Analysis
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max time kernel
146s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20230220-en -
resource tags
arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system -
submitted
30-03-2023 13:15
Static task
static1
Behavioral task
behavioral1
Sample
IMG_005904564000.pdf.scr
Resource
win10-20230220-en
Behavioral task
behavioral2
Sample
IMG_005904564000.pdf.scr
Resource
win7-20230220-en
General
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Target
IMG_005904564000.pdf.scr
-
Size
1.1MB
-
MD5
a93ffd1a1e580fd21f01cd6751fa484e
-
SHA1
fe21d5e2acef0a23441370b8aafa0efe236a44d1
-
SHA256
1d0b1b40c071c1e9faade95ef7bcf471b6c98a25f262894aaebe63a5e43ec71a
-
SHA512
aa13d56ce06107dde34760c55e1b55909f0e1bb6528b6ae5cade1e9a572aa3b05285885ecbccdbaafcc193f691ca1ed8de97255d6a9e044dfc2ef91bb43b7915
-
SSDEEP
24576:lTbBv5rUaUUUUUJUUUUUUJD3pvm6tPw4coiuxF8WZQ6k+5zUMeJf:PBLUUUUUJUUUUUUF3pvFcoiydqwFUMYf
Malware Config
Extracted
nanocore
1.2.2.0
december2n.duckdns.org:40111
december2nd.ddns.net:40111
32ca6e6e-2fe0-4ef5-a3ea-5de451e80042
-
activate_away_mode
false
-
backup_connection_host
december2nd.ddns.net
- backup_dns_server
-
buffer_size
65538
-
build_time
2022-11-26T05:13:34.059050336Z
-
bypass_user_account_control
false
-
bypass_user_account_control_data
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
-
clear_access_control
false
-
clear_zone_identifier
false
-
connect_delay
4000
-
connection_port
40111
-
default_group
mama
-
enable_debug_mode
true
-
gc_threshold
1.0485772e+07
-
keep_alive_timeout
30000
-
keyboard_logging
false
-
lan_timeout
2500
-
max_packet_size
1.0485772e+07
-
mutex
32ca6e6e-2fe0-4ef5-a3ea-5de451e80042
-
mutex_timeout
5000
-
prevent_system_sleep
false
-
primary_connection_host
december2n.duckdns.org
- primary_dns_server
-
request_elevation
true
-
restart_delay
5000
-
run_delay
0
-
run_on_startup
false
-
set_critical_process
false
-
timeout_interval
5000
-
use_custom_dns_server
false
-
version
1.2.2.0
-
wan_timeout
8009
Signatures
-
Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
IMG_005904564000.pdf.scrwscript.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\Control Panel\International\Geo\Nation IMG_005904564000.pdf.scr Key value queried \REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\Control Panel\International\Geo\Nation wscript.exe -
Executes dropped EXE 2 IoCs
Processes:
lmtecwqo.pifRegSvcs.exepid process 4304 lmtecwqo.pif 2332 RegSvcs.exe -
Adds Run key to start application 2 TTPs 4 IoCs
Processes:
lmtecwqo.pifRegSvcs.exedescription ioc process Key created \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run lmtecwqo.pif Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Chrome = "C:\\Users\\Admin\\AppData\\Local\\Temp\\hgmk\\lmtecwqo.pif C:\\Users\\Admin\\AppData\\Local\\Temp\\hgmk\\wictuh.icm" lmtecwqo.pif Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\AutoUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\hgmk\\Update.vbs" lmtecwqo.pif Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\DPI Host = "C:\\Program Files (x86)\\DPI Host\\dpihost.exe" RegSvcs.exe -
Processes:
RegSvcs.exedescription ioc process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA RegSvcs.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
lmtecwqo.pifdescription pid process target process PID 4304 set thread context of 2332 4304 lmtecwqo.pif RegSvcs.exe -
Drops file in Program Files directory 2 IoCs
Processes:
RegSvcs.exedescription ioc process File created C:\Program Files (x86)\DPI Host\dpihost.exe RegSvcs.exe File opened for modification C:\Program Files (x86)\DPI Host\dpihost.exe RegSvcs.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
