General
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Target
NTS_eTaxInvoice·pdf.exe.vir
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Size
281KB
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Sample
220902-esf8rsgaar
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MD5
2c92d32ad7b723606cfd1f779ca886ed
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SHA1
8bb2d51a5b76980ed44e7e277cfd55349dd5b124
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SHA256
a4674dd97ef3e6d0092819874bc6536a9f68df73025a55800f8b5c09f55e14a6
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SHA512
db938dc75699b4a1a4d5979813c0040504e2de68f93e46f408a18d8255cc9285cd5e581cc6dbb299919f4f0e7698780dc03244a0f9891bfb78354a6ec8f96d4e
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SSDEEP
6144:HlgvTRHyC0fYl68NHcl4BX636ueM3srmiq47eVj8goRP4Lbr8/:F2wfYlnclM636uR8rmiqqeVg94G
Malware Config
Extracted
nanocore
1.2.2.0
press042.linkpc.net:2535
b71d7e50-89b3-4427-bbf6-2f93141b120c
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activate_away_mode
true
- backup_connection_host
- backup_dns_server
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buffer_size
65535
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build_time
2022-06-09T19:19:58.628857436Z
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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
2535
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default_group
Default
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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
b71d7e50-89b3-4427-bbf6-2f93141b120c
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mutex_timeout
5000
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prevent_system_sleep
false
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primary_connection_host
press042.linkpc.net
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primary_dns_server
press042.linkpc.net
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request_elevation
true
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restart_delay
5000
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run_delay
15
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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
Targets
-
-
Target
NTS_eTaxInvoice·pdf.exe.vir
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Size
281KB
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MD5
2c92d32ad7b723606cfd1f779ca886ed
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SHA1
8bb2d51a5b76980ed44e7e277cfd55349dd5b124
-
SHA256
a4674dd97ef3e6d0092819874bc6536a9f68df73025a55800f8b5c09f55e14a6
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SHA512
db938dc75699b4a1a4d5979813c0040504e2de68f93e46f408a18d8255cc9285cd5e581cc6dbb299919f4f0e7698780dc03244a0f9891bfb78354a6ec8f96d4e
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SSDEEP
6144:HlgvTRHyC0fYl68NHcl4BX636ueM3srmiq47eVj8goRP4Lbr8/:F2wfYlnclM636uR8rmiqqeVg94G
Score10/10-
Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
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NanoCore
NanoCore is a remote access tool (RAT) with a variety of capabilities.
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Checks QEMU agent file
Checks presence of QEMU agent, possibly to detect virtualization.
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Loads dropped DLL
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Checks installed software on the system
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Legitimate hosting services abused for malware hosting/C2
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Suspicious use of NtCreateThreadExHideFromDebugger
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Suspicious use of NtSetInformationThreadHideFromDebugger
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Suspicious use of SetThreadContext
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