MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 bb58fcf9ccb7be9746f4c8193f6097475bb2d5a41483be4a88327ab79d8cdb2d. 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


PrivateLoader


Vendor detections: 11


Intelligence 11 IOCs YARA 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: bb58fcf9ccb7be9746f4c8193f6097475bb2d5a41483be4a88327ab79d8cdb2d
SHA3-384 hash: b8a0d9814b40e2f69c15a2102af6d3d6a0939fc0bea483c7dce4260a9fb5d50f056a3ca1d2610c3212fa66603b7615b1
SHA1 hash: 6cf9b668b4502890ced5f3b37020071666cd894e
MD5 hash: a93e930aaed5f847645ae758778e97a8
humanhash: purple-vermont-xray-mockingbird
File name:file
Download: download sample
Signature PrivateLoader
Create hunting rule
File size:4'486'144 bytes
First seen:2023-04-17 11:32:26 UTC
Last seen:2023-04-18 00:43:54 UTC
File type:Executable exe
MIME type:application/x-dosexec
ssdeep 98304:/52yqWwHOQMs4UbBGpEdSdRcvGxL+eso1GpZHnNzAJ0xra77m65:/SH/4UbBZIdOOlp6C
Threatray 563 similar samples on MalwareBazaar
TLSH T101262339AF75CA1AD9E007B4CE43EF13A2F6BC84FF52F2922784F56154B964429046E3
TrID 44.4% (.EXE) Win64 Executable (generic) (10523/12/4)
21.3% (.EXE) Win16 NE executable (generic) (5038/12/1)
8.7% (.ICL) Windows Icons Library (generic) (2059/9)
8.5% (.EXE) OS/2 Executable (generic) (2029/13)
8.4% (.EXE) Generic Win/DOS Executable (2002/3)
File icon (PE):PE icon
dhash icon 39f0e3e364242e4e (1 x PrivateLoader)
Reporter andretavare5
Tags:exe PrivateLoader


Avatar
andretavare5
Sample downloaded from https://vk.com/doc791620691_662374028?hash=zilkUHNl1gdGVwZrFzszg5YnseoBO48bbzXn84auJYw&dl=G44TCNRSGA3DSMI:1681720311:Pz1ziekSTay1ShwTc9zCtgWyLD4t0yO8eS6zZRBimyT&api=1&no_preview=1#crypto_kis_r

Intelligence

File Origin
# of uploads :
9
# of downloads :
238
Origin country :
US US
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
file
Verdict:
Malicious activity
Analysis date:
2023-04-17 11:34:13 UTC
Tags:
evasion risepro privateloader
Link:
https://app.any.run/tasks/523203e7-2818-4088-8d12-26905aff3e46

