Analysis
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max time kernel
135s -
max time network
146s -
platform
windows7_x64 -
resource
win7v20201028 -
submitted
09-11-2020 19:43
Static task
static1
Behavioral task
behavioral1
Sample
office82.exe
Resource
win7v20201028
General
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Target
office82.exe
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Size
348KB
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MD5
ee6b41b84b38df2ca1ababd9d3d8f4a0
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SHA1
2df1f670d50cb1736a3623dd04973de093e2d512
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SHA256
fec56ffb3c5a61bffba235044da127eae17d9772dbd3817b8a5ce8cad0e93cb1
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SHA512
38435c3105967b41159542530c7043254a7752b9dd578fc89fb6f61075feed7a4dae26fac20ffb916ad6dbca9809a5fe873fa0858c137bc92c6adf9f87261291
Malware Config
Signatures
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Executes dropped EXE 1 IoCs
Processes:
Client.exepid process 1748 Client.exe -
Loads dropped DLL 1 IoCs
Processes:
office82.exepid process 1056 office82.exe -
Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
Processes:
flow ioc 3 ip-api.com -
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 use of AdjustPrivilegeToken 2 IoCs
Processes:
office82.exeClient.exedescription pid process Token: SeDebugPrivilege 1056 office82.exe Token: SeDebugPrivilege 1748 Client.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
Client.exepid process 1748 Client.exe -
Suspicious use of WriteProcessMemory 12 IoCs
Processes:
office82.exeClient.exedescription pid process target process PID 1056 wrote to memory of 1676 1056 office82.exe schtasks.exe PID 1056 wrote to memory of 1676 1056 office82.exe schtasks.exe PID 1056 wrote to memory of 1676 1056 office82.exe schtasks.exe PID 1056 wrote to memory of 1676 1056 office82.exe schtasks.exe PID 1056 wrote to memory of 1748 1056 office82.exe Client.exe PID 1056 wrote to memory of 1748 1056 office82.exe Client.exe PID 1056 wrote to memory of 1748 1056 office82.exe Client.exe PID 1056 wrote to memory of 1748 1056 office82.exe Client.exe PID 1748 wrote to memory of 600 1748 Client.exe schtasks.exe PID 1748 wrote to memory of 600 1748 Client.exe schtasks.exe PID 1748 wrote to memory of 600 1748 Client.exe schtasks.exe PID 1748 wrote to memory of 600 1748 Client.exe schtasks.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\office82.exe"C:\Users\Admin\AppData\Local\Temp\office82.exe"1⤵
- Loads dropped DLL
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"schtasks" /create /tn "msoffice2" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\office82.exe" /rl HIGHEST /f2⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"schtasks" /create /tn "msoffice2" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f3⤵
- 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\Roaming\SubDir\Client.exeMD5
ee6b41b84b38df2ca1ababd9d3d8f4a0
SHA12df1f670d50cb1736a3623dd04973de093e2d512
SHA256fec56ffb3c5a61bffba235044da127eae17d9772dbd3817b8a5ce8cad0e93cb1
SHA51238435c3105967b41159542530c7043254a7752b9dd578fc89fb6f61075feed7a4dae26fac20ffb916ad6dbca9809a5fe873fa0858c137bc92c6adf9f87261291
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C:\Users\Admin\AppData\Roaming\SubDir\Client.exeMD5
ee6b41b84b38df2ca1ababd9d3d8f4a0
SHA12df1f670d50cb1736a3623dd04973de093e2d512
SHA256fec56ffb3c5a61bffba235044da127eae17d9772dbd3817b8a5ce8cad0e93cb1
SHA51238435c3105967b41159542530c7043254a7752b9dd578fc89fb6f61075feed7a4dae26fac20ffb916ad6dbca9809a5fe873fa0858c137bc92c6adf9f87261291
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\Users\Admin\AppData\Roaming\SubDir\Client.exeMD5
ee6b41b84b38df2ca1ababd9d3d8f4a0
SHA12df1f670d50cb1736a3623dd04973de093e2d512
SHA256fec56ffb3c5a61bffba235044da127eae17d9772dbd3817b8a5ce8cad0e93cb1
SHA51238435c3105967b41159542530c7043254a7752b9dd578fc89fb6f61075feed7a4dae26fac20ffb916ad6dbca9809a5fe873fa0858c137bc92c6adf9f87261291
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memory/600-11-0x0000000000000000-mapping.dmp
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memory/1056-0-0x0000000074CF0000-0x00000000753DE000-memory.dmpFilesize
6.9MB
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memory/1056-1-0x0000000000340000-0x0000000000341000-memory.dmpFilesize
4KB
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memory/1676-3-0x0000000000000000-mapping.dmp
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memory/1748-5-0x0000000000000000-mapping.dmp
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memory/1748-8-0x0000000074CF0000-0x00000000753DE000-memory.dmpFilesize
6.9MB
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memory/1748-9-0x0000000000900000-0x0000000000901000-memory.dmpFilesize
4KB