e09dd0cc3b7b26a2286957fe70e8cbf09f7d80a7b4fc6cec2ea966e20e5611bf

Analysis

max time kernel
149s
max time network
113s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
16/04/2024, 11:04

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General

Target

f35b2e0ba915cfeccb657e3c6f98a8ba_JaffaCakes118.dll
Size

25KB
MD5

f35b2e0ba915cfeccb657e3c6f98a8ba
SHA1

0fd86f52ac93d56591f479e96645caec2716c10d
SHA256

e09dd0cc3b7b26a2286957fe70e8cbf09f7d80a7b4fc6cec2ea966e20e5611bf
SHA512

608e794091a29069a2a2b46940007bb73926d5f05c346fbc8d333ede02b135555dd7d895a358a2cdb957655dc94a145094c5fbd3232b54e9838db49f4bed2e21
SSDEEP

768:uYgQlevpDiSK6pX9B6U9E0G6xEpYHFSFq:lleh9KWHVKJFq

Score

7^/10

persistence

Malware Config

Signatures

Loads dropped DLL 3 IoCs

pid	Process
1456	rundll32.exe
1456	rundll32.exe
968	rundll32.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\MSServer = "rundll32.exe C:\\Windows\\system32\\nnnlmJYQ.dll,#1"	rundll32.exe

Drops file in System32 directory 2 IoCs

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

Modifies registry class 4 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{833AE189-F38C-46B6-B02A-18DBEBB50349}	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{833AE189-F38C-46B6-B02A-18DBEBB50349}\InprocServer32	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{833AE189-F38C-46B6-B02A-18DBEBB50349}\InprocServer32\ = "C:\\Windows\\SysWow64\\nnnlmJYQ.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{833AE189-F38C-46B6-B02A-18DBEBB50349}\InprocServer32\ThreadingModel = "Both"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
1456	rundll32.exe
1456	rundll32.exe
968	rundll32.exe
968	rundll32.exe
968	rundll32.exe
968	rundll32.exe
968	rundll32.exe
968	rundll32.exe
968	rundll32.exe
968	rundll32.exe
968	rundll32.exe
968	rundll32.exe
968	rundll32.exe
968	rundll32.exe
968	rundll32.exe
968	rundll32.exe
968	rundll32.exe
968	rundll32.exe
968	rundll32.exe
968	rundll32.exe
968	rundll32.exe
968	rundll32.exe
968	rundll32.exe
968	rundll32.exe
968	rundll32.exe
968	rundll32.exe
968	rundll32.exe
968	rundll32.exe
968	rundll32.exe
968	rundll32.exe
968	rundll32.exe
968	rundll32.exe
968	rundll32.exe
968	rundll32.exe
968	rundll32.exe
968	rundll32.exe
968	rundll32.exe
968	rundll32.exe
968	rundll32.exe
968	rundll32.exe
968	rundll32.exe
968	rundll32.exe
968	rundll32.exe
968	rundll32.exe
968	rundll32.exe
968	rundll32.exe
968	rundll32.exe
968	rundll32.exe
968	rundll32.exe
968	rundll32.exe
968	rundll32.exe
968	rundll32.exe
968	rundll32.exe
968	rundll32.exe
968	rundll32.exe
968	rundll32.exe
968	rundll32.exe
968	rundll32.exe
968	rundll32.exe
968	rundll32.exe
968	rundll32.exe
968	rundll32.exe
968	rundll32.exe
968	rundll32.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
1456	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1456	rundll32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1456	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 4724 wrote to memory of 1456	4724	rundll32.exe	85
PID 4724 wrote to memory of 1456	4724	rundll32.exe	85
PID 4724 wrote to memory of 1456	4724	rundll32.exe	85
PID 1456 wrote to memory of 612	1456	rundll32.exe	5
PID 1456 wrote to memory of 968	1456	rundll32.exe	97
PID 1456 wrote to memory of 968	1456	rundll32.exe	97
PID 1456 wrote to memory of 968	1456	rundll32.exe	97

C:\Windows\system32\winlogon.exe
winlogon.exe
1⤵
PID:612

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\f35b2e0ba915cfeccb657e3c6f98a8ba_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4724
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\f35b2e0ba915cfeccb657e3c6f98a8ba_JaffaCakes118.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:1456
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe C:\Windows\system32\nnnlmJYQ.dll,a
    3⤵
    - Loads dropped DLL
    - Adds Run key to start application
    - Modifies registry class
    - Suspicious behavior: EnumeratesProcesses
    PID:968

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

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\nnnlmJYQ.dll

Filesize
25KB

MD5
f35b2e0ba915cfeccb657e3c6f98a8ba

SHA1
0fd86f52ac93d56591f479e96645caec2716c10d

SHA256
e09dd0cc3b7b26a2286957fe70e8cbf09f7d80a7b4fc6cec2ea966e20e5611bf

SHA512
608e794091a29069a2a2b46940007bb73926d5f05c346fbc8d333ede02b135555dd7d895a358a2cdb957655dc94a145094c5fbd3232b54e9838db49f4bed2e21

Download Submit
memory/968-20-0x0000000010000000-0x0000000010012000-memory.dmp

Filesize
72KB

Download
memory/968-19-0x0000000010000000-0x0000000010012000-memory.dmp

Filesize
72KB

Download
memory/968-21-0x0000000010000000-0x0000000010012000-memory.dmp

Filesize
72KB

Download
memory/968-22-0x0000000010000000-0x0000000010012000-memory.dmp

Filesize
72KB

Download
memory/1456-0-0x0000000010000000-0x0000000010012000-memory.dmp

Filesize
72KB

Download
memory/1456-1-0x0000000010000000-0x0000000010012000-memory.dmp

Filesize
72KB

Download
memory/1456-2-0x0000000010000000-0x0000000010012000-memory.dmp

Filesize
72KB

Download
memory/1456-9-0x00000000025D0000-0x00000000025E2000-memory.dmp

Filesize
72KB

Download
memory/1456-10-0x00000000025D0000-0x00000000025E2000-memory.dmp

Filesize
72KB

Download
memory/1456-11-0x00000000025D0000-0x00000000025E2000-memory.dmp

Filesize
72KB

Download
memory/1456-12-0x00000000025D0000-0x00000000025E2000-memory.dmp

Filesize
72KB

Download