Analysis
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max time kernel
135s -
max time network
143s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
16-09-2024 15:30
Static task
static1
Behavioral task
behavioral1
Sample
REVISE_RECBTAAH-PI.exe
Resource
win7-20240903-en
General
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Target
REVISE_RECBTAAH-PI.exe
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Size
676KB
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MD5
d0c54245dc16324c9170c419f2500737
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SHA1
642c7dd025dc31d39b26af7a7be53ba617e78bd4
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SHA256
6c22578a9080fc7f38d949df46f1bb88f386fd17ad76d78cac31e5b7782a2685
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SHA512
1e95e9efc025c53192de36154f51198181ec445145fdfe7f3b1afc83956cc49a04cbd9c6d318dde926da27057cf149565f5de5cb4208cfa78e01eef3f1f582e4
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SSDEEP
12288:49TK3cUmdavrlTGt5jw0LECUfE1F1Yl7tpkA1A9:0K3cFd6JNbDc13SHkG
Malware Config
Extracted
nanocore
1.2.2.0
45.66.231.103:7754
7754.hopto.org:7754
cee2b15d-82f8-4d85-8dc9-22fd50400675
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activate_away_mode
true
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backup_connection_host
7754.hopto.org
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backup_dns_server
8.8.4.4
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buffer_size
65535
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build_time
2024-06-21T07:47:09.033387236Z
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bypass_user_account_control
false
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bypass_user_account_control_data
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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
7754
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default_group
7754Nano
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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
cee2b15d-82f8-4d85-8dc9-22fd50400675
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mutex_timeout
5000
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prevent_system_sleep
false
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primary_connection_host
45.66.231.103
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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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Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
pid Process 4364 powershell.exe 3304 powershell.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-523280732-2327480845-3730041215-1000\Control Panel\International\Geo\Nation REVISE_RECBTAAH-PI.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\DSL Service = "C:\\Program Files (x86)\\DSL Service\\dslsv.exe" REVISE_RECBTAAH-PI.exe -
description ioc Process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA REVISE_RECBTAAH-PI.exe -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 2668 set thread context of 2944 2668 REVISE_RECBTAAH-PI.exe 97 -
Drops file in Program Files directory 2 IoCs
description ioc Process File created C:\Program Files (x86)\DSL Service\dslsv.exe REVISE_RECBTAAH-PI.exe File opened for modification C:\Program Files (x86)\DSL Service\dslsv.exe REVISE_RECBTAAH-PI.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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System Location Discovery: System Language Discovery 1 TTPs 7 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language schtasks.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language schtasks.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language REVISE_RECBTAAH-PI.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language powershell.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language powershell.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language schtasks.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language REVISE_RECBTAAH-PI.exe -
Scheduled Task/Job: Scheduled Task 1 TTPs 3 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 5072 schtasks.exe 5100 schtasks.exe 4716 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 14 IoCs
pid Process 2668 REVISE_RECBTAAH-PI.exe 2668 REVISE_RECBTAAH-PI.exe 3304 powershell.exe 4364 powershell.exe 2668 REVISE_RECBTAAH-PI.exe 2668 REVISE_RECBTAAH-PI.exe 2668 REVISE_RECBTAAH-PI.exe 2668 REVISE_RECBTAAH-PI.exe 2668 REVISE_RECBTAAH-PI.exe 4364 powershell.exe 3304 powershell.exe 2944 REVISE_RECBTAAH-PI.exe 2944 REVISE_RECBTAAH-PI.exe 2944 REVISE_RECBTAAH-PI.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 2944 REVISE_RECBTAAH-PI.exe -
Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 2668 REVISE_RECBTAAH-PI.exe Token: SeDebugPrivilege 3304 powershell.exe Token: SeDebugPrivilege 4364 powershell.exe Token: SeDebugPrivilege 2944 REVISE_RECBTAAH-PI.exe -
Suspicious use of WriteProcessMemory 29 IoCs
