xloader | c13a3022f2212e4e16fb2147f6fd0c09ed4439a49b4313603a5e48b7b3174167

General

Target

090900 Quotation - Urgent.xlsx
Size

269KB
MD5

efdb3073607b0e44e67b7436fdb70f5b
SHA1

bac5f9c3aa6e6fae7034d6a1fc9197b1090b4f0e
SHA256

c13a3022f2212e4e16fb2147f6fd0c09ed4439a49b4313603a5e48b7b3174167
SHA512

30efeeb74b2c0bec55e1d0abb8147da25f212e58b0a66a8e8d4f3c83142de43b347ffa6043399867774bb3deca446fd4de5eb1b5010d98c532cfec8fca2181ec

Score

10^/10

xloader b2c0 loader rat

Malware Config

Extracted

Family

xloader

Version

2.5

Campaign

b2c0

C2

http://www.thesewhitevvalls.com/b2c0/

Decoy

bjyxszd520.xyz

hsvfingerprinting.com

elliotpioneer.com

bf396.com

chinaopedia.com

6233v.com

shopeuphoricapparel.com

loccssol.store

truefictionpictures.com

playstarexch.com

peruviancoffee.store

shobhajoshi.com

philme.net

avito-rules.com

independencehomecenters.com

atp-cayenne.com

invetorsbank.com

sasanos.com

scentfreebnb.com

catfuid.com

Signatures

Xloader
Xloader is a rebranded version of Formbook malware.
loader xloader

Xloader Payload 3 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1140-72-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral1/memory/1140-73-0x000000000041D4C0-mapping.dmp	xloader
behavioral1/memory/1188-82-0x0000000000080000-0x00000000000A9000-memory.dmp	xloader

Blocklisted process makes network request 1 IoCs

Processes:

EQNEDT32.EXE

flow pid process

6 1920 EQNEDT32.EXE
Downloads MZ/PE file
Executes dropped EXE 2 IoCs

Processes:

vbc.exevbc.exe

pid process

564 vbc.exe
1140 vbc.exe
Loads dropped DLL 4 IoCs

Processes:

EQNEDT32.EXEvbc.exe

pid process

1920 EQNEDT32.EXE
1920 EQNEDT32.EXE
1920 EQNEDT32.EXE
564 vbc.exe
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

flow	pid	process
6	1920	EQNEDT32.EXE

pid	process
564	vbc.exe
1140	vbc.exe

pid	process
1920	EQNEDT32.EXE
1920	EQNEDT32.EXE
1920	EQNEDT32.EXE
564	vbc.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

vbc.exevbc.exenetsh.exe

description	pid	process	target process
PID 564 set thread context of 1140	564	vbc.exe	vbc.exe
PID 1140 set thread context of 1212	1140	vbc.exe	Explorer.EXE
PID 1188 set thread context of 1212	1188	netsh.exe	Explorer.EXE

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

System Information Discovery
T1082

NSIS installer 12 IoCs

installer

Processes:

resource	yara_rule
\Users\Public\vbc.exe	nsis_installer_1
\Users\Public\vbc.exe	nsis_installer_2
\Users\Public\vbc.exe	nsis_installer_1
\Users\Public\vbc.exe	nsis_installer_2
\Users\Public\vbc.exe	nsis_installer_1
\Users\Public\vbc.exe	nsis_installer_2
C:\Users\Public\vbc.exe	nsis_installer_1
C:\Users\Public\vbc.exe	nsis_installer_2
C:\Users\Public\vbc.exe	nsis_installer_1
C:\Users\Public\vbc.exe	nsis_installer_2
C:\Users\Public\vbc.exe	nsis_installer_1
C:\Users\Public\vbc.exe	nsis_installer_2

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

1920 EQNEDT32.EXE

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

pid	process
1920	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-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel	EXCEL.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"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\Toolbar	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt	EXCEL.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"	EXCEL.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"	EXCEL.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"	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

1812 EXCEL.EXE

pid	process
1812	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 28 IoCs

Processes:

vbc.exenetsh.exe

pid	process
1140	vbc.exe
1140	vbc.exe
1188	netsh.exe
1188	netsh.exe
1188	netsh.exe
1188	netsh.exe
1188	netsh.exe
1188	netsh.exe
1188	netsh.exe
1188	netsh.exe
1188	netsh.exe
1188	netsh.exe
1188	netsh.exe
1188	netsh.exe
1188	netsh.exe
1188	netsh.exe
1188	netsh.exe
1188	netsh.exe
1188	netsh.exe
1188	netsh.exe
1188	netsh.exe
1188	netsh.exe
1188	netsh.exe
1188	netsh.exe
1188	netsh.exe
1188	netsh.exe
1188	netsh.exe
1188	netsh.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

