Analysis
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max time kernel
91s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20221111-en -
resource tags
arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system -
submitted
05-02-2023 21:11
Static task
static1
Behavioral task
behavioral1
Sample
bbe4ba566d229a405da3af72193d297f.exe
Resource
win7-20221111-en
General
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Target
bbe4ba566d229a405da3af72193d297f.exe
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Size
1.3MB
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MD5
bbe4ba566d229a405da3af72193d297f
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SHA1
ffb73821d698bc2e32f1a32c7adf95e66520c7a8
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SHA256
aeb8e080b996a75f85bb82e2e7a42d0302735713f34fb95fff1bfb97a030e107
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SHA512
a3ba9225b2719f482f807fe91217cdccbb9c415d54a8cd4531960bf20456868ba7fb1be2e473c26f306c33b74615a6f5192f0c852dca25c66e6d63a4cbb25529
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SSDEEP
24576:8ixNAopnJcU4TgHosbIY95AcS1h9VOzYJ0Natxb:8iFpnx4TUosbIYEcSGQ06
Malware Config
Extracted
nanocore
1.2.2.0
rcontrol4sec.ddnsgeek.com:5080
127.0.0.1:5080
19b525d2-02f6-47c5-b606-1d038212d191
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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
2022-11-12T11:11:53.819338936Z
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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
false
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connect_delay
4000
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connection_port
5080
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default_group
Set
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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
19b525d2-02f6-47c5-b606-1d038212d191
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mutex_timeout
5000
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prevent_system_sleep
false
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primary_connection_host
rcontrol4sec.ddnsgeek.com
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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
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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Modifies WinLogon for persistence 2 TTPs 1 IoCs
Processes:
bbe4ba566d229a405da3af72193d297f.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,\"C:\\Users\\Admin\\AppData\\Roaming\\Adobe\\Flash Player.exe\"," bbe4ba566d229a405da3af72193d297f.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
bbe4ba566d229a405da3af72193d297f.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Control Panel\International\Geo\Nation bbe4ba566d229a405da3af72193d297f.exe -
Processes:
bbe4ba566d229a405da3af72193d297f.exedescription ioc process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA bbe4ba566d229a405da3af72193d297f.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
bbe4ba566d229a405da3af72193d297f.exedescription pid process target process PID 4736 set thread context of 4928 4736 bbe4ba566d229a405da3af72193d297f.exe bbe4ba566d229a405da3af72193d297f.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Suspicious behavior: EnumeratesProcesses 8 IoCs
Processes:
powershell.exebbe4ba566d229a405da3af72193d297f.exepid process 1028 powershell.exe 1028 powershell.exe 4928 bbe4ba566d229a405da3af72193d297f.exe 4928 bbe4ba566d229a405da3af72193d297f.exe 4928 bbe4ba566d229a405da3af72193d297f.exe 4928 bbe4ba566d229a405da3af72193d297f.exe 4928 bbe4ba566d229a405da3af72193d297f.exe 4928 bbe4ba566d229a405da3af72193d297f.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
bbe4ba566d229a405da3af72193d297f.exepid process 4928 bbe4ba566d229a405da3af72193d297f.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
Processes:
bbe4ba566d229a405da3af72193d297f.exepowershell.exebbe4ba566d229a405da3af72193d297f.exedescription pid process Token: SeDebugPrivilege 4736 bbe4ba566d229a405da3af72193d297f.exe Token: SeDebugPrivilege 1028 powershell.exe Token: SeDebugPrivilege 4928 bbe4ba566d229a405da3af72193d297f.exe -
