MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 d900c100ca4cdec50c72b681421a5d727ed17513739c673c84020608b134ff8b. 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 4 File information Comments
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SHA256 hash: d900c100ca4cdec50c72b681421a5d727ed17513739c673c84020608b134ff8b
SHA3-384 hash: 7fd5d3b9f65766b0801806bc0c093de7e5a9252abb910c6a8c9ecdd55ba49087d4ec4f2fdc7aa75917a9a52912f26fbf
SHA1 hash: 6ed4b2b3c9c64d28d23d47bae93c0989a9cb005b
MD5 hash: d7f5be32c53be0e3718f372021ae5578
humanhash: maryland-emma-louisiana-lima
File name:DRAFT BL.exe
Download: download sample
Signature NanoCore
Create hunting rule
File size:33'792 bytes
First seen:2022-02-28 16:51:04 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 384:rdOizWxdc+srlHE3/Afi7B02PZpBvgOeHItoUtPx+0z:EizHRBHEvAfS/PZp92fOp+A
Threatray 4'342 similar samples on MalwareBazaar
TLSH T123E22AC6B7898369FCEB163049339F000317FE177891661969D5BA0B3F73242A8BB51B
File icon (PE):PE icon
dhash icon e0e4a3a6a4b8b8a8 (37 x Formbook, 9 x AZORult, 9 x Loki)
Reporter GovCERT_CH
Tags:exe NanoCore

Intelligence

File Origin
# of uploads :
1
# of downloads :
264
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/245402/
Detection(s):
SecuriteInfo.com.Trojan.Downloader.10124.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Сreating synchronization primitives
DNS request
Sending a custom TCP request
Launching a process
Creating a window
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
greyware obfuscated packed shell32.dll strictor update.exe
Link:
https://www.filescan.io/uploads/621cfd92b94fb38cb4261cc1/reports/01e4ad0c-1989-4242-9942-59842f1f84e9/overview
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.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/c92afa09-0aa8-4684-8392-9df472c2e836
Result
Threat name:
Nanocore
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/947556
Signature
.NET source code contains potential unpacker
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)
Icon mismatch, binary includes an icon from a different legit application in order to fool users
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Sigma detected: Bad Opsec Defaults Sacrificial Processes With Improper Arguments
Sigma detected: NanoCore
Sigma detected: Suspicious Add Scheduled Task From User AppData Temp
Sigma detected: Suspicius Schtasks From Env Var Folder
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected Nanocore RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 580037 Sample: DRAFT BL.exe Startdate: 28/02/2022 Architecture: WINDOWS Score: 100 55 Found malware configuration 2->55 57 Malicious sample detected (through community Yara rule) 2->57 59 Icon mismatch, binary includes an icon from a different legit application in order to fool users 2->59 61 9 other signatures 2->61 8 DRAFT BL.exe 15 3 2->8         started        12 RegAsm.exe 2 2->12         started        14 dhcpmon.exe 2 2->14         started        16 dhcpmon.exe 1 2->16         started        process3 dnsIp4 49 172.217.168.14 GOOGLEUS United States 8->49 51 8.8.8.8 GOOGLEUS United States 8->51 53 162.159.133.233 CLOUDFLARENETUS United States 8->53 43 C:\Users\user\AppData\...\DRAFT BL.exe.log, ASCII 8->43 dropped 18 RegAsm.exe 1 13 8->18         started        45 C:\Users\user\AppData\...\RegAsm.exe.log, ASCII 12->45 dropped 23 conhost.exe 12->23         started        25 conhost.exe 14->25         started        27 conhost.exe 16->27         started        file5 process6 dnsIp7 47 194.31.98.223 BURSABILTR Netherlands 18->47 37 C:\Users\user\AppData\Roaming\...\run.dat, PDP-11 18->37 dropped 39 C:\Users\user\AppData\Local\...\tmpF1C7.tmp, XML 18->39 dropped 41 C:\Program Files (x86)\...\dhcpmon.exe, PE32 18->41 dropped 63 Uses schtasks.exe or at.exe to add and modify task schedules 18->63 65 Hides that the sample has been downloaded from the Internet (zone.identifier) 18->65 29 schtasks.exe 1 18->29         started        31 schtasks.exe 1 18->31         started        file8 signatures9 process10 process11 33 conhost.exe 29->33         started        35 conhost.exe 31->35         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/d900c100ca4cdec50c72b681421a5d727ed17513739c673c84020608b134ff8b/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-02-27 21:57:31 UTC
File Type:
PE (.Net Exe)
Extracted files:
18
AV detection:
21 of 28 (75.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=3eamcagkjtpmkddsw2auegs5oj7nc5itooogopeeaidarmju76fq._file
Verdict:
malicious
Label(s):
nanocorerat
Create hunting rule
Similar samples:
0b1396805e736275f16550f3ecc5361cfcccc468094b4ea910ded8eaf430a5b3
NanoCore
263565e9f77b5ee48474855d471315dd56d1bcabe4d037fb380d404b3afcd14e
NanoCore
42d9b223bd595579d838b2a890386ad150b10ede5d57e33bc06f69be41f6b0bf
NanoCore
8176adc9a62eea37254cf916522ec5c140bc85fb368155c8cbe3788864d9c395
NanoCore
862965d573744607a29489905cfc8abdd8f187874d476ef4263eee7e5175630a
NanoCore
8bf0518cd0c607aa51073dfe422f6af43ab8b43523bd0c182cc6172c9ecb9072
NanoCore
8de953938b8fb2d222892012da5758cefe50de064f61416c2bc2c6e6f019352c
NanoCore
a30622ef748dbcae11f6a12cf32c096527e55364b32ae546ea1b729c121128ee
NanoCore
adac602d329a95580921b519350a4eefa10c98f593b6be76855b31d8bea64909
NanoCore
+ 4'332 additional samples on MalwareBazaar
Result
Malware family:
nanocore
Create hunting rule
Score:
  10/10
Tags:
family:nanocore evasion keylogger persistence spyware stealer trojan
Link:
https://tria.ge/reports/220228-vdd3vseff6/
Behaviour
Creates scheduled task(s)
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
NanoCore
Malware Config
C2 Extraction:
ericdonovan07.ddns.net:5121
Unpacked files
SH256 hash:
d900c100ca4cdec50c72b681421a5d727ed17513739c673c84020608b134ff8b
MD5 hash:
d7f5be32c53be0e3718f372021ae5578
SHA1 hash:
6ed4b2b3c9c64d28d23d47bae93c0989a9cb005b
Link:
https://www.unpac.me/results/478cdc62-6eab-4b80-bbcd-d75b7d815e62/
Malware family:
NanoCore
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/d900c100ca4c/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.35
Link:
https://yomi.yoroi.company/submissions/d900c100ca4cdec50c72b681421a5d727ed17513739c673c84020608b134ff8b

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:INDICATOR_SUSPICIOUS_EXE_DiscordURL
Create hunting rule
Author:ditekSHen
Description:Detects executables Discord URL observed in first stage droppers
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:SUSP_PE_Discord_Attachment_Oct21_1
Create hunting rule
Author:Florian Roth
Description:Detects suspicious executable with reference to a Discord attachment (often used for malware hosting on a legitimate FQDN)
Reference:Internal Research

File information

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

Malspam

NanoCore

Executable exe d900c100ca4cdec50c72b681421a5d727ed17513739c673c84020608b134ff8b

(this sample)

  
Dropped by
nanocore
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/245402/

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