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/382758/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Launching a process
Creating a file
Creating a file in the %temp% subdirectories
DNS request
Sending a custom TCP request
Sending an HTTP GET request
Reading critical registry keys
Сreating synchronization primitives
Creating a process from a recently created file
Searching for synchronization primitives
Launching the default Windows debugger (dwwin.exe)
Searching for analyzing tools
Creating a file in the %AppData% subdirectories
Forced shutdown of a system process
Stealing user critical data
Unauthorized injection to a system process
Enabling autorun by creating a file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
packed packed
Link:
https://www.filescan.io/uploads/643d2e6f7a31c790ffdbb728/reports/39fee922-8a62-46ea-9272-5cf77ff48d16/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_90%
Link:
https://www.hybrid-analysis.com/sample/bb58fcf9ccb7be9746f4c8193f6097475bb2d5a41483be4a88327ab79d8cdb2d
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:
Suspicious
Link:
https://analyze.intezer.com/analyses/71a715f5-9d58-4544-b767-348b2ca297cf
Result
Threat name:
Clipboard Hijacker, PrivateLoader
Create hunting rule
Detection:
malicious
Classification:
rans.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1215103
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code references suspicious native API functions
Detected unpacking (changes PE section rights)
DLL side loading technique detected
Found potential ransomware demand text
Hides threads from debuggers
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)
May check the online IP address of the machine
Multi AV Scanner detection for dropped file
Overwrites code with unconditional jumps - possibly settings hooks in foreign process
Query firmware table information (likely to detect VMs)
Snort IDS alert for network traffic
Tries to detect sandboxes / dynamic malware analysis system (registry check)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect sandboxes and other dynamic analysis tools (window names)
Tries to detect virtualization through RDTSC time measurements
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Uses schtasks.exe or at.exe to add and modify task schedules
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected Clipboard Hijacker
Yara detected PrivateLoader
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 848031 Sample: file.exe Startdate: 17/04/2023 Architecture: WINDOWS Score: 100 64 Snort IDS alert for network traffic 2->64 66 Malicious sample detected (through community Yara rule) 2->66 68 Multi AV Scanner detection for dropped file 2->68 70 10 other signatures 2->70 9 file.exe 3 2->9         started        13 oobeldr.exe 2->13         started        process3 file4 46 C:\Users\user\AppData\Local\...\file.exe.log, CSV 9->46 dropped 72 Writes to foreign memory regions 9->72 74 Injects a PE file into a foreign processes 9->74 15 jsc.exe 42 9->15         started        20 AppLaunch.exe 9->20         started        22 ngentask.exe 9->22         started        26 20 other processes 9->26 76 Multi AV Scanner detection for dropped file 13->76 78 Detected unpacking (changes PE section rights) 13->78 80 Overwrites code with unconditional jumps - possibly settings hooks in foreign process 13->80 82 6 other signatures 13->82 24 schtasks.exe 1 13->24         started        signatures5 process6 dnsIp7 50 ipinfo.io 34.117.59.81, 443, 49697 GOOGLE-AS-APGoogleAsiaPacificPteLtdSG United States 15->50 52 cdn.discordapp.com 162.159.133.233, 443, 49703, 49704 CLOUDFLARENETUS United States 15->52 54 3 other IPs or domains 15->54 38 C:\Users\user\AppData\Local\...\softokn3.dll, PE32 15->38 dropped 40 C:\Users\user\AppData\Local\Temp\...\nss3.dll, PE32 15->40 dropped 42 C:\Users\user\AppData\Local\...\mozglue.dll, PE32 15->42 dropped 44 3 other malicious files 15->44 dropped 56 May check the online IP address of the machine 15->56 58 Tries to steal Mail credentials (via file / registry access) 15->58 60 Tries to harvest and steal browser information (history, passwords, etc) 15->60 62 DLL side loading technique detected 15->62 28 6lLWUw7hHOmHjd1gxhPw.exe 1 15->28         started        32 conhost.exe 24->32         started        file8 signatures9 process10 file11 48 C:\Users\user\AppData\Roaming\...\oobeldr.exe, MS-DOS 28->48 dropped 84 Multi AV Scanner detection for dropped file 28->84 86 Detected unpacking (changes PE section rights) 28->86 88 Overwrites code with unconditional jumps - possibly settings hooks in foreign process 28->88 90 6 other signatures 28->90 34 schtasks.exe 1 28->34         started        signatures12 process13 process14 36 conhost.exe 34->36         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/bb58fcf9ccb7be9746f4c8193f6097475bb2d5a41483be4a88327ab79d8cdb2d/
Threat name:
Win64.Trojan.PrivateLoader
Create hunting rule
Status:
Malicious
First seen:
2023-04-17 11:33:23 UTC
File Type:
PE+ (.Net Exe)
Extracted files:
17
AV detection:
17 of 24 (70.83%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=xnmpz6omw67jorxuzamt6yexi5n3fvnecsb34suigj5lphmm3mwq._file
Verdict:
unknown
Similar samples:
0eebf99a370bae273ce4afb5cd4e361239c53bef88fc345220cdf6960d2c491f
PrivateLoader
8e52ec55f770b443affcfb668d3ac3f904426b94635f6a16e0fd73c1d7323af9
PrivateLoader
94460b842742dd0e8e82ad68a72316827ba3ba9bcb3aed88b90e27163691d86d
PrivateLoader
ea9340574989e4082b2056d8eee9c80c35bdff64c2609dd2e4c7311d5bbab698
PrivateLoader
eb72000e35c1a8311dd6b4d7d61b432663d99e6ce5b71372d3a695047b1c61e6
PrivateLoader
ec61151d430b004c7c3a724aef6a79c8cc1c0b7c8cef4961d24af0a2f40dd783
PrivateLoader
f07483b6c09732c8d5e094bd2e2b405477ddbf8e220c12bd7982bc132cf44a04
PrivateLoader
fec6af49d1a7c7b4bf3af5e663b80ff142788e7d79b312a2180ec7b8b89f18d9
PrivateLoader
+ 553 additional samples on MalwareBazaar
Result
Malware family:
privateloader
Create hunting rule
Score:
  10/10
Tags:
family:privateloader evasion loader trojan
Link:
https://tria.ge/reports/230417-nnvp2afe8y/
Behaviour
Checks processor information in registry
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Program crash
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Checks whether UAC is enabled
Looks up external IP address via web service
.NET Reactor proctector
Checks BIOS information in registry
Executes dropped EXE
Loads dropped DLL
Downloads MZ/PE file
Identifies VirtualBox via ACPI registry values (likely anti-VM)
PrivateLoader
Unpacked files
SH256 hash:
bb58fcf9ccb7be9746f4c8193f6097475bb2d5a41483be4a88327ab79d8cdb2d
MD5 hash:
a93e930aaed5f847645ae758778e97a8
SHA1 hash:
6cf9b668b4502890ced5f3b37020071666cd894e
Link:
https://www.unpac.me/results/6328405e-5b02-46bd-839e-e74f8c371bc3/
Malware family:
PrivateLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/bb58fcf9ccb7/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/bb58fcf9ccb7be9746f4c8193f6097475bb2d5a41483be4a88327ab79d8cdb2d

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_EXE_Packed_DotNetReactor
Create hunting rule
Author:ditekSHen
Description:Detects executables packed with unregistered version of .NET Reactor

File information

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

  
Dropped by
PrivateLoader
  
Delivery method
Distributed via drive-by
Cape
Cape
https://www.capesandbox.com/analysis/382758/

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