1212 Explorer.EXE
Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

vbc.exenetsh.exe

pid process

1140 vbc.exe
1140 vbc.exe
1140 vbc.exe
1188 netsh.exe
1188 netsh.exe

pid	process
1212	Explorer.EXE

Suspicious use of AdjustPrivilegeToken 7 IoCs

Processes:

vbc.exeExplorer.EXEnetsh.exe

description	pid	process
Token: SeDebugPrivilege	1140	vbc.exe
Token: SeShutdownPrivilege	1212	Explorer.EXE
Token: SeShutdownPrivilege	1212	Explorer.EXE
Token: SeDebugPrivilege	1188	netsh.exe
Token: SeShutdownPrivilege	1212	Explorer.EXE
Token: SeShutdownPrivilege	1212	Explorer.EXE
Token: SeShutdownPrivilege	1212	Explorer.EXE

Suspicious use of FindShellTrayWindow 4 IoCs

Processes:

Explorer.EXE

pid process

1212 Explorer.EXE
1212 Explorer.EXE
1212 Explorer.EXE
1212 Explorer.EXE
Suspicious use of SendNotifyMessage 4 IoCs

Processes:

Explorer.EXE

pid process

1212 Explorer.EXE
1212 Explorer.EXE
1212 Explorer.EXE
1212 Explorer.EXE
Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

EXCEL.EXE

pid process

1812 EXCEL.EXE
1812 EXCEL.EXE
1812 EXCEL.EXE

pid	process
1212	Explorer.EXE
1212	Explorer.EXE
1212	Explorer.EXE
1212	Explorer.EXE

pid	process
1212	Explorer.EXE
1212	Explorer.EXE
1212	Explorer.EXE
1212	Explorer.EXE

pid	process
1812	EXCEL.EXE
1812	EXCEL.EXE
1812	EXCEL.EXE

Suspicious use of WriteProcessMemory 19 IoCs

Processes:

EQNEDT32.EXEvbc.exeExplorer.EXEnetsh.exe

description	pid	process	target process
PID 1920 wrote to memory of 564	1920	EQNEDT32.EXE	vbc.exe
PID 1920 wrote to memory of 564	1920	EQNEDT32.EXE	vbc.exe
PID 1920 wrote to memory of 564	1920	EQNEDT32.EXE	vbc.exe
PID 1920 wrote to memory of 564	1920	EQNEDT32.EXE	vbc.exe
PID 564 wrote to memory of 1140	564	vbc.exe	vbc.exe
PID 564 wrote to memory of 1140	564	vbc.exe	vbc.exe
PID 564 wrote to memory of 1140	564	vbc.exe	vbc.exe
PID 564 wrote to memory of 1140	564	vbc.exe	vbc.exe
PID 564 wrote to memory of 1140	564	vbc.exe	vbc.exe
PID 564 wrote to memory of 1140	564	vbc.exe	vbc.exe
PID 564 wrote to memory of 1140	564	vbc.exe	vbc.exe
PID 1212 wrote to memory of 1188	1212	Explorer.EXE	netsh.exe
PID 1212 wrote to memory of 1188	1212	Explorer.EXE	netsh.exe
PID 1212 wrote to memory of 1188	1212	Explorer.EXE	netsh.exe
PID 1212 wrote to memory of 1188	1212	Explorer.EXE	netsh.exe
PID 1188 wrote to memory of 1612	1188	netsh.exe	cmd.exe
PID 1188 wrote to memory of 1612	1188	netsh.exe	cmd.exe
PID 1188 wrote to memory of 1612	1188	netsh.exe	cmd.exe
PID 1188 wrote to memory of 1612	1188	netsh.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1212

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\090900 Quotation - Urgent.xlsx"
2⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:1812

C:\Windows\SysWOW64\netsh.exe
"C:\Windows\SysWOW64\netsh.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1188

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Public\vbc.exe"
3⤵
PID:1612

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:1920

C:\Users\Public\vbc.exe
"C:\Users\Public\vbc.exe"
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:564

C:\Users\Public\vbc.exe
"C:\Users\Public\vbc.exe"
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1140

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

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Downloads

C:\Users\Public\vbc.exe
MD5
98ffc3c812e6cec919ebd286973e2002

SHA1
b0d1a65445a7923870ad23ec4d80f592e808c987

SHA256
014d0ece0d472eaea73698d634308303ddb9f227f39d339a66416c3cb744d2c1

SHA512
5875f8f2c736cbf501c25635f5c9014e499a7fce01f139315cbf5c0d3c45e1e8568a9fa8ddfe60cb0a44804a7677fdcd411eab4be6177926649b1b691d97a721

Download Submit
C:\Users\Public\vbc.exe
MD5
98ffc3c812e6cec919ebd286973e2002

SHA1
b0d1a65445a7923870ad23ec4d80f592e808c987

SHA256
014d0ece0d472eaea73698d634308303ddb9f227f39d339a66416c3cb744d2c1

SHA512
5875f8f2c736cbf501c25635f5c9014e499a7fce01f139315cbf5c0d3c45e1e8568a9fa8ddfe60cb0a44804a7677fdcd411eab4be6177926649b1b691d97a721

