xloader | 153db12d1016932980a84bdd663e46fe92a7324383cd83d0881715f8c6436764

Analysis

max time kernel
153s
max time network
152s
platform
windows7_x64
resource
win7v20210408
submitted
21-07-2021 14:53

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General

Target

Purchase Order.xlsx
Size

1.1MB
MD5

bd74930ecc1b91cafa74e1b0268650af
SHA1

be0328924f2885d5d986896b52a2463c5bbed6f0
SHA256

153db12d1016932980a84bdd663e46fe92a7324383cd83d0881715f8c6436764
SHA512

d24687ade48c8d400ea257b4f2ad092c149dcb69e6f904f8ae550741e411499f06b314c67f5f8a5d7e60a9f91401e8bc918d533422f34fa613a5caa8a7c73d72

Score

10^/10

xloader loader rat

Malware Config

Extracted

Family

xloader

Version

2.3

http://www.partypacktv.net/a3ea/

Decoy

yvsgge.com

shooter2.com

ugcfashion.com

deltaefficiencies.com

raidertomb.com

atiempoconguadalupe.com

whmmhh.com

hangar360aircraft.com

toughcookiemasks.store

blindowlch.com

yipo.info

mindsomamove.com

theresalobstahlike.com

nova-select.com

socetegen.com

platinaman.com

datsu-nihon.com

jumpstartinggenius.com

slxplay.com

rightwaysdecor.com

Signatures

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

Xloader Payload 3 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/320-86-0x000000000041D030-mapping.dmp	xloader
behavioral1/memory/320-85-0x0000000000400000-0x0000000000428000-memory.dmp	xloader
behavioral1/memory/568-94-0x00000000000D0000-0x00000000000F8000-memory.dmp	xloader

Blocklisted process makes network request 1 IoCs

Processes:

EQNEDT32.EXE

flow pid process

6 1232 EQNEDT32.EXE
Downloads MZ/PE file
Executes dropped EXE 2 IoCs

Processes:

vbc.exevbc.exe

pid process

1516 vbc.exe
320 vbc.exe
Loads dropped DLL 5 IoCs

Processes:

EQNEDT32.EXEvbc.exe

pid process

1232 EQNEDT32.EXE
1232 EQNEDT32.EXE
1232 EQNEDT32.EXE
1232 EQNEDT32.EXE
1516 vbc.exe
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

flow	pid	process
6	1232	EQNEDT32.EXE

pid	process
1232	EQNEDT32.EXE
1232	EQNEDT32.EXE
1232	EQNEDT32.EXE
1232	EQNEDT32.EXE
1516	vbc.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

vbc.exevbc.execmstp.exe

description	pid	process	target process
PID 1516 set thread context of 320	1516	vbc.exe	vbc.exe
PID 320 set thread context of 1268	320	vbc.exe	Explorer.EXE
PID 568 set thread context of 1268	568	cmstp.exe	Explorer.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

1232 EQNEDT32.EXE

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

pid	process
1232	EQNEDT32.EXE

Modifies Internet Explorer settings 1 TTPs 9 IoCs

adware spyware

Modify Registry

T1112

Processes:

EXCEL.EXE

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

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

784 EXCEL.EXE

pid	process
784	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 16 IoCs

Processes:

vbc.exevbc.execmstp.exe

pid	process
1516	vbc.exe
1516	vbc.exe
320	vbc.exe
320	vbc.exe
568	cmstp.exe
568	cmstp.exe
568	cmstp.exe
568	cmstp.exe
568	cmstp.exe
568	cmstp.exe
568	cmstp.exe
568	cmstp.exe
568	cmstp.exe
568	cmstp.exe
568	cmstp.exe
568	cmstp.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

1268 Explorer.EXE
Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

vbc.execmstp.exe

pid process

320 vbc.exe
320 vbc.exe
320 vbc.exe
568 cmstp.exe
568 cmstp.exe

pid	process
1268	Explorer.EXE

pid	process
320	vbc.exe
320	vbc.exe
320	vbc.exe
568	cmstp.exe
568	cmstp.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

