405a520c42e4fc6118155c61e0ad968bd0665adeba0d1f06d9fe486e30ec52a6

Analysis

max time kernel
150s
max time network
136s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
19/08/2024, 14:28

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General

Target

ab63eb18dfc215c912b5517994e157ed_JaffaCakes118.exe
Size

47KB
MD5

ab63eb18dfc215c912b5517994e157ed
SHA1

ab77b5df30adf53fa0ed645508ccd0a2b1c5aa09
SHA256

405a520c42e4fc6118155c61e0ad968bd0665adeba0d1f06d9fe486e30ec52a6
SHA512

b91a1e4f87e2289467a99194b2fd99637958fa221a48646c868352fdbd320d5db64e981923e71819aaee042aca65148467bef8875fef5de193ca68d696203731
SSDEEP

768:qVRLk0VT6L7i8i9GaKQeK8fWpuK+JxHqTBYuccHNoQf406:qXvVmU9TeKNeCCcHfW

Score

7^/10

discovery persistence

Malware Config

Signatures

Loads dropped DLL 2 IoCs

pid	Process
3316	ab63eb18dfc215c912b5517994e157ed_JaffaCakes118.exe
3932	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\\yayvUOgG.dll,#1"	rundll32.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\vtUnnmKa.dll	ab63eb18dfc215c912b5517994e157ed_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\vtUnnmKa.dll	ab63eb18dfc215c912b5517994e157ed_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\yayvUOgG.dll	ab63eb18dfc215c912b5517994e157ed_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\yayvUOgG.dll	ab63eb18dfc215c912b5517994e157ed_JaffaCakes118.exe

System Location Discovery: System Language Discovery 1 TTPs 3 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	ab63eb18dfc215c912b5517994e157ed_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Modifies registry class 4 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{31FC1F5B-A825-4335-827F-9A604838884A}\InprocServer32\ = "C:\\Windows\\SysWow64\\yayvUOgG.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{31FC1F5B-A825-4335-827F-9A604838884A}\InprocServer32\ThreadingModel = "Both"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{31FC1F5B-A825-4335-827F-9A604838884A}	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{31FC1F5B-A825-4335-827F-9A604838884A}\InprocServer32	rundll32.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
3316	ab63eb18dfc215c912b5517994e157ed_JaffaCakes118.exe
3316	ab63eb18dfc215c912b5517994e157ed_JaffaCakes118.exe
3932	rundll32.exe
3932	rundll32.exe
3932	rundll32.exe
3932	rundll32.exe
3932	rundll32.exe
3932	rundll32.exe
3932	rundll32.exe
3932	rundll32.exe
3932	rundll32.exe
3932	rundll32.exe
3932	rundll32.exe
3932	rundll32.exe
3932	rundll32.exe
3932	rundll32.exe
3932	rundll32.exe
3932	rundll32.exe
3932	rundll32.exe
3932	rundll32.exe
3932	rundll32.exe
3932	rundll32.exe
3932	rundll32.exe
3932	rundll32.exe
3932	rundll32.exe
3932	rundll32.exe
3932	rundll32.exe
3932	rundll32.exe
3932	rundll32.exe
3932	rundll32.exe
3932	rundll32.exe
3932	rundll32.exe
3932	rundll32.exe
3932	rundll32.exe
3932	rundll32.exe
3932	rundll32.exe
3932	rundll32.exe
3932	rundll32.exe
3932	rundll32.exe
3932	rundll32.exe
3932	rundll32.exe
3932	rundll32.exe
3932	rundll32.exe
3932	rundll32.exe
3932	rundll32.exe
3932	rundll32.exe
3932	rundll32.exe
3932	rundll32.exe
3932	rundll32.exe
3932	rundll32.exe
3932	rundll32.exe
3932	rundll32.exe
3932	rundll32.exe
3932	rundll32.exe
3932	rundll32.exe
3932	rundll32.exe
3932	rundll32.exe
3932	rundll32.exe
3932	rundll32.exe
3932	rundll32.exe
3932	rundll32.exe
3932	rundll32.exe
3932	rundll32.exe
3932	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3316	ab63eb18dfc215c912b5517994e157ed_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3316	ab63eb18dfc215c912b5517994e157ed_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 3316 wrote to memory of 616	3316	ab63eb18dfc215c912b5517994e157ed_JaffaCakes118.exe	5
PID 3316 wrote to memory of 3932	3316	ab63eb18dfc215c912b5517994e157ed_JaffaCakes118.exe	104
PID 3316 wrote to memory of 3932	3316	ab63eb18dfc215c912b5517994e157ed_JaffaCakes118.exe	104
PID 3316 wrote to memory of 3932	3316	ab63eb18dfc215c912b5517994e157ed_JaffaCakes118.exe	104
PID 3316 wrote to memory of 1964	3316	ab63eb18dfc215c912b5517994e157ed_JaffaCakes118.exe	105
PID 3316 wrote to memory of 1964	3316	ab63eb18dfc215c912b5517994e157ed_JaffaCakes118.exe	105
PID 3316 wrote to memory of 1964	3316	ab63eb18dfc215c912b5517994e157ed_JaffaCakes118.exe	105

