a50575b36489d8366f7d72df5bae30a17ae7872220e0685ecdb55bdea6a1b2ae

Analysis

max time kernel
119s
max time network
120s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
21/08/2024, 14:06

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General

Target

Uninstall.exe
Size

129KB
MD5

49c9d6cadd02bfff54851d0b0cafd557
SHA1

9bb1dbff1ff7fcf171610133354ffeab1f522d82
SHA256

c7550a63d4547fb15d9eb84b10bd7ed68e71e860604da1b7fd3c375ce58f0cbe
SHA512

c982f388f605bbdb784b04078a2e2cce7794867b45cc89359425efa7ab3101ba9410b3867554da0f2ebc62895e8ed0ff6211fb1e0408860962907a49942f76eb
SSDEEP

3072:w+8uyHOQXJoHS4Z5t2Zip6dmDHgG2ojdotyVnwz:w8+/4fQsp6dAT2ojdoIBwz

Score

7^/10

discovery persistence

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
2744	Au_.exe

Executes dropped EXE 1 IoCs

pid	Process
2744	Au_.exe

Loads dropped DLL 3 IoCs

pid	Process
3052	Uninstall.exe
2744	Au_.exe
2744	Au_.exe

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\RunOnce\iWinArcadeIECleanup = "C:\\Users\\Admin\\AppData\\Local\\Temp\\iWinArcadeAutocleanup.bat"	Au_.exe

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 13 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	Au_.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	regsvr32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	regsvr32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AdminWorker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	regsvr32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	iWinGames.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	iWinGames.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AdminWorker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AdminWorker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Uninstall.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	iWinTrusted.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WebInstaller.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AdminWorker.exe

NSIS installer 2 IoCs

installer

resource	yara_rule
behavioral17/files/0x000500000001a51d-2.dat	nsis_installer_1
behavioral17/files/0x000500000001a51d-2.dat	nsis_installer_2

Modifies registry class 6 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000_CLASSES\Software\Microsoft\Windows	Au_.exe
Key created	\REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000_CLASSES\Software\Microsoft\Windows\CurrentVersion	Au_.exe
Key created	\REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000_CLASSES\Software\Microsoft\Windows\CurrentVersion\GameUX	Au_.exe
Key created	\REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000_CLASSES\Software\Microsoft\Windows\CurrentVersion\GameUX\GamesToFindOnWindowsUpgrade	Au_.exe
Key created	\REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000_CLASSES\Software	Au_.exe
Key created	\REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000_CLASSES\Software\Microsoft	Au_.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1780	AdminWorker.exe
1780	AdminWorker.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2744	Au_.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1780	AdminWorker.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2656	iWinGames.exe
2724	iWinGames.exe

