1087bfe8fce8919986085d961266a0b3f114eb119127423921327fb16f007d25

Analysis

max time kernel
92s
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
02/01/2025, 00:04

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

JaffaCakes118_61706e573be5f1713984ce5aa940efd0.dll
Size

257KB
MD5

61706e573be5f1713984ce5aa940efd0
SHA1

62c0818cc5b9cf9398ed3da09831eda269d805d9
SHA256

1087bfe8fce8919986085d961266a0b3f114eb119127423921327fb16f007d25
SHA512

c9b3ae6978254747a9014d1386ceccd0bfbad17cf0470f4c00fc05841a246d10c74713c7e6f57198b09ea5cbe8c9133b868eca9a9a1d28914852765ab056ada7
SSDEEP

6144:ysoA62TjfQ2kbexQ8sd9ICmwt8XP67aaqeO6BAG:5oA62TjfQ2kbexQ8sd9I1wt8f67WyJ

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2956	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/0x0010000000023bce-3.dat	upx
behavioral2/memory/2956-5-0x0000000000400000-0x000000000046C000-memory.dmp	upx
behavioral2/memory/2956-7-0x0000000000400000-0x000000000046C000-memory.dmp	upx

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4116	2956	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 1948 wrote to memory of 3416	1948	rundll32.exe	82
PID 1948 wrote to memory of 3416	1948	rundll32.exe	82
PID 1948 wrote to memory of 3416	1948	rundll32.exe	82
PID 3416 wrote to memory of 2956	3416	rundll32.exe	83
PID 3416 wrote to memory of 2956	3416	rundll32.exe	83
PID 3416 wrote to memory of 2956	3416	rundll32.exe	83

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_61706e573be5f1713984ce5aa940efd0.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1948
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_61706e573be5f1713984ce5aa940efd0.dll,#1
  2⤵
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3416
- - C:\Windows\SysWOW64\rundll32mgr.exe
    C:\Windows\SysWOW64\rundll32mgr.exe
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2956
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2956 -s 264
      4⤵
      Program crash
      PID:4116

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2956 -ip 2956
1⤵
PID:2064

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

Loading Replay Monitor...

Downloads

C:\Windows\SysWOW64\rundll32mgr.exe

Filesize
105KB

MD5
40528988aff2d1f61af5ff359434afb5

SHA1
1100e10d796d6905d3aa25a26e0fa4fb7b23f356

SHA256
e458abdf73c87d6e84d3f9ed39483f0662b62d3f722c8db4a011586aa14a18bf

SHA512
166601caf50154f66f10d5e1fa3718b2fc12d2a6a8361e4d6766a19e6356da4948784e1dda9b23789f9975f6ccb5b9144b1c8325f63f64c228cee2d7f9704ba7

Download Submit
memory/2956-6-0x00000000004F0000-0x00000000004F1000-memory.dmp

Filesize
4KB

Download
memory/2956-5-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/2956-7-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/3416-0-0x0000000074EF0000-0x0000000074F34000-memory.dmp

Filesize
272KB

Download