Processes:

vbc.exevbc.execmstp.exeExplorer.EXE

description	pid	process
Token: SeDebugPrivilege	1516	vbc.exe
Token: SeDebugPrivilege	320	vbc.exe
Token: SeDebugPrivilege	568	cmstp.exe
Token: SeShutdownPrivilege	1268	Explorer.EXE
Token: SeShutdownPrivilege	1268	Explorer.EXE
Token: SeShutdownPrivilege	1268	Explorer.EXE
Token: SeShutdownPrivilege	1268	Explorer.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1268 Explorer.EXE
1268 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1268 Explorer.EXE
1268 Explorer.EXE
Suspicious use of SetWindowsHookEx 5 IoCs

Processes:

EXCEL.EXE

pid process

784 EXCEL.EXE
784 EXCEL.EXE
784 EXCEL.EXE
784 EXCEL.EXE
784 EXCEL.EXE

pid	process
1268	Explorer.EXE
1268	Explorer.EXE

pid	process
1268	Explorer.EXE
1268	Explorer.EXE

pid	process
784	EXCEL.EXE
784	EXCEL.EXE
784	EXCEL.EXE
784	EXCEL.EXE
784	EXCEL.EXE

Suspicious use of WriteProcessMemory 22 IoCs

Processes:

EQNEDT32.EXEvbc.exeExplorer.EXEcmstp.exe

description	pid	process	target process
PID 1232 wrote to memory of 1516	1232	EQNEDT32.EXE	vbc.exe
PID 1232 wrote to memory of 1516	1232	EQNEDT32.EXE	vbc.exe
PID 1232 wrote to memory of 1516	1232	EQNEDT32.EXE	vbc.exe
PID 1232 wrote to memory of 1516	1232	EQNEDT32.EXE	vbc.exe
PID 1516 wrote to memory of 320	1516	vbc.exe	vbc.exe
PID 1516 wrote to memory of 320	1516	vbc.exe	vbc.exe
PID 1516 wrote to memory of 320	1516	vbc.exe	vbc.exe
PID 1516 wrote to memory of 320	1516	vbc.exe	vbc.exe
PID 1516 wrote to memory of 320	1516	vbc.exe	vbc.exe
PID 1516 wrote to memory of 320	1516	vbc.exe	vbc.exe
PID 1516 wrote to memory of 320	1516	vbc.exe	vbc.exe
PID 1268 wrote to memory of 568	1268	Explorer.EXE	cmstp.exe
PID 1268 wrote to memory of 568	1268	Explorer.EXE	cmstp.exe
PID 1268 wrote to memory of 568	1268	Explorer.EXE	cmstp.exe
PID 1268 wrote to memory of 568	1268	Explorer.EXE	cmstp.exe
PID 1268 wrote to memory of 568	1268	Explorer.EXE	cmstp.exe
PID 1268 wrote to memory of 568	1268	Explorer.EXE	cmstp.exe
PID 1268 wrote to memory of 568	1268	Explorer.EXE	cmstp.exe
PID 568 wrote to memory of 980	568	cmstp.exe	cmd.exe
PID 568 wrote to memory of 980	568	cmstp.exe	cmd.exe
PID 568 wrote to memory of 980	568	cmstp.exe	cmd.exe
PID 568 wrote to memory of 980	568	cmstp.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: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\Purchase Order.xlsx"
  2⤵
  - Enumerates system info in registry
  - Modifies Internet Explorer settings
  - Suspicious behavior: AddClipboardFormatListener
  - Suspicious use of SetWindowsHookEx
  PID:784
- C:\Windows\SysWOW64\cmstp.exe
  "C:\Windows\SysWOW64\cmstp.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:568
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\vbc.exe"
    3⤵
    PID:980

