Analysis
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max time kernel
140s -
max time network
190s -
platform
windows7_x64 -
resource
win7-20220414-en -
submitted
01-07-2022 07:06
Static task
static1
Behavioral task
behavioral1
Sample
d43d298aaa1e0d3c77c7deaf09f5b38431455d9ddde5bc8ad86fe7e7433bce2e.exe
Resource
win7-20220414-en
General
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Target
d43d298aaa1e0d3c77c7deaf09f5b38431455d9ddde5bc8ad86fe7e7433bce2e.exe
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Size
365KB
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MD5
c4d31cf47fd14301bb53f5520e15e951
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SHA1
7e557a0bc95d461d2f765424850b8e575aa3b88e
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SHA256
d43d298aaa1e0d3c77c7deaf09f5b38431455d9ddde5bc8ad86fe7e7433bce2e
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SHA512
9bef8fff5a9a0405919052687a92d10e85914f70b6a8f60991ea9c0cde1465c5474d098540f6554eda4a3343114f497591a993f441a3fd75375a22f45197b0d1
Malware Config
Extracted
emotet
Epoch2
86.22.221.170:80
187.144.61.73:443
185.94.252.13:443
46.105.131.87:80
69.164.201.54:8080
190.211.207.11:443
186.4.172.5:8080
167.71.10.37:8080
182.176.132.213:8090
47.41.213.2:22
80.11.163.139:443
186.4.172.5:20
37.157.194.134:443
59.103.164.174:80
136.243.177.26:8080
162.241.208.52:8080
27.4.80.183:443
85.104.59.244:20
212.71.234.16:8080
27.147.163.188:8080
62.75.187.192:8080
200.71.148.138:8080
104.236.246.93:8080
186.75.241.230:80
80.11.163.139:21
104.131.44.150:8080
190.106.97.230:443
178.79.161.166:443
92.233.128.13:143
206.189.98.125:8080
45.33.49.124:443
101.187.237.217:20
190.228.72.244:53
198.199.114.69:8080
181.143.194.138:443
200.113.106.18:21
186.4.172.5:443
200.113.106.18:465
217.160.182.191:8080
186.176.138.171:7080
159.65.25.128:8080
190.145.67.134:8090
182.76.6.2:8080
169.239.182.217:8080
94.192.225.46:80
87.106.139.101:8080
5.196.74.210:8080
115.78.95.230:443
181.143.53.227:21
185.187.198.15:80
78.24.219.147:8080
152.89.236.214:8080
87.230.19.21:8080
201.251.43.69:8080
138.201.140.110:8080
31.172.240.91:8080
190.226.44.20:21
95.128.43.213:8080
189.209.217.49:80
182.176.106.43:995
85.54.169.141:8080
200.51.94.251:80
149.202.153.252:8080
92.222.216.44:8080
91.205.215.66:8080
67.225.229.55:8080
192.81.213.192:8080
86.98.25.30:53
173.212.203.26:8080
24.45.195.162:8443
94.205.247.10:80
199.255.156.210:8080
144.139.247.220:80
31.12.67.62:7080
222.214.218.192:8080
181.31.213.158:8080
133.167.80.63:7080
201.184.105.242:443
24.45.195.162:7080
124.240.198.66:80
211.63.71.72:8080
104.131.11.150:8080
87.106.136.232:8080
190.53.135.159:21
Signatures
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Drops file in System32 directory 1 IoCs
Processes:
sizebuilder.exedescription ioc process File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Temporary Internet Files\counters.dat sizebuilder.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Modifies data under HKEY_USERS 21 IoCs
Processes:
sizebuilder.exedescription ioc process Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" sizebuilder.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad sizebuilder.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{3CA70D7D-21DA-4C88-83CB-2E6F9A9C7437} sizebuilder.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{3CA70D7D-21DA-4C88-83CB-2E6F9A9C7437}\WpadNetworkName = "Network 2" sizebuilder.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\46-32-53-fb-e4-95 sizebuilder.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{3CA70D7D-21DA-4C88-83CB-2E6F9A9C7437}\46-32-53-fb-e4-95 sizebuilder.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\46-32-53-fb-e4-95\WpadDecisionReason = "1" sizebuilder.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 sizebuilder.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix sizebuilder.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 sizebuilder.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{3CA70D7D-21DA-4C88-83CB-2E6F9A9C7437}\WpadDecisionReason = "1" sizebuilder.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0" sizebuilder.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections sizebuilder.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" sizebuilder.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings sizebuilder.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00a5000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 sizebuilder.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{3CA70D7D-21DA-4C88-83CB-2E6F9A9C7437}\WpadDecisionTime = 70446b38368dd801 sizebuilder.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{3CA70D7D-21DA-4C88-83CB-2E6F9A9C7437}\WpadDecision = "0" sizebuilder.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\46-32-53-fb-e4-95\WpadDecisionTime = 70446b38368dd801 sizebuilder.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings sizebuilder.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\46-32-53-fb-e4-95\WpadDecision = "0" sizebuilder.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
sizebuilder.exepid process 1672 sizebuilder.exe 1672 sizebuilder.exe -
Suspicious behavior: RenamesItself 1 IoCs
Processes:
d43d298aaa1e0d3c77c7deaf09f5b38431455d9ddde5bc8ad86fe7e7433bce2e.exepid process 1552 d43d298aaa1e0d3c77c7deaf09f5b38431455d9ddde5bc8ad86fe7e7433bce2e.exe -
Suspicious use of SetWindowsHookEx 8 IoCs
Processes:
d43d298aaa1e0d3c77c7deaf09f5b38431455d9ddde5bc8ad86fe7e7433bce2e.exed43d298aaa1e0d3c77c7deaf09f5b38431455d9ddde5bc8ad86fe7e7433bce2e.exesizebuilder.exesizebuilder.exepid process 2040 d43d298aaa1e0d3c77c7deaf09f5b38431455d9ddde5bc8ad86fe7e7433bce2e.exe 2040 d43d298aaa1e0d3c77c7deaf09f5b38431455d9ddde5bc8ad86fe7e7433bce2e.exe 1552 d43d298aaa1e0d3c77c7deaf09f5b38431455d9ddde5bc8ad86fe7e7433bce2e.exe 1552 d43d298aaa1e0d3c77c7deaf09f5b38431455d9ddde5bc8ad86fe7e7433bce2e.exe 952 sizebuilder.exe 952 sizebuilder.exe 1672 sizebuilder.exe 1672 sizebuilder.exe -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
d43d298aaa1e0d3c77c7deaf09f5b38431455d9ddde5bc8ad86fe7e7433bce2e.exesizebuilder.exedescription pid process target process PID 2040 wrote to memory of 1552 2040 d43d298aaa1e0d3c77c7deaf09f5b38431455d9ddde5bc8ad86fe7e7433bce2e.exe d43d298aaa1e0d3c77c7deaf09f5b38431455d9ddde5bc8ad86fe7e7433bce2e.exe PID 2040 wrote to memory of 1552 2040 d43d298aaa1e0d3c77c7deaf09f5b38431455d9ddde5bc8ad86fe7e7433bce2e.exe d43d298aaa1e0d3c77c7deaf09f5b38431455d9ddde5bc8ad86fe7e7433bce2e.exe PID 2040 wrote to memory of 1552 2040 d43d298aaa1e0d3c77c7deaf09f5b38431455d9ddde5bc8ad86fe7e7433bce2e.exe d43d298aaa1e0d3c77c7deaf09f5b38431455d9ddde5bc8ad86fe7e7433bce2e.exe PID 2040 wrote to memory of 1552 2040 d43d298aaa1e0d3c77c7deaf09f5b38431455d9ddde5bc8ad86fe7e7433bce2e.exe d43d298aaa1e0d3c77c7deaf09f5b38431455d9ddde5bc8ad86fe7e7433bce2e.exe PID 952 wrote to memory of 1672 952 sizebuilder.exe sizebuilder.exe PID 952 wrote to memory of 1672 952 sizebuilder.exe sizebuilder.exe PID 952 wrote to memory of 1672 952 sizebuilder.exe sizebuilder.exe PID 952 wrote to memory of 1672 952 sizebuilder.exe sizebuilder.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\d43d298aaa1e0d3c77c7deaf09f5b38431455d9ddde5bc8ad86fe7e7433bce2e.exe"C:\Users\Admin\AppData\Local\Temp\d43d298aaa1e0d3c77c7deaf09f5b38431455d9ddde5bc8ad86fe7e7433bce2e.exe"1⤵
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\d43d298aaa1e0d3c77c7deaf09f5b38431455d9ddde5bc8ad86fe7e7433bce2e.exe--b117fbaa2⤵
- Suspicious behavior: RenamesItself
- Suspicious use of SetWindowsHookEx
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C:\Windows\SysWOW64\sizebuilder.exe"C:\Windows\SysWOW64\sizebuilder.exe"1⤵
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\sizebuilder.exe--ee31db302⤵
- Drops file in System32 directory
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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memory/952-69-0x0000000000530000-0x0000000000544000-memory.dmpFilesize
80KB
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memory/1552-60-0x0000000000000000-mapping.dmp
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memory/1552-63-0x0000000000250000-0x0000000000264000-memory.dmpFilesize
80KB
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memory/1672-74-0x0000000000000000-mapping.dmp
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memory/1672-76-0x00000000003E0000-0x00000000003F4000-memory.dmpFilesize
80KB
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memory/2040-54-0x0000000075841000-0x0000000075843000-memory.dmpFilesize
8KB
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memory/2040-55-0x00000000001C0000-0x00000000001D4000-memory.dmpFilesize
80KB
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memory/2040-61-0x00000000001B0000-0x00000000001BF000-memory.dmpFilesize
60KB