MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 86c1f1b4e67bcece57ab2f98a224a3ab4d46e9bdca3abbd64f618bb5e00ac69c. 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 YARA 8 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 86c1f1b4e67bcece57ab2f98a224a3ab4d46e9bdca3abbd64f618bb5e00ac69c
SHA3-384 hash: c83feff2c52458f108da314449148bcbb1e9dcbc70fc244c5b3edb8b1904573f53667241cb8003a79bd1e8bfdb3a985a
SHA1 hash: 01ee195e55931761600881d7a5694f9564c6df33
MD5 hash: ae432213626640771634698367f342af
humanhash: november-sierra-seven-nuts
File name:CV_Job Request___.exe
Download: download sample
Signature NanoCore
Create hunting rule
File size:1'061'584 bytes
First seen:2020-09-01 13:37:59 UTC
Last seen:2020-09-01 14:54:42 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 24576:IH7m0iDsOVtOm3CFcYEjQ6XFzhImmaZKkNL7/YJjCK9H0Lurd+yZ:k7m0+hh3CFcYb61Bm4TYJuK9H0byZ
Threatray 9'216 similar samples on MalwareBazaar
TLSH BD35D00273C896B2F9BFE873680D21C115067EEF458652762F893F1A67E29C424F9BD1
Reporter James_inthe_box
Tags:exe NanoCore

