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Analysis
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max time kernel
148s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
29/03/2024, 02:53
Static task
static1
Behavioral task
behavioral1
Sample
2024-03-29_5659cb1d8d263a7bcabc9b5a2cc33067_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-03-29_5659cb1d8d263a7bcabc9b5a2cc33067_cryptolocker.exe
Resource
win10v2004-20240226-en
General
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Target
2024-03-29_5659cb1d8d263a7bcabc9b5a2cc33067_cryptolocker.exe
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Size
45KB
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MD5
5659cb1d8d263a7bcabc9b5a2cc33067
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SHA1
196ef36d163d2db36e2051124fc0e6a96ff53e91
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SHA256
823397b7d4dc5f1d3c7a083b681251b66fe45c17b656e8e109b69c40ed894985
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SHA512
3166a44a2a5ddcb93c33d34d36b182a614dc28d5edb744f6499067f7dd12f77e0fc757214f0dfc27f4f4639fdbc1d78d55e0ba38bb8566a9a6a71d1a9dc00468
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SSDEEP
768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6j4AYsqSh+DETkedmhXSJJL:YGzl5wjRQBBOsP1QMOtEvwDpjl39+D+9
Malware Config
Signatures
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Detection of CryptoLocker Variants 3 IoCs
resource yara_rule behavioral2/memory/2152-0-0x0000000000500000-0x000000000050B000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000800000002321d-13.dat CryptoLocker_rule2 behavioral2/memory/2152-17-0x0000000000500000-0x000000000050B000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 3 IoCs
resource yara_rule behavioral2/memory/2152-0-0x0000000000500000-0x000000000050B000-memory.dmp CryptoLocker_set1 behavioral2/files/0x000800000002321d-13.dat CryptoLocker_set1 behavioral2/memory/2152-17-0x0000000000500000-0x000000000050B000-memory.dmp CryptoLocker_set1 -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\Control Panel\International\Geo\Nation 2024-03-29_5659cb1d8d263a7bcabc9b5a2cc33067_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 2940 asih.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 2152 wrote to memory of 2940 2152 2024-03-29_5659cb1d8d263a7bcabc9b5a2cc33067_cryptolocker.exe 87 PID 2152 wrote to memory of 2940 2152 2024-03-29_5659cb1d8d263a7bcabc9b5a2cc33067_cryptolocker.exe 87 PID 2152 wrote to memory of 2940 2152 2024-03-29_5659cb1d8d263a7bcabc9b5a2cc33067_cryptolocker.exe 87
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-03-29_5659cb1d8d263a7bcabc9b5a2cc33067_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-03-29_5659cb1d8d263a7bcabc9b5a2cc33067_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2152 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2940
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
45KB
MD5e37a566b226a9fd1578b12df8298fc9d
SHA172afef673bc1de39663ced7bd9e2b5478ade929e
SHA256068526c9b1b992dc606105b0b44a48919391b1d66a8bd585a436257fa14037e2
SHA5125710670c9ec86d9956c469ee8f74fa761824c3fa2c550a18305cf0f079cf3fe7226a7168a4825b88f93a01adcbbd063d61743a0239bd0991b90bca47d3bcb1d4