Analysis
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max time kernel
172s -
max time network
174s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
27/11/2022, 00:05
Static task
static1
Behavioral task
behavioral1
Sample
6771ab93cecc2ca6b8527d18d4a6c449610d7d836d7a4d2bd9321b0993d0e84d.exe
Resource
win7-20221111-en
General
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Target
6771ab93cecc2ca6b8527d18d4a6c449610d7d836d7a4d2bd9321b0993d0e84d.exe
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Size
373KB
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MD5
8bec63147c104503e5fbf015f43aada1
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SHA1
7ac45539ec554d1868b76203d18d2c46fb4f069f
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SHA256
6771ab93cecc2ca6b8527d18d4a6c449610d7d836d7a4d2bd9321b0993d0e84d
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SHA512
95147f853d23e498f46bc5f1d163fcfdaace088cf12f2e31409490ab9501483067686ef0920e419507c788468de045168c4460a570db4bf789f56441a6978f32
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SSDEEP
6144:A3GqLppybgISQTAfIi3afLvcWGJDB2uASN8EUbRSLQ0EwrfKza:clypScAfYfTEJDjFelALPTK
Malware Config
Extracted
nanocore
1.2.1.1
euroano.ddns.net:9033
euroano2.ddns.net:9033
69b947b8-14b5-4929-94b4-6b6cc9d47ccf
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activate_away_mode
true
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backup_connection_host
euroano2.ddns.net
- backup_dns_server
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buffer_size
65535
-
build_time
2014-10-23T22:33:32.053582736Z
-
bypass_user_account_control
true
- bypass_user_account_control_data
-
clear_access_control
true
-
clear_zone_identifier
true
-
connect_delay
4000
-
connection_port
9033
-
default_group
nano
-
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
69b947b8-14b5-4929-94b4-6b6cc9d47ccf
-
mutex_timeout
5000
-
prevent_system_sleep
true
-
primary_connection_host
euroano.ddns.net
- primary_dns_server
-
request_elevation
true
-
restart_delay
5000
-
run_delay
0
-
run_on_startup
true
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set_critical_process
true
-
timeout_interval
5000
-
use_custom_dns_server
false
-
version
1.2.1.1
-
wan_timeout
8000
Signatures
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Modifies WinLogon for persistence 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "\"C:\\Users\\Admin\\AppData\\Roaming\\9oNqwXA0uhYSdCD3\\xm8ePVAjEwOT.exe\",explorer.exe" 6771ab93cecc2ca6b8527d18d4a6c449610d7d836d7a4d2bd9321b0993d0e84d.exe -
description ioc Process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA 6771ab93cecc2ca6b8527d18d4a6c449610d7d836d7a4d2bd9321b0993d0e84d.exe -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 3592 set thread context of 1744 3592 6771ab93cecc2ca6b8527d18d4a6c449610d7d836d7a4d2bd9321b0993d0e84d.exe 85 -
Suspicious behavior: EnumeratesProcesses 9 IoCs
