MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 35975410919029f5c15ea420be97c10c327b94a2aa9e9b044e15660aede8c509. 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: 7


Intelligence 7 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 35975410919029f5c15ea420be97c10c327b94a2aa9e9b044e15660aede8c509
SHA3-384 hash: 7d1fb2de6dc0736d8906373227fcea35be03d9cd9a4a134bba9d323ca8ccca34147a518077a15414f930070896bf9441
SHA1 hash: ef2d8a88719ed23199afb29efe64029232343906
MD5 hash: 2604a4efa854fc6f81cfd215f7164903
humanhash: eight-zulu-steak-zebra
File name:PREVIOUS INVOICE.exe
Download: download sample
Signature NanoCore
Create hunting rule
File size:1'465'344 bytes
First seen:2020-10-22 06:51:05 UTC
Last seen:2020-10-23 09:33:50 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'657 x AgentTesla, 19'468 x Formbook, 12'206 x SnakeKeylogger)
ssdeep 24576:fjy9iyqAYnyDyN8/uQlMTm5KFYROxN9uEbuq2wlm2QryO8JqXzsQp/oz072CXH:by9iyveYuoysKFY0tbuq2wlPQrt8Jqjn
Threatray 38 similar samples on MalwareBazaar
TLSH 22657D1C2256CBA0DF954BF180373CCB0161EE63D63DA216FA6839DD8579F9016AEF42
Reporter abuse_ch
Tags:exe NanoCore RAT


Avatar
abuse_ch
Malspam distributing NanoCore:

HELO: [131.153.18.91]
Sending IP: 131.153.18.91
From: yuswan@pertamajaya.com
Subject: RE: PREVIOUS INVOICE
Attachment: PREVIOUS INVOICE.lzh (contains "PREVIOUS INVOICE.exe")

