Analysis Overview
SHA256
3730e600a60fed05d20e23e9340e37e5f5f072e6d4801150326ff4e2a4fdb4c5
Threat Level: Known bad
The file 3730e600a60fed05d20e23e9340e37e5f5f072e6d4801150326ff4e2a4fdb4c5.exe was found to be: Known bad.
Malicious Activity Summary
PurpleFox
Detect PurpleFox Rootkit
Gh0st RAT payload
Gh0strat
Detects executables calling ClearMyTracksByProcess
Drops file in Drivers directory
Sets service image path in registry
Executes dropped EXE
Deletes itself
Loads dropped DLL
Drops file in System32 directory
Unsigned PE
Suspicious use of WriteProcessMemory
Runs ping.exe
Suspicious behavior: LoadsDriver
Suspicious use of AdjustPrivilegeToken
Modifies data under HKEY_USERS
MITRE ATT&CK Matrix V13
Analysis: static1
Detonation Overview
Reported
2024-06-21 01:11
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-06-21 01:11
Reported
2024-06-21 01:13
Platform
win7-20240611-en
Max time kernel
146s
Max time network
155s
Command Line
Signatures
Detect PurpleFox Rootkit
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Gh0st RAT payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Gh0strat
PurpleFox
Detects executables calling ClearMyTracksByProcess
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Drops file in Drivers directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\system32\drivers\QAssist.sys | C:\Windows\SysWOW64\sainbox.exe | N/A |
Sets service image path in registry
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\QAssist\ImagePath = "system32\\DRIVERS\\QAssist.sys" | C:\Windows\SysWOW64\sainbox.exe | N/A |
Deletes itself
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\cmd.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\sainbox.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\sainbox.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\sainbox.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\SysWOW64\sainbox.exe | C:\Users\Admin\AppData\Local\Temp\3730e600a60fed05d20e23e9340e37e5f5f072e6d4801150326ff4e2a4fdb4c5.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\sainbox.exe | C:\Users\Admin\AppData\Local\Temp\3730e600a60fed05d20e23e9340e37e5f5f072e6d4801150326ff4e2a4fdb4c5.exe | N/A |
Modifies data under HKEY_USERS
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings | C:\Windows\SysWOW64\sainbox.exe | N/A |
| Set value (str) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix | C:\Windows\SysWOW64\sainbox.exe | N/A |
| Set value (str) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" | C:\Windows\SysWOW64\sainbox.exe | N/A |
| Set value (str) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" | C:\Windows\SysWOW64\sainbox.exe | N/A |
Runs ping.exe
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\PING.EXE | N/A |
Suspicious behavior: LoadsDriver
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\sainbox.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\3730e600a60fed05d20e23e9340e37e5f5f072e6d4801150326ff4e2a4fdb4c5.exe | N/A |
| Token: SeLoadDriverPrivilege | N/A | C:\Windows\SysWOW64\sainbox.exe | N/A |
| Token: 33 | N/A | C:\Windows\SysWOW64\sainbox.exe | N/A |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Windows\SysWOW64\sainbox.exe | N/A |
| Token: 33 | N/A | C:\Windows\SysWOW64\sainbox.exe | N/A |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Windows\SysWOW64\sainbox.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\3730e600a60fed05d20e23e9340e37e5f5f072e6d4801150326ff4e2a4fdb4c5.exe
"C:\Users\Admin\AppData\Local\Temp\3730e600a60fed05d20e23e9340e37e5f5f072e6d4801150326ff4e2a4fdb4c5.exe"
C:\Windows\SysWOW64\sainbox.exe
C:\Windows\SysWOW64\sainbox.exe -auto
C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ping -n 2 127.0.0.1 > nul && del C:\Users\Admin\AppData\Local\Temp\3730E6~1.EXE > nul
C:\Windows\SysWOW64\sainbox.exe
C:\Windows\SysWOW64\sainbox.exe -acsi
C:\Windows\SysWOW64\PING.EXE
ping -n 2 127.0.0.1
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | zk2733763848.e2.luyouxia.net | udp |
| CN | 123.99.198.201:21155 | zk2733763848.e2.luyouxia.net | tcp |
| CN | 123.99.198.201:21155 | zk2733763848.e2.luyouxia.net | tcp |
| CN | 123.99.198.201:21155 | zk2733763848.e2.luyouxia.net | tcp |
| CN | 123.99.198.201:21155 | zk2733763848.e2.luyouxia.net | tcp |
| CN | 123.99.198.201:21155 | zk2733763848.e2.luyouxia.net | tcp |
| CN | 123.99.198.201:21155 | zk2733763848.e2.luyouxia.net | tcp |
| CN | 123.99.198.201:21155 | zk2733763848.e2.luyouxia.net | tcp |
Files
memory/2388-1-0x0000000010000000-0x000000001019F000-memory.dmp
C:\Windows\SysWOW64\sainbox.exe
| MD5 | 93aef31e912fa9fa0c6423f5eee39b92 |
| SHA1 | 01743de8f41cedaec95c71d9559624fd537d4dac |
| SHA256 | 3730e600a60fed05d20e23e9340e37e5f5f072e6d4801150326ff4e2a4fdb4c5 |
| SHA512 | 502c990c9fc0d81526aec775834c852106df585428f9830e983219ea805a8f54013de38c2d741b0765e749165569322662dc66f01555f80c1c35616bb4dfda63 |
