b3090d6e37b601377d220aa08b56e76a475e89ac669b6a4a14f3875a64c6e297

General

Target

764044617e89d1c70f743bf956bda882_JaffaCakes118.dll
Size

86KB
MD5

764044617e89d1c70f743bf956bda882
SHA1

19565aad64438f681a07f4b8fcf797fea7401298
SHA256

b3090d6e37b601377d220aa08b56e76a475e89ac669b6a4a14f3875a64c6e297
SHA512

995e3b4d974c77109090642b41d31868d9c9240ab0894351b8c8d3716197459c28bed36b8ef8ced5c8ac933923e92befc49d70e04583795f7816b39fd09bcd3e
SSDEEP

1536:R1c5o/vvxg/PhMcp1b9gcXBmot9OjtgRVJbuO8DFr38wYdBjCBEq:g5db9gcRmoGxejuO8DFfcB

Score

8^/10

discovery evasion persistence privilege_escalation upx

Malware Config

Signatures

Blocklisted process makes network request 13 IoCs

flow	pid	Process
6	2308	rundll32.exe
8	2308	rundll32.exe
9	2308	rundll32.exe
10	2308	rundll32.exe
15	2308	rundll32.exe
17	2308	rundll32.exe
18	2308	rundll32.exe
20	2308	rundll32.exe
29	2308	rundll32.exe
30	2308	rundll32.exe
31	2308	rundll32.exe
32	2308	rundll32.exe
34	2308	rundll32.exe

Modifies Windows Firewall 2 TTPs 1 IoCs

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
2152	netsh.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2308-2-0x00000000001B0000-0x00000000001DD000-memory.dmp	upx
behavioral1/memory/2308-3-0x00000000001B0000-0x00000000001DD000-memory.dmp	upx
behavioral1/memory/2308-12-0x00000000001B0000-0x00000000001DD000-memory.dmp	upx
behavioral1/memory/2308-13-0x00000000001B0000-0x00000000001DD000-memory.dmp	upx

Looks up external IP address via web service 2 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
33	checkip.dyndns.org
3	checkip.dyndns.org

Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

persistence privilege_escalation

Netsh Helper DLL

T1546.007

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.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	netsh.exe

Modifies Internet Explorer settings 1 TTPs 2 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3294248377-1418901787-4083263181-1000\Software\Microsoft\Internet Explorer\Security	rundll32.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3294248377-1418901787-4083263181-1000\Software\Microsoft\Internet Explorer\Security\installation_id = 1dbfa0dab337e84d88255b201df4b207	rundll32.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2452 wrote to memory of 2308	2452	rundll32.exe	31
PID 2452 wrote to memory of 2308	2452	rundll32.exe	31
PID 2452 wrote to memory of 2308	2452	rundll32.exe	31
PID 2452 wrote to memory of 2308	2452	rundll32.exe	31
PID 2452 wrote to memory of 2308	2452	rundll32.exe	31
PID 2452 wrote to memory of 2308	2452	rundll32.exe	31
PID 2452 wrote to memory of 2308	2452	rundll32.exe	31
PID 2308 wrote to memory of 2152	2308	rundll32.exe	32
PID 2308 wrote to memory of 2152	2308	rundll32.exe	32
PID 2308 wrote to memory of 2152	2308	rundll32.exe	32
PID 2308 wrote to memory of 2152	2308	rundll32.exe	32

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\764044617e89d1c70f743bf956bda882_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2452
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\764044617e89d1c70f743bf956bda882_JaffaCakes118.dll,#1
  2⤵
  - Blocklisted process makes network request
  - System Location Discovery: System Language Discovery
  - Modifies Internet Explorer settings
  - Suspicious use of WriteProcessMemory
  PID:2308
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Windows\SysWOW64\rundll32.exe" "Explorer" enable
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:2152

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Privilege Escalation

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Defense Evasion

Impair Defenses

1

T1562

Disable or Modify System Firewall

Modify Registry

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/2308-2-0x00000000001B0000-0x00000000001DD000-memory.dmp

Filesize
180KB

Download
memory/2308-1-0x0000000000170000-0x000000000019D000-memory.dmp

Filesize
180KB

Download
memory/2308-0-0x0000000000170000-0x000000000019D000-memory.dmp

Filesize
180KB

Download
memory/2308-3-0x00000000001B0000-0x00000000001DD000-memory.dmp

Filesize
180KB

Download
memory/2308-5-0x0000000000170000-0x000000000019D000-memory.dmp

Filesize
180KB

Download
memory/2308-12-0x00000000001B0000-0x00000000001DD000-memory.dmp

Filesize
180KB

Download
memory/2308-13-0x00000000001B0000-0x00000000001DD000-memory.dmp

Filesize
180KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads