100636e87d7ac9e5f4b98ad3028b942e04956284f3fb57d7573c6af6c8316d79

Analysis

max time kernel
138s
max time network
114s
platform
windows7_x64
resource
win7v20210408
submitted
29-04-2021 05:53

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General

Target

remittance advice.docx
Size

10KB
MD5

2af49a1a11b912f47a1f5c48ba164ed1
SHA1

ad0466cc2e11093139e94cf2ecd1ba0b0443eb30
SHA256

100636e87d7ac9e5f4b98ad3028b942e04956284f3fb57d7573c6af6c8316d79
SHA512

d62be458783eb5ae3fd555206d538f0005f56771c98ebf98582a5fea62e6819a8cf593906d552f2eb4399f7b186ac571d940ead5c0f80b8b8757f4346a2fe5e5

Score

8^/10

Malware Config

Signatures

Blocklisted process makes network request 1 IoCs

Processes:

EQNEDT32.EXE

flow pid process

14 536 EQNEDT32.EXE
Downloads MZ/PE file
Executes dropped EXE 6 IoCs

Processes:

vbc.exevbc.exevbc.exevbc.exevbc.exevbc.exe

pid process

740 vbc.exe
1296 vbc.exe
1672 vbc.exe
1496 vbc.exe
1628 vbc.exe
2028 vbc.exe

flow	pid	process
14	536	EQNEDT32.EXE

pid	process
740	vbc.exe
1296	vbc.exe
1672	vbc.exe
1496	vbc.exe
1628	vbc.exe
2028	vbc.exe

Abuses OpenXML format to download file from external location 2 IoCs

Processes:

WINWORD.EXE

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Office\Common\Offline\Files\https://is.gd/RwhzMw	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\Toolbar	WINWORD.EXE

Loads dropped DLL 4 IoCs

Processes:

EQNEDT32.EXE

pid process

536 EQNEDT32.EXE
536 EQNEDT32.EXE
536 EQNEDT32.EXE
536 EQNEDT32.EXE
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064
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
Launches Equation Editor 1 TTPs 1 IoCs
Equation Editor is an old Office component often targeted by exploits such as CVE-2017-11882.
exploit

Exploitation for Client Execution
T1203

Processes:

EQNEDT32.EXE

pid process

536 EQNEDT32.EXE

pid	process
536	EQNEDT32.EXE
536	EQNEDT32.EXE
536	EQNEDT32.EXE
536	EQNEDT32.EXE

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

pid	process
536	EQNEDT32.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-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105"	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\Toolbar	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt	WINWORD.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55"	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\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-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1"	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	WINWORD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

WINWORD.EXE

pid process

1684 WINWORD.EXE
Suspicious behavior: EnumeratesProcesses 10 IoCs

Processes:

vbc.exe

pid process

740 vbc.exe
740 vbc.exe
740 vbc.exe
740 vbc.exe
740 vbc.exe
740 vbc.exe
740 vbc.exe
740 vbc.exe
740 vbc.exe
740 vbc.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

WINWORD.EXEvbc.exe

description pid process

Token: SeShutdownPrivilege 1684 WINWORD.EXE
Token: SeDebugPrivilege 740 vbc.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

WINWORD.EXE

pid process

1684 WINWORD.EXE
1684 WINWORD.EXE

pid	process
1684	WINWORD.EXE

pid	process
740	vbc.exe
740	vbc.exe
740	vbc.exe
740	vbc.exe
740	vbc.exe
740	vbc.exe
740	vbc.exe
740	vbc.exe
740	vbc.exe
740	vbc.exe

description	pid	process
Token: SeShutdownPrivilege	1684	WINWORD.EXE
Token: SeDebugPrivilege	740	vbc.exe

pid	process
1684	WINWORD.EXE
1684	WINWORD.EXE

Suspicious use of WriteProcessMemory 28 IoCs

Processes:

