MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 2aaa4c723b5868576aa1be98426763d3c75b1255aa639516c46d5867d2e970a4. 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


GuLoader


Vendor detections: 10


Intelligence 10 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 2aaa4c723b5868576aa1be98426763d3c75b1255aa639516c46d5867d2e970a4
SHA3-384 hash: 088c84cb44ade4a1935084346ffe21501d64dff2efaf9f089eaaf73113795d4f5c94e7c5a81d20ce339fc8539a73ebd1
SHA1 hash: 59ca4788e45c59cc940a8833fcc1a5c4a393abf9
MD5 hash: cde989a6827ce732459b6d4d77488532
humanhash: twelve-leopard-monkey-lima
File name:file
Download: download sample
Signature GuLoader
Create hunting rule
File size:3'088'256 bytes
First seen:2023-11-15 18:52:35 UTC
Last seen:2023-11-15 23:45:38 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'663 x AgentTesla, 19'478 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 49152:dpszXGAAvkJDLvNrKwSTJZVaKLN46xtccDAoo5mJm/4:diyvkJ3vNuwyJZ/LN/xFDAooMJD
TLSH T1D0E55A40E2F1A20DE1EB8675AE70A2F4927378627B22D749CC58F119742E6D78EC1773
TrID 60.4% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.8% (.SCR) Windows screen saver (13097/50/3)
8.7% (.EXE) Win64 Executable (generic) (10523/12/4)
5.4% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.1% (.EXE) Win16 NE executable (generic) (5038/12/1)
Reporter andretavare5
Tags:exe GuLoader signed

Code Signing Certificate

Organisation:installcapital inc
Issuer:installcapital inc
Algorithm:sha256WithRSAEncryption
Valid from:2023-11-15T17:48:31Z
Valid to:2024-11-15T17:48:31Z
Serial number: 9e9cd292b7adc68558a82cd16ef86db8
Thumbprint Algorithm:SHA256
Thumbprint: 4235fec4156c2d248c1e8ab560ae1abc13a319ad73a9b913599515b3432df52d
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform


Avatar
andretavare5
Sample downloaded from http://91.92.243.139/files/InstallSetup2.exe