-
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 5012 schtasks.exe 3936 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 3 IoCs
Processes:
RegSvcs.exepid process 2332 RegSvcs.exe 2332 RegSvcs.exe 2332 RegSvcs.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
RegSvcs.exepid process 2332 RegSvcs.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
RegSvcs.exedescription pid process Token: SeDebugPrivilege 2332 RegSvcs.exe Token: SeDebugPrivilege 2332 RegSvcs.exe -
Suspicious use of WriteProcessMemory 17 IoCs
Processes:
IMG_005904564000.pdf.scrwscript.exelmtecwqo.pifRegSvcs.exedescription pid process target process PID 1920 wrote to memory of 4804 1920 IMG_005904564000.pdf.scr wscript.exe PID 1920 wrote to memory of 4804 1920 IMG_005904564000.pdf.scr wscript.exe PID 1920 wrote to memory of 4804 1920 IMG_005904564000.pdf.scr wscript.exe PID 4804 wrote to memory of 4304 4804 wscript.exe lmtecwqo.pif PID 4804 wrote to memory of 4304 4804 wscript.exe lmtecwqo.pif PID 4804 wrote to memory of 4304 4804 wscript.exe lmtecwqo.pif PID 4304 wrote to memory of 2332 4304 lmtecwqo.pif RegSvcs.exe PID 4304 wrote to memory of 2332 4304 lmtecwqo.pif RegSvcs.exe PID 4304 wrote to memory of 2332 4304 lmtecwqo.pif RegSvcs.exe PID 4304 wrote to memory of 2332 4304 lmtecwqo.pif RegSvcs.exe PID 4304 wrote to memory of 2332 4304 lmtecwqo.pif RegSvcs.exe PID 2332 wrote to memory of 5012 2332 RegSvcs.exe schtasks.exe PID 2332 wrote to memory of 5012 2332 RegSvcs.exe schtasks.exe PID 2332 wrote to memory of 5012 2332 RegSvcs.exe schtasks.exe PID 2332 wrote to memory of 3936 2332 RegSvcs.exe schtasks.exe PID 2332 wrote to memory of 3936 2332 RegSvcs.exe schtasks.exe PID 2332 wrote to memory of 3936 2332 RegSvcs.exe schtasks.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\IMG_005904564000.pdf.scr"C:\Users\Admin\AppData\Local\Temp\IMG_005904564000.pdf.scr" /S1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\wscript.exe"C:\Windows\System32\wscript.exe" Update-tb.t.vbe2⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\hgmk\lmtecwqo.pif"C:\Users\Admin\AppData\Local\Temp\hgmk\lmtecwqo.pif" wictuh.icm3⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\RegSvcs.exe"C:\Users\Admin\AppData\Local\Temp\RegSvcs.exe"4⤵
- Executes dropped EXE
- Adds Run key to start application
- Checks whether UAC is enabled
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\schtasks.exe"schtasks.exe" /create /f /tn "DPI Host" /xml "C:\Users\Admin\AppData\Local\Temp\tmpB2DA.tmp"5⤵
- Creates scheduled task(s)
-
C:\Windows\SysWOW64\schtasks.exe"schtasks.exe" /create /f /tn "DPI Host Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpB3B6.tmp"5⤵
- Creates scheduled task(s)
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
-
C:\Users\Admin\AppData\Local\Temp\RegSvcs.exeFilesize
44KB
MD59d352bc46709f0cb5ec974633a0c3c94
SHA11969771b2f022f9a86d77ac4d4d239becdf08d07
SHA2562c1eeb7097023c784c2bd040a2005a5070ed6f3a4abf13929377a9e39fab1390
SHA51213c714244ec56beeb202279e4109d59c2a43c3cf29f90a374a751c04fd472b45228ca5a0178f41109ed863dbd34e0879e4a21f5e38ae3d89559c57e6be990a9b
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C:\Users\Admin\AppData\Local\Temp\RegSvcs.exeFilesize
44KB
MD59d352bc46709f0cb5ec974633a0c3c94
SHA11969771b2f022f9a86d77ac4d4d239becdf08d07
SHA2562c1eeb7097023c784c2bd040a2005a5070ed6f3a4abf13929377a9e39fab1390
SHA51213c714244ec56beeb202279e4109d59c2a43c3cf29f90a374a751c04fd472b45228ca5a0178f41109ed863dbd34e0879e4a21f5e38ae3d89559c57e6be990a9b
