xloader | 5584bec329f0c837465e6e786730ad3248ad98e6c3e006b0b808932057aa9bc2

General

Target

DHL Shipment Delivery_Pdf.exe
Size

848KB
MD5

91476ab6caae4d5ed99c3e5180812144
SHA1

6ade7a1487ba2385c96ff47230377e51ef5d4709
SHA256

823536a9c4dfcb7ea455b209f3702d792b2db6ad5202f063b2368b82191966b5
SHA512

cc60af3448e5e25f3baf06e964c0a8fdb1b41056711e69d0e9859ba6acc118b3a66aae8eb8a4e9549ec97f3e5662c7dd4ba9a86a89e9f7c4f13f5bd9377d0cec

Score

10^/10

xloader u86g loader rat suricata

Malware Config

Extracted

Family

xloader

Version

2.3

Campaign

u86g

C2

http://www.99356a.com/u86g/

Decoy

agenciaplim.com

fastpage.info

tiantianbd.com

hanedanpirlanta.com

project1accessories.com

rebeccadoumet.com

vrdnfz.com

jeaninesatl.com

isaakwallihconstruction.com

aegis.cloud

tigerandsnow.com

thehappyadventurer.com

ahhazu.com

hiveplushoney.com

k-plan-ning.com

peresvet.one

darkworkcustoms.com

deathbok.com

blackinkswizz.com

077sb.com

Signatures

Xloader
Xloader is a rebranded version of Formbook malware.
loader xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata

Xloader Payload 3 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/1852-125-0x0000000000400000-0x0000000000428000-memory.dmp	xloader
behavioral2/memory/1852-126-0x000000000041D020-mapping.dmp	xloader
behavioral2/memory/1792-133-0x0000000004430000-0x0000000004458000-memory.dmp	xloader

Suspicious use of SetThreadContext 3 IoCs

Processes:

DHL Shipment Delivery_Pdf.exeDHL Shipment Delivery_Pdf.exechkdsk.exe

description	pid	process	target process
PID 1812 set thread context of 1852	1812	DHL Shipment Delivery_Pdf.exe	DHL Shipment Delivery_Pdf.exe
PID 1852 set thread context of 2708	1852	DHL Shipment Delivery_Pdf.exe	Explorer.EXE
PID 1792 set thread context of 2708	1792	chkdsk.exe	Explorer.EXE

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry
T1012

System Information Discovery
T1082

Processes:

chkdsk.exe

description ioc process

Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier chkdsk.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	chkdsk.exe

Suspicious behavior: EnumeratesProcesses 38 IoCs

Processes:

DHL Shipment Delivery_Pdf.exechkdsk.exe

pid	process
1852	DHL Shipment Delivery_Pdf.exe
1852	DHL Shipment Delivery_Pdf.exe
1852	DHL Shipment Delivery_Pdf.exe
1852	DHL Shipment Delivery_Pdf.exe
1792	chkdsk.exe
1792	chkdsk.exe
1792	chkdsk.exe
1792	chkdsk.exe
1792	chkdsk.exe
1792	chkdsk.exe
1792	chkdsk.exe
1792	chkdsk.exe
1792	chkdsk.exe
1792	chkdsk.exe
1792	chkdsk.exe
1792	chkdsk.exe
1792	chkdsk.exe
1792	chkdsk.exe
1792	chkdsk.exe
1792	chkdsk.exe
1792	chkdsk.exe
1792	chkdsk.exe
1792	chkdsk.exe
1792	chkdsk.exe
1792	chkdsk.exe
1792	chkdsk.exe
1792	chkdsk.exe
1792	chkdsk.exe
1792	chkdsk.exe
1792	chkdsk.exe
1792	chkdsk.exe
1792	chkdsk.exe
1792	chkdsk.exe
1792	chkdsk.exe
1792	chkdsk.exe
1792	chkdsk.exe
1792	chkdsk.exe
1792	chkdsk.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

2708 Explorer.EXE
Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

DHL Shipment Delivery_Pdf.exechkdsk.exe

pid process

1852 DHL Shipment Delivery_Pdf.exe
1852 DHL Shipment Delivery_Pdf.exe
1852 DHL Shipment Delivery_Pdf.exe
1792 chkdsk.exe
1792 chkdsk.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

DHL Shipment Delivery_Pdf.exechkdsk.exe

description pid process

Token: SeDebugPrivilege 1852 DHL Shipment Delivery_Pdf.exe
Token: SeDebugPrivilege 1792 chkdsk.exe
Suspicious use of UnmapMainImage 1 IoCs

Processes:

