Analysis Overview
SHA256
ce73bb13f6e878b1752594ba119c3f4a721ef2cb36ea4e26db13d16bcf181a66
Threat Level: Known bad
The file ce73bb13f6e878b1752594ba119c3f4a721ef2cb36ea4e26db13d16bcf181a66 was found to be: Known bad.
Malicious Activity Summary
Detect PurpleFox Rootkit
PurpleFox
Gh0strat
Gh0st RAT payload
Sets service image path in registry
Drops file in Drivers directory
UPX packed file
Deletes itself
Loads dropped DLL
Executes dropped EXE
Suspicious use of NtSetInformationThreadHideFromDebugger
Drops file in System32 directory
Unsigned PE
Runs ping.exe
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: LoadsDriver
Suspicious use of WriteProcessMemory
MITRE ATT&CK Matrix V13
Analysis: static1
Detonation Overview
Reported
2024-06-05 19:31
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral2
Detonation Overview
Submitted
2024-06-05 19:29
Reported
2024-06-05 19:43
Platform
win10v2004-20240426-en
Max time kernel
150s
Max time network
161s
Command Line
Signatures
Detect PurpleFox Rootkit
| Description | Indicator | Process | Target |
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Gh0st RAT payload
| Description | Indicator | Process | Target |
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Gh0strat
PurpleFox
Drops file in Drivers directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\system32\drivers\QAssist.sys | C:\Windows\SysWOW64\Meudt.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\Meudt.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\Meudt.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\Meudt.exe | N/A |
UPX packed file
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
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Drops file in System32 directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\SysWOW64\Meudt.exe | C:\Users\Admin\AppData\Local\Temp\ce73bb13f6e878b1752594ba119c3f4a721ef2cb36ea4e26db13d16bcf181a66.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\Meudt.exe | C:\Users\Admin\AppData\Local\Temp\ce73bb13f6e878b1752594ba119c3f4a721ef2cb36ea4e26db13d16bcf181a66.exe | N/A |
Suspicious use of NtSetInformationThreadHideFromDebugger
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\Meudt.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\ce73bb13f6e878b1752594ba119c3f4a721ef2cb36ea4e26db13d16bcf181a66.exe | N/A |
| Token: SeLoadDriverPrivilege | N/A | C:\Windows\SysWOW64\Meudt.exe | N/A |
| Token: 33 | N/A | C:\Windows\SysWOW64\Meudt.exe | N/A |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Windows\SysWOW64\Meudt.exe | N/A |
| Token: 33 | N/A | C:\Windows\SysWOW64\Meudt.exe | N/A |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Windows\SysWOW64\Meudt.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\ce73bb13f6e878b1752594ba119c3f4a721ef2cb36ea4e26db13d16bcf181a66.exe
"C:\Users\Admin\AppData\Local\Temp\ce73bb13f6e878b1752594ba119c3f4a721ef2cb36ea4e26db13d16bcf181a66.exe"
C:\Windows\SysWOW64\Meudt.exe
C:\Windows\SysWOW64\Meudt.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\CE73BB~1.EXE > nul
C:\Windows\SysWOW64\Meudt.exe
C:\Windows\SysWOW64\Meudt.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 | 228.249.119.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 131.83.221.88.in-addr.arpa | udp |
| US | 45.66.159.41:2022 | tcp | |
| US | 8.8.8.8:53 | 0.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 196.249.167.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 104.219.191.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 50.23.12.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 206.23.85.13.in-addr.arpa | udp |
| US | 45.66.159.41:2022 | tcp | |
| US | 8.8.8.8:53 | 129.83.221.88.in-addr.arpa | udp |
