Analysis
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max time kernel
144s -
max time network
149s -
platform
windows7_x64 -
resource
win7-20220414-en -
submitted
04-07-2022 16:56
Static task
static1
Behavioral task
behavioral1
Sample
tmp.exe
Resource
win7-20220414-en
General
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Target
tmp.exe
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Size
507KB
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MD5
d7e3c43afd6736d96b99719ddd98aa44
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SHA1
568b671264b38c3a04adbe345694d24a98048d91
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SHA256
13f409b60b9a72911c24840af2823a357783ac42298b323c098263d99e03efaa
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SHA512
6bfad217c196fe17756b1bab27ced20a37b299d34e5c9a84c4f4cde7af7bebbd89dd0b5ca86fe1f820b46cf8a7d9b9c02453e30f2fdf78ebc51a68d8747ff658
Malware Config
Extracted
nanocore
1.2.2.0
chochoinc07.bounceme.net:7650
127.0.0.1:7650
751dbebb-3fd4-4ed7-9938-6ad470902777
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activate_away_mode
true
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backup_connection_host
127.0.0.1
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backup_dns_server
8.8.4.4
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buffer_size
65535
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build_time
2022-04-03T02:43:06.495130836Z
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bypass_user_account_control
false
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bypass_user_account_control_data
PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0iVVRGLTE2Ij8+DQo8VGFzayB2ZXJzaW9uPSIxLjIiIHhtbG5zPSJodHRwOi8vc2NoZW1hcy5taWNyb3NvZnQuY29tL3dpbmRvd3MvMjAwNC8wMi9taXQvdGFzayI+DQogIDxSZWdpc3RyYXRpb25JbmZvIC8+DQogIDxUcmlnZ2VycyAvPg0KICA8UHJpbmNpcGFscz4NCiAgICA8UHJpbmNpcGFsIGlkPSJBdXRob3IiPg0KICAgICAgPExvZ29uVHlwZT5JbnRlcmFjdGl2ZVRva2VuPC9Mb2dvblR5cGU+DQogICAgICA8UnVuTGV2ZWw+SGlnaGVzdEF2YWlsYWJsZTwvUnVuTGV2ZWw+DQogICAgPC9QcmluY2lwYWw+DQogIDwvUHJpbmNpcGFscz4NCiAgPFNldHRpbmdzPg0KICAgIDxNdWx0aXBsZUluc3RhbmNlc1BvbGljeT5QYXJhbGxlbDwvTXVsdGlwbGVJbnN0YW5jZXNQb2xpY3k+DQogICAgPERpc2FsbG93U3RhcnRJZk9uQmF0dGVyaWVzPmZhbHNlPC9EaXNhbGxvd1N0YXJ0SWZPbkJhdHRlcmllcz4NCiAgICA8U3RvcElmR29pbmdPbkJhdHRlcmllcz5mYWxzZTwvU3RvcElmR29pbmdPbkJhdHRlcmllcz4NCiAgICA8QWxsb3dIYXJkVGVybWluYXRlPnRydWU8L0FsbG93SGFyZFRlcm1pbmF0ZT4NCiAgICA8U3RhcnRXaGVuQXZhaWxhYmxlPmZhbHNlPC9TdGFydFdoZW5BdmFpbGFibGU+DQogICAgPFJ1bk9ubHlJZk5ldHdvcmtBdmFpbGFibGU+ZmFsc2U8L1J1bk9ubHlJZk5ldHdvcmtBdmFpbGFibGU+DQogICAgPElkbGVTZXR0aW5ncz4NCiAgICAgIDxTdG9wT25JZGxlRW5kPmZhbHNlPC9TdG9wT25JZGxlRW5kPg0KICAgICAgPFJlc3RhcnRPbklkbGU+ZmFsc2U8L1Jlc3RhcnRPbklkbGU+DQogICAgPC9JZGxlU2V0dGluZ3M+DQogICAgPEFsbG93U3RhcnRPbkRlbWFuZD50cnVlPC9BbGxvd1N0YXJ0T25EZW1hbmQ+DQogICAgPEVuYWJsZWQ+dHJ1ZTwvRW5hYmxlZD4NCiAgICA8SGlkZGVuPmZhbHNlPC9IaWRkZW4+DQogICAgPFJ1bk9ubHlJZklkbGU+ZmFsc2U8L1J1bk9ubHlJZklkbGU+DQogICAgPFdha2VUb1J1bj5mYWxzZTwvV2FrZVRvUnVuPg0KICAgIDxFeGVjdXRpb25UaW1lTGltaXQ+UFQwUzwvRXhlY3V0aW9uVGltZUxpbWl0Pg0KICAgIDxQcmlvcml0eT40PC9Qcmlvcml0eT4NCiAgPC9TZXR0aW5ncz4NCiAgPEFjdGlvbnMgQ29udGV4dD0iQXV0aG9yIj4NCiAgICA8RXhlYz4NCiAgICAgIDxDb21tYW5kPiIjRVhFQ1VUQUJMRVBBVEgiPC9Db21tYW5kPg0KICAgICAgPEFyZ3VtZW50cz4kKEFyZzApPC9Bcmd1bWVudHM+DQogICAgPC9FeGVjPg0KICA8L0FjdGlvbnM+DQo8L1Rhc2s+
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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
7650
