Analysis Overview
SHA256
bc2a5e452669de43c4f4533c995b515bace2941ea5b45bb537085b204ee5d54b
Threat Level: Known bad
The file bc2a5e452669de43c4f4533c995b515bace2941ea5b45bb537085b204ee5d54b was found to be: Known bad.
Malicious Activity Summary
XpertRAT
UAC bypass
Windows security bypass
XpertRAT Core Payload
NirSoft WebBrowserPassView
NirSoft MailPassView
Nirsoft
UPX packed file
Adds policy Run key to start application
Windows security modification
Deletes itself
Adds Run key to start application
Checks whether UAC is enabled
Program crash
Suspicious use of SetThreadContext
Enumerates physical storage devices
Suspicious use of SetWindowsHookEx
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
System policy modification
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2021-09-21 16:20
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2021-09-21 16:20
Reported
2021-09-21 16:23
Platform
win10-en-20210920
Max time kernel
118s
Max time network
151s
Command Line
Signatures
UAC bypass
Windows security bypass
XpertRAT
XpertRAT Core Payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
NirSoft MailPassView
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
NirSoft WebBrowserPassView
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Nirsoft
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Adds policy Run key to start application
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run | C:\Program Files (x86)\Internet Explorer\iexplore.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\L3Q7J4T2-J8A6-L6O4-W4G3-U5J7D0W2W5F0 = "C:\\Users\\Admin\\AppData\\Roaming\\L3Q7J4T2-J8A6-L6O4-W4G3-U5J7D0W2W5F0\\L3Q7J4T2-J8A6-L6O4-W4G3-U5J7D0W2W5F0.exe" | C:\Program Files (x86)\Internet Explorer\iexplore.exe | N/A |
UPX packed file
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Deletes itself
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\notepad.exe | N/A |
Windows security modification
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UACDisableNotify = "0" | C:\Users\Admin\AppData\Local\Temp\bc2a5e452669de43c4f4533c995b515bace2941ea5b45bb537085b204ee5d54b.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run | C:\Program Files (x86)\Internet Explorer\iexplore.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\L3Q7J4T2-J8A6-L6O4-W4G3-U5J7D0W2W5F0 = "C:\\Users\\Admin\\AppData\\Roaming\\L3Q7J4T2-J8A6-L6O4-W4G3-U5J7D0W2W5F0\\L3Q7J4T2-J8A6-L6O4-W4G3-U5J7D0W2W5F0.exe" | C:\Program Files (x86)\Internet Explorer\iexplore.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-2481030822-2828258191-1606198294-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run | C:\Program Files (x86)\Internet Explorer\iexplore.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2481030822-2828258191-1606198294-1000\Software\Microsoft\Windows\CurrentVersion\Run\L3Q7J4T2-J8A6-L6O4-W4G3-U5J7D0W2W5F0 = "C:\\Users\\Admin\\AppData\\Roaming\\L3Q7J4T2-J8A6-L6O4-W4G3-U5J7D0W2W5F0\\L3Q7J4T2-J8A6-L6O4-W4G3-U5J7D0W2W5F0.exe" | C:\Program Files (x86)\Internet Explorer\iexplore.exe | N/A |
Checks whether UAC is enabled
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" | C:\Users\Admin\AppData\Local\Temp\bc2a5e452669de43c4f4533c995b515bace2941ea5b45bb537085b204ee5d54b.exe | N/A |
Program crash
Suspicious use of SetThreadContext
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\bc2a5e452669de43c4f4533c995b515bace2941ea5b45bb537085b204ee5d54b.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Program Files (x86)\Internet Explorer\iexplore.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Program Files (x86)\Internet Explorer\iexplore.exe | N/A |
| Token: SeRestorePrivilege | N/A | C:\Windows\SysWOW64\WerFault.exe | N/A |
