Analysis
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max time kernel
144s -
max time network
165s -
platform
windows10-2004_x64 -
resource
win10v2004-20220414-en -
submitted
21-05-2022 18:31
Static task
static1
Behavioral task
behavioral1
Sample
sample.exe
Resource
win7-20220414-en
General
-
Target
sample.exe
-
Size
76KB
-
MD5
cbc848726338397433ca80ae16872b78
-
SHA1
50178c72672dbf0ba189778f70054db01c5bb707
-
SHA256
43cbb32a4a889bb5a784da2bca32fd17c8d5e178473627c6e0e370bfb442be9b
-
SHA512
08b4a377376be23689180ed070ed9afe7f39180b2941904ef8b4aaa006fc8adaf3befd1c6a5118359a5602ccc8459e3a18454c0423e0d24993e81e736a30cb07
Malware Config
Extracted
emotet
Epoch1
82.163.245.38:80
209.126.6.222:8080
5.153.250.14:8080
186.70.127.199:8090
190.128.173.10:80
190.195.129.227:8090
91.219.169.180:80
45.173.88.33:80
185.33.0.233:80
188.2.217.94:80
207.144.103.227:80
45.161.242.102:80
219.92.13.25:80
190.163.31.26:80
68.183.170.114:8080
191.99.160.58:80
73.213.208.163:80
94.176.234.118:443
104.131.41.185:8080
45.33.77.42:8080
114.109.179.60:80
213.60.96.117:80
41.84.248.134:443
83.169.21.32:7080
82.76.111.249:443
217.199.160.224:7080
80.249.176.206:80
82.196.15.205:8080
204.225.249.100:7080
190.6.193.152:8080
189.2.177.210:443
177.72.13.80:80
24.135.1.177:80
190.115.18.139:8080
192.241.146.84:8080
209.236.123.42:8080
213.176.36.147:8080
5.196.35.138:7080
104.131.103.37:8080
51.159.23.217:443
190.147.137.153:443
149.62.173.247:8080
137.74.106.111:7080
61.92.159.208:8080
177.73.0.98:443
24.135.198.218:80
85.105.140.135:443
187.162.248.237:80
46.28.111.142:7080
116.125.120.88:443
87.106.46.107:8080
212.71.237.140:8080
12.162.84.2:8080
178.79.163.131:8080
111.67.12.221:8080
95.9.180.128:80
192.241.143.52:8080
201.171.150.41:443
24.148.98.177:80
190.190.148.27:8080
186.103.141.250:443
72.47.248.48:7080
68.183.190.199:8080
172.104.169.32:8080
185.94.252.12:80
178.250.54.208:8080
91.222.77.105:80
217.13.106.14:8080
77.90.136.129:8080
2.47.112.152:80
95.180.234.21:80
186.250.52.226:8080
181.129.96.162:8080
77.55.211.77:8080
185.94.252.27:443
174.100.27.229:80
177.74.228.34:80
67.247.242.247:80
95.85.151.205:80
70.32.115.157:8080
89.32.150.160:8080
212.93.117.170:80
50.28.51.143:8080
94.206.45.18:80
202.4.57.96:80
191.182.6.118:80
58.171.153.81:80
143.0.87.101:80
51.255.165.160:8080
70.32.84.74:8080
73.116.193.136:80
170.81.48.2:80
Signatures
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suricata: ET MALWARE Win32/Emotet CnC Activity (POST) M8
suricata: ET MALWARE Win32/Emotet CnC Activity (POST) M8
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suricata: ET MALWARE Win32/Emotet CnC Activity (POST) M9
suricata: ET MALWARE Win32/Emotet CnC Activity (POST) M9
-
Processes:
resource yara_rule behavioral2/memory/3948-130-0x0000000000950000-0x000000000095C000-memory.dmp emotet behavioral2/memory/3948-134-0x0000000000940000-0x0000000000949000-memory.dmp emotet behavioral2/memory/3864-137-0x0000000002200000-0x000000000220C000-memory.dmp emotet -
Executes dropped EXE 1 IoCs
Processes:
efswrt.exepid process 3864 efswrt.exe -
Drops file in System32 directory 1 IoCs
Processes:
sample.exedescription ioc process File opened for modification C:\Windows\SysWOW64\dllhst3g\efswrt.exe sample.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
-
Suspicious behavior: EnumeratesProcesses 20 IoCs
Processes:
efswrt.exepid process 3864 efswrt.exe 3864 efswrt.exe 3864 efswrt.exe 3864 efswrt.exe 3864 efswrt.exe 3864 efswrt.exe 3864 efswrt.exe 3864 efswrt.exe 3864 efswrt.exe 3864 efswrt.exe 3864 efswrt.exe 3864 efswrt.exe 3864 efswrt.exe 3864 efswrt.exe 3864 efswrt.exe 3864 efswrt.exe 3864 efswrt.exe 3864 efswrt.exe 3864 efswrt.exe 3864 efswrt.exe -
Suspicious behavior: RenamesItself 1 IoCs
Processes:
sample.exepid process 3948 sample.exe -
Suspicious use of SetWindowsHookEx 4 IoCs
Processes:
sample.exeefswrt.exepid process 3948 sample.exe 3948 sample.exe 3864 efswrt.exe 3864 efswrt.exe -
Suspicious use of WriteProcessMemory 3 IoCs
Processes:
sample.exedescription pid process target process PID 3948 wrote to memory of 3864 3948 sample.exe efswrt.exe PID 3948 wrote to memory of 3864 3948 sample.exe efswrt.exe PID 3948 wrote to memory of 3864 3948 sample.exe efswrt.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\sample.exe"C:\Users\Admin\AppData\Local\Temp\sample.exe"1⤵
- Drops file in System32 directory
- Suspicious behavior: RenamesItself
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\dllhst3g\efswrt.exe"C:\Windows\SysWOW64\dllhst3g\efswrt.exe"2⤵
- Executes dropped EXE
- 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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C:\Windows\SysWOW64\dllhst3g\efswrt.exeFilesize
76KB
MD5cbc848726338397433ca80ae16872b78
SHA150178c72672dbf0ba189778f70054db01c5bb707
SHA25643cbb32a4a889bb5a784da2bca32fd17c8d5e178473627c6e0e370bfb442be9b
SHA51208b4a377376be23689180ed070ed9afe7f39180b2941904ef8b4aaa006fc8adaf3befd1c6a5118359a5602ccc8459e3a18454c0423e0d24993e81e736a30cb07
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memory/3864-135-0x0000000000000000-mapping.dmp
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memory/3864-137-0x0000000002200000-0x000000000220C000-memory.dmpFilesize
48KB
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memory/3948-130-0x0000000000950000-0x000000000095C000-memory.dmpFilesize
48KB
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memory/3948-134-0x0000000000940000-0x0000000000949000-memory.dmpFilesize
36KB