MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3dfc4c40e95c69c2f87baf8ce364a350823404e78bb4ed97807330f398753f76. 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 1 File information Comments
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SHA256 hash: 3dfc4c40e95c69c2f87baf8ce364a350823404e78bb4ed97807330f398753f76
SHA3-384 hash: f1de4b6a99062cd6504cddf09473b78a6ae3272d2f5811e6d7a03728a4e41f6488a0e4b3f881dd2f6e534c68273a04fc
SHA1 hash: 81adf63b98379e81b82925ccc64c7a219b81a7fd
MD5 hash: b3e24269e8f4d613dab013ba26e08f8a
humanhash: stairway-steak-bacon-mountain
File name:FedEx's AWB#5305323204643.exe
Download: download sample
Signature NanoCore
Create hunting rule
File size:20'704 bytes
First seen:2021-02-26 06:54:24 UTC
Last seen:2021-02-26 14:09:26 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'609 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 384:jeRDypgW51V3I22IGFrtmIbQ+TVUkuqphVd:6lyp7V72aIbnTYQhL
Threatray 1'670 similar samples on MalwareBazaar
TLSH AB927D071EA7181DE59B863C64D38A1DEA30B3C2E560C22B10ECB148DBCF755256DE7A
Reporter abuse_ch
Tags:exe FedEx NanoCore


Avatar
abuse_ch
Malspam distributing unidentified malware:

From: FedEx <track@fedex.com>
Subject: FedEx's AWB#5305323204643 - Information is required
Attachment: FedExs AWB5305323204643.iso (contains "FedEx's AWB#5305323204643.exe")

Intelligence

File Origin
# of uploads :
3
# of downloads :
159
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
FedEx's AWB#5305323204643.exe
Verdict:
Malicious activity
Analysis date:
2021-02-26 07:01:30 UTC
Tags:
rat nanocore
Link:
https://app.any.run/tasks/7c60bba2-a0f6-45fa-883e-9916a28c70d7