Explorer.EXE

pid process

2708 Explorer.EXE

pid	process
2708	Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	1852	DHL Shipment Delivery_Pdf.exe
Token: SeDebugPrivilege	1792	chkdsk.exe

pid	process
2708	Explorer.EXE

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

DHL Shipment Delivery_Pdf.exeExplorer.EXEchkdsk.exe

description	pid	process	target process
PID 1812 wrote to memory of 1852	1812	DHL Shipment Delivery_Pdf.exe	DHL Shipment Delivery_Pdf.exe
PID 1812 wrote to memory of 1852	1812	DHL Shipment Delivery_Pdf.exe	DHL Shipment Delivery_Pdf.exe
PID 1812 wrote to memory of 1852	1812	DHL Shipment Delivery_Pdf.exe	DHL Shipment Delivery_Pdf.exe
PID 1812 wrote to memory of 1852	1812	DHL Shipment Delivery_Pdf.exe	DHL Shipment Delivery_Pdf.exe
PID 1812 wrote to memory of 1852	1812	DHL Shipment Delivery_Pdf.exe	DHL Shipment Delivery_Pdf.exe
PID 1812 wrote to memory of 1852	1812	DHL Shipment Delivery_Pdf.exe	DHL Shipment Delivery_Pdf.exe
PID 2708 wrote to memory of 1792	2708	Explorer.EXE	chkdsk.exe
PID 2708 wrote to memory of 1792	2708	Explorer.EXE	chkdsk.exe
PID 2708 wrote to memory of 1792	2708	Explorer.EXE	chkdsk.exe
PID 1792 wrote to memory of 2924	1792	chkdsk.exe	cmd.exe
PID 1792 wrote to memory of 2924	1792	chkdsk.exe	cmd.exe
PID 1792 wrote to memory of 2924	1792	chkdsk.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2708

C:\Users\Admin\AppData\Local\Temp\DHL Shipment Delivery_Pdf.exe
"C:\Users\Admin\AppData\Local\Temp\DHL Shipment Delivery_Pdf.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1812

C:\Users\Admin\AppData\Local\Temp\DHL Shipment Delivery_Pdf.exe
"C:\Users\Admin\AppData\Local\Temp\DHL Shipment Delivery_Pdf.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1852

C:\Windows\SysWOW64\chkdsk.exe
"C:\Windows\SysWOW64\chkdsk.exe"
2⤵
- Suspicious use of SetThreadContext
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1792

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\DHL Shipment Delivery_Pdf.exe"
3⤵
PID:2924

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/1792-135-0x0000000004AD0000-0x0000000004B5F000-memory.dmp

Filesize
572KB

Download
memory/1792-133-0x0000000004430000-0x0000000004458000-memory.dmp

Filesize
160KB

Download
memory/1792-132-0x0000000000120000-0x000000000012A000-memory.dmp

Filesize
40KB

Download
memory/1792-130-0x0000000000000000-mapping.dmp

Download
memory/1792-134-0x0000000004C40000-0x0000000004F60000-memory.dmp

Filesize
3.1MB

Download
memory/1812-119-0x00000000058D0000-0x00000000058D1000-memory.dmp

Filesize
4KB

Download
memory/1812-122-0x0000000005A70000-0x0000000005A86000-memory.dmp

Filesize
88KB

Download
memory/1812-123-0x0000000007BD0000-0x0000000007C2F000-memory.dmp

Filesize
380KB

Download
memory/1812-124-0x000000000A400000-0x000000000A42A000-memory.dmp

Filesize
168KB

Download
memory/1812-121-0x0000000007C40000-0x0000000007C41000-memory.dmp

Filesize
4KB

Download
memory/1812-115-0x0000000000DE0000-0x0000000000DE1000-memory.dmp

Filesize
4KB

Download
memory/1812-120-0x0000000005910000-0x0000000005E0E000-memory.dmp

Filesize
5.0MB

Download
memory/1812-118-0x0000000005820000-0x0000000005821000-memory.dmp

Filesize
4KB

Download
memory/1812-117-0x0000000005E10000-0x0000000005E11000-memory.dmp

Filesize
4KB

Download
memory/1852-126-0x000000000041D020-mapping.dmp

Download
memory/1852-127-0x00000000013F0000-0x0000000001710000-memory.dmp

Filesize
3.1MB

Download
memory/1852-128-0x0000000000BF0000-0x0000000000C00000-memory.dmp

Filesize
64KB

Download
memory/1852-125-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/2708-129-0x0000000004ED0000-0x0000000005013000-memory.dmp

Filesize
1.3MB

Download
memory/2708-136-0x0000000005020000-0x0000000005186000-memory.dmp

Filesize
1.4MB

Download
memory/2924-131-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads