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Analysis
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max time kernel
141s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20230831-en -
resource tags
arch:x64arch:x86image:win10v2004-20230831-enlocale:en-usos:windows10-2004-x64system -
submitted
03/09/2023, 11:27
Static task
static1
Behavioral task
behavioral1
Sample
2023-08-22_a94c942d4a76c2c3ada89f1b7e8b3a8c_cryptolocker_JC.exe
Resource
win7-20230831-en
Behavioral task
behavioral2
Sample
2023-08-22_a94c942d4a76c2c3ada89f1b7e8b3a8c_cryptolocker_JC.exe
Resource
win10v2004-20230831-en
General
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Target
2023-08-22_a94c942d4a76c2c3ada89f1b7e8b3a8c_cryptolocker_JC.exe
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Size
59KB
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MD5
a94c942d4a76c2c3ada89f1b7e8b3a8c
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SHA1
c1a82efbbfa6f138ed74a1d5047665a151cfbc95
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SHA256
e47b8740904e9583137a0ad4fd922639d24ada1412df70dd1f7a45513be8744b
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SHA512
202c18b6f7f2ce84c6fe5a7f7e49a3d117ccd1150225ce10da1312a964472ab11c8df20fc681a1d12c6bf38c314795ff7ef2a59a0190d28c23447477f3ed8944
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SSDEEP
1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszudnYTjipvF29B:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7j
Malware Config
Signatures
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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-1-5-21-2415528079-3794552930-4264847036-1000\Control Panel\International\Geo\Nation 2023-08-22_a94c942d4a76c2c3ada89f1b7e8b3a8c_cryptolocker_JC.exe Key value queried \REGISTRY\USER\S-1-5-21-2415528079-3794552930-4264847036-1000\Control Panel\International\Geo\Nation hurok.exe -
Executes dropped EXE 1 IoCs
pid Process 4712 hurok.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 3888 wrote to memory of 4712 3888 2023-08-22_a94c942d4a76c2c3ada89f1b7e8b3a8c_cryptolocker_JC.exe 85 PID 3888 wrote to memory of 4712 3888 2023-08-22_a94c942d4a76c2c3ada89f1b7e8b3a8c_cryptolocker_JC.exe 85 PID 3888 wrote to memory of 4712 3888 2023-08-22_a94c942d4a76c2c3ada89f1b7e8b3a8c_cryptolocker_JC.exe 85
Processes
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C:\Users\Admin\AppData\Local\Temp\2023-08-22_a94c942d4a76c2c3ada89f1b7e8b3a8c_cryptolocker_JC.exe"C:\Users\Admin\AppData\Local\Temp\2023-08-22_a94c942d4a76c2c3ada89f1b7e8b3a8c_cryptolocker_JC.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3888 -
C:\Users\Admin\AppData\Local\Temp\hurok.exe"C:\Users\Admin\AppData\Local\Temp\hurok.exe"2⤵
- Checks computer location settings
- Executes dropped EXE
PID:4712
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
59KB
MD59cf6bfc61745ff822f8f3ba77fd4178e
SHA115e83ad6c3977ebdc71425d15042b0b6005f7294
SHA2564d463618a7161d20327772c22b86d6e77fe95fe785bf5b945682ff33e887bffb
SHA512427e5dd1c866785f85b7a32ec821f6495ce7e1c94095fd96ef6d9288e2f27f314338f3cf4348cb53cc16807617d19dc9b6fc2f5aa9bc3edbe91ea9c9f24802e2
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Filesize
59KB
MD59cf6bfc61745ff822f8f3ba77fd4178e
SHA115e83ad6c3977ebdc71425d15042b0b6005f7294
SHA2564d463618a7161d20327772c22b86d6e77fe95fe785bf5b945682ff33e887bffb
SHA512427e5dd1c866785f85b7a32ec821f6495ce7e1c94095fd96ef6d9288e2f27f314338f3cf4348cb53cc16807617d19dc9b6fc2f5aa9bc3edbe91ea9c9f24802e2
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Filesize
59KB
MD59cf6bfc61745ff822f8f3ba77fd4178e
SHA115e83ad6c3977ebdc71425d15042b0b6005f7294
SHA2564d463618a7161d20327772c22b86d6e77fe95fe785bf5b945682ff33e887bffb
SHA512427e5dd1c866785f85b7a32ec821f6495ce7e1c94095fd96ef6d9288e2f27f314338f3cf4348cb53cc16807617d19dc9b6fc2f5aa9bc3edbe91ea9c9f24802e2