EQNEDT32.EXEWINWORD.EXEvbc.exe

description	pid	process	target process
PID 536 wrote to memory of 740	536	EQNEDT32.EXE	vbc.exe
PID 536 wrote to memory of 740	536	EQNEDT32.EXE	vbc.exe
PID 536 wrote to memory of 740	536	EQNEDT32.EXE	vbc.exe
PID 536 wrote to memory of 740	536	EQNEDT32.EXE	vbc.exe
PID 1684 wrote to memory of 1624	1684	WINWORD.EXE	splwow64.exe
PID 1684 wrote to memory of 1624	1684	WINWORD.EXE	splwow64.exe
PID 1684 wrote to memory of 1624	1684	WINWORD.EXE	splwow64.exe
PID 1684 wrote to memory of 1624	1684	WINWORD.EXE	splwow64.exe
PID 740 wrote to memory of 1296	740	vbc.exe	vbc.exe
PID 740 wrote to memory of 1296	740	vbc.exe	vbc.exe
PID 740 wrote to memory of 1296	740	vbc.exe	vbc.exe
PID 740 wrote to memory of 1296	740	vbc.exe	vbc.exe
PID 740 wrote to memory of 1672	740	vbc.exe	vbc.exe
PID 740 wrote to memory of 1672	740	vbc.exe	vbc.exe
PID 740 wrote to memory of 1672	740	vbc.exe	vbc.exe
PID 740 wrote to memory of 1672	740	vbc.exe	vbc.exe
PID 740 wrote to memory of 1496	740	vbc.exe	vbc.exe
PID 740 wrote to memory of 1496	740	vbc.exe	vbc.exe
PID 740 wrote to memory of 1496	740	vbc.exe	vbc.exe
PID 740 wrote to memory of 1496	740	vbc.exe	vbc.exe
PID 740 wrote to memory of 1628	740	vbc.exe	vbc.exe
PID 740 wrote to memory of 1628	740	vbc.exe	vbc.exe
PID 740 wrote to memory of 1628	740	vbc.exe	vbc.exe
PID 740 wrote to memory of 1628	740	vbc.exe	vbc.exe
PID 740 wrote to memory of 2028	740	vbc.exe	vbc.exe
PID 740 wrote to memory of 2028	740	vbc.exe	vbc.exe
PID 740 wrote to memory of 2028	740	vbc.exe	vbc.exe
PID 740 wrote to memory of 2028	740	vbc.exe	vbc.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\remittance advice.docx"
1⤵
- Abuses OpenXML format to download file from external location
- Drops file in Windows directory
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1684

C:\Windows\splwow64.exe
C:\Windows\splwow64.exe 12288
2⤵
PID:1624

C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE
"C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE" -Embedding
1⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Launches Equation Editor
- Suspicious use of WriteProcessMemory
PID:536

C:\Users\Public\vbc.exe
"C:\Users\Public\vbc.exe"
2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:740

C:\Users\Public\vbc.exe
"C:\Users\Public\vbc.exe"
3⤵
- Executes dropped EXE
PID:1296

C:\Users\Public\vbc.exe
"C:\Users\Public\vbc.exe"
3⤵
- Executes dropped EXE
PID:1496

C:\Users\Public\vbc.exe
"C:\Users\Public\vbc.exe"
3⤵
- Executes dropped EXE
PID:1672

C:\Users\Public\vbc.exe
"C:\Users\Public\vbc.exe"
3⤵
- Executes dropped EXE
PID:1628

C:\Users\Public\vbc.exe
"C:\Users\Public\vbc.exe"
3⤵
- Executes dropped EXE
PID:2028

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scripting

T1064

Exploitation for Client Execution

T1203

Persistence

Privilege Escalation

Defense Evasion

Scripting

T1064

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Public\vbc.exe
MD5
0b43c829af2eb773a3614b02ba5b8c5f

SHA1
bc55a69ca1a72f9f0761112c05b3938aebad1c43

SHA256
25b6f68e2bf505cfde67c533f5d12e869b30efe831fa82fd91c2c29f59fc77ac

SHA512
b217e62b84ee1ff57bb71195a0758ead6821c3cd21b9d48b710cc0a972b2740001e87edeaa22dd10800446ec15733ef5fa51eb58f2ca6d3129b351d9d2c99402

Download Submit
C:\Users\Public\vbc.exe
MD5
0b43c829af2eb773a3614b02ba5b8c5f

SHA1
bc55a69ca1a72f9f0761112c05b3938aebad1c43

SHA256
25b6f68e2bf505cfde67c533f5d12e869b30efe831fa82fd91c2c29f59fc77ac

SHA512
b217e62b84ee1ff57bb71195a0758ead6821c3cd21b9d48b710cc0a972b2740001e87edeaa22dd10800446ec15733ef5fa51eb58f2ca6d3129b351d9d2c99402

Download Submit
C:\Users\Public\vbc.exe
MD5
0b43c829af2eb773a3614b02ba5b8c5f

SHA1
bc55a69ca1a72f9f0761112c05b3938aebad1c43

SHA256
25b6f68e2bf505cfde67c533f5d12e869b30efe831fa82fd91c2c29f59fc77ac

SHA512
b217e62b84ee1ff57bb71195a0758ead6821c3cd21b9d48b710cc0a972b2740001e87edeaa22dd10800446ec15733ef5fa51eb58f2ca6d3129b351d9d2c99402

Download Submit
C:\Users\Public\vbc.exe
MD5
0b43c829af2eb773a3614b02ba5b8c5f

SHA1
bc55a69ca1a72f9f0761112c05b3938aebad1c43

SHA256
25b6f68e2bf505cfde67c533f5d12e869b30efe831fa82fd91c2c29f59fc77ac

SHA512
b217e62b84ee1ff57bb71195a0758ead6821c3cd21b9d48b710cc0a972b2740001e87edeaa22dd10800446ec15733ef5fa51eb58f2ca6d3129b351d9d2c99402

