b86635d574727c0513d2993f4873a0c65f436eabc9fa0168db369db43c7e5490

Analysis

max time kernel
23s
max time network
46s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
03/12/2022, 06:38

Target

b86635d574727c0513d2993f4873a0c65f436eabc9fa0168db369db43c7e5490.dll
Size

60KB
MD5

f0c45d14dc434d999a996744bea1ed9d
SHA1

6ef4c6153155780df9c1e2a78db08b313c5ad4f0
SHA256

b86635d574727c0513d2993f4873a0c65f436eabc9fa0168db369db43c7e5490
SHA512

7d984e6a7d1480171f0b113568082d320006be96c95079d337801405d8f59965cf826d902184ab6b54fb6a4656140c4235836508f44f01c327de933741d8c379
SSDEEP

768:8BZX+Nzp4mjNx4Ss4l6iE18++uWdB9GBc81f+Iw5BLJUXNPgH9nmscY:8Pdc2inuWdB9r8YXPJY2BmscY

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
1340	regedit.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
956	rundll32.exe
956	rundll32.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1928 wrote to memory of 956	1928	rundll32.exe	27
PID 1928 wrote to memory of 956	1928	rundll32.exe	27
PID 1928 wrote to memory of 956	1928	rundll32.exe	27
PID 1928 wrote to memory of 956	1928	rundll32.exe	27
PID 1928 wrote to memory of 956	1928	rundll32.exe	27
PID 1928 wrote to memory of 956	1928	rundll32.exe	27
PID 1928 wrote to memory of 956	1928	rundll32.exe	27
PID 956 wrote to memory of 1584	956	rundll32.exe	28
PID 956 wrote to memory of 1584	956	rundll32.exe	28
PID 956 wrote to memory of 1584	956	rundll32.exe	28
PID 956 wrote to memory of 1584	956	rundll32.exe	28
PID 1584 wrote to memory of 1340	1584	cmd.exe	30
PID 1584 wrote to memory of 1340	1584	cmd.exe	30
PID 1584 wrote to memory of 1340	1584	cmd.exe	30
PID 1584 wrote to memory of 1340	1584	cmd.exe	30

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\b86635d574727c0513d2993f4873a0c65f436eabc9fa0168db369db43c7e5490.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1928
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\b86635d574727c0513d2993f4873a0c65f436eabc9fa0168db369db43c7e5490.dll,#1
  2⤵
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:956
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c C:\Users\Admin\AppData\Local\Temp\a.reg
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1584
  - - C:\Windows\SysWOW64\regedit.exe
      "regedit.exe" /s "C:\Users\Admin\AppData\Local\Temp\a.reg"
      4⤵
      Runs .reg file with regedit
      PID:1340

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/956-55-0x0000000075E11000-0x0000000075E13000-memory.dmp

Filesize
8KB

Download
memory/956-56-0x0000000010000000-0x000000001000F000-memory.dmp

Filesize
60KB

Download