787f92840cefb9cc6cdfd050e1585d6faccf46ffbc618c347b059339b2516f82

Analysis

max time kernel
142s
max time network
128s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
30/10/2022, 18:06

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General

Target

787f92840cefb9cc6cdfd050e1585d6faccf46ffbc618c347b059339b2516f82.exe
Size

124KB
MD5

834b5880209a561a83cf9a8f6166ccd9
SHA1

db459a0ed98a6a803efb954e5ea525966541a4f2
SHA256

787f92840cefb9cc6cdfd050e1585d6faccf46ffbc618c347b059339b2516f82
SHA512

d10ffcc5eec993123bcfe63c683160e362c79739560a5e883702d51d4ceee5b6e1b96147a0e035ef0ffe47473439c30c252c02f466bf31e57d535035893d0cc7
SSDEEP

1536:pNos4ZBjxaPhXv5wmTKTJMPpmn25vPp6xCoJ3fb7C:Dotcv5wqIn25v5ifbO

Score

8^/10

persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
4932	nujiifaa.exe

Loads dropped DLL 1 IoCs

pid	Process
4932	nujiifaa.exe

Adds Run key to start application 2 TTPs 1 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\system = "C:\\Windows\\system32\\system.exe"	nujiifaa.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\nujiifaa.exe	787f92840cefb9cc6cdfd050e1585d6faccf46ffbc618c347b059339b2516f82.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3040	787f92840cefb9cc6cdfd050e1585d6faccf46ffbc618c347b059339b2516f82.exe
3040	787f92840cefb9cc6cdfd050e1585d6faccf46ffbc618c347b059339b2516f82.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
3040	787f92840cefb9cc6cdfd050e1585d6faccf46ffbc618c347b059339b2516f82.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3040 wrote to memory of 4528	3040	787f92840cefb9cc6cdfd050e1585d6faccf46ffbc618c347b059339b2516f82.exe	80
PID 3040 wrote to memory of 4528	3040	787f92840cefb9cc6cdfd050e1585d6faccf46ffbc618c347b059339b2516f82.exe	80
PID 3040 wrote to memory of 4528	3040	787f92840cefb9cc6cdfd050e1585d6faccf46ffbc618c347b059339b2516f82.exe	80
PID 4528 wrote to memory of 4932	4528	cmd.exe	82
PID 4528 wrote to memory of 4932	4528	cmd.exe	82
PID 4528 wrote to memory of 4932	4528	cmd.exe	82

C:\Users\Admin\AppData\Local\Temp\787f92840cefb9cc6cdfd050e1585d6faccf46ffbc618c347b059339b2516f82.exe
"C:\Users\Admin\AppData\Local\Temp\787f92840cefb9cc6cdfd050e1585d6faccf46ffbc618c347b059339b2516f82.exe"
1⤵
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: RenamesItself
- Suspicious use of WriteProcessMemory
PID:3040
- C:\Windows\SysWOW64\cmd.exe
  cmd /c C:\Windows\system32\nujiifaa.exe
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4528
- - C:\Windows\SysWOW64\nujiifaa.exe
    C:\Windows\system32\nujiifaa.exe
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Adds Run key to start application
    PID:4932

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:\Users\Admin\AppData\Local\Temp\AD3C.tmp

Filesize
4.3MB

MD5
6c7cdd25c2cb0073306eb22aebfc663f

SHA1
a1eba8ab49272b9852fe6a543677e8af36271248

SHA256
58280e3572333f97a7cf9f33e8d31dc26a98b6535965ebd0bde82249fc9bf705

SHA512
17344e07b9e9b2cd6ae4237d7f310732462f9cbb8656883607d7a1a4090e869265f92a6da1718dee50b1375b91583de60c6bd9e7e8db6b6e45e33f4b894365d6

Download Submit
C:\Windows\SysWOW64\nujiifaa.exe

Filesize
46KB

MD5
d95e464236547d09729acf432377a32f

SHA1
0ea5b827656c1927fe9cdba258b8eb9959ebb4b4

SHA256
4befb756c7f98bc5ea05f99b9f6640d903693d0acca78ea755f21913f16aefee

SHA512
2b4757009b794a3bb95617c13242b86ab65dd3f77bfffe6c3a592cb815fff1468b9c82cda04f4bd71d3d2f373d3c506ca53766aea00c6970e3fe97b2e0d8c123

Download Submit
C:\Windows\SysWOW64\nujiifaa.exe

Filesize
46KB

MD5
d95e464236547d09729acf432377a32f

SHA1
0ea5b827656c1927fe9cdba258b8eb9959ebb4b4

SHA256
4befb756c7f98bc5ea05f99b9f6640d903693d0acca78ea755f21913f16aefee

SHA512
2b4757009b794a3bb95617c13242b86ab65dd3f77bfffe6c3a592cb815fff1468b9c82cda04f4bd71d3d2f373d3c506ca53766aea00c6970e3fe97b2e0d8c123

Download Submit