ec21c430c7f5e3c1fc7ff2661d0ae48a73ddedd3b9dc942bd7c6dd1dd71fb577

Analysis

max time kernel
140s
max time network
127s
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, 20:13

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General

Target

a80e70d7b09195f2297d4743449ccc0a_JaffaCakes118.exe
Size

70KB
MD5

a80e70d7b09195f2297d4743449ccc0a
SHA1

a0d428cb3a2435ac6fb43e051efd74c98bc54812
SHA256

ec21c430c7f5e3c1fc7ff2661d0ae48a73ddedd3b9dc942bd7c6dd1dd71fb577
SHA512

61ecaa90b64c1c0b419a97810df3e5d2186f383ecbbc2f4f0cbbe5ecd03c28db2e1a208b207c1750bea8b4f5fa240c0bf1bfebcf0249328f7e6528a228cee0f3
SSDEEP

1536:JY5fA48bnhYRpdv8iOq1A8ehDmkLuzEa5TUgEmzHSBmI+ldE9xcH:JYNutqdv6q1AtDKXTuBmV3E8H

Score

10^/10

discovery persistence upx

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "C:\\Users\\Admin\\AppData\\Local\\Temp\\a80e70d7b09195f2297d4743449ccc0a_JaffaCakes118.exe"	a80e70d7b09195f2297d4743449ccc0a_JaffaCakes118.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4988-0-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/4988-5-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/4988-2-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/4988-6-0x0000000000400000-0x0000000000421000-memory.dmp	upx

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\S1775212 = "C:\\Users\\Admin\\AppData\\Local\\Temp\\a80e70d7b09195f2297d4743449ccc0a_JaffaCakes118.exe"	a80e70d7b09195f2297d4743449ccc0a_JaffaCakes118.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	a80e70d7b09195f2297d4743449ccc0a_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	taskkill.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
1412	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1412	taskkill.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4988 wrote to memory of 1412	4988	a80e70d7b09195f2297d4743449ccc0a_JaffaCakes118.exe	91
PID 4988 wrote to memory of 1412	4988	a80e70d7b09195f2297d4743449ccc0a_JaffaCakes118.exe	91
PID 4988 wrote to memory of 1412	4988	a80e70d7b09195f2297d4743449ccc0a_JaffaCakes118.exe	91

C:\Users\Admin\AppData\Local\Temp\a80e70d7b09195f2297d4743449ccc0a_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\a80e70d7b09195f2297d4743449ccc0a_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4988
- C:\Windows\SysWOW64\taskkill.exe
  taskkill /F /IM explorer.exe
  2⤵
  - System Location Discovery: System Language Discovery
  - Kills process with taskkill
  - Suspicious use of AdjustPrivilegeToken
  PID:1412

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=3964,i,15436195446242760253,4000484513008731869,262144 --variations-seed-version --mojo-platform-channel-handle=4248 /prefetch:8
1⤵
PID:1236

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Defense Evasion

Modify Registry

T1112

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

memory/4988-0-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/4988-1-0x00000000004B0000-0x00000000004B6000-memory.dmp

Filesize
24KB

Download
memory/4988-4-0x000000000040C000-0x0000000000411000-memory.dmp

Filesize
20KB

Download
memory/4988-5-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/4988-2-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/4988-6-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads