore
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Score:
  10/10
Tags:
family:nanocore evasion execution keylogger persistence spyware stealer trojan
Link:
https://tria.ge/reports/240611-ttm52atcqk/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
System policy modification
Enumerates physical storage devices
Drops file in Program Files directory
Suspicious use of SetThreadContext
Adds Run key to start application
Checks whether UAC is enabled
Checks computer location settings
Unexpected DNS network traffic destination
Windows security modification
Command and Scripting Interpreter: PowerShell
NanoCore
UAC bypass
Windows security bypass
Malware Config
C2 Extraction:
staywicked99.ddns.net:63882
127.0.0.1:63882
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/417bdbdc-8ca5-4fd9-b009-053ddf6ca2d4
Unpacked files
SH256 hash:
212780378a228f7f48ca0f66425d8ab0ecc5dcaf8abc41117a13f2639ae87648
MD5 hash:
114891aadb0b6fff36b3d1bfb07d3ef8
SHA1 hash:
c056c3028db3e06bdf740885e6ff1f22d451a7dc
Link:
https://www.unpac.me/results/a5b90070-5d75-4278-937e-4472fc102a11/
SH256 hash:
e28f241aecdb850910f2e2dea30dcbc23d31578ea3b7a74c9fa30460669f7c83
MD5 hash:
a22d0177e9d6943719508b77ed4ac91f
SHA1 hash:
a9fac95535d4ef69a6f7b0550ed6bba65f96dbc3
Link:
https://www.unpac.me/results/a5b90070-5d75-4278-937e-4472fc102a11/
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/e28f241aecdb850910f2e2dea30dcbc23d31578ea3b7a74c9fa30460669f7c83

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_NanoCore
Create hunting rule
Author:ditekSHen
Description:Detects NanoCore
Rule name:Nanocore
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Author:JPCERT/CC Incident Response Group
Description:detect Nanocore in memory
Reference:internal research
Rule name:nanocore_rat
Create hunting rule
Author:jeFF0Falltrades
Rule name:Nanocore_RAT_Feb18_1
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Author:Florian Roth (Nextron Systems)
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 (Nextron Systems)
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:NET
Create hunting rule
Author:malware-lu
Rule name:NETexecutableMicrosoft
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:pe_no_import_table
Create hunting rule
Description:Detect pe file that no import table
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:Windows_Trojan_Nanocore_d8c4e3c5
Create hunting rule
Author:Elastic Security
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.

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (GUARD_CF)high

Comments