Intelligence

File Origin
# of uploads :
5
# of downloads :
100
Origin country :
n/a
Vendor Threat Intelligence
Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Creating a file in the %temp% directory
Creating a process from a recently created file
Running batch commands
Creating a process with a hidden window
Launching a process
Creating a file in the %AppData% subdirectories
Creating a window
Unauthorized injection to a recently created process by context flags manipulation
Enabling autorun
Result
Threat name:
Unknown
Detection:
malicious
Classification:
evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/506692
Signature
Allocates memory in foreign processes
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Creates an undocumented autostart registry key
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
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Writes to foreign memory regions
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 302521 Sample: PREVIOUS INVOICE.exe Startdate: 22/10/2020 Architecture: WINDOWS Score: 100 47 Antivirus detection for dropped file 2->47 49 Antivirus / Scanner detection for submitted sample 2->49 51 Multi AV Scanner detection for dropped file 2->51 53 5 other signatures 2->53 7 PREVIOUS INVOICE.exe 11 2->7         started        process3 file4 35 C:\Users\user\AppData\Local\Temp\svhost.exe, PE32 7->35 dropped 37 C:\Users\user\AppData\...\Micosoft.exe.lnk, MS 7->37 dropped 39 C:\Users\user\AppData\...\Micosoft.exe.bat, ASCII 7->39 dropped 41 C:\Users\user\...\PREVIOUS INVOICE.exe.log, ASCII 7->41 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 cmd.exe 1 7->11         started        13 cmd.exe 3 7->13         started        16 cmd.exe 1 7->16         started        18 3 other processes 7->18 signatures5 process6 file7 20 reg.exe 1 1 11->20         started        23 conhost.exe 11->23         started        43 C:\Users\user\AppData\...\Micosoft.exe, PE32 13->43 dropped 25 conhost.exe 13->25         started        45 C:\Users\...\Micosoft.exe:Zone.Identifier, ASCII 16->45 dropped 27 conhost.exe 16->27         started        29 conhost.exe 18->29         started        31 conhost.exe 18->31         started        33 timeout.exe 1 18->33         started        process8 signatures9 55 Creates an undocumented autostart registry key 20->55
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/35975410919029f5c15ea420be97c10c327b94a2aa9e9b044e15660aede8c509/
Threat name:
ByteCode-MSIL.Backdoor.NanoCore
Create hunting rule
Status:
Malicious
First seen:
2020-10-22 02:19:24 UTC
AV detection:
22 of 29 (75.86%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=gwlvieersau7lqk6uqql5f6bbqzhxffcvkpjwbcocvtav3piyueq._file
Verdict:
malicious
Similar samples:
0d2cf62b947967dcece71936fe76d44d03d97f11c6ec580c67f33761a99ef708
NanoCore
1167a7d5a6192107c841eee3d1292914e2ddbe6b661f2c2c41f1c1977ac97372
NanoCore
3528262d84ec15b8f88df39fe817d32a773274d53541ceee13c983c81b15fcf6
NanoCore
3c8d5a42b3b1e9ec4c489d8ec98ba60d6d107e62b2d1a2cc43570840374ff05f
NanoCore
54e9e8ac005eba3cd288eac02d69cb77b8b419b5bf00da41f175d40aec919717
NanoCore
55416c27dc034735dba35002a4c206b05ab35bc197a56584d2ddba5dad588633
NanoCore
78be18a8bdab5baf14aa5c195ce9f5636750cd4fee2d3bbc3528f4ed8f9ad9ee
NanoCore
8246f2b18a1592cc2a37c001e2415412f5e63d14220324ae8356981e25a4ba76
NanoCore
ac2a1a0b8560a6c0305e4d8e4fba8221974f011c5b52a5adec277268d4715f69
NanoCore
ea49f722d6874e9b0b754f8116edceee6cdf4b85aa893d1b86053bfc506e5602
NanoCore
+ 28 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  8/10
Tags:
n/a
Link:
https://tria.ge/reports/201022-2jsjd9t9aj/
Behaviour
Delays execution with timeout.exe
NTFS ADS
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Loads dropped DLL
Executes dropped EXE
Unpacked files
SH256 hash:
35975410919029f5c15ea420be97c10c327b94a2aa9e9b044e15660aede8c509
MD5 hash:
2604a4efa854fc6f81cfd215f7164903
SHA1 hash:
ef2d8a88719ed23199afb29efe64029232343906
Link:
https://www.unpac.me/results/9516583a-6c15-4e7a-ad75-36ccef85d1e9/
SH256 hash:
57f263dbd0203860a31c4b2231375e77e447f89277413582ee5de07a49942055
MD5 hash:
f7231dca052063cf269d31a7b255174e
SHA1 hash:
c1825853f5ec3d7928c581ce70696f77a99f6112
Detections:
win_webmonitor_w0
Create hunting rule
Link:
https://www.unpac.me/results/9516583a-6c15-4e7a-ad75-36ccef85d1e9/
Parent samples :
ea49f722d6874e9b0b754f8116edceee6cdf4b85aa893d1b86053bfc506e5602
78be18a8bdab5baf14aa5c195ce9f5636750cd4fee2d3bbc3528f4ed8f9ad9ee
1167a7d5a6192107c841eee3d1292914e2ddbe6b661f2c2c41f1c1977ac97372
35975410919029f5c15ea420be97c10c327b94a2aa9e9b044e15660aede8c509
fe2f20398cff7bea0e10e10940e0936e2525ba8dba51263387f1b1d82d8b1aea
b426493d22cf9ad03bb8958bb2d994119dd6fb014c23855775dd7a9660bb51a9
4dec812952bd5e2e6ee08fec35c3d78887feaf0269cf4f624b965b5f8c481652
4a2d48d163b550561583e4e5811dc43cb67045e7a9816c30fb8fde4af8dd06d5
15003064a4b6d326954815712d6468af76d413335470092fbd820b02745d3e02
6095dd10965d4e081e87c366736e0305b7d42f84dbdb10471bcedacfe145f7a5
84d9088f856e12f998ce324510f185b9e6939c8d1cb2cdb46eb9b38baf879619
7696274f6270b793b2dffc5b283a104be475d79b440500478780e24f6436fd5a
0ed8f93b98f9cfff89559df9e0a8d360cab3dde1abfa2992216b4a98c5ca1253
d6593053bda046cd96e0e5e508e0f57622c464738838b84984e35e683d46c414
Please 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:Keylog_bin_mem
Create hunting rule
Author:James_inthe_box
Description:Contains Keylog
Rule name:Select_from_enumeration
Create hunting rule
Author:James_inthe_box
Description:IP and port combo
Rule name:win_webmonitor_w0
Create hunting rule
Author:James_inthe_box
Description:Revcode RAT
Reference:ee1b9659f2193896ce3469b5f90b82af3caffcba428e8524be5a9fdf391d8dd8

File information

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

Malspam

NanoCore

rar 31a5fdd2b55be2d1790a5b1e5a26dccc79ea0ccb5274996db59daba85cf53b6a

NanoCore

Executable exe 35975410919029f5c15ea420be97c10c327b94a2aa9e9b044e15660aede8c509

(this sample)

  
Dropped by
MD5 19478356b7135bb952fa3e0db3133a3c
  
Delivery method
Distributed via e-mail attachment
  
Dropped by
SHA256 31a5fdd2b55be2d1790a5b1e5a26dccc79ea0ccb5274996db59daba85cf53b6a

Comments