b99a416a5a08b7de108c8b45ec7f51a0649f0e607a3fe30be2ec258525e3f330

Analysis

max time kernel
150s
max time network
135s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
01/10/2024, 06:54

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General

Target

04c3f14bd4de5e14230c7ae1201a6ebe_JaffaCakes118.exe
Size

51KB
MD5

04c3f14bd4de5e14230c7ae1201a6ebe
SHA1

50402118335e8672aed6a7ad24d77aa17c8e1cc1
SHA256

b99a416a5a08b7de108c8b45ec7f51a0649f0e607a3fe30be2ec258525e3f330
SHA512

149c4d6b01385e02d729d845dd60b16503c89b9902c94296dcdd56d830f5266465b36ff6e2153ba7eb78aa979be66f02a43e2030022f181d16d95bf0273c633c
SSDEEP

768:M1aBOJ2A4K/HR9oNrwS/PDGUNtyVyXAizAe2Ae4nWQPuu8dCvD1Jn0kavcztnf9:MGo/2bPjeW5EFPvQJvi8F

Score

7^/10

discovery persistence upx

Malware Config

Signatures

Loads dropped DLL 2 IoCs

pid	Process
3828	04c3f14bd4de5e14230c7ae1201a6ebe_JaffaCakes118.exe
1980	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\\iifcCuvV.dll,#1"	rundll32.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\fccdcYqN.dll	04c3f14bd4de5e14230c7ae1201a6ebe_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\fccdcYqN.dll	04c3f14bd4de5e14230c7ae1201a6ebe_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\iifcCuvV.dll	04c3f14bd4de5e14230c7ae1201a6ebe_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\iifcCuvV.dll	04c3f14bd4de5e14230c7ae1201a6ebe_JaffaCakes118.exe

UPX packed file 9 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3828-3-0x0000000000400000-0x0000000000412000-memory.dmp	upx
behavioral2/memory/3828-2-0x0000000000400000-0x0000000000412000-memory.dmp	upx
behavioral2/memory/3828-5-0x0000000000400000-0x0000000000412000-memory.dmp	upx
behavioral2/memory/3828-11-0x0000000010000000-0x0000000010014000-memory.dmp	upx
behavioral2/memory/3828-13-0x0000000010000000-0x0000000010014000-memory.dmp	upx
behavioral2/memory/3828-12-0x0000000010000000-0x0000000010014000-memory.dmp	upx
behavioral2/memory/3828-21-0x0000000010000000-0x0000000010014000-memory.dmp	upx
behavioral2/memory/1980-32-0x0000000010000000-0x0000000010014000-memory.dmp	upx
behavioral2/memory/1980-36-0x0000000010000000-0x0000000010014000-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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	04c3f14bd4de5e14230c7ae1201a6ebe_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe

Modifies registry class 4 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{E9349597-6E81-47F3-B05D-469763764FB7}\InprocServer32	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{E9349597-6E81-47F3-B05D-469763764FB7}\InprocServer32\ = "C:\\Windows\\SysWow64\\iifcCuvV.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{E9349597-6E81-47F3-B05D-469763764FB7}\InprocServer32\ThreadingModel = "Both"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{E9349597-6E81-47F3-B05D-469763764FB7}	rundll32.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
3828	04c3f14bd4de5e14230c7ae1201a6ebe_JaffaCakes118.exe
3828	04c3f14bd4de5e14230c7ae1201a6ebe_JaffaCakes118.exe
1980	rundll32.exe
1980	rundll32.exe
1980	rundll32.exe
1980	rundll32.exe
1980	rundll32.exe
1980	rundll32.exe
1980	rundll32.exe
1980	rundll32.exe
1980	rundll32.exe
1980	rundll32.exe
1980	rundll32.exe
1980	rundll32.exe
1980	rundll32.exe
1980	rundll32.exe
1980	rundll32.exe
1980	rundll32.exe
1980	rundll32.exe
1980	rundll32.exe
1980	rundll32.exe
1980	rundll32.exe
1980	rundll32.exe
1980	rundll32.exe
1980	rundll32.exe
1980	rundll32.exe
1980	rundll32.exe
1980	rundll32.exe
1980	rundll32.exe
1980	rundll32.exe
1980	rundll32.exe
1980	rundll32.exe
1980	rundll32.exe
1980	rundll32.exe
1980	rundll32.exe
1980	rundll32.exe
1980	rundll32.exe
1980	rundll32.exe
1980	rundll32.exe
1980	rundll32.exe
1980	rundll32.exe
1980	rundll32.exe
1980	rundll32.exe
1980	rundll32.exe
1980	rundll32.exe
1980	rundll32.exe
1980	rundll32.exe
1980	rundll32.exe
1980	rundll32.exe
1980	rundll32.exe
1980	rundll32.exe
1980	rundll32.exe
1980	rundll32.exe
1980	rundll32.exe
1980	rundll32.exe
1980	rundll32.exe
1980	rundll32.exe
1980	rundll32.exe
1980	rundll32.exe
1980	rundll32.exe
1980	rundll32.exe
1980	rundll32.exe
1980	rundll32.exe
1980	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3828	04c3f14bd4de5e14230c7ae1201a6ebe_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3828	04c3f14bd4de5e14230c7ae1201a6ebe_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 3828 wrote to memory of 616	3828	04c3f14bd4de5e14230c7ae1201a6ebe_JaffaCakes118.exe	5
PID 3828 wrote to memory of 1980	3828	04c3f14bd4de5e14230c7ae1201a6ebe_JaffaCakes118.exe	90
PID 3828 wrote to memory of 1980	3828	04c3f14bd4de5e14230c7ae1201a6ebe_JaffaCakes118.exe	90
PID 3828 wrote to memory of 1980	3828	04c3f14bd4de5e14230c7ae1201a6ebe_JaffaCakes118.exe	90
PID 3828 wrote to memory of 608	3828	04c3f14bd4de5e14230c7ae1201a6ebe_JaffaCakes118.exe	91
PID 3828 wrote to memory of 608	3828	04c3f14bd4de5e14230c7ae1201a6ebe_JaffaCakes118.exe	91
PID 3828 wrote to memory of 608	3828	04c3f14bd4de5e14230c7ae1201a6ebe_JaffaCakes118.exe	91

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

C:\Users\Admin\AppData\Local\Temp\04c3f14bd4de5e14230c7ae1201a6ebe_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\04c3f14bd4de5e14230c7ae1201a6ebe_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:3828
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Windows\system32\iifcCuvV.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:1980
- 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\04c3f14bd4de5e14230c7ae1201a6ebe_JaffaCakes118.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:608

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\fccdcYqN.dll

Filesize
33KB

MD5
5314a8be257952f36f68e2714aa78f76

SHA1
a7268db10d9a939dff5bd9193b0e576c6a19bfed

SHA256
39251d5a5d25bf964f0ee4eeb1092a78358df6b33708de0bb28fc8a68d5f15a0

SHA512
cd8cfef54e7e0cb1e3aba043ed92f2817b86611872113b895a1f886ab2dc81cf723853ac0da88a85d68270aa3e99b8ee976295185140cfacac6948960cc21848

Download Submit
memory/1980-36-0x0000000010000000-0x0000000010014000-memory.dmp

Filesize
80KB

Download
memory/1980-35-0x0000000001080000-0x0000000001081000-memory.dmp

Filesize
4KB

Download
memory/1980-32-0x0000000010000000-0x0000000010014000-memory.dmp

Filesize
80KB

Download
memory/1980-33-0x0000000001080000-0x0000000001081000-memory.dmp

Filesize
4KB

Download
memory/1980-34-0x000000001000E000-0x0000000010013000-memory.dmp

Filesize
20KB

Download
memory/3828-13-0x0000000010000000-0x0000000010014000-memory.dmp

Filesize
80KB

Download
memory/3828-0-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/3828-12-0x0000000010000000-0x0000000010014000-memory.dmp

Filesize
80KB

Download
memory/3828-18-0x00000000005C0000-0x00000000005CB000-memory.dmp

Filesize
44KB

Download
memory/3828-19-0x0000000000408000-0x0000000000411000-memory.dmp

Filesize
36KB

Download
memory/3828-21-0x0000000010000000-0x0000000010014000-memory.dmp

Filesize
80KB

Download
memory/3828-11-0x0000000010000000-0x0000000010014000-memory.dmp

Filesize
80KB

Download
memory/3828-5-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/3828-4-0x0000000000408000-0x0000000000411000-memory.dmp

Filesize
36KB

Download
memory/3828-2-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/3828-3-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/3828-1-0x00000000005C0000-0x00000000005CB000-memory.dmp

Filesize
44KB

Download