xloader | 3abc1fe95d566420c125be90f7ac29c3f9e59876cd046c99973a5241f8ee98ad

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
21/11/2024, 20:10

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General

Target

Remittance_Advice.exe
Size

379KB
MD5

da19ef06a39a0b1594d3b6239b5ef1ec
SHA1

8fefee7414e25411b6f0fd2eb66c1b7380c83c2a
SHA256

7f9f8cc38a55f713a4d06144cf9e9ebb7967d77aa7ed51aef8aebe70e374c489
SHA512

465f311067c27c87970df0bb5a315f2ae48646578567af10d7622ca756413b9392faa0b47bbfeedc66b9720b84d72b1273914e2a377f02915a7697677189ece8
SSDEEP

6144:MVUNLTYOapBpxKqWDaAE59TfGBw+MeYBVK0ilLlRdLvN34Q8a6:MVUVjapBpFWS9qBw+Mbk0ilLlrFca

Score

10^/10

xloader tk66 discovery loader rat

Malware Config

Extracted

Family

xloader

Version

2.5

Campaign

tk66

Decoy

builditatlanta.com

nkrevolution.online

mgm-photography.com

g5tgbt5pro.club

lvjia.store

dealsmyweb.com

edgyveggie.biz

thereview.community

drkittipat.com

noordinaryadvice.com

radiakeep.com

hughers3.com

jewerylsh.com

willpowerleggings.com

wmxldn.top

haberinolsunmilas.com

deltamtrading.com

thegaragecloset.com

wolffsurf.com

vbitleader.com

Signatures

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

Xloader payload 3 IoCs

rat

resource	yara_rule
behavioral2/files/0x0008000000023c8e-10.dat	xloader
behavioral2/memory/4996-18-0x00000000007C0000-0x00000000007E9000-memory.dmp	xloader
behavioral2/memory/3340-23-0x00000000007B0000-0x00000000007D9000-memory.dmp	xloader

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	Remittance_Advice.exe

Executes dropped EXE 1 IoCs

pid	Process
4996	bin.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4996 set thread context of 3440	4996	bin.exe	56
PID 3340 set thread context of 3440	3340	wlanext.exe	56

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 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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Remittance_Advice.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bin.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wlanext.exe

Suspicious behavior: EnumeratesProcesses 62 IoCs

pid	Process
4996	bin.exe
4996	bin.exe
4996	bin.exe
4996	bin.exe
3340	wlanext.exe
3340	wlanext.exe
3340	wlanext.exe
3340	wlanext.exe
3340	wlanext.exe
3340	wlanext.exe
3340	wlanext.exe
3340	wlanext.exe
3340	wlanext.exe
3340	wlanext.exe
3340	wlanext.exe
3340	wlanext.exe
3340	wlanext.exe
3340	wlanext.exe
3340	wlanext.exe
3340	wlanext.exe
3340	wlanext.exe
3340	wlanext.exe
3340	wlanext.exe
3340	wlanext.exe
3340	wlanext.exe
3340	wlanext.exe
3340	wlanext.exe
3340	wlanext.exe
3340	wlanext.exe
3340	wlanext.exe
3340	wlanext.exe
3340	wlanext.exe
3340	wlanext.exe
3340	wlanext.exe
3340	wlanext.exe
3340	wlanext.exe
3340	wlanext.exe
3340	wlanext.exe
3340	wlanext.exe
3340	wlanext.exe
3340	wlanext.exe
3340	wlanext.exe
3340	wlanext.exe
3340	wlanext.exe
3340	wlanext.exe
3340	wlanext.exe
3340	wlanext.exe
3340	wlanext.exe
3340	wlanext.exe
3340	wlanext.exe
3340	wlanext.exe
3340	wlanext.exe
3340	wlanext.exe
3340	wlanext.exe
3340	wlanext.exe
3340	wlanext.exe
3340	wlanext.exe
3340	wlanext.exe
3340	wlanext.exe
3340	wlanext.exe
3340	wlanext.exe
3340	wlanext.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
4996	bin.exe
4996	bin.exe
4996	bin.exe
3340	wlanext.exe
3340	wlanext.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4996	bin.exe
Token: SeDebugPrivilege	3340	wlanext.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2112 wrote to memory of 4996	2112	Remittance_Advice.exe	83
PID 2112 wrote to memory of 4996	2112	Remittance_Advice.exe	83
PID 2112 wrote to memory of 4996	2112	Remittance_Advice.exe	83
PID 3440 wrote to memory of 3340	3440	Explorer.EXE	84
PID 3440 wrote to memory of 3340	3440	Explorer.EXE	84
PID 3440 wrote to memory of 3340	3440	Explorer.EXE	84
PID 3340 wrote to memory of 516	3340	wlanext.exe	88
PID 3340 wrote to memory of 516	3340	wlanext.exe	88
PID 3340 wrote to memory of 516	3340	wlanext.exe	88

