xloader | 18e91cbaa2d04fa969e97e947ccd011d494f68eb6375b067f0342a7765fb3119

General

Target

$PLUGINSDIR/zntsolrgxs.dll
Size

38KB
MD5

fe76b0ef249aebd98f82d6437721c047
SHA1

b1d40595e05da9c6f8627885b36177d4ecd54f21
SHA256

39724fa50de7a8937dec84a3f00fe23c9dea895d312bdce8133db18f15ee1a81
SHA512

abff3bc26f23c3c864bca8bb4ef1191278bb88bf5d604db949a822fc98525bcecdc21acceffbca1aae5557c8a13e9e15092837bc1c16b3ec2d03c6b3fc8fd725
SSDEEP

384:429M1kCo19eJhv2BqFKrtR1836QF0q5knzxRCT+7BoY3Vq5b1520IVXOFCfl:4rQ19eJhDFKJ7arF0gkpoY3w5baVMA

Score

10^/10

xloader d6pu discovery loader rat

Malware Config

Extracted

Family

xloader

Version

2.5

Campaign

d6pu

Decoy

ifixcreditatl.com

productgeekout.com

electricvehicle-insurance.com

kuiper.business

cloudenglabs.com

gorbepari.com

collecthappy.com

amykrussell.store

clubhousebusinesscourse.com

aplussinifiklima.com

slewis.design

atticwitt.com

galenota.com

griphook.xyz

gsjbd1.club

bootystrapfitness.com

emflawrhks.com

alternativedata.investments

eyehealthtnpasumo3.xyz

naturanzaec.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/2172-1-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral3/memory/2172-5-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral3/memory/1436-10-0x0000000000080000-0x00000000000A9000-memory.dmp	xloader

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 3060 set thread context of 2172	3060	rundll32.exe	31
PID 2172 set thread context of 1112	2172	rundll32.exe	20
PID 1436 set thread context of 1112	1436	explorer.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	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
2172	rundll32.exe
2172	rundll32.exe
1436	explorer.exe
1436	explorer.exe
1436	explorer.exe
1436	explorer.exe
1436	explorer.exe
1436	explorer.exe
1436	explorer.exe
1436	explorer.exe
1436	explorer.exe
1436	explorer.exe
1436	explorer.exe
1436	explorer.exe
1436	explorer.exe
1436	explorer.exe
1436	explorer.exe
1436	explorer.exe
1436	explorer.exe
1436	explorer.exe
1436	explorer.exe
1436	explorer.exe
1436	explorer.exe
1436	explorer.exe
1436	explorer.exe
1436	explorer.exe
1436	explorer.exe
1436	explorer.exe
1436	explorer.exe
1436	explorer.exe
1436	explorer.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
2172	rundll32.exe
2172	rundll32.exe
2172	rundll32.exe
1436	explorer.exe
1436	explorer.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2172	rundll32.exe
Token: SeDebugPrivilege	1436	explorer.exe

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 2520 wrote to memory of 3060	2520	rundll32.exe	30
PID 2520 wrote to memory of 3060	2520	rundll32.exe	30
PID 2520 wrote to memory of 3060	2520	rundll32.exe	30
PID 2520 wrote to memory of 3060	2520	rundll32.exe	30
PID 2520 wrote to memory of 3060	2520	rundll32.exe	30
PID 2520 wrote to memory of 3060	2520	rundll32.exe	30
PID 2520 wrote to memory of 3060	2520	rundll32.exe	30
PID 3060 wrote to memory of 2172	3060	rundll32.exe	31
PID 3060 wrote to memory of 2172	3060	rundll32.exe	31
PID 3060 wrote to memory of 2172	3060	rundll32.exe	31
PID 3060 wrote to memory of 2172	3060	rundll32.exe	31
PID 3060 wrote to memory of 2172	3060	rundll32.exe	31
PID 3060 wrote to memory of 2172	3060	rundll32.exe	31
PID 3060 wrote to memory of 2172	3060	rundll32.exe	31
PID 3060 wrote to memory of 2172	3060	rundll32.exe	31
PID 3060 wrote to memory of 2172	3060	rundll32.exe	31
PID 3060 wrote to memory of 2172	3060	rundll32.exe	31
PID 1112 wrote to memory of 1436	1112	Explorer.EXE	32
PID 1112 wrote to memory of 1436	1112	Explorer.EXE	32
PID 1112 wrote to memory of 1436	1112	Explorer.EXE	32
PID 1112 wrote to memory of 1436	1112	Explorer.EXE	32
PID 1436 wrote to memory of 2244	1436	explorer.exe	33
PID 1436 wrote to memory of 2244	1436	explorer.exe	33
PID 1436 wrote to memory of 2244	1436	explorer.exe	33
PID 1436 wrote to memory of 2244	1436	explorer.exe	33

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1112
- C:\Windows\system32\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\zntsolrgxs.dll,#1
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2520
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\zntsolrgxs.dll,#1
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3060
  - - C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\zntsolrgxs.dll,#1
      4⤵
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: MapViewOfSection
      Suspicious use of AdjustPrivilegeToken
      PID:2172
- C:\Windows\SysWOW64\explorer.exe
  "C:\Windows\SysWOW64\explorer.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:1436
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\SysWOW64\rundll32.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2244

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/1112-7-0x0000000005310000-0x000000000540A000-memory.dmp

Filesize
1000KB

Download
memory/1112-11-0x0000000005310000-0x000000000540A000-memory.dmp

Filesize
1000KB

Download
memory/1436-8-0x00000000005D0000-0x0000000000851000-memory.dmp

Filesize
2.5MB

Download
memory/1436-9-0x00000000005D0000-0x0000000000851000-memory.dmp

Filesize
2.5MB

Download
memory/1436-10-0x0000000000080000-0x00000000000A9000-memory.dmp

Filesize
164KB

Download
memory/2172-1-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/2172-2-0x0000000002170000-0x0000000002473000-memory.dmp

Filesize
3.0MB

Download
memory/2172-5-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/2172-6-0x0000000000430000-0x0000000000441000-memory.dmp

Filesize
68KB

Download
memory/3060-0-0x0000000010009000-0x000000001000B000-memory.dmp

Filesize
8KB

Download

Analysis

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