b114c67a671f1c9969fb0c86b081f5f09ca9448d567db20f46da69e678ce4c9b

Analysis

max time kernel
176s
max time network
187s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
03-12-2022 15:10

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General

Target

b114c67a671f1c9969fb0c86b081f5f09ca9448d567db20f46da69e678ce4c9b.dll
Size

25KB
MD5

fb88cfe384063f0c0e2ee8388be1abc8
SHA1

463fe46f09e3a19674a4ddca2d3c2c4c563f52d3
SHA256

b114c67a671f1c9969fb0c86b081f5f09ca9448d567db20f46da69e678ce4c9b
SHA512

d6f622825c03e53fc762df7f551dbec1d3fc1b68ae661bb23bfe128ae83a9d21fb1ca526da9e2900810ec8c5eada0ad3d6420ba8b45baff4d04f348d57f8b439
SSDEEP

384:3hGOg48MrU3pdAKg0NXAlSIfQGuVa9043NYElIBMMNT3X96hZRY8i8LwsHQC:RJHmbNfIfQpsTlo96hTxLhl

Score

7^/10

persistence

Malware Config

Signatures

Loads dropped DLL 3 IoCs

pid	Process
5116	rundll32.exe
5116	rundll32.exe
1972	rundll32.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\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\MSServer = "rundll32.exe C:\\Windows\\system32\\nnNEwXOe.dll,#1"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\	rundll32.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\nnNEwXOe.dll	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\nnNEwXOe.dll	rundll32.exe

Modifies registry class 4 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6D794CB4-C7CD-4c6f-BFDC-9B77AFBDC02C}\InprocServer32\ThreadingModel = "Both"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6D794CB4-C7CD-4c6f-BFDC-9B77AFBDC02C}	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6D794CB4-C7CD-4c6f-BFDC-9B77AFBDC02C}\InprocServer32	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6D794CB4-C7CD-4c6f-BFDC-9B77AFBDC02C}\InprocServer32\ = "C:\\Windows\\SysWow64\\nnNEwXOe.dll"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
5116	rundll32.exe
5116	rundll32.exe
1972	rundll32.exe
1972	rundll32.exe
1972	rundll32.exe
1972	rundll32.exe
1972	rundll32.exe
1972	rundll32.exe
1972	rundll32.exe
1972	rundll32.exe
1972	rundll32.exe
1972	rundll32.exe
1972	rundll32.exe
1972	rundll32.exe
1972	rundll32.exe
1972	rundll32.exe
1972	rundll32.exe
1972	rundll32.exe
1972	rundll32.exe
1972	rundll32.exe
1972	rundll32.exe
1972	rundll32.exe
1972	rundll32.exe
1972	rundll32.exe
1972	rundll32.exe
1972	rundll32.exe
1972	rundll32.exe
1972	rundll32.exe
1972	rundll32.exe
1972	rundll32.exe
1972	rundll32.exe
1972	rundll32.exe
1972	rundll32.exe
1972	rundll32.exe
1972	rundll32.exe
1972	rundll32.exe
1972	rundll32.exe
1972	rundll32.exe
1972	rundll32.exe
1972	rundll32.exe
1972	rundll32.exe
1972	rundll32.exe
1972	rundll32.exe
1972	rundll32.exe
1972	rundll32.exe
1972	rundll32.exe
1972	rundll32.exe
1972	rundll32.exe
1972	rundll32.exe
1972	rundll32.exe
1972	rundll32.exe
1972	rundll32.exe
1972	rundll32.exe
1972	rundll32.exe
1972	rundll32.exe
1972	rundll32.exe
1972	rundll32.exe
1972	rundll32.exe
1972	rundll32.exe
1972	rundll32.exe
1972	rundll32.exe
1972	rundll32.exe
1972	rundll32.exe
1972	rundll32.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
5116	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	5116	rundll32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
5116	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 5060 wrote to memory of 5116	5060	rundll32.exe	83
PID 5060 wrote to memory of 5116	5060	rundll32.exe	83
PID 5060 wrote to memory of 5116	5060	rundll32.exe	83
PID 5116 wrote to memory of 580	5116	rundll32.exe	4
PID 5116 wrote to memory of 1972	5116	rundll32.exe	86
PID 5116 wrote to memory of 1972	5116	rundll32.exe	86
PID 5116 wrote to memory of 1972	5116	rundll32.exe	86

