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Analysis
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max time kernel
120s -
max time network
124s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
17/04/2024, 04:20
Static task
static1
Behavioral task
behavioral1
Sample
2024-04-17_f3a5842ccd2cb2e9f2dd7d72e30af464_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-04-17_f3a5842ccd2cb2e9f2dd7d72e30af464_cryptolocker.exe
Resource
win10v2004-20240412-en
General
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Target
2024-04-17_f3a5842ccd2cb2e9f2dd7d72e30af464_cryptolocker.exe
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Size
62KB
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MD5
f3a5842ccd2cb2e9f2dd7d72e30af464
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SHA1
76933969edc320155db6a22720ebd9c60acc48a9
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SHA256
73a7006671e8d40f2fbc99536392c5a7dc9a2f736d197f6adbe1396dcf52bd70
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SHA512
e3cd29613974de2ba98dd23aa97a06119268b142ecfe27e66e356478647079915061e731287d5442aa72bc6de9d8a5f9ccae44fdeb7c4e72558a117e55be2d25
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SSDEEP
1536:btB9g/xtCSKfxLIc//Xr+/AO/kIZ3ft2nVuTKB6nggOlHdUHaxJ:btng54SMLr+/AO/kIhfoKMHdPJ
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral1/files/0x000900000001223d-10.dat CryptoLocker_rule2 -
Executes dropped EXE 1 IoCs
pid Process 2300 gewos.exe -
Loads dropped DLL 1 IoCs
pid Process 2292 2024-04-17_f3a5842ccd2cb2e9f2dd7d72e30af464_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 2292 2024-04-17_f3a5842ccd2cb2e9f2dd7d72e30af464_cryptolocker.exe 2300 gewos.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 2292 wrote to memory of 2300 2292 2024-04-17_f3a5842ccd2cb2e9f2dd7d72e30af464_cryptolocker.exe 28 PID 2292 wrote to memory of 2300 2292 2024-04-17_f3a5842ccd2cb2e9f2dd7d72e30af464_cryptolocker.exe 28 PID 2292 wrote to memory of 2300 2292 2024-04-17_f3a5842ccd2cb2e9f2dd7d72e30af464_cryptolocker.exe 28 PID 2292 wrote to memory of 2300 2292 2024-04-17_f3a5842ccd2cb2e9f2dd7d72e30af464_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-04-17_f3a5842ccd2cb2e9f2dd7d72e30af464_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-04-17_f3a5842ccd2cb2e9f2dd7d72e30af464_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2292 -
C:\Users\Admin\AppData\Local\Temp\gewos.exe"C:\Users\Admin\AppData\Local\Temp\gewos.exe"2⤵
- Executes dropped EXE
- Suspicious use of UnmapMainImage
PID:2300
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
63KB
MD58fa10beb5d2993c38a548313856b79f7
SHA1959c65f4878d055a96a1810b354abaca4a9d9f97
SHA256d896bba0da597749502bf8644105ed8b36547e990b92c1ae5ccfeba70a6be0f7
SHA512d799348a9f70048608c95314c0985b65138344040e77914325fd37b5cde09efad5d158797ec7895b8fbde405b4fe1af5d95047b2fdbb9040ba2262e952dc384a