c2a671029b88c8a8f789234157787ec1e90743458a3cda8177daec13322f2115

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
23-06-2024 23:37

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General

Target

04609dfbda485d69c8e6503953c58973_JaffaCakes118.dll
Size

236KB
MD5

04609dfbda485d69c8e6503953c58973
SHA1

9272fe6e2e89a771574af69ecfeaf31961b05988
SHA256

c2a671029b88c8a8f789234157787ec1e90743458a3cda8177daec13322f2115
SHA512

2f23e094dbd4ea2db455f6b06aea0e6cde1d101f86e2df796fed4f2dd9b295fbf4e9fdb7686777e9f1530e7e3db8f935cdb56740358a7b6cb770ad5d51d5ea7c
SSDEEP

1536:Iguo2K86vta10RJQYPIHL+D5IWhxRh/Ci4ucg3/+k5ltr+DRPG8Gz7wk+cQvMs:Go256vS0RJAL+lHPKi40+66iwkD0n

Score

10^/10

persistence

Malware Config

Signatures

Adds autorun key to be loaded by Explorer.exe on startup 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad\hzlqm = "{b1fc0193-3974-8ec9-4a85-3974891b16b3}"	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
2228	rundll32.exe

Drops file in System32 directory 4 IoCs

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

Modifies registry class 5 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{b1fc0193-3974-8ec9-4a85-3974891b16b3}\InprocServer32\ = "C:\\Windows\\SysWow64\\cuglh.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{b1fc0193-3974-8ec9-4a85-3974891b16b3}\InprocServer32\ThreadingModel = "Apartment"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{b1fc0193-3974-8ec9-4a85-3974891b16b3}	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{b1fc0193-3974-8ec9-4a85-3974891b16b3}\	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{b1fc0193-3974-8ec9-4a85-3974891b16b3}\InprocServer32	rundll32.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2228	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2228	rundll32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2228	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 3028 wrote to memory of 2228	3028	rundll32.exe	28
PID 3028 wrote to memory of 2228	3028	rundll32.exe	28
PID 3028 wrote to memory of 2228	3028	rundll32.exe	28
PID 3028 wrote to memory of 2228	3028	rundll32.exe	28
PID 3028 wrote to memory of 2228	3028	rundll32.exe	28
PID 3028 wrote to memory of 2228	3028	rundll32.exe	28
PID 3028 wrote to memory of 2228	3028	rundll32.exe	28

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\04609dfbda485d69c8e6503953c58973_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3028
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\04609dfbda485d69c8e6503953c58973_JaffaCakes118.dll,#1
  2⤵
  - Adds autorun key to be loaded by Explorer.exe on startup
  - Loads dropped DLL
  - Drops file in System32 directory
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:2228

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

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Downloads

\Windows\SysWOW64\umydz.dll

Filesize
625KB

MD5
95e2376b3323f062eb562b8586d0f14a

SHA1
453d4c3bf4a489433b593420a37bbffb7749875a

SHA256
bd3fa8750123d00aa0967fba44372c46ea002681da9c9b77a4f9261553e26017

SHA512
b898603d07a49237e4dfc6872d5caa7616bae1258926f10e66c4d3f0d81cccefac1e844395b65bb1f308fbc022061b52e51f60658d0a546c04b365b3428cc87d

Download Submit
memory/2228-0-0x0000000000260000-0x00000000002A4000-memory.dmp

Filesize
272KB

Download
memory/2228-1-0x0000000000261000-0x0000000000268000-memory.dmp

Filesize
28KB

Download
memory/2228-7-0x0000000000260000-0x00000000002A4000-memory.dmp

Filesize
272KB

Download
memory/2228-10-0x0000000000260000-0x00000000002A4000-memory.dmp

Filesize
272KB

Download
memory/2228-11-0x0000000000260000-0x00000000002A4000-memory.dmp

Filesize
272KB

Download