MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 751b9d20eea57288317d00cfb81935ee3a39e49b5043c69ee4c49e6cac41d9fa. 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: 10
| SHA256 hash: | 751b9d20eea57288317d00cfb81935ee3a39e49b5043c69ee4c49e6cac41d9fa |
|---|---|
| SHA3-384 hash: | 50114bed87dd9c9c9ec4ccff22f749273c5510ddc6974db7f8c432de1c44c136fed40098fb1788b1579e6ff54e30e02f |
| SHA1 hash: | 4a141248d3e2b536a0b5c2f0639751d52e99fbf3 |
| MD5 hash: | 23f7aa7bd6698d64973fd43e3ffbbe5d |
| humanhash: | illinois-wolfram-earth-burger |
| File name: | 23f7aa7bd6698d64973fd43e3ffbbe5d.exe |
| Download: | download sample |
| Signature | NanoCore |
| File size: | 923'136 bytes |
| First seen: | 2021-03-08 14:02:29 UTC |
| Last seen: | 2022-01-21 03:52:11 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger) |
| ssdeep | 24576:9o1WG6N6f6I6d5ZzuFwCMx0HwfY0/54e88:i8G6N6f6I6d5VuFT2fYWp8 |
| Threatray | 1'633 similar samples on MalwareBazaar |
| TLSH | 7315AF106AD4D908E03E473468A5D93047B7FD22E737DA5F7BE4369B3F63641DA22222 |
| Reporter |  abuse_ch |
| Tags: | exe mansengco778-ddns-net NanoCore RAT |
Intelligence
File Origin
# of uploads :
2
# of downloads :
170
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
23f7aa7bd6698d64973fd43e3ffbbe5d.exe
Verdict:
Malicious activity
Analysis date:
2021-03-08 14:04:35 UTC
Tags:
rat nanocore
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
NanoCore
Detection(s):
Result
Verdict:
Clean
Maliciousness:
Behaviour
Creating a window
Sending a UDP request
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.
Result
Threat name:
Nanocore
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Signature
.NET source code contains potential unpacker
.NET source code contains very large strings
Allocates memory in foreign processes
Connects to many ports of the same IP (likely port scanning)
Detected Nanocore Rat
Hides that the sample has been downloaded from the Internet (zone.identifier)
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 dropped file
Multi AV Scanner detection for submitted file
Sigma detected: NanoCore
Sigma detected: Scheduled temp file as task from temp location
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses dynamic DNS services
Uses schtasks.exe or at.exe to add and modify task schedules
Writes to foreign memory regions
Yara detected AntiVM_3
Yara detected Nanocore RAT
Behaviour
Behavior Graph:
Gathering data
Threat name:
ByteCode-MSIL.Trojan.Bulz
Status:
Malicious
First seen:
2021-03-08 09:25:49 UTC
File Type:
PE (.Net Exe)
Extracted files:
61
AV detection:
20 of 47 (42.55%)
Threat level:
5/5
Detection(s):
Malicious file
Verdict:
malicious
Label(s):
nanocorerat
Similar samples:
+ 1'623 additional samples on MalwareBazaar
Result
Malware family:
nanocore
Score:
10/10
Tags:
family:nanocore keylogger spyware stealer trojan
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
NanoCore
Malware Config
C2 Extraction:
mansengco778.ddns.net:19864
newcracker.duckdns.org:19864
newcracker.duckdns.org:19864
Unpacked files
SH256 hash:
f9d949d2f56c449c5d346bb93ed04d38426f563b022dd179ae330dab46682c3b
MD5 hash:
871e23d748ba756eaab5777708f250f8
SHA1 hash:
c9816d4ab38541aaab9aa3eab7cb4898d0b72e4a
SH256 hash:
751b9d20eea57288317d00cfb81935ee3a39e49b5043c69ee4c49e6cac41d9fa
MD5 hash:
23f7aa7bd6698d64973fd43e3ffbbe5d
SHA1 hash:
4a141248d3e2b536a0b5c2f0639751d52e99fbf3
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Kryptik
Score:
0.80
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 |
|---|---|
| Author: | abuse.ch |
| Rule name: | Nanocore |
|---|---|
| Author: | JPCERT/CC Incident Response Group |
| Description: | detect Nanocore in memory |
| Reference: | internal research |
| Rule name: | nanocore_rat |
|---|---|
| Author: | jeFF0Falltrades |
| Rule name: | Nanocore_RAT_Feb18_1 |
|---|---|
| Author: | Florian Roth |
| Description: | Detects Nanocore RAT |
| Reference: | Internal Research - T2T |
| Rule name: | Nanocore_RAT_Gen_2 |
|---|---|
| Author: | Florian Roth |
| Description: | Detetcs the Nanocore RAT |
| Reference: | https://www.sentinelone.com/blogs/teaching-an-old-rat-new-tricks/ |
| Rule name: | win_nanocore_w0 |
|---|---|
| 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.
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