Analysis
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max time kernel
150s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
11/06/2024, 02:28
Static task
static1
Behavioral task
behavioral1
Sample
2024-06-11_5197f2b53d09189e27b01f914539f07b_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-06-11_5197f2b53d09189e27b01f914539f07b_cryptolocker.exe
Resource
win10v2004-20240508-en
General
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Target
2024-06-11_5197f2b53d09189e27b01f914539f07b_cryptolocker.exe
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Size
43KB
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MD5
5197f2b53d09189e27b01f914539f07b
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SHA1
b7629135bf81e2b50716f3809592990ce83a67d9
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SHA256
4fe4549b3947338a34c2f787e819a28c273c9d99aa1d3978a21b18c553387b34
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SHA512
ab9532d5ff18bb30753773c4770d36a79d79a71d8fedc194bf8b4d53b50e51ecaa84b903a6e31a9d7f8cfa8204cbcd3b51956cbd92477a7322ffb6eb7adbabb7
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SSDEEP
768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqh6/aDDRJ:6j+1NMOtEvwDpjrRsJ
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral2/memory/3200-0-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x0005000000022975-13.dat CryptoLocker_rule2 behavioral2/memory/3056-18-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral2/memory/3200-17-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral2/memory/3056-27-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 5 IoCs
resource yara_rule behavioral2/memory/3200-0-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral2/files/0x0005000000022975-13.dat CryptoLocker_set1 behavioral2/memory/3056-18-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral2/memory/3200-17-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral2/memory/3056-27-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 -
Detects executables built or packed with MPress PE compressor 5 IoCs
resource yara_rule behavioral2/memory/3200-0-0x0000000000500000-0x000000000050F000-memory.dmp INDICATOR_EXE_Packed_MPress behavioral2/files/0x0005000000022975-13.dat INDICATOR_EXE_Packed_MPress behavioral2/memory/3056-18-0x0000000000500000-0x000000000050F000-memory.dmp INDICATOR_EXE_Packed_MPress behavioral2/memory/3200-17-0x0000000000500000-0x000000000050F000-memory.dmp INDICATOR_EXE_Packed_MPress behavioral2/memory/3056-27-0x0000000000500000-0x000000000050F000-memory.dmp INDICATOR_EXE_Packed_MPress -
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-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation 2024-06-11_5197f2b53d09189e27b01f914539f07b_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 3056 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 3200 wrote to memory of 3056 3200 2024-06-11_5197f2b53d09189e27b01f914539f07b_cryptolocker.exe 90 PID 3200 wrote to memory of 3056 3200 2024-06-11_5197f2b53d09189e27b01f914539f07b_cryptolocker.exe 90 PID 3200 wrote to memory of 3056 3200 2024-06-11_5197f2b53d09189e27b01f914539f07b_cryptolocker.exe 90
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-06-11_5197f2b53d09189e27b01f914539f07b_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-11_5197f2b53d09189e27b01f914539f07b_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3200 -
C:\Users\Admin\AppData\Local\Temp\misid.exe"C:\Users\Admin\AppData\Local\Temp\misid.exe"2⤵
- Executes dropped EXE
PID:3056
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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 --field-trial-handle=4584,i,17096020621006928097,15544233752327415349,262144 --variations-seed-version --mojo-platform-channel-handle=4360 /prefetch:81⤵PID:1776
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
43KB
MD55152e81cee8681927ae10aabe7d9f548
SHA19139b43f8e3fbd5bef3c634859c90956fa93a96d
SHA2567b88eaea8a8d2c8f7768f8dee074fafb2cf263ad519b936e053bec0d3d9552cd
SHA512322a6dab5836255ecbc93d3d4bb2366737fe0a1f6f7fb0d1764607aeea04884886b3e7c47fa3a7bd7959c465d119d66e9ec858322bba79e3110c533f7f4c80b4