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default_group
GasGas
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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
751dbebb-3fd4-4ed7-9938-6ad470902777
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mutex_timeout
5000
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prevent_system_sleep
false
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primary_connection_host
chochoinc07.bounceme.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
false
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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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Adds Run key to start application 2 TTPs 1 IoCs
Processes:
tmp.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\WPA Subsystem = "C:\\Program Files (x86)\\WPA Subsystem\\wpass.exe" tmp.exe -
Processes:
tmp.exedescription ioc process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA tmp.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
tmp.exedescription pid process target process PID 916 set thread context of 2004 916 tmp.exe tmp.exe -
Drops file in Program Files directory 2 IoCs
Processes:
tmp.exedescription ioc process File created C:\Program Files (x86)\WPA Subsystem\wpass.exe tmp.exe File opened for modification C:\Program Files (x86)\WPA Subsystem\wpass.exe tmp.exe -
Creates scheduled task(s) 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Suspicious behavior: EnumeratesProcesses 3 IoCs
Processes:
tmp.exetmp.exepid process 916 tmp.exe 2004 tmp.exe 2004 tmp.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
tmp.exepid process 2004 tmp.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
tmp.exetmp.exedescription pid process Token: SeDebugPrivilege 916 tmp.exe Token: SeDebugPrivilege 2004 tmp.exe -
Suspicious use of WriteProcessMemory 21 IoCs
Processes:
tmp.exetmp.exedescription pid process target process PID 916 wrote to memory of 1996 916 tmp.exe tmp.exe PID 916 wrote to memory of 1996 916 tmp.exe tmp.exe PID 916 wrote to memory of 1996 916 tmp.exe tmp.exe PID 916 wrote to memory of 1996 916 tmp.exe tmp.exe PID 916 wrote to memory of 2004 916 tmp.exe tmp.exe PID 916 wrote to memory of 2004 916 tmp.exe tmp.exe PID 916 wrote to memory of 2004 916 tmp.exe tmp.exe PID 916 wrote to memory of 2004 916 tmp.exe tmp.exe PID 916 wrote to memory of 2004 916 tmp.exe tmp.exe PID 916 wrote to memory of 2004 916 tmp.exe tmp.exe PID 916 wrote to memory of 2004 916 tmp.exe tmp.exe PID 916 wrote to memory of 2004 916 tmp.exe tmp.exe PID 916 wrote to memory of 2004 916 tmp.exe tmp.exe PID 2004 wrote to memory of 584 2004 tmp.exe schtasks.exe PID 2004 wrote to memory of 584 2004 tmp.exe schtasks.exe PID 2004 wrote to memory of 584 2004 tmp.exe schtasks.exe PID 2004 wrote to memory of 584 2004 tmp.exe schtasks.exe PID 2004 wrote to memory of 660 2004 tmp.exe schtasks.exe PID 2004 wrote to memory of 660 2004 tmp.exe schtasks.exe PID 2004 wrote to memory of 660 2004 tmp.exe schtasks.exe PID 2004 wrote to memory of 660 2004 tmp.exe schtasks.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\tmp.exe"C:\Users\Admin\AppData\Local\Temp\tmp.exe"1⤵
- 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\tmp.exe"C:\Users\Admin\AppData\Local\Temp\tmp.exe"2⤵
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C:\Users\Admin\AppData\Local\Temp\tmp.exe"C:\Users\Admin\AppData\Local\Temp\tmp.exe"2⤵
- 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
