60e2def08b859efdda4ab63fb47a8fb845aaadaa0bb37f65f58d61f123ddf7cd

Analysis

max time kernel
150s
max time network
98s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
19/09/2024, 04:21

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General

Target

ea92ec3ccc6c2777544099283115e1a7_JaffaCakes118.dll
Size

43KB
MD5

ea92ec3ccc6c2777544099283115e1a7
SHA1

ded4fb805c4419b3fed12ef6609dcf56c0786a8c
SHA256

60e2def08b859efdda4ab63fb47a8fb845aaadaa0bb37f65f58d61f123ddf7cd
SHA512

ba63ce20df56d57bc8956e576eb25fee86bb2d81b6f39ba4f03dd21486d04045e6760485f77810fb8fbab190d686502e5b8acc84ac2aa97c0f442981a11d4fc6
SSDEEP

768:TLyQIaMxh9WQ3jzaoEZ8nPLBsN/Xxc4XvvDDBWUtgC/+jT5rTLaI8MwJ7N34Q:nyQLgWQ3ioEZK1sfhXvvD0+gjtXLacoj

Score

7^/10

discovery persistence upx

Malware Config

Signatures

Loads dropped DLL 3 IoCs

pid	Process
4760	rundll32.exe
4760	rundll32.exe
3060	rundll32.exe

UPX packed file 10 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/4760-3-0x0000000010000000-0x0000000010014000-memory.dmp	upx
behavioral2/memory/4760-2-0x0000000010000000-0x0000000010014000-memory.dmp	upx
behavioral2/memory/4760-5-0x0000000010000000-0x0000000010014000-memory.dmp	upx
behavioral2/memory/4760-15-0x0000000010000000-0x0000000010014000-memory.dmp	upx
behavioral2/memory/4760-14-0x0000000002E10000-0x0000000002E24000-memory.dmp	upx
behavioral2/memory/4760-19-0x0000000002E10000-0x0000000002E24000-memory.dmp	upx
behavioral2/memory/3060-26-0x0000000010000000-0x0000000010014000-memory.dmp	upx
behavioral2/memory/3060-27-0x0000000010000000-0x0000000010014000-memory.dmp	upx
behavioral2/memory/3060-28-0x0000000010000000-0x0000000010014000-memory.dmp	upx
behavioral2/memory/3060-29-0x0000000010000000-0x0000000010014000-memory.dmp	upx

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\\byXNeBsR.dll,#1"	rundll32.exe

Drops file in System32 directory 2 IoCs

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

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe

Modifies registry class 4 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{B62B5CE6-A4BF-428D-8A21-47EE1BD90EAC}\InprocServer32\ = "C:\\Windows\\SysWow64\\byXNeBsR.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{B62B5CE6-A4BF-428D-8A21-47EE1BD90EAC}\InprocServer32\ThreadingModel = "Both"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{B62B5CE6-A4BF-428D-8A21-47EE1BD90EAC}	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{B62B5CE6-A4BF-428D-8A21-47EE1BD90EAC}\InprocServer32	rundll32.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4760	rundll32.exe
4760	rundll32.exe
3060	rundll32.exe
3060	rundll32.exe
3060	rundll32.exe
3060	rundll32.exe
3060	rundll32.exe
3060	rundll32.exe
3060	rundll32.exe
3060	rundll32.exe
3060	rundll32.exe
3060	rundll32.exe
3060	rundll32.exe
3060	rundll32.exe
3060	rundll32.exe
3060	rundll32.exe
3060	rundll32.exe
3060	rundll32.exe
3060	rundll32.exe
3060	rundll32.exe
3060	rundll32.exe
3060	rundll32.exe
3060	rundll32.exe
3060	rundll32.exe
3060	rundll32.exe
3060	rundll32.exe
3060	rundll32.exe
3060	rundll32.exe
3060	rundll32.exe
3060	rundll32.exe
3060	rundll32.exe
3060	rundll32.exe
3060	rundll32.exe
3060	rundll32.exe
3060	rundll32.exe
3060	rundll32.exe
3060	rundll32.exe
3060	rundll32.exe
3060	rundll32.exe
3060	rundll32.exe
3060	rundll32.exe
3060	rundll32.exe
3060	rundll32.exe
3060	rundll32.exe
3060	rundll32.exe
3060	rundll32.exe
3060	rundll32.exe
3060	rundll32.exe
3060	rundll32.exe
3060	rundll32.exe
3060	rundll32.exe
3060	rundll32.exe
3060	rundll32.exe
3060	rundll32.exe
3060	rundll32.exe
3060	rundll32.exe
3060	rundll32.exe
3060	rundll32.exe
3060	rundll32.exe
3060	rundll32.exe
3060	rundll32.exe
3060	rundll32.exe
3060	rundll32.exe
3060	rundll32.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
4760	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4760	rundll32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4760	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 3144 wrote to memory of 4760	3144	rundll32.exe	82
PID 3144 wrote to memory of 4760	3144	rundll32.exe	82
PID 3144 wrote to memory of 4760	3144	rundll32.exe	82
PID 4760 wrote to memory of 612	4760	rundll32.exe	5
PID 4760 wrote to memory of 3060	4760	rundll32.exe	91
PID 4760 wrote to memory of 3060	4760	rundll32.exe	91
PID 4760 wrote to memory of 3060	4760	rundll32.exe	91

