28aa2f2eba6f2153a4e0ea31cd38f77de627cd61e6edb368f7cbf2cfae022356

Analysis

max time kernel
94s
max time network
130s
platform
windows10-2004_x64
resource
win10v2004-20250129-en
resource tags

arch:x64arch:x86image:win10v2004-20250129-enlocale:en-usos:windows10-2004-x64system
submitted
31/01/2025, 16:23

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General

Target

JaffaCakes118_6bea8c5b38897c74a85cdb8ae47913eb.dll
Size

380KB
MD5

6bea8c5b38897c74a85cdb8ae47913eb
SHA1

8160e6176b55b24dce43c4ca1bcfd885976efdf0
SHA256

28aa2f2eba6f2153a4e0ea31cd38f77de627cd61e6edb368f7cbf2cfae022356
SHA512

4a14a83bd99736fc682684232ea36c0790ca8ccb6eb5ed08a9399ebda7a861d5c9fe05b929c97aa1d9236b5c31bd89f35cd73e6a1b131e237ff8d8323932f333
SSDEEP

6144:mhwcskkkkknffCp5CrRKlua3BowIpTSGI:awqqPowgx

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
720	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/0x000c000000023af1-3.dat	upx
behavioral2/memory/720-5-0x0000000000400000-0x0000000000441000-memory.dmp	upx
behavioral2/memory/720-8-0x0000000000400000-0x0000000000441000-memory.dmp	upx

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4704	720	WerFault.exe	85

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 448 wrote to memory of 924	448	rundll32.exe	83
PID 448 wrote to memory of 924	448	rundll32.exe	83
PID 448 wrote to memory of 924	448	rundll32.exe	83
PID 924 wrote to memory of 720	924	rundll32.exe	85
PID 924 wrote to memory of 720	924	rundll32.exe	85
PID 924 wrote to memory of 720	924	rundll32.exe	85

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6bea8c5b38897c74a85cdb8ae47913eb.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:448
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6bea8c5b38897c74a85cdb8ae47913eb.dll,#1
  2⤵
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:924
- - C:\Windows\SysWOW64\rundll32Srv.exe
    C:\Windows\SysWOW64\rundll32Srv.exe
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:720
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 720 -s 268
      4⤵
      Program crash
      PID:4704

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 720 -ip 720
1⤵
PID:2704

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
94KB

MD5
f6736faa3126f64ed4a7109e40c47806

SHA1
0d50917f44d6e173bac24916c95343616dcbf18c

SHA256
bc0cb854888c155cbfed860a6546bea3c82db643df30437fe14d91194939a874

SHA512
29cc26cd4df360252917a5d913e5e4776b6d05061b464f09dbb33918491affdc15cac9e142a9227a48f27d26db1f8ee85bd3d417365d6fef9b2fd380e090efe5

Download Submit
memory/720-5-0x0000000000400000-0x0000000000441000-memory.dmp

Filesize
260KB

Download
memory/720-6-0x00000000004C0000-0x00000000004C1000-memory.dmp

Filesize
4KB

Download
memory/720-8-0x0000000000400000-0x0000000000441000-memory.dmp

Filesize
260KB

Download
memory/924-1-0x0000000010000000-0x0000000010060000-memory.dmp

Filesize
384KB

Download