Download Submit
C:\Users\Public\vbc.exe
MD5
0b43c829af2eb773a3614b02ba5b8c5f

SHA1
bc55a69ca1a72f9f0761112c05b3938aebad1c43

SHA256
25b6f68e2bf505cfde67c533f5d12e869b30efe831fa82fd91c2c29f59fc77ac

SHA512
b217e62b84ee1ff57bb71195a0758ead6821c3cd21b9d48b710cc0a972b2740001e87edeaa22dd10800446ec15733ef5fa51eb58f2ca6d3129b351d9d2c99402

Download Submit
C:\Users\Public\vbc.exe
MD5
0b43c829af2eb773a3614b02ba5b8c5f

SHA1
bc55a69ca1a72f9f0761112c05b3938aebad1c43

SHA256
25b6f68e2bf505cfde67c533f5d12e869b30efe831fa82fd91c2c29f59fc77ac

SHA512
b217e62b84ee1ff57bb71195a0758ead6821c3cd21b9d48b710cc0a972b2740001e87edeaa22dd10800446ec15733ef5fa51eb58f2ca6d3129b351d9d2c99402

Download Submit
C:\Users\Public\vbc.exe
MD5
0b43c829af2eb773a3614b02ba5b8c5f

SHA1
bc55a69ca1a72f9f0761112c05b3938aebad1c43

SHA256
25b6f68e2bf505cfde67c533f5d12e869b30efe831fa82fd91c2c29f59fc77ac

SHA512
b217e62b84ee1ff57bb71195a0758ead6821c3cd21b9d48b710cc0a972b2740001e87edeaa22dd10800446ec15733ef5fa51eb58f2ca6d3129b351d9d2c99402

Download Submit
\Users\Public\vbc.exe
MD5
0b43c829af2eb773a3614b02ba5b8c5f

SHA1
bc55a69ca1a72f9f0761112c05b3938aebad1c43

SHA256
25b6f68e2bf505cfde67c533f5d12e869b30efe831fa82fd91c2c29f59fc77ac

SHA512
b217e62b84ee1ff57bb71195a0758ead6821c3cd21b9d48b710cc0a972b2740001e87edeaa22dd10800446ec15733ef5fa51eb58f2ca6d3129b351d9d2c99402

Download Submit
\Users\Public\vbc.exe
MD5
0b43c829af2eb773a3614b02ba5b8c5f

SHA1
bc55a69ca1a72f9f0761112c05b3938aebad1c43

SHA256
25b6f68e2bf505cfde67c533f5d12e869b30efe831fa82fd91c2c29f59fc77ac

SHA512
b217e62b84ee1ff57bb71195a0758ead6821c3cd21b9d48b710cc0a972b2740001e87edeaa22dd10800446ec15733ef5fa51eb58f2ca6d3129b351d9d2c99402

Download Submit
\Users\Public\vbc.exe
MD5
0b43c829af2eb773a3614b02ba5b8c5f

SHA1
bc55a69ca1a72f9f0761112c05b3938aebad1c43

SHA256
25b6f68e2bf505cfde67c533f5d12e869b30efe831fa82fd91c2c29f59fc77ac

SHA512
b217e62b84ee1ff57bb71195a0758ead6821c3cd21b9d48b710cc0a972b2740001e87edeaa22dd10800446ec15733ef5fa51eb58f2ca6d3129b351d9d2c99402

Download Submit
\Users\Public\vbc.exe
MD5
0b43c829af2eb773a3614b02ba5b8c5f

SHA1
bc55a69ca1a72f9f0761112c05b3938aebad1c43

SHA256
25b6f68e2bf505cfde67c533f5d12e869b30efe831fa82fd91c2c29f59fc77ac

SHA512
b217e62b84ee1ff57bb71195a0758ead6821c3cd21b9d48b710cc0a972b2740001e87edeaa22dd10800446ec15733ef5fa51eb58f2ca6d3129b351d9d2c99402

Download Submit
memory/536-63-0x0000000075B31000-0x0000000075B33000-memory.dmp

Filesize
8KB

Download
memory/740-73-0x0000000001E40000-0x0000000001E41000-memory.dmp

Filesize
4KB

Download
memory/740-76-0x0000000000460000-0x000000000046D000-memory.dmp

Filesize
52KB

Download
memory/740-78-0x00000000051D0000-0x0000000005240000-memory.dmp

Filesize
448KB

Download
memory/740-79-0x0000000001E80000-0x0000000001EAE000-memory.dmp

Filesize
184KB

Download
memory/740-71-0x00000000003A0000-0x00000000003A1000-memory.dmp

Filesize
4KB

Download
memory/740-68-0x0000000000000000-mapping.dmp

Download
memory/1624-74-0x0000000000000000-mapping.dmp

Download
memory/1624-75-0x000007FEFC2E1000-0x000007FEFC2E3000-memory.dmp

Filesize
8KB

Download
memory/1684-77-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1684-60-0x0000000072DE1000-0x0000000072DE4000-memory.dmp

Filesize
12KB

Download
memory/1684-62-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1684-61-0x0000000070861000-0x0000000070863000-memory.dmp

Filesize
8KB

Download