Analysis Overview
SHA256
4ba298859e61cb9c39d9d4a4d556fe6357ce0901d5d4ac6f78e6e15ced75cccb
Threat Level: Known bad
The file gunzipped.exe was found to be: Known bad.
Malicious Activity Summary
NanoCore
Checks whether UAC is enabled
Suspicious use of SetThreadContext
Unsigned PE
Creates scheduled task(s)
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of WriteProcessMemory
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-01-26 11:16
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-01-26 11:16
Reported
2024-01-26 11:18
Platform
win7-20231129-en
Max time kernel
117s
Max time network
149s
Command Line
Signatures
NanoCore
Checks whether UAC is enabled
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA | C:\Users\Admin\AppData\Local\Temp\gunzipped.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 2268 set thread context of 2012 | N/A | C:\Users\Admin\AppData\Local\Temp\gunzipped.exe | C:\Users\Admin\AppData\Local\Temp\gunzipped.exe |
Creates scheduled task(s)
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\schtasks.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\gunzipped.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\gunzipped.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\gunzipped.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\gunzipped.exe | N/A |
Suspicious behavior: GetForegroundWindowSpam
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\gunzipped.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\gunzipped.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\gunzipped.exe
"C:\Users\Admin\AppData\Local\Temp\gunzipped.exe"
C:\Users\Admin\AppData\Local\Temp\gunzipped.exe
"C:\Users\Admin\AppData\Local\Temp\gunzipped.exe"
C:\Windows\SysWOW64\schtasks.exe
"schtasks.exe" /create /f /tn "TCP Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmp3524.tmp"
Network
| Country | Destination | Domain | Proto |
| VN | 103.167.90.225:4251 | tcp |
Files
memory/2268-1-0x0000000073FD0000-0x00000000746BE000-memory.dmp
memory/2268-0-0x00000000012F0000-0x000000000138A000-memory.dmp
memory/2268-2-0x00000000048D0000-0x0000000004910000-memory.dmp
memory/2268-3-0x0000000000450000-0x0000000000468000-memory.dmp
memory/2268-4-0x0000000000620000-0x0000000000628000-memory.dmp
memory/2268-5-0x0000000000630000-0x000000000063C000-memory.dmp
memory/2268-6-0x0000000005400000-0x0000000005474000-memory.dmp
memory/2012-7-0x0000000000400000-0x0000000000438000-memory.dmp
memory/2012-8-0x0000000000400000-0x0000000000438000-memory.dmp
memory/2012-9-0x0000000000400000-0x0000000000438000-memory.dmp
memory/2012-11-0x0000000000400000-0x0000000000438000-memory.dmp
memory/2012-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
memory/2012-16-0x0000000000400000-0x0000000000438000-memory.dmp
memory/2268-17-0x0000000073FD0000-0x00000000746BE000-memory.dmp
memory/2012-14-0x0000000000400000-0x0000000000438000-memory.dmp
memory/2012-19-0x0000000000400000-0x0000000000438000-memory.dmp
memory/2012-20-0x0000000073FD0000-0x00000000746BE000-memory.dmp
memory/2012-21-0x0000000000E80000-0x0000000000EC0000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\tmp3524.tmp
| MD5 | 42f7159e831591530fb8cdd62d4650a6 |
| SHA1 | 5d951d429a25957ca5fc3be282774f148e2f4f81 |
| SHA256 | aac9dd0d2fd0398d7958c31af596794180e27ba287868cb762878fb470da3cc8 |
| SHA512 | 8439116c6be44e4d1575ea62a7062951605d47af636eb9c292a7e671ebbeee23d14dbb0dae769e87a3ce11877bf41572f7e21a75a0015dbf9d3dfa8b8cc68bbc |
memory/2012-26-0x0000000000670000-0x000000000067A000-memory.dmp
memory/2012-28-0x00000000006B0000-0x00000000006BA000-memory.dmp
memory/2012-27-0x0000000000680000-0x000000000069E000-memory.dmp
memory/2012-31-0x0000000000A10000-0x0000000000A22000-memory.dmp
memory/2012-32-0x0000000000A20000-0x0000000000A3A000-memory.dmp
memory/2012-33-0x0000000000AD0000-0x0000000000ADE000-memory.dmp
memory/2012-34-0x0000000000B60000-0x0000000000B72000-memory.dmp
memory/2012-35-0x0000000000B80000-0x0000000000B8C000-memory.dmp
memory/2012-36-0x0000000000B90000-0x0000000000B9E000-memory.dmp
memory/2012-37-0x0000000000CC0000-0x0000000000CD4000-memory.dmp
memory/2012-38-0x0000000000CD0000-0x0000000000CE0000-memory.dmp
memory/2012-39-0x0000000000DE0000-0x0000000000DF4000-memory.dmp
memory/2012-40-0x0000000000E30000-0x0000000000E3E000-memory.dmp
memory/2012-41-0x00000000012A0000-0x00000000012CE000-memory.dmp
memory/2012-42-0x0000000000E50000-0x0000000000E64000-memory.dmp
memory/2012-44-0x0000000073FD0000-0x00000000746BE000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-01-26 11:16
Reported
2024-01-26 11:18
Platform
win10v2004-20231215-en
Max time kernel
145s
Max time network
149s
Command Line
Signatures
NanoCore
