b9c019137bff3c55665847df4cec2707aae60f69a7e19a4eba963633caacc764

Analysis

max time kernel
93s
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 07:53

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General

Target

JaffaCakes118_4cffe33ba4985005ceaf3ff98b7d48f0.dll
Size

480KB
MD5

4cffe33ba4985005ceaf3ff98b7d48f0
SHA1

3be61c27e10aa22dd205853a44838c05f0249592
SHA256

b9c019137bff3c55665847df4cec2707aae60f69a7e19a4eba963633caacc764
SHA512

ff06bb0f47385248b2ffaac94b97fff960f3572e16fdcba420cfc6d68043032133ae4b692087fa46f6947508d950b66515c70e7a83fabc8afeaacc07a1a34a9d
SSDEEP

12288:GXo450qjYthuCNIm/kqF6a2FjyHIDiN3AN0:P/ku6FjyHeXN0

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
3984	rundll32mgr.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\rundll32mgr.exe	rundll32.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000c000000023b21-2.dat	upx
behavioral2/memory/3984-6-0x0000000000400000-0x0000000000456000-memory.dmp	upx

Program crash 2 IoCs

pid	pid_target	Process	procid_target
320	3984	WerFault.exe	83
4352	1068	WerFault.exe	82

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	rundll32mgr.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4968 wrote to memory of 1068	4968	rundll32.exe	82
PID 4968 wrote to memory of 1068	4968	rundll32.exe	82
PID 4968 wrote to memory of 1068	4968	rundll32.exe	82
PID 1068 wrote to memory of 3984	1068	rundll32.exe	83
PID 1068 wrote to memory of 3984	1068	rundll32.exe	83
PID 1068 wrote to memory of 3984	1068	rundll32.exe	83

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4cffe33ba4985005ceaf3ff98b7d48f0.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4968
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4cffe33ba4985005ceaf3ff98b7d48f0.dll,#1
  2⤵
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1068
- - C:\Windows\SysWOW64\rundll32mgr.exe
    C:\Windows\SysWOW64\rundll32mgr.exe
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:3984
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3984 -s 272
      4⤵
      Program crash
      PID:320
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1068 -s 696
    3⤵
    - Program crash
    PID:4352

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 1068 -ip 1068
1⤵
PID:4372

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 3984 -ip 3984
1⤵
PID:1168

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

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Downloads

C:\Windows\SysWOW64\rundll32mgr.exe

Filesize
105KB

MD5
27761550031391c56a3a59d3cb7229a5

SHA1
643e456a5fb02a820e79e33fc66e8496f15e5955

SHA256
b6b449ecd550692a3d8d5424e00885155e898d5cbbde98543a5b7b877073daab

SHA512
2aa9607f71e4cb99ab4ccabe33a5f192117b733306cd8d1f4f3054077572e522bc71e1eae679877b5554d0bc3c1281fd5bcf822a2da5da291e6630f65470d0d6

Download Submit
memory/1068-4-0x0000000010000000-0x00000000126B0000-memory.dmp

Filesize
38.7MB

Download
memory/1068-8-0x0000000010000000-0x00000000126B0000-memory.dmp

Filesize
38.7MB

Download
memory/3984-6-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/3984-5-0x0000000000570000-0x0000000000571000-memory.dmp

Filesize
4KB

Download