eb7c5798828598cda2caf8ab7a101e0b994cf1f6791e0e2da3ae175e91fa2572

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
04-01-2025 15:29

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General

Target

JaffaCakes118_7a70f459ba09724874399055d0718651.dll
Size

114KB
MD5

7a70f459ba09724874399055d0718651
SHA1

733ddd1584d64bcae01a987f10cba39562b17349
SHA256

eb7c5798828598cda2caf8ab7a101e0b994cf1f6791e0e2da3ae175e91fa2572
SHA512

ec7e0a4fafde44fac62e2941f8ba724168618adb94549f5a3e63c286c0e6e9ffc8c912b639752bc007fd094100e7ac853a97de628d5f061dd41c3193e6c16c44
SSDEEP

3072:TwmhkkkkujThPKpFLzNl4M+dzDsLVRi627ekkphLxckGhVHbW0vksgxrKkLRskN3:TGpPkF3NrwzDsLDiy4aYU

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
3116	rundll32mgr.exe

Drops file in System32 directory 1 IoCs

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

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000c000000023b18-3.dat	upx
behavioral2/memory/3116-5-0x0000000000400000-0x000000000045B000-memory.dmp	upx
behavioral2/memory/3116-7-0x0000000000400000-0x000000000045B000-memory.dmp	upx

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4116	3116	WerFault.exe	83

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 4448 wrote to memory of 3656	4448	rundll32.exe	82
PID 4448 wrote to memory of 3656	4448	rundll32.exe	82
PID 4448 wrote to memory of 3656	4448	rundll32.exe	82
PID 3656 wrote to memory of 3116	3656	rundll32.exe	83
PID 3656 wrote to memory of 3116	3656	rundll32.exe	83
PID 3656 wrote to memory of 3116	3656	rundll32.exe	83

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7a70f459ba09724874399055d0718651.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4448
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7a70f459ba09724874399055d0718651.dll,#1
  2⤵
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3656
- - C:\Windows\SysWOW64\rundll32mgr.exe
    C:\Windows\SysWOW64\rundll32mgr.exe
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:3116
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3116 -s 264
      4⤵
      Program crash
      PID:4116

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3116 -ip 3116
1⤵
PID:3688

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\rundll32mgr.exe

Filesize
106KB

MD5
db92102c142a97620d0f02b3321d235b

SHA1
84adf0da0cfa131b61a23cf26719b5d0c75702a9

SHA256
12dc8f962b54cbf925146db55709c9ad8465e392aede3a5095f74e7ca6ade2a5

SHA512
04bbb8ca5e5e63e85da4c4a9de8f46352cb9437005c0cae014da1d61c58916584a284fb7fba21b06f963de440362e150b6f2ef5d69143fd6a187c0712bf28d65

Download Submit
memory/3116-5-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download
memory/3116-6-0x00000000004A0000-0x00000000004A1000-memory.dmp

Filesize
4KB

Download
memory/3116-7-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download
memory/3656-1-0x0000000010000000-0x0000000010023000-memory.dmp

Filesize
140KB

Download