Malware Analysis Report

2024-11-15 08:52

Sample ID 230224-q74s6abe93
Target c5f8a57e9e252306e9876a01fbc423420693bf04cf7c33fb0bbf972e34299f21
SHA256 c5f8a57e9e252306e9876a01fbc423420693bf04cf7c33fb0bbf972e34299f21
Tags
purecrypter agenttesla collection downloader keylogger loader persistence spyware stealer trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V6

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

c5f8a57e9e252306e9876a01fbc423420693bf04cf7c33fb0bbf972e34299f21

Threat Level: Known bad

The file c5f8a57e9e252306e9876a01fbc423420693bf04cf7c33fb0bbf972e34299f21 was found to be: Known bad.

Malicious Activity Summary

purecrypter agenttesla collection downloader keylogger loader persistence spyware stealer trojan

Purecrypter family

PureCrypter

AgentTesla

Reads data files stored by FTP clients

Checks computer location settings

Reads user/profile data of local email clients

Reads user/profile data of web browsers

Looks up external IP address via web service

Adds Run key to start application

Accesses Microsoft Outlook profiles

Suspicious use of SetThreadContext

Enumerates physical storage devices

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

outlook_office_path

outlook_win_path

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-02-24 13:55

Signatures

Purecrypter family

purecrypter

Analysis: behavioral1

Detonation Overview

Submitted

2023-02-24 13:55

Reported

2023-02-24 13:57

Platform

win10v2004-20230220-en

Max time kernel

149s

Max time network

152s

Command Line

"C:\Users\Admin\AppData\Local\Temp\c5f8a57e9e252306e9876a01fbc423420693bf04cf7c33fb0bbf972e34299f21.exe"

Signatures

AgentTesla

keylogger trojan stealer spyware agenttesla

PureCrypter

loader downloader purecrypter

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\c5f8a57e9e252306e9876a01fbc423420693bf04cf7c33fb0bbf972e34299f21.exe N/A

Reads data files stored by FTP clients

spyware stealer

Reads user/profile data of local email clients

spyware stealer

Reads user/profile data of web browsers

spyware stealer

Accesses Microsoft Outlook profiles

collection
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\c5f8a57e9e252306e9876a01fbc423420693bf04cf7c33fb0bbf972e34299f21.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\c5f8a57e9e252306e9876a01fbc423420693bf04cf7c33fb0bbf972e34299f21.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\c5f8a57e9e252306e9876a01fbc423420693bf04cf7c33fb0bbf972e34299f21.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\nEdIOIr = "C:\\Users\\Admin\\AppData\\Roaming\\nEdIOIr\\nEdIOIr.exe" C:\Users\Admin\AppData\Local\Temp\c5f8a57e9e252306e9876a01fbc423420693bf04cf7c33fb0bbf972e34299f21.exe N/A

Looks up external IP address via web service

Description Indicator Process Target
N/A api.ipify.org N/A N/A
N/A api.ipify.org N/A N/A

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\c5f8a57e9e252306e9876a01fbc423420693bf04cf7c33fb0bbf972e34299f21.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2860 wrote to memory of 1908 N/A C:\Users\Admin\AppData\Local\Temp\c5f8a57e9e252306e9876a01fbc423420693bf04cf7c33fb0bbf972e34299f21.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 2860 wrote to memory of 1908 N/A C:\Users\Admin\AppData\Local\Temp\c5f8a57e9e252306e9876a01fbc423420693bf04cf7c33fb0bbf972e34299f21.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 2860 wrote to memory of 1908 N/A C:\Users\Admin\AppData\Local\Temp\c5f8a57e9e252306e9876a01fbc423420693bf04cf7c33fb0bbf972e34299f21.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 2860 wrote to memory of 1848 N/A C:\Users\Admin\AppData\Local\Temp\c5f8a57e9e252306e9876a01fbc423420693bf04cf7c33fb0bbf972e34299f21.exe C:\Users\Admin\AppData\Local\Temp\c5f8a57e9e252306e9876a01fbc423420693bf04cf7c33fb0bbf972e34299f21.exe
PID 2860 wrote to memory of 1848 N/A C:\Users\Admin\AppData\Local\Temp\c5f8a57e9e252306e9876a01fbc423420693bf04cf7c33fb0bbf972e34299f21.exe C:\Users\Admin\AppData\Local\Temp\c5f8a57e9e252306e9876a01fbc423420693bf04cf7c33fb0bbf972e34299f21.exe
PID 2860 wrote to memory of 1848 N/A C:\Users\Admin\AppData\Local\Temp\c5f8a57e9e252306e9876a01fbc423420693bf04cf7c33fb0bbf972e34299f21.exe C:\Users\Admin\AppData\Local\Temp\c5f8a57e9e252306e9876a01fbc423420693bf04cf7c33fb0bbf972e34299f21.exe
PID 2860 wrote to memory of 1848 N/A C:\Users\Admin\AppData\Local\Temp\c5f8a57e9e252306e9876a01fbc423420693bf04cf7c33fb0bbf972e34299f21.exe C:\Users\Admin\AppData\Local\Temp\c5f8a57e9e252306e9876a01fbc423420693bf04cf7c33fb0bbf972e34299f21.exe
PID 2860 wrote to memory of 1848 N/A C:\Users\Admin\AppData\Local\Temp\c5f8a57e9e252306e9876a01fbc423420693bf04cf7c33fb0bbf972e34299f21.exe C:\Users\Admin\AppData\Local\Temp\c5f8a57e9e252306e9876a01fbc423420693bf04cf7c33fb0bbf972e34299f21.exe
PID 2860 wrote to memory of 1848 N/A C:\Users\Admin\AppData\Local\Temp\c5f8a57e9e252306e9876a01fbc423420693bf04cf7c33fb0bbf972e34299f21.exe C:\Users\Admin\AppData\Local\Temp\c5f8a57e9e252306e9876a01fbc423420693bf04cf7c33fb0bbf972e34299f21.exe
PID 2860 wrote to memory of 1848 N/A C:\Users\Admin\AppData\Local\Temp\c5f8a57e9e252306e9876a01fbc423420693bf04cf7c33fb0bbf972e34299f21.exe C:\Users\Admin\AppData\Local\Temp\c5f8a57e9e252306e9876a01fbc423420693bf04cf7c33fb0bbf972e34299f21.exe
PID 2860 wrote to memory of 1848 N/A C:\Users\Admin\AppData\Local\Temp\c5f8a57e9e252306e9876a01fbc423420693bf04cf7c33fb0bbf972e34299f21.exe C:\Users\Admin\AppData\Local\Temp\c5f8a57e9e252306e9876a01fbc423420693bf04cf7c33fb0bbf972e34299f21.exe

