f5ee06f5f6aca34932acb500b749af31b4f4f401ea3b7380f6c53b9e5347fa76

Analysis

max time kernel
150s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
29/09/2024, 05:41

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General

Target

fde68f476b9bd89507b36bf4efa495cb_JaffaCakes118.exe
Size

70KB
MD5

fde68f476b9bd89507b36bf4efa495cb
SHA1

a6912915aa4dc671059828056f929b9f8cf9d0a0
SHA256

f5ee06f5f6aca34932acb500b749af31b4f4f401ea3b7380f6c53b9e5347fa76
SHA512

e69da242cb32bfb122c99e314e595779e8b94f578a6b9cb55b5013f431866f8418af52635f1a8a731728318a030b9dfa195b62926222d37f95c336701a184226
SSDEEP

1536:1r/2MNkGu7BrlxwIAWjIyn62nR8Q3lSSZjg:13kGqBroIAWEQ622O8H

Score

7^/10

discovery persistence upx

Malware Config

Signatures

Loads dropped DLL 2 IoCs

pid	Process
1344	fde68f476b9bd89507b36bf4efa495cb_JaffaCakes118.exe
2208	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\\tuvVMeCt.dll,#1"	rundll32.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\xxywUNHY.dll	fde68f476b9bd89507b36bf4efa495cb_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\tuvVMeCt.dll	fde68f476b9bd89507b36bf4efa495cb_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\tuvVMeCt.dll	fde68f476b9bd89507b36bf4efa495cb_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\xxywUNHY.dll	fde68f476b9bd89507b36bf4efa495cb_JaffaCakes118.exe

UPX packed file 9 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1344-1-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1344-2-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1344-5-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1344-11-0x0000000010000000-0x0000000010014000-memory.dmp	upx
behavioral2/memory/1344-13-0x0000000010000000-0x0000000010014000-memory.dmp	upx
behavioral2/memory/1344-12-0x0000000010000000-0x0000000010014000-memory.dmp	upx
behavioral2/memory/1344-20-0x0000000010000000-0x0000000010014000-memory.dmp	upx
behavioral2/memory/2208-30-0x0000000010000000-0x0000000010014000-memory.dmp	upx
behavioral2/memory/2208-35-0x0000000010000000-0x0000000010014000-memory.dmp	upx

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	fde68f476b9bd89507b36bf4efa495cb_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
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{E538488B-36AB-42FF-8498-271810C9C599}	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{E538488B-36AB-42FF-8498-271810C9C599}\InprocServer32	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{E538488B-36AB-42FF-8498-271810C9C599}\InprocServer32\ = "C:\\Windows\\SysWow64\\tuvVMeCt.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{E538488B-36AB-42FF-8498-271810C9C599}\InprocServer32\ThreadingModel = "Both"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
1344	fde68f476b9bd89507b36bf4efa495cb_JaffaCakes118.exe
1344	fde68f476b9bd89507b36bf4efa495cb_JaffaCakes118.exe
2208	rundll32.exe
2208	rundll32.exe
2208	rundll32.exe
2208	rundll32.exe
2208	rundll32.exe
2208	rundll32.exe
2208	rundll32.exe
2208	rundll32.exe
2208	rundll32.exe
2208	rundll32.exe
2208	rundll32.exe
2208	rundll32.exe
2208	rundll32.exe
2208	rundll32.exe
2208	rundll32.exe
2208	rundll32.exe
2208	rundll32.exe
2208	rundll32.exe
2208	rundll32.exe
2208	rundll32.exe
2208	rundll32.exe
2208	rundll32.exe
2208	rundll32.exe
2208	rundll32.exe
2208	rundll32.exe
2208	rundll32.exe
2208	rundll32.exe
2208	rundll32.exe
2208	rundll32.exe
2208	rundll32.exe
2208	rundll32.exe
2208	rundll32.exe
2208	rundll32.exe
2208	rundll32.exe
2208	rundll32.exe
2208	rundll32.exe
2208	rundll32.exe
2208	rundll32.exe
2208	rundll32.exe
2208	rundll32.exe
2208	rundll32.exe
2208	rundll32.exe
2208	rundll32.exe
2208	rundll32.exe
2208	rundll32.exe
2208	rundll32.exe
2208	rundll32.exe
2208	rundll32.exe
2208	rundll32.exe
2208	rundll32.exe
2208	rundll32.exe
2208	rundll32.exe
2208	rundll32.exe
2208	rundll32.exe
2208	rundll32.exe
2208	rundll32.exe
2208	rundll32.exe
2208	rundll32.exe
2208	rundll32.exe
2208	rundll32.exe
2208	rundll32.exe
2208	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1344	fde68f476b9bd89507b36bf4efa495cb_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1344	fde68f476b9bd89507b36bf4efa495cb_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1344 wrote to memory of 616	1344	fde68f476b9bd89507b36bf4efa495cb_JaffaCakes118.exe	5
PID 1344 wrote to memory of 2208	1344	fde68f476b9bd89507b36bf4efa495cb_JaffaCakes118.exe	90
PID 1344 wrote to memory of 2208	1344	fde68f476b9bd89507b36bf4efa495cb_JaffaCakes118.exe	90
PID 1344 wrote to memory of 2208	1344	fde68f476b9bd89507b36bf4efa495cb_JaffaCakes118.exe	90
PID 1344 wrote to memory of 4456	1344	fde68f476b9bd89507b36bf4efa495cb_JaffaCakes118.exe	91
PID 1344 wrote to memory of 4456	1344	fde68f476b9bd89507b36bf4efa495cb_JaffaCakes118.exe	91
PID 1344 wrote to memory of 4456	1344	fde68f476b9bd89507b36bf4efa495cb_JaffaCakes118.exe	91