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:1232
- C:\Users\Public\vbc.exe
  "C:\Users\Public\vbc.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1516
- - C:\Users\Admin\AppData\Local\Temp\vbc.exe
    C:\Users\Admin\AppData\Local\Temp\vbc.exe
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:320

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Exploitation for Client Execution

T1203

Scripting

T1064

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Scripting

T1064

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\vbc.exe

MD5
0ddeb0b17f45b044ca999164550dd25c

SHA1
98c59b8743624e0354d47e51ccbc52d37c2260ec

SHA256
3be492c34e92a83547b0d1656e21f2d8aed8f7448fcb9f720b401c9daa26fc61

SHA512
83e87605ba0e523d9f1c215e2695f95d5a5f886e0151412212ec7c9abd0acebca5a2f2fd42df4fc292fc8ba72991cb38b8426179d4f103c1389ba6b44e8fe917

Download Submit
C:\Users\Admin\AppData\Local\Temp\vbc.exe

MD5
0ddeb0b17f45b044ca999164550dd25c

SHA1
98c59b8743624e0354d47e51ccbc52d37c2260ec

SHA256
3be492c34e92a83547b0d1656e21f2d8aed8f7448fcb9f720b401c9daa26fc61

SHA512
83e87605ba0e523d9f1c215e2695f95d5a5f886e0151412212ec7c9abd0acebca5a2f2fd42df4fc292fc8ba72991cb38b8426179d4f103c1389ba6b44e8fe917

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

MD5
0ddeb0b17f45b044ca999164550dd25c

SHA1
98c59b8743624e0354d47e51ccbc52d37c2260ec

SHA256
3be492c34e92a83547b0d1656e21f2d8aed8f7448fcb9f720b401c9daa26fc61

SHA512
83e87605ba0e523d9f1c215e2695f95d5a5f886e0151412212ec7c9abd0acebca5a2f2fd42df4fc292fc8ba72991cb38b8426179d4f103c1389ba6b44e8fe917

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

MD5
0ddeb0b17f45b044ca999164550dd25c

SHA1
98c59b8743624e0354d47e51ccbc52d37c2260ec

SHA256
3be492c34e92a83547b0d1656e21f2d8aed8f7448fcb9f720b401c9daa26fc61

SHA512
83e87605ba0e523d9f1c215e2695f95d5a5f886e0151412212ec7c9abd0acebca5a2f2fd42df4fc292fc8ba72991cb38b8426179d4f103c1389ba6b44e8fe917

Download Submit
\Users\Admin\AppData\Local\Temp\vbc.exe

MD5
0ddeb0b17f45b044ca999164550dd25c

SHA1
98c59b8743624e0354d47e51ccbc52d37c2260ec

SHA256
3be492c34e92a83547b0d1656e21f2d8aed8f7448fcb9f720b401c9daa26fc61

SHA512
83e87605ba0e523d9f1c215e2695f95d5a5f886e0151412212ec7c9abd0acebca5a2f2fd42df4fc292fc8ba72991cb38b8426179d4f103c1389ba6b44e8fe917

Download Submit
\Users\Public\vbc.exe

MD5
0ddeb0b17f45b044ca999164550dd25c

SHA1
98c59b8743624e0354d47e51ccbc52d37c2260ec

SHA256
3be492c34e92a83547b0d1656e21f2d8aed8f7448fcb9f720b401c9daa26fc61

SHA512
83e87605ba0e523d9f1c215e2695f95d5a5f886e0151412212ec7c9abd0acebca5a2f2fd42df4fc292fc8ba72991cb38b8426179d4f103c1389ba6b44e8fe917

Download Submit
\Users\Public\vbc.exe

MD5
0ddeb0b17f45b044ca999164550dd25c

SHA1
98c59b8743624e0354d47e51ccbc52d37c2260ec

SHA256
3be492c34e92a83547b0d1656e21f2d8aed8f7448fcb9f720b401c9daa26fc61

SHA512
83e87605ba0e523d9f1c215e2695f95d5a5f886e0151412212ec7c9abd0acebca5a2f2fd42df4fc292fc8ba72991cb38b8426179d4f103c1389ba6b44e8fe917

