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Analysis
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max time kernel
148s -
max time network
149s -
platform
windows7_x64 -
resource
win7-20240419-en -
resource tags
arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system -
submitted
31/05/2024, 09:37
Static task
static1
Behavioral task
behavioral1
Sample
2024-05-31_51447b226dfe0dc0c87f956799efb3aa_cryptolocker.exe
Resource
win7-20240419-en
Behavioral task
behavioral2
Sample
2024-05-31_51447b226dfe0dc0c87f956799efb3aa_cryptolocker.exe
Resource
win10v2004-20240426-en
General
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Target
2024-05-31_51447b226dfe0dc0c87f956799efb3aa_cryptolocker.exe
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Size
45KB
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MD5
51447b226dfe0dc0c87f956799efb3aa
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SHA1
9dd3af0cf7e5319c51ab1e92433d9893f0d73742
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SHA256
fcb02cd409a98138868a350bfb05f3ce259b7c11888a651d9360d837459f58ca
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SHA512
c00f177ffefafc1672939614d63c6df06324c3c8ea03ed3dea3234c418c4054196be1e874090781968d50744ab480868bf52f351dffd7458c2ac87dad603419b
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SSDEEP
768:b7o/2n1TCraU6GD1a4X0WcO+wMVm+slAMphqK:bc/y2lkF0+BeqK
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral1/files/0x000c000000012279-10.dat CryptoLocker_rule2 -
Executes dropped EXE 1 IoCs
pid Process 2684 rewok.exe -
Loads dropped DLL 1 IoCs
pid Process 1704 2024-05-31_51447b226dfe0dc0c87f956799efb3aa_cryptolocker.exe -
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 1704 2024-05-31_51447b226dfe0dc0c87f956799efb3aa_cryptolocker.exe 2684 rewok.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 1704 wrote to memory of 2684 1704 2024-05-31_51447b226dfe0dc0c87f956799efb3aa_cryptolocker.exe 28 PID 1704 wrote to memory of 2684 1704 2024-05-31_51447b226dfe0dc0c87f956799efb3aa_cryptolocker.exe 28 PID 1704 wrote to memory of 2684 1704 2024-05-31_51447b226dfe0dc0c87f956799efb3aa_cryptolocker.exe 28 PID 1704 wrote to memory of 2684 1704 2024-05-31_51447b226dfe0dc0c87f956799efb3aa_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-31_51447b226dfe0dc0c87f956799efb3aa_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-31_51447b226dfe0dc0c87f956799efb3aa_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1704 -
C:\Users\Admin\AppData\Local\Temp\rewok.exe"C:\Users\Admin\AppData\Local\Temp\rewok.exe"2⤵
- Executes dropped EXE
- Suspicious use of UnmapMainImage
PID:2684
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
46KB
MD59b696e4eef9923724f061cccb6eee3bd
SHA16b219223cc5a73389ef50c6ec77959bce5402818
SHA256371672d4408db3d29137a48fc048370b4f861ba3f12612e07527640b8ae2545f
SHA51288f353497190ce75b20d7050d9963a4a462c3261134b3aaa7815ea74b0c94ebaf40eeca5062c49d2269524d232bb452658e7c634e14e2d1d099d33e19a93ab97