| US | 45.66.159.41:2022 | tcp | |
| US | 8.8.8.8:53 | 145.83.221.88.in-addr.arpa | udp |
| US | 45.66.159.41:2022 | tcp | |
| US | 45.66.159.41:2022 | tcp | |
| US | 8.8.8.8:53 | 215.143.182.52.in-addr.arpa | udp |
Files
memory/1572-0-0x0000000000400000-0x0000000000529000-memory.dmp
memory/1572-1-0x0000000000400000-0x0000000000529000-memory.dmp
memory/1572-2-0x0000000000400000-0x0000000000529000-memory.dmp
memory/1572-3-0x0000000010000000-0x00000000101BA000-memory.dmp
memory/1572-6-0x0000000010000000-0x00000000101BA000-memory.dmp
memory/1572-5-0x0000000010000000-0x00000000101BA000-memory.dmp
C:\Windows\SysWOW64\Meudt.exe
| MD5 | 35018b3df0fbc106fb002815c2f9ce38 |
| SHA1 | 30075595137293ef340081d96b70d5dd5549d31e |
| SHA256 | af77f5a1483355f87dc9dc441a6fc68f21c42a569940a17ff89416e8ecc78acf |
| SHA512 | 1aaddb92f3adc13b3ec33718b4c6a61d462199a89f7e0e3156000387e2fb016564d72633563e63b7a222656fd812d4ea53f2077ab2e9eeafd707c90fb90247bb |
memory/2504-12-0x0000000000400000-0x0000000000529000-memory.dmp
C:\Windows\SysWOW64\Meudt.exe
| MD5 | 2b1b0358621c770ec250ed2560ed9548 |
| SHA1 | be877624184d6e818c68b8d65ece7ad445ca9f9f |
| SHA256 | 4f57d3c5042236a8e01bd06bbe2feaf42fa6c50a237700cf4a2eacf3a7d6bfec |
| SHA512 | 8ad50e7dfdcef6488b27b59630da54099741ffd1a2a336b98b2680098904155ad67dce52cb0bd3a4737af6a1819a1a53de758a84b853d254f87a916cf02a320d |
memory/1572-7-0x0000000010000000-0x00000000101BA000-memory.dmp
memory/2504-13-0x0000000000400000-0x0000000000529000-memory.dmp
memory/2504-14-0x0000000000400000-0x0000000000529000-memory.dmp
memory/2504-17-0x0000000010000000-0x00000000101BA000-memory.dmp
C:\Windows\SysWOW64\Meudt.exe
| MD5 | 2d78d99e16a187825a20f9fddf2e66e3 |
| SHA1 | d8fa6df2f929f40d564395335dd19dbe67b4138c |
| SHA256 | ce73bb13f6e878b1752594ba119c3f4a721ef2cb36ea4e26db13d16bcf181a66 |
| SHA512 | b28eb669facdbe958dbada89d5c64e956c91fb1952cdba797a43a813b475817f6d3ccd8c2ea835acd2d499d6e8c1e2f9b455428f1d85eb4f06aeef0f80a5080c |
memory/3656-23-0x0000000000400000-0x0000000000529000-memory.dmp
memory/2504-21-0x0000000000400000-0x0000000000529000-memory.dmp
memory/1572-20-0x0000000000400000-0x0000000000529000-memory.dmp
memory/2504-18-0x0000000010000000-0x00000000101BA000-memory.dmp
memory/2504-15-0x0000000010000000-0x00000000101BA000-memory.dmp
memory/3656-24-0x0000000000400000-0x0000000000529000-memory.dmp
memory/3656-25-0x0000000000400000-0x0000000000529000-memory.dmp
memory/3656-28-0x0000000010000000-0x00000000101BA000-memory.dmp
memory/3656-26-0x0000000010000000-0x00000000101BA000-memory.dmp
memory/3656-30-0x0000000010000000-0x00000000101BA000-memory.dmp
memory/3656-33-0x0000000010000000-0x00000000101BA000-memory.dmp
memory/3656-35-0x0000000010000000-0x00000000101BA000-memory.dmp
memory/3656-29-0x0000000010000000-0x00000000101BA000-memory.dmp
memory/3656-36-0x0000000000400000-0x0000000000529000-memory.dmp
Analysis: behavioral1
Detonation Overview
Submitted
2024-06-05 19:29
Reported
2024-06-05 19:43
Platform
win7-20240508-en
Max time kernel
150s
Max time network
142s
Command Line
Signatures
Detect PurpleFox Rootkit
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
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Gh0st RAT payload
| Description | Indicator | Process | Target |
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Gh0strat
PurpleFox
Drops file in Drivers directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\system32\drivers\QAssist.sys | C:\Windows\SysWOW64\Meudt.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\Meudt.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\Meudt.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\Meudt.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\Meudt.exe | N/A |