Download Submit
\Users\Public\vbc.exe

MD5
0ddeb0b17f45b044ca999164550dd25c

SHA1
98c59b8743624e0354d47e51ccbc52d37c2260ec

SHA256
3be492c34e92a83547b0d1656e21f2d8aed8f7448fcb9f720b401c9daa26fc61

SHA512
83e87605ba0e523d9f1c215e2695f95d5a5f886e0151412212ec7c9abd0acebca5a2f2fd42df4fc292fc8ba72991cb38b8426179d4f103c1389ba6b44e8fe917

Download Submit
\Users\Public\vbc.exe

MD5
0ddeb0b17f45b044ca999164550dd25c

SHA1
98c59b8743624e0354d47e51ccbc52d37c2260ec

SHA256
3be492c34e92a83547b0d1656e21f2d8aed8f7448fcb9f720b401c9daa26fc61

SHA512
83e87605ba0e523d9f1c215e2695f95d5a5f886e0151412212ec7c9abd0acebca5a2f2fd42df4fc292fc8ba72991cb38b8426179d4f103c1389ba6b44e8fe917

Download Submit
memory/320-85-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/320-88-0x00000000008C0000-0x0000000000BC3000-memory.dmp

Filesize
3.0MB

Download
memory/320-89-0x00000000000F0000-0x0000000000100000-memory.dmp

Filesize
64KB

Download
memory/320-86-0x000000000041D030-mapping.dmp

Download
memory/568-93-0x0000000000520000-0x0000000000538000-memory.dmp

Filesize
96KB

Download
memory/568-98-0x0000000001E40000-0x0000000001ECF000-memory.dmp

Filesize
572KB

Download
memory/568-94-0x00000000000D0000-0x00000000000F8000-memory.dmp

Filesize
160KB

Download
memory/568-91-0x0000000000000000-mapping.dmp

Download
memory/568-95-0x0000000001F40000-0x0000000002243000-memory.dmp

Filesize
3.0MB

Download
memory/784-76-0x0000000005ED0000-0x0000000006B1A000-memory.dmp

Filesize
12.3MB

Download
memory/784-62-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/784-77-0x0000000005ED0000-0x0000000006B1A000-memory.dmp

Filesize
12.3MB

Download
memory/784-61-0x0000000071091000-0x0000000071093000-memory.dmp

Filesize
8KB

Download
memory/784-75-0x0000000005ED0000-0x0000000006B1A000-memory.dmp

Filesize
12.3MB

Download
memory/784-60-0x000000002F4D1000-0x000000002F4D4000-memory.dmp

Filesize
12KB

Download
memory/784-99-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/784-74-0x0000000005ED0000-0x0000000006B1A000-memory.dmp

Filesize
12.3MB

Download
memory/980-97-0x0000000000000000-mapping.dmp

Download
memory/1232-63-0x0000000075AA1000-0x0000000075AA3000-memory.dmp

Filesize
8KB

Download
memory/1268-90-0x0000000006C20000-0x0000000006DBA000-memory.dmp

Filesize
1.6MB

Download
memory/1268-100-0x0000000004A20000-0x0000000004ACC000-memory.dmp

Filesize
688KB

Download
memory/1516-83-0x0000000005E40000-0x0000000005EB8000-memory.dmp

Filesize
480KB

Download
memory/1516-78-0x0000000004E20000-0x0000000004E81000-memory.dmp

Filesize
388KB

Download
memory/1516-73-0x0000000004980000-0x0000000004981000-memory.dmp

Filesize
4KB

Download
memory/1516-71-0x0000000000A30000-0x0000000000A31000-memory.dmp

Filesize
4KB

Download
memory/1516-68-0x0000000000000000-mapping.dmp

Download