Intelligence

File Origin
# of uploads :
3
# of downloads :
357
Origin country :
US US
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/458769/
Detection(s):
SecuriteInfo.com.Trojan.MSIL.Crypt.6671.28822.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Сreating synchronization primitives
Creating a process with a hidden window
Launching a process
Creating a file
DNS request
Sending a custom TCP request
Connecting to a non-recommended domain
Sending an HTTP GET request
Creating a process from a recently created file
Creating a file in the %temp% subdirectories
Blocking the User Account Control
Forced shutdown of a system process
Adding exclusions to Windows Defender
Adding an exclusion to Microsoft Defender
Unauthorized injection to a system process
Enabling autorun by creating a file
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
anti-vm fingerprint lolbin msbuild msdeploy overlay packed remote replace
Link:
https://www.filescan.io/uploads/6555139053fe999002c2e167/reports/60507571-f0da-4def-8bb4-cf1965f8be3c/overview
Verdict:
Suspicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/2aaa4c723b5868576aa1be98426763d3c75b1255aa639516c46d5867d2e970a4
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:
Unknown
Link:
https://analyze.intezer.com/analyses/6aaa8e8d-60a0-478e-8210-cc378a5ebf6a
Result
Threat name:
Glupteba, Neoreklami, Vidar
Create hunting rule
Detection:
malicious
Classification:
rans.troj.adwa.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1343229
Signature
.NET source code contains potential unpacker
.NET source code contains process injector
.NET source code references suspicious native API functions
Adds a directory exclusion to Windows Defender
Adds extensions / path to Windows Defender exclusion list
Allocates memory in foreign processes
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contain functionality to detect virtual machines
Creates HTML files with .exe extension (expired dropper behavior)
Detected unpacking (changes PE section rights)
Detected unpacking (overwrites its own PE header)
Disables UAC (registry)
Drops script or batch files to the startup folder
Found malware configuration
Found Tor onion address
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Malicious sample detected (through community Yara rule)
Modifies Group Policy settings
Modifies Windows Defender protection settings
Multi AV Scanner detection for dropped file
Sample uses string decryption to hide its real strings
Sigma detected: Drops script at startup location
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to harvest and steal ftp login credentials
Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Writes many files with high entropy
Writes to foreign memory regions
Yara detected Generic Downloader
Yara detected Glupteba
Yara detected Neoreklami
Yara detected Vidar stealer
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1343229 Sample: file.exe Startdate: 15/11/2023 Architecture: WINDOWS Score: 100 122 Found malware configuration 2->122 124 Malicious sample detected (through community Yara rule) 2->124 126 Antivirus detection for URL or domain 2->126 128 14 other signatures 2->128 11 file.exe 2 4 2->11         started        14 cmd.exe 2->14         started        16 cmd.exe 2->16         started        process3 signatures4 166 Writes to foreign memory regions 11->166 168 Allocates memory in foreign processes 11->168 170 Adds a directory exclusion to Windows Defender 11->170 172 2 other signatures 11->172 18 jsc.exe 15 174 11->18         started        23 powershell.exe 23 11->23         started        25 CasPol.exe 11->25         started        33 2 other processes 11->33 27 L5JluCij7xxeCIEv6oM1EvGg.exe 14->27         started        29 conhost.exe 14->29         started        31 conhost.exe 16->31         started        process5 dnsIp6 112 111.90.146.230 SHINJIRU-MY-AS-APShinjiruTechnologySdnBhdMY Malaysia 18->112 114 194.49.94.85 EQUEST-ASNL unknown 18->114 116 6 other IPs or domains 18->116 80 C:\Users\...\zna2Oh0XNgIP4p75HiM97idC.exe, PE32 18->80 dropped 82 C:\Users\...\zI0muzLfUFN3XxX55DERCUia.exe, PE32 18->82 dropped 84 C:\Users\...\yax4NFHbaUqnlyu2nKCOkOCs.exe, PE32 18->84 dropped 86 138 other malicious files 18->86 dropped 130 Drops script or batch files to the startup folder 18->130 132 Creates HTML files with .exe extension (expired dropper behavior) 18->132 134 Writes many files with high entropy 18->134 35 5KXv1k8aymTo0sZFqKtEVU74.exe 36 18->35         started        40 IWt3N5E4YPzfZTIRr5Kn9eT2.exe 18->40         started        42 3oEb4hstwTeH2TigKA5UxRD7.exe 18->42         started        46 12 other processes 18->46 44 conhost.exe 23->44         started        136 Multi AV Scanner detection for dropped file 27->136 138 Detected unpacking (changes PE section rights) 27->138 140 Detected unpacking (overwrites its own PE header) 27->140 142 2 other signatures 27->142 file7 signatures8 process9 dnsIp10 118 149.154.167.99 TELEGRAMRU United Kingdom 35->118 120 116.202.189.41 HETZNER-ASDE Germany 35->120 102 13 other files (9 malicious) 35->102 dropped 144 Multi AV Scanner detection for dropped file 35->144 146 Detected unpacking (changes PE section rights) 35->146 148 Detected unpacking (overwrites its own PE header) 35->148 156 4 other signatures 35->156 88 C:\Users\user\AppData\Local\...