MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8971ec3505739bcd5dc12bb69ae3fa3ba4f43f2ff0e53deae6b694d20f4a751b. 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


Intelligence 10 IOCs 1 YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 8971ec3505739bcd5dc12bb69ae3fa3ba4f43f2ff0e53deae6b694d20f4a751b
SHA3-384 hash: ae90d08505d6103958bc0a6b22695ba4b7bfcdb57438c666a5d90a3eefcfe94d42f13fac454692e67787be1b6896162c
SHA1 hash: 87d7914bb7e6b91e782a2370f46ceb11ced8c23e
MD5 hash: 98c77e758a852fe5c0884cc7897339d1
humanhash: alabama-river-mango-eleven
File name:Contract& Signed purchase Order.exe
Download: download sample
Signature NanoCore
Create hunting rule
File size:707'584 bytes
First seen:2021-06-14 04:21:16 UTC
Last seen:2021-06-14 04:49:26 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'741 x AgentTesla, 19'604 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:0tZM4e/ZUdtbUoKSSGe8mOModiyK7i8BCI4GHXQad28wPbUYRQMEENH+MB:0tNeBUdtVm8mOHdil7NQI4Ggad28evRh
TLSH 5AE4230811F21B7ED13E63B4462190144BFCEC2A2726CB8E5E9974F67B737560AE274E
Reporter abuse_ch
Tags:exe NanoCore RAT


Avatar
abuse_ch
NanoCore C2:
45.137.22.56:65535

Indicators Of Compromise (IOCs)

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

IOCThreatFox Reference
45.137.22.56:65535 https://threatfox.abuse.ch/ioc/104426/

Intelligence

File Origin
# of uploads :
2
# of downloads :
125
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Contract& Signed purchase Order.exe
Verdict:
Malicious activity
Analysis date:
2021-06-14 04:23:02 UTC
Tags:
trojan nanocore rat
Link:
https://app.any.run/tasks/3849859c-e441-46eb-bc59-e2c82bf59133

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Trojan.YakbeexMSIL.ZZ4.23555.31909.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
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:
NanoCoreRAT
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/d30f3df4-819e-40c1-919e-aca7be734e4d
Result
Threat name:
Nanocore
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/801475
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
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)
Initial sample is a PE file and has a suspicious name
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
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM3
Yara detected Nanocore RAT
Behaviour
Behavior Graph:
Download SVG
Detection:
nanocore
Create hunting rule
Link:
https://mwdb.cert.pl/sample/8971ec3505739bcd5dc12bb69ae3fa3ba4f43f2ff0e53deae6b694d20f4a751b/
Threat name:
ByteCode-MSIL.Spyware.Negasteal
Create hunting rule
Status:
Malicious
First seen:
2021-06-14 04:22:10 UTC
AV detection:
14 of 46 (30.43%)
Threat level:
  2/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=rfy6ynifoon42xobfo3jvy72hospipzp6dst32xgw2kned2kounq._file
Result
Malware family:
nanocore
Create hunting rule
Score:
  10/10
Tags:
family:nanocore evasion keylogger spyware stealer trojan
Link:
https://tria.ge/reports/210614-mj5ctb1hx2/
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
Checks whether UAC is enabled
NanoCore
Malware Config
C2 Extraction:
45.137.22.56:65535
127.0.0.1:65535
Unpacked files
SH256 hash:
e987e066b6b1ca5c3698a367d405b671a7f33e388289cb6b191faf4796478596
MD5 hash:
8b3814abb5e9cd9fb5da34bc71a4afc2
SHA1 hash:
8005c030dd9d0c1f146d18c4597f0a0f55e16577
Link:
https://www.unpac.me/results/c6517b0d-f260-458f-8869-db00e5f21d97/
SH256 hash:
8971ec3505739bcd5dc12bb69ae3fa3ba4f43f2ff0e53deae6b694d20f4a751b
MD5 hash:
98c77e758a852fe5c0884cc7897339d1
SHA1 hash:
87d7914bb7e6b91e782a2370f46ceb11ced8c23e
Link:
https://www.unpac.me/results/c6517b0d-f260-458f-8869-db00e5f21d97/
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/8971ec3505739bcd5dc12bb69ae3fa3ba4f43f2ff0e53deae6b694d20f4a751b

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:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

File information

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

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