7be4b480f8901d491a111cfaa52ce2e385e53d40ecf691549124428782cb92ac

Analysis

max time kernel
155s
max time network
162s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
24/04/2024, 17:10

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General

Target

Perm_Tool (1).exe
Size

4.5MB
MD5

b699fb1e93b8af5c782daef0df8f643a
SHA1

22cd3599ee1914d8cacd9f2b2e777c013d853d80
SHA256

7be4b480f8901d491a111cfaa52ce2e385e53d40ecf691549124428782cb92ac
SHA512

05eff6ce8edf7d04d52134b736aa5bd2fa146b589176282b7c705d0c3bd66f54e21572116d8563f695cf6ea6862a1b46c1ef1267d28e6727bc9b20fe3de7129b
SSDEEP

98304:tbKj5g4vHzvT8lKF3eAxFPKJAO11GaNluxLpyLZnjAHMOnyH+:oFNvTekpASmG1w1AHMOA+

Score

10^/10

evasion persistence themida

Malware Config

Signatures

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

evasion

Hidden Files and Directories

T1564.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	svchost.exe

Executes dropped EXE 6 IoCs

pid	Process
1272	perm_tool (1).exe
3876	icsys.icn.exe
4764	explorer.exe
2728	spoolsv.exe
3960	svchost.exe
2288	spoolsv.exe

Themida packer 2 IoCs

Detects Themida, an advanced Windows software protection system.

themida

resource	yara_rule
behavioral2/files/0x0007000000023253-8.dat	themida
behavioral2/memory/1272-13-0x00007FF79B9D0000-0x00007FF79C52D000-memory.dmp	themida

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\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Explorer = "c:\\windows\\resources\\themes\\explorer.exe RO"	explorer.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Svchost = "c:\\windows\\resources\\svchost.exe RO"	explorer.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Explorer = "c:\\windows\\resources\\themes\\explorer.exe RO"	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Svchost = "c:\\windows\\resources\\svchost.exe RO"	svchost.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\explorer.exe	explorer.exe
File opened for modification	C:\Windows\SysWOW64\explorer.exe	svchost.exe

Drops file in Windows directory 5 IoCs

description	ioc	Process
File opened for modification	\??\c:\windows\resources\spoolsv.exe	explorer.exe
File opened for modification	\??\c:\windows\resources\svchost.exe	spoolsv.exe
File opened for modification	C:\Windows\Resources\tjud.exe	explorer.exe
File opened for modification	C:\Windows\Resources\Themes\icsys.icn.exe	Perm_Tool (1).exe
File opened for modification	\??\c:\windows\resources\themes\explorer.exe	icsys.icn.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
1504	Perm_Tool (1).exe
1504	Perm_Tool (1).exe
1504	Perm_Tool (1).exe
1504	Perm_Tool (1).exe
1504	Perm_Tool (1).exe
1504	Perm_Tool (1).exe
1504	Perm_Tool (1).exe
1504	Perm_Tool (1).exe
1504	Perm_Tool (1).exe
1504	Perm_Tool (1).exe
1504	Perm_Tool (1).exe
1504	Perm_Tool (1).exe
1504	Perm_Tool (1).exe
1504	Perm_Tool (1).exe
1504	Perm_Tool (1).exe
1504	Perm_Tool (1).exe
1504	Perm_Tool (1).exe
1504	Perm_Tool (1).exe
1504	Perm_Tool (1).exe
1504	Perm_Tool (1).exe
1504	Perm_Tool (1).exe
1504	Perm_Tool (1).exe
1504	Perm_Tool (1).exe
1504	Perm_Tool (1).exe
1504	Perm_Tool (1).exe
1504	Perm_Tool (1).exe
1504	Perm_Tool (1).exe
1504	Perm_Tool (1).exe
1504	Perm_Tool (1).exe
1504	Perm_Tool (1).exe
1504	Perm_Tool (1).exe
1504	Perm_Tool (1).exe
3876	icsys.icn.exe
3876	icsys.icn.exe
3876	icsys.icn.exe
3876	icsys.icn.exe
3876	icsys.icn.exe
3876	icsys.icn.exe
3876	icsys.icn.exe
3876	icsys.icn.exe
3876	icsys.icn.exe
3876	icsys.icn.exe
3876	icsys.icn.exe
3876	icsys.icn.exe
3876	icsys.icn.exe
3876	icsys.icn.exe
3876	icsys.icn.exe
3876	icsys.icn.exe
3876	icsys.icn.exe
3876	icsys.icn.exe
3876	icsys.icn.exe
3876	icsys.icn.exe
3876	icsys.icn.exe
3876	icsys.icn.exe
3876	icsys.icn.exe
3876	icsys.icn.exe
3876	icsys.icn.exe
3876	icsys.icn.exe
3876	icsys.icn.exe
3876	icsys.icn.exe
3876	icsys.icn.exe
3876	icsys.icn.exe
3876	icsys.icn.exe
3876	icsys.icn.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
4764	explorer.exe
3960	svchost.exe

