Analysis
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max time kernel
151s -
max time network
155s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
04-03-2024 03:15
Static task
static1
Behavioral task
behavioral1
Sample
a769c781e3748314825f3effbd176b9b.exe
Resource
win7-20240215-en
Behavioral task
behavioral2
Sample
a769c781e3748314825f3effbd176b9b.exe
Resource
win10v2004-20240226-en
General
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Target
a769c781e3748314825f3effbd176b9b.exe
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Size
400KB
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MD5
a769c781e3748314825f3effbd176b9b
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SHA1
23b605d66164573492da31bcdffccc01fd9d3957
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SHA256
7160b2b41f1b7d0b6546663586ad8207c13a5e240d23cbedbfc9ba81ac406d1a
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SHA512
8456c3718f529d17e182b865e8c8fb2c00f43abfaa4eabd024bafa6874ddc90a4eb624229ddbad5e9f0e244ff0de107fbef116038cb72fff13f703b46145c536
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SSDEEP
6144:VWmw0EuCN0pLWgTO3x5N22vWvLRKKAX5l++SybIvCvgCSng:VWkEuCaNT85I2vCMX5l+ZRv9CD
Malware Config
Signatures
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CryptoLocker
Ransomware family with multiple variants.
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Deletes itself 1 IoCs
Processes:
{34184A33-0407-212E-3320-09040709E2C2}.exepid process 224 {34184A33-0407-212E-3320-09040709E2C2}.exe -
Executes dropped EXE 2 IoCs
Processes:
{34184A33-0407-212E-3320-09040709E2C2}.exe{34184A33-0407-212E-3320-09040709E2C2}.exepid process 224 {34184A33-0407-212E-3320-09040709E2C2}.exe 2260 {34184A33-0407-212E-3320-09040709E2C2}.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
{34184A33-0407-212E-3320-09040709E2C2}.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\CryptoLocker = "C:\\Users\\Admin\\AppData\\Roaming\\{34184A33-0407-212E-3320-09040709E2C2}.exe" {34184A33-0407-212E-3320-09040709E2C2}.exe -
Suspicious use of WriteProcessMemory 6 IoCs
Processes:
a769c781e3748314825f3effbd176b9b.exe{34184A33-0407-212E-3320-09040709E2C2}.exedescription pid process target process PID 4784 wrote to memory of 224 4784 a769c781e3748314825f3effbd176b9b.exe {34184A33-0407-212E-3320-09040709E2C2}.exe PID 4784 wrote to memory of 224 4784 a769c781e3748314825f3effbd176b9b.exe {34184A33-0407-212E-3320-09040709E2C2}.exe PID 4784 wrote to memory of 224 4784 a769c781e3748314825f3effbd176b9b.exe {34184A33-0407-212E-3320-09040709E2C2}.exe PID 224 wrote to memory of 2260 224 {34184A33-0407-212E-3320-09040709E2C2}.exe {34184A33-0407-212E-3320-09040709E2C2}.exe PID 224 wrote to memory of 2260 224 {34184A33-0407-212E-3320-09040709E2C2}.exe {34184A33-0407-212E-3320-09040709E2C2}.exe PID 224 wrote to memory of 2260 224 {34184A33-0407-212E-3320-09040709E2C2}.exe {34184A33-0407-212E-3320-09040709E2C2}.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\a769c781e3748314825f3effbd176b9b.exe"C:\Users\Admin\AppData\Local\Temp\a769c781e3748314825f3effbd176b9b.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:4784 -
C:\Users\Admin\AppData\Roaming\{34184A33-0407-212E-3320-09040709E2C2}.exe"C:\Users\Admin\AppData\Roaming\{34184A33-0407-212E-3320-09040709E2C2}.exe" "/rC:\Users\Admin\AppData\Local\Temp\a769c781e3748314825f3effbd176b9b.exe"2⤵
- Deletes itself
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:224 -
C:\Users\Admin\AppData\Roaming\{34184A33-0407-212E-3320-09040709E2C2}.exe"C:\Users\Admin\AppData\Roaming\{34184A33-0407-212E-3320-09040709E2C2}.exe" /w0000021C3⤵
- Executes dropped EXE
PID:2260
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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=3812 --field-trial-handle=2292,i,2103142837140538807,15881446839139365070,262144 --variations-seed-version /prefetch:81⤵PID:3068
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Roaming\{34184A33-0407-212E-3320-09040709E2C2}.exeFilesize
400KB
MD5a769c781e3748314825f3effbd176b9b
SHA123b605d66164573492da31bcdffccc01fd9d3957
SHA2567160b2b41f1b7d0b6546663586ad8207c13a5e240d23cbedbfc9ba81ac406d1a
SHA5128456c3718f529d17e182b865e8c8fb2c00f43abfaa4eabd024bafa6874ddc90a4eb624229ddbad5e9f0e244ff0de107fbef116038cb72fff13f703b46145c536
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C:\Users\Admin\AppData\Roaming\{34184A33-0407-212E-3320-09040709E2C2}.exeFilesize
297KB
MD5541d57cad6a6c022944b6b2f5aa37d96
SHA1de207c7f40dd66afd4d8198c01a516095631a442
SHA256ca49dc2ff847df8b885053c916c8ac9471e2d4514f92005cf49151a0455f64be
SHA5120de5f692c2a5ee7b60ebe4ccdd2c1b8248e79709cfe660182f97bea4dc2698c4fe9ade7130de1a2e3545d5b27b63d0a06709e2823fa02202f56b42c551d25650