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Analysis
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max time kernel
10s -
max time network
150s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
17/05/2024, 03:41
Static task
static1
Behavioral task
behavioral1
Sample
2024-05-17_9c10d97613308234588b7367e80d2a18_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-05-17_9c10d97613308234588b7367e80d2a18_cryptolocker.exe
Resource
win10v2004-20240508-en
General
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Target
2024-05-17_9c10d97613308234588b7367e80d2a18_cryptolocker.exe
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Size
33KB
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MD5
9c10d97613308234588b7367e80d2a18
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SHA1
197a05ba1dd2024a18d756730af82c3e109ec3fb
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SHA256
aa84331720c4e011dc9264f1ad450b7206c2221f778305a4140d38517a99156d
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SHA512
d775f171e02b1ba412531a8daf520df7d9a714b0ef6a6cad210be61fb9da843b575a269d704bd2969c1afba08efa30e4a3c1dbffe16244f335b858d61656a1d4
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SSDEEP
384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zzzcYgUPSznStEkcsgW:b/yC4GyNM01GuQMNXw2PSjSKkcJW
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral1/files/0x000c00000001565d-10.dat CryptoLocker_rule2 -
Executes dropped EXE 1 IoCs
pid Process 2224 retln.exe -
Loads dropped DLL 1 IoCs
pid Process 3028 2024-05-17_9c10d97613308234588b7367e80d2a18_cryptolocker.exe -
Creates a large amount of network flows 1 TTPs
This may indicate a network scan to discover remotely running services.
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious use of UnmapMainImage 2 IoCs
pid Process 3028 2024-05-17_9c10d97613308234588b7367e80d2a18_cryptolocker.exe 2224 retln.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 3028 wrote to memory of 2224 3028 2024-05-17_9c10d97613308234588b7367e80d2a18_cryptolocker.exe 28 PID 3028 wrote to memory of 2224 3028 2024-05-17_9c10d97613308234588b7367e80d2a18_cryptolocker.exe 28 PID 3028 wrote to memory of 2224 3028 2024-05-17_9c10d97613308234588b7367e80d2a18_cryptolocker.exe 28 PID 3028 wrote to memory of 2224 3028 2024-05-17_9c10d97613308234588b7367e80d2a18_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-17_9c10d97613308234588b7367e80d2a18_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-17_9c10d97613308234588b7367e80d2a18_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:3028 -
C:\Users\Admin\AppData\Local\Temp\retln.exe"C:\Users\Admin\AppData\Local\Temp\retln.exe"2⤵
- Executes dropped EXE
- Suspicious use of UnmapMainImage
PID:2224
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
33KB
MD54449b52c90fcf2a0510a9e72315dcabf
SHA10f0370f4ca8e09d284e84491ac319d2b69b79d9d
SHA256894bdb55228f8ae687f2deaf130c4eaf3497346572afcaf888ffe8ea5fa1a8de
SHA51280ad16626d2c3d0984adafa7241042ba0218c4bdc535565c00b16ad6676f39582e519de2079745c36792db8cbad0a5b4f72e5bef62d17a4ac3fc0b77a43e024c