Analysis
-
max time kernel
58s -
max time network
104s -
platform
windows10-1703_x64 -
resource
win10-20230220-en -
resource tags
arch:x64arch:x86image:win10-20230220-enlocale:en-usos:windows10-1703-x64system -
submitted
23-03-2023 00:49
Static task
static1
Behavioral task
behavioral1
Sample
af0c7d355bb6a495d038fd05217209054107d31aa6199c491b74ae3d24b11c7e.wsf
Resource
win10-20230220-en
Behavioral task
behavioral2
Sample
af0c7d355bb6a495d038fd05217209054107d31aa6199c491b74ae3d24b11c7e.wsf
Resource
win10-20230220-en
General
-
Target
af0c7d355bb6a495d038fd05217209054107d31aa6199c491b74ae3d24b11c7e.wsf
-
Size
61KB
-
MD5
45282862aeb428ffb5d4986704a8f4d5
-
SHA1
fa2b0a82f3ca6bc7c00704556c9494b303613972
-
SHA256
af0c7d355bb6a495d038fd05217209054107d31aa6199c491b74ae3d24b11c7e
-
SHA512
db6457af502f45665ce4cc6573c5746607d8ffc661f0dcb224beceed93886f6c6194561cacc0efa543f0b2f62db976742f42c6c8102c5b11b65329757110b1db
-
SSDEEP
768:6hKs7p4MAPEQbhh/8avllsFEaN3K19Z5zkzCIi5:6L7p4MafVLYEaN3K19ZWzCn5
Malware Config
Extracted
emotet
Epoch5
103.85.95.4:8080
103.224.241.74:8080
178.238.225.252:8080
37.59.103.148:8080
78.47.204.80:443
138.197.14.67:8080
128.199.242.164:8080
54.37.228.122:443
37.44.244.177:8080
139.59.80.108:8080
218.38.121.17:443
82.98.180.154:7080
114.79.130.68:443
159.65.135.222:7080
174.138.33.49:7080
195.77.239.39:8080
193.194.92.175:443
198.199.70.22:8080
85.214.67.203:8080
93.84.115.205:7080
186.250.48.5:443
46.101.98.60:8080
160.16.143.191:8080
64.227.55.231:8080
175.126.176.79:8080
85.25.120.45:8080
178.62.112.199:8080
185.148.169.10:8080
128.199.217.206:443
103.41.204.169:8080
209.239.112.82:8080
202.28.34.99:8080
139.196.72.155:8080
87.106.97.83:7080
93.104.209.107:8080
104.244.79.94:443
115.178.55.22:80
83.229.80.93:8080
103.254.12.236:7080
62.171.178.147:8080
Signatures
-
Blocklisted process makes network request 1 IoCs
Processes:
WScript.exeflow pid process 2 372 WScript.exe -
Downloads MZ/PE file
-
Loads dropped DLL 2 IoCs
Processes:
regsvr32.exeregsvr32.exepid process 4316 regsvr32.exe 4064 regsvr32.exe -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
regsvr32.exedescription ioc process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\LEeEERtcnUj.dll = "C:\\Windows\\system32\\regsvr32.exe \"C:\\Windows\\system32\\CroQmIaJARbqIx\\LEeEERtcnUj.dll\"" regsvr32.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
-
Script User-Agent 1 IoCs
Uses user-agent string associated with script host/environment.
Processes:
description flow ioc HTTP User-Agent header 2 Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5) -
Suspicious behavior: EnumeratesProcesses 6 IoCs
Processes:
regsvr32.exeregsvr32.exepid process 4316 regsvr32.exe 4316 regsvr32.exe 4064 regsvr32.exe 4064 regsvr32.exe 4064 regsvr32.exe 4064 regsvr32.exe -
Suspicious use of WriteProcessMemory 4 IoCs
Processes:
WScript.exeregsvr32.exedescription pid process target process PID 372 wrote to memory of 4316 372 WScript.exe regsvr32.exe PID 372 wrote to memory of 4316 372 WScript.exe regsvr32.exe PID 4316 wrote to memory of 4064 4316 regsvr32.exe regsvr32.exe PID 4316 wrote to memory of 4064 4316 regsvr32.exe regsvr32.exe
Processes
-
C:\Windows\System32\WScript.exe"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\af0c7d355bb6a495d038fd05217209054107d31aa6199c491b74ae3d24b11c7e.wsf"1⤵
- Blocklisted process makes network request
- Suspicious use of WriteProcessMemory
PID:372 -
C:\Windows\System32\regsvr32.exe"C:\Windows\System32\regsvr32.exe" "C:\Users\Admin\AppData\Local\Temp\rad6A946.tmp.dll"2⤵
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4316 -
C:\Windows\system32\regsvr32.exeC:\Windows\system32\regsvr32.exe "C:\Windows\system32\CroQmIaJARbqIx\LEeEERtcnUj.dll"3⤵
- Loads dropped DLL
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
PID:4064
-
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
561KB
MD5c901c8089c5e017f8e9b4b15c8ef154f
SHA1336c2bea43bfa2e8afd27a164dba640f36c0013c
SHA256fd79e8fa5e3801101a1305b6aba7a5e7fdc852ed9036d6d9a5210be414a5cc5a
SHA5129ff052f9fc9cc3cf74b170f76d6a20a01c5dbb74b2d97edc9e55b75f52b408f3104e49bf290773bd63d216f2787d945aa7d954b58e927c99e1db18c6a7d74ade
-
Filesize
561KB
MD5c901c8089c5e017f8e9b4b15c8ef154f
SHA1336c2bea43bfa2e8afd27a164dba640f36c0013c
SHA256fd79e8fa5e3801101a1305b6aba7a5e7fdc852ed9036d6d9a5210be414a5cc5a
SHA5129ff052f9fc9cc3cf74b170f76d6a20a01c5dbb74b2d97edc9e55b75f52b408f3104e49bf290773bd63d216f2787d945aa7d954b58e927c99e1db18c6a7d74ade
-
Filesize
561KB
MD5c901c8089c5e017f8e9b4b15c8ef154f
SHA1336c2bea43bfa2e8afd27a164dba640f36c0013c
SHA256fd79e8fa5e3801101a1305b6aba7a5e7fdc852ed9036d6d9a5210be414a5cc5a
SHA5129ff052f9fc9cc3cf74b170f76d6a20a01c5dbb74b2d97edc9e55b75f52b408f3104e49bf290773bd63d216f2787d945aa7d954b58e927c99e1db18c6a7d74ade