Analysis
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max time kernel
138s -
max time network
186s -
platform
windows7_x64 -
resource
win7v20210410 -
submitted
24-07-2021 19:02
Static task
static1
Behavioral task
behavioral1
Sample
051988E2E2A1EF5E3A27C935E6B694268EEA61D3DC790.exe
Resource
win7v20210410
General
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Target
051988E2E2A1EF5E3A27C935E6B694268EEA61D3DC790.exe
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Size
986KB
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MD5
1de9a9696cb0de0c4b5d80a069f011c8
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SHA1
ebcbec44ec2755337a49a84935a3917867d6e4f4
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SHA256
051988e2e2a1ef5e3a27c935e6b694268eea61d3dc790b7e99d86560d772df8f
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SHA512
8f8f848c9775472f51e70eb49020235d109a51f1be9f6f6b25389f7586fe4056b23f153317e50cafcbcd0ae40d7b95c395be28734090b32bbaa098afccfd52fd
Malware Config
Extracted
asyncrat
0.5.7B
marianavilla3008o.duckdns.org:1020
AsyncMutex_6SI8OkPnk
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aes_key
0BWUkyqcUqHqVx84fueTgswHmIDOrV5h
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anti_detection
false
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autorun
false
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bdos
false
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delay
Default
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host
marianavilla3008o.duckdns.org,
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hwid
3
- install_file
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install_folder
%AppData%
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mutex
AsyncMutex_6SI8OkPnk
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pastebin_config
null
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port
1020
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version
0.5.7B
Signatures
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suricata: ET MALWARE Observed Malicious SSL Cert (AsyncRAT Server)
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Async RAT payload 3 IoCs
Processes:
resource yara_rule behavioral1/memory/960-68-0x0000000000400000-0x0000000000412000-memory.dmp asyncrat behavioral1/memory/960-69-0x000000000040C73E-mapping.dmp asyncrat behavioral1/memory/960-70-0x0000000000400000-0x0000000000412000-memory.dmp asyncrat -
CustAttr .NET packer 1 IoCs
Detects CustAttr .NET packer in memory.
Processes:
resource yara_rule behavioral1/memory/2016-62-0x0000000000660000-0x0000000000665000-memory.dmp CustAttr -
Looks for VirtualBox Guest Additions in registry 2 TTPs
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Looks for VMWare Tools registry key 2 TTPs
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Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
Processes:
051988E2E2A1EF5E3A27C935E6B694268EEA61D3DC790.exedescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion 051988E2E2A1EF5E3A27C935E6B694268EEA61D3DC790.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion 051988E2E2A1EF5E3A27C935E6B694268EEA61D3DC790.exe -
Maps connected drives based on registry 3 TTPs 2 IoCs
Disk information is often read in order to detect sandboxing environments.
Processes:
051988E2E2A1EF5E3A27C935E6B694268EEA61D3DC790.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum 051988E2E2A1EF5E3A27C935E6B694268EEA61D3DC790.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0 051988E2E2A1EF5E3A27C935E6B694268EEA61D3DC790.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
051988E2E2A1EF5E3A27C935E6B694268EEA61D3DC790.exedescription pid process target process PID 2016 set thread context of 960 2016 051988E2E2A1EF5E3A27C935E6B694268EEA61D3DC790.exe 051988E2E2A1EF5E3A27C935E6B694268EEA61D3DC790.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
051988E2E2A1EF5E3A27C935E6B694268EEA61D3DC790.exedescription pid process Token: SeDebugPrivilege 960 051988E2E2A1EF5E3A27C935E6B694268EEA61D3DC790.exe -
Suspicious use of WriteProcessMemory 13 IoCs
