Analysis
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max time kernel
141s -
max time network
133s -
platform
windows10-1703_x64 -
resource
win10-20230220-en -
resource tags
arch:x64arch:x86image:win10-20230220-enlocale:en-usos:windows10-1703-x64system -
submitted
21-03-2023 22:51
Static task
static1
General
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Target
K-1 03.21.2023.one
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Size
280KB
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MD5
b1a10568aa1e4a47ad2aa35788edc0af
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SHA1
dd6ba6ae1680e4245f5ecc22ee12a18b9e16db2d
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SHA256
e173ecebfd5b01766dd8184250d5f2d442507b9b097e4ced319c246b78550d85
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SHA512
9dfd246820c9d705bd54f3118d581063ceadfdae04d0cd047dc66e19d6a5c29fee0195e7a5671854d5c9886a37a83f85d7e5aacd5d8c8df1cfa13384e3fa717e
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SSDEEP
3072:e57pvc2vetOepE76wtghUVkJlD1HUjCuitewu4UhKg+jbJDDO7UckjjwQV:u1veXwtVElijRLwuzKg+jb1UkUa
Malware Config
Extracted
emotet
Epoch4
213.239.212.5:443
129.232.188.93:443
103.43.75.120:443
197.242.150.244:8080
1.234.2.232:8080
110.232.117.186:8080
95.217.221.146:8080
159.89.202.34:443
159.65.88.10:8080
82.223.21.224:8080
169.57.156.166:8080
45.176.232.124:443
45.235.8.30:8080
173.212.193.249:8080
107.170.39.149:8080
119.59.103.152:8080
167.172.199.165:8080
91.207.28.33:8080
185.4.135.165:8080
104.168.155.143:8080
206.189.28.199:8080
79.137.35.198:8080
103.132.242.26:8080
202.129.205.3:8080
103.75.201.2:443
149.56.131.28:8080
5.135.159.50:443
172.105.226.75:8080
201.94.166.162:443
115.68.227.76:8080
164.90.222.65:443
186.194.240.217:443
153.126.146.25:7080
187.63.160.88:80
209.126.85.32:8080
72.15.201.15:8080
153.92.5.27:8080
167.172.253.162:8080
147.139.166.154:8080
163.44.196.120:8080
183.111.227.137:8080
139.59.126.41:443
164.68.99.3:8080
188.44.20.25:443
94.23.45.86:4143
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:
WScript.exedescription pid pid_target process target process Parent C:\Program Files\Microsoft Office\Root\Office16\ONENOTE.EXE is not expected to spawn this process 4952 1012 WScript.exe ONENOTE.EXE -
Blocklisted process makes network request 11 IoCs
Processes:
WScript.exeflow pid process 21 4952 WScript.exe 23 4952 WScript.exe 27 4952 WScript.exe 30 4952 WScript.exe 33 4952 WScript.exe 36 4952 WScript.exe 39 4952 WScript.exe 41 4952 WScript.exe 43 4952 WScript.exe 47 4952 WScript.exe 49 4952 WScript.exe -
Loads dropped DLL 1 IoCs
Processes:
regsvr32.exepid process 3836 regsvr32.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
ONENOTE.EXEdescription ioc process Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 ONENOTE.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz ONENOTE.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString ONENOTE.EXE -
Enumerates system info in registry 2 TTPs 3 IoCs
Processes:
ONENOTE.EXEdescription ioc process Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS ONENOTE.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily ONENOTE.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU ONENOTE.EXE -
Suspicious behavior: AddClipboardFormatListener 2 IoCs
Processes:
ONENOTE.EXEpid process 1012 ONENOTE.EXE 1012 ONENOTE.EXE -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
ONENOTE.EXEregsvr32.exepid process 1012 ONENOTE.EXE 1012 ONENOTE.EXE 3836 regsvr32.exe 3836 regsvr32.exe -
Suspicious use of SetWindowsHookEx 14 IoCs
Processes:
ONENOTE.EXEpid process 1012 ONENOTE.EXE 1012 ONENOTE.EXE 1012 ONENOTE.EXE 1012 ONENOTE.EXE 1012 ONENOTE.EXE 1012 ONENOTE.EXE 1012 ONENOTE.EXE 1012 ONENOTE.EXE 1012 ONENOTE.EXE 1012 ONENOTE.EXE 1012 ONENOTE.EXE 1012 ONENOTE.EXE 1012 ONENOTE.EXE 1012 ONENOTE.EXE -
Suspicious use of WriteProcessMemory 6 IoCs
Processes:
ONENOTE.EXEWScript.exeregsvr32.exedescription pid process target process PID 1012 wrote to memory of 4952 1012 ONENOTE.EXE WScript.exe PID 1012 wrote to memory of 4952 1012 ONENOTE.EXE WScript.exe PID 4952 wrote to memory of 3836 4952 WScript.exe regsvr32.exe PID 4952 wrote to memory of 3836 4952 WScript.exe regsvr32.exe PID 3836 wrote to memory of 4228 3836 regsvr32.exe regsvr32.exe PID 3836 wrote to memory of 4228 3836 regsvr32.exe regsvr32.exe -
Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
Processes
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C:\Program Files\Microsoft Office\Root\Office16\ONENOTE.EXE"C:\Program Files\Microsoft Office\Root\Office16\ONENOTE.EXE" "C:\Users\Admin\AppData\Local\Temp\K-1 03.21.2023.one"1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1012 -
C:\Windows\System32\WScript.exe"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\OneNote\16.0\Exported\{11BD3AE3-FE9A-446F-A827-C870DF0A2283}\NT\0\output1.js"2⤵
- Process spawned unexpected child process
- Blocklisted process makes network request
- Suspicious use of WriteProcessMemory
PID:4952 -
C:\Windows\System32\regsvr32.exe"C:\Windows\System32\regsvr32.exe" /s "C:\Users\Admin\AppData\Local\Temp\o9cy1qngv\N4XS0dlF0TC.dll"3⤵
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3836 -
C:\Windows\system32\regsvr32.exeC:\Windows\system32\regsvr32.exe "C:\Windows\system32\HfwiLKSUBlpSZHASf\GAoVlWn.dll"4⤵PID:4228
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
85KB
MD5b85e5767bf5001bd8c48ddad3250d1c0
SHA18e6f41ef924727493587494e0bf5facc9b40bbd0
SHA256b83680379ac89b857c64e28eb7dfdeda7ebc1d83de5a25799926ad3860fdc0fe
SHA512cb66f3441aeef054fda04c8f60d3e5406cde8ac24da81bd601425de5e4e96292cf9d902a9e7d9e23b45fd9d2d6fff4dcfdb2311963b14fb8cb6eb49a4dee0bc7
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Filesize
116KB
MD5ad0358aa96105ca02607a7605f3a1e80
SHA1d64a68d180d675170062ce13014a479ebe1de5d8
SHA256d8cca538ecd91252ed5294bd8bbbb5772245e8b1315fd9723e1f08ee4ef6958d
SHA5125fe4924d1dd39cde2899e8937d8271c3f9394d4a149818d6e1e4fc83b35b30c810fe6b68dfcdd49a77d0cb9de1b996903213b92bbba64ecde8bc9341f55a5342
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Filesize
41KB
MD51beb6cb6862e215a84ee058f430b8036
SHA114562b101e8b0d1826da79bffb88633154c304b7
SHA25631e98a8bfc9d5317f3f3fecd28d23b707756d3c3f106b41ba0570e31920ebc8a
SHA512ef09ffd7ccb1c8a6a033358cfa40c65ba39a5c4c9d987792555e9956301763ab9382a0024070c4dd5f5e96bde8f10231a78a36fb697509cff2380028f4eacd7c
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C:\Users\Admin\AppData\Local\Temp\OneNote\16.0\Exported\{11BD3AE3-FE9A-446F-A827-C870DF0A2283}\NT\0\output1.js
Filesize116KB
MD5ad0358aa96105ca02607a7605f3a1e80
SHA1d64a68d180d675170062ce13014a479ebe1de5d8
SHA256d8cca538ecd91252ed5294bd8bbbb5772245e8b1315fd9723e1f08ee4ef6958d
SHA5125fe4924d1dd39cde2899e8937d8271c3f9394d4a149818d6e1e4fc83b35b30c810fe6b68dfcdd49a77d0cb9de1b996903213b92bbba64ecde8bc9341f55a5342
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Filesize
946KB
MD554c20e24d83af81e96896f894c44bedb
SHA1d7f7c581ccde8df1a4ffa40bba0133299dd1b290
SHA25692eb687dded3bd30bf4b7659c6d565db666a3ca6a06e96e4b3389bed65a13235
SHA512c4389b7cd8ebbfe3fd20996ee36cec13a3bedae01aae07d077825f8f76e72aaa3c9c7932d77096cb51a36bbe5f92a6748cf4a7559309793b01cfb3065a372910
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Filesize
506.9MB
MD57f4fbb91a13198513f3822184e1d6411
SHA1cab313315be6d468f294307ddc0c5caa061da472
SHA2565e08c8a15a3efb4f4ed030c47e98d0436a3facb24b1b81e1c7d6fc4ce0d91065
SHA5126f43212a4f7f118ddeed82b5c958af509da5c6ec3f6257cdda209db773e9367046939b5ff643242ca729cd60d4a3f73c14304c63ee1db47881123f21a0a3d9b4
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Filesize
708B
MD525cc34afeb6ebbe685bb3d34ecf0ed03
SHA156e158953158721f21a70a523f3364e8989c10ac
SHA2564c25aec7c690c54344e24261ea3e716d475537c3266e3859ca459dc68d7c905d
SHA512efd6761d19db66855139912f3d29db8927035ad7e4ae4904a47748a52c5dfcc21b2cc77beed4befbeb67b1d085791cb3457a8c5bb8f94cc4ce015f09fb3a4134
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Filesize
506.9MB
MD57f4fbb91a13198513f3822184e1d6411
SHA1cab313315be6d468f294307ddc0c5caa061da472
SHA2565e08c8a15a3efb4f4ed030c47e98d0436a3facb24b1b81e1c7d6fc4ce0d91065
SHA5126f43212a4f7f118ddeed82b5c958af509da5c6ec3f6257cdda209db773e9367046939b5ff643242ca729cd60d4a3f73c14304c63ee1db47881123f21a0a3d9b4