xloader | 21f857a7997892d8c9a725f447b9b7be3ce2451a177fb6286da2deb8853208d9

General

Target

invoice.xlsx
Size

2.2MB
MD5

a36c4741d6a05389b3a23ff5e5201930
SHA1

aacc6bd68a6b27041ac35148de613dae5423c8a3
SHA256

21f857a7997892d8c9a725f447b9b7be3ce2451a177fb6286da2deb8853208d9
SHA512

71434a45fb41026a4e4c339f1f4daabc1fbf0fe8cc7c434da49bf5a2fc87584b8396dd51fed15e54d8ee0a9e6febbedd003cd377493610576d79e85429ce7d6a

Score

10^/10

xloader loader rat

Malware Config

Extracted

Family

xloader

Version

2.3

C2

http://www.emergencylocksmithsolutions.com/bei3/

Decoy

cananevrensigorta.com

nyayayacho.com

delta8america.com

info-age.gmbh

magetu.info

illuqon.com

bohathome.com

kellydalva.com

hinkro.com

danlanproproductions.com

skkcabed.com

masnaoto.com

sourcelibre.net

www-1360666.com

ninekimchis.com

sgxzds.com

laysflavorsicons.com

vinkle.net

anazaczarowana.com

verneil.com

Signatures

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

Xloader Payload 2 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1756-18-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral1/memory/1324-27-0x0000000000080000-0x00000000000A9000-memory.dmp	xloader

Blocklisted process makes network request 3 IoCs

Processes:

EQNEDT32.EXE

flow pid process

6 1964 EQNEDT32.EXE
8 1964 EQNEDT32.EXE
10 1964 EQNEDT32.EXE
Executes dropped EXE 2 IoCs

Processes:

vbc.exevbc.exe

pid process

1480 vbc.exe
1756 vbc.exe
Loads dropped DLL 4 IoCs

Processes:

EQNEDT32.EXEvbc.exe

pid process

1964 EQNEDT32.EXE
1964 EQNEDT32.EXE
1964 EQNEDT32.EXE
1480 vbc.exe
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

flow	pid	process
6	1964	EQNEDT32.EXE
8	1964	EQNEDT32.EXE
10	1964	EQNEDT32.EXE

pid	process
1480	vbc.exe
1756	vbc.exe

pid	process
1964	EQNEDT32.EXE
1964	EQNEDT32.EXE
1964	EQNEDT32.EXE
1480	vbc.exe

Suspicious use of SetThreadContext 4 IoCs

Processes:

vbc.exevbc.exenetsh.exe

description	pid	process	target process
PID 1480 set thread context of 1756	1480	vbc.exe	vbc.exe
PID 1756 set thread context of 1268	1756	vbc.exe	Explorer.EXE
PID 1756 set thread context of 1268	1756	vbc.exe	Explorer.EXE
PID 1324 set thread context of 1268	1324	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 6 IoCs

installer

Processes:

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

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

1964 EQNEDT32.EXE

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

pid	process
1964	EQNEDT32.EXE

Modifies Internet Explorer settings 1 TTPs 9 IoCs

adware spyware

Modify Registry

T1112

Processes:

EXCEL.EXE

description	ioc	process
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\Se&nd to OneNote	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
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
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\Toolbar	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt	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
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 (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

1904 EXCEL.EXE

pid	process
1904	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 28 IoCs

Processes:

vbc.exenetsh.exe

pid	process
1756	vbc.exe
1756	vbc.exe
1756	vbc.exe
1324	netsh.exe
1324	netsh.exe
1324	netsh.exe
1324	netsh.exe
1324	netsh.exe
1324	netsh.exe
1324	netsh.exe
1324	netsh.exe
1324	netsh.exe
1324	netsh.exe
1324	netsh.exe
1324	netsh.exe
1324	netsh.exe
1324	netsh.exe
1324	netsh.exe
1324	netsh.exe
1324	netsh.exe
1324	netsh.exe
1324	netsh.exe
1324	netsh.exe
1324	netsh.exe
1324	netsh.exe
1324	netsh.exe
1324	netsh.exe
1324	netsh.exe

Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

vbc.exevbc.exenetsh.exe

pid process

1480 vbc.exe
1756 vbc.exe
1756 vbc.exe
1756 vbc.exe
1756 vbc.exe
1324 netsh.exe
1324 netsh.exe

pid	process
1480	vbc.exe
1756	vbc.exe
1756	vbc.exe
1756	vbc.exe
1756	vbc.exe
1324	netsh.exe
1324	netsh.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

