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Analysis
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max time kernel
148s -
max time network
156s -
platform
windows10-2004_x64 -
resource
win10v2004-20240221-en -
resource tags
arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system -
submitted
24/02/2024, 08:43
Static task
static1
Behavioral task
behavioral1
Sample
2024-02-24_5f0de26233ce5e3ca3a99f24e5d21e27_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-02-24_5f0de26233ce5e3ca3a99f24e5d21e27_cryptolocker.exe
Resource
win10v2004-20240221-en
General
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Target
2024-02-24_5f0de26233ce5e3ca3a99f24e5d21e27_cryptolocker.exe
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Size
124KB
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MD5
5f0de26233ce5e3ca3a99f24e5d21e27
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SHA1
0d7f62d4ded65db2fceb0e378829e80df91ae029
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SHA256
96313951bec6321631e8ecc17435adc0de7848dfadab3ae351b8dceb04f2f35f
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SHA512
0bf7e963bdd82685d5f30297066842a7ca0881d49c2b403225ee8e3424e9f7588f32fe3a9debadb49a445f762c78ca343893e436fe900cdf640961f014731fe8
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SSDEEP
1536:gUj+AIMOtEvwDpjNbwQEIPlemUhYwkkxE4f:vCA9OtEvwDpjm
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x000b00000001e597-12.dat CryptoLocker_rule2 -
Detection of Cryptolocker Samples 1 IoCs
resource yara_rule behavioral2/files/0x000b00000001e597-12.dat 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-1-5-21-1712835645-2080934712-2142796781-1000\Control Panel\International\Geo\Nation 2024-02-24_5f0de26233ce5e3ca3a99f24e5d21e27_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 4868 misid.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 3556 wrote to memory of 4868 3556 2024-02-24_5f0de26233ce5e3ca3a99f24e5d21e27_cryptolocker.exe 90 PID 3556 wrote to memory of 4868 3556 2024-02-24_5f0de26233ce5e3ca3a99f24e5d21e27_cryptolocker.exe 90 PID 3556 wrote to memory of 4868 3556 2024-02-24_5f0de26233ce5e3ca3a99f24e5d21e27_cryptolocker.exe 90
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-02-24_5f0de26233ce5e3ca3a99f24e5d21e27_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-24_5f0de26233ce5e3ca3a99f24e5d21e27_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3556 -
C:\Users\Admin\AppData\Local\Temp\misid.exe"C:\Users\Admin\AppData\Local\Temp\misid.exe"2⤵
- Executes dropped EXE
PID:4868
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
124KB
MD5249f826b243ba2a97d277ae0a2ebe858
SHA1e4d7e9471f251504274c6c541afcc7ec716ffadb
SHA256dfdc242df2c25d80e7bb2035d4c8d81105b60ca1bf90f92fb2e21fa3c7867323
SHA51257bab10541e6d64d412b2136878bdd0a13245631b6ad3b88211ed4f86a92408dd0e27ed09d188bd2434a72e1d09327468722fe0af394f87ad84937145865456d