| Token: SeBackupPrivilege | N/A | C:\Windows\SysWOW64\WerFault.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\SysWOW64\WerFault.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\bc2a5e452669de43c4f4533c995b515bace2941ea5b45bb537085b204ee5d54b.exe | N/A |
| N/A | N/A | C:\Program Files (x86)\Internet Explorer\iexplore.exe | N/A |
Suspicious use of WriteProcessMemory
System policy modification
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" | C:\Users\Admin\AppData\Local\Temp\bc2a5e452669de43c4f4533c995b515bace2941ea5b45bb537085b204ee5d54b.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\bc2a5e452669de43c4f4533c995b515bace2941ea5b45bb537085b204ee5d54b.exe
"C:\Users\Admin\AppData\Local\Temp\bc2a5e452669de43c4f4533c995b515bace2941ea5b45bb537085b204ee5d54b.exe"
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Start-Sleep -Seconds 3
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Start-Sleep -s 15
C:\Users\Admin\AppData\Local\Temp\bc2a5e452669de43c4f4533c995b515bace2941ea5b45bb537085b204ee5d54b.exe
C:\Users\Admin\AppData\Local\Temp\bc2a5e452669de43c4f4533c995b515bace2941ea5b45bb537085b204ee5d54b.exe
C:\Users\Admin\AppData\Local\Temp\bc2a5e452669de43c4f4533c995b515bace2941ea5b45bb537085b204ee5d54b.exe
C:\Users\Admin\AppData\Local\Temp\bc2a5e452669de43c4f4533c995b515bace2941ea5b45bb537085b204ee5d54b.exe
C:\Program Files (x86)\Internet Explorer\iexplore.exe
C:\Users\Admin\AppData\Local\Temp\bc2a5e452669de43c4f4533c995b515bace2941ea5b45bb537085b204ee5d54b.exe
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1484 -s 96
C:\Program Files (x86)\Internet Explorer\iexplore.exe
C:\Users\Admin\AppData\Local\Temp\bc2a5e452669de43c4f4533c995b515bace2941ea5b45bb537085b204ee5d54b.exe
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3796 -s 92
C:\Program Files (x86)\Internet Explorer\iexplore.exe
C:\Users\Admin\AppData\Local\Temp\bc2a5e452669de43c4f4533c995b515bace2941ea5b45bb537085b204ee5d54b.exe
C:\Windows\SysWOW64\notepad.exe
notepad.exe
C:\Program Files (x86)\Internet Explorer\iexplore.exe
/stext "C:\Users\Admin\AppData\Roaming\L3Q7J4T2-J8A6-L6O4-W4G3-U5J7D0W2W5F0\ktucvqjcs0.txt"
C:\Program Files (x86)\Internet Explorer\iexplore.exe
/stext "C:\Users\Admin\AppData\Roaming\L3Q7J4T2-J8A6-L6O4-W4G3-U5J7D0W2W5F0\ktucvqjcs1.txt"
C:\Program Files (x86)\Internet Explorer\iexplore.exe
/stext "C:\Users\Admin\AppData\Roaming\L3Q7J4T2-J8A6-L6O4-W4G3-U5J7D0W2W5F0\ktucvqjcs2.txt"
C:\Program Files (x86)\Internet Explorer\iexplore.exe
/stext "C:\Users\Admin\AppData\Roaming\L3Q7J4T2-J8A6-L6O4-W4G3-U5J7D0W2W5F0\ktucvqjcs3.txt"
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1932 -s 92
C:\Program Files (x86)\Internet Explorer\iexplore.exe
/stext "C:\Users\Admin\AppData\Roaming\L3Q7J4T2-J8A6-L6O4-W4G3-U5J7D0W2W5F0\ktucvqjcs3.txt"
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3704 -s 164
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | store2.gofile.io | udp |
| FR | 31.14.69.10:443 | store2.gofile.io | tcp |
| US | 8.8.8.8:53 | kapasky-antivirus.firewall-gateway.net | udp |
| FR | 146.59.132.186:4000 | kapasky-antivirus.firewall-gateway.net | tcp |
| FR | 146.59.132.186:4000 | kapasky-antivirus.firewall-gateway.net | tcp |
| FR | 146.59.132.186:4000 | kapasky-antivirus.firewall-gateway.net | tcp |
| FR | 146.59.132.186:4000 | kapasky-antivirus.firewall-gateway.net | tcp |
| FR | 146.59.132.186:4000 | kapasky-antivirus.firewall-gateway.net | tcp |
| US | 52.182.143.208:443 | tcp |
Files
memory/2352-115-0x0000000000080000-0x0000000000081000-memory.dmp
memory/2352-117-0x0000000004EB0000-0x0000000004EB1000-memory.dmp