Processes:

vbc.exeExplorer.EXEnetsh.exe

description	pid	process
Token: SeDebugPrivilege	1756	vbc.exe
Token: SeShutdownPrivilege	1268	Explorer.EXE
Token: SeShutdownPrivilege	1268	Explorer.EXE
Token: SeShutdownPrivilege	1268	Explorer.EXE
Token: SeDebugPrivilege	1324	netsh.exe

Suspicious use of FindShellTrayWindow 4 IoCs

Processes:

Explorer.EXE

pid process

1268 Explorer.EXE
1268 Explorer.EXE
1268 Explorer.EXE
1268 Explorer.EXE
Suspicious use of SendNotifyMessage 4 IoCs

Processes:

Explorer.EXE

pid process

1268 Explorer.EXE
1268 Explorer.EXE
1268 Explorer.EXE
1268 Explorer.EXE
Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

EXCEL.EXE

pid process

1904 EXCEL.EXE
1904 EXCEL.EXE
1904 EXCEL.EXE

pid	process
1268	Explorer.EXE
1268	Explorer.EXE
1268	Explorer.EXE
1268	Explorer.EXE

pid	process
1268	Explorer.EXE
1268	Explorer.EXE
1268	Explorer.EXE
1268	Explorer.EXE

pid	process
1904	EXCEL.EXE
1904	EXCEL.EXE
1904	EXCEL.EXE

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

EQNEDT32.EXEvbc.exevbc.exenetsh.exe

description	pid	process	target process
PID 1964 wrote to memory of 1480	1964	EQNEDT32.EXE	vbc.exe
PID 1964 wrote to memory of 1480	1964	EQNEDT32.EXE	vbc.exe
PID 1964 wrote to memory of 1480	1964	EQNEDT32.EXE	vbc.exe
PID 1964 wrote to memory of 1480	1964	EQNEDT32.EXE	vbc.exe
PID 1480 wrote to memory of 1756	1480	vbc.exe	vbc.exe
PID 1480 wrote to memory of 1756	1480	vbc.exe	vbc.exe
PID 1480 wrote to memory of 1756	1480	vbc.exe	vbc.exe
PID 1480 wrote to memory of 1756	1480	vbc.exe	vbc.exe
PID 1480 wrote to memory of 1756	1480	vbc.exe	vbc.exe
PID 1756 wrote to memory of 1324	1756	vbc.exe	netsh.exe
PID 1756 wrote to memory of 1324	1756	vbc.exe	netsh.exe
PID 1756 wrote to memory of 1324	1756	vbc.exe	netsh.exe
PID 1756 wrote to memory of 1324	1756	vbc.exe	netsh.exe
PID 1324 wrote to memory of 1848	1324	netsh.exe	cmd.exe
PID 1324 wrote to memory of 1848	1324	netsh.exe	cmd.exe
PID 1324 wrote to memory of 1848	1324	netsh.exe	cmd.exe
PID 1324 wrote to memory of 1848	1324	netsh.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:1268

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\invoice.xlsx
2⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:1904

C:\Windows\SysWOW64\autoconv.exe
"C:\Windows\SysWOW64\autoconv.exe"
2⤵
PID:516

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:1964

C:\Users\Public\vbc.exe
"C:\Users\Public\vbc.exe"
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1480

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
- Suspicious use of WriteProcessMemory
PID:1756

C:\Windows\SysWOW64\netsh.exe
"C:\Windows\SysWOW64\netsh.exe"
4⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1324

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Public\vbc.exe"
5⤵
PID:1848

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
d074162909d26edf4001380da0ae4743

SHA1
883ec0ac4125c74077865d2255d901a8b192ec3a

SHA256
7b1f7ca6d7203473484a7f221f68c56eff50d196db18a18e9fcf0142dd60a02d

SHA512
82f02fd030dbbadaaef52af30f262743071e67d2cda8d049702ca081955c9d860ef52088b75a9dce00b311044f4eca1d7a95a41f6f79ed46ce5bd71f4b782484

Download Submit
C:\Users\Public\vbc.exe
MD5
d074162909d26edf4001380da0ae4743

SHA1
883ec0ac4125c74077865d2255d901a8b192ec3a

SHA256
7b1f7ca6d7203473484a7f221f68c56eff50d196db18a18e9fcf0142dd60a02d

SHA512
82f02fd030dbbadaaef52af30f262743071e67d2cda8d049702ca081955c9d860ef52088b75a9dce00b311044f4eca1d7a95a41f6f79ed46ce5bd71f4b782484

