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Analysis
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max time kernel
132s -
max time network
140s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
23/04/2024, 07:31
Static task
static1
Behavioral task
behavioral1
Sample
2024-04-23_4546a0ea205dd30b184d0da986d0ca76_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-04-23_4546a0ea205dd30b184d0da986d0ca76_cryptolocker.exe
Resource
win10v2004-20240412-en
General
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Target
2024-04-23_4546a0ea205dd30b184d0da986d0ca76_cryptolocker.exe
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Size
43KB
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MD5
4546a0ea205dd30b184d0da986d0ca76
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SHA1
83bde00c12d292c75176fc3bf188aa48ec2fd788
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SHA256
6d2b2d8428cedb1220c36cec55c778a033db0563a289783a01af917e32b93b9e
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SHA512
970c51e1d213f604f4c12f743f4a5f6793d7334e97015b198d348588f93fee8563e119b98e7283939f75ab3f8780bf889d519a8c99f6d08c872dd9e3c918a1b9
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SSDEEP
768:b7o/2n1TCraU6GD1a4X0WcO+wMVm+slAMphqM:bc/y2lkF0+BeqM
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral1/files/0x000a00000001224e-10.dat CryptoLocker_rule2 -
Executes dropped EXE 1 IoCs
pid Process 1816 rewok.exe -
Loads dropped DLL 1 IoCs
pid Process 3008 2024-04-23_4546a0ea205dd30b184d0da986d0ca76_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 3008 2024-04-23_4546a0ea205dd30b184d0da986d0ca76_cryptolocker.exe 1816 rewok.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 3008 wrote to memory of 1816 3008 2024-04-23_4546a0ea205dd30b184d0da986d0ca76_cryptolocker.exe 28 PID 3008 wrote to memory of 1816 3008 2024-04-23_4546a0ea205dd30b184d0da986d0ca76_cryptolocker.exe 28 PID 3008 wrote to memory of 1816 3008 2024-04-23_4546a0ea205dd30b184d0da986d0ca76_cryptolocker.exe 28 PID 3008 wrote to memory of 1816 3008 2024-04-23_4546a0ea205dd30b184d0da986d0ca76_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-04-23_4546a0ea205dd30b184d0da986d0ca76_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-04-23_4546a0ea205dd30b184d0da986d0ca76_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:3008 -
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:1816
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
43KB
MD5da6e801cf9b5509079a16c45fa454b6c
SHA188d79faacdaa7a99556feea882fca7809d0ce4de
SHA25630b4376d5b6649c6784dfddc55f97703592404894a4c71d8d0c345f71ba37bb7
SHA512235f4d53b6b8409bf55db839dd30b5a6c38dc7e87f8e0cf2745031a9f7950326798ee657d702be11902a0f8bd265e0381da2125cb474bab483323122765f2d5a