3f724fad9617b26eaf68cb23f8416ef135ab76a5e0658328dac56b4e583f06e5

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 16:11

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General

Target

JaffaCakes118_416229224fc5afb3ef57cc4881197278.dll
Size

352KB
MD5

416229224fc5afb3ef57cc4881197278
SHA1

949a407f81756c6091da2c2011b7f74925cbee00
SHA256

3f724fad9617b26eaf68cb23f8416ef135ab76a5e0658328dac56b4e583f06e5
SHA512

66e34fa922cf2184646d38d9be6b6dc113a760fc32e75eab2e6482a99d02bbaf70a05a44f6fab18a4c3f1f6dce1e4944b9eb1259ee0a45f6a08404a0bf70e9fb
SSDEEP

6144:YQb6g1fEi2FSGXbOYvz2+uOpGTIttHUUYTB/tZeXSGxU9Q8sQPomO55ZhpDw04:YttBEGXKSqEpGTIPdYT9tZeXFxZUPomT

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1516	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/1516-4-0x0000000000400000-0x000000000045D000-memory.dmp	upx
behavioral2/memory/1516-9-0x0000000000400000-0x000000000045D000-memory.dmp	upx

Program crash 2 IoCs

pid	pid_target	Process	procid_target
3752	2168	WerFault.exe	82
4468	1516	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 4952 wrote to memory of 2168	4952	rundll32.exe	82
PID 4952 wrote to memory of 2168	4952	rundll32.exe	82
PID 4952 wrote to memory of 2168	4952	rundll32.exe	82
PID 2168 wrote to memory of 1516	2168	rundll32.exe	83
PID 2168 wrote to memory of 1516	2168	rundll32.exe	83
PID 2168 wrote to memory of 1516	2168	rundll32.exe	83

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_416229224fc5afb3ef57cc4881197278.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4952
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_416229224fc5afb3ef57cc4881197278.dll,#1
  2⤵
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2168
- - C:\Windows\SysWOW64\rundll32mgr.exe
    C:\Windows\SysWOW64\rundll32mgr.exe
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:1516
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1516 -s 264
      4⤵
      Program crash
      PID:4468
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2168 -s 632
    3⤵
    - Program crash
    PID:3752

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2168 -ip 2168
1⤵
PID:2300

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 1516 -ip 1516
1⤵
PID:3452

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
ec8e0b72ad9c2342179b16cca5191ee8

SHA1
5b104b6782ad9e26648a6b76e93cd139b59d14a5

SHA256
f229fc976827f9f615b7ac1cc7efedee45a438401e01964a60fcaf64d433b2c7

SHA512
9ee06d9f1152fe8757338c2462ba65a513feb561c002a4b979c7d25250f4779d1b880991fd03ec99d3402e2a768ef15c1f4849a8f28930e49bb69b204cccfe40

Download Submit
memory/1516-4-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/1516-6-0x0000000000490000-0x0000000000491000-memory.dmp

Filesize
4KB

Download
memory/1516-9-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/2168-0-0x0000000040000000-0x0000000040058000-memory.dmp

Filesize
352KB

Download
memory/2168-7-0x0000000040000000-0x0000000040058000-memory.dmp

Filesize
352KB

Download