bd9f3a72419c6a5e71806aaede5881a611f368e10beaa15171ba8bce8d73b877

Analysis

max time kernel
130s
max time network
143s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
03/12/2022, 13:13

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

bd9f3a72419c6a5e71806aaede5881a611f368e10beaa15171ba8bce8d73b877.dll
Size

245KB
MD5

15e91dca93549b6bf03c7671bc979bd9
SHA1

c1750227f11ae6919539da2d22682c46248a7494
SHA256

bd9f3a72419c6a5e71806aaede5881a611f368e10beaa15171ba8bce8d73b877
SHA512

5c50b17e7276098d1a7309908c1f581b2cbac0a0687475efae00feb7d5a275e0bcff95c32c9c64551e90f0044fa29f8658d28835483445be4b8e686f808a31c6
SSDEEP

6144:8C1fTk+Y3KKYnM93zllD5zq8ezw0Hkouf80PzW8g2eWX/XYl13s:lbG3KKiAnDAzwdoufjHLdh

Score

8^/10

persistence

Malware Config

Signatures

Blocklisted process makes network request 5 IoCs

flow	pid	Process
2	2020	rundll32.exe
4	2020	rundll32.exe
7	2020	rundll32.exe
9	2020	rundll32.exe
11	2020	rundll32.exe

Sets DLL path for service in the registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\.Net CLR\Parameters\ServiceDll = "C:\\Users\\Admin\\AppData\\Local\\Temp\\bd9f3a72419c6a5e71806aaede5881a611f368e10beaa15171ba8bce8d73b877.dll"	rundll32.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2020	rundll32.exe
2020	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	2004	rundll32.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 1948 wrote to memory of 2004	1948	rundll32.exe	28
PID 1948 wrote to memory of 2004	1948	rundll32.exe	28
PID 1948 wrote to memory of 2004	1948	rundll32.exe	28
PID 1948 wrote to memory of 2004	1948	rundll32.exe	28
PID 1948 wrote to memory of 2004	1948	rundll32.exe	28
PID 1948 wrote to memory of 2004	1948	rundll32.exe	28
PID 1948 wrote to memory of 2004	1948	rundll32.exe	28
PID 1888 wrote to memory of 2020	1888	svchost.exe	30
PID 1888 wrote to memory of 2020	1888	svchost.exe	30
PID 1888 wrote to memory of 2020	1888	svchost.exe	30
PID 1888 wrote to memory of 2020	1888	svchost.exe	30
PID 1888 wrote to memory of 2020	1888	svchost.exe	30
PID 1888 wrote to memory of 2020	1888	svchost.exe	30
PID 1888 wrote to memory of 2020	1888	svchost.exe	30
PID 2004 wrote to memory of 1584	2004	rundll32.exe	31
PID 2004 wrote to memory of 1584	2004	rundll32.exe	31
PID 2004 wrote to memory of 1584	2004	rundll32.exe	31
PID 2004 wrote to memory of 1584	2004	rundll32.exe	31

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\bd9f3a72419c6a5e71806aaede5881a611f368e10beaa15171ba8bce8d73b877.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1948
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\bd9f3a72419c6a5e71806aaede5881a611f368e10beaa15171ba8bce8d73b877.dll,#1
  2⤵
  - Sets DLL path for service in the registry
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2004
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c del "C:\Windows\SysWOW64\rundll32.exe" > nul
    3⤵
    PID:1584

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k ".Net CLR"
1⤵
- Suspicious use of WriteProcessMemory
PID:1888
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe "c:\users\admin\appdata\local\temp\bd9f3a72419c6a5e71806aaede5881a611f368e10beaa15171ba8bce8d73b877.dll", Launch
  2⤵
  - Blocklisted process makes network request
  - Suspicious behavior: EnumeratesProcesses
  PID:2020

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/1888-61-0x0000000010000000-0x0000000010155000-memory.dmp

Filesize
1.3MB

Download
memory/2004-55-0x00000000764D1000-0x00000000764D3000-memory.dmp

Filesize
8KB

Download
memory/2020-60-0x0000000010000000-0x0000000010155000-memory.dmp

Filesize
1.3MB

Download