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
1504	Perm_Tool (1).exe
1504	Perm_Tool (1).exe
3876	icsys.icn.exe
3876	icsys.icn.exe
4764	explorer.exe
4764	explorer.exe
2728	spoolsv.exe
2728	spoolsv.exe
3960	svchost.exe
3960	svchost.exe
2288	spoolsv.exe
2288	spoolsv.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 1504 wrote to memory of 1272	1504	Perm_Tool (1).exe	92
PID 1504 wrote to memory of 1272	1504	Perm_Tool (1).exe	92
PID 1504 wrote to memory of 3876	1504	Perm_Tool (1).exe	93
PID 1504 wrote to memory of 3876	1504	Perm_Tool (1).exe	93
PID 1504 wrote to memory of 3876	1504	Perm_Tool (1).exe	93
PID 3876 wrote to memory of 4764	3876	icsys.icn.exe	94
PID 3876 wrote to memory of 4764	3876	icsys.icn.exe	94
PID 3876 wrote to memory of 4764	3876	icsys.icn.exe	94
PID 4764 wrote to memory of 2728	4764	explorer.exe	95
PID 4764 wrote to memory of 2728	4764	explorer.exe	95
PID 4764 wrote to memory of 2728	4764	explorer.exe	95
PID 2728 wrote to memory of 3960	2728	spoolsv.exe	96
PID 2728 wrote to memory of 3960	2728	spoolsv.exe	96
PID 2728 wrote to memory of 3960	2728	spoolsv.exe	96
PID 3960 wrote to memory of 2288	3960	svchost.exe	97
PID 3960 wrote to memory of 2288	3960	svchost.exe	97
PID 3960 wrote to memory of 2288	3960	svchost.exe	97

C:\Users\Admin\AppData\Local\Temp\Perm_Tool (1).exe
"C:\Users\Admin\AppData\Local\Temp\Perm_Tool (1).exe"
1⤵
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1504
- \??\c:\users\admin\appdata\local\temp\perm_tool (1).exe
  "c:\users\admin\appdata\local\temp\perm_tool (1).exe "
  2⤵
  - Executes dropped EXE
  PID:1272
- C:\Windows\Resources\Themes\icsys.icn.exe
  C:\Windows\Resources\Themes\icsys.icn.exe
  2⤵
  - Executes dropped EXE
  - Drops file in Windows directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3876
- - \??\c:\windows\resources\themes\explorer.exe
    c:\windows\resources\themes\explorer.exe
    3⤵
    - Modifies visiblity of hidden/system files in Explorer
    - Executes dropped EXE
    - Adds Run key to start application
    - Drops file in System32 directory
    - Drops file in Windows directory
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:4764
  - - \??\c:\windows\resources\spoolsv.exe
      c:\windows\resources\spoolsv.exe SE
      4⤵
      Executes dropped EXE
      Drops file in Windows directory
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:2728
    - - \??\c:\windows\resources\svchost.exe
        
        c:\windows\resources\svchost.exe
        5⤵
        Modifies visiblity of hidden/system files in Explorer
        Executes dropped EXE
        Adds Run key to start application
        Drops file in System32 directory
        Suspicious behavior: GetForegroundWindowSpam
        Suspicious use of SetWindowsHookEx
        Suspicious use of WriteProcessMemory
        
