xloader | f1d7ead1ca0f3e39c12bf5b67bb35cfc745acf0f587c2d6ce45eb2904f44aaa7

General

Target

Shipping_Doc190dk0lwt837.exe
Size

249KB
MD5

2d0ac0a8f2d2aea1f05429585c1bdc4c
SHA1

3657594459b01c0c918e0deeaf3ad7f05a4efd90
SHA256

f1d7ead1ca0f3e39c12bf5b67bb35cfc745acf0f587c2d6ce45eb2904f44aaa7
SHA512

863b35e33b0b09aece9268c83ca3411180c23463a01e6b93744b978199c7fc386ecaddf0776588be59bcf41b46f4584e7405a17f1ee3cc64df602655036f92e7

Score

10^/10

xloader u5eh loader rat suricata

Malware Config

Extracted

Family

xloader

Version

2.5

Campaign

u5eh

C2

http://www.retonamoss.com/u5eh/

Decoy

tryafaq.com

bobcathntshop.com

oglead.com

026skz.xyz

brasbux.com

adna17.com

noveltyrofjiy.xyz

realestatecompanys.com

leman-web.com

df5686.com

jonathonhawkins.com

juliedominyfloralartistry.com

classyeventsco.com

aquaticatt.com

iotworld.xyz

hoc8.com

disposablediapers.store

peregovorim.online

advancebits.club

getaburialplan.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
behavioral1/memory/556-57-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral1/memory/556-58-0x000000000041D3E0-mapping.dmp	xloader
behavioral1/memory/568-66-0x00000000000C0000-0x00000000000E9000-memory.dmp	xloader

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

1620 cmd.exe
Loads dropped DLL 1 IoCs

Processes:

Shipping_Doc190dk0lwt837.exe

pid process

1728 Shipping_Doc190dk0lwt837.exe

pid	process
1620	cmd.exe

pid	process
1728	Shipping_Doc190dk0lwt837.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

Shipping_Doc190dk0lwt837.exeShipping_Doc190dk0lwt837.exechkdsk.exe

description	pid	process	target process
PID 1728 set thread context of 556	1728	Shipping_Doc190dk0lwt837.exe	Shipping_Doc190dk0lwt837.exe
PID 556 set thread context of 1268	556	Shipping_Doc190dk0lwt837.exe	Explorer.EXE
PID 568 set thread context of 1268	568	chkdsk.exe	Explorer.EXE

Drops file in Program Files directory 1 IoCs

Processes:

chkdsk.exe

description ioc process

File opened for modification C:\Program Files (x86)\Ufrdh6t8\regsvc1b6hzl5.exe chkdsk.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
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
File opened for modification	C:\Program Files (x86)\Ufrdh6t8\regsvc1b6hzl5.exe	chkdsk.exe

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

Suspicious behavior: EnumeratesProcesses 30 IoCs

Processes:

Shipping_Doc190dk0lwt837.exechkdsk.exe

pid	process
556	Shipping_Doc190dk0lwt837.exe
556	Shipping_Doc190dk0lwt837.exe
568	chkdsk.exe
568	chkdsk.exe
568	chkdsk.exe
568	chkdsk.exe
568	chkdsk.exe
568	chkdsk.exe
568	chkdsk.exe
568	chkdsk.exe
568	chkdsk.exe
568	chkdsk.exe
568	chkdsk.exe
568	chkdsk.exe
568	chkdsk.exe
568	chkdsk.exe
568	chkdsk.exe
568	chkdsk.exe
568	chkdsk.exe
568	chkdsk.exe
568	chkdsk.exe
568	chkdsk.exe
568	chkdsk.exe
568	chkdsk.exe
568	chkdsk.exe
568	chkdsk.exe
568	chkdsk.exe
568	chkdsk.exe
568	chkdsk.exe
568	chkdsk.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

1268 Explorer.EXE
Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

Shipping_Doc190dk0lwt837.exechkdsk.exe

pid process

556 Shipping_Doc190dk0lwt837.exe
556 Shipping_Doc190dk0lwt837.exe
556 Shipping_Doc190dk0lwt837.exe
568 chkdsk.exe
568 chkdsk.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Shipping_Doc190dk0lwt837.exechkdsk.exe

description pid process

Token: SeDebugPrivilege 556 Shipping_Doc190dk0lwt837.exe
Token: SeDebugPrivilege 568 chkdsk.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

pid	process
1268	Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	556	Shipping_Doc190dk0lwt837.exe
Token: SeDebugPrivilege	568	chkdsk.exe

