Analysis
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max time kernel
164s -
max time network
185s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system -
submitted
12-01-2024 06:01
Static task
static1
Behavioral task
behavioral1
Sample
2024-01-11_85158732031ef7bcec40bd82c46aed0a_cryptolocker.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
2024-01-11_85158732031ef7bcec40bd82c46aed0a_cryptolocker.exe
Resource
win10v2004-20231215-en
General
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Target
2024-01-11_85158732031ef7bcec40bd82c46aed0a_cryptolocker.exe
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Size
44KB
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MD5
85158732031ef7bcec40bd82c46aed0a
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SHA1
0704e3cd553131361aa49032678aa826e2b1e8c7
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SHA256
6ab63733347e0400bb8e0b1f61525524d12264661b20b46810fcc350933c60a9
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SHA512
027e466252671d2729ca0c232677639ede09d83f533cabbbb754f53341d13d7297a83f954e1a01f4faa91a6210c49ea05cc94b894bac4562193eb1bdfb3c3436
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SSDEEP
768:bgX4zYcgTEu6QOaryfjqDlC6JFbK37Yl6dI5:bgGYcA/53GAA6y37Q6dI5
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-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation 2024-01-11_85158732031ef7bcec40bd82c46aed0a_cryptolocker.exe Key value queried \REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation hasfj.exe -
Executes dropped EXE 1 IoCs
pid Process 4216 hasfj.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 368 wrote to memory of 4216 368 2024-01-11_85158732031ef7bcec40bd82c46aed0a_cryptolocker.exe 89 PID 368 wrote to memory of 4216 368 2024-01-11_85158732031ef7bcec40bd82c46aed0a_cryptolocker.exe 89 PID 368 wrote to memory of 4216 368 2024-01-11_85158732031ef7bcec40bd82c46aed0a_cryptolocker.exe 89
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-01-11_85158732031ef7bcec40bd82c46aed0a_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-01-11_85158732031ef7bcec40bd82c46aed0a_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:368 -
C:\Users\Admin\AppData\Local\Temp\hasfj.exe"C:\Users\Admin\AppData\Local\Temp\hasfj.exe"2⤵
- Checks computer location settings
- Executes dropped EXE
PID:4216
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
45KB
MD579510311f297cc6a64aef66f41a4de2d
SHA1098b0eb52782a1b8ec34c4751a12d928bc534ab8
SHA256475aea63fdb2c58756ca47408a56953f045f773eef2cdb207fee57ab415aea4d
SHA512f1a4ec3abd655e9a011f71beb6bf95e2805e85bfcb6631abe2e7231f223ee1221c43af207d0ccafe02f93ccd4650d4d5f18e358c4a0e9771b06fde1a37082169