07c6bdda512ecb8bbadcf57e4f98b3376ca121dd2102cc17513133d277b0430f

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
22/08/2024, 07:51

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General

Target

AppXor.exe
Size

790KB
MD5

48d161ecdea55f44e53df822e4947f5c
SHA1

2a38d2e290561a0937ccaff9c2eff59c554fbeaa
SHA256

07c6bdda512ecb8bbadcf57e4f98b3376ca121dd2102cc17513133d277b0430f
SHA512

c9d4c2755e82f5d8fa64c008fa5442ad3bde809b55011fc763b0c486eeb789a8b84f7f7226ec45fce4ef36adb5aad94513284ee620ead3822fca57df4aa70895
SSDEEP

12288:cFUNDaMzrJbjmrlbrJcYXrCbLrJdLOrOzrJ3bUrvJ:cFOayrxjmrFruYXrCvrHLOrgrtbUrvJ

Score

10^/10

discovery evasion persistence

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-1-5-21-2412658365-3084825385-3340777666-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	svchost.exe

Executes dropped EXE 6 IoCs

pid	Process
4716	appxor.exe
4544	icsys.icn.exe
1128	explorer.exe
5100	spoolsv.exe
2356	svchost.exe
2220	spoolsv.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\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
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Explorer = "c:\\windows\\resources\\themes\\explorer.exe RO"	explorer.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\Themes\icsys.icn.exe	AppXor.exe
File opened for modification	\??\c:\windows\resources\themes\explorer.exe	icsys.icn.exe
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

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1624	4716	WerFault.exe	84

System Location Discovery: System Language Discovery 1 TTPs 7 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	icsys.icn.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	spoolsv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	spoolsv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AppXor.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	appxor.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4052	AppXor.exe
4052	AppXor.exe
4052	AppXor.exe
4052	AppXor.exe
4052	AppXor.exe
4052	AppXor.exe
4052	AppXor.exe
4052	AppXor.exe
4052	AppXor.exe
4052	AppXor.exe
4052	AppXor.exe
4052	AppXor.exe
4052	AppXor.exe
4052	AppXor.exe
4052	AppXor.exe
4052	AppXor.exe
4052	AppXor.exe
4052	AppXor.exe
4052	AppXor.exe
4052	AppXor.exe
4052	AppXor.exe
4052	AppXor.exe
4052	AppXor.exe
4052	AppXor.exe
4052	AppXor.exe
4052	AppXor.exe
4052	AppXor.exe
4052	AppXor.exe
4052	AppXor.exe
4052	AppXor.exe
4052	AppXor.exe
4052	AppXor.exe
4544	icsys.icn.exe
4544	icsys.icn.exe
4544	icsys.icn.exe
4544	icsys.icn.exe
4544	icsys.icn.exe
4544	icsys.icn.exe
4544	icsys.icn.exe
4544	icsys.icn.exe
4544	icsys.icn.exe
4544	icsys.icn.exe
4544	icsys.icn.exe
4544	icsys.icn.exe
4544	icsys.icn.exe
4544	icsys.icn.exe
4544	icsys.icn.exe
4544	icsys.icn.exe
4544	icsys.icn.exe
4544	icsys.icn.exe
4544	icsys.icn.exe
4544	icsys.icn.exe
4544	icsys.icn.exe
4544	icsys.icn.exe
4544	icsys.icn.exe
4544	icsys.icn.exe
4544	icsys.icn.exe
4544	icsys.icn.exe
4544	icsys.icn.exe
4544	icsys.icn.exe
4544	icsys.icn.exe
4544	icsys.icn.exe
4544	icsys.icn.exe
4544	icsys.icn.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
1128	explorer.exe
2356	svchost.exe

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
4052	AppXor.exe
4052	AppXor.exe
4544	icsys.icn.exe
4544	icsys.icn.exe
1128	explorer.exe
1128	explorer.exe
5100	spoolsv.exe
5100	spoolsv.exe
2356	svchost.exe
2356	svchost.exe
2220	spoolsv.exe
2220	spoolsv.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 4052 wrote to memory of 4716	4052	AppXor.exe	84
PID 4052 wrote to memory of 4716	4052	AppXor.exe	84
PID 4052 wrote to memory of 4716	4052	AppXor.exe	84
PID 4052 wrote to memory of 4544	4052	AppXor.exe	91
PID 4052 wrote to memory of 4544	4052	AppXor.exe	91
PID 4052 wrote to memory of 4544	4052	AppXor.exe	91
PID 4544 wrote to memory of 1128	4544	icsys.icn.exe	92
PID 4544 wrote to memory of 1128	4544	icsys.icn.exe	92
PID 4544 wrote to memory of 1128	4544	icsys.icn.exe	92
PID 1128 wrote to memory of 5100	1128	explorer.exe	93
PID 1128 wrote to memory of 5100	1128	explorer.exe	93
PID 1128 wrote to memory of 5100	1128	explorer.exe	93
PID 5100 wrote to memory of 2356	5100	spoolsv.exe	94
PID 5100 wrote to memory of 2356	5100	spoolsv.exe	94
PID 5100 wrote to memory of 2356	5100	spoolsv.exe	94
PID 2356 wrote to memory of 2220	2356	svchost.exe	95
PID 2356 wrote to memory of 2220	2356	svchost.exe	95
PID 2356 wrote to memory of 2220	2356	svchost.exe	95

