b62a3ac2a5850cfe67e4b720979ef147f3de70a8dd9fc5e534c8b79433a6a966

Analysis

max time kernel
118s
max time network
122s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
20/06/2024, 18:23

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target

Uninstall.exe
Size

129KB
MD5

49c9d6cadd02bfff54851d0b0cafd557
SHA1

9bb1dbff1ff7fcf171610133354ffeab1f522d82
SHA256

c7550a63d4547fb15d9eb84b10bd7ed68e71e860604da1b7fd3c375ce58f0cbe
SHA512

c982f388f605bbdb784b04078a2e2cce7794867b45cc89359425efa7ab3101ba9410b3867554da0f2ebc62895e8ed0ff6211fb1e0408860962907a49942f76eb
SSDEEP

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

Score

7^/10

persistence

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
1968	Au_.exe

Executes dropped EXE 1 IoCs

pid	Process
1968	Au_.exe

Loads dropped DLL 3 IoCs

pid	Process
2084	Uninstall.exe
1968	Au_.exe
1968	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

NSIS installer 2 IoCs

installer

resource	yara_rule
behavioral17/files/0x003400000001565a-2.dat	nsis_installer_1
behavioral17/files/0x003400000001565a-2.dat	nsis_installer_2

Modifies registry class 6 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\Software\Microsoft\Windows\CurrentVersion\GameUX\GamesToFindOnWindowsUpgrade	Au_.exe
Key created	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\Software	Au_.exe
Key created	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\Software\Microsoft	Au_.exe
Key created	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\Software\Microsoft\Windows	Au_.exe
Key created	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\Software\Microsoft\Windows\CurrentVersion	Au_.exe
Key created	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\Software\Microsoft\Windows\CurrentVersion\GameUX	Au_.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2468	AdminWorker.exe
2468	AdminWorker.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1968	Au_.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2468	AdminWorker.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2548	iWinGames.exe
2668	iWinGames.exe

Suspicious use of WriteProcessMemory 60 IoCs

description	pid	Process	procid_target
PID 2084 wrote to memory of 1968	2084	Uninstall.exe	28
PID 2084 wrote to memory of 1968	2084	Uninstall.exe	28
PID 2084 wrote to memory of 1968	2084	Uninstall.exe	28
PID 2084 wrote to memory of 1968	2084	Uninstall.exe	28
PID 1968 wrote to memory of 2632	1968	Au_.exe	29
PID 1968 wrote to memory of 2632	1968	Au_.exe	29
PID 1968 wrote to memory of 2632	1968	Au_.exe	29
PID 1968 wrote to memory of 2632	1968	Au_.exe	29
PID 1968 wrote to memory of 2656	1968	Au_.exe	30
PID 1968 wrote to memory of 2656	1968	Au_.exe	30
PID 1968 wrote to memory of 2656	1968	Au_.exe	30
PID 1968 wrote to memory of 2656	1968	Au_.exe	30
PID 1968 wrote to memory of 2764	1968	Au_.exe	31
PID 1968 wrote to memory of 2764	1968	Au_.exe	31
PID 1968 wrote to memory of 2764	1968	Au_.exe	31
PID 1968 wrote to memory of 2764	1968	Au_.exe	31
PID 1968 wrote to memory of 2572	1968	Au_.exe	32
PID 1968 wrote to memory of 2572	1968	Au_.exe	32
PID 1968 wrote to memory of 2572	1968	Au_.exe	32
PID 1968 wrote to memory of 2572	1968	Au_.exe	32
PID 1968 wrote to memory of 2572	1968	Au_.exe	32
PID 1968 wrote to memory of 2572	1968	Au_.exe	32
PID 1968 wrote to memory of 2572	1968	Au_.exe	32
PID 2572 wrote to memory of 2544	2572	WebInstaller.exe	33
PID 2572 wrote to memory of 2544	2572	WebInstaller.exe	33
PID 2572 wrote to memory of 2544	2572	WebInstaller.exe	33
PID 2572 wrote to memory of 2544	2572	WebInstaller.exe	33
PID 2572 wrote to memory of 2544	2572	WebInstaller.exe	33
PID 2572 wrote to memory of 2544	2572	WebInstaller.exe	33
PID 2572 wrote to memory of 2544	2572	WebInstaller.exe	33
PID 1968 wrote to memory of 2548	1968	Au_.exe	34
PID 1968 wrote to memory of 2548	1968	Au_.exe	34
PID 1968 wrote to memory of 2548	1968	Au_.exe	34
PID 1968 wrote to memory of 2548	1968	Au_.exe	34
PID 2532 wrote to memory of 2668	2532	taskeng.exe	36
PID 2532 wrote to memory of 2668	2532	taskeng.exe	36
PID 2532 wrote to memory of 2668	2532	taskeng.exe	36
PID 2532 wrote to memory of 2668	2532	taskeng.exe	36
PID 1968 wrote to memory of 2488	1968	Au_.exe	37
PID 1968 wrote to memory of 2488	1968	Au_.exe	37
PID 1968 wrote to memory of 2488	1968	Au_.exe	37
PID 1968 wrote to memory of 2488	1968	Au_.exe	37
PID 1968 wrote to memory of 2584	1968	Au_.exe	38
PID 1968 wrote to memory of 2584	1968	Au_.exe	38
PID 1968 wrote to memory of 2584	1968	Au_.exe	38
PID 1968 wrote to memory of 2584	1968	Au_.exe	38
PID 1968 wrote to memory of 2584	1968	Au_.exe	38
PID 1968 wrote to memory of 2584	1968	Au_.exe	38
PID 1968 wrote to memory of 2584	1968	Au_.exe	38
PID 1968 wrote to memory of 2832	1968	Au_.exe	39
PID 1968 wrote to memory of 2832	1968	Au_.exe	39
PID 1968 wrote to memory of 2832	1968	Au_.exe	39
PID 1968 wrote to memory of 2832	1968	Au_.exe	39
PID 1968 wrote to memory of 2832	1968	Au_.exe	39
PID 1968 wrote to memory of 2832	1968	Au_.exe	39
PID 1968 wrote to memory of 2832	1968	Au_.exe	39
PID 1968 wrote to memory of 2468	1968	Au_.exe	40
PID 1968 wrote to memory of 2468	1968	Au_.exe	40
PID 1968 wrote to memory of 2468	1968	Au_.exe	40
PID 1968 wrote to memory of 2468	1968	Au_.exe	40

C:\Users\Admin\AppData\Local\Temp\Uninstall.exe
"C:\Users\Admin\AppData\Local\Temp\Uninstall.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2084
- 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
  - Modifies registry class
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of WriteProcessMemory
  PID:1968
- - C:\Users\Admin\AppData\Local\Temp\AdminWorker.exe
    "C:\Users\Admin\AppData\Local\Temp\AdminWorker.exe" DelArcadeFromFireWallExceptions
    3⤵
    PID:2632
- - C:\Users\Admin\AppData\Local\Temp\AdminWorker.exe
    "C:\Users\Admin\AppData\Local\Temp\AdminWorker.exe" convertShortcutsToLinks
    3⤵
    PID:2656
- - C:\Users\Admin\AppData\Local\Temp\iWinTrusted.exe
    "C:\Users\Admin\AppData\Local\Temp\iWinTrusted.exe" -remove
    3⤵
    PID:2764
- - C:\Users\Admin\AppData\Local\Temp\WebInstaller.exe
    "C:\Users\Admin\AppData\Local\Temp\WebInstaller.exe" -uninstall
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2572
  - - C:\Windows\SysWOW64\regsvr32.exe
      regsvr32 /s /u "C:\Users\Admin\AppData\Local\Temp\iWinGamesHookIE.dll"
      4⤵
      PID:2544
- - C:\Users\Admin\AppData\Local\Temp\iWinGames.exe
    "C:\Users\Admin\AppData\Local\Temp\iWinGames.exe" /trackArcadeUninstall_reason_0
    3⤵
    - Suspicious use of SetWindowsHookEx
    PID:2548
- - C:\Users\Admin\AppData\Local\Temp\AdminWorker.exe
    "C:\Users\Admin\AppData\Local\Temp\AdminWorker.exe" uninstallDesktopAlerts
    3⤵
    PID:2488
- - C:\Windows\SysWOW64\regsvr32.exe
    "C:\Windows\system32\regsvr32.exe" /s /u "C:\Users\Admin\AppData\Local\Temp\iWinGamesHookIE.dll"
    3⤵
    PID:2584
- - C:\Windows\SysWOW64\regsvr32.exe
    "C:\Windows\system32\regsvr32.exe" /s /u "C:\Users\Admin\AppData\Local\Temp\iWinInfo.dll"
    3⤵
    PID:2832
- - C:\Users\Admin\AppData\Local\Temp\AdminWorker.exe
    "C:\Users\Admin\AppData\Local\Temp\AdminWorker.exe" KillProcess iWinGames.exe
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2468

C:\Windows\system32\taskeng.exe
taskeng.exe {70768273-4805-428B-BA1F-F65F1E190298} S-1-5-21-2721934792-624042501-2768869379-1000:BISMIZHX\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2532
- C:\Users\Admin\AppData\Local\Temp\iWinGames.exe
  C:\Users\Admin\AppData\Local\Temp\iWinGames.exe /trackArcadeUninstall_reason_0
  2⤵
  - Suspicious use of SetWindowsHookEx
  PID:2668

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\iWinGames\AdminWorker.log

Filesize
4KB

MD5
234d89c9713f9c7de6889b415fc36ea7

SHA1
005c31a7943e2dc363dfa9a7422b13601d8c8222

SHA256
13c38539188c73ca552d0e806dceaa242ab09e943f2bf9240b8e1dcd383620fa

SHA512
70449df974709121e5659741193b2c1f7fb5317c40e5f4333f537ca1d6b2089be4456b89b19d01bdea892a02ab5ae1da2d95071c5ad5f2ed73fa92ddc18ead80

Download Submit
\Users\Admin\AppData\Local\Temp\nsd2FC8.tmp\GameuxInstallHelper.dll

Filesize
94KB

MD5
4d3ac88054df63fc810427bdaa96c458

SHA1
e4d554e03ba91f6b53a2a80253b339f56e303c94

SHA256
b07ffcd0af80f6b9fba09abe816ba2f0ff0d336639f1768fc317291bc635ece6

SHA512
d4732ad89bbb19b316dff1b9c534acf98bb985c89d1295f08e24b21531123426500b3712979dda2f0e941a5969c0cbca15bbd52f6c167653f96a494a6677ca54

Download Submit
\Users\Admin\AppData\Local\Temp\nsd2FC8.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/2832-12-0x0000000074270000-0x000000007436A000-memory.dmp

Filesize
1000KB

Download