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Analysis
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max time kernel
149s -
max time network
149s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
09/05/2024, 18:44
Static task
static1
Behavioral task
behavioral1
Sample
2024-05-09_3fab226e2695d745a4c7b2606eff16e8_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-05-09_3fab226e2695d745a4c7b2606eff16e8_cryptolocker.exe
Resource
win10v2004-20240426-en
General
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Target
2024-05-09_3fab226e2695d745a4c7b2606eff16e8_cryptolocker.exe
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Size
42KB
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MD5
3fab226e2695d745a4c7b2606eff16e8
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SHA1
fb69460381e3c1995aa971cf715a46580493004b
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SHA256
5465b5102fe150c2295e1b71b0cf9bd95b7abe7c81e3a153655ab3d6e8a3679a
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SHA512
74970c2167e02d502e4a81489c3f8f02a43059a3174ea3bceaf3d7941f7e2aa74f2433ceabc97e3d5aa38e476d7e52a42e1610fb48b3659326cc06f346cc955f
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SSDEEP
768:bCDOw9UiaKHfjnD0S16avdrQFiLjJvtAydI:bCDOw9aMDooc+vAym
Malware Config
Signatures
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Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral1/memory/1924-0-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000b000000015bb9-11.dat CryptoLocker_rule2 behavioral1/memory/1924-15-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral1/memory/1648-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 -
Executes dropped EXE 1 IoCs
pid Process 1648 lossy.exe -
Loads dropped DLL 1 IoCs
pid Process 1924 2024-05-09_3fab226e2695d745a4c7b2606eff16e8_cryptolocker.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 1924 wrote to memory of 1648 1924 2024-05-09_3fab226e2695d745a4c7b2606eff16e8_cryptolocker.exe 28 PID 1924 wrote to memory of 1648 1924 2024-05-09_3fab226e2695d745a4c7b2606eff16e8_cryptolocker.exe 28 PID 1924 wrote to memory of 1648 1924 2024-05-09_3fab226e2695d745a4c7b2606eff16e8_cryptolocker.exe 28 PID 1924 wrote to memory of 1648 1924 2024-05-09_3fab226e2695d745a4c7b2606eff16e8_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-09_3fab226e2695d745a4c7b2606eff16e8_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-09_3fab226e2695d745a4c7b2606eff16e8_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1924 -
C:\Users\Admin\AppData\Local\Temp\lossy.exe"C:\Users\Admin\AppData\Local\Temp\lossy.exe"2⤵
- Executes dropped EXE
PID:1648
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
43KB
MD584786bf6ee597a31fd8a9db1ab7c772d
SHA186cf50062a5a1d459f68254219233451a477b0a4
SHA256456384ecb38e0725131d89ea9fee51ab31d9e54cf6cb7173fb1c17114b59063f
SHA512b6f89ed7039c8c8d9dd1d799815a63c161d6cfa34f42f4ca7ff0cea74748f5dc0f9ed8bb44dc7e39dfd4365e2169adbfaa4e1099ebe7819a2a7babd20316fe98