Analysis
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max time kernel
144s -
max time network
149s -
platform
windows10-2004_x64 -
resource
win10v2004-20221111-en -
resource tags
arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system -
submitted
16/11/2022, 14:12
Static task
static1
Behavioral task
behavioral1
Sample
3f0a89e3647d4ff575fc0c8db1ea5e9f7dbf2c0041f90ec2ef26c7eab69b34f8.exe
Resource
win7-20220812-en
General
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Target
3f0a89e3647d4ff575fc0c8db1ea5e9f7dbf2c0041f90ec2ef26c7eab69b34f8.exe
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Size
907KB
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MD5
85605a584d908e5a32d91767940f7aab
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SHA1
4568b524b21c8cea9ae297ab782ac95a33a61e59
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SHA256
3f0a89e3647d4ff575fc0c8db1ea5e9f7dbf2c0041f90ec2ef26c7eab69b34f8
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SHA512
a43af329a798947bc8b2473436de1092f51b3ac23f0f562c59c4b263216d00d6a9b39b4e3a4255d00cb7dfaebcb26563be5df321b0f4d049071ec90c5cfd156e
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SSDEEP
12288:sANiU251k3btMOKdeyqo6x+UXndim70h+qrDMJ65AqQR1I9tWAlEsZqxJU2V8:sAToEhMVioctP70h+r0yqEspVqk2W
Malware Config
Extracted
nanocore
1.2.2.0
maxlogs.webhop.me:1620
9d764268-05c2-4a8e-8c39-b4db356d4640
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activate_away_mode
true
- backup_connection_host
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backup_dns_server
8.8.4.4
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buffer_size
65535
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build_time
2020-05-29T07:34:04.203922136Z
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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
1620
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default_group
x
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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
9d764268-05c2-4a8e-8c39-b4db356d4640
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mutex_timeout
5000
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prevent_system_sleep
false
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primary_connection_host
maxlogs.webhop.me
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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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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\Control Panel\International\Geo\Nation 3f0a89e3647d4ff575fc0c8db1ea5e9f7dbf2c0041f90ec2ef26c7eab69b34f8.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\TCP Subsystem = "C:\\Program Files (x86)\\TCP Subsystem\\tcpss.exe" MSBuild.exe -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 1472 set thread context of 4436 1472 3f0a89e3647d4ff575fc0c8db1ea5e9f7dbf2c0041f90ec2ef26c7eab69b34f8.exe 86 -
Drops file in Program Files directory 2 IoCs
description ioc Process File created C:\Program Files (x86)\TCP Subsystem\tcpss.exe MSBuild.exe File opened for modification C:\Program Files (x86)\TCP Subsystem\tcpss.exe MSBuild.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.
pid Process 4856 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 1472 3f0a89e3647d4ff575fc0c8db1ea5e9f7dbf2c0041f90ec2ef26c7eab69b34f8.exe 1472 3f0a89e3647d4ff575fc0c8db1ea5e9f7dbf2c0041f90ec2ef26c7eab69b34f8.exe 1472 3f0a89e3647d4ff575fc0c8db1ea5e9f7dbf2c0041f90ec2ef26c7eab69b34f8.exe 4436 MSBuild.exe 4436 MSBuild.exe 4436 MSBuild.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 4436 MSBuild.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 1472 3f0a89e3647d4ff575fc0c8db1ea5e9f7dbf2c0041f90ec2ef26c7eab69b34f8.exe Token: SeDebugPrivilege 4436 MSBuild.exe -
Suspicious use of WriteProcessMemory 14 IoCs
description pid Process procid_target PID 1472 wrote to memory of 4856 1472 3f0a89e3647d4ff575fc0c8db1ea5e9f7dbf2c0041f90ec2ef26c7eab69b34f8.exe 83 PID 1472 wrote to memory of 4856 1472 3f0a89e3647d4ff575fc0c8db1ea5e9f7dbf2c0041f90ec2ef26c7eab69b34f8.exe 83 PID 1472 wrote to memory of 4856 1472 3f0a89e3647d4ff575fc0c8db1ea5e9f7dbf2c0041f90ec2ef26c7eab69b34f8.exe 83 PID 1472 wrote to memory of 4160 1472 3f0a89e3647d4ff575fc0c8db1ea5e9f7dbf2c0041f90ec2ef26c7eab69b34f8.exe 85 PID 1472 wrote to memory of 4160 1472 3f0a89e3647d4ff575fc0c8db1ea5e9f7dbf2c0041f90ec2ef26c7eab69b34f8.exe 85 PID 1472 wrote to memory of 4160 1472 3f0a89e3647d4ff575fc0c8db1ea5e9f7dbf2c0041f90ec2ef26c7eab69b34f8.exe 85 PID 1472 wrote to memory of 4436 1472 3f0a89e3647d4ff575fc0c8db1ea5e9f7dbf2c0041f90ec2ef26c7eab69b34f8.exe 86 PID 1472 wrote to memory of 4436 1472 3f0a89e3647d4ff575fc0c8db1ea5e9f7dbf2c0041f90ec2ef26c7eab69b34f8.exe 86 PID 1472 wrote to memory of 4436 1472 3f0a89e3647d4ff575fc0c8db1ea5e9f7dbf2c0041f90ec2ef26c7eab69b34f8.exe 86 PID 1472 wrote to memory of 4436 1472 3f0a89e3647d4ff575fc0c8db1ea5e9f7dbf2c0041f90ec2ef26c7eab69b34f8.exe 86 PID 1472 wrote to memory of 4436 1472 3f0a89e3647d4ff575fc0c8db1ea5e9f7dbf2c0041f90ec2ef26c7eab69b34f8.exe 86 PID 1472 wrote to memory of 4436 1472 3f0a89e3647d4ff575fc0c8db1ea5e9f7dbf2c0041f90ec2ef26c7eab69b34f8.exe 86 PID 1472 wrote to memory of 4436 1472 3f0a89e3647d4ff575fc0c8db1ea5e9f7dbf2c0041f90ec2ef26c7eab69b34f8.exe 86 PID 1472 wrote to memory of 4436 1472 3f0a89e3647d4ff575fc0c8db1ea5e9f7dbf2c0041f90ec2ef26c7eab69b34f8.exe 86
Processes
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C:\Users\Admin\AppData\Local\Temp\3f0a89e3647d4ff575fc0c8db1ea5e9f7dbf2c0041f90ec2ef26c7eab69b34f8.exe"C:\Users\Admin\AppData\Local\Temp\3f0a89e3647d4ff575fc0c8db1ea5e9f7dbf2c0041f90ec2ef26c7eab69b34f8.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1472 -
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\TztnPxRQQq" /XML "C:\Users\Admin\AppData\Local\Temp\tmpCFB8.tmp"2⤵
- Creates scheduled task(s)
PID:4856
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"{path}"2⤵PID:4160
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"{path}"2⤵
- Adds Run key to start application
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
PID:4436
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
1KB
MD535e45f7d0f39f4ec44cb7a2612d08c17
SHA16c81050c24b385cabe26eb6ce2d347e52e3e3755
SHA256e95f7357ed9328f24aaeeaf35e146476b72646009aefdab5a02e3771aa415709
SHA5122af7160028530c985953bbad7cd8c1465b6d6b1274e4f98e4cd92c8736c40f5ef333befda5f097be4f92b15fbd061f55735331608ad68ce1f5c0eac31b19c13f