Suspicious use of WriteProcessMemory 11 IoCs
Processes:
bbe4ba566d229a405da3af72193d297f.exedescription pid process target process PID 4736 wrote to memory of 1028 4736 bbe4ba566d229a405da3af72193d297f.exe powershell.exe PID 4736 wrote to memory of 1028 4736 bbe4ba566d229a405da3af72193d297f.exe powershell.exe PID 4736 wrote to memory of 1028 4736 bbe4ba566d229a405da3af72193d297f.exe powershell.exe PID 4736 wrote to memory of 4928 4736 bbe4ba566d229a405da3af72193d297f.exe bbe4ba566d229a405da3af72193d297f.exe PID 4736 wrote to memory of 4928 4736 bbe4ba566d229a405da3af72193d297f.exe bbe4ba566d229a405da3af72193d297f.exe PID 4736 wrote to memory of 4928 4736 bbe4ba566d229a405da3af72193d297f.exe bbe4ba566d229a405da3af72193d297f.exe PID 4736 wrote to memory of 4928 4736 bbe4ba566d229a405da3af72193d297f.exe bbe4ba566d229a405da3af72193d297f.exe PID 4736 wrote to memory of 4928 4736 bbe4ba566d229a405da3af72193d297f.exe bbe4ba566d229a405da3af72193d297f.exe PID 4736 wrote to memory of 4928 4736 bbe4ba566d229a405da3af72193d297f.exe bbe4ba566d229a405da3af72193d297f.exe PID 4736 wrote to memory of 4928 4736 bbe4ba566d229a405da3af72193d297f.exe bbe4ba566d229a405da3af72193d297f.exe PID 4736 wrote to memory of 4928 4736 bbe4ba566d229a405da3af72193d297f.exe bbe4ba566d229a405da3af72193d297f.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\bbe4ba566d229a405da3af72193d297f.exe"C:\Users\Admin\AppData\Local\Temp\bbe4ba566d229a405da3af72193d297f.exe"1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMgAwAA==2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Local\Temp\bbe4ba566d229a405da3af72193d297f.exeC:\Users\Admin\AppData\Local\Temp\bbe4ba566d229a405da3af72193d297f.exe2⤵
- 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\Microsoft\CLR_v4.0_32\UsageLogs\bbe4ba566d229a405da3af72193d297f.exe.logFilesize
1KB
MD5a713c363be116d5ed1f971db6a657e4f
SHA190791863564c9ed38e7b4f047022dec4474060a1
SHA2564b5c446ec8ed2a2696ba00a0890763d413006ce1ea1a7a32fda1655720aef46e
SHA5125dc740414a6ec30908e924f3bdfae2f761a35a476ef2dda239b789575a0a3696169deb6dc84a14d5828eaa5644623f107b2c686bfa4f54a90f0688239b4b1739
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memory/1028-136-0x0000000005590000-0x0000000005BB8000-memory.dmpFilesize
6.2MB
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memory/1028-139-0x00000000064B0000-0x00000000064CE000-memory.dmpFilesize
120KB
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memory/1028-135-0x0000000004EE0000-0x0000000004F16000-memory.dmpFilesize
216KB
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memory/1028-137-0x0000000005C30000-0x0000000005C96000-memory.dmpFilesize
408KB
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memory/1028-141-0x00000000069B0000-0x00000000069CA000-memory.dmpFilesize
104KB
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memory/1028-138-0x0000000005E90000-0x0000000005EF6000-memory.dmpFilesize
408KB
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memory/1028-134-0x0000000000000000-mapping.dmp
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memory/1028-140-0x0000000007CF0000-0x000000000836A000-memory.dmpFilesize
6.5MB
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memory/4736-132-0x00000000009B0000-0x0000000000B00000-memory.dmpFilesize
1.3MB
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memory/4736-133-0x0000000005890000-0x00000000058B2000-memory.dmpFilesize
136KB
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memory/4928-142-0x0000000000000000-mapping.dmp
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memory/4928-143-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/4928-145-0x00000000059C0000-0x0000000005F64000-memory.dmpFilesize
5.6MB
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memory/4928-146-0x00000000054B0000-0x0000000005542000-memory.dmpFilesize
584KB
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memory/4928-147-0x0000000005550000-0x00000000055EC000-memory.dmpFilesize
624KB
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memory/4928-148-0x0000000005490000-0x000000000549A000-memory.dmpFilesize
40KB