e5bc458157486d1e0a7586644cbbb94587b95c29baabb3cddbc8ca2ce17eb1a7

General

Target

e5bc458157486d1e0a7586644cbbb94587b95c29baabb3cddbc8ca2ce17eb1a7.exe
Size

225KB
MD5

1f7967917ae0b3ceccc0d63e2f249200
SHA1

e470fb1cf95badc7322b33a069993dc7e2be7185
SHA256

e5bc458157486d1e0a7586644cbbb94587b95c29baabb3cddbc8ca2ce17eb1a7
SHA512

d7df85daf9c68c62e17ee4065b1fcf27673f43502ed770a730c8f1328ea0a62577d5f1210db6ff9c5558c5750cce6ed59169fe1f0c41734b0db7ba07b9952955
SSDEEP

3072:+Oq9Zyvu1mFNPXmlRroxqT9S2c7gcPOLm28rZzAYoDPHYmFcAti2D:Iu4mFh+9S2c7xomHdNIY8cA02

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
524	RUNDLL32.EXE

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Modify Existing Service

T1031

pid	Process
896	netsh.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\2d6c60610fb651f9e704c57a6bbdb40b.exe	RUNDLL32.EXE
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\2d6c60610fb651f9e704c57a6bbdb40b.exe	RUNDLL32.EXE

Loads dropped DLL 2 IoCs

pid	Process
1364	e5bc458157486d1e0a7586644cbbb94587b95c29baabb3cddbc8ca2ce17eb1a7.exe
1364	e5bc458157486d1e0a7586644cbbb94587b95c29baabb3cddbc8ca2ce17eb1a7.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\2d6c60610fb651f9e704c57a6bbdb40b = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\RUNDLL32.EXE\" .."	RUNDLL32.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\2d6c60610fb651f9e704c57a6bbdb40b = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\RUNDLL32.EXE\" .."	RUNDLL32.EXE

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\Microsoft.NET\Framework\v2.0.50727\config\security.config.cch.new	e5bc458157486d1e0a7586644cbbb94587b95c29baabb3cddbc8ca2ce17eb1a7.exe
File created	C:\Windows\Microsoft.NET\Framework\v2.0.50727\config\enterprisesec.config.cch.new	e5bc458157486d1e0a7586644cbbb94587b95c29baabb3cddbc8ca2ce17eb1a7.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
524	RUNDLL32.EXE
524	RUNDLL32.EXE

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	524	RUNDLL32.EXE

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 1364 wrote to memory of 524	1364	e5bc458157486d1e0a7586644cbbb94587b95c29baabb3cddbc8ca2ce17eb1a7.exe	28
PID 1364 wrote to memory of 524	1364	e5bc458157486d1e0a7586644cbbb94587b95c29baabb3cddbc8ca2ce17eb1a7.exe	28
PID 1364 wrote to memory of 524	1364	e5bc458157486d1e0a7586644cbbb94587b95c29baabb3cddbc8ca2ce17eb1a7.exe	28
PID 1364 wrote to memory of 524	1364	e5bc458157486d1e0a7586644cbbb94587b95c29baabb3cddbc8ca2ce17eb1a7.exe	28
PID 1364 wrote to memory of 524	1364	e5bc458157486d1e0a7586644cbbb94587b95c29baabb3cddbc8ca2ce17eb1a7.exe	28
PID 1364 wrote to memory of 524	1364	e5bc458157486d1e0a7586644cbbb94587b95c29baabb3cddbc8ca2ce17eb1a7.exe	28
PID 1364 wrote to memory of 524	1364	e5bc458157486d1e0a7586644cbbb94587b95c29baabb3cddbc8ca2ce17eb1a7.exe	28
PID 524 wrote to memory of 896	524	RUNDLL32.EXE	29
PID 524 wrote to memory of 896	524	RUNDLL32.EXE	29
PID 524 wrote to memory of 896	524	RUNDLL32.EXE	29
PID 524 wrote to memory of 896	524	RUNDLL32.EXE	29

