Analysis
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max time kernel
86s -
max time network
151s -
platform
windows7_x64 -
resource
win7v20201028 -
submitted
26-02-2021 08:13
Static task
static1
Behavioral task
behavioral1
Sample
f7210e3233bcb64f07f95b0573e0a07b.exe
Resource
win7v20201028
General
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Target
f7210e3233bcb64f07f95b0573e0a07b.exe
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Size
670KB
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MD5
f7210e3233bcb64f07f95b0573e0a07b
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SHA1
302884f77354287317b2492c28d385a1403489db
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SHA256
054174519f7a336d5e8e5fe6596b07cd507c9e146cc437f5d3798b6cf243504e
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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
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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
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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
-
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 1832 set thread context of 1764 1832 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 4 IoCs
Processes:
f7210e3233bcb64f07f95b0573e0a07b.exepid process 1764 f7210e3233bcb64f07f95b0573e0a07b.exe 1764 f7210e3233bcb64f07f95b0573e0a07b.exe 1764 f7210e3233bcb64f07f95b0573e0a07b.exe 1764 f7210e3233bcb64f07f95b0573e0a07b.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
f7210e3233bcb64f07f95b0573e0a07b.exepid process 1764 f7210e3233bcb64f07f95b0573e0a07b.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
f7210e3233bcb64f07f95b0573e0a07b.exedescription pid process Token: SeDebugPrivilege 1764 f7210e3233bcb64f07f95b0573e0a07b.exe -
Suspicious use of WriteProcessMemory 13 IoCs
Processes:
f7210e3233bcb64f07f95b0573e0a07b.exedescription pid process target process PID 1832 wrote to memory of 608 1832 f7210e3233bcb64f07f95b0573e0a07b.exe schtasks.exe PID 1832 wrote to memory of 608 1832 f7210e3233bcb64f07f95b0573e0a07b.exe schtasks.exe PID 1832 wrote to memory of 608 1832 f7210e3233bcb64f07f95b0573e0a07b.exe schtasks.exe PID 1832 wrote to memory of 608 1832 f7210e3233bcb64f07f95b0573e0a07b.exe schtasks.exe PID 1832 wrote to memory of 1764 1832 f7210e3233bcb64f07f95b0573e0a07b.exe f7210e3233bcb64f07f95b0573e0a07b.exe PID 1832 wrote to memory of 1764 1832 f7210e3233bcb64f07f95b0573e0a07b.exe f7210e3233bcb64f07f95b0573e0a07b.exe PID 1832 wrote to memory of 1764 1832 f7210e3233bcb64f07f95b0573e0a07b.exe f7210e3233bcb64f07f95b0573e0a07b.exe PID 1832 wrote to memory of 1764 1832 f7210e3233bcb64f07f95b0573e0a07b.exe f7210e3233bcb64f07f95b0573e0a07b.exe PID 1832 wrote to memory of 1764 1832 f7210e3233bcb64f07f95b0573e0a07b.exe f7210e3233bcb64f07f95b0573e0a07b.exe PID 1832 wrote to memory of 1764 1832 f7210e3233bcb64f07f95b0573e0a07b.exe f7210e3233bcb64f07f95b0573e0a07b.exe PID 1832 wrote to memory of 1764 1832 f7210e3233bcb64f07f95b0573e0a07b.exe f7210e3233bcb64f07f95b0573e0a07b.exe PID 1832 wrote to memory of 1764 1832 f7210e3233bcb64f07f95b0573e0a07b.exe f7210e3233bcb64f07f95b0573e0a07b.exe PID 1832 wrote to memory of 1764 1832 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
PID:1832 -
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\LLzCWOr" /XML "C:\Users\Admin\AppData\Local\Temp\tmp5ACD.tmp"2⤵
- Creates scheduled task(s)
PID:608 -
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
PID:1764
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Temp\tmp5ACD.tmpMD5
196d75cdc44b41c6824401ee226b34c5
SHA17645e03272ba94b7fa7d299c67fd5d29f218a390
SHA2567a842896a466651420de485b0cc01cb36842e8022fea040a6033ba7c510f2002
SHA512d66ddd042785c305a91d3663c413db0a33f94d94952e000df4c3e239b9db7541362ad04cbf5f076dad4241c19db92831674eedffc960e55a422238392d6ddd5f
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memory/608-5-0x0000000000000000-mapping.dmp
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memory/1764-8-0x000000000041E792-mapping.dmp
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memory/1764-7-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/1764-10-0x00000000004A0000-0x00000000004A1000-memory.dmpFilesize
4KB
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memory/1832-2-0x0000000076191000-0x0000000076193000-memory.dmpFilesize
8KB
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memory/1832-3-0x0000000001D30000-0x0000000001D31000-memory.dmpFilesize
4KB
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memory/1832-4-0x0000000001D31000-0x0000000001D32000-memory.dmpFilesize
4KB