Analysis
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max time kernel
21s -
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
10/06/2024, 06:25
Static task
static1
Behavioral task
behavioral1
Sample
2024-06-10_c70ac706b4157167d03227532fc5a71e_cryptolocker.exe
Resource
win7-20240215-en
Behavioral task
behavioral2
Sample
2024-06-10_c70ac706b4157167d03227532fc5a71e_cryptolocker.exe
Resource
win10v2004-20240226-en
General
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Target
2024-06-10_c70ac706b4157167d03227532fc5a71e_cryptolocker.exe
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Size
31KB
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MD5
c70ac706b4157167d03227532fc5a71e
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SHA1
e24fd5b88d43fe859e515f899889d9261d1fa1c2
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SHA256
7f8297a5240f75cc7cdbade449f70fa495ab5355c75c2df9f1fe1dcaf57ac95a
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SHA512
0a9478ba7eda3c3ac8129193cfa440a347b502a2ae7c0ccce83c54bdd14128b3190b4abf77753d35fa28f375c5c55b7da30b264111b5d05ca5ec372e4e25f9ce
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SSDEEP
384:bAvMaNGh4z7CG3POOvbRSLoF/F0QU5XYFnufc/zzo6cJ3vdU:bAvJCYOOvbRPDEgXRcJC
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x0009000000023248-12.dat CryptoLocker_rule2 -
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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation 2024-06-10_c70ac706b4157167d03227532fc5a71e_cryptolocker.exe Key value queried \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation demka.exe -
Executes dropped EXE 1 IoCs
pid Process 1720 demka.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 452 wrote to memory of 1720 452 2024-06-10_c70ac706b4157167d03227532fc5a71e_cryptolocker.exe 91 PID 452 wrote to memory of 1720 452 2024-06-10_c70ac706b4157167d03227532fc5a71e_cryptolocker.exe 91 PID 452 wrote to memory of 1720 452 2024-06-10_c70ac706b4157167d03227532fc5a71e_cryptolocker.exe 91
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-06-10_c70ac706b4157167d03227532fc5a71e_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-10_c70ac706b4157167d03227532fc5a71e_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:452 -
C:\Users\Admin\AppData\Local\Temp\demka.exe"C:\Users\Admin\AppData\Local\Temp\demka.exe"2⤵
- Checks computer location settings
- Executes dropped EXE
PID:1720
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4136 --field-trial-handle=2744,i,16362475727591565961,3676688664819797550,262144 --variations-seed-version /prefetch:81⤵PID:532
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
31KB
MD53424207893b64a11f8bcb4538a86477d
SHA1e5833fdc92822500598f2a1b596cdf21a7ba9dc0
SHA2561830c36acd4a2425c92b3b133bed7c3d5990d87c0f1e9bf1fde19a9bec7bdc85
SHA51287918f07baebd97ab1a6d9fc75ed80a5e93535ec23155809cf6ae106ad0b87ac0eba5b6b283c80a5a0cc5d450abae8bffbb0acd3f1e866fb5eb12dfbccf06f40
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Filesize
186B
MD516cdf4d2a37b9fbcb247c515277c4915
SHA151532c70c8fb7b87ec740a5241b3ccd243ec466d
SHA25653b33e8fded234c01d97ba1cd36b99baa4da06237249727be1caf37bd2776d4e
SHA512e3c065408fba9aa45441af570206ebbc6d7644ef7788608ee36e2919f2124e67696aa3a59f51689646b0fe0758919d9bc278b90137f21bbc2fbb9e82b57bc257