pid Process 3592 6771ab93cecc2ca6b8527d18d4a6c449610d7d836d7a4d2bd9321b0993d0e84d.exe 3592 6771ab93cecc2ca6b8527d18d4a6c449610d7d836d7a4d2bd9321b0993d0e84d.exe 3592 6771ab93cecc2ca6b8527d18d4a6c449610d7d836d7a4d2bd9321b0993d0e84d.exe 3592 6771ab93cecc2ca6b8527d18d4a6c449610d7d836d7a4d2bd9321b0993d0e84d.exe 3592 6771ab93cecc2ca6b8527d18d4a6c449610d7d836d7a4d2bd9321b0993d0e84d.exe 3592 6771ab93cecc2ca6b8527d18d4a6c449610d7d836d7a4d2bd9321b0993d0e84d.exe 1744 6771ab93cecc2ca6b8527d18d4a6c449610d7d836d7a4d2bd9321b0993d0e84d.exe 1744 6771ab93cecc2ca6b8527d18d4a6c449610d7d836d7a4d2bd9321b0993d0e84d.exe 1744 6771ab93cecc2ca6b8527d18d4a6c449610d7d836d7a4d2bd9321b0993d0e84d.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 1744 6771ab93cecc2ca6b8527d18d4a6c449610d7d836d7a4d2bd9321b0993d0e84d.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 3592 6771ab93cecc2ca6b8527d18d4a6c449610d7d836d7a4d2bd9321b0993d0e84d.exe Token: SeDebugPrivilege 1744 6771ab93cecc2ca6b8527d18d4a6c449610d7d836d7a4d2bd9321b0993d0e84d.exe -
Suspicious use of WriteProcessMemory 11 IoCs
description pid Process procid_target PID 3592 wrote to memory of 2424 3592 6771ab93cecc2ca6b8527d18d4a6c449610d7d836d7a4d2bd9321b0993d0e84d.exe 84 PID 3592 wrote to memory of 2424 3592 6771ab93cecc2ca6b8527d18d4a6c449610d7d836d7a4d2bd9321b0993d0e84d.exe 84 PID 3592 wrote to memory of 2424 3592 6771ab93cecc2ca6b8527d18d4a6c449610d7d836d7a4d2bd9321b0993d0e84d.exe 84 PID 3592 wrote to memory of 1744 3592 6771ab93cecc2ca6b8527d18d4a6c449610d7d836d7a4d2bd9321b0993d0e84d.exe 85 PID 3592 wrote to memory of 1744 3592 6771ab93cecc2ca6b8527d18d4a6c449610d7d836d7a4d2bd9321b0993d0e84d.exe 85 PID 3592 wrote to memory of 1744 3592 6771ab93cecc2ca6b8527d18d4a6c449610d7d836d7a4d2bd9321b0993d0e84d.exe 85 PID 3592 wrote to memory of 1744 3592 6771ab93cecc2ca6b8527d18d4a6c449610d7d836d7a4d2bd9321b0993d0e84d.exe 85 PID 3592 wrote to memory of 1744 3592 6771ab93cecc2ca6b8527d18d4a6c449610d7d836d7a4d2bd9321b0993d0e84d.exe 85 PID 3592 wrote to memory of 1744 3592 6771ab93cecc2ca6b8527d18d4a6c449610d7d836d7a4d2bd9321b0993d0e84d.exe 85 PID 3592 wrote to memory of 1744 3592 6771ab93cecc2ca6b8527d18d4a6c449610d7d836d7a4d2bd9321b0993d0e84d.exe 85 PID 3592 wrote to memory of 1744 3592 6771ab93cecc2ca6b8527d18d4a6c449610d7d836d7a4d2bd9321b0993d0e84d.exe 85
Processes
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C:\Users\Admin\AppData\Local\Temp\6771ab93cecc2ca6b8527d18d4a6c449610d7d836d7a4d2bd9321b0993d0e84d.exe"C:\Users\Admin\AppData\Local\Temp\6771ab93cecc2ca6b8527d18d4a6c449610d7d836d7a4d2bd9321b0993d0e84d.exe"1⤵
- Modifies WinLogon for persistence
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3592 -
C:\Users\Admin\AppData\Local\Temp\6771ab93cecc2ca6b8527d18d4a6c449610d7d836d7a4d2bd9321b0993d0e84d.exe"C:\Users\Admin\AppData\Local\Temp\6771ab93cecc2ca6b8527d18d4a6c449610d7d836d7a4d2bd9321b0993d0e84d.exe"2⤵PID:2424
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C:\Users\Admin\AppData\Local\Temp\6771ab93cecc2ca6b8527d18d4a6c449610d7d836d7a4d2bd9321b0993d0e84d.exe"C:\Users\Admin\AppData\Local\Temp\6771ab93cecc2ca6b8527d18d4a6c449610d7d836d7a4d2bd9321b0993d0e84d.exe"2⤵
- Checks whether UAC is enabled
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
PID:1744
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\6771ab93cecc2ca6b8527d18d4a6c449610d7d836d7a4d2bd9321b0993d0e84d.exe.log
Filesize400B
MD50a9b4592cd49c3c21f6767c2dabda92f
SHA1f534297527ae5ccc0ecb2221ddeb8e58daeb8b74
SHA256c7effe9cb81a70d738dee863991afefab040290d4c4b78b4202383bcb9f88fcd
SHA5126b878df474e5bbfb8e9e265f15a76560c2ef151dcebc6388c82d7f6f86ffaf83f5ade5a09f1842e493cb6c8fd63b0b88d088c728fd725f7139f965a5ee332307