        PID:3960
      - \??\c:\windows\resources\spoolsv.exe
        
        c:\windows\resources\spoolsv.exe PR
        6⤵
        Executes dropped EXE
        Suspicious use of SetWindowsHookEx
        
        PID:2288

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4092 --field-trial-handle=2276,i,11674642242468042059,14711253743544118298,262144 --variations-seed-version /prefetch:8
1⤵
PID:1088

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

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\Resources\Themes\icsys.icn.exe

Filesize
135KB

MD5
85bc2aa04130727ba7faade18f56cda3

SHA1
ad03016bbf5b2df71c29e4b624b2a2d6a478defd

SHA256
0de12bf43f85f713e6a991d3a6483955612dc4471f7f10e505bb96e73513e010

SHA512
0b9f5635576abe071abb798d09550e261296ef6f7efd26cc7d123b320dd1ab7243604528b0dc32178b21a8e5bb74c8e610c4afd407cfadd6c9eb3c19cbd9d8f1

Download Submit
\??\c:\users\admin\appdata\local\temp\perm_tool (1).exe

Filesize
4.4MB

MD5
43ba0a572272cb32dd0d9bd1e01f866b

SHA1
f6fa7cc413bd866c81d9e53f247d63f890897da4

SHA256
9d1718b3f0dbf41760532cf8cea32177a5c81f1ad2e468d55722b4cf5245d1f5

SHA512
b8fdcc82479fc650a8e02238c14f0216df46a5a19961c0728f0e76e9a9f96f92eeabca32461bf71be488af72c3d19327724e9c62b057fbaa2ea61713666b7a5b

Download Submit
\??\c:\windows\resources\spoolsv.exe

Filesize
135KB

MD5
52d6556162a9826ad929e2c8d70735bd

SHA1
f8210e7a62209da8d5ff80c3bce3771e3c871f7b

SHA256
5459ddf38de5c31e8ff5cab20743cb428e412cf2b037e1515a72c4f7a08f4c4e

SHA512
21dcf521f849d1c2185d43f08cbfa4e3dc20d298aa2aa38ec42ddf3731cc1ef2c00aff935ffe2464f16ad9e2db4b062078a38f275636f3ff6055b61f01414452

Download Submit
\??\c:\windows\resources\svchost.exe

Filesize
135KB

MD5
9f30d9b1483730c8f954a7285ee6f48a

SHA1
41177caecfc02a279228440d46d7966a7d0ee65e

SHA256
ac7cf78b79647050258020444aeef4dc712399a5e05d1f68ca765a2aa5b6d1f7

SHA512
6410a5b50e661f1eb838e2972274d3868a5983f196f282553eaa6f13c7cf21d9647b2e271c482c5b598caf01a0054b99ec2344051c9bd776defbb36243d73b3a

Download Submit
\??\c:\windows\resources\themes\explorer.exe

Filesize
135KB

MD5
8b08949b37a4e9e1871483f3cd72cb1b

SHA1
5f799512f9f399a4d237e1079425c6d99261f92e

SHA256
b309736ab241712886eb9c9158e2eb7d636a1c02ffdc5faa04b28da9a1f98ed4

SHA512
861cd4d5db6deffcac941bb6a86a1a65ddefa0f4b659250161d9bf7b00cd8497919302c1a4f25c1884bc46bbce91721185886ef137772f6301b4ff96039692c8

Download Submit
memory/1272-13-0x00007FF79B9D0000-0x00007FF79C52D000-memory.dmp

Filesize
11.4MB

Download
memory/1272-49-0x00007FF79B9D0000-0x00007FF79C52D000-memory.dmp

Filesize
11.4MB

Download
memory/1504-0-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/1504-48-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2288-45-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2728-46-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/3876-14-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/3876-47-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download