MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ac4013eb7d6c5dbbf90b163c9ebc5cf8fe40090132635764de6624ac2e3faf40. 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: 8


Intelligence 8 IOCs YARA 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: ac4013eb7d6c5dbbf90b163c9ebc5cf8fe40090132635764de6624ac2e3faf40
SHA3-384 hash: d932bcc2252e3618c9f92ef1fdb32ab853996b5faea2353470c4f0fc7760fde53903bfca9aa499ecff1ce7a1c0691645
SHA1 hash: 2211c6934d8501e2cdeaab63e72566604384d8e3
MD5 hash: 114597d1747614501b549e3bad7097c3
humanhash: twenty-hot-steak-solar
File name:Quotation Request-RFQ#2020-11-19.exe
Download: download sample
Signature NanoCore
Create hunting rule
File size:610'816 bytes
First seen:2020-11-19 08:56:30 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'205 x SnakeKeylogger)
ssdeep 12288:STRGtC1BDRjOGlIJJM2u6Yr2pvxGO6WIUd:Sg41DleMUy4pKj+
Threatray 10'423 similar samples on MalwareBazaar
TLSH B2D49D26BB5CEB75D21E61B4640ED1B54812FEE48A42611AFFC13C2E357298920CFED7
Reporter abuse_ch
Tags:exe NanoCore RAT


Avatar
abuse_ch
Malspam distributing NanoCore:

HELO: magnum.com.co
Sending IP: 185.222.57.141
From: Henry Hurtado Avila <hhurtado@magnum.com.co>
Subject: RE: Product list Quotation #RFQ-11-19-2020.iso
Attachment: Quotation Request-RFQ2020-11-19.r00 (contains "Quotation Request-RFQ#2020-11-19.exe")