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

C:\Users\Admin\AppData\Local\Temp\fde68f476b9bd89507b36bf4efa495cb_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\fde68f476b9bd89507b36bf4efa495cb_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:1344
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Windows\system32\tuvVMeCt.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:2208
- 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\fde68f476b9bd89507b36bf4efa495cb_JaffaCakes118.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4456

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

Filesize
43B

MD5
9a7ef09167a6f4433681b94351509043

SHA1
259b1375ed8e84943ca1d42646bb416325c89e12

SHA256
d5739a0510d89da572eb0b0d394d4fb4dd361cd9ee0144b9b31c590df93c3be7

SHA512
96b84cd88a0e4b7c1122af3ed6ce5edf0a9a4e9bf79575eadfac16b2c46f1278d57755d29f21d7c6dcb4403be24b7ac7da4837c6cc9c602342a8f2b8e54883df

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

Filesize
42KB

MD5
873274d8c4e1c4a65d87ad02539169c1

SHA1
a28c978174281441b90f0a23487360c3681dd7be

SHA256
075504340ff461ce48a078429058d11cb57ef03dbb9addf6ec0a7b9d29d5e856

SHA512
e60a074d6982f6a22edaeafbbb7d8cf32610e25295520b27459f6ba1bbd20e8e2fda9a10142e554b969f69092418f0946e343ff9af1d756daf093ed51fb89661

Download Submit
memory/1344-12-0x0000000010000000-0x0000000010014000-memory.dmp

Filesize
80KB

Download
memory/1344-1-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1344-4-0x0000000000406000-0x0000000000411000-memory.dmp

Filesize
44KB

Download
memory/1344-5-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1344-11-0x0000000010000000-0x0000000010014000-memory.dmp

Filesize
80KB

Download
memory/1344-13-0x0000000010000000-0x0000000010014000-memory.dmp

Filesize
80KB

Download
memory/1344-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1344-2-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1344-18-0x0000000000406000-0x0000000000411000-memory.dmp

Filesize
44KB

Download
memory/1344-20-0x0000000010000000-0x0000000010014000-memory.dmp

Filesize
80KB

Download
memory/1344-3-0x00000000006C0000-0x00000000006CF000-memory.dmp

Filesize
60KB

Download
memory/2208-30-0x0000000010000000-0x0000000010014000-memory.dmp

Filesize
80KB

Download
memory/2208-32-0x000000001000E000-0x0000000010013000-memory.dmp

Filesize
20KB

Download
memory/2208-31-0x0000000000550000-0x0000000000551000-memory.dmp

Filesize
4KB

Download
memory/2208-34-0x0000000000550000-0x0000000000551000-memory.dmp

Filesize
4KB

Download
memory/2208-35-0x0000000010000000-0x0000000010014000-memory.dmp

Filesize
80KB

Download