Analysis
- max time kernel
65s - max time network
11s - platform
windows7_x64 - resource
win7v20201028 - submitted
04/02/2021, 07:14
General
- Target 소개 편지_0001-Letter of Intro_.exe
- Size 547KB
- Sample210204-kthny7f556
- SHA256 fb00b6b2b4926cf293cce405408643b5cddbd8b21ec8cba9dbd6b44a1d34231d
Score
5/10
Malware Config
Signatures
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Program crash 1 IoCs
- Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 7 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 8 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\소개 편지_0001-Letter of Intro_.exe"C:\Users\Admin\AppData\Local\Temp\소개 편지_0001-Letter of Intro_.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\vQfQqIAjTU" /XML "C:\Users\Admin\AppData\Local\Temp\tmp955D.tmp"2⤵
- Creates scheduled task(s)
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1656 -s 9962⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/1656-2-0x0000000074640000-0x0000000074D2E000-memory.dmp
memory/1656-3-0x00000000010B0000-0x00000000010B1000-memory.dmp
memory/1656-5-0x0000000001050000-0x0000000001051000-memory.dmp
memory/1656-6-0x0000000000530000-0x0000000000534000-memory.dmp
memory/1656-7-0x0000000000E20000-0x0000000000E6B000-memory.dmp
memory/1684-11-0x0000000000840000-0x0000000000851000-memory.dmp
memory/1684-14-0x0000000000C60000-0x0000000000C61000-memory.dmp