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:3440
- C:\Users\Admin\AppData\Local\Temp\Remittance_Advice.exe
  "C:\Users\Admin\AppData\Local\Temp\Remittance_Advice.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2112
- - C:\Users\Admin\AppData\Local\Temp\bin.exe
    "C:\Users\Admin\AppData\Local\Temp\bin.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:4996
- C:\Windows\SysWOW64\wlanext.exe
  "C:\Windows\SysWOW64\wlanext.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:3340
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\bin.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:516

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\bin.exe

Filesize
163KB

MD5
46a5d43160a90e7c6806e1e0ff188b40

SHA1
53d72e81fcc566516a332af6f52e5a8757db7f4a

SHA256
c39887cba6df78d7eb18f00d70f7f1f6871dd8055e0291d4a337666346b37180

SHA512
5b8d7de931b5620dff82de8bbc7adda7f4600563256c5f01db7cfcabd054605e033bd8413ef81bb9a814513459bbe9dfa99bf1152a069498cc2c986d409808db

Download Submit
memory/2112-0-0x0000000074EEE000-0x0000000074EEF000-memory.dmp

Filesize
4KB

Download
memory/2112-1-0x0000000000100000-0x0000000000164000-memory.dmp

Filesize
400KB

Download
memory/2112-2-0x0000000005120000-0x00000000056C4000-memory.dmp

Filesize
5.6MB

Download
memory/2112-3-0x0000000004B70000-0x0000000004C02000-memory.dmp

Filesize
584KB

Download
memory/2112-4-0x0000000004B00000-0x0000000004B34000-memory.dmp

Filesize
208KB

Download
memory/2112-6-0x0000000074EE0000-0x0000000075690000-memory.dmp

Filesize
7.7MB

Download
memory/2112-15-0x0000000074EE0000-0x0000000075690000-memory.dmp

Filesize
7.7MB

Download
memory/3340-22-0x0000000000950000-0x0000000000967000-memory.dmp

Filesize
92KB

Download
memory/3340-20-0x0000000000950000-0x0000000000967000-memory.dmp

Filesize
92KB

Download
memory/3340-23-0x00000000007B0000-0x00000000007D9000-memory.dmp

Filesize
164KB

Download
memory/3440-19-0x0000000009960000-0x0000000009A67000-memory.dmp

Filesize
1.0MB

Download
memory/3440-24-0x0000000009960000-0x0000000009A67000-memory.dmp

Filesize
1.0MB

Download
memory/3440-28-0x00000000031C0000-0x00000000032A5000-memory.dmp

Filesize
916KB

Download
memory/3440-29-0x00000000031C0000-0x00000000032A5000-memory.dmp

Filesize
916KB

Download
memory/3440-31-0x00000000031C0000-0x00000000032A5000-memory.dmp

Filesize
916KB

Download
memory/4996-18-0x00000000007C0000-0x00000000007E9000-memory.dmp

Filesize
164KB

Download
memory/4996-17-0x00000000007DD000-0x00000000007DE000-memory.dmp

Filesize
4KB

Download
memory/4996-16-0x0000000000FC0000-0x000000000130A000-memory.dmp

Filesize
3.3MB

Download