xloader | 366b61ad47c5472a3dd209905af47ec46613296e80ae0f3c0c48d11c84bbd1b6

General

Target

$PLUGINSDIR/nbjkg.dll
Size

38KB
MD5

ff488c7d8f8f03c34e67a7ac3ebeaafe
SHA1

bbc4aacac09047d12f6ea5b54a24255e9389ba0e
SHA256

b6f7a133237e590893ca7e6aceb76d96c8bfff8c767dcd4db53a57b366366dfa
SHA512

9955013d4f601507ab35453a5b38063cadd2f75946ed998169d7fc42fe133deed31a0927693c8f131161df5281e0a2499b2b37359f7662b3e948c2cf407e11f1
SSDEEP

768:iNQs0OCYx0PV+EtiuxNs7sTHrHAm/N49v2PtyCjQphC/5BlfB4We8wCX04e7Z8Ym:5hOCggNsudB4We8w54e7Zhb6

Score

10^/10

xloader dhua discovery loader rat

Malware Config

Extracted

Family

xloader

Version

2.5

Campaign

dhua

Decoy

ketostar.club

icanmakeyoufamous.com

claimygdejection.com

garlicinterestedparent.xyz

bits-clicks.com

030atk.xyz

ballwiegand.com

logs-illumidesk.com

785686.com

flnewsfeed.com

transporteshrj.net

agenciamundodigital.online

bowersllc.com

urchncenw.com

wuauwuaumx.com

littlesportsacademy.com

xn--m3chb3ax0abdta3fwhk.com

prmarketings.com

jiaozhanlianmeng.com

whenisthestore.space

Signatures

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

Xloader payload 3 IoCs

rat

resource	yara_rule
behavioral3/memory/2720-4-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral3/memory/2720-10-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral3/memory/2920-16-0x0000000000080000-0x00000000000A9000-memory.dmp	xloader

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 3064 set thread context of 2720	3064	rundll32.exe	31
PID 2720 set thread context of 1212	2720	rundll32.exe	21
PID 2920 set thread context of 1212	2920	chkdsk.exe	21

System Location Discovery: System Language Discovery 1 TTPs 4 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	chkdsk.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry

T1012

System Information Discovery

T1082

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

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
2720	rundll32.exe
2720	rundll32.exe
2920	chkdsk.exe
2920	chkdsk.exe
2920	chkdsk.exe
2920	chkdsk.exe
2920	chkdsk.exe
2920	chkdsk.exe
2920	chkdsk.exe
2920	chkdsk.exe
2920	chkdsk.exe
2920	chkdsk.exe
2920	chkdsk.exe
2920	chkdsk.exe
2920	chkdsk.exe
2920	chkdsk.exe
2920	chkdsk.exe
2920	chkdsk.exe
2920	chkdsk.exe
2920	chkdsk.exe
2920	chkdsk.exe
2920	chkdsk.exe
2920	chkdsk.exe
2920	chkdsk.exe
2920	chkdsk.exe
2920	chkdsk.exe
2920	chkdsk.exe
2920	chkdsk.exe
2920	chkdsk.exe
2920	chkdsk.exe
2920	chkdsk.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
2720	rundll32.exe
2720	rundll32.exe
2720	rundll32.exe
2920	chkdsk.exe
2920	chkdsk.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2720	rundll32.exe
Token: SeDebugPrivilege	2920	chkdsk.exe

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 2120 wrote to memory of 3064	2120	rundll32.exe	30
PID 2120 wrote to memory of 3064	2120	rundll32.exe	30
PID 2120 wrote to memory of 3064	2120	rundll32.exe	30
PID 2120 wrote to memory of 3064	2120	rundll32.exe	30
PID 2120 wrote to memory of 3064	2120	rundll32.exe	30
PID 2120 wrote to memory of 3064	2120	rundll32.exe	30
PID 2120 wrote to memory of 3064	2120	rundll32.exe	30
PID 3064 wrote to memory of 2720	3064	rundll32.exe	31
PID 3064 wrote to memory of 2720	3064	rundll32.exe	31
PID 3064 wrote to memory of 2720	3064	rundll32.exe	31
PID 3064 wrote to memory of 2720	3064	rundll32.exe	31
PID 3064 wrote to memory of 2720	3064	rundll32.exe	31
PID 3064 wrote to memory of 2720	3064	rundll32.exe	31
PID 3064 wrote to memory of 2720	3064	rundll32.exe	31
PID 3064 wrote to memory of 2720	3064	rundll32.exe	31
PID 3064 wrote to memory of 2720	3064	rundll32.exe	31
PID 3064 wrote to memory of 2720	3064	rundll32.exe	31
PID 1212 wrote to memory of 2920	1212	Explorer.EXE	32
PID 1212 wrote to memory of 2920	1212	Explorer.EXE	32
PID 1212 wrote to memory of 2920	1212	Explorer.EXE	32
PID 1212 wrote to memory of 2920	1212	Explorer.EXE	32
PID 2920 wrote to memory of 2156	2920	chkdsk.exe	33
PID 2920 wrote to memory of 2156	2920	chkdsk.exe	33
PID 2920 wrote to memory of 2156	2920	chkdsk.exe	33
PID 2920 wrote to memory of 2156	2920	chkdsk.exe	33

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1212
- C:\Windows\system32\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\nbjkg.dll,#1
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2120
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\nbjkg.dll,#1
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3064
  - - C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\nbjkg.dll,#1
      4⤵
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: MapViewOfSection
      Suspicious use of AdjustPrivilegeToken
      PID:2720
- C:\Windows\SysWOW64\chkdsk.exe
  "C:\Windows\SysWOW64\chkdsk.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Enumerates system info in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2920
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\SysWOW64\rundll32.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2156

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1212-13-0x0000000004F00000-0x0000000005072000-memory.dmp

Filesize
1.4MB

Download
memory/1212-17-0x0000000004F00000-0x0000000005072000-memory.dmp

Filesize
1.4MB

Download
memory/1212-12-0x0000000003F90000-0x0000000004190000-memory.dmp

Filesize
2.0MB

Download
memory/2720-4-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/2720-8-0x0000000002110000-0x0000000002413000-memory.dmp

Filesize
3.0MB

Download
memory/2720-10-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/2720-11-0x00000000001C0000-0x00000000001D1000-memory.dmp

Filesize
68KB

Download
memory/2920-14-0x0000000000C00000-0x0000000000C07000-memory.dmp

Filesize
28KB

Download
memory/2920-15-0x0000000000C00000-0x0000000000C07000-memory.dmp

Filesize
28KB

Download
memory/2920-16-0x0000000000080000-0x00000000000A9000-memory.dmp

Filesize
164KB

Download
memory/3064-6-0x00000000749F0000-0x00000000749FD000-memory.dmp

Filesize
52KB

Download
memory/3064-7-0x0000000074A00000-0x0000000074A0D000-memory.dmp

Filesize
52KB

Download
memory/3064-5-0x0000000074AA0000-0x0000000074AAD000-memory.dmp

Filesize
52KB

Download
memory/3064-0-0x0000000074AA0000-0x0000000074AAD000-memory.dmp

Filesize
52KB

Download
memory/3064-1-0x0000000074A00000-0x0000000074A0D000-memory.dmp

Filesize
52KB

Download
memory/3064-2-0x00000000749F0000-0x00000000749FD000-memory.dmp

Filesize
52KB

Download
memory/3064-3-0x0000000074AA0000-0x0000000074AAD000-memory.dmp

Filesize
52KB

Download

Analysis

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