Analysis
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max time kernel
147s -
max time network
155s -
platform
windows7_x64 -
resource
win7-20220901-en -
resource tags
arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-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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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 1600 set thread context of 1552 1600 Memorandum-Circular No. JGS 038-22 PHILHEALTH.exe 31 -
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 1800 schtasks.exe 1080 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 7 IoCs
pid Process 1600 Memorandum-Circular No. JGS 038-22 PHILHEALTH.exe 1600 Memorandum-Circular No. JGS 038-22 PHILHEALTH.exe 1552 Memorandum-Circular No. JGS 038-22 PHILHEALTH.exe 1552 Memorandum-Circular No. JGS 038-22 PHILHEALTH.exe 568 powershell.exe 1552 Memorandum-Circular No. JGS 038-22 PHILHEALTH.exe 1552 Memorandum-Circular No. JGS 038-22 PHILHEALTH.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 1552 Memorandum-Circular No. JGS 038-22 PHILHEALTH.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
description pid Process Token: SeDebugPrivilege 1600 Memorandum-Circular No. JGS 038-22 PHILHEALTH.exe Token: SeDebugPrivilege 1552 Memorandum-Circular No. JGS 038-22 PHILHEALTH.exe Token: SeDebugPrivilege 568 powershell.exe -
Suspicious use of WriteProcessMemory 21 IoCs
description pid Process procid_target PID 1600 wrote to memory of 568 1600 Memorandum-Circular No. JGS 038-22 PHILHEALTH.exe 27 PID 1600 wrote to memory of 568 1600 Memorandum-Circular No. JGS 038-22 PHILHEALTH.exe 27 PID 1600 wrote to memory of 568 1600 Memorandum-Circular No. JGS 038-22 PHILHEALTH.exe 27 PID 1600 wrote to memory of 568 1600 Memorandum-Circular No. JGS 038-22 PHILHEALTH.exe 27 PID 1600 wrote to memory of 1800 1600 Memorandum-Circular No. JGS 038-22 PHILHEALTH.exe 29 PID 1600 wrote to memory of 1800 1600 Memorandum-Circular No. JGS 038-22 PHILHEALTH.exe 29 PID 1600 wrote to memory of 1800 1600 Memorandum-Circular No. JGS 038-22 PHILHEALTH.exe 29 PID 1600 wrote to memory of 1800 1600 Memorandum-Circular No. JGS 038-22 PHILHEALTH.exe 29 PID 1600 wrote to memory of 1552 1600 Memorandum-Circular No. JGS 038-22 PHILHEALTH.exe 31 PID 1600 wrote to memory of 1552 1600 Memorandum-Circular No. JGS 038-22 PHILHEALTH.exe 31 PID 1600 wrote to memory of 1552 1600 Memorandum-Circular No. JGS 038-22 PHILHEALTH.exe 31 PID 1600 wrote to memory of 1552 1600 Memorandum-Circular No. JGS 038-22 PHILHEALTH.exe 31 PID 1600 wrote to memory of 1552 1600 Memorandum-Circular No. JGS 038-22 PHILHEALTH.exe 31 PID 1600 wrote to memory of 1552 1600 Memorandum-Circular No. JGS 038-22 PHILHEALTH.exe 31 PID 1600 wrote to memory of 1552 1600 Memorandum-Circular No. JGS 038-22 PHILHEALTH.exe 31 PID 1600 wrote to memory of 1552 1600 Memorandum-Circular No. JGS 038-22 PHILHEALTH.exe 31 PID 1600 wrote to memory of 1552 1600 Memorandum-Circular No. JGS 038-22 PHILHEALTH.exe 31 PID 1552 wrote to memory of 1080 1552 Memorandum-Circular No. JGS 038-22 PHILHEALTH.exe 32 PID 1552 wrote to memory of 1080 1552 Memorandum-Circular No. JGS 038-22 PHILHEALTH.exe 32 PID 1552 wrote to memory of 1080 1552 Memorandum-Circular No. JGS 038-22 PHILHEALTH.exe 32 PID 1552 wrote to memory of 1080 1552 Memorandum-Circular No. JGS 038-22 PHILHEALTH.exe 32
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⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1600 -
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:568
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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\tmpC1AB.tmp"2⤵
- Creates scheduled task(s)
PID:1800
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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:1552 -
C:\Windows\SysWOW64\schtasks.exe"schtasks.exe" /create /f /tn "AGP Manager" /xml "C:\Users\Admin\AppData\Local\Temp\tmpC775.tmp"3⤵
- Creates scheduled task(s)
PID:1080
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
1KB
MD5543f7fd64f5b11b7a899512b133262d7
SHA1c3507ba946f52a178df028a59fff66f6c20c5a4f
SHA2563a9144df60c1fcd4e43ead5dff6f145853fa00db105a09d62cfdaab44ecb4b2a
SHA512c94e01d239cbc442775bf891b39b60728f62a9f9fcfc3cd1c51e4f389cd3f8aabcb02a018e259998db9c04f1c56f880cd80af3ddb753da6291ca34973eb9f16f
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Filesize
1KB
MD5f37c2d6ef41302019dfc34cebd727abf
SHA133ee51ad053aa1539a19405b94b5a36ae383ae71
SHA2560fe2c6341194fb407af7ca7cd4731066fd8b28f68ef67872af554878c0ec4b99
SHA5124da178543e299d7599a75d0349b1de810549bbbfccad59d6d725807535be68922b83e7c709861221eb8512054519956688daf8c01535dcb4af16ba640571d6e7