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Trojan.GenericKD.45793229.11925.17594.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a custom TCP request
DNS request
Sending a UDP request
Launching a process
Creating a process with a hidden window
Creating a window
Launching a service
Deleting a recently created file
Running batch commands
Adding an access-denied ACE
Launching the default Windows debugger (dwwin.exe)
Creating a process from a recently created file
Setting a single autorun event
Creating a file in the Windows subdirectories
Creating a file in the %temp% subdirectories
Forced shutdown of a system process
Sending an HTTP GET request to an infection source
Adding exclusions to Windows Defender
Unauthorized injection to a system process
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.
Result
Threat name:
NanoCore
Create hunting rule
Detection:
malicious
Classification:
evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/619439
Signature
Adds a directory exclusion to Windows Defender
Binary contains a suspicious time stamp
Changes security center settings (notifications, updates, antivirus, firewall)
Creates an autostart registry key pointing to binary in C:\Windows
Drops executables to the windows directory (C:\Windows) and starts them
Drops PE files with benign system names
Hides that the sample has been downloaded from the Internet (zone.identifier)
Hides threads from debuggers
Injects a PE file into a foreign processes
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: NanoCore
Sigma detected: Suspicious Svchost Process
Sigma detected: System File Execution Location Anomaly
System process connects to network (likely due to code injection or exploit)
Writes to foreign memory regions
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 358715 Sample: FedEx's AWB#5305323204643.exe Startdate: 26/02/2021 Architecture: WINDOWS Score: 100 58 annapro.linkpc.net 2->58 74 Multi AV Scanner detection for submitted file 2->74 76 Sigma detected: NanoCore 2->76 78 Binary contains a suspicious time stamp 2->78 80 4 other signatures 2->80 8 FedEx's AWB#5305323204643.exe 23 9 2->8         started        13 explorer.exe 2->13         started        15 explorer.exe 2->15         started        17 12 other processes 2->17 signatures3 process4 dnsIp5 70 coroloboxorozor.com 172.67.172.17, 49705, 80 CLOUDFLARENETUS United States 8->70 52 C:\Windows\Resources\Themes\...\svchost.exe, PE32 8->52 dropped 54 C:\Windows\...\svchost.exe:Zone.Identifier, ASCII 8->54 dropped 56 C:\Users\user\AppData\...\AdvancedRun.exe, PE32 8->56 dropped 88 Creates an autostart registry key pointing to binary in C:\Windows 8->88 90 Writes to foreign memory regions 8->90 92 Adds a directory exclusion to Windows Defender 8->92 98 2 other signatures 8->98 19 InstallUtil.exe 8->19         started        24 AdvancedRun.exe 1 8->24         started        26 cmd.exe 8->26         started        36 3 other processes 8->36 94 Drops executables to the windows directory (C:\Windows) and starts them 13->94 28 svchost.exe 13->28         started        30 svchost.exe 15->30         started        72 127.0.0.1 unknown unknown 17->72 96 Changes security center settings (notifications, updates, antivirus, firewall) 17->96 32 WerFault.exe 17->32         started        34 MpCmdRun.exe 17->34         started        file6 signatures7 process8 dnsIp9 60 185.157.160.233, 2212 OBE-EUROPEObenetworkEuropeSE Sweden 19->60 48 C:\Users\user\AppData\Roaming\...\run.dat, data 19->48 dropped 82 Hides that the sample has been downloaded from the Internet (zone.identifier) 19->82 62 192.168.2.1 unknown unknown 24->62 38 AdvancedRun.exe 24->38         started        40 conhost.exe 26->40         started        42 timeout.exe 26->42         started        64 coroloboxorozor.com 28->64 50 C:\Users\user\AppData\...\AdvancedRun.exe, PE32 28->50 dropped 84 System process connects to network (likely due to code injection or exploit) 28->84 66 104.21.71.230, 49720, 49727, 80 CLOUDFLARENETUS United States 30->66 68 coroloboxorozor.com 30->68 86 Multi AV Scanner detection for dropped file 30->86 44 conhost.exe 36->44         started        46 conhost.exe 36->46         started        file10 signatures11 process12
Detection:
nanocore
Create hunting rule
Link:
https://mwdb.cert.pl/sample/3dfc4c40e95c69c2f87baf8ce364a350823404e78bb4ed97807330f398753f76/
Threat name:
Win32.Trojan.Wacatac
Create hunting rule
Status:
Malicious
First seen:
2021-02-26 05:00:34 UTC
AV detection:
9 of 48 (18.75%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=hx6eyqhjlru4f6d3v6gogzfdkcbdibhhro2o3f4aomyphgdvh53a._file
Verdict:
malicious
Label(s):
nanocorerat
Create hunting rule
Similar samples:
15f0aac31d57cff82f66f71e05e8a186752b8d93ff94c0d1e7c88d11f0c0b55a
NanoCore
258856f05819789b47e0bed58b1df479976a355cd30b953b23f9e2f5d286578a
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2acf6c2398a12dc97ff2ceec4f348ed6338c4aafb2dcfeb24856cf8526d12a9d
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4f0035201ba7a3a536727862b8ac8dbf389038c5af1674ff7a982190fed1e30b
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644a0403a3c8254a3846b8c07aa7fdeb2cfe21aa5630ca3100949869f60ae407
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6a4ecef563225ed9892ff403374d704be5e3b4242ae9f08d624325e83fd22276
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db591a08743176655e567ddffcbbd79b9e2e31feadc1feb54a0200296a93d53d
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e26e07749118e8284c28e50553c62bdbe327234b801ffdf2eedb8663444aa459
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f3ac633354efc183e1705dd9e042d39b62208735f6f9e83534fb21c9f32b5d70
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f4bf592fde78af7ed0b06166ac8265d7b65a2457b9a61f12c2e3a4fad641ac19
NanoCore
+ 1'660 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/210226-jg9jlcq9m2/
Behaviour
Delays execution with timeout.exe
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
Drops file in Windows directory
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Adds Run key to start application
Loads dropped DLL
Windows security modification
Executes dropped EXE
Nirsoft
Modifies Windows Defender Real-time Protection settings
NanoCore
Turns off Windows Defender SpyNet reporting
Windows security bypass
Malware Config
C2 Extraction:
185.157.160.233:2212
annapro.linkpc.net:2212
Unpacked files
SH256 hash:
3dfc4c40e95c69c2f87baf8ce364a350823404e78bb4ed97807330f398753f76
MD5 hash:
b3e24269e8f4d613dab013ba26e08f8a
SHA1 hash:
81adf63b98379e81b82925ccc64c7a219b81a7fd
Link:
https://www.unpac.me/results/6380eb29-aa9f-426d-9e53-baa9ed1f5b45/
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:INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFu
Create hunting rule
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time

File information

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

Malspam

NanoCore

iso 640bb73cc2576884be85bb0018497e77fa684493fdda95a711f5936bab002b18

NanoCore

Executable exe 3dfc4c40e95c69c2f87baf8ce364a350823404e78bb4ed97807330f398753f76

(this sample)

  
Dropped by
MD5 b1db8c0feda71e7525b2fbe214243ec7
  
Delivery method
Distributed via e-mail attachment
  
Dropped by
SHA256 640bb73cc2576884be85bb0018497e77fa684493fdda95a711f5936bab002b18

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