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

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\ea92ec3ccc6c2777544099283115e1a7_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3144
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\ea92ec3ccc6c2777544099283115e1a7_JaffaCakes118.dll,#1
  2⤵
  - Loads dropped DLL
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: RenamesItself
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4760
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe C:\Windows\system32\byXNeBsR.dll,a
    3⤵
    - Loads dropped DLL
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    - Modifies registry class
    - Suspicious behavior: EnumeratesProcesses
    PID:3060

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

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\SysWOW64\byXNeBsR.dll

Filesize
43KB

MD5
ea92ec3ccc6c2777544099283115e1a7

SHA1
ded4fb805c4419b3fed12ef6609dcf56c0786a8c

SHA256
60e2def08b859efdda4ab63fb47a8fb845aaadaa0bb37f65f58d61f123ddf7cd

SHA512
ba63ce20df56d57bc8956e576eb25fee86bb2d81b6f39ba4f03dd21486d04045e6760485f77810fb8fbab190d686502e5b8acc84ac2aa97c0f442981a11d4fc6

Download Submit
memory/3060-29-0x0000000010000000-0x0000000010014000-memory.dmp

Filesize
80KB

Download
memory/3060-28-0x0000000010000000-0x0000000010014000-memory.dmp

Filesize
80KB

Download
memory/3060-27-0x0000000010000000-0x0000000010014000-memory.dmp

Filesize
80KB

Download
memory/3060-26-0x0000000010000000-0x0000000010014000-memory.dmp

Filesize
80KB

Download
memory/4760-4-0x000000001000E000-0x0000000010013000-memory.dmp

Filesize
20KB

Download
memory/4760-5-0x0000000010000000-0x0000000010014000-memory.dmp

Filesize
80KB

Download
memory/4760-15-0x0000000010000000-0x0000000010014000-memory.dmp

Filesize
80KB

Download
memory/4760-14-0x0000000002E10000-0x0000000002E24000-memory.dmp

Filesize
80KB

Download
memory/4760-16-0x0000000001100000-0x0000000001109000-memory.dmp

Filesize
36KB

Download
memory/4760-17-0x000000001000E000-0x0000000010013000-memory.dmp

Filesize
20KB

Download
memory/4760-19-0x0000000002E10000-0x0000000002E24000-memory.dmp

Filesize
80KB

Download
memory/4760-0-0x0000000010000000-0x0000000010014000-memory.dmp

Filesize
80KB

Download
memory/4760-2-0x0000000010000000-0x0000000010014000-memory.dmp

Filesize
80KB

Download
memory/4760-3-0x0000000010000000-0x0000000010014000-memory.dmp

Filesize
80KB

Download
memory/4760-1-0x0000000001100000-0x0000000001109000-memory.dmp

Filesize
36KB

Download