85d4c229751f2a80c801186ff3494ac4f18fc8ef88d4a81a808f2bcd81fd3a87

General

Target

2020_SOA_Payment_21Dec2020.xlsx
Size

2.4MB
MD5

2cdc1a820d72b36d6d4ed94c8ca9d68f
SHA1

6defcb2d984e3bc2b5cea266e1d6a009646d6831
SHA256

85d4c229751f2a80c801186ff3494ac4f18fc8ef88d4a81a808f2bcd81fd3a87
SHA512

67f6353af1f30f205b21c3a22bb90639d215a9d90856052c6225d1f66c81bf14a20ec8cf667bb2fdf6d851f4c4459da2ca4cfb5af6d9647f7ae438b74dcfdeaf

Score

8^/10

ransomware

Malware Config

Signatures

Blocklisted process makes network request 1 IoCs

Processes:

EQNEDT32.EXE

flow pid process

7 1904 EQNEDT32.EXE
Executes dropped EXE 1 IoCs

Processes:

vbc.exe

pid process

1444 vbc.exe
Loads dropped DLL 5 IoCs

Processes:

EQNEDT32.EXEWerFault.exe

pid process

1904 EQNEDT32.EXE
1904 EQNEDT32.EXE
1324 WerFault.exe
1324 WerFault.exe
1324 WerFault.exe
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
ransomware

System Information Discovery
T1082
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

1324 1444 WerFault.exe vbc.exe
Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry
T1012

System Information Discovery
T1082

Processes:

EXCEL.EXE

description ioc process

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

1904 EQNEDT32.EXE

flow	pid	process
7	1904	EQNEDT32.EXE

pid	process
1444	vbc.exe

pid	process
1904	EQNEDT32.EXE
1904	EQNEDT32.EXE
1324	WerFault.exe
1324	WerFault.exe
1324	WerFault.exe

pid	pid_target	process	target process
1324	1444	WerFault.exe	vbc.exe

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

pid	process
1904	EQNEDT32.EXE

Modifies Internet Explorer settings 1 TTPs 9 IoCs

adware spyware

Modify Registry

T1112

Processes:

EXCEL.EXE

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\Toolbar	EXCEL.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\EXCEL.EXE/3000"	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105"	EXCEL.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1"	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

1432 EXCEL.EXE
Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

WerFault.exe

pid process

1324 WerFault.exe
1324 WerFault.exe
1324 WerFault.exe
1324 WerFault.exe
1324 WerFault.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

vbc.exeWerFault.exe

description pid process

Token: SeDebugPrivilege 1444 vbc.exe
Token: SeDebugPrivilege 1324 WerFault.exe
Suspicious use of SetWindowsHookEx 5 IoCs

Processes:

EXCEL.EXE

pid process

1432 EXCEL.EXE
1432 EXCEL.EXE
1432 EXCEL.EXE
1432 EXCEL.EXE
1432 EXCEL.EXE

pid	process
1432	EXCEL.EXE

pid	process
1324	WerFault.exe
1324	WerFault.exe
1324	WerFault.exe
1324	WerFault.exe
1324	WerFault.exe

description	pid	process
Token: SeDebugPrivilege	1444	vbc.exe
Token: SeDebugPrivilege	1324	WerFault.exe

pid	process
1432	EXCEL.EXE
1432	EXCEL.EXE
1432	EXCEL.EXE
1432	EXCEL.EXE
1432	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

EQNEDT32.EXEvbc.exe

description	pid	process	target process
PID 1904 wrote to memory of 1444	1904	EQNEDT32.EXE	vbc.exe
PID 1904 wrote to memory of 1444	1904	EQNEDT32.EXE	vbc.exe
PID 1904 wrote to memory of 1444	1904	EQNEDT32.EXE	vbc.exe
PID 1904 wrote to memory of 1444	1904	EQNEDT32.EXE	vbc.exe
PID 1444 wrote to memory of 1324	1444	vbc.exe	WerFault.exe
PID 1444 wrote to memory of 1324	1444	vbc.exe	WerFault.exe
PID 1444 wrote to memory of 1324	1444	vbc.exe	WerFault.exe
PID 1444 wrote to memory of 1324	1444	vbc.exe	WerFault.exe

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\2020_SOA_Payment_21Dec2020.xlsx
1⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:1432

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:1904

C:\Users\Public\vbc.exe
"C:\Users\Public\vbc.exe"
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1444

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1444 -s 928
3⤵
- Loads dropped DLL
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1324

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scripting

1

T1064

Exploitation for Client Execution

1

T1203

Persistence

Privilege Escalation

Defense Evasion

Scripting

1

T1064

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

2

T1082

Query Registry

1

T1012

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Public\vbc.exe
MD5
f6132f0e9aa1c53e08299d301c6fd4cb