Intelligence

File Origin
# of uploads :
1
# of downloads :
221
Origin country :
n/a
Vendor Threat Intelligence
Detection(s):
Porcupine.MSIL.Kryptik.XXF.97437.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Creating a process from a recently created file
Creating a window
Running batch commands
Creating a process with a hidden window
Using the Windows Management Instrumentation requests
Launching a process
Creating a file
Reading critical registry keys
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Stealing user critical data
Enabling autorun
Result
Gathering data
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/542568
Signature
Allocates memory in foreign processes
Creates an undocumented autostart registry key
Found malware configuration
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
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)
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 access)
Writes to foreign memory regions
Yara detected AgentTesla
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 320384 Sample: Quotation Request-RFQ#2020-... Startdate: 19/11/2020 Architecture: WINDOWS Score: 100 47 Found malware configuration 2->47 49 Multi AV Scanner detection for dropped file 2->49 51 Multi AV Scanner detection for submitted file 2->51 53 4 other signatures 2->53 7 Quotation Request-RFQ#2020-11-19.exe 7 2->7         started        process3 file4 35 C:\Users\user\AppData\Local\Temp\svhost.exe, PE32 7->35 dropped 37 C:\Users\user\AppData\Local\...\name.exe.lnk, MS 7->37 dropped 39 Quotation Request-RFQ#2020-11-19.exe.log, ASCII 7->39 dropped 57 Writes to foreign memory regions 7->57 59 Allocates memory in foreign processes 7->59 61 Injects a PE file into a foreign processes 7->61 11 svhost.exe 2 7->11         started        15 cmd.exe 1 7->15         started        17 cmd.exe 3 7->17         started        20 cmd.exe 1 7->20         started        signatures5 process6 dnsIp7 41 goldenamoonresorts.com 139.162.21.249, 49720, 587 LINODE-APLinodeLLCUS Netherlands 11->41 43 mail.goldenamoonresorts.com 11->43 45 192.168.2.1 unknown unknown 11->45 63 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 11->63 65 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 11->65 67 Tries to steal Mail credentials (via file access) 11->67 69 3 other signatures 11->69 22 reg.exe 1 1 15->22         started        25 conhost.exe 15->25         started        31 C:\Users\user\AppData\Local\Temp\...\name.exe, PE32 17->31 dropped 27 conhost.exe 17->27         started        33 C:\Users\user\...\name.exe:Zone.Identifier, ASCII 20->33 dropped 29 conhost.exe 20->29         started        file8 signatures9 process10 signatures11 55 Creates an undocumented autostart registry key 22->55
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/ac4013eb7d6c5dbbf90b163c9ebc5cf8fe40090132635764de6624ac2e3faf40/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2020-11-18 23:11:48 UTC
AV detection:
23 of 29 (79.31%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=vrabh235nro3x6ilcy6j5pc47d7eacibgjrvozg6myskylr7v5aa._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
Similar samples:
2042f931e00f8800c6491bbb74c973d4187f226bda73dec18e2437f16d20a21e
NanoCore
434afdd1d26fe65ea4803d0ab227247da43803a35f8d4ef23ad10ea300af9b31
NanoCore
7d0d4699bdcc254242758c7bb6d595cba262eea0b08f0fd15b59a06921f84d5c
NanoCore
88b9e4dbf296cb7808028b535f008cc759b200097dd4e3682bf91b93e283a9b5
NanoCore
9f1d012b4136a91214c631157c3ecba83c82ada463184fc05eaa7ef44a008b57
NanoCore
9f4390c14715f1925addce9b86bdb5b52e3b80563eb42531548ee360b9b7044e
NanoCore
cedc75da62cc513dfe35c48b2ee7444e6a3206fd19969cf027d7311c17e75029
NanoCore
d56a73b458ccf4059fe4eb99b461810f9cdb60c639e3c038dd4908667d04b2e8
NanoCore
de86cb4227717aa6e3818fc1f0ec62d733b1e5e941f410db7c0065ea4c4f7e94
NanoCore
ed2d120151830f0dd5f1ba2f201d05bdf90702efa5d41365bd54b9b04c15aa28
NanoCore
+ 10'413 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla keylogger spyware stealer trojan
Link:
https://tria.ge/reports/201119-8dwg3hc7vs/
Behaviour
NTFS ADS
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Loads dropped DLL
Reads data files stored by FTP clients
Reads user/profile data of local email clients
Reads user/profile data of web browsers
Executes dropped EXE
AgentTesla Payload
AgentTesla
Unpacked files
SH256 hash:
ac4013eb7d6c5dbbf90b163c9ebc5cf8fe40090132635764de6624ac2e3faf40
MD5 hash:
114597d1747614501b549e3bad7097c3
SHA1 hash:
2211c6934d8501e2cdeaab63e72566604384d8e3
Link:
https://www.unpac.me/results/24489965-c8a9-4ae8-8cf0-85645a62f968/
SH256 hash:
0897d0954dded59cbe044276d8a380bcd3e5d2fdc86bddb01d3dfaac14050737
MD5 hash:
b23f431cfbca2c6409e18459da7d2fa0
SHA1 hash:
a7b54495e410718a5dbb77a2b179fbecf016a7e9
Detections:
win_agent_tesla_w1
Create hunting rule
Link:
https://www.unpac.me/results/24489965-c8a9-4ae8-8cf0-85645a62f968/
Parent samples :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 note that we are no longer able to provide a coverage score for Virus Total.

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:AgentTesla_extracted_bin
Create hunting rule
Author:James_inthe_box
Description:AgentTesla extracted
Rule name:AgentTesla_mod_tough_bin
Create hunting rule
Author:James_inthe_box
Reference:https://app.any.run/tasks/3b5d409c-978b-4a95-a5f1-399f0216873d/
Rule name:Agenttesla_type2
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Agenttesla in memory
Reference:internal research
Rule name:agent_tesla_2019
Create hunting rule
Author:jeFF0Falltrades
Rule name:CAP_HookExKeylogger
Create hunting rule
Author:Brian C. Bell -- @biebsmalwareguy
Reference:https://github.com/DFIRnotes/rules/blob/master/CAP_HookExKeylogger.yar
Rule name:win_agent_tesla_v1
Create hunting rule
Author:Johannes Bader @viql
Description:detects Agent Tesla
Rule name:win_agent_tesla_w1
Create hunting rule
Author:govcert_ch
Description:Detect Agent Tesla based on common .NET code sequences

File information

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

Malspam

NanoCore

r00 99547087bc1d72a69d66a7ad70bc9a972882a3c0fcdcc95962b3db4e5f9a2915

NanoCore

Executable exe ac4013eb7d6c5dbbf90b163c9ebc5cf8fe40090132635764de6624ac2e3faf40

(this sample)

  
Dropped by
MD5 7cf071f4cfb16fe79bd5edebc5638328
  
Delivery method
Distributed via e-mail attachment
  
Dropped by
SHA256 99547087bc1d72a69d66a7ad70bc9a972882a3c0fcdcc95962b3db4e5f9a2915

Comments