memory/2352-118-0x00000000049B0000-0x00000000049B1000-memory.dmp
memory/2352-119-0x0000000002360000-0x0000000002361000-memory.dmp
memory/2352-120-0x00000000049B0000-0x0000000004EAE000-memory.dmp
memory/3016-121-0x0000000000000000-mapping.dmp
memory/3016-124-0x0000000004E60000-0x0000000004E61000-memory.dmp
memory/3016-125-0x0000000007870000-0x0000000007871000-memory.dmp
memory/3016-126-0x0000000004EB0000-0x0000000004EB1000-memory.dmp
memory/3016-127-0x0000000004EB2000-0x0000000004EB3000-memory.dmp
memory/3016-128-0x00000000077B0000-0x00000000077B1000-memory.dmp
memory/3016-129-0x0000000007EA0000-0x0000000007EA1000-memory.dmp
memory/3016-130-0x0000000007F10000-0x0000000007F11000-memory.dmp
memory/3016-131-0x00000000082D0000-0x00000000082D1000-memory.dmp
memory/3016-132-0x0000000008110000-0x0000000008111000-memory.dmp
memory/3016-133-0x0000000008920000-0x0000000008921000-memory.dmp
memory/3016-134-0x0000000008A30000-0x0000000008A31000-memory.dmp
memory/3016-139-0x000000000A060000-0x000000000A061000-memory.dmp
memory/3016-140-0x0000000009660000-0x0000000009661000-memory.dmp
memory/680-142-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log
| MD5 | 66382a4ca6c4dcf75ce41417d44be93e |
| SHA1 | 8132cbef1c12f8a89a68a6153ade4286bf130812 |
| SHA256 | a70acce0f4c6ab59b88ce79d84c38d4abffe19b72b033250499b17d788a2db56 |
| SHA512 | 2bf66f2850f4a65220085c55a5b3c8866453104d78fe516e5bd6e3e47df783062ce4ea10de580f2eb0274ac8c3ce71965201c49ef55a78f307731ccc8600aadc |
memory/3016-152-0x0000000004EB3000-0x0000000004EB4000-memory.dmp
memory/680-153-0x0000000007560000-0x0000000007561000-memory.dmp
memory/680-154-0x0000000007562000-0x0000000007563000-memory.dmp
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
| MD5 | 848d460d46a279e4ecb4176f2617761b |
| SHA1 | ecc09b6671e6813eca980926b3d204d7a9a7ab0c |
| SHA256 | fd01b8faeb6155cee73cefdb4727f4b6a6aa3c092e0d9cbc0758deae945d0b71 |
| SHA512 | 2d26266583ad29c1cc0ef9ef45455bc85e1380a761e0f6f160e06de57b4832655b1707b73f8889de07dc4f98a882e02303801f9936fbae7ec46c48a8bbe23b74 |
memory/680-166-0x0000000007563000-0x0000000007564000-memory.dmp
memory/2352-167-0x0000000007AE0000-0x0000000007B2F000-memory.dmp
memory/2352-168-0x0000000006E00000-0x0000000006E30000-memory.dmp
memory/3672-169-0x0000000000400000-0x000000000042C000-memory.dmp
memory/3672-170-0x00000000004010B8-mapping.dmp
memory/1484-174-0x0000000000401364-mapping.dmp
memory/3672-175-0x0000000000400000-0x000000000042C000-memory.dmp
memory/3796-177-0x0000000000401364-mapping.dmp
memory/2448-179-0x0000000000401364-mapping.dmp
memory/2448-178-0x0000000000400000-0x0000000000443000-memory.dmp
memory/2448-182-0x0000000003720000-0x0000000003873000-memory.dmp
memory/2448-183-0x0000000003721000-0x000000000381D000-memory.dmp
memory/3632-186-0x0000000000000000-mapping.dmp
memory/504-187-0x0000000000400000-0x0000000000426000-memory.dmp
memory/504-188-0x0000000000423BC0-mapping.dmp
memory/1204-191-0x0000000000400000-0x000000000041B000-memory.dmp
memory/1204-192-0x0000000000411654-mapping.dmp
memory/3092-195-0x0000000000400000-0x0000000000459000-memory.dmp
memory/3092-196-0x0000000000442F04-mapping.dmp
C:\Users\Admin\AppData\Roaming\L3Q7J4T2-J8A6-L6O4-W4G3-U5J7D0W2W5F0\ktucvqjcs2.txt
| MD5 | f94dc819ca773f1e3cb27abbc9e7fa27 |
| SHA1 | 9a7700efadc5ea09ab288544ef1e3cd876255086 |
| SHA256 | a3377ade83786c2bdff5db19ff4dbfd796da4312402b5e77c4c63e38cc6eff92 |
| SHA512 | 72a2c10d7a53a7f9a319dab66d77ed65639e9aa885b551e0055fc7eaf6ef33bbf109205b42ae11555a0f292563914bc6edb63b310c6f9bda9564095f77ab9196 |
memory/1932-201-0x0000000000413750-mapping.dmp
memory/3704-203-0x0000000000413750-mapping.dmp
memory/3704-202-0x0000000000400000-0x0000000000416000-memory.dmp