c569feca597ac68b861f9ee895b274caab0ddff69a9567258af551fbfc4367f0

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
23/08/2024, 02:05

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General

Target

b9f23f0d2b49c14f767125cbaf60bc7c_JaffaCakes118.dll
Size

1.0MB
MD5

b9f23f0d2b49c14f767125cbaf60bc7c
SHA1

ca40591cd0bf4b6b1a5f01dc9b05cd15621b3643
SHA256

c569feca597ac68b861f9ee895b274caab0ddff69a9567258af551fbfc4367f0
SHA512

a2f1c34b98040b08170f9e8741a071312df09c71d1cd6978dd62c548a1e7af08d5a17e3684784c83a8bd3d42b1bfd33c2a8a279c4b7849abc63a8c2857c72351
SSDEEP

24576:e6qOXstzx0ispm3FZRR22CHiyTM0C5sfTnDpCQQaR5C:e6qOSXam37WlBT9XbAQlC

Score

7^/10

discovery evasion upx

Malware Config

Signatures

Checks BIOS information in registry 2 TTPs 1 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	rundll32.exe

Identifies Wine through registry keys 2 TTPs 1 IoCs

Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1302416131-1437503476-2806442725-1000\Software\Wine	rundll32.exe

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/4388-0-0x0000000073340000-0x0000000074F24000-memory.dmp	upx
behavioral2/memory/4388-2-0x0000000073340000-0x0000000074F24000-memory.dmp	upx

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
4388	rundll32.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2996	4388	WerFault.exe	84

System Location Discovery: System Language Discovery 1 TTPs 1 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

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4388	rundll32.exe
4388	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3944 wrote to memory of 4388	3944	rundll32.exe	84
PID 3944 wrote to memory of 4388	3944	rundll32.exe	84
PID 3944 wrote to memory of 4388	3944	rundll32.exe	84

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\b9f23f0d2b49c14f767125cbaf60bc7c_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3944
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\b9f23f0d2b49c14f767125cbaf60bc7c_JaffaCakes118.dll,#1
  2⤵
  - Checks BIOS information in registry
  - Identifies Wine through registry keys
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:4388
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4388 -s 720
    3⤵
    - Program crash
    PID:2996

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4388 -ip 4388
1⤵
PID:3260

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Virtualization/Sandbox Evasion

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/4388-0-0x0000000073340000-0x0000000074F24000-memory.dmp

Filesize
27.9MB

Download
memory/4388-1-0x0000000073341000-0x0000000073366000-memory.dmp

Filesize
148KB

Download
memory/4388-2-0x0000000073340000-0x0000000074F24000-memory.dmp

Filesize
27.9MB

Download