bf570075d47aec28ab3ea6243c23242bc8725d58c3d9317c56e2f91fedb91188

Analysis

max time kernel
94s
max time network
140s
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 17:58

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General

Target

JaffaCakes118_7b0b77f2387d7fe9c35d417be4445a30.dll
Size

132KB
MD5

7b0b77f2387d7fe9c35d417be4445a30
SHA1

286381ae8435f357a1c26a3bc8b9ecf07f27884a
SHA256

bf570075d47aec28ab3ea6243c23242bc8725d58c3d9317c56e2f91fedb91188
SHA512

dd1877df69b655f92513edd6149fba4eb4abd6e094f343dafbfa2595af79e2616e04df7d02880488c397f50fef8d4616e1f0d9de719a5fd35ea63058094efef3
SSDEEP

3072:VduM0UZVrq1eiresVpA8O1Y3fJMyyBxDlEJ:xFqRy4q46LEJ

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1120	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/0x000b000000023b87-3.dat	upx
behavioral2/memory/1120-4-0x0000000000400000-0x000000000045D000-memory.dmp	upx
behavioral2/memory/1120-7-0x0000000000400000-0x000000000045D000-memory.dmp	upx

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2520	1120	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 4540 wrote to memory of 1668	4540	rundll32.exe	82
PID 4540 wrote to memory of 1668	4540	rundll32.exe	82
PID 4540 wrote to memory of 1668	4540	rundll32.exe	82
PID 1668 wrote to memory of 1120	1668	rundll32.exe	83
PID 1668 wrote to memory of 1120	1668	rundll32.exe	83
PID 1668 wrote to memory of 1120	1668	rundll32.exe	83

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7b0b77f2387d7fe9c35d417be4445a30.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4540
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7b0b77f2387d7fe9c35d417be4445a30.dll,#1
  2⤵
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1668
- - C:\Windows\SysWOW64\rundll32mgr.exe
    C:\Windows\SysWOW64\rundll32mgr.exe
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:1120
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1120 -s 264
      4⤵
      Program crash
      PID:2520

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1120 -ip 1120
1⤵
PID:1744

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
c0a37ec7d551f432e75f2ed5ae3df03f

SHA1
c13588266bbcb28dda5e47e7d6e109c62633dfdf

SHA256
23cc26a8ce27ec26d8ab8bace61141e530177e9610b0993d7206fd0b575b739d

SHA512
14a019e2941643f1eff8ea9ce0bcb59f27fa865257cf64247895a5ecbed27b23518fbb9b08f4efc6fcf884327b0a40fea6448acb2ee00e670de8ba15a70db59f

Download Submit
memory/1120-4-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/1120-6-0x0000000002060000-0x0000000002061000-memory.dmp

Filesize
4KB

Download
memory/1120-7-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/1668-0-0x0000000010000000-0x0000000010021000-memory.dmp

Filesize
132KB

Download