C:\Windows\system32\winlogon.exe
winlogon.exe
1⤵
PID:580

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\b114c67a671f1c9969fb0c86b081f5f09ca9448d567db20f46da69e678ce4c9b.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:5060
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\b114c67a671f1c9969fb0c86b081f5f09ca9448d567db20f46da69e678ce4c9b.dll,#1
  2⤵
  - Loads dropped DLL
  - Drops file in System32 directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: RenamesItself
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:5116
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe C:\Windows\system32\nnNEwXOe.dll,a
    3⤵
    - Loads dropped DLL
    - Adds Run key to start application
    - Modifies registry class
    - Suspicious behavior: EnumeratesProcesses
    PID:1972

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\SysWOW64\nnNEwXOe.dll

Filesize
25KB

MD5
fb88cfe384063f0c0e2ee8388be1abc8

SHA1
463fe46f09e3a19674a4ddca2d3c2c4c563f52d3

SHA256
b114c67a671f1c9969fb0c86b081f5f09ca9448d567db20f46da69e678ce4c9b

SHA512
d6f622825c03e53fc762df7f551dbec1d3fc1b68ae661bb23bfe128ae83a9d21fb1ca526da9e2900810ec8c5eada0ad3d6420ba8b45baff4d04f348d57f8b439

Download Submit
C:\Windows\SysWOW64\nnNEwXOe.dll

Filesize
25KB

MD5
fb88cfe384063f0c0e2ee8388be1abc8

SHA1
463fe46f09e3a19674a4ddca2d3c2c4c563f52d3

SHA256
b114c67a671f1c9969fb0c86b081f5f09ca9448d567db20f46da69e678ce4c9b

SHA512
d6f622825c03e53fc762df7f551dbec1d3fc1b68ae661bb23bfe128ae83a9d21fb1ca526da9e2900810ec8c5eada0ad3d6420ba8b45baff4d04f348d57f8b439

Download Submit
C:\Windows\SysWOW64\nnNEwXOe.dll

Filesize
25KB

MD5
fb88cfe384063f0c0e2ee8388be1abc8

SHA1
463fe46f09e3a19674a4ddca2d3c2c4c563f52d3

SHA256
b114c67a671f1c9969fb0c86b081f5f09ca9448d567db20f46da69e678ce4c9b

SHA512
d6f622825c03e53fc762df7f551dbec1d3fc1b68ae661bb23bfe128ae83a9d21fb1ca526da9e2900810ec8c5eada0ad3d6420ba8b45baff4d04f348d57f8b439

Download Submit
C:\Windows\SysWOW64\nnNEwXOe.dll

Filesize
25KB

MD5
fb88cfe384063f0c0e2ee8388be1abc8

SHA1
463fe46f09e3a19674a4ddca2d3c2c4c563f52d3

SHA256
b114c67a671f1c9969fb0c86b081f5f09ca9448d567db20f46da69e678ce4c9b

SHA512
d6f622825c03e53fc762df7f551dbec1d3fc1b68ae661bb23bfe128ae83a9d21fb1ca526da9e2900810ec8c5eada0ad3d6420ba8b45baff4d04f348d57f8b439

Download Submit
memory/1972-138-0x0000000000000000-mapping.dmp

Download
memory/1972-141-0x0000000010000000-0x0000000010012000-memory.dmp

Filesize
72KB

Download
memory/1972-142-0x0000000010000000-0x0000000010012000-memory.dmp

Filesize
72KB

Download
memory/5116-132-0x0000000000000000-mapping.dmp

Download
memory/5116-133-0x0000000010000000-0x0000000010012000-memory.dmp

Filesize
72KB

Download
memory/5116-136-0x0000000010000000-0x0000000010012000-memory.dmp

Filesize
72KB

Download
memory/5116-137-0x0000000000EF0000-0x0000000000F02000-memory.dmp

Filesize
72KB

Download