Analysis
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max time kernel
116s -
max time network
149s -
platform
windows7_x64 -
resource
win7v20201028 -
submitted
23-02-2021 12:53
Static task
static1
Behavioral task
behavioral1
Sample
uqoYt8EFEWQXAne.exe
Resource
win7v20201028
General
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Target
uqoYt8EFEWQXAne.exe
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Size
515KB
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MD5
c415765ef678428f502b101039b7d495
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SHA1
e5458ff58b98401d715a68a67afabdefaaf2edc3
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SHA256
c024e649afaafd4d1a1ebc2c5a2c457eecd2b5994c2b78e32312eb5289b5c093
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SHA512
859deb240d2e8ee1b5cc057aa63b0f8d49fec83619b4c346821b09efa5b9fca01fb85396045658860468107f9a19a8710db85c2c7b299351f6225c64034f2d8c
Malware Config
Extracted
nanocore
1.2.2.0
185.239.242.243:2010
127.0.0.1:2010
9e8dc517-1111-49c1-9ace-3da1a887c465
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activate_away_mode
true
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backup_connection_host
127.0.0.1
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backup_dns_server
8.8.4.4
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buffer_size
65535
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build_time
2020-12-04T23:48:40.197283836Z
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bypass_user_account_control
true
- bypass_user_account_control_data
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clear_access_control
true
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clear_zone_identifier
false
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connect_delay
4000
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connection_port
2010
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default_group
ozil pc
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enable_debug_mode
true
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gc_threshold
1.048576e+07
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keep_alive_timeout
30000
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keyboard_logging
false
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lan_timeout
2500
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max_packet_size
1.048576e+07
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mutex
9e8dc517-1111-49c1-9ace-3da1a887c465
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mutex_timeout
5000
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prevent_system_sleep
false
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primary_connection_host
185.239.242.243
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primary_dns_server
8.8.8.8
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request_elevation
true
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restart_delay
5000
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run_delay
0
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run_on_startup
true
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set_critical_process
true
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timeout_interval
5000
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use_custom_dns_server
false
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version
1.2.2.0
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wan_timeout
8000
Signatures
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Looks for VirtualBox Guest Additions in registry 2 TTPs
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Looks for VMWare Tools registry key 2 TTPs
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Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
Processes:
uqoYt8EFEWQXAne.exedescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion uqoYt8EFEWQXAne.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion uqoYt8EFEWQXAne.exe -
Processes:
uqoYt8EFEWQXAne.exedescription ioc process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA uqoYt8EFEWQXAne.exe -
Maps connected drives based on registry 3 TTPs 2 IoCs
Disk information is often read in order to detect sandboxing environments.
Processes:
uqoYt8EFEWQXAne.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum uqoYt8EFEWQXAne.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0 uqoYt8EFEWQXAne.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
uqoYt8EFEWQXAne.exedescription pid process target process PID 1904 set thread context of 664 1904 uqoYt8EFEWQXAne.exe uqoYt8EFEWQXAne.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Suspicious behavior: EnumeratesProcesses 6 IoCs
Processes:
uqoYt8EFEWQXAne.exeuqoYt8EFEWQXAne.exepid process 1904 uqoYt8EFEWQXAne.exe 1904 uqoYt8EFEWQXAne.exe 664 uqoYt8EFEWQXAne.exe 664 uqoYt8EFEWQXAne.exe 664 uqoYt8EFEWQXAne.exe 664 uqoYt8EFEWQXAne.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
uqoYt8EFEWQXAne.exepid process 664 uqoYt8EFEWQXAne.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
uqoYt8EFEWQXAne.exeuqoYt8EFEWQXAne.exedescription pid process Token: SeDebugPrivilege 1904 uqoYt8EFEWQXAne.exe Token: SeDebugPrivilege 664 uqoYt8EFEWQXAne.exe -
Suspicious use of WriteProcessMemory 17 IoCs
Processes:
uqoYt8EFEWQXAne.exedescription pid process target process PID 1904 wrote to memory of 680 1904 uqoYt8EFEWQXAne.exe schtasks.exe PID 1904 wrote to memory of 680 1904 uqoYt8EFEWQXAne.exe schtasks.exe PID 1904 wrote to memory of 680 1904 uqoYt8EFEWQXAne.exe schtasks.exe PID 1904 wrote to memory of 680 1904 uqoYt8EFEWQXAne.exe schtasks.exe PID 1904 wrote to memory of 328 1904 uqoYt8EFEWQXAne.exe uqoYt8EFEWQXAne.exe PID 1904 wrote to memory of 328 1904 uqoYt8EFEWQXAne.exe uqoYt8EFEWQXAne.exe PID 1904 wrote to memory of 328 1904 uqoYt8EFEWQXAne.exe uqoYt8EFEWQXAne.exe PID 1904 wrote to memory of 328 1904 uqoYt8EFEWQXAne.exe uqoYt8EFEWQXAne.exe PID 1904 wrote to memory of 664 1904 uqoYt8EFEWQXAne.exe uqoYt8EFEWQXAne.exe PID 1904 wrote to memory of 664 1904 uqoYt8EFEWQXAne.exe uqoYt8EFEWQXAne.exe PID 1904 wrote to memory of 664 1904 uqoYt8EFEWQXAne.exe uqoYt8EFEWQXAne.exe PID 1904 wrote to memory of 664 1904 uqoYt8EFEWQXAne.exe uqoYt8EFEWQXAne.exe PID 1904 wrote to memory of 664 1904 uqoYt8EFEWQXAne.exe uqoYt8EFEWQXAne.exe PID 1904 wrote to memory of 664 1904 uqoYt8EFEWQXAne.exe uqoYt8EFEWQXAne.exe PID 1904 wrote to memory of 664 1904 uqoYt8EFEWQXAne.exe uqoYt8EFEWQXAne.exe PID 1904 wrote to memory of 664 1904 uqoYt8EFEWQXAne.exe uqoYt8EFEWQXAne.exe PID 1904 wrote to memory of 664 1904 uqoYt8EFEWQXAne.exe uqoYt8EFEWQXAne.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\uqoYt8EFEWQXAne.exe"C:\Users\Admin\AppData\Local\Temp\uqoYt8EFEWQXAne.exe"1⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\krPtdhRIieabB" /XML "C:\Users\Admin\AppData\Local\Temp\tmpAED5.tmp"2⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\uqoYt8EFEWQXAne.exe"C:\Users\Admin\AppData\Local\Temp\uqoYt8EFEWQXAne.exe"2⤵
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C:\Users\Admin\AppData\Local\Temp\uqoYt8EFEWQXAne.exe"C:\Users\Admin\AppData\Local\Temp\uqoYt8EFEWQXAne.exe"2⤵
- Checks whether UAC is enabled
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\tmpAED5.tmpMD5
e21afaa184fdfbead83b913f88c40871
SHA113e98970affef600e11a09ce2fd9c362c7bd1eaa
SHA256cb84eaee6184bbda0b7e42ec72bf336315249e0c06dc170f987b40eec88ea096
SHA512d0c44eebe1426279a18e30a7e8d545407bf27f7f55d8e21e7e425b8e2f65178289a8ee50139c9f997a237e5e71f6b75358555339727a5638dde075c813cedce5
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memory/664-16-0x0000000000A70000-0x0000000000A89000-memory.dmpFilesize
100KB
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memory/664-24-0x0000000004B60000-0x0000000004B66000-memory.dmpFilesize
24KB
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memory/664-18-0x0000000004AB0000-0x0000000004AB1000-memory.dmpFilesize
4KB
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memory/664-19-0x0000000000A90000-0x0000000000A9D000-memory.dmpFilesize
52KB
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memory/664-17-0x00000000004E0000-0x00000000004E3000-memory.dmpFilesize
12KB
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memory/664-29-0x0000000004D40000-0x0000000004D69000-memory.dmpFilesize
164KB
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memory/664-11-0x000000000041E792-mapping.dmp
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memory/664-10-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/664-12-0x0000000074320000-0x0000000074A0E000-memory.dmpFilesize
6.9MB
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memory/664-13-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/664-15-0x00000000004D0000-0x00000000004D5000-memory.dmpFilesize
20KB
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memory/664-28-0x0000000004C20000-0x0000000004C2A000-memory.dmpFilesize
40KB
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memory/664-30-0x0000000004D70000-0x0000000004D7F000-memory.dmpFilesize
60KB
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memory/664-27-0x0000000004C10000-0x0000000004C1F000-memory.dmpFilesize
60KB
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memory/664-26-0x0000000004BC0000-0x0000000004BC9000-memory.dmpFilesize
36KB
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memory/664-20-0x0000000000C00000-0x0000000000C15000-memory.dmpFilesize
84KB
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memory/664-21-0x0000000000BB0000-0x0000000000BB6000-memory.dmpFilesize
24KB
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memory/664-22-0x0000000000D20000-0x0000000000D2C000-memory.dmpFilesize
48KB
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memory/664-23-0x0000000000F60000-0x0000000000F67000-memory.dmpFilesize
28KB
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memory/664-25-0x0000000004B70000-0x0000000004B7D000-memory.dmpFilesize
52KB
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memory/680-8-0x0000000000000000-mapping.dmp
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memory/1904-5-0x0000000000DB0000-0x0000000000DB1000-memory.dmpFilesize
4KB
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memory/1904-7-0x0000000005B60000-0x0000000005BBB000-memory.dmpFilesize
364KB
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memory/1904-6-0x0000000000960000-0x0000000000963000-memory.dmpFilesize
12KB
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memory/1904-2-0x0000000074320000-0x0000000074A0E000-memory.dmpFilesize
6.9MB
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memory/1904-3-0x0000000000F70000-0x0000000000F71000-memory.dmpFilesize
4KB