Download Submit
C:\Users\Public\vbc.exe
MD5
d074162909d26edf4001380da0ae4743

SHA1
883ec0ac4125c74077865d2255d901a8b192ec3a

SHA256
7b1f7ca6d7203473484a7f221f68c56eff50d196db18a18e9fcf0142dd60a02d

SHA512
82f02fd030dbbadaaef52af30f262743071e67d2cda8d049702ca081955c9d860ef52088b75a9dce00b311044f4eca1d7a95a41f6f79ed46ce5bd71f4b782484

Download Submit
\Users\Admin\AppData\Local\Temp\nsn257C.tmp\uyx3hk1pib54.dll
MD5
d5743cd1bd43046294e1590f0a688888

SHA1
9aee1728f2513452670443b687b85e8df3bc0fe3

SHA256
fb2d6b8d2136e1c9bfde269bb45550df7f5ba5b22a93baaa0028f3224bcd3fbc

SHA512
f5367280dfb65a13b659c1f45a41056c0ebeb1be08de00562386c2724b7791e1aff14442417214c90a0da472df7f0690c1d4f70f8d14f9aa31ce8e6178f43511

Download Submit
\Users\Public\vbc.exe
MD5
d074162909d26edf4001380da0ae4743

SHA1
883ec0ac4125c74077865d2255d901a8b192ec3a

SHA256
7b1f7ca6d7203473484a7f221f68c56eff50d196db18a18e9fcf0142dd60a02d

SHA512
82f02fd030dbbadaaef52af30f262743071e67d2cda8d049702ca081955c9d860ef52088b75a9dce00b311044f4eca1d7a95a41f6f79ed46ce5bd71f4b782484

Download Submit
\Users\Public\vbc.exe
MD5
d074162909d26edf4001380da0ae4743

SHA1
883ec0ac4125c74077865d2255d901a8b192ec3a

SHA256
7b1f7ca6d7203473484a7f221f68c56eff50d196db18a18e9fcf0142dd60a02d

SHA512
82f02fd030dbbadaaef52af30f262743071e67d2cda8d049702ca081955c9d860ef52088b75a9dce00b311044f4eca1d7a95a41f6f79ed46ce5bd71f4b782484

Download Submit
\Users\Public\vbc.exe
MD5
d074162909d26edf4001380da0ae4743

SHA1
883ec0ac4125c74077865d2255d901a8b192ec3a

SHA256
7b1f7ca6d7203473484a7f221f68c56eff50d196db18a18e9fcf0142dd60a02d

SHA512
82f02fd030dbbadaaef52af30f262743071e67d2cda8d049702ca081955c9d860ef52088b75a9dce00b311044f4eca1d7a95a41f6f79ed46ce5bd71f4b782484

Download Submit
memory/800-6-0x000007FEF63D0000-0x000007FEF664A000-memory.dmp

Filesize
2.5MB

Download
memory/1268-30-0x0000000006290000-0x00000000063FF000-memory.dmp

Filesize
1.4MB

Download
memory/1268-23-0x0000000006030000-0x0000000006146000-memory.dmp

Filesize
1.1MB

Download
memory/1268-21-0x0000000004540000-0x0000000004631000-memory.dmp

Filesize
964KB

Download
memory/1324-24-0x0000000000000000-mapping.dmp

Download
memory/1324-26-0x00000000012F0000-0x000000000130B000-memory.dmp

Filesize
108KB

Download
memory/1324-29-0x0000000000D50000-0x0000000000DDF000-memory.dmp

Filesize
572KB

Download
memory/1324-28-0x0000000000A40000-0x0000000000D43000-memory.dmp

Filesize
3.0MB

Download
memory/1324-27-0x0000000000080000-0x00000000000A9000-memory.dmp

Filesize
164KB

Download
memory/1480-10-0x0000000000000000-mapping.dmp

Download
memory/1480-17-0x0000000001D60000-0x0000000001D62000-memory.dmp

Filesize
8KB

Download
memory/1756-19-0x0000000000840000-0x0000000000B43000-memory.dmp

Filesize
3.0MB

Download
memory/1756-22-0x00000000002F0000-0x0000000000300000-memory.dmp

Filesize
64KB

Download
memory/1756-20-0x00000000002A0000-0x00000000002B0000-memory.dmp

Filesize
64KB

Download
memory/1756-15-0x000000000041D0C0-mapping.dmp

Download
memory/1756-18-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/1848-25-0x0000000000000000-mapping.dmp

Download
memory/1904-4-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1904-2-0x000000002F141000-0x000000002F144000-memory.dmp

Filesize
12KB

Download
memory/1904-3-0x00000000715E1000-0x00000000715E3000-memory.dmp

Filesize
8KB

Download
memory/1964-5-0x00000000766F1000-0x00000000766F3000-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