41b626c8458c86cc27a0cc6a9af31b83dbaf897d4fb5c41509a00d17486bb340

Analysis

max time kernel
150s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
12/09/2024, 11:10

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General

Target

dc3a2381ad590e762dde62fe2837b892_JaffaCakes118.exe
Size

103KB
MD5

dc3a2381ad590e762dde62fe2837b892
SHA1

25828a97aaca3686ea9389912c4e154fefd876be
SHA256

41b626c8458c86cc27a0cc6a9af31b83dbaf897d4fb5c41509a00d17486bb340
SHA512

c257424059419f197346496a714595c8622dcd4e6f2296d2054fc36407ce995e978de8e72e90bc935bbbd9e9a0742b91ffadc16082647ae47aa9ae8db24f2118
SSDEEP

1536:RQxqcQu0sfmtEso08UhzaWF/1IcpaEKNNJAiwa3Ll/chT59v/va2:W/0LEspTlEbNodsNcV5E2

Score

10^/10

discovery persistence

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\userinit = "C:\\Windows\\system32\\twext.exe,"	4unB640.exe

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-1-5-21-4182098368-2521458979-3782681353-1000\Control Panel\International\Geo\Nation	dc3a2381ad590e762dde62fe2837b892_JaffaCakes118.exe

Executes dropped EXE 2 IoCs

pid	Process
3148	4unB640.exe
2100	4unB640.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\twext.exe	4unB640.exe
File created	C:\Windows\SysWOW64\twext.exe	4unB640.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3148 set thread context of 2100	3148	4unB640.exe	85

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 3 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	dc3a2381ad590e762dde62fe2837b892_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4unB640.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4unB640.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2100	4unB640.exe
2100	4unB640.exe
2100	4unB640.exe
2100	4unB640.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2100	4unB640.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3148	4unB640.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 1172 wrote to memory of 3148	1172	dc3a2381ad590e762dde62fe2837b892_JaffaCakes118.exe	84
PID 1172 wrote to memory of 3148	1172	dc3a2381ad590e762dde62fe2837b892_JaffaCakes118.exe	84
PID 1172 wrote to memory of 3148	1172	dc3a2381ad590e762dde62fe2837b892_JaffaCakes118.exe	84
PID 3148 wrote to memory of 2100	3148	4unB640.exe	85
PID 3148 wrote to memory of 2100	3148	4unB640.exe	85
PID 3148 wrote to memory of 2100	3148	4unB640.exe	85
PID 3148 wrote to memory of 2100	3148	4unB640.exe	85
PID 3148 wrote to memory of 2100	3148	4unB640.exe	85
PID 3148 wrote to memory of 2100	3148	4unB640.exe	85
PID 3148 wrote to memory of 2100	3148	4unB640.exe	85
PID 3148 wrote to memory of 2100	3148	4unB640.exe	85
PID 3148 wrote to memory of 2100	3148	4unB640.exe	85
PID 2100 wrote to memory of 616	2100	4unB640.exe	5
PID 2100 wrote to memory of 616	2100	4unB640.exe	5
PID 2100 wrote to memory of 616	2100	4unB640.exe	5
PID 2100 wrote to memory of 616	2100	4unB640.exe	5
PID 2100 wrote to memory of 616	2100	4unB640.exe	5
PID 2100 wrote to memory of 616	2100	4unB640.exe	5
PID 2100 wrote to memory of 616	2100	4unB640.exe	5
PID 2100 wrote to memory of 616	2100	4unB640.exe	5
PID 2100 wrote to memory of 616	2100	4unB640.exe	5
PID 2100 wrote to memory of 616	2100	4unB640.exe	5
PID 2100 wrote to memory of 616	2100	4unB640.exe	5
PID 2100 wrote to memory of 616	2100	4unB640.exe	5
PID 2100 wrote to memory of 616	2100	4unB640.exe	5
PID 2100 wrote to memory of 616	2100	4unB640.exe	5
PID 2100 wrote to memory of 616	2100	4unB640.exe	5
PID 2100 wrote to memory of 616	2100	4unB640.exe	5
PID 2100 wrote to memory of 616	2100	4unB640.exe	5
PID 2100 wrote to memory of 616	2100	4unB640.exe	5
PID 2100 wrote to memory of 616	2100	4unB640.exe	5
PID 2100 wrote to memory of 616	2100	4unB640.exe	5
PID 2100 wrote to memory of 616	2100	4unB640.exe	5
PID 2100 wrote to memory of 616	2100	4unB640.exe	5
PID 2100 wrote to memory of 616	2100	4unB640.exe	5
PID 2100 wrote to memory of 616	2100	4unB640.exe	5
PID 2100 wrote to memory of 616	2100	4unB640.exe	5
PID 2100 wrote to memory of 616	2100	4unB640.exe	5
PID 2100 wrote to memory of 616	2100	4unB640.exe	5
PID 2100 wrote to memory of 616	2100	4unB640.exe	5
PID 2100 wrote to memory of 616	2100	4unB640.exe	5
PID 2100 wrote to memory of 616	2100	4unB640.exe	5
PID 2100 wrote to memory of 616	2100	4unB640.exe	5
PID 2100 wrote to memory of 616	2100	4unB640.exe	5
PID 2100 wrote to memory of 616	2100	4unB640.exe	5
PID 2100 wrote to memory of 616	2100	4unB640.exe	5
PID 2100 wrote to memory of 616	2100	4unB640.exe	5
PID 2100 wrote to memory of 616	2100	4unB640.exe	5
PID 2100 wrote to memory of 616	2100	4unB640.exe	5
PID 2100 wrote to memory of 616	2100	4unB640.exe	5
PID 2100 wrote to memory of 616	2100	4unB640.exe	5
PID 2100 wrote to memory of 616	2100	4unB640.exe	5
PID 2100 wrote to memory of 616	2100	4unB640.exe	5
PID 2100 wrote to memory of 616	2100	4unB640.exe	5
PID 2100 wrote to memory of 616	2100	4unB640.exe	5
PID 2100 wrote to memory of 616	2100	4unB640.exe	5
PID 2100 wrote to memory of 616	2100	4unB640.exe	5
PID 2100 wrote to memory of 616	2100	4unB640.exe	5
PID 2100 wrote to memory of 616	2100	4unB640.exe	5
PID 2100 wrote to memory of 616	2100	4unB640.exe	5
PID 2100 wrote to memory of 616	2100	4unB640.exe	5
PID 2100 wrote to memory of 616	2100	4unB640.exe	5
PID 2100 wrote to memory of 616	2100	4unB640.exe	5
PID 2100 wrote to memory of 616	2100	4unB640.exe	5

