Analysis
-
max time kernel
122s -
max time network
148s -
platform
windows10_x64 -
resource
win10 -
submitted
30-06-2020 13:25
Static task
static1
Behavioral task
behavioral1
Sample
673427Cd1.exe
Resource
win7v200430
General
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Target
673427Cd1.exe
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Size
416KB
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MD5
add3457d0c39229a423260609e05499a
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SHA1
e871c52d22998ce1837f62458fc26f0b9e93e774
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SHA256
290fb785e3b59196b2c3d474822f7dd18eaa9d13526c19b9f5dfd51ba3cb4756
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SHA512
6e77c08af2c5c78d8af18572a4667a4a4618400c12aabd459844a792c4526cb00555a5d23a42ffc0cb41d1adf57a8dc7511f0a25969876c0a064d8d3e76e5e75
Malware Config
Extracted
nanocore
1.2.2.0
eventmulla.ddns.net:6543
f580f112-9bc3-44ee-b5d4-3dc367e2d9b7
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activate_away_mode
true
- backup_connection_host
-
backup_dns_server
8.8.4.4
-
buffer_size
65535
-
build_time
2020-04-04T21:29:27.514527536Z
-
bypass_user_account_control
false
-
bypass_user_account_control_data
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
-
clear_access_control
true
-
clear_zone_identifier
false
-
connect_delay
4000
-
connection_port
6543
-
default_group
eventmulla
-
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
f580f112-9bc3-44ee-b5d4-3dc367e2d9b7
-
mutex_timeout
5000
-
prevent_system_sleep
true
-
primary_connection_host
eventmulla.ddns.net
-
primary_dns_server
8.8.8.8
-
request_elevation
true
-
restart_delay
5000
-
run_delay
0
-
run_on_startup
true
-
set_critical_process
true
-
timeout_interval
5000
-
use_custom_dns_server
false
-
version
1.2.2.0
-
wan_timeout
8000
Signatures
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Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
MSBuild.exepid process 3492 MSBuild.exe -
Suspicious use of WriteProcessMemory 32 IoCs
Processes:
673427Cd1.exeMSBuild.exedescription pid process target process PID 344 wrote to memory of 3956 344 673427Cd1.exe schtasks.exe PID 344 wrote to memory of 3956 344 673427Cd1.exe schtasks.exe PID 344 wrote to memory of 3956 344 673427Cd1.exe schtasks.exe PID 344 wrote to memory of 3492 344 673427Cd1.exe MSBuild.exe PID 344 wrote to memory of 3492 344 673427Cd1.exe MSBuild.exe PID 344 wrote to memory of 3492 344 673427Cd1.exe MSBuild.exe PID 344 wrote to memory of 3492 344 673427Cd1.exe MSBuild.exe PID 344 wrote to memory of 3492 344 673427Cd1.exe MSBuild.exe PID 344 wrote to memory of 3492 344 673427Cd1.exe MSBuild.exe PID 344 wrote to memory of 3492 344 673427Cd1.exe MSBuild.exe PID 344 wrote to memory of 3492 344 673427Cd1.exe MSBuild.exe PID 3492 wrote to memory of 4004 3492 MSBuild.exe schtasks.exe PID 3492 wrote to memory of 4004 3492 MSBuild.exe schtasks.exe PID 3492 wrote to memory of 4004 3492 MSBuild.exe schtasks.exe PID 3492 wrote to memory of 3916 3492 MSBuild.exe vbc.exe PID 3492 wrote to memory of 3916 3492 MSBuild.exe vbc.exe PID 3492 wrote to memory of 3916 3492 MSBuild.exe vbc.exe PID 3492 wrote to memory of 3916 3492 MSBuild.exe vbc.exe PID 3492 wrote to memory of 3916 3492 MSBuild.exe vbc.exe PID 3492 wrote to memory of 3916 3492 MSBuild.exe vbc.exe PID 3492 wrote to memory of 3916 3492 MSBuild.exe vbc.exe PID 3492 wrote to memory of 3916 3492 MSBuild.exe vbc.exe PID 3492 wrote to memory of 3916 3492 MSBuild.exe vbc.exe PID 3492 wrote to memory of 2300 3492 MSBuild.exe vbc.exe PID 3492 wrote to memory of 2300 3492 MSBuild.exe vbc.exe PID 3492 wrote to memory of 2300 3492 MSBuild.exe vbc.exe PID 3492 wrote to memory of 2300 3492 MSBuild.exe vbc.exe PID 3492 wrote to memory of 2300 3492 MSBuild.exe vbc.exe PID 3492 wrote to memory of 2300 3492 MSBuild.exe vbc.exe PID 3492 wrote to memory of 2300 3492 MSBuild.exe vbc.exe PID 3492 wrote to memory of 2300 3492 MSBuild.exe vbc.exe PID 3492 wrote to memory of 2300 3492 MSBuild.exe vbc.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
