Analysis
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max time kernel
150s -
max time network
151s -
platform
windows7_x64 -
resource
win7v20201028 -
submitted
26-02-2021 06:00
Static task
static1
Behavioral task
behavioral1
Sample
f7210e3233bcb64f07f95b0573e0a07b.exe
Resource
win7v20201028
General
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Target
f7210e3233bcb64f07f95b0573e0a07b.exe
-
Size
670KB
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MD5
f7210e3233bcb64f07f95b0573e0a07b
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SHA1
302884f77354287317b2492c28d385a1403489db
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SHA256
054174519f7a336d5e8e5fe6596b07cd507c9e146cc437f5d3798b6cf243504e
-
SHA512
62feea6301fb8dec7a648be66827237671a1ed8b2fc78feb67c4a0e47b6c6528056b113fdbd31bb53f31a5b0a130efcb21e9703294f224c609480821f02bd252
Malware Config
Extracted
nanocore
1.2.2.0
grace7705.ddns.net:7705
4b193573-4138-4219-99c3-ee230c07783f
-
activate_away_mode
true
-
backup_connection_host
grace7705.ddns.net
- backup_dns_server
-
buffer_size
65535
-
build_time
2020-11-30T04:32:39.205275236Z
-
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
true
-
connect_delay
4000
-
connection_port
7705
-
default_group
Hour Of Grace$$
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enable_debug_mode
true
-
gc_threshold
1.048576e+07
-
keep_alive_timeout
30000
-
keyboard_logging
false
-
lan_timeout
2500
-
max_packet_size
1.048576e+07
-
mutex
4b193573-4138-4219-99c3-ee230c07783f
-
mutex_timeout
5000
-
prevent_system_sleep
false
-
primary_connection_host
grace7705.ddns.net
- primary_dns_server
-
request_elevation
true
-
restart_delay
5000
-
run_delay
0
-
run_on_startup
true
-
set_critical_process
true
-
timeout_interval
5000
-
use_custom_dns_server
false
-
version
1.2.2.0
-
wan_timeout
8000
Signatures
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Processes:
f7210e3233bcb64f07f95b0573e0a07b.exedescription ioc process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA f7210e3233bcb64f07f95b0573e0a07b.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
f7210e3233bcb64f07f95b0573e0a07b.exedescription pid process target process PID 2008 set thread context of 412 2008 f7210e3233bcb64f07f95b0573e0a07b.exe f7210e3233bcb64f07f95b0573e0a07b.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 3 IoCs
Processes:
f7210e3233bcb64f07f95b0573e0a07b.exepid process 412 f7210e3233bcb64f07f95b0573e0a07b.exe 412 f7210e3233bcb64f07f95b0573e0a07b.exe 412 f7210e3233bcb64f07f95b0573e0a07b.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
f7210e3233bcb64f07f95b0573e0a07b.exepid process 412 f7210e3233bcb64f07f95b0573e0a07b.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
f7210e3233bcb64f07f95b0573e0a07b.exedescription pid process Token: SeDebugPrivilege 412 f7210e3233bcb64f07f95b0573e0a07b.exe -
Suspicious use of WriteProcessMemory 13 IoCs
Processes:
f7210e3233bcb64f07f95b0573e0a07b.exedescription pid process target process PID 2008 wrote to memory of 784 2008 f7210e3233bcb64f07f95b0573e0a07b.exe schtasks.exe PID 2008 wrote to memory of 784 2008 f7210e3233bcb64f07f95b0573e0a07b.exe schtasks.exe PID 2008 wrote to memory of 784 2008 f7210e3233bcb64f07f95b0573e0a07b.exe schtasks.exe PID 2008 wrote to memory of 784 2008 f7210e3233bcb64f07f95b0573e0a07b.exe schtasks.exe PID 2008 wrote to memory of 412 2008 f7210e3233bcb64f07f95b0573e0a07b.exe f7210e3233bcb64f07f95b0573e0a07b.exe PID 2008 wrote to memory of 412 2008 f7210e3233bcb64f07f95b0573e0a07b.exe f7210e3233bcb64f07f95b0573e0a07b.exe PID 2008 wrote to memory of 412 2008 f7210e3233bcb64f07f95b0573e0a07b.exe f7210e3233bcb64f07f95b0573e0a07b.exe PID 2008 wrote to memory of 412 2008 f7210e3233bcb64f07f95b0573e0a07b.exe f7210e3233bcb64f07f95b0573e0a07b.exe PID 2008 wrote to memory of 412 2008 f7210e3233bcb64f07f95b0573e0a07b.exe f7210e3233bcb64f07f95b0573e0a07b.exe PID 2008 wrote to memory of 412 2008 f7210e3233bcb64f07f95b0573e0a07b.exe f7210e3233bcb64f07f95b0573e0a07b.exe PID 2008 wrote to memory of 412 2008 f7210e3233bcb64f07f95b0573e0a07b.exe f7210e3233bcb64f07f95b0573e0a07b.exe PID 2008 wrote to memory of 412 2008 f7210e3233bcb64f07f95b0573e0a07b.exe f7210e3233bcb64f07f95b0573e0a07b.exe PID 2008 wrote to memory of 412 2008 f7210e3233bcb64f07f95b0573e0a07b.exe f7210e3233bcb64f07f95b0573e0a07b.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\f7210e3233bcb64f07f95b0573e0a07b.exe"C:\Users\Admin\AppData\Local\Temp\f7210e3233bcb64f07f95b0573e0a07b.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\LLzCWOr" /XML "C:\Users\Admin\AppData\Local\Temp\tmpEA4F.tmp"2⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\f7210e3233bcb64f07f95b0573e0a07b.exe"{path}"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\tmpEA4F.tmpMD5
2f441899f3c9b72285c415b4ab771cde
SHA16311057b684fe14838dc72715f88abd789f4ea71
SHA2568a295521375a9d24175cbe6483fc06f098ee559fb856be609164e0f7a0997f53
SHA512db28b8685a839ff1f7153d9cbe35bcd7a8c1d80a1acd07d667d9b2bc3c2c49d24d35c32ac843e85b290e463dffac37d87d558db19635aeec8e3eddaca912ebbc
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memory/412-7-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/412-8-0x000000000041E792-mapping.dmp
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memory/412-10-0x00000000005D0000-0x00000000005D1000-memory.dmpFilesize
4KB
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memory/784-5-0x0000000000000000-mapping.dmp
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memory/2008-2-0x0000000075EA1000-0x0000000075EA3000-memory.dmpFilesize
8KB
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memory/2008-3-0x0000000000A90000-0x0000000000A91000-memory.dmpFilesize
4KB
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memory/2008-4-0x0000000000A91000-0x0000000000A92000-memory.dmpFilesize
4KB