a44acceafef289327661bab33ebc7508f5b6a25c626f4a02d56f570e938dd72d

Analysis

max time kernel
150s
max time network
138s
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, 09:36

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General

Target

fe40c419302f54cca686fdf2ba0ffb7f_JaffaCakes118.dll
Size

111KB
MD5

fe40c419302f54cca686fdf2ba0ffb7f
SHA1

c1ffe9d45a1547ed5bf025c135acc34d5d328679
SHA256

a44acceafef289327661bab33ebc7508f5b6a25c626f4a02d56f570e938dd72d
SHA512

b6ec9b388d572d157452defa32461b9db6cf2f681456d50c6b8aa497e55cc36df31553939f3d9459957960ed3f9dc25aad0464f3fd4df783ea304fabbbc3c628
SSDEEP

1536:+ZFUCATS4mfJKHXWRNaw59dbDgL8ItRKiMRRYSTqD4Ip:+4bVKqKPYSM4c

Score

7^/10

defense_evasion discovery privilege_escalation upx

Malware Config

Signatures

Loads dropped DLL 1 IoCs

pid	Process
3360	rundll32.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 3 IoCs

pid	Process
3360	rundll32.exe
3360	rundll32.exe
3360	rundll32.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2680-0-0x0000000010000000-0x000000001001E000-memory.dmp	upx
behavioral2/files/0x0008000000023619-4.dat	upx
behavioral2/memory/2680-6-0x0000000010000000-0x000000001001E000-memory.dmp	upx
behavioral2/memory/3360-7-0x0000000010000000-0x000000001001E000-memory.dmp	upx

Drops file in Windows directory 2 IoCs

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

Access Token Manipulation: Create Process with Token 1 TTPs 1 IoCs

defense_evasion privilege_escalation

Create Process with Token

T1134.002

pid	Process
3360	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 5 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{fbeb8a05-beee-4442-804e-409d6c4515e9}\InProcServer32	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{fbeb8a05-beee-4442-804e-409d6c4515e9}	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{7B3AC3FA-B695-41b6-BAA0-860EB5EB6FD6}	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{7B3AC3FA-B695-41b6-BAA0-860EB5EB6FD6}\{F69EB73C-700A-42c9-8F9D-E8C4ABC27EF3} = "fe40c419302f54cca686fdf2ba0ffb7f_JaffaCakes118.dll,1308893781,1200269931,-1814625877"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
3360	rundll32.exe
3360	rundll32.exe
3360	rundll32.exe
3360	rundll32.exe
3360	rundll32.exe
3360	rundll32.exe
3360	rundll32.exe
3360	rundll32.exe
3360	rundll32.exe
3360	rundll32.exe
3360	rundll32.exe
3360	rundll32.exe
3360	rundll32.exe
3360	rundll32.exe
3360	rundll32.exe
3360	rundll32.exe
3360	rundll32.exe
3360	rundll32.exe
3360	rundll32.exe
3360	rundll32.exe
3360	rundll32.exe
3360	rundll32.exe
3360	rundll32.exe
3360	rundll32.exe
3360	rundll32.exe
3360	rundll32.exe
3360	rundll32.exe
3360	rundll32.exe
3360	rundll32.exe
3360	rundll32.exe
3360	rundll32.exe
3360	rundll32.exe
3360	rundll32.exe
3360	rundll32.exe
3360	rundll32.exe
3360	rundll32.exe
3360	rundll32.exe
3360	rundll32.exe
3360	rundll32.exe
3360	rundll32.exe
3360	rundll32.exe
3360	rundll32.exe
3360	rundll32.exe
3360	rundll32.exe
3360	rundll32.exe
3360	rundll32.exe
3360	rundll32.exe
3360	rundll32.exe
3360	rundll32.exe
3360	rundll32.exe
3360	rundll32.exe
3360	rundll32.exe
3360	rundll32.exe
3360	rundll32.exe
3360	rundll32.exe
3360	rundll32.exe
3360	rundll32.exe
3360	rundll32.exe
3360	rundll32.exe
3360	rundll32.exe
3360	rundll32.exe
3360	rundll32.exe
3360	rundll32.exe
3360	rundll32.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3396 wrote to memory of 2680	3396	rundll32.exe	89
PID 3396 wrote to memory of 2680	3396	rundll32.exe	89
PID 3396 wrote to memory of 2680	3396	rundll32.exe	89
PID 2680 wrote to memory of 3360	2680	rundll32.exe	90
PID 2680 wrote to memory of 3360	2680	rundll32.exe	90
PID 2680 wrote to memory of 3360	2680	rundll32.exe	90

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\fe40c419302f54cca686fdf2ba0ffb7f_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3396
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\fe40c419302f54cca686fdf2ba0ffb7f_JaffaCakes118.dll,#1
  2⤵
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2680
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32 "C:\Windows\msremotex.dll",_RunAs@16
    3⤵
    - Loads dropped DLL
    - Suspicious use of NtSetInformationThreadHideFromDebugger
    - Access Token Manipulation: Create Process with Token
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    PID:3360

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=4452,i,15336851255456239337,16379811035920490645,262144 --variations-seed-version --mojo-platform-channel-handle=4012 /prefetch:8
1⤵
PID:4260

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Access Token Manipulation

T1134

Create Process with Token

T1134.002

Defense Evasion

Access Token Manipulation

T1134

Create Process with Token

T1134.002

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\msremotex.dll

Filesize
111KB

MD5
fe40c419302f54cca686fdf2ba0ffb7f

SHA1
c1ffe9d45a1547ed5bf025c135acc34d5d328679

SHA256
a44acceafef289327661bab33ebc7508f5b6a25c626f4a02d56f570e938dd72d

SHA512
b6ec9b388d572d157452defa32461b9db6cf2f681456d50c6b8aa497e55cc36df31553939f3d9459957960ed3f9dc25aad0464f3fd4df783ea304fabbbc3c628

Download Submit
memory/2680-0-0x0000000010000000-0x000000001001E000-memory.dmp

Filesize
120KB

Download
memory/2680-6-0x0000000010000000-0x000000001001E000-memory.dmp

Filesize
120KB

Download
memory/3360-7-0x0000000010000000-0x000000001001E000-memory.dmp

Filesize
120KB

Download