74d1eff84e7c043b96e2694cd9c4aab19b377d858f281b54ace68e1a1a2e95de

Analysis

max time kernel
119s
max time network
120s
platform
windows7_x64
resource
win7-20240705-en
resource tags

arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
submitted
21-08-2024 01:39

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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
1544	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	iWinGames.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AdminWorker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WebInstaller.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	iWinGames.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	AdminWorker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	regsvr32.exe

NSIS installer 2 IoCs

installer

resource	yara_rule
behavioral17/files/0x000500000001a4b6-2.dat	nsis_installer_1
behavioral17/files/0x000500000001a4b6-2.dat	nsis_installer_2

Modifies registry class 6 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3502430532-24693940-2469786940-1000_CLASSES\Software\Microsoft\Windows\CurrentVersion\GameUX\GamesToFindOnWindowsUpgrade	Au_.exe
Key created	\REGISTRY\USER\S-1-5-21-3502430532-24693940-2469786940-1000_CLASSES\Software	Au_.exe
Key created	\REGISTRY\USER\S-1-5-21-3502430532-24693940-2469786940-1000_CLASSES\Software\Microsoft	Au_.exe
Key created	\REGISTRY\USER\S-1-5-21-3502430532-24693940-2469786940-1000_CLASSES\Software\Microsoft\Windows	Au_.exe
Key created	\REGISTRY\USER\S-1-5-21-3502430532-24693940-2469786940-1000_CLASSES\Software\Microsoft\Windows\CurrentVersion	Au_.exe
Key created	\REGISTRY\USER\S-1-5-21-3502430532-24693940-2469786940-1000_CLASSES\Software\Microsoft\Windows\CurrentVersion\GameUX	Au_.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
280	AdminWorker.exe
280	AdminWorker.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2744	Au_.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	280	AdminWorker.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2884	iWinGames.exe
2604	iWinGames.exe

Suspicious use of WriteProcessMemory 60 IoCs

description	pid	Process	procid_target
PID 1544 wrote to memory of 2744	1544	Uninstall.exe	31
PID 1544 wrote to memory of 2744	1544	Uninstall.exe	31
PID 1544 wrote to memory of 2744	1544	Uninstall.exe	31
PID 1544 wrote to memory of 2744	1544	Uninstall.exe	31
PID 2744 wrote to memory of 2968	2744	Au_.exe	32
PID 2744 wrote to memory of 2968	2744	Au_.exe	32
PID 2744 wrote to memory of 2968	2744	Au_.exe	32
PID 2744 wrote to memory of 2968	2744	Au_.exe	32
PID 2744 wrote to memory of 2820	2744	Au_.exe	33
PID 2744 wrote to memory of 2820	2744	Au_.exe	33
PID 2744 wrote to memory of 2820	2744	Au_.exe	33
PID 2744 wrote to memory of 2820	2744	Au_.exe	33
PID 2744 wrote to memory of 2768	2744	Au_.exe	34
PID 2744 wrote to memory of 2768	2744	Au_.exe	34
PID 2744 wrote to memory of 2768	2744	Au_.exe	34
PID 2744 wrote to memory of 2768	2744	Au_.exe	34
PID 2744 wrote to memory of 2584	2744	Au_.exe	35
PID 2744 wrote to memory of 2584	2744	Au_.exe	35
PID 2744 wrote to memory of 2584	2744	Au_.exe	35
PID 2744 wrote to memory of 2584	2744	Au_.exe	35
PID 2744 wrote to memory of 2584	2744	Au_.exe	35
PID 2744 wrote to memory of 2584	2744	Au_.exe	35
PID 2744 wrote to memory of 2584	2744	Au_.exe	35
PID 2584 wrote to memory of 2912	2584	WebInstaller.exe	36
PID 2584 wrote to memory of 2912	2584	WebInstaller.exe	36
PID 2584 wrote to memory of 2912	2584	WebInstaller.exe	36
PID 2584 wrote to memory of 2912	2584	WebInstaller.exe	36
PID 2584 wrote to memory of 2912	2584	WebInstaller.exe	36
PID 2584 wrote to memory of 2912	2584	WebInstaller.exe	36
PID 2584 wrote to memory of 2912	2584	WebInstaller.exe	36
PID 2744 wrote to memory of 2884	2744	Au_.exe	37
PID 2744 wrote to memory of 2884	2744	Au_.exe	37
PID 2744 wrote to memory of 2884	2744	Au_.exe	37
PID 2744 wrote to memory of 2884	2744	Au_.exe	37
PID 2804 wrote to memory of 2604	2804	taskeng.exe	39
PID 2804 wrote to memory of 2604	2804	taskeng.exe	39
PID 2804 wrote to memory of 2604	2804	taskeng.exe	39
PID 2804 wrote to memory of 2604	2804	taskeng.exe	39
PID 2744 wrote to memory of 3064	2744	Au_.exe	40
PID 2744 wrote to memory of 3064	2744	Au_.exe	40
PID 2744 wrote to memory of 3064	2744	Au_.exe	40
PID 2744 wrote to memory of 3064	2744	Au_.exe	40
PID 2744 wrote to memory of 1660	2744	Au_.exe	41
PID 2744 wrote to memory of 1660	2744	Au_.exe	41
PID 2744 wrote to memory of 1660	2744	Au_.exe	41
PID 2744 wrote to memory of 1660	2744	Au_.exe	41
PID 2744 wrote to memory of 1660	2744	Au_.exe	41
PID 2744 wrote to memory of 1660	2744	Au_.exe	41
PID 2744 wrote to memory of 1660	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
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 280	2744	Au_.exe	43
PID 2744 wrote to memory of 280	2744	Au_.exe	43
PID 2744 wrote to memory of 280	2744	Au_.exe	43
PID 2744 wrote to memory of 280	2744	Au_.exe	43

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:1544
- 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:2968
- - 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:2820
- - 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:2768
- - 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:2584
  - - C:\Windows\SysWOW64\regsvr32.exe
      regsvr32 /s /u "C:\Users\Admin\AppData\Local\Temp\iWinGamesHookIE.dll"
      4⤵
      System Location Discovery: System Language Discovery
      PID:2912
- - 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:2884
- - 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:3064
- - 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:1660
- - 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:1780
- - 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:280

C:\Windows\system32\taskeng.exe
taskeng.exe {9FAC820A-E69E-4B5F-AE56-66B86DD6CDC1} S-1-5-21-3502430532-24693940-2469786940-1000:PSBQWFYT\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2804
- 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:2604

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
69d6f4f1c0e8d878d5e8bfb4f25685f8

SHA1
ae7a5e960a5eae9b672a7a436bb576ff591f82fa

SHA256
224cb1c214e5cb583acdaa88fadd6a5db626cd61fe9b376609c0994c4d8953bf

SHA512
d76bfb0170dad29b9e0d2fd13b1ad7b6d1716af55e2417065c4877a1bfcda79866e771d08528e048dd7ff9c5b5117b181c338dec441c4c774c587872a89be4e8

Download Submit
\Users\Admin\AppData\Local\Temp\nsj35C.tmp\GameuxInstallHelper.dll

Filesize
94KB

MD5
4d3ac88054df63fc810427bdaa96c458

SHA1
e4d554e03ba91f6b53a2a80253b339f56e303c94

SHA256
b07ffcd0af80f6b9fba09abe816ba2f0ff0d336639f1768fc317291bc635ece6

SHA512
d4732ad89bbb19b316dff1b9c534acf98bb985c89d1295f08e24b21531123426500b3712979dda2f0e941a5969c0cbca15bbd52f6c167653f96a494a6677ca54

Download Submit
\Users\Admin\AppData\Local\Temp\nsj35C.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