9508201c36dccbe669ac60211ffcf23017abd5d54ac879ea5f7be6037312bb74

Analysis

max time kernel
150s
max time network
124s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
21/08/2024, 17:01

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General

Target
b448d90f6bee1744a288250ca69b695d_JaffaCakes118.exe
Size 49KB
Sample240821-vjt19stdnr
SHA256 9508201c36dccbe669ac60211ffcf23017abd5d54ac879ea5f7be6037312bb74
MD5 b448d90f6bee1744a288250ca69b695d
SHA1 463acb5e49193db3809dc8be5f777356d65f6019
SHA512 b0d12314956c33f19902c2c607a1e7854a0de60e5e84e4ce299b3255d8d9185b122d0b8b4f8592eeb7bbbb446902c63dcb02700bbe3a1a8b4b79bcaffbce866f
SSDEEP 1536:cUHz+CPrfIMRE+6gwTbnNV1b4awmjCPCNSbim:3jddMTV89mYW
MD5 SHA1 SHA512 SSDEEP

Score

8^/10

defense_evasion discovery exploit persistence upx

Malware Config

Signatures

Possible privilege escalation attempt 2 IoCs

exploit

pid	Process
4328	takeown.exe
1980	icacls.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-1-5-21-2718105630-359604950-2820636825-1000\Control Panel\International\Geo\Nation	b448d90f6bee1744a288250ca69b695d_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

pid	Process
4424	wlock.exe

Modifies file permissions 1 TTPs 2 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
4328	takeown.exe
1980	icacls.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1776-0-0x0000000000400000-0x000000000041D000-memory.dmp	upx
behavioral2/memory/1776-10-0x0000000000400000-0x000000000041D000-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\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\wlock = "C:\\Users\\Admin\\wlock\\wlock.exe"	reg.exe

File and Directory Permissions Modification: Windows File and Directory Permissions Modification 1 TTPs
defense_evasion

Windows File and Directory Permissions Modification
T1222.001
Indicator Removal: File Deletion 1 TTPs
Adversaries may delete files left behind by the actions of their intrusion activity.
defense_evasion

File Deletion
T1070.004
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 8 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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wlock.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b448d90f6bee1744a288250ca69b695d_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	takeown.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe

Modifies Control Panel 1 IoCs

evasion

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2718105630-359604950-2820636825-1000\Control Panel\Desktop\ScreenSaveActive = "0"	wlock.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4424	wlock.exe
4424	wlock.exe
4424	wlock.exe
4424	wlock.exe
4424	wlock.exe
4424	wlock.exe
4424	wlock.exe
4424	wlock.exe
4424	wlock.exe
4424	wlock.exe
4424	wlock.exe
4424	wlock.exe
4424	wlock.exe
4424	wlock.exe
4424	wlock.exe
4424	wlock.exe
4424	wlock.exe
4424	wlock.exe
4424	wlock.exe
4424	wlock.exe
4424	wlock.exe
4424	wlock.exe
4424	wlock.exe
4424	wlock.exe
4424	wlock.exe
4424	wlock.exe
4424	wlock.exe
4424	wlock.exe
4424	wlock.exe
4424	wlock.exe
4424	wlock.exe
4424	wlock.exe
4424	wlock.exe
4424	wlock.exe
4424	wlock.exe
4424	wlock.exe
4424	wlock.exe
4424	wlock.exe
4424	wlock.exe
4424	wlock.exe
4424	wlock.exe
4424	wlock.exe
4424	wlock.exe
4424	wlock.exe
4424	wlock.exe
4424	wlock.exe
4424	wlock.exe
4424	wlock.exe
4424	wlock.exe
4424	wlock.exe
4424	wlock.exe
4424	wlock.exe
4424	wlock.exe
4424	wlock.exe
4424	wlock.exe
4424	wlock.exe
4424	wlock.exe
4424	wlock.exe
4424	wlock.exe
4424	wlock.exe
4424	wlock.exe
4424	wlock.exe
4424	wlock.exe
4424	wlock.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeTakeOwnershipPrivilege	4328	takeown.exe
Token: SeIncBasePriorityPrivilege	1776	b448d90f6bee1744a288250ca69b695d_JaffaCakes118.exe
Token: SeDebugPrivilege	4424	wlock.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4424	wlock.exe
4424	wlock.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 1776 wrote to memory of 4328	1776	b448d90f6bee1744a288250ca69b695d_JaffaCakes118.exe	84
PID 1776 wrote to memory of 4328	1776	b448d90f6bee1744a288250ca69b695d_JaffaCakes118.exe	84
PID 1776 wrote to memory of 4328	1776	b448d90f6bee1744a288250ca69b695d_JaffaCakes118.exe	84
PID 1776 wrote to memory of 1980	1776	b448d90f6bee1744a288250ca69b695d_JaffaCakes118.exe	88
PID 1776 wrote to memory of 1980	1776	b448d90f6bee1744a288250ca69b695d_JaffaCakes118.exe	88
PID 1776 wrote to memory of 1980	1776	b448d90f6bee1744a288250ca69b695d_JaffaCakes118.exe	88
PID 1776 wrote to memory of 3556	1776	b448d90f6bee1744a288250ca69b695d_JaffaCakes118.exe	91
PID 1776 wrote to memory of 3556	1776	b448d90f6bee1744a288250ca69b695d_JaffaCakes118.exe	91
PID 1776 wrote to memory of 3556	1776	b448d90f6bee1744a288250ca69b695d_JaffaCakes118.exe	91
PID 1776 wrote to memory of 1376	1776	b448d90f6bee1744a288250ca69b695d_JaffaCakes118.exe	93
PID 1776 wrote to memory of 1376	1776	b448d90f6bee1744a288250ca69b695d_JaffaCakes118.exe	93
PID 1776 wrote to memory of 1376	1776	b448d90f6bee1744a288250ca69b695d_JaffaCakes118.exe	93
PID 1376 wrote to memory of 3232	1376	cmd.exe	95
PID 1376 wrote to memory of 3232	1376	cmd.exe	95
PID 1376 wrote to memory of 3232	1376	cmd.exe	95
PID 1776 wrote to memory of 4424	1776	b448d90f6bee1744a288250ca69b695d_JaffaCakes118.exe	96
PID 1776 wrote to memory of 4424	1776	b448d90f6bee1744a288250ca69b695d_JaffaCakes118.exe	96
PID 1776 wrote to memory of 4424	1776	b448d90f6bee1744a288250ca69b695d_JaffaCakes118.exe	96
PID 1776 wrote to memory of 1052	1776	b448d90f6bee1744a288250ca69b695d_JaffaCakes118.exe	97
PID 1776 wrote to memory of 1052	1776	b448d90f6bee1744a288250ca69b695d_JaffaCakes118.exe	97
PID 1776 wrote to memory of 1052	1776	b448d90f6bee1744a288250ca69b695d_JaffaCakes118.exe	97