description pid Process procid_target PID 2668 wrote to memory of 3304 2668 REVISE_RECBTAAH-PI.exe 89 PID 2668 wrote to memory of 3304 2668 REVISE_RECBTAAH-PI.exe 89 PID 2668 wrote to memory of 3304 2668 REVISE_RECBTAAH-PI.exe 89 PID 2668 wrote to memory of 4364 2668 REVISE_RECBTAAH-PI.exe 91 PID 2668 wrote to memory of 4364 2668 REVISE_RECBTAAH-PI.exe 91 PID 2668 wrote to memory of 4364 2668 REVISE_RECBTAAH-PI.exe 91 PID 2668 wrote to memory of 5072 2668 REVISE_RECBTAAH-PI.exe 93 PID 2668 wrote to memory of 5072 2668 REVISE_RECBTAAH-PI.exe 93 PID 2668 wrote to memory of 5072 2668 REVISE_RECBTAAH-PI.exe 93 PID 2668 wrote to memory of 4260 2668 REVISE_RECBTAAH-PI.exe 95 PID 2668 wrote to memory of 4260 2668 REVISE_RECBTAAH-PI.exe 95 PID 2668 wrote to memory of 4260 2668 REVISE_RECBTAAH-PI.exe 95 PID 2668 wrote to memory of 3456 2668 REVISE_RECBTAAH-PI.exe 96 PID 2668 wrote to memory of 3456 2668 REVISE_RECBTAAH-PI.exe 96 PID 2668 wrote to memory of 3456 2668 REVISE_RECBTAAH-PI.exe 96 PID 2668 wrote to memory of 2944 2668 REVISE_RECBTAAH-PI.exe 97 PID 2668 wrote to memory of 2944 2668 REVISE_RECBTAAH-PI.exe 97 PID 2668 wrote to memory of 2944 2668 REVISE_RECBTAAH-PI.exe 97 PID 2668 wrote to memory of 2944 2668 REVISE_RECBTAAH-PI.exe 97 PID 2668 wrote to memory of 2944 2668 REVISE_RECBTAAH-PI.exe 97 PID 2668 wrote to memory of 2944 2668 REVISE_RECBTAAH-PI.exe 97 PID 2668 wrote to memory of 2944 2668 REVISE_RECBTAAH-PI.exe 97 PID 2668 wrote to memory of 2944 2668 REVISE_RECBTAAH-PI.exe 97 PID 2944 wrote to memory of 5100 2944 REVISE_RECBTAAH-PI.exe 98 PID 2944 wrote to memory of 5100 2944 REVISE_RECBTAAH-PI.exe 98 PID 2944 wrote to memory of 5100 2944 REVISE_RECBTAAH-PI.exe 98 PID 2944 wrote to memory of 4716 2944 REVISE_RECBTAAH-PI.exe 100 PID 2944 wrote to memory of 4716 2944 REVISE_RECBTAAH-PI.exe 100 PID 2944 wrote to memory of 4716 2944 REVISE_RECBTAAH-PI.exe 100
Processes
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C:\Users\Admin\AppData\Local\Temp\REVISE_RECBTAAH-PI.exe"C:\Users\Admin\AppData\Local\Temp\REVISE_RECBTAAH-PI.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2668 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\REVISE_RECBTAAH-PI.exe"2⤵
- Command and Scripting Interpreter: PowerShell
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3304
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\oFNArmC.exe"2⤵
- Command and Scripting Interpreter: PowerShell
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4364
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\oFNArmC" /XML "C:\Users\Admin\AppData\Local\Temp\tmpAFD7.tmp"2⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
PID:5072
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C:\Users\Admin\AppData\Local\Temp\REVISE_RECBTAAH-PI.exe"C:\Users\Admin\AppData\Local\Temp\REVISE_RECBTAAH-PI.exe"2⤵PID:4260
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C:\Users\Admin\AppData\Local\Temp\REVISE_RECBTAAH-PI.exe"C:\Users\Admin\AppData\Local\Temp\REVISE_RECBTAAH-PI.exe"2⤵PID:3456
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C:\Users\Admin\AppData\Local\Temp\REVISE_RECBTAAH-PI.exe"C:\Users\Admin\AppData\Local\Temp\REVISE_RECBTAAH-PI.exe"2⤵
- Adds Run key to start application
- Checks whether UAC is enabled
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2944 -
C:\Windows\SysWOW64\schtasks.exe"schtasks.exe" /create /f /tn "DSL Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmpB48B.tmp"3⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
PID:5100
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C:\Windows\SysWOW64\schtasks.exe"schtasks.exe" /create /f /tn "DSL Service Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpB5B4.tmp"3⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
PID:4716
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Network
MITRE ATT&CK Enterprise v15
Execution
Command and Scripting Interpreter
1PowerShell
1Scheduled Task/Job
1Scheduled Task
1Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
2KB
MD53d086a433708053f9bf9523e1d87a4e8
SHA1b3ab5d4f282a4c8fe8c3005b8a557ed5a0e37f28
SHA2566f8fd1b8d9788ad54eaeee329232187e24b7b43393a01aeba2d6e9675231fb69
SHA512931ae42b4c68a4507ff2342332b08eb407050d47cf4176137ea022d0f6e513c689e998445a04c6d18d4877391705c586bfce0234632b898d41aaed0957996dfd
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Filesize
18KB
MD5ebdf35a8a6a848e80c9957832129d193
SHA15c5c3b80185bd43b4375d94ebc839d965e67c35e
SHA256b6dcf6a79af1dd6e1e5d418b6b7ef7fb66e2c4e0253bbc9ef2874ad7f665e64e
SHA5121a8e5cd982ec5f857ae5dea45cadb3fdd9296169510911a5bbcc16e4647521a0a4867b694d987e3fd55bb11a50dda77889d57faed8ac4ae6902e15f6ee80c5a3
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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Filesize
1KB
MD511c73b55c060aedf98532a1ef4e7e00e
SHA1b925c3b24af4f6d0cafd568f9b000ba1dad7cac8
SHA256b8864999f3c4444c74920ee6b814e2b955033a6b83df5fc8467748c8a8ceb903
SHA512a8411bb22fba08e9405795327204c71879c4b30ab000c10f9fe49d2ada78f17f6b0f813df5fa41c6a30e94072966bf3186e98f441ef2f94e7e5ce2ef418a2b64
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Filesize
1KB
MD56f7560bbdc552da8ecfe72886865afcf
SHA112a6ca08cd14fabeb51cf51b08f0ef0e0ba79591
SHA256eb97db02099f25f5dd11e261332a13cb1c3ae3d5b9a0568ffbae797d35cc60cb
SHA51204b41d85b00806697f3f8951eb99edfe559baa6bf81f77787b64b4e5cd2b3f5dce2b0120d58fb18dc9ee051486bac706618063781b51095ab7fcb008755ce679
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Filesize
1KB
MD5afb71a33ece3758f782f052bbe5da94f
SHA1e69b9070ff52f81fdf01a40f775d021e4b4e71e4
SHA256abd73bfca8458750ee751d4c6c106d54dcf0969592f476acc64ab0d7f2bb1978
SHA51222c45992ca358ca9d4605ac426b65903b11b27db1b9c608739245dc412aa256d0908566626b3cfdafb32fca0809bf46c8824ab98cea7b7662216c915e6ef013f