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: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
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
win7-20231215-en
Max time kernel
118s
Max time network
152s
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 3044 set thread context of 2832 | 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 "PCI Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmp80B4.tmp"
Network
| Country | Destination | Domain | Proto |
| VN | 103.167.90.225:4251 | tcp |
Files
memory/3044-0-0x0000000001100000-0x000000000119A000-memory.dmp
memory/3044-1-0x0000000074C50000-0x000000007533E000-memory.dmp
memory/3044-2-0x0000000004FC0000-0x0000000005000000-memory.dmp
memory/3044-3-0x00000000005B0000-0x00000000005C8000-memory.dmp
memory/3044-4-0x00000000005D0000-0x00000000005D8000-memory.dmp
memory/3044-5-0x00000000005E0000-0x00000000005EC000-memory.dmp
memory/3044-6-0x0000000004F10000-0x0000000004F84000-memory.dmp
memory/2832-7-0x0000000000400000-0x0000000000438000-memory.dmp
memory/2832-9-0x0000000000400000-0x0000000000438000-memory.dmp
memory/2832-11-0x0000000000400000-0x0000000000438000-memory.dmp
memory/2832-13-0x0000000000400000-0x0000000000438000-memory.dmp
memory/2832-15-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
memory/2832-17-0x0000000000400000-0x0000000000438000-memory.dmp
memory/3044-20-0x0000000074C50000-0x000000007533E000-memory.dmp
memory/2832-19-0x0000000000400000-0x0000000000438000-memory.dmp
memory/2832-22-0x0000000000400000-0x0000000000438000-memory.dmp
memory/2832-23-0x0000000074560000-0x0000000074C4E000-memory.dmp
memory/2832-24-0x0000000004F00000-0x0000000004F40000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\tmp80B4.tmp
| MD5 | 42f7159e831591530fb8cdd62d4650a6 |
| SHA1 | 5d951d429a25957ca5fc3be282774f148e2f4f81 |
| SHA256 | aac9dd0d2fd0398d7958c31af596794180e27ba287868cb762878fb470da3cc8 |
| SHA512 | 8439116c6be44e4d1575ea62a7062951605d47af636eb9c292a7e671ebbeee23d14dbb0dae769e87a3ce11877bf41572f7e21a75a0015dbf9d3dfa8b8cc68bbc |
memory/2832-29-0x0000000000490000-0x000000000049A000-memory.dmp
memory/2832-30-0x00000000005B0000-0x00000000005CE000-memory.dmp
memory/2832-31-0x00000000004A0000-0x00000000004AA000-memory.dmp
memory/2832-34-0x0000000000630000-0x0000000000642000-memory.dmp
memory/2832-35-0x0000000000650000-0x000000000066A000-memory.dmp
memory/2832-36-0x0000000000AC0000-0x0000000000ACE000-memory.dmp
memory/2832-37-0x0000000000C50000-0x0000000000C62000-memory.dmp
memory/2832-38-0x0000000000C70000-0x0000000000C7C000-memory.dmp
memory/2832-39-0x0000000000CC0000-0x0000000000CCE000-memory.dmp
memory/2832-40-0x0000000000CD0000-0x0000000000CE4000-memory.dmp
memory/2832-41-0x0000000000CE0000-0x0000000000CF0000-memory.dmp
memory/2832-42-0x0000000000CF0000-0x0000000000D04000-memory.dmp
memory/2832-43-0x0000000000D00000-0x0000000000D0E000-memory.dmp
memory/2832-44-0x0000000000FB0000-0x0000000000FDE000-memory.dmp
memory/2832-45-0x0000000000D60000-0x0000000000D74000-memory.dmp
memory/2832-47-0x0000000074560000-0x0000000074C4E000-memory.dmp
memory/2832-48-0x0000000004F00000-0x0000000004F40000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-01-26 11:16
Reported
2024-01-26 11:18
Platform
win10v2004-20231222-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 2240 set thread context of 1616 | 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 |
| 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 |
| 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:\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 "SMTP Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmp80B9.tmp"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 13.86.106.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 173.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 4.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 133.211.185.52.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 | 15.164.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 217.135.221.88.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 29.243.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 187.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 170.117.168.52.in-addr.arpa | udp |
Files
memory/2240-0-0x0000000000870000-0x000000000090A000-memory.dmp
memory/2240-1-0x0000000074760000-0x0000000074F10000-memory.dmp
memory/2240-2-0x00000000059B0000-0x0000000005F54000-memory.dmp
memory/2240-3-0x0000000005320000-0x00000000053B2000-memory.dmp
memory/2240-4-0x00000000052C0000-0x00000000052D0000-memory.dmp
memory/2240-5-0x0000000005310000-0x000000000531A000-memory.dmp
memory/2240-6-0x0000000005670000-0x0000000005688000-memory.dmp
memory/2240-7-0x00000000065D0000-0x00000000065D8000-memory.dmp
memory/2240-8-0x0000000006700000-0x000000000670C000-memory.dmp
memory/2240-9-0x00000000069C0000-0x0000000006A34000-memory.dmp
memory/2240-10-0x0000000008FF0000-0x000000000908C000-memory.dmp
memory/1616-11-0x0000000000400000-0x0000000000438000-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/1616-15-0x0000000074760000-0x0000000074F10000-memory.dmp
memory/2240-14-0x0000000074760000-0x0000000074F10000-memory.dmp
memory/1616-16-0x0000000005750000-0x0000000005760000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\tmp80B9.tmp
| MD5 | 42f7159e831591530fb8cdd62d4650a6 |
| SHA1 | 5d951d429a25957ca5fc3be282774f148e2f4f81 |
| SHA256 | aac9dd0d2fd0398d7958c31af596794180e27ba287868cb762878fb470da3cc8 |
| SHA512 | 8439116c6be44e4d1575ea62a7062951605d47af636eb9c292a7e671ebbeee23d14dbb0dae769e87a3ce11877bf41572f7e21a75a0015dbf9d3dfa8b8cc68bbc |
memory/1616-21-0x0000000005580000-0x000000000558A000-memory.dmp
memory/1616-23-0x0000000006710000-0x000000000671A000-memory.dmp
memory/1616-22-0x00000000065F0000-0x000000000660E000-memory.dmp
memory/1616-26-0x0000000006D30000-0x0000000006D42000-memory.dmp
memory/1616-27-0x0000000006D40000-0x0000000006D5A000-memory.dmp
memory/1616-28-0x0000000006D70000-0x0000000006D7E000-memory.dmp
memory/1616-29-0x0000000006D80000-0x0000000006D92000-memory.dmp
memory/1616-30-0x0000000006D90000-0x0000000006D9C000-memory.dmp
memory/1616-31-0x0000000006DA0000-0x0000000006DAE000-memory.dmp
memory/1616-32-0x0000000006DB0000-0x0000000006DC4000-memory.dmp
memory/1616-33-0x0000000006DC0000-0x0000000006DD0000-memory.dmp
memory/1616-34-0x0000000006DE0000-0x0000000006DF4000-memory.dmp
memory/1616-35-0x0000000006E00000-0x0000000006E0E000-memory.dmp
memory/1616-36-0x0000000006E10000-0x0000000006E3E000-memory.dmp
memory/1616-37-0x0000000006E40000-0x0000000006E54000-memory.dmp
memory/1616-38-0x0000000007030000-0x0000000007096000-memory.dmp
memory/1616-40-0x0000000074760000-0x0000000074F10000-memory.dmp
memory/1616-41-0x0000000005750000-0x0000000005760000-memory.dmp