Analysis
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max time kernel
142s -
max time network
161s -
platform
windows10-2004_x64 -
resource
win10v2004-20231127-en -
resource tags
arch:x64arch:x86image:win10v2004-20231127-enlocale:en-usos:windows10-2004-x64system -
submitted
04/12/2023, 06:55
Static task
static1
Behavioral task
behavioral1
Sample
cc0f6af0ea57fc9cb9698c534fbbe1b2.exe
Resource
win7-20231025-en
General
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Target
cc0f6af0ea57fc9cb9698c534fbbe1b2.exe
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Size
780KB
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MD5
cc0f6af0ea57fc9cb9698c534fbbe1b2
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SHA1
4fd4acb6716bfb889f685045d00662fb3d46be78
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SHA256
6e4a05f7b769a8cb12f932281af71be353b058d68a3f96bd00a38b63e78bae70
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SHA512
eaf6132501ad4e9e213606afcc164c4dd8dca4a9a685d2411e23ff4b51ea1a4eddded73d2c953b633d1e92bd052789b6a41daae19a2654fa556392fa5904e4e3
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SSDEEP
12288:FW8tW8G34/uK45+po2op+9icdMJG0Bi3SQuFBASUFFJR92DGMAvWrQnTIRy8OJ/k:e34/up+pJzl50ySXASKCyTwecRy83
Malware Config
Extracted
nanocore
1.2.2.0
btldinc7.sytes.net:4510
127.0.0.1:4510
8dca47d1-e2ac-4cf4-9dae-489155036caa
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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
2023-09-14T23:25:11.588272936Z
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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
4510
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default_group
btld
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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
8dca47d1-e2ac-4cf4-9dae-489155036caa
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mutex_timeout
5000
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prevent_system_sleep
false
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primary_connection_host
btldinc7.sytes.net
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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
false
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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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Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\NAS Host = "C:\\Program Files (x86)\\NAS Host\\nashost.exe" cc0f6af0ea57fc9cb9698c534fbbe1b2.exe -
description ioc Process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA cc0f6af0ea57fc9cb9698c534fbbe1b2.exe -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 4472 set thread context of 4768 4472 cc0f6af0ea57fc9cb9698c534fbbe1b2.exe 93 -
Drops file in Program Files directory 2 IoCs
description ioc Process File created C:\Program Files (x86)\NAS Host\nashost.exe cc0f6af0ea57fc9cb9698c534fbbe1b2.exe File opened for modification C:\Program Files (x86)\NAS Host\nashost.exe cc0f6af0ea57fc9cb9698c534fbbe1b2.exe -
Creates scheduled task(s) 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 4164 schtasks.exe 5072 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 4768 cc0f6af0ea57fc9cb9698c534fbbe1b2.exe 4768 cc0f6af0ea57fc9cb9698c534fbbe1b2.exe 4768 cc0f6af0ea57fc9cb9698c534fbbe1b2.exe 4768 cc0f6af0ea57fc9cb9698c534fbbe1b2.exe 4768 cc0f6af0ea57fc9cb9698c534fbbe1b2.exe 4768 cc0f6af0ea57fc9cb9698c534fbbe1b2.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 4768 cc0f6af0ea57fc9cb9698c534fbbe1b2.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 4768 cc0f6af0ea57fc9cb9698c534fbbe1b2.exe -
Suspicious use of WriteProcessMemory 14 IoCs
description pid Process procid_target PID 4472 wrote to memory of 4768 4472 cc0f6af0ea57fc9cb9698c534fbbe1b2.exe 93 PID 4472 wrote to memory of 4768 4472 cc0f6af0ea57fc9cb9698c534fbbe1b2.exe 93 PID 4472 wrote to memory of 4768 4472 cc0f6af0ea57fc9cb9698c534fbbe1b2.exe 93 PID 4472 wrote to memory of 4768 4472 cc0f6af0ea57fc9cb9698c534fbbe1b2.exe 93 PID 4472 wrote to memory of 4768 4472 cc0f6af0ea57fc9cb9698c534fbbe1b2.exe 93 PID 4472 wrote to memory of 4768 4472 cc0f6af0ea57fc9cb9698c534fbbe1b2.exe 93 PID 4472 wrote to memory of 4768 4472 cc0f6af0ea57fc9cb9698c534fbbe1b2.exe 93 PID 4472 wrote to memory of 4768 4472 cc0f6af0ea57fc9cb9698c534fbbe1b2.exe 93 PID 4768 wrote to memory of 4164 4768 cc0f6af0ea57fc9cb9698c534fbbe1b2.exe 95 PID 4768 wrote to memory of 4164 4768 cc0f6af0ea57fc9cb9698c534fbbe1b2.exe 95 PID 4768 wrote to memory of 4164 4768 cc0f6af0ea57fc9cb9698c534fbbe1b2.exe 95 PID 4768 wrote to memory of 5072 4768 cc0f6af0ea57fc9cb9698c534fbbe1b2.exe 98 PID 4768 wrote to memory of 5072 4768 cc0f6af0ea57fc9cb9698c534fbbe1b2.exe 98 PID 4768 wrote to memory of 5072 4768 cc0f6af0ea57fc9cb9698c534fbbe1b2.exe 98
Processes
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C:\Users\Admin\AppData\Local\Temp\cc0f6af0ea57fc9cb9698c534fbbe1b2.exe"C:\Users\Admin\AppData\Local\Temp\cc0f6af0ea57fc9cb9698c534fbbe1b2.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4472 -
C:\Users\Admin\AppData\Local\Temp\cc0f6af0ea57fc9cb9698c534fbbe1b2.exe"C:\Users\Admin\AppData\Local\Temp\cc0f6af0ea57fc9cb9698c534fbbe1b2.exe"2⤵
- Adds Run key to start application
- Checks whether UAC is enabled
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4768 -
C:\Windows\SysWOW64\schtasks.exe"schtasks.exe" /create /f /tn "NAS Host" /xml "C:\Users\Admin\AppData\Local\Temp\tmpF1E2.tmp"3⤵
- Creates scheduled task(s)
PID:4164
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C:\Windows\SysWOW64\schtasks.exe"schtasks.exe" /create /f /tn "NAS Host Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpF28F.tmp"3⤵
- Creates scheduled task(s)
PID:5072
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\cc0f6af0ea57fc9cb9698c534fbbe1b2.exe.log
Filesize1KB
MD58ec831f3e3a3f77e4a7b9cd32b48384c
SHA1d83f09fd87c5bd86e045873c231c14836e76a05c
SHA2567667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982
SHA51226bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3
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Filesize
1KB
MD5fc7fbae2a7339f292629b47f7c191d91
SHA12572887548578a060a5eff284dac4e22db06f1d2
SHA25627ad5fb53e16fc402a004b5b5ee6bd52a4acd38ef1f783c774e5bb8b182e429b
SHA5128b67a94d58a006f58ec3274498fec1a3ea689890369ea47794163bb2d7f16bea7bbd7a1c83f01bf523b239c9153e64a7b857263d8c1e09c2618d6e49c7bf77e4
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Filesize
1KB
MD59f554f602c22cfc20079e966d177fadb
SHA1789baa3425849bf239e47c6bcf352e6693a8c337
SHA2564c760d5fe0c06cf4bf554170870f41181c61a217c37eb826903094dda86dd1f1
SHA512b83e3e97dbe38ec4c64d9bef65e2521416f2d7434d78d05e66f729a2e0fbfea3f9bc6f6c4abaf76555af89a9565dfc0853d99067be9042dd66ed6246696eecbb