Suspicious use of WriteProcessMemory 60 IoCs

description	pid	Process	procid_target
PID 3052 wrote to memory of 2744	3052	Uninstall.exe	30
PID 3052 wrote to memory of 2744	3052	Uninstall.exe	30
PID 3052 wrote to memory of 2744	3052	Uninstall.exe	30
PID 3052 wrote to memory of 2744	3052	Uninstall.exe	30
PID 2744 wrote to memory of 2688	2744	Au_.exe	31
PID 2744 wrote to memory of 2688	2744	Au_.exe	31
PID 2744 wrote to memory of 2688	2744	Au_.exe	31
PID 2744 wrote to memory of 2688	2744	Au_.exe	31
PID 2744 wrote to memory of 2192	2744	Au_.exe	32
PID 2744 wrote to memory of 2192	2744	Au_.exe	32
PID 2744 wrote to memory of 2192	2744	Au_.exe	32
PID 2744 wrote to memory of 2192	2744	Au_.exe	32
PID 2744 wrote to memory of 3048	2744	Au_.exe	33
PID 2744 wrote to memory of 3048	2744	Au_.exe	33
PID 2744 wrote to memory of 3048	2744	Au_.exe	33
PID 2744 wrote to memory of 3048	2744	Au_.exe	33
PID 2744 wrote to memory of 2716	2744	Au_.exe	34
PID 2744 wrote to memory of 2716	2744	Au_.exe	34
PID 2744 wrote to memory of 2716	2744	Au_.exe	34
PID 2744 wrote to memory of 2716	2744	Au_.exe	34
PID 2744 wrote to memory of 2716	2744	Au_.exe	34
PID 2744 wrote to memory of 2716	2744	Au_.exe	34
PID 2744 wrote to memory of 2716	2744	Au_.exe	34
PID 2716 wrote to memory of 2096	2716	WebInstaller.exe	35
PID 2716 wrote to memory of 2096	2716	WebInstaller.exe	35
PID 2716 wrote to memory of 2096	2716	WebInstaller.exe	35
PID 2716 wrote to memory of 2096	2716	WebInstaller.exe	35
PID 2716 wrote to memory of 2096	2716	WebInstaller.exe	35
PID 2716 wrote to memory of 2096	2716	WebInstaller.exe	35
PID 2716 wrote to memory of 2096	2716	WebInstaller.exe	35
PID 2744 wrote to memory of 2656	2744	Au_.exe	36
PID 2744 wrote to memory of 2656	2744	Au_.exe	36
PID 2744 wrote to memory of 2656	2744	Au_.exe	36
PID 2744 wrote to memory of 2656	2744	Au_.exe	36
PID 2584 wrote to memory of 2724	2584	taskeng.exe	38
PID 2584 wrote to memory of 2724	2584	taskeng.exe	38
PID 2584 wrote to memory of 2724	2584	taskeng.exe	38
PID 2584 wrote to memory of 2724	2584	taskeng.exe	38
PID 2744 wrote to memory of 1848	2744	Au_.exe	39
PID 2744 wrote to memory of 1848	2744	Au_.exe	39
PID 2744 wrote to memory of 1848	2744	Au_.exe	39
PID 2744 wrote to memory of 1848	2744	Au_.exe	39
PID 2744 wrote to memory of 2244	2744	Au_.exe	40
PID 2744 wrote to memory of 2244	2744	Au_.exe	40
PID 2744 wrote to memory of 2244	2744	Au_.exe	40
PID 2744 wrote to memory of 2244	2744	Au_.exe	40
PID 2744 wrote to memory of 2244	2744	Au_.exe	40
PID 2744 wrote to memory of 2244	2744	Au_.exe	40
PID 2744 wrote to memory of 2244	2744	Au_.exe	40
PID 2744 wrote to memory of 2272	2744	Au_.exe	41
PID 2744 wrote to memory of 2272	2744	Au_.exe	41
PID 2744 wrote to memory of 2272	2744	Au_.exe	41
PID 2744 wrote to memory of 2272	2744	Au_.exe	41
PID 2744 wrote to memory of 2272	2744	Au_.exe	41
PID 2744 wrote to memory of 2272	2744	Au_.exe	41
PID 2744 wrote to memory of 2272	2744	Au_.exe	41
PID 2744 wrote to memory of 1780	2744	Au_.exe	42
PID 2744 wrote to memory of 1780	2744	Au_.exe	42
PID 2744 wrote to memory of 1780	2744	Au_.exe	42
PID 2744 wrote to memory of 1780	2744	Au_.exe	42

