xloader | 12e576f977f74152cdf32cdfd8ea6904e3728f69a4c67bf30f449d6a0623ea41

General

Target

package delivery failed.exe
Size

333KB
MD5

696f70a52e873abbb6fe59673092d9d8
SHA1

e106d3dcebaa06ee19a246620d8e392d3977f19d
SHA256

a4b5549649c6a3bb9deccccd340fbbb60519fcb0e4091004628ea3b611dc0e3c
SHA512

ef7d57821de9e65b023fa53d38a2f4998ae11783834ecc41af1ea77b8c7e2307c22f48bbe2f7cca02b984f17292431dcf8796a0b4f501bfbe18458980906d6c2
SSDEEP

6144:BBlL/ClGiQcRn2GMYjZxHLweHq5MZ7qVZq+ElZqwA3XHqsV/n:HQlBQcd3MYjZxHUeHwMZuV8XlZqH3

Score

10^/10

xloader u4an discovery loader rat

Malware Config

Extracted

Family

xloader

Version

2.5

Campaign

u4an

Decoy

crossroadsinndfs.com

reichsland.top

tomrose.net

zoneindrones.net

814851.com

pingblackjack.com

pdsolutions.tech

sweethomecolorado.net

witterx.com

beneschcyberconsulting.com

electroborg.com

metodopita.com

picklericktoken.com

alkhawatercafe.com

lelittnpasumo4.xyz

osrr.top

khonnaisoi.com

jbbaudienstleistungen.com

theconfidenceboosterprogram.com

diamondtrade.net

Signatures

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

Xloader payload 3 IoCs

rat

resource	yara_rule
behavioral1/memory/2824-9-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral1/memory/2824-11-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral1/memory/2692-17-0x00000000000C0000-0x00000000000E9000-memory.dmp	xloader

Deletes itself 1 IoCs

pid	Process
2584	cmd.exe

Loads dropped DLL 1 IoCs

pid	Process
2668	package delivery failed.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2668 set thread context of 2824	2668	package delivery failed.exe	30
PID 2824 set thread context of 1252	2824	package delivery failed.exe	21
PID 2692 set thread context of 1252	2692	cmmon32.exe	21

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	package delivery failed.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmmon32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
2824	package delivery failed.exe
2824	package delivery failed.exe
2692	cmmon32.exe
2692	cmmon32.exe
2692	cmmon32.exe
2692	cmmon32.exe
2692	cmmon32.exe
2692	cmmon32.exe
2692	cmmon32.exe
2692	cmmon32.exe
2692	cmmon32.exe
2692	cmmon32.exe
2692	cmmon32.exe
2692	cmmon32.exe
2692	cmmon32.exe
2692	cmmon32.exe
2692	cmmon32.exe
2692	cmmon32.exe
2692	cmmon32.exe
2692	cmmon32.exe
2692	cmmon32.exe
2692	cmmon32.exe
2692	cmmon32.exe
2692	cmmon32.exe
2692	cmmon32.exe
2692	cmmon32.exe
2692	cmmon32.exe
2692	cmmon32.exe
2692	cmmon32.exe
2692	cmmon32.exe
2692	cmmon32.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
2824	package delivery failed.exe
2824	package delivery failed.exe
2824	package delivery failed.exe
2692	cmmon32.exe
2692	cmmon32.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2824	package delivery failed.exe
Token: SeDebugPrivilege	2692	cmmon32.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2668 wrote to memory of 2824	2668	package delivery failed.exe	30
PID 2668 wrote to memory of 2824	2668	package delivery failed.exe	30
PID 2668 wrote to memory of 2824	2668	package delivery failed.exe	30
PID 2668 wrote to memory of 2824	2668	package delivery failed.exe	30
PID 2668 wrote to memory of 2824	2668	package delivery failed.exe	30
PID 2668 wrote to memory of 2824	2668	package delivery failed.exe	30
PID 2668 wrote to memory of 2824	2668	package delivery failed.exe	30
PID 1252 wrote to memory of 2692	1252	Explorer.EXE	31
PID 1252 wrote to memory of 2692	1252	Explorer.EXE	31
PID 1252 wrote to memory of 2692	1252	Explorer.EXE	31
PID 1252 wrote to memory of 2692	1252	Explorer.EXE	31
PID 2692 wrote to memory of 2584	2692	cmmon32.exe	32
PID 2692 wrote to memory of 2584	2692	cmmon32.exe	32
PID 2692 wrote to memory of 2584	2692	cmmon32.exe	32
PID 2692 wrote to memory of 2584	2692	cmmon32.exe	32

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1252
- C:\Users\Admin\AppData\Local\Temp\package delivery failed.exe
  "C:\Users\Admin\AppData\Local\Temp\package delivery failed.exe"
  2⤵
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2668
- - C:\Users\Admin\AppData\Local\Temp\package delivery failed.exe
    "C:\Users\Admin\AppData\Local\Temp\package delivery failed.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2824
- C:\Windows\SysWOW64\cmmon32.exe
  "C:\Windows\SysWOW64\cmmon32.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2692
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\package delivery failed.exe"
    3⤵
    - Deletes itself
    - System Location Discovery: System Language Discovery
    PID:2584

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\nst3592.tmp\srrk.dll

Filesize
99KB

MD5
a3caa7e8895fb8eccc4cfc84c2f37283

SHA1
0c10231f8b45a1f6d9037fab396310a35fc572c5

SHA256
7b153187b30e47fda2f39d2621c04dded4e6776fabbebf5cc6a6a157a8324c02

SHA512
b96bdf0909a777ff559d31ac0600a5bbf90fcfa322232b4818ee275a2fda7638c4d06cb493f746a79e30367400ce2d252c46918e3dfbed851be81d1399b42c16

Download Submit
memory/1252-12-0x0000000006D60000-0x0000000006EE8000-memory.dmp

Filesize
1.5MB

Download
memory/1252-18-0x0000000006D60000-0x0000000006EE8000-memory.dmp

Filesize
1.5MB

Download
memory/2668-7-0x0000000075007000-0x0000000075009000-memory.dmp

Filesize
8KB

Download
memory/2692-15-0x0000000000EA0000-0x0000000000EAD000-memory.dmp

Filesize
52KB

Download
memory/2692-16-0x0000000000EA0000-0x0000000000EAD000-memory.dmp

Filesize
52KB

Download
memory/2692-17-0x00000000000C0000-0x00000000000E9000-memory.dmp

Filesize
164KB

Download
memory/2824-9-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/2824-11-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download

Analysis

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