C:\Users\Admin\AppData\Local\Temp\e5bc458157486d1e0a7586644cbbb94587b95c29baabb3cddbc8ca2ce17eb1a7.exe
"C:\Users\Admin\AppData\Local\Temp\e5bc458157486d1e0a7586644cbbb94587b95c29baabb3cddbc8ca2ce17eb1a7.exe"
1⤵
- Loads dropped DLL
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1364
- C:\Users\Admin\AppData\Local\Temp\RUNDLL32.EXE
  "C:\Users\Admin\AppData\Local\Temp\RUNDLL32.EXE"
  2⤵
  - Executes dropped EXE
  - Drops startup file
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:524
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\RUNDLL32.EXE" "RUNDLL32.EXE" ENABLE
    3⤵
    - Modifies Windows Firewall
    PID:896

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Modify Existing Service

1

T1031

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\RUNDLL32.EXE

Filesize
225KB

MD5
1f7967917ae0b3ceccc0d63e2f249200

SHA1
e470fb1cf95badc7322b33a069993dc7e2be7185

SHA256
e5bc458157486d1e0a7586644cbbb94587b95c29baabb3cddbc8ca2ce17eb1a7

SHA512
d7df85daf9c68c62e17ee4065b1fcf27673f43502ed770a730c8f1328ea0a62577d5f1210db6ff9c5558c5750cce6ed59169fe1f0c41734b0db7ba07b9952955

Download Submit
C:\Users\Admin\AppData\Local\Temp\RUNDLL32.EXE

Filesize
225KB

MD5
1f7967917ae0b3ceccc0d63e2f249200

SHA1
e470fb1cf95badc7322b33a069993dc7e2be7185

SHA256
e5bc458157486d1e0a7586644cbbb94587b95c29baabb3cddbc8ca2ce17eb1a7

SHA512
d7df85daf9c68c62e17ee4065b1fcf27673f43502ed770a730c8f1328ea0a62577d5f1210db6ff9c5558c5750cce6ed59169fe1f0c41734b0db7ba07b9952955

Download Submit
C:\Windows\Microsoft.NET\Framework\v2.0.50727\config\security.config.cch

Filesize
514B

MD5
6106bfb7fe936faa3fedcb42cc0822ab

SHA1
20ed396b4a5a23c1aa8e13644e03e94e51cf263c

SHA256
270fcba781fd4d2c6f2260f2e63e39b55762eee4b472877423281d0d652a159f

SHA512
285c710959714c4b815dc218bec94c43afb056b1574a70bde37f026fed339dd0392482507fb44b5a68ae693396c5de9a43a10b146955736329de7aaa58562e0e

Download Submit
\Users\Admin\AppData\Local\Temp\RUNDLL32.EXE

Filesize
225KB

MD5
1f7967917ae0b3ceccc0d63e2f249200

SHA1
e470fb1cf95badc7322b33a069993dc7e2be7185

SHA256
e5bc458157486d1e0a7586644cbbb94587b95c29baabb3cddbc8ca2ce17eb1a7

SHA512
d7df85daf9c68c62e17ee4065b1fcf27673f43502ed770a730c8f1328ea0a62577d5f1210db6ff9c5558c5750cce6ed59169fe1f0c41734b0db7ba07b9952955

Download Submit
\Users\Admin\AppData\Local\Temp\RUNDLL32.EXE

Filesize
225KB

MD5
1f7967917ae0b3ceccc0d63e2f249200

SHA1
e470fb1cf95badc7322b33a069993dc7e2be7185

SHA256
e5bc458157486d1e0a7586644cbbb94587b95c29baabb3cddbc8ca2ce17eb1a7

SHA512
d7df85daf9c68c62e17ee4065b1fcf27673f43502ed770a730c8f1328ea0a62577d5f1210db6ff9c5558c5750cce6ed59169fe1f0c41734b0db7ba07b9952955

Download Submit
memory/524-63-0x0000000074D50000-0x00000000752FB000-memory.dmp

Filesize
5.7MB

Download
memory/524-67-0x0000000074D50000-0x00000000752FB000-memory.dmp

Filesize
5.7MB

Download
memory/1364-54-0x0000000076D71000-0x0000000076D73000-memory.dmp

Filesize
8KB

Download
memory/1364-55-0x0000000074D50000-0x00000000752FB000-memory.dmp

Filesize
5.7MB

Download
memory/1364-66-0x0000000074D50000-0x00000000752FB000-memory.dmp

Filesize
5.7MB

Download

Analysis

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