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Analysis
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max time kernel
147s -
max time network
154s -
platform
windows10-2004_x64 -
resource
win10v2004-20220901-en -
resource tags
arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system -
submitted
19/09/2022, 01:41
Static task
static1
Behavioral task
behavioral1
Sample
Memorandum-Circular No. JGS 038-22 PHILHEALTH.exe
Resource
win7-20220901-en
General
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Target
Memorandum-Circular No. JGS 038-22 PHILHEALTH.exe
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Size
968KB
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MD5
8beb5b0227606ded6fb8d361569a33a1
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SHA1
6d4ef697c42d499bded4586724570201213321eb
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SHA256
0560ac93c3fc234e056519b8f162ddd1bfe36905f54dc9c9088c25972e4a7970
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SHA512
e45e3324573aea0486d2cede8754d3697e0683d3cf497aca4390806d0b71701f3ac7f24db655f4a9531b3526076bb6743b9548f57891ad4229135e4bda9bb7c7
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SSDEEP
12288:QYT+ykC/7qO71wSY/030fjUZfmC6JtHMxxWGOyTYw:f+ykCZa/kMUZfOaq
Malware Config
Extracted
nanocore
1.2.2.0
anglemanagement.ddns.net:9036
anglemanagement039.freeddns.org:9036
a2513c3a-8d74-413e-a1e8-a41d734656af
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activate_away_mode
true
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backup_connection_host
anglemanagement039.freeddns.org
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backup_dns_server
8.8.4.4
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buffer_size
65535
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build_time
2022-06-11T22:11:54.136761836Z
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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
9036
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default_group
SEPT2022
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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
a2513c3a-8d74-413e-a1e8-a41d734656af
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mutex_timeout
5000
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prevent_system_sleep
false
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primary_connection_host
anglemanagement.ddns.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
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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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-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation Memorandum-Circular No. JGS 038-22 PHILHEALTH.exe -
description ioc Process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA Memorandum-Circular No. JGS 038-22 PHILHEALTH.exe -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 3592 set thread context of 4040 3592 Memorandum-Circular No. JGS 038-22 PHILHEALTH.exe 102 -
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 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 2320 schtasks.exe 1976 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 10 IoCs
pid Process 3592 Memorandum-Circular No. JGS 038-22 PHILHEALTH.exe 3592 Memorandum-Circular No. JGS 038-22 PHILHEALTH.exe 4564 powershell.exe 4564 powershell.exe 4040 Memorandum-Circular No. JGS 038-22 PHILHEALTH.exe 4040 Memorandum-Circular No. JGS 038-22 PHILHEALTH.exe 4040 Memorandum-Circular No. JGS 038-22 PHILHEALTH.exe 4040 Memorandum-Circular No. JGS 038-22 PHILHEALTH.exe 4040 Memorandum-Circular No. JGS 038-22 PHILHEALTH.exe 4040 Memorandum-Circular No. JGS 038-22 PHILHEALTH.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 4040 Memorandum-Circular No. JGS 038-22 PHILHEALTH.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
description pid Process Token: SeDebugPrivilege 3592 Memorandum-Circular No. JGS 038-22 PHILHEALTH.exe Token: SeDebugPrivilege 4564 powershell.exe Token: SeDebugPrivilege 4040 Memorandum-Circular No. JGS 038-22 PHILHEALTH.exe -
