Analysis
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max time kernel
36s -
max time network
145s -
platform
windows10_x64 -
resource
win10v20210408 -
submitted
04-05-2021 00:02
Static task
static1
Behavioral task
behavioral1
Sample
4fd695d95e1d73d7bbacee02f59d8319.exe
Resource
win7v20210410
General
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Target
4fd695d95e1d73d7bbacee02f59d8319.exe
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Size
1.4MB
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MD5
4fd695d95e1d73d7bbacee02f59d8319
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SHA1
ab88c76972f3f89960cdf1f266af724a3fd43593
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SHA256
05abc8321d90061e285704ca7d3d59818c444f3df43fe4a37bcfd9937f7bfd6a
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SHA512
935f6bc5477bdaedcd88affb758f554788543af3048bf46f6278f89cf511911ccecf0b3efe11456a75b719181db534082b17b615603c9fe46c6940be20f9e6b4
Malware Config
Extracted
asyncrat
0.5.7B
45.15.143.199:6606
45.15.143.199:7707
45.15.143.199:8808
AsyncMutex_6SI8OkPnk
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aes_key
OoiQ3awN02CPVF1J0BXVxr90eBdh9zc6
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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
45.15.143.199
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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
6606,7707,8808
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version
0.5.7B
Signatures
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Async RAT payload 2 IoCs
Processes:
resource yara_rule behavioral2/memory/3856-122-0x0000000000400000-0x0000000000412000-memory.dmp asyncrat behavioral2/memory/3856-123-0x000000000040C70E-mapping.dmp asyncrat -
Suspicious use of NtSetInformationThreadHideFromDebugger 13 IoCs
Processes:
4fd695d95e1d73d7bbacee02f59d8319.exepid process 4024 4fd695d95e1d73d7bbacee02f59d8319.exe 4024 4fd695d95e1d73d7bbacee02f59d8319.exe 4024 4fd695d95e1d73d7bbacee02f59d8319.exe 4024 4fd695d95e1d73d7bbacee02f59d8319.exe 4024 4fd695d95e1d73d7bbacee02f59d8319.exe 4024 4fd695d95e1d73d7bbacee02f59d8319.exe 4024 4fd695d95e1d73d7bbacee02f59d8319.exe 4024 4fd695d95e1d73d7bbacee02f59d8319.exe 4024 4fd695d95e1d73d7bbacee02f59d8319.exe 4024 4fd695d95e1d73d7bbacee02f59d8319.exe 4024 4fd695d95e1d73d7bbacee02f59d8319.exe 4024 4fd695d95e1d73d7bbacee02f59d8319.exe 4024 4fd695d95e1d73d7bbacee02f59d8319.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
4fd695d95e1d73d7bbacee02f59d8319.exedescription pid process target process PID 4024 set thread context of 3856 4024 4fd695d95e1d73d7bbacee02f59d8319.exe 4fd695d95e1d73d7bbacee02f59d8319.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Program crash 1 IoCs
Processes:
WerFault.exepid pid_target process target process 2504 4024 WerFault.exe 4fd695d95e1d73d7bbacee02f59d8319.exe -
Delays execution with timeout.exe 1 IoCs
Processes:
timeout.exepid process 2096 timeout.exe -
Suspicious behavior: EnumeratesProcesses 17 IoCs
Processes:
4fd695d95e1d73d7bbacee02f59d8319.exeWerFault.exepid process 4024 4fd695d95e1d73d7bbacee02f59d8319.exe 4024 4fd695d95e1d73d7bbacee02f59d8319.exe 4024 4fd695d95e1d73d7bbacee02f59d8319.exe 2504 WerFault.exe 2504 WerFault.exe 2504 WerFault.exe 2504 WerFault.exe 2504 WerFault.exe 2504 WerFault.exe 2504 WerFault.exe 2504 WerFault.exe 2504 WerFault.exe 2504 WerFault.exe 2504 WerFault.exe 2504 WerFault.exe 2504 WerFault.exe 2504 WerFault.exe -
Suspicious use of AdjustPrivilegeToken 5 IoCs
Processes:
