Analysis
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max time kernel
149s -
max time network
155s -
platform
windows10_x64 -
resource
win10v20201028 -
submitted
21-01-2021 06:16
Static task
static1
Behavioral task
behavioral1
Sample
PO#4018-308875.exe
Resource
win7v20201028
Behavioral task
behavioral2
Sample
PO#4018-308875.exe
Resource
win10v20201028
General
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Target
PO#4018-308875.exe
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Size
1.1MB
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MD5
37bb301570706e9b086c26c16e7cdb83
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SHA1
9ff8d1dcca0c34f62113cd7f0a5028923299cd27
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SHA256
4e599dda2d5d0f3cad7ac5451a39cb1c4934ea0f10fd9163e82711455aaf3efd
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SHA512
215f8b9165a273d12cc2bbf2f74172ffad4d2fef3b56b48dedac18b5785b12c44a358b0b701ce2099472d9a8fe20ca35686801731209db2276dac5d39aa864c8
Malware Config
Extracted
nanocore
1.2.2.0
185.162.88.26:20911
fenixalec.ddns.net:20911
4c844ad7-de78-4c04-815b-d468ebb89811
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activate_away_mode
true
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backup_connection_host
fenixalec.ddns.net
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backup_dns_server
8.8.4.4
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buffer_size
65535
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build_time
2020-10-25T21:31:56.793896536Z
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bypass_user_account_control
true
- bypass_user_account_control_data
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clear_access_control
true
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clear_zone_identifier
true
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connect_delay
4000
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connection_port
20911
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default_group
2021 GREATEST
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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
4c844ad7-de78-4c04-815b-d468ebb89811
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mutex_timeout
5000
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prevent_system_sleep
true
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primary_connection_host
185.162.88.26
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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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Executes dropped EXE 2 IoCs
Processes:
edjdjdn.exeInstallUtil.exepid process 1092 edjdjdn.exe 3900 InstallUtil.exe -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
reg.exedescription ioc process Key created \REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Windows\CurrentVersion\Run reg.exe Set value (str) \REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Windows\CurrentVersion\Run\vsg63637 = "C:\\Users\\Admin\\AppData\\Roaming\\edjdjdn.exe" reg.exe -
Processes:
InstallUtil.exedescription ioc process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA InstallUtil.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Suspicious use of SetThreadContext 1 IoCs
Processes:
edjdjdn.exedescription pid process target process PID 1092 set thread context of 3900 1092 edjdjdn.exe InstallUtil.exe -
Suspicious behavior: EnumeratesProcesses 20 IoCs
Processes:
PO#4018-308875.exeedjdjdn.exeInstallUtil.exepid process 1056 PO#4018-308875.exe 1056 PO#4018-308875.exe 1056 PO#4018-308875.exe 1056 PO#4018-308875.exe 1056 PO#4018-308875.exe 1056 PO#4018-308875.exe 1056 PO#4018-308875.exe 1056 PO#4018-308875.exe 1056 PO#4018-308875.exe 1056 PO#4018-308875.exe 1056 PO#4018-308875.exe 1056 PO#4018-308875.exe 1056 PO#4018-308875.exe 1056 PO#4018-308875.exe 1056 PO#4018-308875.exe 1092 edjdjdn.exe 1092 edjdjdn.exe 3900 InstallUtil.exe 3900 InstallUtil.exe 3900 InstallUtil.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
InstallUtil.exepid process 3900 InstallUtil.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
Processes:
PO#4018-308875.exeedjdjdn.exeInstallUtil.exedescription pid process Token: SeDebugPrivilege 1056 PO#4018-308875.exe Token: SeDebugPrivilege 1092 edjdjdn.exe Token: SeDebugPrivilege 3900 InstallUtil.exe -
Suspicious use of WriteProcessMemory 17 IoCs
Processes:
PO#4018-308875.execmd.exeedjdjdn.exedescription pid process target process PID 1056 wrote to memory of 976 1056 PO#4018-308875.exe cmd.exe PID 1056 wrote to memory of 976 1056 PO#4018-308875.exe cmd.exe PID 1056 wrote to memory of 976 1056 PO#4018-308875.exe cmd.exe PID 976 wrote to memory of 2420 976 cmd.exe reg.exe PID 976 wrote to memory of 2420 976 cmd.exe reg.exe PID 976 wrote to memory of 2420 976 cmd.exe reg.exe PID 1056 wrote to memory of 1092 1056 PO#4018-308875.exe edjdjdn.exe PID 1056 wrote to memory of 1092 1056 PO#4018-308875.exe edjdjdn.exe PID 1056 wrote to memory of 1092 1056 PO#4018-308875.exe edjdjdn.exe PID 1092 wrote to memory of 3900 1092 edjdjdn.exe InstallUtil.exe PID 1092 wrote to memory of 3900 1092 edjdjdn.exe InstallUtil.exe PID 1092 wrote to memory of 3900 1092 edjdjdn.exe InstallUtil.exe PID 1092 wrote to memory of 3900 1092 edjdjdn.exe InstallUtil.exe PID 1092 wrote to memory of 3900 1092 edjdjdn.exe InstallUtil.exe PID 1092 wrote to memory of 3900 1092 edjdjdn.exe InstallUtil.exe PID 1092 wrote to memory of 3900 1092 edjdjdn.exe InstallUtil.exe PID 1092 wrote to memory of 3900 1092 edjdjdn.exe InstallUtil.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\PO#4018-308875.exe"C:\Users\Admin\AppData\Local\Temp\PO#4018-308875.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"cmd.exe" /c REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "vsg63637" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\edjdjdn.exe"2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\reg.exeREG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "vsg63637" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\edjdjdn.exe"3⤵