UPX packed file
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
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Drops file in System32 directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\SysWOW64\Meudt.exe | C:\Users\Admin\AppData\Local\Temp\ce73bb13f6e878b1752594ba119c3f4a721ef2cb36ea4e26db13d16bcf181a66.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\Meudt.exe | C:\Users\Admin\AppData\Local\Temp\ce73bb13f6e878b1752594ba119c3f4a721ef2cb36ea4e26db13d16bcf181a66.exe | N/A |
Suspicious use of NtSetInformationThreadHideFromDebugger
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\Meudt.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\ce73bb13f6e878b1752594ba119c3f4a721ef2cb36ea4e26db13d16bcf181a66.exe | N/A |
| Token: SeLoadDriverPrivilege | N/A | C:\Windows\SysWOW64\Meudt.exe | N/A |
| Token: 33 | N/A | C:\Windows\SysWOW64\Meudt.exe | N/A |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Windows\SysWOW64\Meudt.exe | N/A |
| Token: 33 | N/A | C:\Windows\SysWOW64\Meudt.exe | N/A |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Windows\SysWOW64\Meudt.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\ce73bb13f6e878b1752594ba119c3f4a721ef2cb36ea4e26db13d16bcf181a66.exe
"C:\Users\Admin\AppData\Local\Temp\ce73bb13f6e878b1752594ba119c3f4a721ef2cb36ea4e26db13d16bcf181a66.exe"
C:\Windows\SysWOW64\Meudt.exe
C:\Windows\SysWOW64\Meudt.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\CE73BB~1.EXE > nul
C:\Windows\SysWOW64\Meudt.exe
C:\Windows\SysWOW64\Meudt.exe -acsi
C:\Windows\SysWOW64\PING.EXE
ping -n 2 127.0.0.1
Network
| Country | Destination | Domain | Proto |
| US | 45.66.159.41:2022 | tcp | |
| US | 45.66.159.41:2022 | tcp | |
| US | 45.66.159.41:2022 | tcp | |
| US | 45.66.159.41:2022 | tcp | |
| US | 45.66.159.41:2022 | tcp |
Files
memory/2180-0-0x0000000000400000-0x0000000000529000-memory.dmp
memory/2180-1-0x0000000000400000-0x0000000000529000-memory.dmp
memory/2180-2-0x0000000000400000-0x0000000000529000-memory.dmp
memory/2180-5-0x0000000010000000-0x00000000101BA000-memory.dmp
memory/2180-7-0x0000000010000000-0x00000000101BA000-memory.dmp
memory/2180-6-0x0000000010000000-0x00000000101BA000-memory.dmp
memory/2180-3-0x0000000010000000-0x00000000101BA000-memory.dmp
C:\Windows\SysWOW64\Meudt.exe
| MD5 | 2d78d99e16a187825a20f9fddf2e66e3 |
| SHA1 | d8fa6df2f929f40d564395335dd19dbe67b4138c |
| SHA256 | ce73bb13f6e878b1752594ba119c3f4a721ef2cb36ea4e26db13d16bcf181a66 |
| SHA512 | b28eb669facdbe958dbada89d5c64e956c91fb1952cdba797a43a813b475817f6d3ccd8c2ea835acd2d499d6e8c1e2f9b455428f1d85eb4f06aeef0f80a5080c |
memory/1912-11-0x0000000000400000-0x0000000000529000-memory.dmp
memory/1912-12-0x0000000000400000-0x0000000000529000-memory.dmp
memory/1912-13-0x0000000000400000-0x0000000000529000-memory.dmp
memory/2180-21-0x0000000000400000-0x0000000000529000-memory.dmp
memory/2180-22-0x0000000010000000-0x00000000101BA000-memory.dmp
memory/2700-24-0x0000000000400000-0x0000000000529000-memory.dmp
memory/1912-26-0x0000000000400000-0x0000000000529000-memory.dmp
memory/2700-27-0x0000000000400000-0x0000000000529000-memory.dmp
memory/2700-28-0x0000000000400000-0x0000000000529000-memory.dmp
memory/2700-31-0x0000000010000000-0x00000000101BA000-memory.dmp
memory/2700-32-0x0000000010000000-0x00000000101BA000-memory.dmp
memory/2700-29-0x0000000010000000-0x00000000101BA000-memory.dmp
memory/2700-33-0x0000000010000000-0x00000000101BA000-memory.dmp
memory/2700-36-0x0000000010000000-0x00000000101BA000-memory.dmp
memory/2700-38-0x0000000010000000-0x00000000101BA000-memory.dmp
memory/2700-39-0x0000000000400000-0x0000000000529000-memory.dmp