SHA1
f40cee7c21c9e83b31e66012cafc4f97a00fb536

SHA256
536111d26c4a36d6712b2ddb77c7afd90299077596450a5a8eb686d1023e8d02

SHA512
ac10f75b8458465d6c7e23feba1192f195d5bdb925143b74dbe417adc647c472ca8394682d84d2f357fba735aafe78bc0505fac9453394401aaae6bef72fd32b

Download Submit
C:\Users\Public\vbc.exe
MD5
f6132f0e9aa1c53e08299d301c6fd4cb

SHA1
f40cee7c21c9e83b31e66012cafc4f97a00fb536

SHA256
536111d26c4a36d6712b2ddb77c7afd90299077596450a5a8eb686d1023e8d02

SHA512
ac10f75b8458465d6c7e23feba1192f195d5bdb925143b74dbe417adc647c472ca8394682d84d2f357fba735aafe78bc0505fac9453394401aaae6bef72fd32b

Download Submit
\Users\Public\vbc.exe
MD5
f6132f0e9aa1c53e08299d301c6fd4cb

SHA1
f40cee7c21c9e83b31e66012cafc4f97a00fb536

SHA256
536111d26c4a36d6712b2ddb77c7afd90299077596450a5a8eb686d1023e8d02

SHA512
ac10f75b8458465d6c7e23feba1192f195d5bdb925143b74dbe417adc647c472ca8394682d84d2f357fba735aafe78bc0505fac9453394401aaae6bef72fd32b

Download Submit
\Users\Public\vbc.exe
MD5
f6132f0e9aa1c53e08299d301c6fd4cb

SHA1
f40cee7c21c9e83b31e66012cafc4f97a00fb536

SHA256
536111d26c4a36d6712b2ddb77c7afd90299077596450a5a8eb686d1023e8d02

SHA512
ac10f75b8458465d6c7e23feba1192f195d5bdb925143b74dbe417adc647c472ca8394682d84d2f357fba735aafe78bc0505fac9453394401aaae6bef72fd32b

Download Submit
\Users\Public\vbc.exe
MD5
f6132f0e9aa1c53e08299d301c6fd4cb

SHA1
f40cee7c21c9e83b31e66012cafc4f97a00fb536

SHA256
536111d26c4a36d6712b2ddb77c7afd90299077596450a5a8eb686d1023e8d02

SHA512
ac10f75b8458465d6c7e23feba1192f195d5bdb925143b74dbe417adc647c472ca8394682d84d2f357fba735aafe78bc0505fac9453394401aaae6bef72fd32b

Download Submit
\Users\Public\vbc.exe
MD5
f6132f0e9aa1c53e08299d301c6fd4cb

SHA1
f40cee7c21c9e83b31e66012cafc4f97a00fb536

SHA256
536111d26c4a36d6712b2ddb77c7afd90299077596450a5a8eb686d1023e8d02

SHA512
ac10f75b8458465d6c7e23feba1192f195d5bdb925143b74dbe417adc647c472ca8394682d84d2f357fba735aafe78bc0505fac9453394401aaae6bef72fd32b

Download Submit
\Users\Public\vbc.exe
MD5
f6132f0e9aa1c53e08299d301c6fd4cb

SHA1
f40cee7c21c9e83b31e66012cafc4f97a00fb536

SHA256
536111d26c4a36d6712b2ddb77c7afd90299077596450a5a8eb686d1023e8d02

SHA512
ac10f75b8458465d6c7e23feba1192f195d5bdb925143b74dbe417adc647c472ca8394682d84d2f357fba735aafe78bc0505fac9453394401aaae6bef72fd32b

Download Submit
memory/1324-18-0x0000000000A00000-0x0000000000A11000-memory.dmp

Filesize
68KB

Download
memory/1324-17-0x0000000000000000-mapping.dmp

Download
memory/1324-22-0x0000000000270000-0x0000000000271000-memory.dmp

Filesize
4KB

Download
memory/1432-2-0x000000002F711000-0x000000002F714000-memory.dmp

Filesize
12KB

Download
memory/1432-4-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1432-3-0x00000000713C1000-0x00000000713C3000-memory.dmp

Filesize
8KB

Download
memory/1444-9-0x0000000000000000-mapping.dmp

Download
memory/1444-12-0x000000006C4B0000-0x000000006CB9E000-memory.dmp

Filesize
6.9MB

Download
memory/1444-13-0x0000000000A60000-0x0000000000A61000-memory.dmp

Filesize
4KB

Download
memory/1444-15-0x00000000003E0000-0x00000000003E1000-memory.dmp

Filesize
4KB

Download
memory/1444-16-0x0000000000680000-0x00000000006A5000-memory.dmp

Filesize
148KB

Download
memory/1812-6-0x000007FEF74A0000-0x000007FEF771A000-memory.dmp

Filesize
2.5MB

Download
memory/1904-5-0x0000000075BF1000-0x0000000075BF3000-memory.dmp

Filesize
8KB

Download

Analysis

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