Analysis
- max time kernel
150s - 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
13/03/2024, 06:34
Behavioral task
behavioral1
Sample
c53644f981d9b9aa02e181f3892b397a.exe
Resource
win7-20240221-en
7 signatures
150 seconds
Behavioral task
behavioral2
Sample
c53644f981d9b9aa02e181f3892b397a.exe
Resource
win10v2004-20240226-en
7 signatures
150 seconds
General
- Target c53644f981d9b9aa02e181f3892b397a.exe
- Size 148KB
- Sample240313-hb4jhsfa2s
- SHA256 0153f6a3837464d1dfdc6552859c300c559f19ba096c9ad29d912acb0ffc74fc
- MD5 c53644f981d9b9aa02e181f3892b397a
- SHA1 e722d7c6aaab9a5cbcf11783106d16e634b4a45b
- SHA512 d7fd31a1f09bc04dbf2b2a2b3d7eea39220a5bec925425bb838b652dc09ab4e391681277ae00a2e48bf80abff9b2b8893f12edaac84bdc770eee1feffd8189bd
- SSDEEP 3072:Ag53GC8Zq3hhhIPLw6F7x6EJ1rV2dmgIPfJCmDDVD/xg:AQGCMq3hsPLn7VJ1hDgcfJTpxg
- MD5 SHA1 SHA512 SSDEEP
Score
7/10
Malware Config
Signatures
-
resource yara_rule behavioral2/files/0x000800000002321f-11.dat aspack_v212_v242 - 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-1-5-21-983155329-280873152-1838004294-1000\Control Panel\International\Geo\Nation c53644f981d9b9aa02e181f3892b397a.exe - Executes dropped EXE 1 IoCs
pid Process 2568 Carebaby.exe -
resource yara_rule behavioral2/memory/2244-0-0x0000000000400000-0x0000000000426000-memory.dmp upx behavioral2/memory/2244-20-0x0000000000400000-0x0000000000426000-memory.dmp upx - Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs
Bootkits write to the MBR to gain persistence at a level below the operating system.
description ioc Process File opened for modification \??\PhysicalDrive0 Carebaby.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 2244 wrote to memory of 2568 2244 c53644f981d9b9aa02e181f3892b397a.exe 88 PID 2244 wrote to memory of 2568 2244 c53644f981d9b9aa02e181f3892b397a.exe 88 PID 2244 wrote to memory of 2568 2244 c53644f981d9b9aa02e181f3892b397a.exe 88
Processes
-
C:\Users\Admin\AppData\Local\Temp\c53644f981d9b9aa02e181f3892b397a.exe"C:\Users\Admin\AppData\Local\Temp\c53644f981d9b9aa02e181f3892b397a.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2244 -
C:\Users\Admin\AppData\Local\Temp\RarSFX0\Carebaby.exe"C:\Users\Admin\AppData\Local\Temp\RarSFX0\Carebaby.exe"2⤵
- Executes dropped EXE
- Writes to the Master Boot Record (MBR)
PID:2568
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\CareBaby.exe
- Size 38KB
- SHA256 468a5636745296e846ed16a967d93adff13bfaad9ebe5c4c7dc6c7176385952a
- MD5 9077344bb377371822a5832e2466253f
- SHA1 ca2e6edc72ab9e7964b5be3a3bcf3d9a60592f5e
- SHA512 67a2555e8a2291ff7ec45c97963fbfb96ff41c65a533dc8645052734de47982c4ab39cdb5363c3da09ed6e18f6472eaf005b1bf3fc328e3dea8f0950a42423d7
- SSDEEP 768:BgR1IkWFumMqrGrpe5TtLCocaUij8/wiF0xnha55P:JtUmMqEpSTNCoca/Os4
- MD5 SHA1 SHA512 SSDEEP