Analysis
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max time kernel
60s -
max time network
63s -
platform
windows10_x64 -
resource
win10v20201028 -
submitted
18-03-2021 01:12
Behavioral task
behavioral1
Sample
fe997a590a68d98f95ac0b6c994ba69c3b2ece9841277b7fecd9dfaa6f589a87.exe
Resource
win7v20201028
Behavioral task
behavioral2
Sample
fe997a590a68d98f95ac0b6c994ba69c3b2ece9841277b7fecd9dfaa6f589a87.exe
Resource
win10v20201028
General
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Target
fe997a590a68d98f95ac0b6c994ba69c3b2ece9841277b7fecd9dfaa6f589a87.exe
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Size
1.9MB
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MD5
9fa1ba3e7d6e32f240c790753cdaaf8e
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SHA1
7bcea3fbfcb4c170c57c9050499e1fae40f5d731
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SHA256
fe997a590a68d98f95ac0b6c994ba69c3b2ece9841277b7fecd9dfaa6f589a87
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SHA512
8d2fb58cb8776ead15f445671431eae13a00b48921e545c7ecbf91829015d818d663d9369f181de669ebb771b113c2f675c3a156fac5ede019b5fad9cb8c65fe
Malware Config
Extracted
C:\HOW-TO-DECRYPT-gn9cj.txt
Signatures
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Processes:
resource yara_rule C:\Users\Admin\AppData\Roaming\SetupOem\Alg cryptone C:\Users\Admin\AppData\Roaming\SetupOem\Alg cryptone -
Executes dropped EXE 1 IoCs
Processes:
Algpid process 2016 Alg -
Modifies extensions of user files 6 IoCs
Ransomware generally changes the extension on encrypted files.
Processes:
Algdescription ioc process File opened for modification C:\Users\Admin\Pictures\PublishStart.png.gn9cj Alg File renamed C:\Users\Admin\Pictures\StepImport.tif => C:\Users\Admin\Pictures\StepImport.tif.gn9cj Alg File opened for modification C:\Users\Admin\Pictures\StepImport.tif.gn9cj Alg File renamed C:\Users\Admin\Pictures\InitializeBlock.crw => C:\Users\Admin\Pictures\InitializeBlock.crw.gn9cj Alg File opened for modification C:\Users\Admin\Pictures\InitializeBlock.crw.gn9cj Alg File renamed C:\Users\Admin\Pictures\PublishStart.png => C:\Users\Admin\Pictures\PublishStart.png.gn9cj Alg -
Suspicious use of WriteProcessMemory 14 IoCs
Processes:
fe997a590a68d98f95ac0b6c994ba69c3b2ece9841277b7fecd9dfaa6f589a87.exeAlgcmd.execmd.exedescription pid process target process PID 1052 wrote to memory of 2016 1052 fe997a590a68d98f95ac0b6c994ba69c3b2ece9841277b7fecd9dfaa6f589a87.exe Alg PID 1052 wrote to memory of 2016 1052 fe997a590a68d98f95ac0b6c994ba69c3b2ece9841277b7fecd9dfaa6f589a87.exe Alg PID 2016 wrote to memory of 2768 2016 Alg cmd.exe PID 2016 wrote to memory of 2768 2016 Alg cmd.exe PID 1052 wrote to memory of 3404 1052 fe997a590a68d98f95ac0b6c994ba69c3b2ece9841277b7fecd9dfaa6f589a87.exe cmd.exe PID 1052 wrote to memory of 3404 1052 fe997a590a68d98f95ac0b6c994ba69c3b2ece9841277b7fecd9dfaa6f589a87.exe cmd.exe PID 2768 wrote to memory of 3108 2768 cmd.exe waitfor.exe PID 2768 wrote to memory of 3108 2768 cmd.exe waitfor.exe PID 3404 wrote to memory of 1176 3404 cmd.exe waitfor.exe PID 3404 wrote to memory of 1176 3404 cmd.exe waitfor.exe PID 3404 wrote to memory of 3984 3404 cmd.exe attrib.exe PID 3404 wrote to memory of 3984 3404 cmd.exe attrib.exe PID 2768 wrote to memory of 508 2768 cmd.exe attrib.exe PID 2768 wrote to memory of 508 2768 cmd.exe attrib.exe -