Processes:
051988E2E2A1EF5E3A27C935E6B694268EEA61D3DC790.exedescription pid process target process PID 2016 wrote to memory of 1860 2016 051988E2E2A1EF5E3A27C935E6B694268EEA61D3DC790.exe schtasks.exe PID 2016 wrote to memory of 1860 2016 051988E2E2A1EF5E3A27C935E6B694268EEA61D3DC790.exe schtasks.exe PID 2016 wrote to memory of 1860 2016 051988E2E2A1EF5E3A27C935E6B694268EEA61D3DC790.exe schtasks.exe PID 2016 wrote to memory of 1860 2016 051988E2E2A1EF5E3A27C935E6B694268EEA61D3DC790.exe schtasks.exe PID 2016 wrote to memory of 960 2016 051988E2E2A1EF5E3A27C935E6B694268EEA61D3DC790.exe 051988E2E2A1EF5E3A27C935E6B694268EEA61D3DC790.exe PID 2016 wrote to memory of 960 2016 051988E2E2A1EF5E3A27C935E6B694268EEA61D3DC790.exe 051988E2E2A1EF5E3A27C935E6B694268EEA61D3DC790.exe PID 2016 wrote to memory of 960 2016 051988E2E2A1EF5E3A27C935E6B694268EEA61D3DC790.exe 051988E2E2A1EF5E3A27C935E6B694268EEA61D3DC790.exe PID 2016 wrote to memory of 960 2016 051988E2E2A1EF5E3A27C935E6B694268EEA61D3DC790.exe 051988E2E2A1EF5E3A27C935E6B694268EEA61D3DC790.exe PID 2016 wrote to memory of 960 2016 051988E2E2A1EF5E3A27C935E6B694268EEA61D3DC790.exe 051988E2E2A1EF5E3A27C935E6B694268EEA61D3DC790.exe PID 2016 wrote to memory of 960 2016 051988E2E2A1EF5E3A27C935E6B694268EEA61D3DC790.exe 051988E2E2A1EF5E3A27C935E6B694268EEA61D3DC790.exe PID 2016 wrote to memory of 960 2016 051988E2E2A1EF5E3A27C935E6B694268EEA61D3DC790.exe 051988E2E2A1EF5E3A27C935E6B694268EEA61D3DC790.exe PID 2016 wrote to memory of 960 2016 051988E2E2A1EF5E3A27C935E6B694268EEA61D3DC790.exe 051988E2E2A1EF5E3A27C935E6B694268EEA61D3DC790.exe PID 2016 wrote to memory of 960 2016 051988E2E2A1EF5E3A27C935E6B694268EEA61D3DC790.exe 051988E2E2A1EF5E3A27C935E6B694268EEA61D3DC790.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\051988E2E2A1EF5E3A27C935E6B694268EEA61D3DC790.exe"C:\Users\Admin\AppData\Local\Temp\051988E2E2A1EF5E3A27C935E6B694268EEA61D3DC790.exe"1⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\kLTggmZvhe" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC716.tmp"2⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\051988E2E2A1EF5E3A27C935E6B694268EEA61D3DC790.exe"C:\Users\Admin\AppData\Local\Temp\051988E2E2A1EF5E3A27C935E6B694268EEA61D3DC790.exe"2⤵
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\tmpC716.tmpMD5
3071d48833d6ae9e5b6dccd81f3486be
SHA19268e7ef921c1831aead6cbd29dd4e87b2240ceb
SHA256e4ef996ee12088cf4eb658445d21e05704f870fc87eeec56935192d44b0bc44c
SHA512b7479f67b5e88fbbede5dd324298a4c7c333c0f17f3bfa7e4467f2cf318ffc2eab9339b74562c9a76e1a0ce71b93e4b4661a6d9e5a76786569cc98a2522770dd
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memory/960-73-0x0000000000770000-0x0000000000771000-memory.dmpFilesize
4KB
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memory/960-72-0x0000000076A81000-0x0000000076A83000-memory.dmpFilesize
8KB
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memory/960-70-0x0000000000400000-0x0000000000412000-memory.dmpFilesize
72KB
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memory/960-69-0x000000000040C73E-mapping.dmp
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memory/960-68-0x0000000000400000-0x0000000000412000-memory.dmpFilesize
72KB
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memory/1860-66-0x0000000000000000-mapping.dmp
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memory/2016-59-0x0000000000F50000-0x0000000000F51000-memory.dmpFilesize
4KB
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memory/2016-65-0x0000000000BE0000-0x0000000000C32000-memory.dmpFilesize
328KB
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memory/2016-64-0x0000000005150000-0x00000000051E8000-memory.dmpFilesize
608KB
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memory/2016-63-0x000000007EF40000-0x000000007EF41000-memory.dmpFilesize
4KB
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memory/2016-62-0x0000000000660000-0x0000000000665000-memory.dmpFilesize
20KB
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memory/2016-61-0x0000000004A00000-0x0000000004A01000-memory.dmpFilesize
4KB