\Install.exe, PE32 40->88 dropped 90 C:\Users\user\AppData\Local\...\config.txt, data 40->90 dropped 150 Writes many files with high entropy 40->150 48 Install.exe 40->48         started        92 C:\Users\user\AppData\Local\...\Install.exe, PE32 42->92 dropped 94 C:\Users\user\AppData\Local\...\config.txt, data 42->94 dropped 51 Install.exe 42->51         started        96 C:\Users\user\AppData\Local\...\Install.exe, PE32 46->96 dropped 98 C:\Users\user\AppData\Local\...\Install.exe, PE32 46->98 dropped 100 C:\Users\user\AppData\Local\...\Install.exe, PE32 46->100 dropped 104 3 other malicious files 46->104 dropped 152 Found Tor onion address 46->152 154 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 46->154 53 Install.exe 46->53         started        file11 signatures12 process13 file14 74 C:\Users\user\AppData\Local\...\Install.exe, PE32 48->74 dropped 55 Install.exe 48->55         started        76 C:\Users\user\AppData\Local\...\Install.exe, PE32 51->76 dropped 59 Install.exe 51->59         started        78 C:\Users\user\AppData\Local\...\Install.exe, PE32 53->78 dropped 61 Install.exe 53->61         started        process15 file16 106 C:\Users\user\AppData\Local\...\ikvxnHX.exe, PE32 55->106 dropped 108 C:\Windows\System32behaviorgraphroupPolicy\gpt.ini, ASCII 55->108 dropped 158 Multi AV Scanner detection for dropped file 55->158 160 Modifies Windows Defender protection settings 55->160 162 Adds extensions / path to Windows Defender exclusion list 55->162 164 Modifies Group Policy settings 55->164 63 forfiles.exe 55->63         started        66 forfiles.exe 55->66         started        110 C:\Users\user\AppData\Local\...\cwXDDGV.exe, PE32 59->110 dropped signatures17 process18 signatures19 174 Adds extensions / path to Windows Defender exclusion list 63->174 68 conhost.exe 63->68         started        70 cmd.exe 63->70         started        72 conhost.exe 66->72         started        process20
Score:
99%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/2aaa4c723b5868576aa1be98426763d3c75b1255aa639516c46d5867d2e970a4
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/2aaa4c723b5868576aa1be98426763d3c75b1255aa639516c46d5867d2e970a4/
Threat name:
ByteCode-MSIL.Trojan.Privateloader
Create hunting rule
Status:
Malicious
First seen:
2023-11-15 18:53:06 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
16 of 24 (66.67%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=fkvey4r3lbufo2vbx2meez3d2pdvwesvvjrzkfwenvmgpuxjocsa._file
Verdict:
unknown
Result
Malware family:
n/a
Score:
  10/10
Tags:
evasion spyware stealer trojan
Link:
https://tria.ge/reports/231115-xjl2rsde42/
Behaviour
Creates scheduled task(s)
Enumerates system info in registry
Modifies data under HKEY_USERS
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
System policy modification
Enumerates physical storage devices
Program crash
Drops file in Windows directory
Drops file in System32 directory
Suspicious use of SetThreadContext
Checks whether UAC is enabled
Legitimate hosting services abused for malware hosting/C2
Checks BIOS information in registry
Checks computer location settings
Drops startup file
Executes dropped EXE
Reads user/profile data of web browsers
Windows security modification
Downloads MZ/PE file
UAC bypass
Windows security bypass
Unpacked files
SH256 hash:
3b4adb0db5a9416b09d620672aa87ba8a383461bedc2f4f50601032dac6accd7
MD5 hash:
5dc10f7605f865f801009d856ca4531f
SHA1 hash:
0300e1e918caab2e94c46bfff7e15652d5eec3c5
Link:
https://www.unpac.me/results/d59b539d-8f9f-440f-ab42-a339cbbdabf5/
SH256 hash:
2aaa4c723b5868576aa1be98426763d3c75b1255aa639516c46d5867d2e970a4
MD5 hash:
cde989a6827ce732459b6d4d77488532
SHA1 hash:
59ca4788e45c59cc940a8833fcc1a5c4a393abf9
Link:
https://www.unpac.me/results/d59b539d-8f9f-440f-ab42-a339cbbdabf5/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/2aaa4c723b58/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/2aaa4c723b5868576aa1be98426763d3c75b1255aa639516c46d5867d2e970a4

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:NET
Create hunting rule
Author:malware-lu
Rule name:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:pe_imphash
Create hunting rule
Rule name:PE_Potentially_Signed_Digital_Certificate
Create hunting rule
Author:albertzsigovits
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.

  
Dropped by
PrivateLoader
  
Delivery method
Distributed via drive-by
  
URLhaus
https://urlhaus.abuse.ch/url/2730658/
Cape
Cape
https://www.capesandbox.com/analysis/458769/

Comments