Views/modifies file attributes 1 TTPs 2 IoCs
Processes:
attrib.exeattrib.exepid process 3984 attrib.exe 508 attrib.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\fe997a590a68d98f95ac0b6c994ba69c3b2ece9841277b7fecd9dfaa6f589a87.exe"C:\Users\Admin\AppData\Local\Temp\fe997a590a68d98f95ac0b6c994ba69c3b2ece9841277b7fecd9dfaa6f589a87.exe"1⤵
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Roaming\SetupOem\AlgC:\Users\Admin\AppData\Roaming\SetupOem\Alg /go2⤵
- Executes dropped EXE
- Modifies extensions of user files
- Suspicious use of WriteProcessMemory
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C:\Windows\SYSTEM32\cmd.execmd /c waitfor /t 10 pause /d y & attrib -h "C:\Users\Admin\AppData\Roaming\SetupOem\Alg" & del "C:\Users\Admin\AppData\Roaming\SetupOem\Alg" & rd "C:\Users\Admin\AppData\Roaming\SetupOem\"3⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\waitfor.exewaitfor /t 10 pause /d y4⤵
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C:\Windows\system32\attrib.exeattrib -h "C:\Users\Admin\AppData\Roaming\SetupOem\Alg"4⤵
- Views/modifies file attributes
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C:\Windows\SYSTEM32\cmd.execmd /c waitfor /t 10 pause /d y & attrib -h "C:\Users\Admin\AppData\Local\Temp\fe997a590a68d98f95ac0b6c994ba69c3b2ece9841277b7fecd9dfaa6f589a87.exe" & del "C:\Users\Admin\AppData\Local\Temp\fe997a590a68d98f95ac0b6c994ba69c3b2ece9841277b7fecd9dfaa6f589a87.exe" & rd "C:\Users\Admin\AppData\Local\Temp\"2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\waitfor.exewaitfor /t 10 pause /d y3⤵
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C:\Windows\system32\attrib.exeattrib -h "C:\Users\Admin\AppData\Local\Temp\fe997a590a68d98f95ac0b6c994ba69c3b2ece9841277b7fecd9dfaa6f589a87.exe"3⤵
- Views/modifies file attributes
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Roaming\SetupOem\AlgMD5
9fa1ba3e7d6e32f240c790753cdaaf8e
SHA17bcea3fbfcb4c170c57c9050499e1fae40f5d731
SHA256fe997a590a68d98f95ac0b6c994ba69c3b2ece9841277b7fecd9dfaa6f589a87
SHA5128d2fb58cb8776ead15f445671431eae13a00b48921e545c7ecbf91829015d818d663d9369f181de669ebb771b113c2f675c3a156fac5ede019b5fad9cb8c65fe
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C:\Users\Admin\AppData\Roaming\SetupOem\AlgMD5
9fa1ba3e7d6e32f240c790753cdaaf8e
SHA17bcea3fbfcb4c170c57c9050499e1fae40f5d731
SHA256fe997a590a68d98f95ac0b6c994ba69c3b2ece9841277b7fecd9dfaa6f589a87
SHA5128d2fb58cb8776ead15f445671431eae13a00b48921e545c7ecbf91829015d818d663d9369f181de669ebb771b113c2f675c3a156fac5ede019b5fad9cb8c65fe
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memory/508-12-0x0000000000000000-mapping.dmp
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memory/1052-2-0x0000000002100000-0x00000000022C2000-memory.dmpFilesize
1.8MB
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memory/1176-10-0x0000000000000000-mapping.dmp
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memory/2016-3-0x0000000000000000-mapping.dmp
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memory/2768-7-0x0000000000000000-mapping.dmp
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memory/3108-9-0x0000000000000000-mapping.dmp
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memory/3404-8-0x0000000000000000-mapping.dmp
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memory/3984-11-0x0000000000000000-mapping.dmp