C:\Users\Admin\AppData\Local\Temp\Uninstall.exe
"C:\Users\Admin\AppData\Local\Temp\Uninstall.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3052
- C:\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe
  "C:\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe" _?=C:\Users\Admin\AppData\Local\Temp\
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - Loads dropped DLL
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of WriteProcessMemory
  PID:2744
- - C:\Users\Admin\AppData\Local\Temp\AdminWorker.exe
    "C:\Users\Admin\AppData\Local\Temp\AdminWorker.exe" DelArcadeFromFireWallExceptions
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2688
- - C:\Users\Admin\AppData\Local\Temp\AdminWorker.exe
    "C:\Users\Admin\AppData\Local\Temp\AdminWorker.exe" convertShortcutsToLinks
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2192
- - C:\Users\Admin\AppData\Local\Temp\iWinTrusted.exe
    "C:\Users\Admin\AppData\Local\Temp\iWinTrusted.exe" -remove
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3048
- - C:\Users\Admin\AppData\Local\Temp\WebInstaller.exe
    "C:\Users\Admin\AppData\Local\Temp\WebInstaller.exe" -uninstall
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2716
  - - C:\Windows\SysWOW64\regsvr32.exe
      regsvr32 /s /u "C:\Users\Admin\AppData\Local\Temp\iWinGamesHookIE.dll"
      4⤵
      System Location Discovery: System Language Discovery
      PID:2096
- - C:\Users\Admin\AppData\Local\Temp\iWinGames.exe
    "C:\Users\Admin\AppData\Local\Temp\iWinGames.exe" /trackArcadeUninstall_reason_0
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    PID:2656
- - C:\Users\Admin\AppData\Local\Temp\AdminWorker.exe
    "C:\Users\Admin\AppData\Local\Temp\AdminWorker.exe" uninstallDesktopAlerts
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1848
- - C:\Windows\SysWOW64\regsvr32.exe
    "C:\Windows\system32\regsvr32.exe" /s /u "C:\Users\Admin\AppData\Local\Temp\iWinGamesHookIE.dll"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2244
- - C:\Windows\SysWOW64\regsvr32.exe
    "C:\Windows\system32\regsvr32.exe" /s /u "C:\Users\Admin\AppData\Local\Temp\iWinInfo.dll"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2272
- - C:\Users\Admin\AppData\Local\Temp\AdminWorker.exe
    "C:\Users\Admin\AppData\Local\Temp\AdminWorker.exe" KillProcess iWinGames.exe
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1780

C:\Windows\system32\taskeng.exe
taskeng.exe {ECBB2FD9-3B2F-4A6B-9A15-9C7477705316} S-1-5-21-1506706701-1246725540-2219210854-1000:MUYDDIIS\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2584
- C:\Users\Admin\AppData\Local\Temp\iWinGames.exe
  C:\Users\Admin\AppData\Local\Temp\iWinGames.exe /trackArcadeUninstall_reason_0
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:2724

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

Modify Registry

T1112

Credential Access

Discovery

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\iWinGames\AdminWorker.log

Filesize
4KB

MD5
bb7ed86fc243e98d945d2ff2e66a88e0

SHA1
de9697578bf7ab47c5b175cc4ba3c664e975de9f

SHA256
b4f2db172432dd1853db60dc8169d1c4fa601968e2fe66e744813ccaa7d0a21c

SHA512
e8222b69e1350c4736f969c7c6de233cc6f8e48e5c43723761eb1dba853188447e0e91203e27b9f242113ffe1470ad7e904a979c1cf3187789175d7f28129b67

Download Submit
\Users\Admin\AppData\Local\Temp\nsj6AA6.tmp\GameuxInstallHelper.dll

Filesize
94KB

MD5
4d3ac88054df63fc810427bdaa96c458

SHA1
e4d554e03ba91f6b53a2a80253b339f56e303c94

SHA256
b07ffcd0af80f6b9fba09abe816ba2f0ff0d336639f1768fc317291bc635ece6

SHA512
d4732ad89bbb19b316dff1b9c534acf98bb985c89d1295f08e24b21531123426500b3712979dda2f0e941a5969c0cbca15bbd52f6c167653f96a494a6677ca54

Download Submit
\Users\Admin\AppData\Local\Temp\nsj6AA6.tmp\System.dll

Filesize
11KB

MD5
c17103ae9072a06da581dec998343fc1

SHA1
b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

SHA256
dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

SHA512
d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

Download Submit
\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe

Filesize
129KB

MD5
49c9d6cadd02bfff54851d0b0cafd557

SHA1
9bb1dbff1ff7fcf171610133354ffeab1f522d82

SHA256
c7550a63d4547fb15d9eb84b10bd7ed68e71e860604da1b7fd3c375ce58f0cbe

SHA512
c982f388f605bbdb784b04078a2e2cce7794867b45cc89359425efa7ab3101ba9410b3867554da0f2ebc62895e8ed0ff6211fb1e0408860962907a49942f76eb

Download Submit
memory/2272-12-0x00000000741B0000-0x00000000742AA000-memory.dmp

Filesize
1000KB

Download