Analysis
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max time kernel
114s -
max time network
150s -
platform
windows10_x64 -
resource
win10v20201028 -
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 4640 set thread context of 516 4640 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 7 IoCs
Processes:
uqoYt8EFEWQXAne.exeuqoYt8EFEWQXAne.exepid process 4640 uqoYt8EFEWQXAne.exe 516 uqoYt8EFEWQXAne.exe 516 uqoYt8EFEWQXAne.exe 516 uqoYt8EFEWQXAne.exe 516 uqoYt8EFEWQXAne.exe 516 uqoYt8EFEWQXAne.exe 516 uqoYt8EFEWQXAne.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
uqoYt8EFEWQXAne.exepid process 516 uqoYt8EFEWQXAne.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
uqoYt8EFEWQXAne.exeuqoYt8EFEWQXAne.exedescription pid process Token: SeDebugPrivilege 4640 uqoYt8EFEWQXAne.exe Token: SeDebugPrivilege 516 uqoYt8EFEWQXAne.exe -
Suspicious use of WriteProcessMemory 11 IoCs
Processes:
uqoYt8EFEWQXAne.exedescription pid process target process PID 4640 wrote to memory of 3304 4640 uqoYt8EFEWQXAne.exe schtasks.exe PID 4640 wrote to memory of 3304 4640 uqoYt8EFEWQXAne.exe schtasks.exe PID 4640 wrote to memory of 3304 4640 uqoYt8EFEWQXAne.exe schtasks.exe PID 4640 wrote to memory of 516 4640 uqoYt8EFEWQXAne.exe uqoYt8EFEWQXAne.exe PID 4640 wrote to memory of 516 4640 uqoYt8EFEWQXAne.exe uqoYt8EFEWQXAne.exe PID 4640 wrote to memory of 516 4640 uqoYt8EFEWQXAne.exe uqoYt8EFEWQXAne.exe PID 4640 wrote to memory of 516 4640 uqoYt8EFEWQXAne.exe uqoYt8EFEWQXAne.exe PID 4640 wrote to memory of 516 4640 uqoYt8EFEWQXAne.exe uqoYt8EFEWQXAne.exe PID 4640 wrote to memory of 516 4640 uqoYt8EFEWQXAne.exe uqoYt8EFEWQXAne.exe PID 4640 wrote to memory of 516 4640 uqoYt8EFEWQXAne.exe uqoYt8EFEWQXAne.exe PID 4640 wrote to memory of 516 4640 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\tmpF260.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⤵
- 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\tmpF260.tmpMD5
342825acc51ed06f8ddbe20d10766d55
SHA1f07d0923c09f7cc92ad09277892ac70614a06118
SHA256646d5fae2bb90634fe1c22d0fb7d5f96ca96a11c261f0441ba6d91c3abe301ea
SHA5121b2e3686af4c6391bcccbf7c79ac678953b7a034a9824ffbacfb6880bf5d8ea89d6062f39a2ac5ae37a36eceacc1542f5c59f559ef4736b4355a244a6cab24d9
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memory/516-33-0x0000000006870000-0x0000000006877000-memory.dmpFilesize
28KB
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memory/516-32-0x0000000006860000-0x000000000686C000-memory.dmpFilesize
48KB
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memory/516-18-0x0000000073D60000-0x000000007444E000-memory.dmpFilesize
6.9MB
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memory/516-25-0x0000000005570000-0x0000000005575000-memory.dmpFilesize
20KB
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memory/516-39-0x00000000068E0000-0x0000000006909000-memory.dmpFilesize
164KB
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memory/516-38-0x00000000068D0000-0x00000000068DA000-memory.dmpFilesize
40KB
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memory/516-37-0x00000000068B0000-0x00000000068BF000-memory.dmpFilesize
60KB
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memory/516-36-0x00000000068A0000-0x00000000068A9000-memory.dmpFilesize
36KB
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memory/516-35-0x0000000006890000-0x000000000689D000-memory.dmpFilesize
52KB
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memory/516-34-0x0000000006880000-0x0000000006886000-memory.dmpFilesize
24KB
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memory/516-26-0x00000000059E0000-0x00000000059F9000-memory.dmpFilesize
100KB
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memory/516-31-0x0000000006840000-0x0000000006846000-memory.dmpFilesize
24KB
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memory/516-16-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/516-17-0x000000000041E792-mapping.dmp
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memory/516-30-0x0000000006810000-0x0000000006825000-memory.dmpFilesize
84KB
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memory/516-40-0x0000000006920000-0x000000000692F000-memory.dmpFilesize
60KB
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memory/516-29-0x0000000006800000-0x000000000680D000-memory.dmpFilesize
52KB
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memory/516-27-0x0000000005590000-0x0000000005593000-memory.dmpFilesize
12KB
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memory/516-28-0x0000000005750000-0x0000000005751000-memory.dmpFilesize
4KB
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memory/3304-14-0x0000000000000000-mapping.dmp
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memory/4640-5-0x0000000004970000-0x0000000004971000-memory.dmpFilesize
4KB
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memory/4640-6-0x0000000004F80000-0x0000000004F81000-memory.dmpFilesize
4KB
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memory/4640-3-0x0000000000100000-0x0000000000101000-memory.dmpFilesize
4KB
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memory/4640-2-0x0000000073D60000-0x000000007444E000-memory.dmpFilesize
6.9MB
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memory/4640-13-0x0000000008020000-0x0000000008021000-memory.dmpFilesize
4KB
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memory/4640-12-0x00000000067E0000-0x000000000683B000-memory.dmpFilesize
364KB
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memory/4640-11-0x0000000004D80000-0x0000000004D83000-memory.dmpFilesize
12KB
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memory/4640-8-0x0000000004A30000-0x0000000004A31000-memory.dmpFilesize
4KB
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memory/4640-10-0x0000000004C80000-0x0000000004C81000-memory.dmpFilesize
4KB
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memory/4640-9-0x0000000004A60000-0x0000000004A61000-memory.dmpFilesize
4KB
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memory/4640-7-0x0000000004B20000-0x0000000004B21000-memory.dmpFilesize
4KB