Analysis: behavioral2
Detonation Overview
Submitted
2024-06-21 01:11
Reported
2024-06-21 01:14
Platform
win10v2004-20240226-en
Max time kernel
155s
Max time network
159s
Command Line
Signatures
Detect PurpleFox Rootkit
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Gh0st RAT payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Gh0strat
PurpleFox
Detects executables calling ClearMyTracksByProcess
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Drops file in Drivers directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\system32\drivers\QAssist.sys | C:\Windows\SysWOW64\sainbox.exe | N/A |
Sets service image path in registry
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\QAssist\ImagePath = "system32\\DRIVERS\\QAssist.sys" | C:\Windows\SysWOW64\sainbox.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\sainbox.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\sainbox.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\SysWOW64\sainbox.exe | C:\Users\Admin\AppData\Local\Temp\3730e600a60fed05d20e23e9340e37e5f5f072e6d4801150326ff4e2a4fdb4c5.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\sainbox.exe | C:\Users\Admin\AppData\Local\Temp\3730e600a60fed05d20e23e9340e37e5f5f072e6d4801150326ff4e2a4fdb4c5.exe | N/A |
Modifies data under HKEY_USERS
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix | C:\Windows\SysWOW64\sainbox.exe | N/A |
| Set value (str) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" | C:\Windows\SysWOW64\sainbox.exe | N/A |
| Set value (str) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" | C:\Windows\SysWOW64\sainbox.exe | N/A |
Runs ping.exe
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\PING.EXE | N/A |
Suspicious behavior: LoadsDriver
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\sainbox.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\3730e600a60fed05d20e23e9340e37e5f5f072e6d4801150326ff4e2a4fdb4c5.exe | N/A |
| Token: SeLoadDriverPrivilege | N/A | C:\Windows\SysWOW64\sainbox.exe | N/A |
| Token: 33 | N/A | C:\Windows\SysWOW64\sainbox.exe | N/A |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Windows\SysWOW64\sainbox.exe | N/A |
| Token: 33 | N/A | C:\Windows\SysWOW64\sainbox.exe | N/A |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Windows\SysWOW64\sainbox.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\3730e600a60fed05d20e23e9340e37e5f5f072e6d4801150326ff4e2a4fdb4c5.exe
"C:\Users\Admin\AppData\Local\Temp\3730e600a60fed05d20e23e9340e37e5f5f072e6d4801150326ff4e2a4fdb4c5.exe"
C:\Windows\SysWOW64\sainbox.exe
C:\Windows\SysWOW64\sainbox.exe -auto
C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ping -n 2 127.0.0.1 > nul && del C:\Users\Admin\AppData\Local\Temp\3730E6~1.EXE > nul
C:\Windows\SysWOW64\sainbox.exe
C:\Windows\SysWOW64\sainbox.exe -acsi
C:\Windows\SysWOW64\PING.EXE
ping -n 2 127.0.0.1
C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4088 --field-trial-handle=3088,i,14310325015283915034,7660943942870463106,262144 --variations-seed-version /prefetch:8
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 228.249.119.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | zk2733763848.e2.luyouxia.net | udp |
| CN | 123.99.198.201:21155 | zk2733763848.e2.luyouxia.net | tcp |
| US | 8.8.8.8:53 | 144.107.17.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 17.160.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 154.239.44.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 13.86.106.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 50.23.12.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 171.39.242.20.in-addr.arpa | udp |
| US | 13.107.253.67:443 | tcp | |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| CN | 123.99.198.201:21155 | zk2733763848.e2.luyouxia.net | tcp |
| CN | 123.99.198.201:21155 | zk2733763848.e2.luyouxia.net | tcp |
| CN | 123.99.198.201:21155 | zk2733763848.e2.luyouxia.net | tcp |
| US | 8.8.8.8:53 | 11.227.111.52.in-addr.arpa | udp |
| CN | 123.99.198.201:21155 | zk2733763848.e2.luyouxia.net | tcp |
| CN | 123.99.198.201:21155 | zk2733763848.e2.luyouxia.net | tcp |
| US | 8.8.8.8:53 | 13.179.89.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | chromewebstore.googleapis.com | udp |
| US | 8.8.8.8:53 | chromewebstore.googleapis.com | udp |
| N/A | 172.217.169.74:443 | tcp |
Files
memory/2548-0-0x0000000010000000-0x000000001019F000-memory.dmp
C:\Windows\SysWOW64\sainbox.exe
| MD5 | 93aef31e912fa9fa0c6423f5eee39b92 |
| SHA1 | 01743de8f41cedaec95c71d9559624fd537d4dac |
| SHA256 | 3730e600a60fed05d20e23e9340e37e5f5f072e6d4801150326ff4e2a4fdb4c5 |
| SHA512 | 502c990c9fc0d81526aec775834c852106df585428f9830e983219ea805a8f54013de38c2d741b0765e749165569322662dc66f01555f80c1c35616bb4dfda63 |
memory/1140-11-0x0000000010000000-0x000000001019F000-memory.dmp