9acd993cdeb62c0ddfc2051de07fdb6b45b305545fa83541d199531e4f482b98

Analysis

max time kernel
150s
max time network
142s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
22-08-2024 22:28

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

b959399ac73dbf0d6b20085760679bda_JaffaCakes118.exe
Size

56KB
MD5

b959399ac73dbf0d6b20085760679bda
SHA1

daedea641a1906631f489d5134ae7f46a6fbfae2
SHA256

9acd993cdeb62c0ddfc2051de07fdb6b45b305545fa83541d199531e4f482b98
SHA512

efc2b838b5d655cea1f9b3d384321d265b84ed17db47331c382e919d1a978f0c14e5e39b1769b32834adca0c535dc5ab56b6eae0b908ea17bf983918dd64ca2b
SSDEEP

1536:jClgOD2kuqO5Kz1DLzMJ10WEzfmuH7OEz:jClgOD2N35KZzWubbz

Score

8^/10

discovery persistence

Malware Config

Signatures

Server Software Component: Terminal Services DLL 1 TTPs 3 IoCs

persistence

Terminal Services DLL

T1505.005

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Microsoft\Parameters\ServiceDll = "%SystemRoot%\\System32\\bkryyu.dll"	b959399ac73dbf0d6b20085760679bda_JaffaCakes118.exe
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet002\Services\Microsoft\Parameters\ServiceDll = "%SystemRoot%\\System32\\bkryyu.dll"	b959399ac73dbf0d6b20085760679bda_JaffaCakes118.exe
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet003\Services\Microsoft\Parameters\ServiceDll = "%SystemRoot%\\System32\\bkryyu.dll"	b959399ac73dbf0d6b20085760679bda_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
1104	svchost.exe

Loads dropped DLL 2 IoCs

pid	Process
1792	b959399ac73dbf0d6b20085760679bda_JaffaCakes118.exe
1104	svchost.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\00049c03.001	b959399ac73dbf0d6b20085760679bda_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\bkryyu.dll	b959399ac73dbf0d6b20085760679bda_JaffaCakes118.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
3116	1792	WerFault.exe	83
4252	1792	WerFault.exe	83

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	b959399ac73dbf0d6b20085760679bda_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
1104	svchost.exe
1104	svchost.exe
1104	svchost.exe

C:\Users\Admin\AppData\Local\Temp\b959399ac73dbf0d6b20085760679bda_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\b959399ac73dbf0d6b20085760679bda_JaffaCakes118.exe"
1⤵
- Server Software Component: Terminal Services DLL
- Loads dropped DLL
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
PID:1792
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1792 -s 416
  2⤵
  - Program crash
  PID:3116
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1792 -s 140
  2⤵
  - Program crash
  PID:4252

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 1792 -ip 1792
1⤵
PID:1844

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k Microsoft
1⤵
- Deletes itself
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
PID:1104

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 1792 -ip 1792
1⤵
PID:2136

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Server Software Component

T1505

Terminal Services DLL

T1505.005

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Windows\SysWOW64\bkryyu.dll

Filesize
89KB

MD5
1f5a9d9f8fee710d7c24b16702eaaa2f

SHA1
ef05b5b4a86b618a2d33d572f2a57af19e8e859c

SHA256
d2e53d73ebda72463f4f13c822a35349e40dccf5415070b103ef0bf887f030b5

SHA512
5a1a763bcedb8d9a21f1d9f807c29a65c18ef0bf6eae50420ee94d6fc6aa98421490c2f38c3e69e3106943cc515203092f4f2cba45f8c78418db1293e5ab7258

Download Submit
memory/1792-0-0x0000000000400000-0x000000000040E4D8-memory.dmp

Filesize
57KB

Download
memory/1792-1-0x000000000040E000-0x000000000040F000-memory.dmp

Filesize
4KB

Download
memory/1792-9-0x0000000000400000-0x000000000040E4D8-memory.dmp

Filesize
57KB

Download