Analysis
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max time kernel
149s -
max time network
156s -
platform
windows10-2004_x64 -
resource
win10v2004-20230703-en -
resource tags
arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system -
submitted
17-07-2023 18:21
Static task
static1
Behavioral task
behavioral1
Sample
a3bf939aef9de3_JC.exe
Resource
win7-20230712-en
Behavioral task
behavioral2
Sample
a3bf939aef9de3_JC.exe
Resource
win10v2004-20230703-en
General
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Target
a3bf939aef9de3_JC.exe
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Size
31KB
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MD5
a3bf939aef9de3acbd851d03b464bff5
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SHA1
32c0dd5cc60a7e52a8d9d315149fa14f433eb904
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SHA256
51d921897f5aa6e6881538b65faa242de61bad6849faccd1ff52f2b5eb3f2507
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SHA512
09a4402f91b09f63bd06adf5aba1efa523b88efa39e59ff10cb0fdaba13c1eafd174b15dac8fed2d9bcffbf1f8a40386e81663f582a8a57073ebda7294971440
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SSDEEP
384:bAvMaNGh4z7CG3POOvbRSLoF/F0QU5XYFnufc/zzoiEcIuqFwfa:bAvJCYOOvbRPDEgXNZS
Malware Config
Signatures
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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-1-5-21-3195054982-4292022746-1467505928-1000\Control Panel\International\Geo\Nation a3bf939aef9de3_JC.exe -
Executes dropped EXE 1 IoCs
pid Process 4676 demka.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 4244 wrote to memory of 4676 4244 a3bf939aef9de3_JC.exe 86 PID 4244 wrote to memory of 4676 4244 a3bf939aef9de3_JC.exe 86 PID 4244 wrote to memory of 4676 4244 a3bf939aef9de3_JC.exe 86
Processes
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C:\Users\Admin\AppData\Local\Temp\a3bf939aef9de3_JC.exe"C:\Users\Admin\AppData\Local\Temp\a3bf939aef9de3_JC.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4244 -
C:\Users\Admin\AppData\Local\Temp\demka.exe"C:\Users\Admin\AppData\Local\Temp\demka.exe"2⤵
- Executes dropped EXE
PID:4676
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
-
Filesize
31KB
MD528aefa962b6be25221c0c845836aeb90
SHA1f9c4fda31b323dc9e24cb22558ab30eb719cd6f3
SHA256306abf9965ff559e07eb1b82650bf19c2f21d5c59e9512e96a35ac934f19c294
SHA5126e61ae6320923d0c58de4abb4ffd867caf6a2185cc2d071cd9a604f66e79da29eb9f31ebea39191d0d97a284a366429a4691bf31bd6ff1d9d0808973359dcd41
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Filesize
31KB
MD528aefa962b6be25221c0c845836aeb90
SHA1f9c4fda31b323dc9e24cb22558ab30eb719cd6f3
SHA256306abf9965ff559e07eb1b82650bf19c2f21d5c59e9512e96a35ac934f19c294
SHA5126e61ae6320923d0c58de4abb4ffd867caf6a2185cc2d071cd9a604f66e79da29eb9f31ebea39191d0d97a284a366429a4691bf31bd6ff1d9d0808973359dcd41
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Filesize
31KB
MD528aefa962b6be25221c0c845836aeb90
SHA1f9c4fda31b323dc9e24cb22558ab30eb719cd6f3
SHA256306abf9965ff559e07eb1b82650bf19c2f21d5c59e9512e96a35ac934f19c294
SHA5126e61ae6320923d0c58de4abb4ffd867caf6a2185cc2d071cd9a604f66e79da29eb9f31ebea39191d0d97a284a366429a4691bf31bd6ff1d9d0808973359dcd41