4fdf7bdef3f7316723e557d2996c58fddf77eecf42cba931004d31ca4a1b6e6a

Analysis

max time kernel
140s
max time network
137s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
06-09-2024 15:09

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General

Target

cfd03e2ddb5cac1b5cfc0fb7dd0b769c_JaffaCakes118.exe
Size

353KB
MD5

cfd03e2ddb5cac1b5cfc0fb7dd0b769c
SHA1

f0883585a507937b7c484a729de12e593f2e3a8b
SHA256

4fdf7bdef3f7316723e557d2996c58fddf77eecf42cba931004d31ca4a1b6e6a
SHA512

84144e58c4521a97a41acf21c8886f8b4e43e9847d3e7baf3f23a8187756634e4d3fa9a248701318cd0fd99f0ffccebe9d6c394cf1523487920c957cc1366ec3
SSDEEP

3072:JUvuYgavplbKiNZ9Xj5Ag89Lqm/lGrvqsIp4+za3:JfgtKiNLXm+GGrStpRz0

Score

10^/10

defense_evasion discovery evasion 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\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\cfd03e2ddb5cac1b5cfc0fb7dd0b769c_JaffaCakes118.exe\""	cfd03e2ddb5cac1b5cfc0fb7dd0b769c_JaffaCakes118.exe

Disables Task Manager via registry modification
evasion

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000\Control Panel\International\Geo\Nation	cfd03e2ddb5cac1b5cfc0fb7dd0b769c_JaffaCakes118.exe

Impair Defenses: Safe Mode Boot 1 TTPs 6 IoCs

defense_evasion

Safe Mode Boot

T1562.009

description	ioc	Process
Key deleted	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\SafeBoot\Minimal\UserManager	cfd03e2ddb5cac1b5cfc0fb7dd0b769c_JaffaCakes118.exe
Key deleted	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\SafeBoot\Minimal\SerCx2.sys	cfd03e2ddb5cac1b5cfc0fb7dd0b769c_JaffaCakes118.exe
Key deleted	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\SafeBoot\Minimal\ProfSvc	cfd03e2ddb5cac1b5cfc0fb7dd0b769c_JaffaCakes118.exe
Key deleted	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\SafeBoot\Minimal\Power	cfd03e2ddb5cac1b5cfc0fb7dd0b769c_JaffaCakes118.exe
Key deleted	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\SafeBoot\Minimal\iai2c.sys	cfd03e2ddb5cac1b5cfc0fb7dd0b769c_JaffaCakes118.exe
Key deleted	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\SafeBoot\Minimal\CBDHSvc	cfd03e2ddb5cac1b5cfc0fb7dd0b769c_JaffaCakes118.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3956-0-0x0000000000400000-0x000000000045A000-memory.dmp	upx
behavioral2/memory/3956-2-0x0000000000400000-0x000000000045A000-memory.dmp	upx
behavioral2/memory/3956-3-0x0000000000400000-0x000000000045A000-memory.dmp	upx

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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	cfd03e2ddb5cac1b5cfc0fb7dd0b769c_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	taskkill.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
4844	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4844	taskkill.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3956 wrote to memory of 4844	3956	cfd03e2ddb5cac1b5cfc0fb7dd0b769c_JaffaCakes118.exe	85
PID 3956 wrote to memory of 4844	3956	cfd03e2ddb5cac1b5cfc0fb7dd0b769c_JaffaCakes118.exe	85
PID 3956 wrote to memory of 4844	3956	cfd03e2ddb5cac1b5cfc0fb7dd0b769c_JaffaCakes118.exe	85

C:\Users\Admin\AppData\Local\Temp\cfd03e2ddb5cac1b5cfc0fb7dd0b769c_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\cfd03e2ddb5cac1b5cfc0fb7dd0b769c_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Impair Defenses: Safe Mode Boot
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3956
- C:\Windows\SysWOW64\taskkill.exe
  "C:\Windows\System32\taskkill.exe" /f /im explorer.exe
  2⤵
  - System Location Discovery: System Language Discovery
  - Kills process with taskkill
  - Suspicious use of AdjustPrivilegeToken
  PID:4844

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Winlogon Helper DLL

T1547.004

Defense Evasion

Impair Defenses

T1562

Safe Mode Boot

T1562.009

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/3956-0-0x0000000000400000-0x000000000045A000-memory.dmp

Filesize
360KB

Download
memory/3956-1-0x00000000005C0000-0x00000000005C2000-memory.dmp

Filesize
8KB

Download
memory/3956-2-0x0000000000400000-0x000000000045A000-memory.dmp

Filesize
360KB

Download
memory/3956-3-0x0000000000400000-0x000000000045A000-memory.dmp

Filesize
360KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads