MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ef83f00952dab1229b5943f9afde55837ef0d46d3dfe6b11063d85bbd4a1a8fe. 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: 9


Intelligence 9 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: ef83f00952dab1229b5943f9afde55837ef0d46d3dfe6b11063d85bbd4a1a8fe
SHA3-384 hash: 3c556fe4a5bccb76c68778894237dc1a739edc4a194dee429106c243417023cc0b1fb2de92f3308ea0013140d7e77b5c
SHA1 hash: 2262d8aa62f88fc7874f7ae91d4dbe414d345dd6
MD5 hash: f660105b981e29b734fa4e9d5baf9c19
humanhash: missouri-three-missouri-chicken
File name:Habib Bank_Payment MT103 Copy_Pdf.exe
Download: download sample
Signature NanoCore
Create hunting rule
File size:25'600 bytes
First seen:2022-05-09 14:07:46 UTC
Last seen:2022-05-09 14:54:37 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'742 x AgentTesla, 19'607 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 192:5m7Js7NmJ6He1lhWhzmACc+pJ6pYL4+EvNesGT+:5Is7NO6HUlhWRPFYsVvNesK
Threatray 250 similar samples on MalwareBazaar
TLSH T181B25301F2849371E3A2177778EDB14CF2AA9C2D061BAA9AF8503D5C1BB12D11EF653C
TrID 72.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.4% (.EXE) Win64 Executable (generic) (10523/12/4)
6.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.4% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.EXE) OS/2 Executable (generic) (2029/13)
File icon (PE):PE icon
dhash icon 64e4c8d0f0e8d4d4 (56 x AgentTesla, 7 x RemcosRAT, 5 x NanoCore)
Reporter abuse_ch
Tags:exe NanoCore

Intelligence

File Origin
# of uploads :
2
# of downloads :
252
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Habib Bank_Payment MT103 Copy_Pdf.exe
Verdict:
Suspicious activity
Analysis date:
2022-05-09 19:00:30 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/c978a6b5-41e6-4c73-9a20-642ec54492b3