outlook_office_path

Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\c5f8a57e9e252306e9876a01fbc423420693bf04cf7c33fb0bbf972e34299f21.exe N/A

outlook_win_path

Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\c5f8a57e9e252306e9876a01fbc423420693bf04cf7c33fb0bbf972e34299f21.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\c5f8a57e9e252306e9876a01fbc423420693bf04cf7c33fb0bbf972e34299f21.exe

"C:\Users\Admin\AppData\Local\Temp\c5f8a57e9e252306e9876a01fbc423420693bf04cf7c33fb0bbf972e34299f21.exe"

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMgAwAA==

C:\Users\Admin\AppData\Local\Temp\c5f8a57e9e252306e9876a01fbc423420693bf04cf7c33fb0bbf972e34299f21.exe

C:\Users\Admin\AppData\Local\Temp\c5f8a57e9e252306e9876a01fbc423420693bf04cf7c33fb0bbf972e34299f21.exe

Network

Country Destination Domain Proto
US 8.8.8.8:53 www.ugr.leszczynskie.net udp
PL 185.11.102.185:80 www.ugr.leszczynskie.net tcp
US 8.8.8.8:53 210.81.184.52.in-addr.arpa udp
US 8.8.8.8:53 185.102.11.185.in-addr.arpa udp
US 13.89.179.9:443 tcp
US 8.8.8.8:53 api.ipify.org udp
US 64.185.227.155:443 api.ipify.org tcp
US 8.8.8.8:53 155.227.185.64.in-addr.arpa udp
US 8.8.8.8:53 dropbuyinc.ga udp
NL 185.246.221.63:80 dropbuyinc.ga tcp
US 8.8.8.8:53 63.221.246.185.in-addr.arpa udp
US 8.8.8.8:53 62.13.109.52.in-addr.arpa udp
US 93.184.220.29:80 tcp
US 209.197.3.8:80 tcp
US 209.197.3.8:80 tcp
NL 173.223.113.164:443 tcp
NL 173.223.113.131:80 tcp
US 204.79.197.203:80 tcp

Files

memory/2860-133-0x0000000000B40000-0x0000000000B4C000-memory.dmp

memory/2860-134-0x0000000005550000-0x0000000005560000-memory.dmp

memory/2860-135-0x0000000005550000-0x0000000005560000-memory.dmp

memory/2860-136-0x00000000068E0000-0x0000000006902000-memory.dmp

memory/1908-137-0x0000000002A10000-0x0000000002A46000-memory.dmp

memory/1908-138-0x00000000057D0000-0x0000000005DF8000-memory.dmp

memory/1908-139-0x0000000005190000-0x00000000051A0000-memory.dmp

memory/1908-140-0x0000000005190000-0x00000000051A0000-memory.dmp

memory/1908-141-0x0000000005540000-0x00000000055A6000-memory.dmp

memory/1908-142-0x00000000056E0000-0x0000000005746000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_1zvrrs0r.bes.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

memory/1908-152-0x0000000006360000-0x000000000637E000-memory.dmp

memory/1908-153-0x00000000079B0000-0x000000000802A000-memory.dmp

memory/1908-154-0x0000000006860000-0x000000000687A000-memory.dmp

memory/1908-155-0x0000000005190000-0x00000000051A0000-memory.dmp

memory/1908-156-0x0000000005190000-0x00000000051A0000-memory.dmp

memory/1908-157-0x0000000005190000-0x00000000051A0000-memory.dmp

memory/1908-158-0x0000000005190000-0x00000000051A0000-memory.dmp

memory/1848-162-0x0000000000400000-0x0000000000430000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\c5f8a57e9e252306e9876a01fbc423420693bf04cf7c33fb0bbf972e34299f21.exe.log

MD5 3a9188331a78f1dbce606db64b841fcb
SHA1 8e2c99b7c477d06591a856a4ea3e1e214719eee8
SHA256 db4137e258a0f6159fda559a5f6dd2704be0582c3f0586f65040c7ad1eb68451
SHA512 d1a994610a045d89d5d306866c24ae56bf16555414b8f63f632552568e67b5586f26d5a17a1f0a55ada376730298e6d856e9161828d4eae9decfa4e015e0e90a

memory/1848-165-0x00000000056B0000-0x0000000005C54000-memory.dmp

memory/1848-166-0x00000000052B0000-0x00000000052C0000-memory.dmp

memory/1848-167-0x0000000006910000-0x00000000069A2000-memory.dmp

memory/1848-170-0x0000000006AF0000-0x0000000006AFA000-memory.dmp

memory/1848-171-0x0000000006B90000-0x0000000006BE0000-memory.dmp

memory/1848-172-0x0000000006DB0000-0x0000000006F72000-memory.dmp

memory/1848-179-0x00000000052B0000-0x00000000052C0000-memory.dmp