19ce93b6e58c4334b38f50d032825f183b0ea6298ea5857970c53c45a7fdb02b

Analysis

max time kernel
150s
max time network
144s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
18/08/2024, 05:55

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General

Target

a5a37759e7086fdb4aacc1a54068f12f_JaffaCakes118.dll
Size

25KB
MD5

a5a37759e7086fdb4aacc1a54068f12f
SHA1

42f1237dfe99176a15f21ca385bc63a552cadc88
SHA256

19ce93b6e58c4334b38f50d032825f183b0ea6298ea5857970c53c45a7fdb02b
SHA512

fabf33465e6b8e68397495031ca87c305b265feb95574d879f5cd45568380221efdcb42f9cd1db2c915fd3c29c587a2408220cefa1bcf3ef3f95ae02f21b5eb0
SSDEEP

768:urHFI0/T/ltj9LEPgf2cTeXsulEt8f30MFseM:mHFJ3pLPf2qeXsoFFM

Score

7^/10

defense_evasion discovery privilege_escalation

Malware Config

Signatures

Loads dropped DLL 1 IoCs

pid	Process
3864	rundll32.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 3 IoCs

pid	Process
3864	rundll32.exe
3864	rundll32.exe
3864	rundll32.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\msvcr.dll	rundll32.exe
File opened for modification	C:\Windows\msvcr.dll	rundll32.exe

Access Token Manipulation: Create Process with Token 1 TTPs 1 IoCs

defense_evasion privilege_escalation

Create Process with Token

T1134.002

pid	Process
3864	rundll32.exe

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	rundll32.exe

Modifies registry class 5 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{7B3AC3FA-B695-41b6-BAA0-860EB5EB6FD6}	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{7B3AC3FA-B695-41b6-BAA0-860EB5EB6FD6}\{F69EB73C-700A-42c9-8F9D-E8C4ABC27EF3} = "a5a37759e7086fdb4aacc1a54068f12f_JaffaCakes118.dll,1285097749,1563368310,-1814625877"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{fbeb8a05-beee-4442-804e-409d6c4515e9}\InProcServer32	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{fbeb8a05-beee-4442-804e-409d6c4515e9}	rundll32.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
3864	rundll32.exe
3864	rundll32.exe
3864	rundll32.exe
3864	rundll32.exe
3864	rundll32.exe
3864	rundll32.exe
3864	rundll32.exe
3864	rundll32.exe
3864	rundll32.exe
3864	rundll32.exe
3864	rundll32.exe
3864	rundll32.exe
3864	rundll32.exe
3864	rundll32.exe
3864	rundll32.exe
3864	rundll32.exe
3864	rundll32.exe
3864	rundll32.exe
3864	rundll32.exe
3864	rundll32.exe
3864	rundll32.exe
3864	rundll32.exe
3864	rundll32.exe
3864	rundll32.exe
3864	rundll32.exe
3864	rundll32.exe
3864	rundll32.exe
3864	rundll32.exe
3864	rundll32.exe
3864	rundll32.exe
3864	rundll32.exe
3864	rundll32.exe
3864	rundll32.exe
3864	rundll32.exe
3864	rundll32.exe
3864	rundll32.exe
3864	rundll32.exe
3864	rundll32.exe
3864	rundll32.exe
3864	rundll32.exe
3864	rundll32.exe
3864	rundll32.exe
3864	rundll32.exe
3864	rundll32.exe
3864	rundll32.exe
3864	rundll32.exe
3864	rundll32.exe
3864	rundll32.exe
3864	rundll32.exe
3864	rundll32.exe
3864	rundll32.exe
3864	rundll32.exe
3864	rundll32.exe
3864	rundll32.exe
3864	rundll32.exe
3864	rundll32.exe
3864	rundll32.exe
3864	rundll32.exe
3864	rundll32.exe
3864	rundll32.exe
3864	rundll32.exe
3864	rundll32.exe
3864	rundll32.exe
3864	rundll32.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3668 wrote to memory of 2712	3668	rundll32.exe	84
PID 3668 wrote to memory of 2712	3668	rundll32.exe	84
PID 3668 wrote to memory of 2712	3668	rundll32.exe	84
PID 2712 wrote to memory of 3864	2712	rundll32.exe	85
PID 2712 wrote to memory of 3864	2712	rundll32.exe	85
PID 2712 wrote to memory of 3864	2712	rundll32.exe	85

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\a5a37759e7086fdb4aacc1a54068f12f_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3668
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\a5a37759e7086fdb4aacc1a54068f12f_JaffaCakes118.dll,#1
  2⤵
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2712
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32 "C:\Windows\msvcr.dll",_RunAs@0
    3⤵
    - Loads dropped DLL
    - Suspicious use of NtSetInformationThreadHideFromDebugger
    - Access Token Manipulation: Create Process with Token
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    PID:3864

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Access Token Manipulation

T1134

Create Process with Token

T1134.002

Defense Evasion

Access Token Manipulation

T1134

Create Process with Token

T1134.002

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\msvcr.dll

Filesize
25KB

MD5
a5a37759e7086fdb4aacc1a54068f12f

SHA1
42f1237dfe99176a15f21ca385bc63a552cadc88

SHA256
19ce93b6e58c4334b38f50d032825f183b0ea6298ea5857970c53c45a7fdb02b

SHA512
fabf33465e6b8e68397495031ca87c305b265feb95574d879f5cd45568380221efdcb42f9cd1db2c915fd3c29c587a2408220cefa1bcf3ef3f95ae02f21b5eb0

Download Submit
memory/2712-0-0x0000000010000000-0x000000001004C000-memory.dmp

Filesize
304KB

Download
memory/2712-6-0x0000000010000000-0x000000001004C000-memory.dmp

Filesize
304KB

Download
memory/3864-5-0x0000000010000000-0x000000001004C000-memory.dmp

Filesize
304KB

Download
memory/3864-7-0x0000000010000000-0x000000001004C000-memory.dmp

Filesize
304KB

Download