a39febd188771cdde3ef57eb9fcf422c9d01c95afd2664145906ca120a231ab5

Analysis

max time kernel
95s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
01-01-2025 00:50

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General

Target

JaffaCakes118_4146f629cd05c130cf774f129b372a00.dll
Size

152KB
MD5

4146f629cd05c130cf774f129b372a00
SHA1

b47d8eb4528f24b278f72971c49e07d91409fe03
SHA256

a39febd188771cdde3ef57eb9fcf422c9d01c95afd2664145906ca120a231ab5
SHA512

ff6821be16e5765e41116600e4faa40deaf7e7bf1184494e37b06b8360421c099171056d3b2b7dd1898e101cdc40a548d4dbb88fa2f9e57bf8059c8e6b8f5862
SSDEEP

3072:Un4cV8gf2u41Z5tKlmyUxyIqlKZEtNcmJo2xa:m4y8gOl2IyUMIWvNcZ2

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
4728	rundll32Srv.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\rundll32Srv.exe	rundll32.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000b000000023bc3-3.dat	upx
behavioral2/memory/4728-5-0x0000000000400000-0x000000000042F000-memory.dmp	upx
behavioral2/memory/4728-8-0x0000000000400000-0x000000000042F000-memory.dmp	upx

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	rundll32Srv.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3480 wrote to memory of 1524	3480	rundll32.exe	82
PID 3480 wrote to memory of 1524	3480	rundll32.exe	82
PID 3480 wrote to memory of 1524	3480	rundll32.exe	82
PID 1524 wrote to memory of 4728	1524	rundll32.exe	83
PID 1524 wrote to memory of 4728	1524	rundll32.exe	83
PID 1524 wrote to memory of 4728	1524	rundll32.exe	83

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4146f629cd05c130cf774f129b372a00.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3480
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4146f629cd05c130cf774f129b372a00.dll,#1
  2⤵
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1524
- - C:\Windows\SysWOW64\rundll32Srv.exe
    C:\Windows\SysWOW64\rundll32Srv.exe
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:4728

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

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

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Downloads

C:\Windows\SysWOW64\rundll32Srv.exe

Filesize
61KB

MD5
1e28b93df4dc13ba183d7cac665bc45e

SHA1
9f91ec079b5033516398e65970431602ba51647c

SHA256
e6db1aa577d981ff37dffc63cf7496a94db52e27c035f59983236cf1117becaf

SHA512
f133fd3ce7ddc48f090f3f94c98ea8b3b6ad017fc774c43d691176fe3f18a499de890be3aaaadd36299df41ea0f705a7375a6772409efccd11991bc49e4d7331

Download Submit
memory/1524-0-0x0000000010000000-0x0000000010027000-memory.dmp

Filesize
156KB

Download
memory/4728-5-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4728-6-0x0000000000690000-0x00000000006A0000-memory.dmp

Filesize
64KB

Download
memory/4728-8-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download