C:\Windows\system32\winlogon.exe
winlogon.exe
1⤵
PID:616

C:\Users\Admin\AppData\Local\Temp\dc3a2381ad590e762dde62fe2837b892_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\dc3a2381ad590e762dde62fe2837b892_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1172
- C:\Users\Admin\AppData\Local\Temp\4unB640.exe
  "C:\Users\Admin\AppData\Local\Temp\4unB640.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3148
- - C:\Users\Admin\AppData\Local\Temp\4unB640.exe
    "C:\Users\Admin\AppData\Local\Temp\4unB640.exe"
    3⤵
    - Modifies WinLogon for persistence
    - Executes dropped EXE
    - Drops file in System32 directory
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2100

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

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\4unB640.exe

Filesize
74KB

MD5
79c81f675cfe013589494a7b2e0ed245

SHA1
8e742846c8faf709c5b55f6f31000e47ebd66c41

SHA256
4d7b5352b3ee7b2dacf331f10625d3d15f574aa8699724f6f8244659fed5a021

SHA512
e4465841c4c77eca785866707e8416dcc2efe42ca1b4036e612f1a01639500842225548cb6adcc5f907c3f0e47de771bacff2908ad076e6765f2986c5d1db4e3

Download Submit
memory/616-66-0x000000000FB10000-0x000000000FB36000-memory.dmp

Filesize
152KB

Download
memory/616-81-0x000000000FBA0000-0x000000000FBC6000-memory.dmp

Filesize
152KB

Download
memory/616-77-0x000000000FB70000-0x000000000FB96000-memory.dmp

Filesize
152KB

Download
memory/616-71-0x000000000FB40000-0x000000000FB66000-memory.dmp

Filesize
152KB

Download
memory/616-41-0x000000000FA20000-0x000000000FA46000-memory.dmp

Filesize
152KB

Download
memory/616-62-0x000000000FAE0000-0x000000000FB06000-memory.dmp

Filesize
152KB

Download
memory/616-56-0x000000000FAB0000-0x000000000FAD6000-memory.dmp

Filesize
152KB

Download
memory/616-51-0x000000000FA80000-0x000000000FAA6000-memory.dmp

Filesize
152KB

Download
memory/616-46-0x000000000FA50000-0x000000000FA76000-memory.dmp

Filesize
152KB

Download
memory/616-31-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/616-36-0x000000000F9F0000-0x000000000FA16000-memory.dmp

Filesize
152KB

Download
memory/1172-12-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2100-18-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2100-25-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2100-26-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2100-24-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2100-16-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2100-17-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2100-22-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2100-21-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2100-15-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download