- Adds Run key to start application
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C:\Users\Admin\AppData\Roaming\edjdjdn.exe"C:\Users\Admin\AppData\Roaming\edjdjdn.exe"2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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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
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Downloads
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C:\Users\Admin\AppData\Local\Temp\InstallUtil.exeMD5
91c9ae9c9a17a9db5e08b120e668c74c
SHA150770954c1ceb0bb6f1d5d3f2de2a0a065773723
SHA256e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f
SHA512ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e
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C:\Users\Admin\AppData\Local\Temp\InstallUtil.exeMD5
91c9ae9c9a17a9db5e08b120e668c74c
SHA150770954c1ceb0bb6f1d5d3f2de2a0a065773723
SHA256e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f
SHA512ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e
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C:\Users\Admin\AppData\Roaming\edjdjdn.exeMD5
37bb301570706e9b086c26c16e7cdb83
SHA19ff8d1dcca0c34f62113cd7f0a5028923299cd27
SHA2564e599dda2d5d0f3cad7ac5451a39cb1c4934ea0f10fd9163e82711455aaf3efd
SHA512215f8b9165a273d12cc2bbf2f74172ffad4d2fef3b56b48dedac18b5785b12c44a358b0b701ce2099472d9a8fe20ca35686801731209db2276dac5d39aa864c8
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C:\Users\Admin\AppData\Roaming\edjdjdn.exeMD5
37bb301570706e9b086c26c16e7cdb83
SHA19ff8d1dcca0c34f62113cd7f0a5028923299cd27
SHA2564e599dda2d5d0f3cad7ac5451a39cb1c4934ea0f10fd9163e82711455aaf3efd
SHA512215f8b9165a273d12cc2bbf2f74172ffad4d2fef3b56b48dedac18b5785b12c44a358b0b701ce2099472d9a8fe20ca35686801731209db2276dac5d39aa864c8
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memory/976-10-0x0000000000000000-mapping.dmp
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memory/1056-8-0x0000000002410000-0x0000000002411000-memory.dmpFilesize
4KB
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memory/1056-9-0x00000000073A0000-0x00000000073A1000-memory.dmpFilesize
4KB
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memory/1056-2-0x0000000073940000-0x000000007402E000-memory.dmpFilesize
6.9MB
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memory/1056-3-0x0000000000080000-0x0000000000081000-memory.dmpFilesize
4KB
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memory/1056-12-0x00000000049D1000-0x00000000049D2000-memory.dmpFilesize
4KB
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memory/1056-5-0x0000000004A20000-0x0000000004A21000-memory.dmpFilesize
4KB
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memory/1056-7-0x00000000049D0000-0x00000000049D1000-memory.dmpFilesize
4KB
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memory/1056-6-0x00000000023F0000-0x000000000240E000-memory.dmpFilesize
120KB
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memory/1092-26-0x0000000004F11000-0x0000000004F12000-memory.dmpFilesize
4KB
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memory/1092-13-0x0000000000000000-mapping.dmp
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memory/1092-24-0x0000000004DA0000-0x0000000004DAB000-memory.dmpFilesize
44KB
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memory/1092-25-0x0000000004DB0000-0x0000000004DB1000-memory.dmpFilesize
4KB
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memory/1092-16-0x0000000073940000-0x000000007402E000-memory.dmpFilesize
6.9MB
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memory/1092-23-0x0000000004F10000-0x0000000004F11000-memory.dmpFilesize
4KB
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memory/2420-11-0x0000000000000000-mapping.dmp
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memory/3900-28-0x000000000041E792-mapping.dmp
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memory/3900-27-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/3900-31-0x0000000073940000-0x000000007402E000-memory.dmpFilesize
6.9MB
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memory/3900-34-0x0000000005C50000-0x0000000005C51000-memory.dmpFilesize
4KB
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memory/3900-37-0x0000000005780000-0x0000000005781000-memory.dmpFilesize
4KB
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memory/3900-38-0x00000000057A0000-0x00000000057A1000-memory.dmpFilesize
4KB
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memory/3900-39-0x0000000005A20000-0x0000000005A25000-memory.dmpFilesize
20KB
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memory/3900-40-0x0000000006310000-0x0000000006329000-memory.dmpFilesize
100KB
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memory/3900-41-0x0000000005C40000-0x0000000005C43000-memory.dmpFilesize
12KB