MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c35f5536d8732a6b5a06362d550ddfee4e79a778e63317a09179e4e5704b37ab. 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 5 File information Comments
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SHA256 hash: c35f5536d8732a6b5a06362d550ddfee4e79a778e63317a09179e4e5704b37ab
SHA3-384 hash: e5f7dfc33e04084a4ca9aa851045b1a2ba6b6a735cfe695460f1fcc8168fc30c4ae79460624e3db87ed9d6ac1c22d51f
SHA1 hash: 95c331d0d4c9ae0ce6d49fc663475b91b26c0dc7
MD5 hash: 6cb5a75ca50a72df1ba12b130a036e5f
humanhash: beryllium-cup-mike-foxtrot
File name:Asif Professional CV.exe
Download: download sample
Signature NanoCore
Create hunting rule
File size:44'544 bytes
First seen:2022-03-11 13:08:58 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'649 x AgentTesla, 19'454 x Formbook, 12'202 x SnakeKeylogger)
ssdeep 768:iPRhHbGRVsNXwaXz769FHpvAfu/QZp92vOp9E:i/UViXwi4vVST2v5
Threatray 4'330 similar samples on MalwareBazaar
TLSH T147134A82F24D8264DCB6463AD477FE0007D7FE16B872C5197986B74B2E73342E91A60B
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 :
226
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/249430/
Detection(s):
SecuriteInfo.com.Trojan.Downloader.10124.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Сreating synchronization primitives
DNS request
Sending a custom TCP request
Creating a file
Launching a process
Creating a file in the %AppData% subdirectories
Creating a file in the Program Files subdirectories
Creating a file in the %temp% directory
Forced shutdown of a system process
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Enabling autorun
Unauthorized injection to a system process
Enabling autorun by creating a file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
obfuscated packed strictor
Link:
https://www.filescan.io/uploads/622b49f0dfdfa8501c8bddef/reports/dd489874-5d97-4e0a-9cea-dae85807ac1a/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/a298aeda-b984-4983-a5ea-eb8497a46453
Result
Threat name:
Nanocore
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/954875
Signature
.NET source code contains potential unpacker
C2 URLs / IPs found in malware configuration
Creates an undocumented autostart registry key
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
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 domain / URL
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
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 Costura Assembly Loader
Yara detected MSILDownloaderGeneric
Yara detected Nanocore RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 587356 Sample: Asif Professional CV.exe Startdate: 11/03/2022 Architecture: WINDOWS Score: 100 51 papakamzy.ddns.net 2->51 57 Multi AV Scanner detection for domain / URL 2->57 59 Found malware configuration 2->59 61 Malicious sample detected (through community Yara rule) 2->61 63 16 other signatures 2->63 9 Asif Professional CV.exe 16 6 2->9         started        14 RegAsm.exe 2 2->14         started        16 dhcpmon.exe 2 2->16         started        18 dhcpmon.exe 1 2->18         started        signatures3 process4 dnsIp5 55 cdn.discordapp.com 162.159.135.233, 443, 49764 CLOUDFLARENETUS United States 9->55 45 C:\Users\user\AppData\Local\bin\bin.exe, PE32 9->45 dropped 47 C:\Users\user\...\bin.exe:Zone.Identifier, ASCII 9->47 dropped 49 C:\Users\...\Asif Professional CV.exe.log, ASCII 9->49 dropped 69 Creates an undocumented autostart registry key 9->69 71 Writes to foreign memory regions 9->71 73 Injects a PE file into a foreign processes 9->73 20 RegAsm.exe 1 11 9->20         started        25 conhost.exe 14->25         started        27 conhost.exe 16->27         started        29 conhost.exe 18->29         started        file6 signatures7 process8 dnsIp9 53 papakamzy.ddns.net 188.241.80.26, 49781, 49783, 49784 SAFEGRIDRO Romania 20->53 39 C:\Users\user\AppData\Roaming\...\run.dat, data 20->39 dropped 41 C:\Users\user\AppData\Local\...\tmpF511.tmp, XML 20->41 dropped 43 C:\Program Files (x86)\...\dhcpmon.exe, PE32 20->43 dropped 65 Uses schtasks.exe or at.exe to add and modify task schedules 20->65 67 Hides that the sample has been downloaded from the Internet (zone.identifier) 20->67 31 schtasks.exe 1 20->31         started        33 schtasks.exe 1 20->33         started        file10 signatures11 process12 process13 35 conhost.exe 31->35         started        37 conhost.exe 33->37         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/c35f5536d8732a6b5a06362d550ddfee4e79a778e63317a09179e4e5704b37ab/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-03-11 13:09:09 UTC
File Type:
PE (.Net Exe)
Extracted files:
18
AV detection:
23 of 27 (85.19%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ynpvknwyomvgwwqggywvkdo75zhhtj3y4yzrpierphsok4clg6vq._file
Verdict:
malicious
Label(s):
nanocorerat
Create hunting rule
Similar samples:
239ec3bfd566b2e7c09a16c28997aac2ddaad1c717baa23b2f22e5e212ac9c00
NanoCore
462757689ac3c1498cfc5160eb8e160c27668ab5b9a8546af645d522e93e21c0
NanoCore
48adb6d06f1851c1febdf05eb2691b5ea68d6d47a08c67045ccbde8760c5680e
NanoCore
8141fae70ffd2918e015e5626af46b24706075a22900abe9c3e9ee753c892f96
NanoCore
a4717412162c3a9b74997841c66cb913771279323f6e5829b6e42b0970499e08
NanoCore
+ 4'320 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/220311-qdrxhahed2/
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
Modifies WinLogon for persistence
NanoCore
Malware Config
C2 Extraction:
papakamzy.ddns.net:7600
Unpacked files
SH256 hash:
c35f5536d8732a6b5a06362d550ddfee4e79a778e63317a09179e4e5704b37ab
MD5 hash:
6cb5a75ca50a72df1ba12b130a036e5f
SHA1 hash:
95c331d0d4c9ae0ce6d49fc663475b91b26c0dc7
Link:
https://www.unpac.me/results/024f3767-c9d3-4b04-8c49-af17081b3ec9/
Malware family:
NanoCore
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/c35f5536d873/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/c35f5536d8732a6b5a06362d550ddfee4e79a778e63317a09179e4e5704b37ab

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
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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_Discord_Attachments_URL
Create hunting rule
Author:SECUINFRA Falcon Team
Description:Detects a PE file that contains an Discord Attachments URL. This is often used by Malware to download further payloads
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 c35f5536d8732a6b5a06362d550ddfee4e79a778e63317a09179e4e5704b37ab

(this sample)

  
Dropped by
nanocore
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/249430/

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