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Analysis
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max time kernel
149s -
max time network
154s -
platform
windows10-2004_x64 -
resource
win10v2004-20230703-en -
resource tags
arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system -
submitted
15/07/2023, 11:00
Behavioral task
behavioral1
Sample
3b46fd285baa2cexeexe_JC.exe
Resource
win7-20230712-en
Behavioral task
behavioral2
Sample
3b46fd285baa2cexeexe_JC.exe
Resource
win10v2004-20230703-en
General
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Target
3b46fd285baa2cexeexe_JC.exe
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Size
100KB
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MD5
3b46fd285baa2cb5e101123d6182b0ca
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SHA1
dead4426af154b7793d520d0104cb471f3daadac
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SHA256
d5cf1bb72a32d9affc39699e947e287bdca361501f6578d7066b06ad5b8e8a04
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SHA512
f25f3816db12a25b0b673f9cd2b141616fdf296708a15a7278804d37a1acc193d20ce5271e0eeaea47f4d98f50d648a4c2bd0a8a11e81b2dc852f0523629b563
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SSDEEP
1536:P8mnK6QFElP6n+gymddpMOtEvwDpjIHsalRn5iF1j6GC5:1nK6a+qdOOtEvwDpjA
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-1-5-21-1043950675-1972537973-2972532878-1000\Control Panel\International\Geo\Nation 3b46fd285baa2cexeexe_JC.exe -
Executes dropped EXE 1 IoCs
pid Process 1652 asih.exe -
resource yara_rule behavioral2/memory/3396-133-0x0000000000500000-0x000000000050F311-memory.dmp upx behavioral2/files/0x00080000000231ee-146.dat upx behavioral2/files/0x00080000000231ee-148.dat upx behavioral2/files/0x00080000000231ee-149.dat upx behavioral2/memory/3396-151-0x0000000000500000-0x000000000050F311-memory.dmp upx behavioral2/memory/1652-159-0x0000000000500000-0x000000000050F311-memory.dmp upx -
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 3396 wrote to memory of 1652 3396 3b46fd285baa2cexeexe_JC.exe 85 PID 3396 wrote to memory of 1652 3396 3b46fd285baa2cexeexe_JC.exe 85 PID 3396 wrote to memory of 1652 3396 3b46fd285baa2cexeexe_JC.exe 85
Processes
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C:\Users\Admin\AppData\Local\Temp\3b46fd285baa2cexeexe_JC.exe"C:\Users\Admin\AppData\Local\Temp\3b46fd285baa2cexeexe_JC.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3396 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:1652
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
100KB
MD59fda3a307745a8f6e76b552cc39bcaa4
SHA142ab00874a02cceeb7931823210dbb3b17f7c08f
SHA256cd5b3226d40779a0386af077b5039fd148a8582e00335590fc52caaa5dc31715
SHA512f2b584bc6de4ed9e201f56e4d68d2dbe036c23818fa4c18aa78d35f8ec8e49756dd46599b9283198e7a09f85e6b6aadd1012a637a24fd3c09ba061feea1bd7c0
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Filesize
100KB
MD59fda3a307745a8f6e76b552cc39bcaa4
SHA142ab00874a02cceeb7931823210dbb3b17f7c08f
SHA256cd5b3226d40779a0386af077b5039fd148a8582e00335590fc52caaa5dc31715
SHA512f2b584bc6de4ed9e201f56e4d68d2dbe036c23818fa4c18aa78d35f8ec8e49756dd46599b9283198e7a09f85e6b6aadd1012a637a24fd3c09ba061feea1bd7c0
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Filesize
100KB
MD59fda3a307745a8f6e76b552cc39bcaa4
SHA142ab00874a02cceeb7931823210dbb3b17f7c08f
SHA256cd5b3226d40779a0386af077b5039fd148a8582e00335590fc52caaa5dc31715
SHA512f2b584bc6de4ed9e201f56e4d68d2dbe036c23818fa4c18aa78d35f8ec8e49756dd46599b9283198e7a09f85e6b6aadd1012a637a24fd3c09ba061feea1bd7c0