Analysis
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max time kernel
145s -
max time network
146s -
platform
windows10_x64 -
resource
win10v20210410 -
submitted
12-05-2021 17:07
Behavioral task
behavioral1
Sample
c527325d_by_Libranalysis.xls
Resource
win7v20210410
General
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Target
c527325d_by_Libranalysis.xls
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Size
277KB
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MD5
c527325d4d0b51734637b5344a3df760
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SHA1
f71b0baa85537ec1709701f39e8e9fd95f9b3d62
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SHA256
468cd4b5d89425cd29bb028696804ed339eb2c0c37b010b62442fbb5a8f778ba
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SHA512
074cfe3ecc88e982a704e979a3d63a7c286a30c8656dc71cf528336c7862090cdd134ebf641d336b0b7b6092838b007649bead23fe4cc1039a0a5611dc61f18c
Malware Config
Extracted
trickbot
2000029
net15
103.66.72.217:443
117.252.68.211:443
103.124.173.35:443
115.73.211.230:443
117.54.250.246:443
131.0.112.122:443
102.176.221.78:443
181.176.161.143:443
154.79.251.172:443
103.111.199.76:443
103.54.41.193:443
154.79.244.182:443
154.79.245.158:443
139.255.116.42:443
178.254.161.250:443
178.134.47.166:443
158.181.179.229:443
103.90.197.33:443
109.207.165.40:443
178.72.192.20:443
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autorunName:pwgrabbName:pwgrabc
Signatures
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Process spawned unexpected child process 1 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
Processes:
rundll32.exedescription pid pid_target process target process Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 1908 3196 rundll32.exe EXCEL.EXE -
Downloads MZ/PE file
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Loads dropped DLL 1 IoCs
Processes:
rundll32.exepid process 3476 rundll32.exe -
Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
EXCEL.EXEdescription ioc process Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString EXCEL.EXE -
Enumerates system info in registry 2 TTPs 3 IoCs
Processes:
EXCEL.EXEdescription ioc process Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU EXCEL.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
EXCEL.EXEpid process 3196 EXCEL.EXE -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
wermgr.exedescription pid process Token: SeDebugPrivilege 1548 wermgr.exe -
Suspicious use of SetWindowsHookEx 12 IoCs
Processes:
EXCEL.EXEpid process 3196 EXCEL.EXE 3196 EXCEL.EXE 3196 EXCEL.EXE 3196 EXCEL.EXE 3196 EXCEL.EXE 3196 EXCEL.EXE 3196 EXCEL.EXE 3196 EXCEL.EXE 3196 EXCEL.EXE 3196 EXCEL.EXE 3196 EXCEL.EXE 3196 EXCEL.EXE -
Suspicious use of WriteProcessMemory 9 IoCs
Processes:
EXCEL.EXErundll32.exerundll32.exedescription pid process target process PID 3196 wrote to memory of 1908 3196 EXCEL.EXE rundll32.exe PID 3196 wrote to memory of 1908 3196 EXCEL.EXE rundll32.exe PID 1908 wrote to memory of 3476 1908 rundll32.exe rundll32.exe PID 1908 wrote to memory of 3476 1908 rundll32.exe rundll32.exe PID 1908 wrote to memory of 3476 1908 rundll32.exe rundll32.exe PID 3476 wrote to memory of 1548 3476 rundll32.exe wermgr.exe PID 3476 wrote to memory of 1548 3476 rundll32.exe wermgr.exe PID 3476 wrote to memory of 1548 3476 rundll32.exe wermgr.exe PID 3476 wrote to memory of 1548 3476 rundll32.exe wermgr.exe
Processes
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C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\c527325d_by_Libranalysis.xls"1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3196 -
C:\Windows\SYSTEM32\rundll32.exerundll32 ..\hsdksksk.iem,StartW2⤵
- Process spawned unexpected child process
- Suspicious use of WriteProcessMemory
PID:1908 -
C:\Windows\SysWOW64\rundll32.exerundll32 ..\hsdksksk.iem,StartW3⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:3476 -
C:\Windows\system32\wermgr.exeC:\Windows\system32\wermgr.exe4⤵
- Suspicious use of AdjustPrivilegeToken
PID:1548
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\hsdksksk.iemMD5
3bb9fe6b7e6b4d9c3a3c83de6aacd952
SHA157c343ae5e95fe702b759737522e85fe9e97fe5e
SHA256697dea4b154178e8de096c66167b539aa4465155d294b11765f1a1886eb7c56d
SHA5121e98417c6c48e0bf405ae5feda4193c91a3b385f387f33d79fba3dc6f7aa7571444885e6628b7ca6075887bfbec3bd17e0782c11a1c45a7d4b1a139849ca4df0
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\Users\Admin\hsdksksk.iemMD5
3bb9fe6b7e6b4d9c3a3c83de6aacd952
SHA157c343ae5e95fe702b759737522e85fe9e97fe5e
SHA256697dea4b154178e8de096c66167b539aa4465155d294b11765f1a1886eb7c56d
SHA5121e98417c6c48e0bf405ae5feda4193c91a3b385f387f33d79fba3dc6f7aa7571444885e6628b7ca6075887bfbec3bd17e0782c11a1c45a7d4b1a139849ca4df0
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memory/1548-189-0x00000215AEC00000-0x00000215AEC01000-memory.dmpFilesize
4KB
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memory/1548-188-0x00000215AEAF0000-0x00000215AEB18000-memory.dmpFilesize
160KB
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memory/1548-184-0x0000000000000000-mapping.dmp
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memory/1908-179-0x0000000000000000-mapping.dmp
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memory/3196-118-0x00007FFCBABC0000-0x00007FFCBABD0000-memory.dmpFilesize
64KB
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memory/3196-123-0x00007FFCD9620000-0x00007FFCDB515000-memory.dmpFilesize
31.0MB
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memory/3196-122-0x00007FFCDB520000-0x00007FFCDC60E000-memory.dmpFilesize
16.9MB
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memory/3196-121-0x00007FFCBABC0000-0x00007FFCBABD0000-memory.dmpFilesize
64KB
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memory/3196-114-0x00007FF6A6B60000-0x00007FF6AA116000-memory.dmpFilesize
53.7MB
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memory/3196-117-0x00007FFCBABC0000-0x00007FFCBABD0000-memory.dmpFilesize
64KB
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memory/3196-116-0x00007FFCBABC0000-0x00007FFCBABD0000-memory.dmpFilesize
64KB
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memory/3196-115-0x00007FFCBABC0000-0x00007FFCBABD0000-memory.dmpFilesize
64KB
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memory/3476-181-0x0000000000000000-mapping.dmp
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memory/3476-183-0x0000000004000000-0x000000000408E000-memory.dmpFilesize
568KB
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memory/3476-185-0x0000000004230000-0x0000000004273000-memory.dmpFilesize
268KB
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memory/3476-187-0x0000000002751000-0x0000000002753000-memory.dmpFilesize
8KB
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memory/3476-186-0x00000000042C0000-0x00000000042C1000-memory.dmpFilesize
4KB