xloader | c9331df750653afe477b1dcd6663a80a6b579af04fc4dd50ffefd1c0a12518a3

General

Target

$PLUGINSDIR/fbban.dll
Size

94KB
MD5

f54a3744a8bc9947fc4f01f9595010e3
SHA1

b2e5c87d16cf29b55753297fefd6b7bab4cc77b0
SHA256

a5cf6cd784167eab65e5c2b9a57d3df96ac0d89c2ddd0743674471e42100dcfd
SHA512

9ff89e8b5234ba8fb9887fc589d4b6b334211058d9cc252a3f382d56783ea04d8524d54bc6f131bc7ad3246cd6bad95564086a6ae90042a42d441ac25a93dcf8
SSDEEP

1536:h6jveRFsu0y4UADdfD4rTz86ztZSPiOqwvgjw9dPMEW0nsWjcdvQByT:MRRvSwYDOKYMEW0IvQBy

Score

10^/10

xloader ycgc discovery loader rat

Malware Config

Extracted

Family

xloader

Version

2.5

Campaign

ycgc

Decoy

radharanipestcontrol.com

danye-wang.net

thgn3.xyz

clasdcharts.com

eighty20consults.com

rivian.email

paulapossetto.com

killwinesports.com

tgfwatches.com

help-sources.com

dazzlingbad.info

sgpropertymanagementllc.net

crokobos.info

pendekarherbshq.com

beheld3d.art

voipwallet.com

solideo.fail

cooperativecareitalia.com

sunlandstreet.com

carandmoore.com

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/1332-1-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral3/memory/1332-5-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral3/memory/2428-9-0x0000000000100000-0x0000000000129000-memory.dmp	xloader

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 1968 set thread context of 1332	1968	rundll32.exe	31
PID 1332 set thread context of 1108	1332	rundll32.exe	20
PID 2428 set thread context of 1108	2428	wininit.exe	20

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	wininit.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
1332	rundll32.exe
1332	rundll32.exe
2428	wininit.exe
2428	wininit.exe
2428	wininit.exe
2428	wininit.exe
2428	wininit.exe
2428	wininit.exe
2428	wininit.exe
2428	wininit.exe
2428	wininit.exe
2428	wininit.exe
2428	wininit.exe
2428	wininit.exe
2428	wininit.exe
2428	wininit.exe
2428	wininit.exe
2428	wininit.exe
2428	wininit.exe
2428	wininit.exe
2428	wininit.exe
2428	wininit.exe
2428	wininit.exe
2428	wininit.exe
2428	wininit.exe
2428	wininit.exe
2428	wininit.exe
2428	wininit.exe
2428	wininit.exe
2428	wininit.exe
2428	wininit.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
1332	rundll32.exe
1332	rundll32.exe
1332	rundll32.exe
2428	wininit.exe
2428	wininit.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1332	rundll32.exe
Token: SeDebugPrivilege	2428	wininit.exe

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 2536 wrote to memory of 1968	2536	rundll32.exe	30
PID 2536 wrote to memory of 1968	2536	rundll32.exe	30
PID 2536 wrote to memory of 1968	2536	rundll32.exe	30
PID 2536 wrote to memory of 1968	2536	rundll32.exe	30
PID 2536 wrote to memory of 1968	2536	rundll32.exe	30
PID 2536 wrote to memory of 1968	2536	rundll32.exe	30
PID 2536 wrote to memory of 1968	2536	rundll32.exe	30
PID 1968 wrote to memory of 1332	1968	rundll32.exe	31
PID 1968 wrote to memory of 1332	1968	rundll32.exe	31
PID 1968 wrote to memory of 1332	1968	rundll32.exe	31
PID 1968 wrote to memory of 1332	1968	rundll32.exe	31
PID 1968 wrote to memory of 1332	1968	rundll32.exe	31
PID 1968 wrote to memory of 1332	1968	rundll32.exe	31
PID 1968 wrote to memory of 1332	1968	rundll32.exe	31
PID 1968 wrote to memory of 1332	1968	rundll32.exe	31
PID 1968 wrote to memory of 1332	1968	rundll32.exe	31
PID 1968 wrote to memory of 1332	1968	rundll32.exe	31
PID 1108 wrote to memory of 2428	1108	Explorer.EXE	32
PID 1108 wrote to memory of 2428	1108	Explorer.EXE	32
PID 1108 wrote to memory of 2428	1108	Explorer.EXE	32
PID 1108 wrote to memory of 2428	1108	Explorer.EXE	32
PID 2428 wrote to memory of 2312	2428	wininit.exe	33
PID 2428 wrote to memory of 2312	2428	wininit.exe	33
PID 2428 wrote to memory of 2312	2428	wininit.exe	33
PID 2428 wrote to memory of 2312	2428	wininit.exe	33

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1108
- C:\Windows\system32\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\fbban.dll,#1
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2536
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\fbban.dll,#1
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1968
  - - C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\fbban.dll,#1
      4⤵
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: MapViewOfSection
      Suspicious use of AdjustPrivilegeToken
      PID:1332
- C:\Windows\SysWOW64\wininit.exe
  "C:\Windows\SysWOW64\wininit.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:2428
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\SysWOW64\rundll32.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2312

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/1108-6-0x0000000003D30000-0x0000000003DE1000-memory.dmp

Filesize
708KB

Download
memory/1108-10-0x0000000003D30000-0x0000000003DE1000-memory.dmp

Filesize
708KB

Download
memory/1332-1-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/1332-3-0x00000000020F0000-0x00000000023F3000-memory.dmp

Filesize
3.0MB

Download
memory/1332-4-0x00000000001A0000-0x00000000001B1000-memory.dmp

Filesize
68KB

Download
memory/1332-5-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/1968-0-0x0000000010015000-0x0000000010017000-memory.dmp

Filesize
8KB

Download
memory/2428-8-0x0000000000680000-0x000000000069A000-memory.dmp

Filesize
104KB

Download
memory/2428-7-0x0000000000680000-0x000000000069A000-memory.dmp

Filesize
104KB

Download
memory/2428-9-0x0000000000100000-0x0000000000129000-memory.dmp

Filesize
164KB

Download

Analysis

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