c96b41fac848211321861fcf957e5f475a950c56f9024f792e5c9584f1fbd3ef

Analysis

max time kernel
300s
max time network
305s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
22-11-2024 03:36

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General

Target

PC Cleaner.exe
Size

4.4MB
MD5

16a63ddd49552199b3a92b5fe88f804f
SHA1

bb5b1bcecfc8737b3397bc8442a4e483b1df5951
SHA256

b46940adcfefac96db737aa663f44e31e071fb7bffc757f98d811c2d82f1d3b8
SHA512

8ebf6a3ba7c866328ffd8fbd85d1a4946f806cd4a65540e0db389f7f6dadf0666ec8c7980455934234d469c2d8aaf7da7d630bd98640323f717722b62f6176cd
SSDEEP

98304:ywCDueZbuJtHA0QUCb7Yv8b8SIXtiogjiAuC475j:KueA7ZQ9Yv8jdWAS75j

Score

10^/10

discovery evasion persistence

Malware Config

Signatures

Modifies visiblity of hidden/system files in Explorer 2 TTPs 3 IoCs

evasion

Hidden Files and Directories

T1564.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	msiexec.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	w32tm.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	w32tm.exe

Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\Oracle\VirtualBox Guest Additions	msiexec.exe

Adds policy Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run = "\"C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\IEUpdate\\w32tm.exe\""	msiexec.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run = "\"C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\IEUpdate\\w32tm.exe\""	w32tm.exe

Looks for VMWare Tools registry key 2 TTPs 1 IoCs

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\VMware, Inc.\VMware Tools	msiexec.exe

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	msiexec.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	msiexec.exe

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\StartUp\w32tm.lnk	msiexec.exe

Executes dropped EXE 4 IoCs

pid	Process
2692	w32tm.exe
1876	tmp901F.exe
3000	w32tm.exe
2700	tmp901F.exe

Loads dropped DLL 5 IoCs

pid	Process
2936	msiexec.exe
2936	msiexec.exe
2936	msiexec.exe
2936	msiexec.exe
636	cmd.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Run\w32tm = "\"C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\IEUpdate\\w32tm.exe\""	msiexec.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\w32tm = "\"C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\IEUpdate\\w32tm.exe\""	msiexec.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Run\w32tm = "\"C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\IEUpdate\\w32tm.exe\""	w32tm.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\w32tm = "\"C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\IEUpdate\\w32tm.exe\""	w32tm.exe

Blocklisted process makes network request 1 IoCs

flow	pid	Process
2	2936	msiexec.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2896 set thread context of 2936	2896	msiexec.exe	31
PID 1876 set thread context of 2700	1876	tmp901F.exe	38

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 6 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	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tmp901F.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PC Cleaner.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msiexec.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msiexec.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
2064	PING.EXE
636	cmd.exe

Modifies Control Panel 2 IoCs

evasion

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Control Panel\Desktop\SCRNSAVE.EXE = "\"C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\IEUpdate\\w32tm.exe\""	w32tm.exe
Key created	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Control Panel\Desktop	w32tm.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2064	PING.EXE

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
2896	msiexec.exe
2896	msiexec.exe
2936	msiexec.exe
2936	msiexec.exe
2936	msiexec.exe
2936	msiexec.exe
2936	msiexec.exe
2936	msiexec.exe
2936	msiexec.exe
2936	msiexec.exe
2936	msiexec.exe
2936	msiexec.exe
1876	tmp901F.exe
1876	tmp901F.exe

Suspicious behavior: MapViewOfSection 2 IoCs

pid	Process
2692	w32tm.exe
2692	w32tm.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2692	w32tm.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
2692	w32tm.exe

