Analysis
-
max time kernel
147s -
max time network
152s -
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 01:39
Static task
static1
Behavioral task
behavioral1
Sample
dc632387d0761b880e99669d0351799c9bed07e9bb3f806ad51fec32bfd0bb8c.exe
Resource
win7-20230220-en
General
-
Target
dc632387d0761b880e99669d0351799c9bed07e9bb3f806ad51fec32bfd0bb8c.exe
-
Size
1.1MB
-
MD5
8903abf7f27153d44bc49dd7875c0eb6
-
SHA1
67919e9c5babca471da12c881809c9d105670fba
-
SHA256
dc632387d0761b880e99669d0351799c9bed07e9bb3f806ad51fec32bfd0bb8c
-
SHA512
d0b7902a79332bcfa64e57fc4bce1c3e76250d78bc05297a528d415470e720e1646824e8fc177547b61840fe0a60496841e71fe6ed744b81c576c2af6bf35b95
-
SSDEEP
24576:lTbBv5rUaUUUUUJUUUUUUJDPpvm6to+dLn1CHm8WZQ6k+5zUMeC:PBLUUUUUJUUUUUUFPpv2+9n1ymdqwFUQ
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:
dc632387d0761b880e99669d0351799c9bed07e9bb3f806ad51fec32bfd0bb8c.exewscript.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\Control Panel\International\Geo\Nation dc632387d0761b880e99669d0351799c9bed07e9bb3f806ad51fec32bfd0bb8c.exe Key value queried \REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\Control Panel\International\Geo\Nation wscript.exe -
Executes dropped EXE 2 IoCs
Processes:
uflbpckkn.pifRegSvcs.exepid process 5064 uflbpckkn.pif 1212 RegSvcs.exe -
Adds Run key to start application 2 TTPs 4 IoCs
Processes:
uflbpckkn.pifRegSvcs.exedescription ioc process Key created \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run uflbpckkn.pif Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Chrome = "C:\\Users\\Admin\\AppData\\Local\\Temp\\ulfi\\UFLBPC~1.PIF C:\\Users\\Admin\\AppData\\Local\\Temp\\ulfi\\acac.icm" uflbpckkn.pif Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\AutoUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\ulfi\\Update.vbs" uflbpckkn.pif Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\UPNP Host = "C:\\Program Files (x86)\\UPNP Host\\upnphost.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:
uflbpckkn.pifdescription pid process target process PID 5064 set thread context of 1212 5064 uflbpckkn.pif RegSvcs.exe -
Drops file in Program Files directory 2 IoCs
Processes:
RegSvcs.exedescription ioc process File created C:\Program Files (x86)\UPNP Host\upnphost.exe RegSvcs.exe File opened for modification C:\Program Files (x86)\UPNP Host\upnphost.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.
-
Suspicious behavior: EnumeratesProcesses 3 IoCs
Processes:
RegSvcs.exepid process 1212 RegSvcs.exe 1212 RegSvcs.exe 1212 RegSvcs.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
RegSvcs.exepid process 1212 RegSvcs.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
RegSvcs.exedescription pid process Token: SeDebugPrivilege 1212 RegSvcs.exe Token: SeDebugPrivilege 1212 RegSvcs.exe -
Suspicious use of WriteProcessMemory 17 IoCs
Processes:
dc632387d0761b880e99669d0351799c9bed07e9bb3f806ad51fec32bfd0bb8c.exewscript.exeuflbpckkn.pifRegSvcs.exedescription pid process target process PID 3260 wrote to memory of 1900 3260 dc632387d0761b880e99669d0351799c9bed07e9bb3f806ad51fec32bfd0bb8c.exe wscript.exe PID 3260 wrote to memory of 1900 3260 dc632387d0761b880e99669d0351799c9bed07e9bb3f806ad51fec32bfd0bb8c.exe wscript.exe PID 3260 wrote to memory of 1900 3260 dc632387d0761b880e99669d0351799c9bed07e9bb3f806ad51fec32bfd0bb8c.exe wscript.exe PID 1900 wrote to memory of 5064 1900 wscript.exe uflbpckkn.pif PID 1900 wrote to memory of 5064 1900 wscript.exe uflbpckkn.pif PID 1900 wrote to memory of 5064 1900 wscript.exe uflbpckkn.pif PID 5064 wrote to memory of 1212 5064 uflbpckkn.pif RegSvcs.exe PID 5064 wrote to memory of 1212 5064 uflbpckkn.pif RegSvcs.exe PID 5064 wrote to memory of 1212 5064 uflbpckkn.pif RegSvcs.exe PID 5064 wrote to memory of 1212 5064 uflbpckkn.pif RegSvcs.exe PID 5064 wrote to memory of 1212 5064 uflbpckkn.pif RegSvcs.exe PID 1212 wrote to memory of 744 1212 RegSvcs.exe schtasks.exe PID 1212 wrote to memory of 744 1212 RegSvcs.exe schtasks.exe PID 1212 wrote to memory of 744 1212 RegSvcs.exe schtasks.exe PID 1212 wrote to memory of 1484 1212 RegSvcs.exe schtasks.exe PID 1212 wrote to memory of 1484 1212 RegSvcs.exe schtasks.exe PID 1212 wrote to memory of 1484 1212 RegSvcs.exe schtasks.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\dc632387d0761b880e99669d0351799c9bed07e9bb3f806ad51fec32bfd0bb8c.exe"C:\Users\Admin\AppData\Local\Temp\dc632387d0761b880e99669d0351799c9bed07e9bb3f806ad51fec32bfd0bb8c.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\wscript.exe"C:\Windows\System32\wscript.exe" Update-ea.i.vbe2⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\ulfi\uflbpckkn.pif"C:\Users\Admin\AppData\Local\Temp\ulfi\uflbpckkn.pif" acac.icm3⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
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 "UPNP Host" /xml "C:\Users\Admin\AppData\Local\Temp\tmpC345.tmp"5⤵
- Creates scheduled task(s)
-
C:\Windows\SysWOW64\schtasks.exe"schtasks.exe" /create /f /tn "UPNP Host Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpC440.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
-
C:\Users\Admin\AppData\Local\Temp\RegSvcs.exeFilesize
44KB
MD59d352bc46709f0cb5ec974633a0c3c94
SHA11969771b2f022f9a86d77ac4d4d239becdf08d07
SHA2562c1eeb7097023c784c2bd040a2005a5070ed6f3a4abf13929377a9e39fab1390
SHA51213c714244ec56beeb202279e4109d59c2a43c3cf29f90a374a751c04fd472b45228ca5a0178f41109ed863dbd34e0879e4a21f5e38ae3d89559c57e6be990a9b
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C:\Users\Admin\AppData\Local\Temp\tmpC345.tmpFilesize
1KB
MD595aceabc58acad5d73372b0966ee1b35
SHA12293b7ad4793cf574b1a5220e85f329b5601040a
SHA2568d9642e1c3cd1e0b5d1763de2fb5e605ba593e5a918b93eec15acbc5dcc48fd4
SHA51200760dfc9d8caf357f0cee5336e5448a4cca18e32cc63e1a69c16e34fe00ea29acd5b2cf278e86c6f9c3e66a1b176d27ed927361848212e6bf1fade7d3d06e74
-
C:\Users\Admin\AppData\Local\Temp\tmpC440.tmpFilesize
1KB
MD588bf0bc1e20b64333f39f1cf2085a729
SHA16d8eeef3d8f118ded3f2f1dc55ffaa71ee5d7ad8