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.W32.AIDetectNet.01.20847.7864.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
DNS request
Sending an HTTP GET request
Sending a custom TCP request
Running batch commands
Creating a process with a hidden window
Launching a process
Creating a file in the %temp% directory
Creating a process from a recently created file
Creating a file in the %AppData% subdirectories
Creating a file
Using the Windows Management Instrumentation requests
Creating a window
Reading critical registry keys
Unauthorized injection to a recently created process
Stealing user critical data
Enabling autorun by creating a file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/62792053bd5c76586e251cff/reports/173051a3-c669-4f96-bc8a-30cd20df1329/overview
Result
Verdict:
UNKNOWN
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/1db6d692-172c-4293-9102-6d233fe90ed8
Result
Threat name:
Nanocore, AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/990222
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Antivirus detection for dropped file
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Creates an undocumented autostart registry key
Detected Nanocore Rat
Executable has a suspicious name (potential lure to open the executable)
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
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
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for domain / URL
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)
Sigma detected: NanoCore
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Yara detected AgentTesla
Yara detected Nanocore RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 622719 Sample: Habib Bank_Payment MT103 Co... Startdate: 09/05/2022 Architecture: WINDOWS Score: 100 47 Multi AV Scanner detection for domain / URL 2->47 49 Found malware configuration 2->49 51 Malicious sample detected (through community Yara rule) 2->51 53 14 other signatures 2->53 7 Habib Bank_Payment MT103 Copy_Pdf.exe 15 8 2->7         started        process3 dnsIp4 35 bmn.lpmpbanten.id 103.8.79.204, 49711, 80 IDNIC-MTN-AS-IDPTMediatamaTelematikaNusantaraID Indonesia 7->35 27 C:\Users\user\AppData\...\kaspersky.exe, PE32 7->27 dropped 29 C:\Users\user\...\Wdxqbcukuitgbkwvpmdf1.exe, PE32 7->29 dropped 31 C:\Users\...\kaspersky.exe:Zone.Identifier, ASCII 7->31 dropped 33 Habib Bank_Payment...03 Copy_Pdf.exe.log, ASCII 7->33 dropped 55 Creates an undocumented autostart registry key 7->55 57 Injects a PE file into a foreign processes 7->57 12 Wdxqbcukuitgbkwvpmdf1.exe 2 7->12         started        16 Habib Bank_Payment MT103 Copy_Pdf.exe 7 7->16         started        19 cmd.exe 1 7->19         started        file5 signatures6 process7 dnsIp8 37 mail.elparque.com.uy 12->37 39 mx.mf.netgate.com.uy 200.40.119.50, 49753, 587 AdministracionNacionaldeTelecomunicacionesUY Uruguay 12->39 41 192.168.2.1 unknown unknown 12->41 59 Antivirus detection for dropped file 12->59 61 Multi AV Scanner detection for dropped file 12->61 63 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 12->63 67 4 other signatures 12->67 43 23.105.131.196, 49754, 49755, 49758 LEASEWEB-USA-NYC-11US United States 16->43 45 127.0.0.1 unknown unknown 16->45 25 C:\Users\user\AppData\Roaming\...\run.dat, data 16->25 dropped 65 Hides that the sample has been downloaded from the Internet (zone.identifier) 16->65 21 conhost.exe 19->21         started        23 timeout.exe 1 19->23         started        file9 signatures10 process11
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/ef83f00952dab1229b5943f9afde55837ef0d46d3dfe6b11063d85bbd4a1a8fe/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-05-09 04:48:59 UTC
File Type:
PE (.Net Exe)
Extracted files:
4
AV detection:
19 of 26 (73.08%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=56b7acks3kysfg2zip427xsvqn7pbvdnhx7gweighwc3xvfbvd7a._file
Verdict:
malicious
Similar samples:
16ab238a5b8fc0de74ddda698db8182e8193e65f7003124a0f954313cf86e048
NanoCore
1799e80fe0e05e3e784de5536df1713309a3b345ea3dbd920acfff477735afbd
NanoCore
29478db896444dc2bed1ae2346fcb41e505152127be5d1798851964210c264a7
NanoCore
347fa0ad9e11712fe0628c2454141d6fec8e995acbe7fe7461e6dbf94f2838ce
NanoCore
41534cbdad51e3ae39a1346396ff9706c1e24a27a8051f2bb4c92148edb741d8
NanoCore
4c9059aa76dfa2f817a4bf9cbf18e9f36d9235b6d6eb91af99c99eb68109afe5
NanoCore
618fd616284d3fe84cff8f2fd38ee1c4cae578b619d70a59fc7d7b34f8eb6710
NanoCore
+ 240 additional samples on MalwareBazaar
Result
Malware family:
nanocore
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla family:nanocore collection evasion keylogger spyware stealer suricata trojan
Link:
https://tria.ge/reports/220509-rflc6sgdal/
Behaviour
Delays execution with timeout.exe
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
outlook_office_path
outlook_win_path
Enumerates physical storage devices
Program crash
Suspicious use of SetThreadContext
Accesses Microsoft Outlook profiles
Checks whether UAC is enabled
Loads dropped DLL
Reads user/profile data of local email clients
Reads user/profile data of web browsers
Executes dropped EXE
AgentTesla
NanoCore
suricata: ET MALWARE AgentTesla Exfil Via SMTP
suricata: ET MALWARE Possible NanoCore C2 60B
Malware Config
C2 Extraction:
23.105.131.196:9070
127.0.0.1:9070
Unpacked files
SH256 hash:
ef83f00952dab1229b5943f9afde55837ef0d46d3dfe6b11063d85bbd4a1a8fe
MD5 hash:
f660105b981e29b734fa4e9d5baf9c19
SHA1 hash:
2262d8aa62f88fc7874f7ae91d4dbe414d345dd6
Link:
https://www.unpac.me/results/10a83ff6-13a3-4e4e-8ca8-8ad7cd85c306/
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/ef83f00952dab1229b5943f9afde55837ef0d46d3dfe6b11063d85bbd4a1a8fe

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:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

File information

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

Malspam

NanoCore

Executable exe ef83f00952dab1229b5943f9afde55837ef0d46d3dfe6b11063d85bbd4a1a8fe

(this sample)

  
Delivery method
Distributed via e-mail attachment

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