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C:\Users\Admin\AppData\Local\Temp\hgmk\javkwma.binFilesize
36KB
MD5fba9fa136eb3ee633010d6e1a0876c19
SHA113e5595208ea1a90b33106571cb3ba5635bf1f14
SHA25663e89643afeba15b641600bbb1d0b709d49d2f8c0a3e188b2b45de987faea023
SHA51262a0d0ce5b3482ab72be9f1518ab05d8511557fb98ea8ee00a550522aa9ff9387ee8754b60178c857b19137a47fef468150c52ea56b146823cbae513ea53752e
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C:\Users\Admin\AppData\Local\Temp\hgmk\lmoi.mxfFilesize
397KB
MD547a3760694424f080062061971c9e2ae
SHA1107b8682b9322ee4886ade154c88c3cfebd24ae9
SHA2562a454fbe70bedf8e9df6bb9172fd14b941b675a3465a80bc9b0fe20b499ef4ad
SHA51231d92fc367c857fa71598fbb3346f292da574855d013a7cab0b5715eac80a7e2b37d863c92dcdb3b1ef34fc6e3529630460c9b23ba22e3d41e4553c5f3a3e655
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C:\Users\Admin\AppData\Local\Temp\hgmk\lmtecwqo.pifFilesize
1.1MB
MD54157c8447c088672662e6dc50079e7d8
SHA1d7e97005f9ebf2d9244c71eec90dae5db1a06e69
SHA256bd5b031272dea004a334994d75ebb257c68cf40243e797c3e847e7fe87393b81
SHA512f67e17a1ddfaf35e0deaee25ed6f127fe3eb140ee0f327780655784835bc18dfc82b148e6dcdd740668e621e0cf917cef27b052fcd95df97f68f0560ba559527
-
C:\Users\Admin\AppData\Local\Temp\hgmk\lmtecwqo.pifFilesize
1.1MB
MD54157c8447c088672662e6dc50079e7d8
SHA1d7e97005f9ebf2d9244c71eec90dae5db1a06e69
SHA256bd5b031272dea004a334994d75ebb257c68cf40243e797c3e847e7fe87393b81
SHA512f67e17a1ddfaf35e0deaee25ed6f127fe3eb140ee0f327780655784835bc18dfc82b148e6dcdd740668e621e0cf917cef27b052fcd95df97f68f0560ba559527
-
C:\Users\Admin\AppData\Local\Temp\hgmk\wictuh.icmFilesize
89.7MB
MD5656d183d6a5089e7a979925e163188ae
SHA139d38be4f45bf8be0a24f291cce941caf397a2c7
SHA2565c785d181a89e05f559208ab971845517f33234dfd0f27d3584fd1bc2b505739
SHA512896baf6ca3a3018dba20b5c0e98e10a1c3bc797fcc9d0bae20bd8698fdc7a702c187081076ef9ca9e71358f4324b214d00273b665ac6d7ee5ba1ac2e364f0795
-
C:\Users\Admin\AppData\Local\Temp\tmpB2DA.tmpFilesize
1KB
MD595aceabc58acad5d73372b0966ee1b35
SHA12293b7ad4793cf574b1a5220e85f329b5601040a
SHA2568d9642e1c3cd1e0b5d1763de2fb5e605ba593e5a918b93eec15acbc5dcc48fd4
SHA51200760dfc9d8caf357f0cee5336e5448a4cca18e32cc63e1a69c16e34fe00ea29acd5b2cf278e86c6f9c3e66a1b176d27ed927361848212e6bf1fade7d3d06e74
-
C:\Users\Admin\AppData\Local\Temp\tmpB3B6.tmpFilesize
1KB
MD5acd483df2f8ed28b2ad2bbcfe774f43f
SHA1e89d74ed4ba3824e652e1f4267bb8b60e3b50581
SHA2563ee6ae0dca5c4564f13e70f2a70ecbe979c9d9d575cd9762f15039aaa3823a86
SHA51259a9003c18f714c1ab14238bf2891b602ae3d8de49785a72e629648240176b29aabc741d7bdd244f06d5fe1a52c905b6288a0fe401f49df342200749a7de2092
-
C:\Users\Admin\AppData\Local\temp\hgmk\Update-tb.t.vbeFilesize
53KB
MD55b00fcce82d9a11427f01283a1bda93d
SHA1a048992545305eaee3b9edcc74fd973494b061a9
SHA2560b5bd27fb7eef72a52c340477447140cd43357605dd39db1d7d01914b2ae1a82
SHA5128dd0b00f79b6aff359c531b785c59cdeec25f3390f2ea352c09e0b7a197497a6af00910922bfc7fde3028659cb99e7fdede9ad318be7f72b657b6f857bdbcd39
-
memory/2332-213-0x0000000001150000-0x000000000118A000-memory.dmpFilesize
232KB
-
memory/2332-215-0x0000000005E90000-0x0000000005F22000-memory.dmpFilesize
584KB
-
memory/2332-216-0x0000000005F30000-0x0000000005FCC000-memory.dmpFilesize
624KB
-
memory/2332-217-0x0000000005D60000-0x0000000005D6A000-memory.dmpFilesize
40KB
-
memory/2332-218-0x0000000006170000-0x0000000006180000-memory.dmpFilesize
64KB
-
memory/2332-214-0x0000000006440000-0x00000000069E4000-memory.dmpFilesize
5.6MB
-
memory/2332-210-0x0000000001150000-0x000000000177C000-memory.dmpFilesize
6.2MB
-
memory/2332-226-0x0000000006170000-0x0000000006180000-memory.dmpFilesize
64KB