Analysis
-
max time kernel
147s -
max time network
148s -
platform
windows7_x64 -
resource
win7-20240705-en -
resource tags
arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system -
submitted
02/09/2024, 23:54
Behavioral task
behavioral1
Sample
2024-09-02_b5ea1df9ac47e25fa837e56be0cdf577_cryptolocker.exe
Resource
win7-20240705-en
General
-
Target
2024-09-02_b5ea1df9ac47e25fa837e56be0cdf577_cryptolocker.exe
-
Size
39KB
-
MD5
b5ea1df9ac47e25fa837e56be0cdf577
-
SHA1
6811bedb0dc808e0fb255b338bd1a2c3d5123973
-
SHA256
ec95a562c9000808f82ec4b93d3aee40ce1f30dc74d8f28b6bfbd801301b7c06
-
SHA512
7fc93eb994eba297e5bcf4bffdd6365d8fe01569142521651371d98cb499281ea5b133b910ab445bc20bdcddf1f5dd6b6017e2e1fc34e0d61ba61c41eaa352b6
-
SSDEEP
768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITi:qDdFJy3QMOtEvwDpjjWMl7Ti
Malware Config
Signatures
-
Executes dropped EXE 1 IoCs
pid Process 2348 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 2404 2024-09-02_b5ea1df9ac47e25fa837e56be0cdf577_cryptolocker.exe -
resource yara_rule behavioral1/memory/2404-0-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/files/0x00090000000120fa-15.dat upx behavioral1/memory/2404-14-0x0000000001D60000-0x0000000001D70000-memory.dmp upx behavioral1/memory/2404-17-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2348-27-0x0000000000500000-0x0000000000510000-memory.dmp upx -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
-
System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 2024-09-02_b5ea1df9ac47e25fa837e56be0cdf577_cryptolocker.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language asih.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 2404 wrote to memory of 2348 2404 2024-09-02_b5ea1df9ac47e25fa837e56be0cdf577_cryptolocker.exe 30 PID 2404 wrote to memory of 2348 2404 2024-09-02_b5ea1df9ac47e25fa837e56be0cdf577_cryptolocker.exe 30 PID 2404 wrote to memory of 2348 2404 2024-09-02_b5ea1df9ac47e25fa837e56be0cdf577_cryptolocker.exe 30 PID 2404 wrote to memory of 2348 2404 2024-09-02_b5ea1df9ac47e25fa837e56be0cdf577_cryptolocker.exe 30
Processes
-
C:\Users\Admin\AppData\Local\Temp\2024-09-02_b5ea1df9ac47e25fa837e56be0cdf577_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-09-02_b5ea1df9ac47e25fa837e56be0cdf577_cryptolocker.exe"1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2404 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:2348
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
39KB
MD5f6ef1d5202e8ff7f8eb48761fa0fec43
SHA18bbb1b98432d94579c5365e8ffe0f21729663234
SHA256a7f498a2da13b4b3b60c470fa2e1d04c73d1dd3f88ddbfd4f3824737e8068d73
SHA51253a1659eb0b7b9f147476a45c43a7b4344933614347c745489be4844c28fadceb946013438c498b790f19c3079f61e6f55a5cefc6bc89c54e750924a41202048