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C:\Windows\SysWOW64\schtasks.exe"schtasks.exe" /create /f /tn "WPA Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmpBF2B.tmp"3⤵
- Creates scheduled task(s)
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C:\Windows\SysWOW64\schtasks.exe"schtasks.exe" /create /f /tn "WPA Subsystem Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpC100.tmp"3⤵
- Creates scheduled task(s)
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\tmpBF2B.tmpFilesize
1KB
MD53f4dcafa44c36f23e4db2b2315fd09da
SHA18c83089d6f6c887a77af9b42ca09969f3b2f83f6
SHA256b8475eb97200b8a15eaf07e0a2cddc5c95e5bc3e7a98685364c9796480de57dc
SHA512e0624dd6cf0d5e014e96a323d2f7ebe13b683af71bd6ddafa3005cdc2f3c764cfca509262d442fc844b4b390d241ccf3eb36d30043d3d6f6e955a2ee9f792678
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C:\Users\Admin\AppData\Local\Temp\tmpC100.tmpFilesize
1KB
MD54365cd1ae65923a319ef2683a45891fe
SHA185dde233112660e31c53884aedfbad52e4547e09
SHA25684b6ce4ba26fa6fb57fa70b9ad191f7c42c71e259897955b5d514385bcd91b58
SHA512d1bd24f504c5c2ecaa3ae98268ccc2e400ea3e16980c6caf394eadf7738225e4d5578fbe62bbe2de3fe0cb56a0d76bb3fc84cef3b9cd2f3d8be6d0becefdc035
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memory/584-76-0x0000000000000000-mapping.dmp
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memory/660-78-0x0000000000000000-mapping.dmp
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memory/916-60-0x0000000004F40000-0x0000000004FB2000-memory.dmpFilesize
456KB
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memory/916-74-0x00000000006B5000-0x00000000006C6000-memory.dmpFilesize
68KB
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memory/916-54-0x0000000000130000-0x00000000001B4000-memory.dmpFilesize
528KB
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memory/916-61-0x00000000006F0000-0x000000000072A000-memory.dmpFilesize
232KB
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memory/916-55-0x00000000753B1000-0x00000000753B3000-memory.dmpFilesize
8KB
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memory/916-59-0x0000000000580000-0x000000000058A000-memory.dmpFilesize
40KB
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memory/916-56-0x0000000000500000-0x0000000000516000-memory.dmpFilesize
88KB
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memory/916-57-0x00000000006B5000-0x00000000006C6000-memory.dmpFilesize
68KB
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memory/916-58-0x00000000006B5000-0x00000000006C6000-memory.dmpFilesize
68KB
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memory/2004-63-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/2004-73-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/2004-71-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/2004-69-0x000000000041E792-mapping.dmp
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memory/2004-68-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/2004-66-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/2004-65-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/2004-62-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/2004-80-0x00000000003E0000-0x00000000003EA000-memory.dmpFilesize
40KB
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memory/2004-81-0x0000000000490000-0x00000000004AE000-memory.dmpFilesize
120KB
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memory/2004-82-0x00000000003F0000-0x00000000003FA000-memory.dmpFilesize
40KB