MSBuild.exedescription pid process Token: SeDebugPrivilege 3492 MSBuild.exe -
Creates scheduled task(s) 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
Processes:
schtasks.exeschtasks.exepid process 3956 schtasks.exe 4004 schtasks.exe -
Processes:
MSBuild.exedescription ioc process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA MSBuild.exe -
Uses the VBS compiler for execution 1 TTPs
-
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Suspicious use of SetThreadContext 3 IoCs
Processes:
673427Cd1.exeMSBuild.exedescription pid process target process PID 344 set thread context of 3492 344 673427Cd1.exe MSBuild.exe PID 3492 set thread context of 3916 3492 MSBuild.exe vbc.exe PID 3492 set thread context of 2300 3492 MSBuild.exe vbc.exe -
Suspicious behavior: EnumeratesProcesses 8 IoCs
Processes:
MSBuild.exevbc.exepid process 3492 MSBuild.exe 3492 MSBuild.exe 3492 MSBuild.exe 3492 MSBuild.exe 3492 MSBuild.exe 3492 MSBuild.exe 2300 vbc.exe 2300 vbc.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\673427Cd1.exe"C:\Users\Admin\AppData\Local\Temp\673427Cd1.exe"1⤵
- Suspicious use of WriteProcessMemory
- Suspicious use of SetThreadContext
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\JzCmGHwrvB" /XML "C:\Users\Admin\AppData\Local\Temp\tmp7337.tmp"2⤵
- Creates scheduled task(s)
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C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe"{path}"2⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
- Suspicious use of AdjustPrivilegeToken
- Checks whether UAC is enabled
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
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C:\Windows\SysWOW64\schtasks.exe"schtasks.exe" /create /f /tn "DDP Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmp7663.tmp"3⤵
- Creates scheduled task(s)
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\??\c:\windows\microsoft.net\framework\v2.0.50727\vbc.exe"c:\windows\microsoft.net\framework\v2.0.50727\vbc.exe" /shtml "C:\Users\Admin\AppData\Local\Temp\c4gwr0hq.krr"3⤵
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\??\c:\windows\microsoft.net\framework\v2.0.50727\vbc.exe"c:\windows\microsoft.net\framework\v2.0.50727\vbc.exe" /shtml "C:\Users\Admin\AppData\Local\Temp\cv25ol52.syg"3⤵
- Suspicious behavior: EnumeratesProcesses
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Temp\c4gwr0hq.krr
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C:\Users\Admin\AppData\Local\Temp\cv25ol52.syg
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C:\Users\Admin\AppData\Local\Temp\tmp7337.tmp
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C:\Users\Admin\AppData\Local\Temp\tmp7663.tmp
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memory/2300-12-0x0000000000400000-0x0000000000453000-memory.dmpFilesize
332KB
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memory/2300-11-0x0000000000442628-mapping.dmp
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memory/2300-10-0x0000000000400000-0x0000000000453000-memory.dmpFilesize
332KB
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memory/3492-3-0x000000000041E792-mapping.dmp
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memory/3492-2-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/3916-8-0x0000000000400000-0x000000000041B000-memory.dmpFilesize
108KB
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memory/3916-7-0x0000000000411654-mapping.dmp
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memory/3916-6-0x0000000000400000-0x000000000041B000-memory.dmpFilesize
108KB
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memory/3956-0-0x0000000000000000-mapping.dmp
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memory/4004-4-0x0000000000000000-mapping.dmp