4fd695d95e1d73d7bbacee02f59d8319.exeWerFault.exe4fd695d95e1d73d7bbacee02f59d8319.exedescription pid process Token: SeDebugPrivilege 4024 4fd695d95e1d73d7bbacee02f59d8319.exe Token: SeRestorePrivilege 2504 WerFault.exe Token: SeBackupPrivilege 2504 WerFault.exe Token: SeDebugPrivilege 2504 WerFault.exe Token: SeDebugPrivilege 3856 4fd695d95e1d73d7bbacee02f59d8319.exe -
Suspicious use of WriteProcessMemory 14 IoCs
Processes:
4fd695d95e1d73d7bbacee02f59d8319.execmd.exedescription pid process target process PID 4024 wrote to memory of 1220 4024 4fd695d95e1d73d7bbacee02f59d8319.exe cmd.exe PID 4024 wrote to memory of 1220 4024 4fd695d95e1d73d7bbacee02f59d8319.exe cmd.exe PID 4024 wrote to memory of 1220 4024 4fd695d95e1d73d7bbacee02f59d8319.exe cmd.exe PID 1220 wrote to memory of 2096 1220 cmd.exe timeout.exe PID 1220 wrote to memory of 2096 1220 cmd.exe timeout.exe PID 1220 wrote to memory of 2096 1220 cmd.exe timeout.exe PID 4024 wrote to memory of 3856 4024 4fd695d95e1d73d7bbacee02f59d8319.exe 4fd695d95e1d73d7bbacee02f59d8319.exe PID 4024 wrote to memory of 3856 4024 4fd695d95e1d73d7bbacee02f59d8319.exe 4fd695d95e1d73d7bbacee02f59d8319.exe PID 4024 wrote to memory of 3856 4024 4fd695d95e1d73d7bbacee02f59d8319.exe 4fd695d95e1d73d7bbacee02f59d8319.exe PID 4024 wrote to memory of 3856 4024 4fd695d95e1d73d7bbacee02f59d8319.exe 4fd695d95e1d73d7bbacee02f59d8319.exe PID 4024 wrote to memory of 3856 4024 4fd695d95e1d73d7bbacee02f59d8319.exe 4fd695d95e1d73d7bbacee02f59d8319.exe PID 4024 wrote to memory of 3856 4024 4fd695d95e1d73d7bbacee02f59d8319.exe 4fd695d95e1d73d7bbacee02f59d8319.exe PID 4024 wrote to memory of 3856 4024 4fd695d95e1d73d7bbacee02f59d8319.exe 4fd695d95e1d73d7bbacee02f59d8319.exe PID 4024 wrote to memory of 3856 4024 4fd695d95e1d73d7bbacee02f59d8319.exe 4fd695d95e1d73d7bbacee02f59d8319.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\4fd695d95e1d73d7bbacee02f59d8319.exe"C:\Users\Admin\AppData\Local\Temp\4fd695d95e1d73d7bbacee02f59d8319.exe"1⤵
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c timeout 12⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\timeout.exetimeout 13⤵
- Delays execution with timeout.exe
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C:\Users\Admin\AppData\Local\Temp\4fd695d95e1d73d7bbacee02f59d8319.exe"C:\Users\Admin\AppData\Local\Temp\4fd695d95e1d73d7bbacee02f59d8319.exe"2⤵
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4024 -s 14602⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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memory/1220-118-0x0000000000000000-mapping.dmp
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memory/2096-119-0x0000000000000000-mapping.dmp
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memory/3856-122-0x0000000000400000-0x0000000000412000-memory.dmpFilesize
72KB
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memory/3856-123-0x000000000040C70E-mapping.dmp
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memory/3856-126-0x0000000005940000-0x0000000005941000-memory.dmpFilesize
4KB
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memory/3856-129-0x0000000006420000-0x0000000006421000-memory.dmpFilesize
4KB
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memory/4024-114-0x0000000000900000-0x0000000000901000-memory.dmpFilesize
4KB
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memory/4024-116-0x00000000053B0000-0x00000000053B1000-memory.dmpFilesize
4KB
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memory/4024-117-0x0000000004E30000-0x0000000004E64000-memory.dmpFilesize
208KB
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memory/4024-120-0x0000000006760000-0x0000000006761000-memory.dmpFilesize
4KB
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memory/4024-121-0x0000000007620000-0x0000000007621000-memory.dmpFilesize
4KB