Intelligence

File Origin
# of uploads :
2
# of downloads :
235
Origin country :
n/a
Vendor Threat Intelligence
Detection:
AgentTeslaV2
Create hunting rule
Link:
https://www.capesandbox.com/analysis/54029/
Detection(s):
Sanesecurity.Rogue.0hr.20200901-0209.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
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
Launching a process
Creating a file
Creating a file in the %AppData% directory
Deleting a recently created file
Creating a file in the %AppData% subdirectories
Creating a file in the Program Files subdirectories
DNS request
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Enabling autorun
Enabling autorun by creating a file
Result
Threat name:
Nanocore AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/456637
Signature
Allocates memory in foreign processes
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Creates an undocumented autostart registry key
Detected Nanocore Rat
Found malware configuration
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
Uses dynamic DNS services
Uses schtasks.exe or at.exe to add and modify task schedules
Writes to foreign memory regions
Yara detected AgentTesla
Yara detected Nanocore RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 280701 Sample: CV_Job Request___.exe Startdate: 01/09/2020 Architecture: WINDOWS Score: 100 94 yaunywxb.ddns.net 2->94 98 Found malware configuration 2->98 100 Malicious sample detected (through community Yara rule) 2->100 102 Antivirus detection for dropped file 2->102 104 12 other signatures 2->104 10 CV_Job Request___.exe 11 2->10         started        14 dhcpmon.exe 2->14         started        16 File.exe 2->16         started        18 dhcpmon.exe 2->18         started        signatures3 process4 file5 84 C:\Users\user\AppData\Local\Temp\svhost.exe, PE32 10->84 dropped 86 C:\Users\user\AppData\Local\...\name.exe.jpg, PE32 10->86 dropped 88 C:\Users\user\AppData\Local\Temp\File.exe, PE32 10->88 dropped 90 3 other malicious files 10->90 dropped 118 Writes to foreign memory regions 10->118 120 Allocates memory in foreign processes 10->120 122 Injects a PE file into a foreign processes 10->122 20 File.exe 6 10->20         started        24 cmd.exe 10->24         started        26 svhost.exe 1 12 10->26         started        36 4 other processes 10->36 28 dhcpmon.exe 14->28         started        30 dhcpmon.exe 14->30         started        32 File.exe 16->32         started        34 dhcpmon.exe 18->34         started        signatures6 process7 file8 76 C:\Users\user\AppData\Roaming\hpkIdrg.exe, PE32 20->76 dropped 78 C:\Users\user\AppData\Local\...\tmpDEC4.tmp, XML 20->78 dropped 106 Antivirus detection for dropped file 20->106 108 Multi AV Scanner detection for dropped file 20->108 110 Machine Learning detection for dropped file 20->110 112 Injects a PE file into a foreign processes 20->112 38 File.exe 20->38         started        43 schtasks.exe 20->43         started        45 reg.exe 24->45         started        47 conhost.exe 24->47         started        49 iexplore.exe 12 87 26->49         started        51 conhost.exe 36->51         started        53 conhost.exe 36->53         started        55 conhost.exe 36->55         started        57 timeout.exe 36->57         started        signatures9 process10 dnsIp11 96 yaunywxb.ddns.net 38->96 80 C:\Program Files (x86)\...\dhcpmon.exe, PE32 38->80 dropped 82 C:\Users\user\AppData\Roaming\...\run.dat, Non-ISO 38->82 dropped 114 Hides that the sample has been downloaded from the Internet (zone.identifier) 38->114 59 schtasks.exe 38->59         started        61 schtasks.exe 38->61         started        63 conhost.exe 43->63         started        116 Creates an undocumented autostart registry key 45->116 65 iexplore.exe 49->65         started        68 iexplore.exe 1 66 49->68         started        70 conhost.exe 51->70         started        file12 signatures13 process14 dnsIp15 72 conhost.exe 59->72         started        74 conhost.exe 61->74         started        92 192.168.2.1 unknown unknown 65->92 process16
Detection:
nanocore
Create hunting rule
Link:
https://mwdb.cert.pl/sample/86c1f1b4e67bcece57ab2f98a224a3ab4d46e9bdca3abbd64f618bb5e00ac69c/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2020-09-01 04:32:04 UTC
File Type:
PE (.Net Exe)
Extracted files:
7
AV detection:
25 of 29 (86.21%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=q3a7dnhgpphm4v5lf6mkejfdvngun2n5zi5lxvspmgf3lyaky2oa._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
Similar samples:
05f08d66b6f118c60851b9b3a9f86eb9db05955af1bb2b6bbdd9b5308972b3b3
NanoCore
117ef07f45b0916e5d43168f52a5efbb756947d6aadd3389293adba4309ddc89
NanoCore
2d37d614507a6d513d85edfa6c65a721b44740b1480b34df76f5debd64bbd73c
NanoCore
4163f850032d58f8df3a47be1173ff7ff5d89c989512bd08979e724261994345
NanoCore
602539024550629c94790807ab0f6b99379a53767b14375963e64b71a2185408
NanoCore
67071ee123273c73bc20939e95fc9aeacd0d2aaeb57a3140fd6d3cc2d2aa0dae
NanoCore
7867241670b0fd664072e1bf555bc56b8291a80e01adeebcffcc768a0e88c117
NanoCore
b250144e3bf196501c5064576d34ff66398323d7862e957f359a263d7a0c3636
NanoCore
c4c3c994e1b56b45e57e747cdd6a78cf9d0b735d169538b499ec94b1670f0b99
NanoCore
dcbfc03cfe9523c25ab335f599cebcbbe8f2439ef7ab973aa9ec0330e4e7d11f
NanoCore
+ 9'206 additional samples on MalwareBazaar
Result
Malware family:
nanocore
Create hunting rule
Score:
  10/10
Tags:
keylogger stealer persistence trojan spyware family:agenttesla evasion family:nanocore
Link:
https://tria.ge/reports/200901-zjes636zwj/
Behaviour
Creates scheduled task(s)
Delays execution with timeout.exe
NTFS ADS
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Drops file in Program Files directory
Suspicious use of SetThreadContext
Adds Run key to start application
Checks whether UAC is enabled
Loads dropped DLL
Executes dropped EXE
AgentTesla Payload
AgentTesla
NanoCore
Malware Config
C2 Extraction:
yaunywxb.ddns.net:2451
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Kryptik
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/86c1f1b4e67bcece57ab2f98a224a3ab4d46e9bdca3abbd64f618bb5e00ac69c

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:Agenttesla_type2
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Agenttesla in memory
Reference:internal research
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:Nanocore
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Nanocore in memory
Reference:internal research
Rule name:Nanocore_RAT_Feb18_1
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:win_agent_tesla_w1
Create hunting rule
Author:govcert_ch
Description:Detect Agent Tesla based on common .NET code sequences
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.

  
Delivery method
Other
Cape
Cape
https://www.capesandbox.com/analysis/54029/

Comments