pid	process
1268	Explorer.EXE
1268	Explorer.EXE

pid	process
1268	Explorer.EXE
1268	Explorer.EXE

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

Shipping_Doc190dk0lwt837.exeExplorer.EXEchkdsk.exe

description	pid	process	target process
PID 1728 wrote to memory of 556	1728	Shipping_Doc190dk0lwt837.exe	Shipping_Doc190dk0lwt837.exe
PID 1728 wrote to memory of 556	1728	Shipping_Doc190dk0lwt837.exe	Shipping_Doc190dk0lwt837.exe
PID 1728 wrote to memory of 556	1728	Shipping_Doc190dk0lwt837.exe	Shipping_Doc190dk0lwt837.exe
PID 1728 wrote to memory of 556	1728	Shipping_Doc190dk0lwt837.exe	Shipping_Doc190dk0lwt837.exe
PID 1728 wrote to memory of 556	1728	Shipping_Doc190dk0lwt837.exe	Shipping_Doc190dk0lwt837.exe
PID 1728 wrote to memory of 556	1728	Shipping_Doc190dk0lwt837.exe	Shipping_Doc190dk0lwt837.exe
PID 1728 wrote to memory of 556	1728	Shipping_Doc190dk0lwt837.exe	Shipping_Doc190dk0lwt837.exe
PID 1268 wrote to memory of 568	1268	Explorer.EXE	chkdsk.exe
PID 1268 wrote to memory of 568	1268	Explorer.EXE	chkdsk.exe
PID 1268 wrote to memory of 568	1268	Explorer.EXE	chkdsk.exe
PID 1268 wrote to memory of 568	1268	Explorer.EXE	chkdsk.exe
PID 568 wrote to memory of 1620	568	chkdsk.exe	cmd.exe
PID 568 wrote to memory of 1620	568	chkdsk.exe	cmd.exe
PID 568 wrote to memory of 1620	568	chkdsk.exe	cmd.exe
PID 568 wrote to memory of 1620	568	chkdsk.exe	cmd.exe

C:\Users\Admin\AppData\Local\Temp\Shipping_Doc190dk0lwt837.exe
"C:\Users\Admin\AppData\Local\Temp\Shipping_Doc190dk0lwt837.exe"
1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1728

C:\Users\Admin\AppData\Local\Temp\Shipping_Doc190dk0lwt837.exe
"C:\Users\Admin\AppData\Local\Temp\Shipping_Doc190dk0lwt837.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:556

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

C:\Windows\SysWOW64\chkdsk.exe
"C:\Windows\SysWOW64\chkdsk.exe"
2⤵
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Enumerates system info in registry
- 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\Shipping_Doc190dk0lwt837.exe"
3⤵
- Deletes itself
PID:1620

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

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

\Users\Admin\AppData\Local\Temp\nstA5E.tmp\hkdklixzga.dll
MD5
fe53df25d11886ebd5c24164328ca8bf

SHA1
3d051e82d0bd8bbd4c5647ab11a36e8fe0407631

SHA256
d3827d83d541e98cff0bb89a27c2db75e59b62ed57a934cc8c9e6a9623864716

SHA512
578a786ea59572ae33b245314493bfda501eadde6bfcad2e20fd45e39e7d2e6e237403ed912f38aebd3fa79c582f27e7846f0896e22e01d1e276abcb8b32eecc

Download Submit
memory/556-61-0x0000000000480000-0x0000000000491000-memory.dmp

Filesize
68KB

Download
memory/556-57-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/556-58-0x000000000041D3E0-mapping.dmp

Download
memory/556-60-0x00000000008B0000-0x0000000000BB3000-memory.dmp

Filesize
3.0MB

Download
memory/568-65-0x0000000000FD0000-0x0000000000FD7000-memory.dmp

Filesize
28KB

Download
memory/568-63-0x0000000000000000-mapping.dmp

Download
memory/568-66-0x00000000000C0000-0x00000000000E9000-memory.dmp

Filesize
164KB

Download
memory/568-67-0x0000000000C20000-0x0000000000F23000-memory.dmp

Filesize
3.0MB

Download
memory/568-68-0x00000000009E0000-0x0000000000A70000-memory.dmp

Filesize
576KB

Download
memory/1268-62-0x0000000006A60000-0x0000000006B57000-memory.dmp

Filesize
988KB

Download
memory/1268-69-0x0000000008D40000-0x0000000008E37000-memory.dmp

Filesize
988KB

Download
memory/1620-64-0x0000000000000000-mapping.dmp

Download
memory/1728-55-0x00000000764D1000-0x00000000764D3000-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