Analysis
-
max time kernel
149s -
max time network
153s -
platform
windows10_x64 -
resource
win10v20201028 -
submitted
19-01-2021 07:20
Static task
static1
Behavioral task
behavioral1
Sample
MEDUSI492126.pdf.exe
Resource
win7v20201028
General
-
Target
MEDUSI492126.pdf.exe
-
Size
920KB
-
MD5
3f350480fd99bd2e9c9b32c9fa1bf4e0
-
SHA1
7fda4a5e9610d3df93ec08c855e73a4b2b0570f4
-
SHA256
c914e1cead39ffb086bb87029bcea3673f8159087ef8cd7c1cf49eceba97ee07
-
SHA512
ca55f5a74ee282e988654b01c500aa93ca51bbef415255e1c850739c603b00f777a86b13935c56efcaef0850e623eacb2c3ea29773897cd88146e16c4c26a3d9
Malware Config
Extracted
nanocore
1.2.2.0
185.162.88.26:20911
fenixalec.ddns.net:20911
4c844ad7-de78-4c04-815b-d468ebb89811
-
activate_away_mode
true
-
backup_connection_host
fenixalec.ddns.net
-
backup_dns_server
8.8.4.4
-
buffer_size
65535
-
build_time
2020-10-25T21:31:56.793896536Z
-
bypass_user_account_control
true
- bypass_user_account_control_data
-
clear_access_control
true
-
clear_zone_identifier
true
-
connect_delay
4000
-
connection_port
20911
-
default_group
2021 GREATEST
-
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
4c844ad7-de78-4c04-815b-d468ebb89811
-
mutex_timeout
5000
-
prevent_system_sleep
true
-
primary_connection_host
185.162.88.26
-
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
-
Executes dropped EXE 2 IoCs
Processes:
hgjgfddsxaz.exeInstallUtil.exepid process 3504 hgjgfddsxaz.exe 1776 InstallUtil.exe -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
reg.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Windows\CurrentVersion\Run\retyujik = "C:\\Users\\Admin\\AppData\\Roaming\\hgjgfddsxaz.exe" reg.exe Key created \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Windows\CurrentVersion\Run reg.exe -
Processes:
InstallUtil.exedescription ioc process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA InstallUtil.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
hgjgfddsxaz.exedescription pid process target process PID 3504 set thread context of 1776 3504 hgjgfddsxaz.exe InstallUtil.exe -
Suspicious behavior: EnumeratesProcesses 23 IoCs
Processes:
MEDUSI492126.pdf.exehgjgfddsxaz.exeInstallUtil.exepid process 616 MEDUSI492126.pdf.exe 616 MEDUSI492126.pdf.exe 616 MEDUSI492126.pdf.exe 616 MEDUSI492126.pdf.exe 616 MEDUSI492126.pdf.exe 616 MEDUSI492126.pdf.exe 616 MEDUSI492126.pdf.exe 616 MEDUSI492126.pdf.exe 616 MEDUSI492126.pdf.exe 616 MEDUSI492126.pdf.exe 616 MEDUSI492126.pdf.exe 616 MEDUSI492126.pdf.exe 616 MEDUSI492126.pdf.exe 616 MEDUSI492126.pdf.exe 616 MEDUSI492126.pdf.exe 3504 hgjgfddsxaz.exe 3504 hgjgfddsxaz.exe 1776 InstallUtil.exe 1776 InstallUtil.exe 1776 InstallUtil.exe 1776 InstallUtil.exe 1776 InstallUtil.exe 1776 InstallUtil.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
InstallUtil.exepid process 1776 InstallUtil.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
Processes:
MEDUSI492126.pdf.exehgjgfddsxaz.exeInstallUtil.exedescription pid process Token: SeDebugPrivilege 616 MEDUSI492126.pdf.exe Token: SeDebugPrivilege 3504 hgjgfddsxaz.exe Token: SeDebugPrivilege 1776 InstallUtil.exe -
Suspicious use of WriteProcessMemory 17 IoCs
Processes:
MEDUSI492126.pdf.execmd.exehgjgfddsxaz.exedescription pid process target process PID 616 wrote to memory of 904 616 MEDUSI492126.pdf.exe cmd.exe PID 616 wrote to memory of 904 616 MEDUSI492126.pdf.exe cmd.exe PID 616 wrote to memory of 904 616 MEDUSI492126.pdf.exe cmd.exe PID 904 wrote to memory of 3748 904 cmd.exe reg.exe PID 904 wrote to memory of 3748 904 cmd.exe reg.exe PID 904 wrote to memory of 3748 904 cmd.exe reg.exe PID 616 wrote to memory of 3504 616 MEDUSI492126.pdf.exe hgjgfddsxaz.exe PID 616 wrote to memory of 3504 616 MEDUSI492126.pdf.exe hgjgfddsxaz.exe PID 616 wrote to memory of 3504 616 MEDUSI492126.pdf.exe hgjgfddsxaz.exe PID 3504 wrote to memory of 1776 3504 hgjgfddsxaz.exe InstallUtil.exe PID 3504 wrote to memory of 1776 3504 hgjgfddsxaz.exe InstallUtil.exe PID 3504 wrote to memory of 1776 3504 hgjgfddsxaz.exe InstallUtil.exe PID 3504 wrote to memory of 1776 3504 hgjgfddsxaz.exe InstallUtil.exe PID 3504 wrote to memory of 1776 3504 hgjgfddsxaz.exe InstallUtil.exe PID 3504 wrote to memory of 1776 3504 hgjgfddsxaz.exe InstallUtil.exe PID 3504 wrote to memory of 1776 3504 hgjgfddsxaz.exe InstallUtil.exe PID 3504 wrote to memory of 1776 3504 hgjgfddsxaz.exe InstallUtil.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\MEDUSI492126.pdf.exe"C:\Users\Admin\AppData\Local\Temp\MEDUSI492126.pdf.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\cmd.exe"cmd.exe" /c REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "retyujik" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\hgjgfddsxaz.exe"2⤵
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\reg.exeREG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "retyujik" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\hgjgfddsxaz.exe"3⤵
- Adds Run key to start application
-
C:\Users\Admin\AppData\Roaming\hgjgfddsxaz.exe"C:\Users\Admin\AppData\Roaming\hgjgfddsxaz.exe"2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"3⤵
- Executes dropped EXE
- Checks whether UAC is enabled
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
-
C:\Users\Admin\AppData\Local\Temp\InstallUtil.exeMD5
91c9ae9c9a17a9db5e08b120e668c74c
SHA150770954c1ceb0bb6f1d5d3f2de2a0a065773723
SHA256e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f
SHA512ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e
-
C:\Users\Admin\AppData\Local\Temp\InstallUtil.exeMD5
91c9ae9c9a17a9db5e08b120e668c74c
SHA150770954c1ceb0bb6f1d5d3f2de2a0a065773723
SHA256e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f
SHA512ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e
-
C:\Users\Admin\AppData\Roaming\hgjgfddsxaz.exeMD5
3f350480fd99bd2e9c9b32c9fa1bf4e0
SHA17fda4a5e9610d3df93ec08c855e73a4b2b0570f4
SHA256c914e1cead39ffb086bb87029bcea3673f8159087ef8cd7c1cf49eceba97ee07
SHA512ca55f5a74ee282e988654b01c500aa93ca51bbef415255e1c850739c603b00f777a86b13935c56efcaef0850e623eacb2c3ea29773897cd88146e16c4c26a3d9
-
C:\Users\Admin\AppData\Roaming\hgjgfddsxaz.exeMD5
3f350480fd99bd2e9c9b32c9fa1bf4e0
SHA17fda4a5e9610d3df93ec08c855e73a4b2b0570f4
SHA256c914e1cead39ffb086bb87029bcea3673f8159087ef8cd7c1cf49eceba97ee07
SHA512ca55f5a74ee282e988654b01c500aa93ca51bbef415255e1c850739c603b00f777a86b13935c56efcaef0850e623eacb2c3ea29773897cd88146e16c4c26a3d9
-
memory/616-9-0x0000000007CC0000-0x0000000007CC1000-memory.dmpFilesize
4KB
-
memory/616-8-0x0000000005260000-0x0000000005261000-memory.dmpFilesize
4KB
-
memory/616-7-0x0000000005240000-0x000000000525E000-memory.dmpFilesize
120KB
-
memory/616-2-0x0000000073160000-0x000000007384E000-memory.dmpFilesize
6.9MB
-
memory/616-12-0x0000000005591000-0x0000000005592000-memory.dmpFilesize
4KB
-
memory/616-6-0x0000000005590000-0x0000000005591000-memory.dmpFilesize
4KB
-
memory/616-5-0x0000000005330000-0x0000000005331000-memory.dmpFilesize
4KB
-
memory/616-3-0x0000000000A00000-0x0000000000A01000-memory.dmpFilesize
4KB
-
memory/904-10-0x0000000000000000-mapping.dmp
-
memory/1776-43-0x00000000064D0000-0x00000000064E5000-memory.dmpFilesize
84KB
-
memory/1776-48-0x0000000006550000-0x000000000655D000-memory.dmpFilesize
52KB
-
memory/1776-54-0x00000000067C0000-0x00000000067C1000-memory.dmpFilesize
4KB
-
memory/1776-53-0x00000000065E0000-0x00000000065EF000-memory.dmpFilesize
60KB
-
memory/1776-52-0x00000000065A0000-0x00000000065C9000-memory.dmpFilesize
164KB
-
memory/1776-27-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
-
memory/1776-28-0x000000000041E792-mapping.dmp
-
memory/1776-51-0x0000000006590000-0x000000000659A000-memory.dmpFilesize
40KB
-
memory/1776-50-0x0000000006570000-0x000000000657F000-memory.dmpFilesize
60KB
-
memory/1776-31-0x0000000073160000-0x000000007384E000-memory.dmpFilesize
6.9MB
-
memory/1776-34-0x0000000005600000-0x0000000005601000-memory.dmpFilesize
4KB
-
memory/1776-37-0x00000000050C0000-0x00000000050C1000-memory.dmpFilesize
4KB
-
memory/1776-38-0x0000000005490000-0x0000000005491000-memory.dmpFilesize
4KB
-
memory/1776-39-0x00000000051F0000-0x00000000051F5000-memory.dmpFilesize
20KB
-
memory/1776-40-0x0000000005460000-0x0000000005479000-memory.dmpFilesize
100KB
-
memory/1776-41-0x00000000055E0000-0x00000000055E3000-memory.dmpFilesize
12KB
-
memory/1776-42-0x00000000064C0000-0x00000000064CD000-memory.dmpFilesize
52KB
-
memory/1776-49-0x0000000006560000-0x0000000006569000-memory.dmpFilesize
36KB
-
memory/1776-44-0x0000000006500000-0x0000000006506000-memory.dmpFilesize
24KB
-
memory/1776-45-0x0000000006520000-0x000000000652C000-memory.dmpFilesize
48KB
-
memory/1776-46-0x0000000006530000-0x0000000006537000-memory.dmpFilesize
28KB
-
memory/1776-47-0x0000000006540000-0x0000000006546000-memory.dmpFilesize
24KB
-
memory/3504-23-0x0000000004EF0000-0x0000000004EF1000-memory.dmpFilesize
4KB
-
memory/3504-13-0x0000000000000000-mapping.dmp
-
memory/3504-16-0x0000000073160000-0x000000007384E000-memory.dmpFilesize
6.9MB
-
memory/3504-26-0x0000000004EF1000-0x0000000004EF2000-memory.dmpFilesize
4KB
-
memory/3504-25-0x00000000046E0000-0x00000000046E1000-memory.dmpFilesize
4KB
-
memory/3504-24-0x0000000004D80000-0x0000000004D8B000-memory.dmpFilesize
44KB
-
memory/3748-11-0x0000000000000000-mapping.dmp