49e3354652b992abb8353ece9f3116040bf63bfcff52027be7781369a12d13aa | Triage

Analysis

max time kernel
61s
max time network
8s
platform
windows7_x64
resource
win7v20201028
submitted
03-12-2020 17:00

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General

Target

sample.dll

Score

5^/10

Malware Config

Signatures

Drops file in System32 directory 2 IoCs

Processes:

rundll32.exe

description	ioc	process
File opened for modification	C:\Windows\system32\rundll32.exe: $TASK	rundll32.exe
File opened for modification	C:\Windows\system32\rundll32.exe: $FILE	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskeng.exe

description pid process

Token: SeIncBasePriorityPrivilege 1720 taskeng.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

taskeng.exe

description	pid	process	target process
PID 1720 wrote to memory of 1612	1720	taskeng.exe	rundll32.exe
PID 1720 wrote to memory of 1612	1720	taskeng.exe	rundll32.exe
PID 1720 wrote to memory of 1612	1720	taskeng.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\sample.dll,#1
1⤵
- Drops file in System32 directory
PID:1640

C:\Windows\system32\taskeng.exe
taskeng.exe {07702D4A-B26B-429A-A204-452E16B9A8ED} S-1-5-18:NT AUTHORITY\System:Service:
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1720

C:\Windows\system32\rundll32.exe
C:\Windows\system32\rundll32.exe -u
2⤵
PID:1612

MITRE ATT&CK Matrix

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Downloads

memory/1612-2-0x0000000000000000-mapping.dmp

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