Checks whether UAC is enabled
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA | C:\Users\Admin\AppData\Local\Temp\gunzipped.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 4500 set thread context of 948 | N/A | C:\Users\Admin\AppData\Local\Temp\gunzipped.exe | C:\Users\Admin\AppData\Local\Temp\gunzipped.exe |
Creates scheduled task(s)
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\schtasks.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\gunzipped.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\gunzipped.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\gunzipped.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\gunzipped.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\gunzipped.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\gunzipped.exe | N/A |
Suspicious behavior: GetForegroundWindowSpam
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\gunzipped.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\gunzipped.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\gunzipped.exe
"C:\Users\Admin\AppData\Local\Temp\gunzipped.exe"
C:\Users\Admin\AppData\Local\Temp\gunzipped.exe
"C:\Users\Admin\AppData\Local\Temp\gunzipped.exe"
C:\Windows\SysWOW64\schtasks.exe
"schtasks.exe" /create /f /tn "WAN Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmp89B2.tmp"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 104.219.191.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 194.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 82.177.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 232.168.11.51.in-addr.arpa | udp |
| VN | 103.167.90.225:4251 | tcp | |
| US | 8.8.8.8:53 | 225.90.167.103.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 | 8.8.8.8:53 | 217.135.221.88.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 0.205.248.87.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 23.236.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 26.73.42.20.in-addr.arpa | udp |
Files
memory/4500-0-0x0000000000C40000-0x0000000000CDA000-memory.dmp
memory/4500-1-0x0000000074410000-0x0000000074BC0000-memory.dmp
memory/4500-2-0x0000000005BC0000-0x0000000006164000-memory.dmp
memory/4500-3-0x00000000056C0000-0x0000000005752000-memory.dmp
memory/4500-4-0x00000000058A0000-0x00000000058B0000-memory.dmp
memory/4500-5-0x0000000005870000-0x000000000587A000-memory.dmp
memory/4500-6-0x0000000005A40000-0x0000000005A58000-memory.dmp
memory/4500-7-0x0000000005BA0000-0x0000000005BA8000-memory.dmp
memory/4500-8-0x0000000005BB0000-0x0000000005BBC000-memory.dmp
memory/4500-9-0x0000000006DC0000-0x0000000006E34000-memory.dmp
memory/4500-10-0x00000000093F0000-0x000000000948C000-memory.dmp
memory/948-11-0x0000000000400000-0x0000000000438000-memory.dmp
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\gunzipped.exe.log
| MD5 | 8ec831f3e3a3f77e4a7b9cd32b48384c |
| SHA1 | d83f09fd87c5bd86e045873c231c14836e76a05c |
| SHA256 | 7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982 |
| SHA512 | 26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3 |
memory/4500-14-0x0000000074410000-0x0000000074BC0000-memory.dmp
memory/948-15-0x0000000074410000-0x0000000074BC0000-memory.dmp
memory/948-16-0x0000000005260000-0x0000000005270000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\tmp89B2.tmp
| MD5 | 42f7159e831591530fb8cdd62d4650a6 |
| SHA1 | 5d951d429a25957ca5fc3be282774f148e2f4f81 |
| SHA256 | aac9dd0d2fd0398d7958c31af596794180e27ba287868cb762878fb470da3cc8 |
| SHA512 | 8439116c6be44e4d1575ea62a7062951605d47af636eb9c292a7e671ebbeee23d14dbb0dae769e87a3ce11877bf41572f7e21a75a0015dbf9d3dfa8b8cc68bbc |
memory/948-21-0x0000000005230000-0x000000000523A000-memory.dmp
memory/948-22-0x0000000005240000-0x000000000525E000-memory.dmp
memory/948-23-0x0000000005590000-0x000000000559A000-memory.dmp
memory/948-26-0x00000000067D0000-0x00000000067E2000-memory.dmp
memory/948-27-0x00000000067E0000-0x00000000067FA000-memory.dmp
memory/948-28-0x0000000006810000-0x000000000681E000-memory.dmp
memory/948-29-0x0000000006820000-0x0000000006832000-memory.dmp
memory/948-30-0x0000000006830000-0x000000000683C000-memory.dmp
memory/948-31-0x0000000006840000-0x000000000684E000-memory.dmp
memory/948-32-0x0000000006850000-0x0000000006864000-memory.dmp
memory/948-33-0x0000000006860000-0x0000000006870000-memory.dmp
memory/948-34-0x0000000006880000-0x0000000006894000-memory.dmp
memory/948-35-0x00000000068A0000-0x00000000068AE000-memory.dmp
memory/948-36-0x00000000068B0000-0x00000000068DE000-memory.dmp
memory/948-37-0x00000000068E0000-0x00000000068F4000-memory.dmp
memory/948-38-0x0000000006AC0000-0x0000000006B26000-memory.dmp
memory/948-40-0x0000000074410000-0x0000000074BC0000-memory.dmp