Download Submit
C:\Users\Public\vbc.exe
MD5
98ffc3c812e6cec919ebd286973e2002

SHA1
b0d1a65445a7923870ad23ec4d80f592e808c987

SHA256
014d0ece0d472eaea73698d634308303ddb9f227f39d339a66416c3cb744d2c1

SHA512
5875f8f2c736cbf501c25635f5c9014e499a7fce01f139315cbf5c0d3c45e1e8568a9fa8ddfe60cb0a44804a7677fdcd411eab4be6177926649b1b691d97a721

Download Submit
\Users\Admin\AppData\Local\Temp\nsd4886.tmp\nawgsdqut.dll
MD5
d4233fefc9328cc30b0ef014beb2f51b

SHA1
302180a5edb1fd653d7884bb60172e6edfbbeac4

SHA256
1827a3002964434b0acff1359241948e334148d3413312cfea326cae8f269758

SHA512
b3e19c83e631b6a8b8b0d00ab14af811519765b737f1497f27e8c3a8c3328038967dbb6095671e4095af48d6355b5f13cec20c38ef2dfb14cc2ae8e9482de4af

Download Submit
\Users\Public\vbc.exe
MD5
98ffc3c812e6cec919ebd286973e2002

SHA1
b0d1a65445a7923870ad23ec4d80f592e808c987

SHA256
014d0ece0d472eaea73698d634308303ddb9f227f39d339a66416c3cb744d2c1

SHA512
5875f8f2c736cbf501c25635f5c9014e499a7fce01f139315cbf5c0d3c45e1e8568a9fa8ddfe60cb0a44804a7677fdcd411eab4be6177926649b1b691d97a721

Download Submit
\Users\Public\vbc.exe
MD5
98ffc3c812e6cec919ebd286973e2002

SHA1
b0d1a65445a7923870ad23ec4d80f592e808c987

SHA256
014d0ece0d472eaea73698d634308303ddb9f227f39d339a66416c3cb744d2c1

SHA512
5875f8f2c736cbf501c25635f5c9014e499a7fce01f139315cbf5c0d3c45e1e8568a9fa8ddfe60cb0a44804a7677fdcd411eab4be6177926649b1b691d97a721

Download Submit
\Users\Public\vbc.exe
MD5
98ffc3c812e6cec919ebd286973e2002

SHA1
b0d1a65445a7923870ad23ec4d80f592e808c987

SHA256
014d0ece0d472eaea73698d634308303ddb9f227f39d339a66416c3cb744d2c1

SHA512
5875f8f2c736cbf501c25635f5c9014e499a7fce01f139315cbf5c0d3c45e1e8568a9fa8ddfe60cb0a44804a7677fdcd411eab4be6177926649b1b691d97a721

Download Submit
memory/564-67-0x0000000000000000-mapping.dmp

Download
memory/1140-73-0x000000000041D4C0-mapping.dmp

Download
memory/1140-77-0x0000000000340000-0x0000000000351000-memory.dmp

Filesize
68KB

Download
memory/1140-76-0x00000000008D0000-0x0000000000BD3000-memory.dmp

Filesize
3.0MB

Download
memory/1140-72-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/1188-83-0x00000000020C0000-0x00000000023C3000-memory.dmp

Filesize
3.0MB

Download
memory/1188-84-0x0000000000480000-0x0000000000510000-memory.dmp

Filesize
576KB

Download
memory/1188-82-0x0000000000080000-0x00000000000A9000-memory.dmp

Filesize
164KB

Download
memory/1188-81-0x0000000000B10000-0x0000000000B2B000-memory.dmp

Filesize
108KB

Download
memory/1188-79-0x0000000000000000-mapping.dmp

Download
memory/1212-78-0x0000000004E80000-0x000000000500E000-memory.dmp

Filesize
1.6MB

Download
memory/1212-85-0x0000000005010000-0x00000000050C5000-memory.dmp

Filesize
724KB

Download
memory/1212-88-0x000007FF54500000-0x000007FF5450A000-memory.dmp

Filesize
40KB

Download
memory/1212-87-0x000007FEF5160000-0x000007FEF52A3000-memory.dmp

Filesize
1.3MB

Download
memory/1612-80-0x0000000000000000-mapping.dmp

Download
memory/1812-62-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1812-60-0x000000002F081000-0x000000002F084000-memory.dmp

Filesize
12KB

Download
memory/1812-61-0x0000000070E31000-0x0000000070E33000-memory.dmp

Filesize
8KB

Download
memory/1812-86-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1920-63-0x0000000075801000-0x0000000075803000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads