xloader | 90ab4fe0b7564a926e0559121ce67efd73bb8dd52c5a285da1d86b646b8b03c4

General

Target

$PLUGINSDIR/mcubau.dll
Size

5KB
MD5

2ba43f6b8df6085a174eb44e5c3d9bcd
SHA1

ff2b5f680bb972f116e41de8e2a9cef6b0cad9ab
SHA256

59d449a56897e850dcd276ad817fced403f3318cd9c08e1d7c70ed96db7092d8
SHA512

a72f4f5b3297530478e4d37b63b7e673962a405e2f2d58dd539ee5ad3509ea196cb4bafaf8e09cb584e7ffc4972de709e732e44bc38dfe454d3b65a41a99524e
SSDEEP

48:a97yH52gMWZhfChEsHIGmEsH/Gt4BKiZ/seNkTHfav6yYZmEeSRuqS:1H9T4IGN4/GCBKxfQKuix

Score

10^/10

xloader xgxp discovery loader rat

Malware Config

Extracted

Family

xloader

Version

2.3

Campaign

xgxp

Decoy

sin7799.com

konkondwa.com

fixmylot.com

redbirdscottsdale.com

cotcoservices.com

jonwcvxw.com

scotthaeberletriathlon.com

bob816.com

pinukimgood.life

ambitiondurable-ce.com

jioholdingscorp.com

thisisadreamright.com

asaptebal.xyz

sloanehealth.com

huugmooren.com

birdsbarber.supply

albeider.com

theperfectcolour.com

alibabulilmhouston.com

chaing-list.xyz

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/2260-5-0x0000000000400000-0x0000000000428000-memory.dmp	xloader
behavioral3/memory/2260-10-0x0000000000400000-0x0000000000428000-memory.dmp	xloader
behavioral3/memory/2548-16-0x0000000000080000-0x00000000000A8000-memory.dmp	xloader

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2264 set thread context of 2260	2264	rundll32.exe	30
PID 2260 set thread context of 1220	2260	rundll32.exe	21
PID 2548 set thread context of 1220	2548	cmmon32.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	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.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
2260	rundll32.exe
2260	rundll32.exe
2548	cmmon32.exe
2548	cmmon32.exe
2548	cmmon32.exe
2548	cmmon32.exe
2548	cmmon32.exe
2548	cmmon32.exe
2548	cmmon32.exe
2548	cmmon32.exe
2548	cmmon32.exe
2548	cmmon32.exe
2548	cmmon32.exe
2548	cmmon32.exe
2548	cmmon32.exe
2548	cmmon32.exe
2548	cmmon32.exe
2548	cmmon32.exe
2548	cmmon32.exe
2548	cmmon32.exe
2548	cmmon32.exe
2548	cmmon32.exe
2548	cmmon32.exe
2548	cmmon32.exe
2548	cmmon32.exe
2548	cmmon32.exe
2548	cmmon32.exe
2548	cmmon32.exe
2548	cmmon32.exe
2548	cmmon32.exe
2548	cmmon32.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
2264	rundll32.exe
2260	rundll32.exe
2260	rundll32.exe
2260	rundll32.exe
2548	cmmon32.exe
2548	cmmon32.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2260	rundll32.exe
Token: SeDebugPrivilege	2548	cmmon32.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2248 wrote to memory of 2264	2248	rundll32.exe	29
PID 2248 wrote to memory of 2264	2248	rundll32.exe	29
PID 2248 wrote to memory of 2264	2248	rundll32.exe	29
PID 2248 wrote to memory of 2264	2248	rundll32.exe	29
PID 2248 wrote to memory of 2264	2248	rundll32.exe	29
PID 2248 wrote to memory of 2264	2248	rundll32.exe	29
PID 2248 wrote to memory of 2264	2248	rundll32.exe	29
PID 2264 wrote to memory of 2260	2264	rundll32.exe	30
PID 2264 wrote to memory of 2260	2264	rundll32.exe	30
PID 2264 wrote to memory of 2260	2264	rundll32.exe	30
PID 2264 wrote to memory of 2260	2264	rundll32.exe	30
PID 2264 wrote to memory of 2260	2264	rundll32.exe	30
PID 2264 wrote to memory of 2260	2264	rundll32.exe	30
PID 2264 wrote to memory of 2260	2264	rundll32.exe	30
PID 2264 wrote to memory of 2260	2264	rundll32.exe	30
PID 1220 wrote to memory of 2548	1220	Explorer.EXE	31
PID 1220 wrote to memory of 2548	1220	Explorer.EXE	31
PID 1220 wrote to memory of 2548	1220	Explorer.EXE	31
PID 1220 wrote to memory of 2548	1220	Explorer.EXE	31
PID 2548 wrote to memory of 2508	2548	cmmon32.exe	32
PID 2548 wrote to memory of 2508	2548	cmmon32.exe	32
PID 2548 wrote to memory of 2508	2548	cmmon32.exe	32
PID 2548 wrote to memory of 2508	2548	cmmon32.exe	32

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1220
- C:\Windows\system32\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\mcubau.dll,#1
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2248
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\mcubau.dll,#1
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of WriteProcessMemory
    PID:2264
  - - C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\mcubau.dll,#1
      4⤵
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: MapViewOfSection
      Suspicious use of AdjustPrivilegeToken
      PID:2260
- 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:2548
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\SysWOW64\rundll32.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2508

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

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/1220-17-0x0000000004E60000-0x0000000004FC6000-memory.dmp

Filesize
1.4MB

Download
memory/1220-13-0x0000000004E60000-0x0000000004FC6000-memory.dmp

Filesize
1.4MB

Download
memory/2260-8-0x00000000020A0000-0x00000000023A3000-memory.dmp

Filesize
3.0MB

Download
memory/2260-11-0x0000000000290000-0x00000000002A0000-memory.dmp

Filesize
64KB

Download
memory/2260-10-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/2260-5-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/2264-4-0x00000000001C0000-0x00000000001C2000-memory.dmp

Filesize
8KB

Download
memory/2264-7-0x00000000754E0000-0x00000000754E6000-memory.dmp

Filesize
24KB

Download
memory/2264-6-0x00000000754D0000-0x00000000754D6000-memory.dmp

Filesize
24KB

Download
memory/2264-0-0x00000000754E0000-0x00000000754E6000-memory.dmp

Filesize
24KB

Download
memory/2264-1-0x00000000754D0000-0x00000000754D6000-memory.dmp

Filesize
24KB

Download
memory/2264-2-0x00000000754E0000-0x00000000754E6000-memory.dmp

Filesize
24KB

Download
memory/2264-3-0x00000000754D0000-0x00000000754D6000-memory.dmp

Filesize
24KB

Download
memory/2548-14-0x0000000000870000-0x000000000087D000-memory.dmp

Filesize
52KB

Download
memory/2548-15-0x0000000000870000-0x000000000087D000-memory.dmp

Filesize
52KB

Download
memory/2548-16-0x0000000000080000-0x00000000000A8000-memory.dmp

Filesize
160KB

Download

Analysis

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