5eefa0560a9d151e24b97ce9e14b694fdea3fbf084a04f5ec7477882bad4c77f

Analysis

max time kernel
149s
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
27-01-2025 08:19

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General

Target

JaffaCakes118_3da85b96670979be8926455e4d909f8c.dll
Size

256KB
MD5

3da85b96670979be8926455e4d909f8c
SHA1

95011bdecb7db5a9dc22f6135a02850fd8ee76db
SHA256

5eefa0560a9d151e24b97ce9e14b694fdea3fbf084a04f5ec7477882bad4c77f
SHA512

ef549431847c2846b176c905e2069e3637a28154e04ffebc6aac8f0a4dde43390319d7997c860cc6301f1b49efc1634940ede31ab3bf700c4383bf00316baa68
SSDEEP

3072:1dcQ2ZNMSQvbajUTUItjT68+xSb/W3AcykAKyyn8+uT4JDRS7zeEdDXE:FATSOjUQK0TyFKyyn8jT4No7zjXE

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
4884	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/0x0033000000023b70-3.dat	upx
behavioral2/memory/4884-5-0x0000000000400000-0x0000000000463000-memory.dmp	upx
behavioral2/memory/4884-7-0x0000000000400000-0x0000000000463000-memory.dmp	upx

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1880	4884	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 3172 wrote to memory of 552	3172	rundll32.exe	82
PID 3172 wrote to memory of 552	3172	rundll32.exe	82
PID 3172 wrote to memory of 552	3172	rundll32.exe	82
PID 552 wrote to memory of 4884	552	rundll32.exe	83
PID 552 wrote to memory of 4884	552	rundll32.exe	83
PID 552 wrote to memory of 4884	552	rundll32.exe	83

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3da85b96670979be8926455e4d909f8c.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3172
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3da85b96670979be8926455e4d909f8c.dll,#1
  2⤵
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:552
- - C:\Windows\SysWOW64\rundll32mgr.exe
    C:\Windows\SysWOW64\rundll32mgr.exe
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:4884
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4884 -s 264
      4⤵
      Program crash
      PID:1880

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4884 -ip 4884
1⤵
PID:1992

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
98a8ced05b34189b8b36760049b2ea36

SHA1
a5271250fb91d891c7df0cae7812ed68907ae076

SHA256
e50689964fa016ff34ad6517bb863e26e571f907635e719f1fe5e70a61763d95

SHA512
8548b7dc08007fe55e2b7f9bf502c7271655edff52100bb8445a321f37137139c0cd54f7f85558a2f99b38dd574c8435371adc07f8c365bf8a8561c63fe6be45

Download Submit
memory/552-0-0x0000000010000000-0x0000000010042000-memory.dmp

Filesize
264KB

Download
memory/4884-5-0x0000000000400000-0x0000000000463000-memory.dmp

Filesize
396KB

Download
memory/4884-6-0x0000000001F20000-0x0000000001F21000-memory.dmp

Filesize
4KB

Download
memory/4884-7-0x0000000000400000-0x0000000000463000-memory.dmp

Filesize
396KB

Download