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Analysis
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max time kernel
149s -
max time network
155s -
platform
windows10-2004_x64 -
resource
win10v2004-20230703-en -
resource tags
arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system -
submitted
22/07/2023, 22:20
Behavioral task
behavioral1
Sample
NA_0899b5cd769290exe_JC.exe
Resource
win7-20230712-en
Behavioral task
behavioral2
Sample
NA_0899b5cd769290exe_JC.exe
Resource
win10v2004-20230703-en
General
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Target
NA_0899b5cd769290exe_JC.exe
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Size
63KB
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MD5
0899b5cd769290866c5642d08db31c1b
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SHA1
cf6698d38713efcefe2e7940d24d1c4e27042845
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SHA256
1518ce880dcf50ffd3695f1a61af91802f162de772a8543a570d94348b1fa85a
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SHA512
f5147e6bd44509ece322dc2c62ed62caaf2245662dddf4e1eaf5262d597655fd6fe537c8f99e1d228f61ae91d1e4379e5bc518e2d87504986cf47b73be16c7e0
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SSDEEP
1536:z6QFElP6n+gKmddpMOtEvwDpj9aYaFAh5N:z6a+CdOOtEvwDpjQO
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-1-5-21-3011986978-2180659500-3669311805-1000\Control Panel\International\Geo\Nation NA_0899b5cd769290exe_JC.exe -
Executes dropped EXE 1 IoCs
pid Process 4232 asih.exe -
resource yara_rule behavioral2/memory/544-133-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral2/files/0x0007000000023249-146.dat upx behavioral2/files/0x0007000000023249-148.dat upx behavioral2/files/0x0007000000023249-149.dat upx behavioral2/memory/4232-150-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral2/memory/544-151-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral2/memory/4232-160-0x0000000000500000-0x0000000000510000-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 544 wrote to memory of 4232 544 NA_0899b5cd769290exe_JC.exe 86 PID 544 wrote to memory of 4232 544 NA_0899b5cd769290exe_JC.exe 86 PID 544 wrote to memory of 4232 544 NA_0899b5cd769290exe_JC.exe 86
Processes
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C:\Users\Admin\AppData\Local\Temp\NA_0899b5cd769290exe_JC.exe"C:\Users\Admin\AppData\Local\Temp\NA_0899b5cd769290exe_JC.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:544 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:4232
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
63KB
MD5b5667f052c1564d0da30dfb1f458e01c
SHA178581913d03d0cdcc367b22166f8763eecb1e17f
SHA256319646c452f749d7f9c7b3345619fbb4e6c81102d120d51411d847665148ec89
SHA512377503da3a6e5c52258abd77976bc978e44e7d2ae6b4c7bbb0ad1f6ea8b11d8a0ca8afc6d71441ef5fa4d0a3b78fece8155af1270d816199ae21e321d8d0af27
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Filesize
63KB
MD5b5667f052c1564d0da30dfb1f458e01c
SHA178581913d03d0cdcc367b22166f8763eecb1e17f
SHA256319646c452f749d7f9c7b3345619fbb4e6c81102d120d51411d847665148ec89
SHA512377503da3a6e5c52258abd77976bc978e44e7d2ae6b4c7bbb0ad1f6ea8b11d8a0ca8afc6d71441ef5fa4d0a3b78fece8155af1270d816199ae21e321d8d0af27
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Filesize
63KB
MD5b5667f052c1564d0da30dfb1f458e01c
SHA178581913d03d0cdcc367b22166f8763eecb1e17f
SHA256319646c452f749d7f9c7b3345619fbb4e6c81102d120d51411d847665148ec89
SHA512377503da3a6e5c52258abd77976bc978e44e7d2ae6b4c7bbb0ad1f6ea8b11d8a0ca8afc6d71441ef5fa4d0a3b78fece8155af1270d816199ae21e321d8d0af27