Analysis
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max time kernel
149s -
max time network
150s -
platform
windows10_x64 -
resource
win10v20210410 -
submitted
03-05-2021 19:11
Static task
static1
Behavioral task
behavioral1
Sample
086789aa35a788528d13e3601d24f888.exe
Resource
win7v20210408
General
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Target
086789aa35a788528d13e3601d24f888.exe
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Size
1.1MB
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MD5
086789aa35a788528d13e3601d24f888
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SHA1
e7f740dd7a89334a7e5c358bda8bfcf492b9c1fc
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SHA256
82d0600bcebe2f55971be96182fc9c164c15308c214560a8c90d979aa03426e4
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SHA512
e40d0c1b3b3a05ec93cb19aa2f2f2bafa24ab14e9c0bd8b9029a2c487cdb3ccb4bc12001ccdcf2baa6cef280c1638d23848306f2b9254c9fb022b609047ce5ee
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
-
bdos
false
-
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/3980-123-0x000000000040C70E-mapping.dmp asyncrat behavioral2/memory/3980-122-0x0000000000400000-0x0000000000412000-memory.dmp asyncrat -
Suspicious use of NtSetInformationThreadHideFromDebugger 12 IoCs
Processes:
086789aa35a788528d13e3601d24f888.exepid process 4048 086789aa35a788528d13e3601d24f888.exe 4048 086789aa35a788528d13e3601d24f888.exe 4048 086789aa35a788528d13e3601d24f888.exe 4048 086789aa35a788528d13e3601d24f888.exe 4048 086789aa35a788528d13e3601d24f888.exe 4048 086789aa35a788528d13e3601d24f888.exe 4048 086789aa35a788528d13e3601d24f888.exe 4048 086789aa35a788528d13e3601d24f888.exe 4048 086789aa35a788528d13e3601d24f888.exe 4048 086789aa35a788528d13e3601d24f888.exe 4048 086789aa35a788528d13e3601d24f888.exe 4048 086789aa35a788528d13e3601d24f888.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
086789aa35a788528d13e3601d24f888.exedescription pid process target process PID 4048 set thread context of 3980 4048 086789aa35a788528d13e3601d24f888.exe 086789aa35a788528d13e3601d24f888.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 540 4048 WerFault.exe 086789aa35a788528d13e3601d24f888.exe -
Delays execution with timeout.exe 1 IoCs
Processes:
timeout.exepid process 2932 timeout.exe -
Suspicious behavior: EnumeratesProcesses 17 IoCs
Processes:
086789aa35a788528d13e3601d24f888.exeWerFault.exepid process 4048 086789aa35a788528d13e3601d24f888.exe 4048 086789aa35a788528d13e3601d24f888.exe 4048 086789aa35a788528d13e3601d24f888.exe 540 WerFault.exe 540 WerFault.exe 540 WerFault.exe 540 WerFault.exe 540 WerFault.exe 540 WerFault.exe 540 WerFault.exe 540 WerFault.exe 540 WerFault.exe 540 WerFault.exe 540 WerFault.exe 540 WerFault.exe 540 WerFault.exe 540 WerFault.exe -
Suspicious use of AdjustPrivilegeToken 5 IoCs
Processes:
086789aa35a788528d13e3601d24f888.exeWerFault.exe086789aa35a788528d13e3601d24f888.exedescription pid process Token: SeDebugPrivilege 4048 086789aa35a788528d13e3601d24f888.exe Token: SeRestorePrivilege 540 WerFault.exe Token: SeBackupPrivilege 540 WerFault.exe Token: SeDebugPrivilege 540 WerFault.exe Token: SeDebugPrivilege 3980 086789aa35a788528d13e3601d24f888.exe -
Suspicious use of WriteProcessMemory 14 IoCs
Processes:
086789aa35a788528d13e3601d24f888.execmd.exedescription pid process target process PID 4048 wrote to memory of 3808 4048 086789aa35a788528d13e3601d24f888.exe cmd.exe PID 4048 wrote to memory of 3808 4048 086789aa35a788528d13e3601d24f888.exe cmd.exe PID 4048 wrote to memory of 3808 4048 086789aa35a788528d13e3601d24f888.exe cmd.exe PID 3808 wrote to memory of 2932 3808 cmd.exe timeout.exe PID 3808 wrote to memory of 2932 3808 cmd.exe timeout.exe PID 3808 wrote to memory of 2932 3808 cmd.exe timeout.exe PID 4048 wrote to memory of 3980 4048 086789aa35a788528d13e3601d24f888.exe 086789aa35a788528d13e3601d24f888.exe PID 4048 wrote to memory of 3980 4048 086789aa35a788528d13e3601d24f888.exe 086789aa35a788528d13e3601d24f888.exe PID 4048 wrote to memory of 3980 4048 086789aa35a788528d13e3601d24f888.exe 086789aa35a788528d13e3601d24f888.exe PID 4048 wrote to memory of 3980 4048 086789aa35a788528d13e3601d24f888.exe 086789aa35a788528d13e3601d24f888.exe PID 4048 wrote to memory of 3980 4048 086789aa35a788528d13e3601d24f888.exe 086789aa35a788528d13e3601d24f888.exe PID 4048 wrote to memory of 3980 4048 086789aa35a788528d13e3601d24f888.exe 086789aa35a788528d13e3601d24f888.exe PID 4048 wrote to memory of 3980 4048 086789aa35a788528d13e3601d24f888.exe 086789aa35a788528d13e3601d24f888.exe PID 4048 wrote to memory of 3980 4048 086789aa35a788528d13e3601d24f888.exe 086789aa35a788528d13e3601d24f888.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\086789aa35a788528d13e3601d24f888.exe"C:\Users\Admin\AppData\Local\Temp\086789aa35a788528d13e3601d24f888.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\086789aa35a788528d13e3601d24f888.exe"C:\Users\Admin\AppData\Local\Temp\086789aa35a788528d13e3601d24f888.exe"2⤵
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4048 -s 14962⤵
- 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/2932-120-0x0000000000000000-mapping.dmp
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memory/3808-119-0x0000000000000000-mapping.dmp
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memory/3980-123-0x000000000040C70E-mapping.dmp
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memory/3980-122-0x0000000000400000-0x0000000000412000-memory.dmpFilesize
72KB
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memory/3980-126-0x0000000005580000-0x0000000005581000-memory.dmpFilesize
4KB
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memory/3980-129-0x0000000006050000-0x0000000006051000-memory.dmpFilesize
4KB
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memory/4048-114-0x0000000000860000-0x0000000000861000-memory.dmpFilesize
4KB
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memory/4048-116-0x00000000051B0000-0x00000000051B1000-memory.dmpFilesize
4KB
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memory/4048-117-0x0000000002CE0000-0x0000000002D08000-memory.dmpFilesize
160KB
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memory/4048-118-0x0000000002D40000-0x0000000002D41000-memory.dmpFilesize
4KB
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memory/4048-121-0x0000000006360000-0x0000000006361000-memory.dmpFilesize
4KB