Suspicious use of WriteProcessMemory 50 IoCs

description	pid	Process	procid_target
PID 1680 wrote to memory of 2896	1680	PC Cleaner.exe	30
PID 1680 wrote to memory of 2896	1680	PC Cleaner.exe	30
PID 1680 wrote to memory of 2896	1680	PC Cleaner.exe	30
PID 1680 wrote to memory of 2896	1680	PC Cleaner.exe	30
PID 1680 wrote to memory of 2896	1680	PC Cleaner.exe	30
PID 1680 wrote to memory of 2896	1680	PC Cleaner.exe	30
PID 1680 wrote to memory of 2896	1680	PC Cleaner.exe	30
PID 2896 wrote to memory of 2936	2896	msiexec.exe	31
PID 2896 wrote to memory of 2936	2896	msiexec.exe	31
PID 2896 wrote to memory of 2936	2896	msiexec.exe	31
PID 2896 wrote to memory of 2936	2896	msiexec.exe	31
PID 2896 wrote to memory of 2936	2896	msiexec.exe	31
PID 2896 wrote to memory of 2936	2896	msiexec.exe	31
PID 2896 wrote to memory of 2936	2896	msiexec.exe	31
PID 2896 wrote to memory of 2936	2896	msiexec.exe	31
PID 2896 wrote to memory of 2936	2896	msiexec.exe	31
PID 2896 wrote to memory of 2936	2896	msiexec.exe	31
PID 2896 wrote to memory of 2936	2896	msiexec.exe	31
PID 2896 wrote to memory of 2936	2896	msiexec.exe	31
PID 2896 wrote to memory of 2936	2896	msiexec.exe	31
PID 2936 wrote to memory of 2692	2936	msiexec.exe	32
PID 2936 wrote to memory of 2692	2936	msiexec.exe	32
PID 2936 wrote to memory of 2692	2936	msiexec.exe	32
PID 2936 wrote to memory of 2692	2936	msiexec.exe	32
PID 2936 wrote to memory of 1876	2936	msiexec.exe	33
PID 2936 wrote to memory of 1876	2936	msiexec.exe	33
PID 2936 wrote to memory of 1876	2936	msiexec.exe	33
PID 2936 wrote to memory of 1876	2936	msiexec.exe	33
PID 2936 wrote to memory of 636	2936	msiexec.exe	34
PID 2936 wrote to memory of 636	2936	msiexec.exe	34
PID 2936 wrote to memory of 636	2936	msiexec.exe	34
PID 2936 wrote to memory of 636	2936	msiexec.exe	34
PID 636 wrote to memory of 3000	636	cmd.exe	36
PID 636 wrote to memory of 3000	636	cmd.exe	36
PID 636 wrote to memory of 3000	636	cmd.exe	36
PID 636 wrote to memory of 3000	636	cmd.exe	36
PID 636 wrote to memory of 2064	636	cmd.exe	37
PID 636 wrote to memory of 2064	636	cmd.exe	37
PID 636 wrote to memory of 2064	636	cmd.exe	37
PID 636 wrote to memory of 2064	636	cmd.exe	37
PID 1876 wrote to memory of 2700	1876	tmp901F.exe	38
PID 1876 wrote to memory of 2700	1876	tmp901F.exe	38
PID 1876 wrote to memory of 2700	1876	tmp901F.exe	38
PID 1876 wrote to memory of 2700	1876	tmp901F.exe	38
PID 1876 wrote to memory of 2700	1876	tmp901F.exe	38
PID 1876 wrote to memory of 2700	1876	tmp901F.exe	38
PID 1876 wrote to memory of 2700	1876	tmp901F.exe	38
PID 1876 wrote to memory of 2700	1876	tmp901F.exe	38
PID 1876 wrote to memory of 2700	1876	tmp901F.exe	38
PID 1876 wrote to memory of 2700	1876	tmp901F.exe	38

C:\Users\Admin\AppData\Local\Temp\PC Cleaner.exe
"C:\Users\Admin\AppData\Local\Temp\PC Cleaner.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1680
- C:\Users\Admin\AppData\Local\Temp\msiexec.exe
  msiexec.exe /i C:\Users\Admin\AppData\Local\Temp\MSI67E7.tmp
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2896
- - C:\Users\Admin\AppData\Local\Temp\msiexec.exe
    msiexec.exe /i C:\Users\Admin\AppData\Local\Temp\MSI67E7.tmp
    3⤵
    - Modifies visiblity of hidden/system files in Explorer
    - Looks for VirtualBox Guest Additions in registry
    - Adds policy Run key to start application
    - Looks for VMWare Tools registry key
    - Checks BIOS information in registry
    - Drops startup file
    - Loads dropped DLL
    - Adds Run key to start application
    - Blocklisted process makes network request
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:2936
  - - C:\Users\Admin\AppData\Roaming\Microsoft\Windows\IEUpdate\w32tm.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\IEUpdate\w32tm.exe"
      4⤵
      Modifies visiblity of hidden/system files in Explorer
      Adds policy Run key to start application
      Executes dropped EXE
      Adds Run key to start application
      Modifies Control Panel
      Suspicious behavior: MapViewOfSection
      Suspicious use of FindShellTrayWindow
      Suspicious use of SendNotifyMessage
      PID:2692
  - - C:\Users\Admin\AppData\Local\Temp\tmp901F.exe
      "C:\Users\Admin\AppData\Local\Temp\tmp901F.exe" "C:\Users\Admin\AppData\Local\Temp\msiexec.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of WriteProcessMemory
      PID:1876
    - - C:\Users\Admin\AppData\Local\Temp\tmp901F.exe
        
        "C:\Users\Admin\AppData\Local\Temp\tmp901F.exe" "C:\Users\Admin\AppData\Local\Temp\msiexec.exe"
        5⤵
        Executes dropped EXE
        
        PID:2700
  - - C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c ping 127.0.0.1 >> nul
      4⤵
      Loads dropped DLL
      System Location Discovery: System Language Discovery
      System Network Configuration Discovery: Internet Connection Discovery
      Suspicious use of WriteProcessMemory
      PID:636
    - - C:\Users\Admin\AppData\Roaming\Microsoft\Windows\IEUpdate\w32tm.exe
        
        "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\IEUpdate\w32tm.exe"
        5⤵
        Modifies visiblity of hidden/system files in Explorer
        Executes dropped EXE
        
        PID:3000
    - - C:\Windows\SysWOW64\PING.EXE
        
        ping 127.0.0.1
        5⤵
        System Location Discovery: System Language Discovery
        System Network Configuration Discovery: Internet Connection Discovery
        Runs ping.exe
        
        PID:2064

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

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Modify Registry

T1112

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Query Registry

T1012

Remote System Discovery

T1018

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

Virtualization/Sandbox Evasion

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\$Recycle.bin\S-1-5-21-3692679935-4019334568-335155002-1000\$ast-S-1-5-21-3692679935-4019334568-335155002-1000\5hnR7dhKyh9_Evoj0QwDbaU.dat

Filesize
21KB

MD5
cd83037df42f614d3899a1eacb4760f5

SHA1
5e2417ac504171bf21ddca6a27a1387c2ea83a3f

SHA256
32d51ee9fc7b137acbc50975afd05ffae8f8a0cd7cc052452053bde6a5115a78

SHA512
748d41d2774ed5834c7c2709d8fe5c79dfc4810874cdb76bf3f58ff929ef6d802f5109ed8104ca8301771951543ac09e4c3198b5906e8b2bc2ebcaa97dd79042

Download Submit
C:\$Recycle.bin\S-1-5-21-3692679935-4019334568-335155002-1000\$ast-S-1-5-21-3692679935-4019334568-335155002-1000\UHzAzdBaQuEVjTaXENSnmGnm.dat

Filesize
5KB

MD5
e15aebc82952f380f59f11f43054f17a

SHA1
890c0633927369e62cc49f9b985d630cf93119d0

SHA256
7d195775090e4d09d97f3a2d2a6081d35a7c4cfb7adb49ff01c2b03052aa7bdd

SHA512
665cbead47454e6f697c929a86838c504fe1e83c885d5a9f33c48306dc489d1f65c44222a66dbc4242bdafc91190a525fe554f06d2b26ed9dc425631cd8f1085

Download Submit
C:\$Recycle.bin\S-1-5-21-3692679935-4019334568-335155002-1000\$ast-S-1-5-21-3692679935-4019334568-335155002-1000\tw5btYTgoTkpZteCA.dat

Filesize
130KB

MD5
d4f33588f6caa751b2362c6f27ccbb78

SHA1
e939be159c4d7fa1ba49615d13117d09fc22cdbc

SHA256
c0d65fafc7714bfd2c9942ded8a3ebdb2aa57f3489b54eb8f4e0ca121eedb35b

SHA512
24b55012473f1f3eb198605f9b78bc45e4ad1674da20b5b2cdc18e5e9c42556d8ee1fa1f5376a02e78fc93a7150afc7649cdde952f5e1292f42f671adaa583ec

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp901F.exe

Filesize
401KB

MD5
8028ee3776ac68bb5789575e5a904465

SHA1
d142f9a30280f31b173080388bc04c71b6c45cc6

SHA256
f5096a51fdc054c4a217966b22f827a921d50a12436aa995d6f4180bdc4ba420

SHA512
33b988d5d80c072a12454a4eb49a70c93ffb3c418ae4a3ef61f1a2d8e81b0ee1e590e176ccb5391e5e7237822f022151fe4a3d7b979d301d7b1c41d5a544118a

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\StartUp\w32tm.lnk

Filesize
1KB

MD5
f2510bcdebffecb50bc3e0f4ca111f03

SHA1
85b1aa78da9675bc5cdfb2dfa506f525896d8e66

SHA256
2a1a856ec03ab89af185121cd799d44b68514e084a822d0c3423cd3c17039a33

SHA512
212679d776362ae284bc8e0bf743fc1ac3611b397a3447427ba5fb7abe7d8be4077a2e69f490d2bd8ea8817ed6ab35182a301c705dbcef63065e930a23ccf207

Download Submit
\Users\Admin\AppData\Roaming\Microsoft\Windows\IEUpdate\w32tm.exe

Filesize
130KB

MD5
65ff24f06707a6bc04d634d81de21b62

SHA1
9b67ac725f4943bd5efef3a21dac34fde9dea321

SHA256
c55c23f45448d73e5095f5678bd45a7993154b8818d5b29a2e02119c7612f3ba

SHA512
4d84346035ff5a9e58203a4c2a9499dcb735dba29054e4cd0eb422b695621d3e7f25c45053e2ca02688cc8ba54ddcc1bc03e0c7b54e6f068895d60d1bfd52138

Download Submit
memory/1876-81-0x0000000000400000-0x0000000000469000-memory.dmp

Filesize
420KB

Download
memory/1876-66-0x0000000000400000-0x0000000000469000-memory.dmp

Filesize
420KB

Download
memory/2692-64-0x0000000001EE0000-0x0000000001EEB000-memory.dmp

Filesize
44KB

Download
memory/2692-62-0x0000000000100000-0x0000000000101000-memory.dmp

Filesize
4KB

Download
memory/2692-65-0x0000000001EE0000-0x0000000001EEB000-memory.dmp

Filesize
44KB

Download
memory/2700-82-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/2700-78-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2896-1-0x0000000000240000-0x0000000000276000-memory.dmp

Filesize
216KB

Download
memory/2936-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2936-34-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/2936-3-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/2936-6-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/2936-8-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/2936-14-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/2936-16-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/2936-18-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/2936-10-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/2936-5-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download