C:\Windows\system32\winlogon.exe
winlogon.exe
1⤵
PID:616

C:\Users\Admin\AppData\Local\Temp\ab63eb18dfc215c912b5517994e157ed_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\ab63eb18dfc215c912b5517994e157ed_JaffaCakes118.exe"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3316
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Windows\system32\yayvUOgG.dll,a
  2⤵
  - Loads dropped DLL
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  PID:3932
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\removalfile.bat "C:\Users\Admin\AppData\Local\Temp\ab63eb18dfc215c912b5517994e157ed_JaffaCakes118.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1964

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=2184,i,3210801877307184477,8078594481454001567,262144 --variations-seed-version --mojo-platform-channel-handle=4236 /prefetch:8
1⤵
PID:672

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\removalfile.bat

Filesize
43B

MD5
9a7ef09167a6f4433681b94351509043

SHA1
259b1375ed8e84943ca1d42646bb416325c89e12

SHA256
d5739a0510d89da572eb0b0d394d4fb4dd361cd9ee0144b9b31c590df93c3be7

SHA512
96b84cd88a0e4b7c1122af3ed6ce5edf0a9a4e9bf79575eadfac16b2c46f1278d57755d29f21d7c6dcb4403be24b7ac7da4837c6cc9c602342a8f2b8e54883df

Download Submit
C:\Windows\SysWOW64\vtUnnmKa.dll

Filesize
33KB

MD5
c138275140fa2473ca86a2f27a3e99f2

SHA1
f2657bc247e67920223f59f8e75d3dbbd7259cb4

SHA256
628a10e6633a34abe28f91608f5a7ad945b11b827440d5ed52a18d30de74690c

SHA512
c4a734b960e390260de808034a815270cf77038cd541adc44f86ca919e8b73d89d0fae713b42fcc442e6f318a4f5cb7d3d8cd2a186184c7e31190514ee3ba0fa

Download Submit
memory/3316-0-0x0000000000570000-0x0000000000575000-memory.dmp

Filesize
20KB

Download
memory/3316-1-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/3316-11-0x0000000000570000-0x0000000000575000-memory.dmp

Filesize
20KB

Download
memory/3316-13-0x0000000010000000-0x0000000010010000-memory.dmp

Filesize
64KB

Download
memory/3932-22-0x0000000010000000-0x0000000010010000-memory.dmp

Filesize
64KB

Download
memory/3932-21-0x00000000003E0000-0x00000000003E5000-memory.dmp

Filesize
20KB

Download
memory/3932-24-0x00000000003E0000-0x00000000003E5000-memory.dmp

Filesize
20KB

Download
memory/3932-25-0x0000000010000000-0x0000000010010000-memory.dmp

Filesize
64KB

Download