Analysis
-
max time kernel
148s -
max time network
152s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
30-04-2024 11:45
Static task
static1
Behavioral task
behavioral1
Sample
202404308d0d8d3e9bb5402ca915873fb47f5fddcryptolocker.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
202404308d0d8d3e9bb5402ca915873fb47f5fddcryptolocker.exe
Resource
win10v2004-20240226-en
General
-
Target
202404308d0d8d3e9bb5402ca915873fb47f5fddcryptolocker.exe
-
Size
64KB
-
MD5
8d0d8d3e9bb5402ca915873fb47f5fdd
-
SHA1
0f83e11c43fba407979e5e0cb9d27be59a8a8b8c
-
SHA256
3259dfcb92307e10e0a55631a6977468e494686ab262e94b1409ca7becfbb9db
-
SHA512
a458f125bde91ee372f1dcbe17bb754be4b9f6022e6d02a9473d5e4b755b8b0d41b0dd3915a8b4d027a550d66d5fa1ab273b83286556ada1e14d44239df71804
-
SSDEEP
1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszudnYTjipvF293Cis:aq7tdgI2MyzNORQtOflIwoHNV2XBFV76
Malware Config
Signatures
-
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 hurok.exe Key value queried \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation 202404308d0d8d3e9bb5402ca915873fb47f5fddcryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 3900 hurok.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
-
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 1904 wrote to memory of 3900 1904 202404308d0d8d3e9bb5402ca915873fb47f5fddcryptolocker.exe 90 PID 1904 wrote to memory of 3900 1904 202404308d0d8d3e9bb5402ca915873fb47f5fddcryptolocker.exe 90 PID 1904 wrote to memory of 3900 1904 202404308d0d8d3e9bb5402ca915873fb47f5fddcryptolocker.exe 90
Processes
-
C:\Users\Admin\AppData\Local\Temp\202404308d0d8d3e9bb5402ca915873fb47f5fddcryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\202404308d0d8d3e9bb5402ca915873fb47f5fddcryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1904 -
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:3900
-
-
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=3896 --field-trial-handle=2304,i,6987730730348465820,3913273227385401271,262144 --variations-seed-version /prefetch:81⤵PID:3448
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
64KB
MD5208b55f695e452eb3218ce2d4a0b9cc0
SHA100fe896be78a4094a69d5de0d00bdf68091d49ff
SHA2568e4c1bf144deff8236037076111f85ce7c4fbe6c70c366a050088b3e8d17f85d
SHA5126851a39fdc1bdaab72532257fe8ba5327c20ccbe13d47c3766d12ca0c88935c842eba5b6852e1bd8701c6c92f7b97c47ef9b56c1c0a06bc594bbd2ea0e618c98