Analysis
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max time kernel
141s -
max time network
124s -
platform
windows10-2004_x64 -
resource
win10v2004-20240412-en -
resource tags
arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system -
submitted
23-04-2024 20:57
Behavioral task
behavioral1
Sample
2024-04-23_c29a7912dd5b408fc36e9465ca052507_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-04-23_c29a7912dd5b408fc36e9465ca052507_cryptolocker.exe
Resource
win10v2004-20240412-en
General
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Target
2024-04-23_c29a7912dd5b408fc36e9465ca052507_cryptolocker.exe
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Size
65KB
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MD5
c29a7912dd5b408fc36e9465ca052507
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SHA1
d35ccf2985408ca7e3e8b469ea9ad166d36c7b94
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SHA256
93d37334135ea55c398b895731ae0f743ec5515c3fab59cffc76d98b73de5f94
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SHA512
30e2f6d9e0fd87fd403c9f1d0e5242c4c473495cd940648c214298fdd8ccace023a1111c34003f4b8dae85ecfb9a7f650fa6bbb85779c9b07b5bb3ecb1ae2a25
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SSDEEP
768:zQz7yVEhs9+syJP6ntOOtEvwDpjFelaB7yBEY9Su8F5mLZ5k5Bj:zj+soPSMOtEvwDpj4kpmeLmQ/j
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral2/memory/1620-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000300000001e97a-13.dat CryptoLocker_rule2 behavioral2/memory/1620-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral2/memory/1268-18-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral2/memory/1268-49-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 5 IoCs
resource yara_rule behavioral2/memory/1620-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral2/files/0x000300000001e97a-13.dat CryptoLocker_set1 behavioral2/memory/1620-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral2/memory/1268-18-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral2/memory/1268-49-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral2/memory/1620-0-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral2/files/0x000300000001e97a-13.dat UPX behavioral2/memory/1620-17-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral2/memory/1268-18-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral2/memory/1268-49-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-2288054676-1871194608-3559553667-1000\Control Panel\International\Geo\Nation 2024-04-23_c29a7912dd5b408fc36e9465ca052507_cryptolocker.exe Key value queried \REGISTRY\USER\S-1-5-21-2288054676-1871194608-3559553667-1000\Control Panel\International\Geo\Nation misid.exe -
Executes dropped EXE 1 IoCs
pid Process 1268 misid.exe -
resource yara_rule behavioral2/memory/1620-0-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral2/files/0x000300000001e97a-13.dat upx behavioral2/memory/1620-17-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral2/memory/1268-18-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral2/memory/1268-49-0x0000000000500000-0x0000000000510000-memory.dmp upx -
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 1620 wrote to memory of 1268 1620 2024-04-23_c29a7912dd5b408fc36e9465ca052507_cryptolocker.exe 86 PID 1620 wrote to memory of 1268 1620 2024-04-23_c29a7912dd5b408fc36e9465ca052507_cryptolocker.exe 86 PID 1620 wrote to memory of 1268 1620 2024-04-23_c29a7912dd5b408fc36e9465ca052507_cryptolocker.exe 86
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-04-23_c29a7912dd5b408fc36e9465ca052507_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-04-23_c29a7912dd5b408fc36e9465ca052507_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1620 -
C:\Users\Admin\AppData\Local\Temp\misid.exe"C:\Users\Admin\AppData\Local\Temp\misid.exe"2⤵
- Checks computer location settings
- Executes dropped EXE
PID:1268
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
65KB
MD51ccdc14b7f6a7f6c709626c867640e46
SHA1635e05609139ad3d10bb9c2927bc92aec2d51fd1
SHA256ed60dd59f084c88941c2909309b35e728c2986feafc11f5cb15fbca645726753
SHA512f06198e6f79a661b2e43342a3a246c60000e8ffa6005898249c11e24e70a495433ea84654075ff3fb35a4bd569beb80045de6a230060ee75b865586980db4fd6
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Filesize
315B
MD5a34ac19f4afae63adc5d2f7bc970c07f
SHA1a82190fc530c265aa40a045c21770d967f4767b8
SHA256d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3
SHA51242e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765