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Analysis
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max time kernel
149s -
max time network
152s -
platform
windows10-2004_x64 -
resource
win10v2004-20230703-en -
resource tags
arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system -
submitted
06/08/2023, 18:14
Behavioral task
behavioral1
Sample
905c2aefd17ab5dbc49974738ab36788_cryptolocker_JC.exe
Resource
win7-20230712-en
Behavioral task
behavioral2
Sample
905c2aefd17ab5dbc49974738ab36788_cryptolocker_JC.exe
Resource
win10v2004-20230703-en
General
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Target
905c2aefd17ab5dbc49974738ab36788_cryptolocker_JC.exe
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Size
76KB
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MD5
905c2aefd17ab5dbc49974738ab36788
-
SHA1
b2a074e10db3ad461755cabec46e5b31e426ff23
-
SHA256
c8ba0071df16f7ec9b5c5310753d2b33179e7f9298f1faf5331723a9c12187e7
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SHA512
800c266914648aacff58fb8785c305dbe3ead5243e0bfcc26089bc34fb2c6b476ecadda1f49f37ce56ef0e1e2182f8fffaec662260ad7274bc8d6776a2045d0b
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SSDEEP
1536:P8mnK6QFElP6n+gymddpMOtEvwDpjIHsalDSnUE:1nK6a+qdOOtEvwDpjP
Malware Config
Signatures
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Executes dropped EXE 1 IoCs
pid Process 2776 asih.exe -
resource yara_rule behavioral2/memory/744-133-0x0000000000500000-0x000000000050F311-memory.dmp upx behavioral2/files/0x0007000000023200-146.dat upx behavioral2/files/0x0007000000023200-148.dat upx behavioral2/files/0x0007000000023200-149.dat upx behavioral2/memory/744-150-0x0000000000500000-0x000000000050F311-memory.dmp upx behavioral2/memory/2776-159-0x0000000000500000-0x000000000050F311-memory.dmp upx -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 744 wrote to memory of 2776 744 905c2aefd17ab5dbc49974738ab36788_cryptolocker_JC.exe 80 PID 744 wrote to memory of 2776 744 905c2aefd17ab5dbc49974738ab36788_cryptolocker_JC.exe 80 PID 744 wrote to memory of 2776 744 905c2aefd17ab5dbc49974738ab36788_cryptolocker_JC.exe 80
Processes
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C:\Users\Admin\AppData\Local\Temp\905c2aefd17ab5dbc49974738ab36788_cryptolocker_JC.exe"C:\Users\Admin\AppData\Local\Temp\905c2aefd17ab5dbc49974738ab36788_cryptolocker_JC.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:744 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2776
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
-
Filesize
76KB
MD5501626c62005a61aa28ab744600e3b89
SHA16de98f93791f3daa908d570456ce5a7707194cf3
SHA2567d52f4a6abaa903bfba70911a479fbefb167068e5ac4ab8c9deb6d970f49b747
SHA5121a93feba9056399b8429224d901337f0b2d85f03f9fc938015e51ce992f60631dfd7a92499f917d7eb2efb452c2c4a76044b693731fbd20855665c343e01e1cc
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Filesize
76KB
MD5501626c62005a61aa28ab744600e3b89
SHA16de98f93791f3daa908d570456ce5a7707194cf3
SHA2567d52f4a6abaa903bfba70911a479fbefb167068e5ac4ab8c9deb6d970f49b747
SHA5121a93feba9056399b8429224d901337f0b2d85f03f9fc938015e51ce992f60631dfd7a92499f917d7eb2efb452c2c4a76044b693731fbd20855665c343e01e1cc
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Filesize
76KB
MD5501626c62005a61aa28ab744600e3b89
SHA16de98f93791f3daa908d570456ce5a7707194cf3
SHA2567d52f4a6abaa903bfba70911a479fbefb167068e5ac4ab8c9deb6d970f49b747
SHA5121a93feba9056399b8429224d901337f0b2d85f03f9fc938015e51ce992f60631dfd7a92499f917d7eb2efb452c2c4a76044b693731fbd20855665c343e01e1cc