c99abe4c0463ddffee4bb77d64b57d0c93ff7ffcdae9f192cd0fd44b81ab47de

Analysis

max time kernel
238s
max time network
333s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
03/12/2022, 13:13

Target

c99abe4c0463ddffee4bb77d64b57d0c93ff7ffcdae9f192cd0fd44b81ab47de.dll
Size

36KB
MD5

4cb762ec397925857c1473e20e261877
SHA1

e45e4e8222665e48ad0ea454de4e05e82c6538b7
SHA256

c99abe4c0463ddffee4bb77d64b57d0c93ff7ffcdae9f192cd0fd44b81ab47de
SHA512

174cb065ad99475f3ab78e6039309bc5cbfeecc7b97cd7fc3209458520cceecc475a5095a5a19c27a5055dd91c7097cba103779734ed83fd265aff838178032e
SSDEEP

384:ZOgGIbRJpai9c49Wigp5/y+ixe1+B6BDR+v+I7J3SvwKF58o2iU+:rjgiGxy+is1M6BDRK97J3+ZFWo2iU+

Score

8^/10

persistence

Modifies AppInit DLL entries 2 TTPs
persistence

Registry Run Keys / Startup Folder
T1060

Modify Registry
T1112
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Modifies registry class 1 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\regfile\shell\open\command\ = "regedit.exe /s \"%1\""	rundll32.exe

Runs .reg file with regedit 1 IoCs

pid	Process
960	regedit.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1924	rundll32.exe
1924	rundll32.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1488 wrote to memory of 1924	1488	rundll32.exe	28
PID 1488 wrote to memory of 1924	1488	rundll32.exe	28
PID 1488 wrote to memory of 1924	1488	rundll32.exe	28
PID 1488 wrote to memory of 1924	1488	rundll32.exe	28
PID 1488 wrote to memory of 1924	1488	rundll32.exe	28
PID 1488 wrote to memory of 1924	1488	rundll32.exe	28
PID 1488 wrote to memory of 1924	1488	rundll32.exe	28
PID 1924 wrote to memory of 1828	1924	rundll32.exe	29
PID 1924 wrote to memory of 1828	1924	rundll32.exe	29
PID 1924 wrote to memory of 1828	1924	rundll32.exe	29
PID 1924 wrote to memory of 1828	1924	rundll32.exe	29
PID 1828 wrote to memory of 960	1828	cmd.exe	31
PID 1828 wrote to memory of 960	1828	cmd.exe	31
PID 1828 wrote to memory of 960	1828	cmd.exe	31
PID 1828 wrote to memory of 960	1828	cmd.exe	31

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\c99abe4c0463ddffee4bb77d64b57d0c93ff7ffcdae9f192cd0fd44b81ab47de.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1488
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\c99abe4c0463ddffee4bb77d64b57d0c93ff7ffcdae9f192cd0fd44b81ab47de.dll,#1
  2⤵
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1924
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c C:\Users\Admin\AppData\Local\Temp\a.reg
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1828
  - - C:\Windows\SysWOW64\regedit.exe
      "regedit.exe" /s "C:\Users\Admin\AppData\Local\Temp\a.reg"
      4⤵
      Runs .reg file with regedit
      PID:960

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

Privilege Escalation

Defense Evasion

Modify Registry

Credential Access

Discovery

System Information Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

C:\Users\Admin\AppData\Local\Temp\a.reg

Filesize
152B

MD5
b100f5324ef74ded0b998e64d07a2e19

SHA1
40b0d7f51bf2dd8451f1b723d21355c471a5fa46

SHA256
3db613d24a75ae220891698c055e1c580a42e58564f568a0510db87581cc2042

SHA512
c12391bb37c334074f7d7e1257b6364fd5cbce848e0a8fe15b8326f54fd9568fe3baec58618c4334027a774a06a08ec249cb71db925c1f85feee6a3d3a816c04

Download Submit
memory/1924-55-0x0000000076771000-0x0000000076773000-memory.dmp

Filesize
8KB

Download