C:\Users\Admin\AppData\Local\Temp\AppXor.exe
"C:\Users\Admin\AppData\Local\Temp\AppXor.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4052
- \??\c:\users\admin\appdata\local\temp\appxor.exe
  c:\users\admin\appdata\local\temp\appxor.exe
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:4716
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4716 -s 1080
    3⤵
    - Program crash
    PID:1624
- C:\Windows\Resources\Themes\icsys.icn.exe
  C:\Windows\Resources\Themes\icsys.icn.exe
  2⤵
  - Executes dropped EXE
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4544
- - \??\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
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:1128
  - - \??\c:\windows\resources\spoolsv.exe
      c:\windows\resources\spoolsv.exe SE
      4⤵
      Executes dropped EXE
      Drops file in Windows directory
      System Location Discovery: System Language Discovery
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:5100
    - - \??\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
        System Location Discovery: System Language Discovery
        Suspicious behavior: GetForegroundWindowSpam
        Suspicious use of SetWindowsHookEx
        Suspicious use of WriteProcessMemory
        
        PID:2356
      - \??\c:\windows\resources\spoolsv.exe
        
        c:\windows\resources\spoolsv.exe PR
        6⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        Suspicious use of SetWindowsHookEx
        
        PID:2220

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4716 -ip 4716
1⤵
PID:4696

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

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\appxor.exe

Filesize
655KB

MD5
4bfe50ad13d9656904e0a457ecb9ad67

SHA1
6bb235ef4824108bd2818e894be507a7ee1ca979

SHA256
5f04ad825ab9c801743d44cca48c8eb4d367090ff328d9d7dac93a3f67383f15

SHA512
3543dc41ba5b03233462f2c1598ace6f1f4eae437c504a365e569dab899e6a3cc62503cfa84cecb54060122e80b40b8b1b6e098243079fbcfc4a6e8e840c5052

Download Submit
C:\Windows\Resources\Themes\explorer.exe

Filesize
135KB

MD5
6adc0874f762fc9d0d29eac99b2fc32d

SHA1
b3e7d10c369befd6f7c7fbd4ea5a878d3244a2f7

SHA256
0cf5f293ff1f160816de0c0b980a662a1461cbca644c87d9abdde0b38020a0aa

SHA512
ec83acb52ccb9673140564b07b8ecd8787d51a776813706652ac7b733ffb36002b08c5ccd1b6d920ad0f98e69cf9f7ad9f693c17198063682d207277a5c6581c

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

Filesize
135KB

MD5
c8ad376971a8ca97eeb6d9a54284cc38

SHA1
42d87738158b0c08f21bc13e99ebe989836412e5

SHA256
ac385c73cbad57313bdc9cc3ab69625869845a8ab5b7a8f5bfb98dc9bdae592a

SHA512
6dfd4c2cf3f9dd59465286f7baba2e1c0e109319821dd889609587a53409276d55346c7fa7e2a6620fb4052e611ef0a57c6f7fb5d5f4a4d87ad7817ef65ba8c5

Download Submit
C:\Windows\Resources\spoolsv.exe

Filesize
135KB

MD5
2c56b97d86df21c20a3edf17e03d07b9

SHA1
ece0cec898b86a2189a16ef35d4e8ff21d3c4881

SHA256
3760e325e2fc6488f6ac05832c2255541ce974e2c78347bcd2164c41ff4fd3f1

SHA512
09d9079e473e35d6ae6c89d27a30e6f6194562ccd70754738e3bd7b1e304bf1c6fa28ac94297f223c904731b439d5e65c705b42bc154cb3b91c9f21bf6fc6f95

Download Submit
C:\Windows\Resources\svchost.exe

Filesize
135KB

MD5
b6813cc92e031a60f8484cc950320f45

SHA1
7f774cebead4f4d26d9c6267d60ca988ea9aafe9

SHA256
1c5f2b078454d7ffd2737db972fba5a7811a850476b70fe8e5854da88504b50e

SHA512
e60b717530b919ad92bf276adb7a4da6b6948d9de3963ce384f5d56a26daa011c3937be36cb78b7d663e9afc4afa28bacb6b3b9ffa87e3b6b13c831e68c657f9

Download Submit
memory/1128-57-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2220-53-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2356-58-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/4052-0-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/4052-56-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/4544-55-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/4544-20-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/4716-16-0x0000000074E70000-0x0000000075620000-memory.dmp

Filesize
7.7MB

Download
memory/4716-10-0x0000000000480000-0x0000000000528000-memory.dmp

Filesize
672KB

Download
memory/4716-9-0x0000000074E7E000-0x0000000074E7F000-memory.dmp

Filesize
4KB

Download
memory/4716-24-0x0000000074E70000-0x0000000075620000-memory.dmp

Filesize
7.7MB

Download
memory/4716-11-0x0000000004EE0000-0x0000000004F7C000-memory.dmp

Filesize
624KB

Download
memory/4716-12-0x0000000005590000-0x0000000005B34000-memory.dmp

Filesize
5.6MB

Download
memory/4716-15-0x0000000005120000-0x0000000005176000-memory.dmp

Filesize
344KB

Download
memory/4716-14-0x0000000004FB0000-0x0000000004FBA000-memory.dmp

Filesize
40KB

Download
memory/4716-13-0x0000000005080000-0x0000000005112000-memory.dmp

Filesize
584KB

Download
memory/5100-54-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download