Analysis
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max time kernel
145s -
max time network
149s -
platform
windows7_x64 -
resource
win7-20220414-en -
submitted
21-05-2022 18:41
Static task
static1
Behavioral task
behavioral1
Sample
RFQ.exe
Resource
win7-20220414-en
General
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Target
RFQ.exe
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Size
1.4MB
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MD5
96169d2d11ba98a5afc25cac39bfa543
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SHA1
d39219033b59417b6ff897259f74ef3f511cb835
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SHA256
e3e3a0d4264a9b475696aba1bc5963c510560335c0399909c524fcaa5fcee4b5
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SHA512
40870c3b00d55f0110f1940a611fac0ac26a1ff07da66e2dcd2c56abe16c24d87e59fa289c1e26a674b5ce16e4b19a67e92cf69820352deef32ca7f7744c654d
Malware Config
Extracted
nanocore
1.2.2.0
185.244.29.132:1985
127.0.0.1:1985
f61bbd75-d4b8-4ea7-be06-9084282264d7
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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
2020-02-21T01:06:21.461976936Z
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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
1985
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default_group
Scarface
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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
f61bbd75-d4b8-4ea7-be06-9084282264d7
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mutex_timeout
5000
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prevent_system_sleep
false
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primary_connection_host
185.244.29.132
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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
false
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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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Drops startup file 1 IoCs
Processes:
RFQ.exedescription ioc process File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\bootcfg.url RFQ.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
MSBuild.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\DSL Service = "C:\\Program Files (x86)\\DSL Service\\dslsvc.exe" MSBuild.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
RFQ.exedescription pid process target process PID 1600 set thread context of 624 1600 RFQ.exe MSBuild.exe -
Drops file in Program Files directory 2 IoCs
Processes:
MSBuild.exedescription ioc process File opened for modification C:\Program Files (x86)\DSL Service\dslsvc.exe MSBuild.exe File created C:\Program Files (x86)\DSL Service\dslsvc.exe MSBuild.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 15 IoCs
Processes:
MSBuild.exeRFQ.exepid process 624 MSBuild.exe 624 MSBuild.exe 1600 RFQ.exe 1600 RFQ.exe 1600 RFQ.exe 1600 RFQ.exe 1600 RFQ.exe 1600 RFQ.exe 1600 RFQ.exe 1600 RFQ.exe 1600 RFQ.exe 1600 RFQ.exe 1600 RFQ.exe 1600 RFQ.exe 1600 RFQ.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
MSBuild.exepid process 624 MSBuild.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
MSBuild.exedescription pid process Token: SeDebugPrivilege 624 MSBuild.exe Token: SeDebugPrivilege 624 MSBuild.exe -
Suspicious use of FindShellTrayWindow 3 IoCs
Processes:
RFQ.exepid process 1600 RFQ.exe 1600 RFQ.exe 1600 RFQ.exe -
Suspicious use of SendNotifyMessage 3 IoCs
Processes:
RFQ.exepid process 1600 RFQ.exe 1600 RFQ.exe 1600 RFQ.exe -
Suspicious use of WriteProcessMemory 14 IoCs
Processes:
RFQ.exeMSBuild.exedescription pid process target process PID 1600 wrote to memory of 624 1600 RFQ.exe MSBuild.exe PID 1600 wrote to memory of 624 1600 RFQ.exe MSBuild.exe PID 1600 wrote to memory of 624 1600 RFQ.exe MSBuild.exe PID 1600 wrote to memory of 624 1600 RFQ.exe MSBuild.exe PID 1600 wrote to memory of 624 1600 RFQ.exe MSBuild.exe PID 1600 wrote to memory of 624 1600 RFQ.exe MSBuild.exe PID 624 wrote to memory of 2044 624 MSBuild.exe schtasks.exe PID 624 wrote to memory of 2044 624 MSBuild.exe schtasks.exe PID 624 wrote to memory of 2044 624 MSBuild.exe schtasks.exe PID 624 wrote to memory of 2044 624 MSBuild.exe schtasks.exe PID 624 wrote to memory of 604 624 MSBuild.exe schtasks.exe PID 624 wrote to memory of 604 624 MSBuild.exe schtasks.exe PID 624 wrote to memory of 604 624 MSBuild.exe schtasks.exe PID 624 wrote to memory of 604 624 MSBuild.exe schtasks.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\RFQ.exe"C:\Users\Admin\AppData\Local\Temp\RFQ.exe"1⤵
- Drops startup file
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
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C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe"C:\\\\Windows\\\\Microsoft.NET\\\\Framework\\\\v2.0.50727\\\\MSBuild.exe"2⤵
- Adds Run key to start application
- 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 "DSL Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmp1D03.tmp"3⤵
- Creates scheduled task(s)
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C:\Windows\SysWOW64\schtasks.exe"schtasks.exe" /create /f /tn "DSL Service Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp20CC.tmp"3⤵
- Creates scheduled task(s)
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\tmp1D03.tmpFilesize
1KB
MD5ae766004c0d8792953bafffe8f6a2e3b
SHA114b12f27543a401e2fe0af8052e116cab0032426
SHA2561abdd9b6a6b84e4ba1af1282dc84ce276c59ba253f4c4af05fea498a4fd99540
SHA512e530da4a5d4336fc37838d0e93b5eb3804b9c489c71f6954a47fc81a4c655bb72ec493e109cf96e6e3617d7623ac80697ad3bbd5ffc6281bafc8b34dca5e6567
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C:\Users\Admin\AppData\Local\Temp\tmp20CC.tmpFilesize
1KB
MD5f34c9976546ad9fc8624117687e1b732
SHA1df5de84989e77f019a10e10f2e8a44bca2dc620d
SHA256d524ed3f3648a50ab92cf755461af48ed0c973a3edfba3a4cd0fad3d2e833183
SHA512cd90ca19818bcdf0ec6ee9bafd47749e87ffb8f5c4711ef6c73483acf73399b2ab8c7b55f98303fcce409591647741ceb2ddd7b399ad62b2f5b18ed5378c8260
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memory/604-70-0x0000000000000000-mapping.dmp
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memory/624-65-0x0000000000080000-0x00000000000B8000-memory.dmpFilesize
224KB
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memory/624-63-0x000000000009E792-mapping.dmp
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memory/624-64-0x0000000000080000-0x00000000000B8000-memory.dmpFilesize
224KB
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memory/624-58-0x0000000000080000-0x00000000000B8000-memory.dmpFilesize
224KB
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memory/624-71-0x0000000074630000-0x0000000074BDB000-memory.dmpFilesize
5.7MB
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memory/624-56-0x0000000000080000-0x00000000000B8000-memory.dmpFilesize
224KB
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memory/1600-54-0x0000000075CD1000-0x0000000075CD3000-memory.dmpFilesize
8KB
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memory/1600-69-0x0000000000D70000-0x0000000000DD6000-memory.dmpFilesize
408KB
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memory/1600-55-0x0000000002810000-0x0000000002876000-memory.dmpFilesize
408KB
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memory/2044-67-0x0000000000000000-mapping.dmp