SHA256393c769644b1c640753a6bab46cd6c8cbaf984d116d6f7dd1a071d5f2afa42f9
SHA51274dfacf7443b7b08da09d40bca1b2a99e7dc44d9d5289f86e1b718f3268b1b11e85c04eb8dd0a5e95788726f09678051a27902d509f015a5ff6609c7d8ec9aba
-
C:\Users\Admin\AppData\Local\Temp\ulfi\acac.icmFilesize
95.9MB
MD5e8a33aaf79c3f76c630c61c6f5f0b31a
SHA1993bdb82effe95425f90e641109423bdac297877
SHA2568cca194384c2997d1de62de975ba07081fabf02d0b52667c5eaa3f28894e5dcd
SHA51205c4473f62d417686b5f954639c5d7bfe49fbaab3c63188f3085353f3ae40fc0e34dab6ad815d32af535800eaabab74a0c401acc96c345bf5eea74261731f648
-
C:\Users\Admin\AppData\Local\Temp\ulfi\fvwo.khuFilesize
397KB
MD547a3760694424f080062061971c9e2ae
SHA1107b8682b9322ee4886ade154c88c3cfebd24ae9
SHA2562a454fbe70bedf8e9df6bb9172fd14b941b675a3465a80bc9b0fe20b499ef4ad
SHA51231d92fc367c857fa71598fbb3346f292da574855d013a7cab0b5715eac80a7e2b37d863c92dcdb3b1ef34fc6e3529630460c9b23ba22e3d41e4553c5f3a3e655
-
C:\Users\Admin\AppData\Local\Temp\ulfi\lxskid.exeFilesize
36KB
MD52435592ed0b9f8d194c83959963dc3f7
SHA138f7a2ae638a16ba3795a62f14e8dbfafd3773d9
SHA2562810ae0246ac63c47e79965e2873e9e5680e86cadfad49d786a6d9487959503a
SHA512e9fa279c187ddc879df2adb45ffb4d57528737921a6dd6c8b071e5cfa0049987b6a31b05b110c4b33c6123c8a6114d7e6348ffa80f020124f46235a0336f8ef9
-
C:\Users\Admin\AppData\Local\Temp\ulfi\uflbpckkn.pifFilesize
1.1MB
MD5a2e8bd62287be6d626673abaf4a08ee1
SHA1356414442272116ead8fd4cbf846e3764cbb7b43
SHA256cd6fa898bfad0a9f9571b7529c3dfbcbefc2e7bd74cb534920d744a1e7b1c280
SHA51298effa2b34f97ebfa0bd5178868774b9a6b435179bd6a2bca89081121c17b1a073b46bbd983cec0a1dad5f9491a2707649b0c3082d1b012fff4a78fee94262a1
-
C:\Users\Admin\AppData\Local\Temp\ulfi\uflbpckkn.pifFilesize
1.1MB
MD5a2e8bd62287be6d626673abaf4a08ee1
SHA1356414442272116ead8fd4cbf846e3764cbb7b43
SHA256cd6fa898bfad0a9f9571b7529c3dfbcbefc2e7bd74cb534920d744a1e7b1c280
SHA51298effa2b34f97ebfa0bd5178868774b9a6b435179bd6a2bca89081121c17b1a073b46bbd983cec0a1dad5f9491a2707649b0c3082d1b012fff4a78fee94262a1
-
C:\Users\Admin\AppData\Local\temp\ulfi\Update-ea.i.vbeFilesize
90KB
MD53318cb58d4af65922182b7ed858c6ade
SHA1c088cc1d16ee3193e37024469b62dd3aaaf9e6f3
SHA2569343cabbc583472118ef788156f745aba257309f5374c54ec52e4ef04048174a
SHA51200a4505c4d35524a4b2c0a133aabfd30009e0bb3715774dc04c31122bce83d530026178d136e8fdb2903d891e603ae9e74727b3c9441cbe9bd63785f91a9f24f
-
memory/1212-198-0x00000000013A0000-0x0000000001A8A000-memory.dmpFilesize
6.9MB
-
memory/1212-201-0x00000000013A0000-0x00000000013DA000-memory.dmpFilesize
232KB
-
memory/1212-202-0x0000000006540000-0x0000000006AE4000-memory.dmpFilesize
5.6MB
-
memory/1212-203-0x0000000006070000-0x0000000006102000-memory.dmpFilesize
584KB
-
memory/1212-204-0x00000000061B0000-0x000000000624C000-memory.dmpFilesize
624KB
-
memory/1212-205-0x0000000006130000-0x000000000613A000-memory.dmpFilesize
40KB
-
memory/1212-213-0x0000000006430000-0x0000000006440000-memory.dmpFilesize
64KB
-
memory/1212-214-0x0000000006430000-0x0000000006440000-memory.dmpFilesize
64KB