C:\Users\Admin\AppData\Local\Temp\b448d90f6bee1744a288250ca69b695d_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\b448d90f6bee1744a288250ca69b695d_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1776
- C:\Windows\SysWOW64\takeown.exe
  "C:\Windows\System32\takeown.exe" /f "C:\Windows\System32\rstrui.exe"
  2⤵
  - Possible privilege escalation attempt
  - Modifies file permissions
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:4328
- C:\Windows\SysWOW64\icacls.exe
  "C:\Windows\System32\icacls.exe" "C:\Windows\System32\rstrui.exe" /grant Admin:F
  2⤵
  - Possible privilege escalation attempt
  - Modifies file permissions
  - System Location Discovery: System Language Discovery
  PID:1980
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c del /f /q "C:\Windows\System32\rstrui.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3556
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c REG ADD HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run /v wlock /t REG_SZ /d "C:\Users\Admin\wlock\wlock.exe" /f
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1376
- - C:\Windows\SysWOW64\reg.exe
    REG ADD HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run /v wlock /t REG_SZ /d "C:\Users\Admin\wlock\wlock.exe" /f
    3⤵
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    PID:3232
- C:\Users\Admin\wlock\wlock.exe
  "C:\Users\Admin\wlock\wlock.exe" f
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Modifies Control Panel
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:4424
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\B448D9~1.EXE > NuL
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1052

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

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

File and Directory Permissions Modification

T1222

Windows File and Directory Permissions Modification

T1222.001

Indicator Removal

T1070

File Deletion

T1070.004

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

wlock.exe

Path C:\Users\Admin\wlock\wlock.exe
Size 73KB
SHA256 529af46f1155a07672d38acc200b832de6be8ba79af111ef23bd35da0c850c24
MD5 41aac66a0348dbb9d70dfba8931a5470
SHA1 497ac662dfde4ed88849eeeffb7333024f8be92b
SHA512 81a700240373b5640316a2d72bcc1931aa01b51b88137c7a270cf120a90677df7d0bc9cfd47f6e6471b52d5be2d5992a89b8b53c0a95b58ef1014c79db567a3f
SSDEEP 1536:Y6/kxUAEV2Jul6+3kK8bJmUDFYM6dfGRJ:CUCP+h8bJmUsfOJ
MD5 SHA1 SHA512 SSDEEP

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memory/1776-0-0x0000000000400000-0x000000000041D000-memory.dmp

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memory/1776-8-0x00000000005A0000-0x00000000005A1000-memory.dmp

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memory/1776-10-0x0000000000400000-0x000000000041D000-memory.dmp

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memory/4424-22-0x0000000000DE0000-0x0000000000DE1000-memory.dmp

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memory/4424-16-0x0000000000DF0000-0x0000000000DF1000-memory.dmp

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memory/4424-26-0x0000000000DE0000-0x0000000000DE1000-memory.dmp

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memory/4424-25-0x0000000000DE0000-0x0000000000DE1000-memory.dmp

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memory/4424-24-0x0000000000DE0000-0x0000000000DE1000-memory.dmp

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memory/4424-23-0x0000000000DE0000-0x0000000000DE1000-memory.dmp

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memory/4424-19-0x0000000000DF0000-0x0000000000DF1000-memory.dmp

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memory/4424-18-0x0000000000DF0000-0x0000000000DF1000-memory.dmp

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memory/4424-17-0x0000000000DF0000-0x0000000000DF1000-memory.dmp

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memory/4424-28-0x0000000000DE0000-0x0000000000DE1000-memory.dmp

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memory/4424-15-0x0000000000DF0000-0x0000000000DF1000-memory.dmp

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memory/4424-14-0x0000000000DE0000-0x0000000000DE1000-memory.dmp

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memory/4424-21-0x0000000000DF0000-0x0000000000DF1000-memory.dmp

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memory/4424-12-0x0000000000DE0000-0x0000000000DE1000-memory.dmp

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memory/4424-11-0x0000000000DE0000-0x0000000000DE1000-memory.dmp

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memory/4424-29-0x0000000000DE0000-0x0000000000DE1000-memory.dmp

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memory/4424-30-0x0000000000DE0000-0x0000000000DE1000-memory.dmp

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memory/4424-31-0x0000000000DE0000-0x0000000000DE1000-memory.dmp

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memory/4424-33-0x0000000000DE0000-0x0000000000DE1000-memory.dmp

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