Resubmissions
27-07-2021 13:05
210727-834shk3gfs 10Analysis
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max time kernel
131s -
max time network
182s -
platform
windows7_x64 -
resource
win7v20210410 -
submitted
27-07-2021 13:05
Static task
static1
Behavioral task
behavioral1
Sample
nputty.exe
Resource
win7v20210410
General
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Target
nputty.exe
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Size
626KB
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MD5
2d5e1b62b58404ac5040f7454b9a73fe
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SHA1
9b90698444e1abd3cfc04959ebaf8ec7c0b5bcec
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SHA256
871e94eda4712d5e5549cdb71e84f794baa7fe2b52ba191ecbbcd576549fd94d
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SHA512
cdde2968985db5e7532f23079f109de00ff70005ab0666662ab86e63bd8dee85c3425ac93d6c225d559963a0e5ad576131fd58274bd2c017479821c4c830a66f
Malware Config
Extracted
nanocore
1.2.2.0
asweee.jumpingcrab.com:8234
tryweaswweee.ydns.eu:8234
0bb207a5-6f92-4ff1-abb5-35e0dc25fe5d
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activate_away_mode
true
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backup_connection_host
tryweaswweee.ydns.eu
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backup_dns_server
tryweaswweee.ydns.eu
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buffer_size
65535
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build_time
2021-05-02T14:48:34.703881636Z
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bypass_user_account_control
false
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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
8234
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default_group
AUGUST
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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
0bb207a5-6f92-4ff1-abb5-35e0dc25fe5d
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mutex_timeout
5000
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prevent_system_sleep
false
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primary_connection_host
asweee.jumpingcrab.com
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primary_dns_server
asweee.jumpingcrab.com
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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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Processes:
nputty.exedescription ioc process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA nputty.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
nputty.exedescription pid process target process PID 1308 set thread context of 1628 1308 nputty.exe nputty.exe -
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 5 IoCs
Processes:
nputty.exenputty.exepid process 1308 nputty.exe 1308 nputty.exe 1628 nputty.exe 1628 nputty.exe 1628 nputty.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
nputty.exepid process 1628 nputty.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
nputty.exenputty.exedescription pid process Token: SeDebugPrivilege 1308 nputty.exe Token: SeDebugPrivilege 1628 nputty.exe -
Suspicious use of WriteProcessMemory 13 IoCs
Processes:
nputty.exenputty.exedescription pid process target process PID 1308 wrote to memory of 1628 1308 nputty.exe nputty.exe PID 1308 wrote to memory of 1628 1308 nputty.exe nputty.exe PID 1308 wrote to memory of 1628 1308 nputty.exe nputty.exe PID 1308 wrote to memory of 1628 1308 nputty.exe nputty.exe PID 1308 wrote to memory of 1628 1308 nputty.exe nputty.exe PID 1308 wrote to memory of 1628 1308 nputty.exe nputty.exe PID 1308 wrote to memory of 1628 1308 nputty.exe nputty.exe PID 1308 wrote to memory of 1628 1308 nputty.exe nputty.exe PID 1308 wrote to memory of 1628 1308 nputty.exe nputty.exe PID 1628 wrote to memory of 568 1628 nputty.exe schtasks.exe PID 1628 wrote to memory of 568 1628 nputty.exe schtasks.exe PID 1628 wrote to memory of 568 1628 nputty.exe schtasks.exe PID 1628 wrote to memory of 568 1628 nputty.exe schtasks.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\nputty.exe"C:\Users\Admin\AppData\Local\Temp\nputty.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\nputty.exeC:\Users\Admin\AppData\Local\Temp\nputty.exe2⤵
- Checks whether UAC is enabled
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"schtasks.exe" /create /f /tn "LAN Host" /xml "C:\Users\Admin\AppData\Local\Temp\tmp18ED.tmp"3⤵
- Creates scheduled task(s)
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\tmp18ED.tmpMD5
3669665290f3b6dc2cfa327c5d9e2917
SHA1ed0cfb5f78a8236b34b2dbee9e07944b8d97c266
SHA256682bd09022357cc59c9309105c1d5c54662aeb4028d3c57578b6f67f962fa442
SHA512a0138ef16284e9d2bf8de5a0a252eaee29040117780498d221c35820bd64cc2739d2679b622c4842dc35af6393bafe7803944027368fb001cf47efccf547215f
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memory/568-74-0x0000000000000000-mapping.dmp
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memory/1308-68-0x00000000050E0000-0x000000000515B000-memory.dmpFilesize
492KB
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memory/1308-60-0x0000000000D00000-0x0000000000D01000-memory.dmpFilesize
4KB
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memory/1308-69-0x0000000004CF5000-0x0000000004D06000-memory.dmpFilesize
68KB
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memory/1308-63-0x00000000042F0000-0x000000000435B000-memory.dmpFilesize
428KB
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memory/1308-62-0x0000000004CF0000-0x0000000004CF1000-memory.dmpFilesize
4KB
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memory/1628-70-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/1628-71-0x000000000041E792-mapping.dmp
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memory/1628-72-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/1628-76-0x00000000003D0000-0x00000000003D5000-memory.dmpFilesize
20KB
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memory/1628-77-0x00000000003E0000-0x00000000003F9000-memory.dmpFilesize
100KB
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memory/1628-78-0x0000000000480000-0x0000000000483000-memory.dmpFilesize
12KB
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memory/1628-79-0x0000000004D80000-0x0000000004D81000-memory.dmpFilesize
4KB