Suspicious use of WriteProcessMemory 17 IoCs
description pid Process procid_target PID 3592 wrote to memory of 4564 3592 Memorandum-Circular No. JGS 038-22 PHILHEALTH.exe 98 PID 3592 wrote to memory of 4564 3592 Memorandum-Circular No. JGS 038-22 PHILHEALTH.exe 98 PID 3592 wrote to memory of 4564 3592 Memorandum-Circular No. JGS 038-22 PHILHEALTH.exe 98 PID 3592 wrote to memory of 2320 3592 Memorandum-Circular No. JGS 038-22 PHILHEALTH.exe 100 PID 3592 wrote to memory of 2320 3592 Memorandum-Circular No. JGS 038-22 PHILHEALTH.exe 100 PID 3592 wrote to memory of 2320 3592 Memorandum-Circular No. JGS 038-22 PHILHEALTH.exe 100 PID 3592 wrote to memory of 4040 3592 Memorandum-Circular No. JGS 038-22 PHILHEALTH.exe 102 PID 3592 wrote to memory of 4040 3592 Memorandum-Circular No. JGS 038-22 PHILHEALTH.exe 102 PID 3592 wrote to memory of 4040 3592 Memorandum-Circular No. JGS 038-22 PHILHEALTH.exe 102 PID 3592 wrote to memory of 4040 3592 Memorandum-Circular No. JGS 038-22 PHILHEALTH.exe 102 PID 3592 wrote to memory of 4040 3592 Memorandum-Circular No. JGS 038-22 PHILHEALTH.exe 102 PID 3592 wrote to memory of 4040 3592 Memorandum-Circular No. JGS 038-22 PHILHEALTH.exe 102 PID 3592 wrote to memory of 4040 3592 Memorandum-Circular No. JGS 038-22 PHILHEALTH.exe 102 PID 3592 wrote to memory of 4040 3592 Memorandum-Circular No. JGS 038-22 PHILHEALTH.exe 102 PID 4040 wrote to memory of 1976 4040 Memorandum-Circular No. JGS 038-22 PHILHEALTH.exe 103 PID 4040 wrote to memory of 1976 4040 Memorandum-Circular No. JGS 038-22 PHILHEALTH.exe 103 PID 4040 wrote to memory of 1976 4040 Memorandum-Circular No. JGS 038-22 PHILHEALTH.exe 103
Processes
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C:\Users\Admin\AppData\Local\Temp\Memorandum-Circular No. JGS 038-22 PHILHEALTH.exe"C:\Users\Admin\AppData\Local\Temp\Memorandum-Circular No. JGS 038-22 PHILHEALTH.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3592 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\oWfykWJZalfRC.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4564
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\oWfykWJZalfRC" /XML "C:\Users\Admin\AppData\Local\Temp\tmp515C.tmp"2⤵
- Creates scheduled task(s)
PID:2320
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C:\Users\Admin\AppData\Local\Temp\Memorandum-Circular No. JGS 038-22 PHILHEALTH.exe"C:\Users\Admin\AppData\Local\Temp\Memorandum-Circular No. JGS 038-22 PHILHEALTH.exe"2⤵
- Checks whether UAC is enabled
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4040 -
C:\Windows\SysWOW64\schtasks.exe"schtasks.exe" /create /f /tn "DHCP Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmp5757.tmp"3⤵
- Creates scheduled task(s)
PID:1976
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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_v4.0_32\UsageLogs\Memorandum-Circular No. JGS 038-22 PHILHEALTH.exe.log
Filesize1KB
MD5e08f822522c617a40840c62e4b0fb45e
SHA1ae516dca4da5234be6676d3f234c19ec55725be7
SHA256bd9d5e9f7fe6fcff17d873555d4077d15f7d6cdda1183e7f7d278b735ffe1fd7
SHA512894a7fb7bbc18ac6ba13378f58a7db80ad00d6080be9a66b01cae8e23e41d9d2d4cd53c1e20669356b73590c8a3ebfda4bdda3258f81240db56c4a81b7313fe4
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Filesize
1KB
MD573ffe75619bbf4ef329d369ec81dd55e
SHA161d6872dec59f801ab82b5e05d1946b7d64d1bb6
SHA256c380d36fefa512669c29e6b92c9a7e47fd9a92be51208416392e4152bcd2b937
SHA5126d012d715bfad5740d64c9cb03422d80a0495d652ecc9e9b58050b288758d9274d7864fff4aebd8df7f5bb3ad691ab455263477ef1b47069aa6470a5a04ad236
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Filesize
1KB
MD5f37c2d6ef41302019dfc34cebd727abf
SHA133ee51ad053aa1539a19405b94b5a36ae383ae71
SHA2560fe2c6341194fb407af7ca7cd4731066fd8b28f68ef67872af554878c0ec4b99
SHA5124da178543e299d7599a75d0349b1de810549bbbfccad59d6d725807535be68922b83e7c709861221eb8512054519956688daf8c01535dcb4af16ba640571d6e7