xloader | 50df1fc76a41a970a44ac40efdd0113c599a7091891dc13c25e78abe52a97158

Resubmissions

19-04-2024 23:58

240419-31f5qsah44 10

19-04-2024 23:51

240419-3wagdsag36 10

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
19-04-2024 23:51

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

IMG_38575943.exe
Size

341KB
MD5

2a11ef715093c4429cd05dc3950c7f89
SHA1

3199e3c72fc349d9cce951c2c8830d88a8da4454
SHA256

50df1fc76a41a970a44ac40efdd0113c599a7091891dc13c25e78abe52a97158
SHA512

24f2d7a608d421258334144217e97dccdeb023d5e621774f213eda210a8937df0c7d12cfd02e8c96d5951011d6142a320ca3b40bedb8ac6ad5f95ccc6d3d2d0a
SSDEEP

6144:HqPwmYdAbc0C3LFDDOQmjUi0GL9jDAlPMKpPbd6j62AeI4KR0VoFtDFF7g:HqPwmYdAbc0CboQmjIGN6Pzd6j6/eWtU

Score

10^/10

xloader c6si loader rat

Malware Config

Extracted

Family

xloader

Version

2.5

Campaign

c6si

Decoy

tristateinc.construction

americanscaregroundstexas.com

kanimisoshiru.com

wihling.com

fishcheekstosa.com

parentsfuid.com

greenstandmarket.com

fc8fla8kzq.com

gametwist-83.club

jobsncvs.com

directrealtysells.com

avida2015.com

conceptasite.net

arkaneattire.com

indev-mobility.info

2160centurypark412.com

valefloor.com

septembership.com

stackflix.com

jimc0sales.net

Signatures

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

Xloader payload 4 IoCs

rat

resource	yara_rule
behavioral2/memory/1116-12-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral2/memory/1116-17-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral2/memory/1692-22-0x0000000000830000-0x0000000000859000-memory.dmp	xloader
behavioral2/memory/1692-24-0x0000000000830000-0x0000000000859000-memory.dmp	xloader

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 3600 set thread context of 1116	3600	IMG_38575943.exe	101
PID 1116 set thread context of 3424	1116	IMG_38575943.exe	56
PID 1692 set thread context of 3424	1692	chkdsk.exe	56

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

Modifies registry class 2 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\	Explorer.EXE
Key created	\REGISTRY\USER\S-1-5-21-2288054676-1871194608-3559553667-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\	Explorer.EXE

Suspicious behavior: EnumeratesProcesses 52 IoCs

pid	Process
1116	IMG_38575943.exe
1116	IMG_38575943.exe
1116	IMG_38575943.exe
1116	IMG_38575943.exe
1692	chkdsk.exe
1692	chkdsk.exe
1692	chkdsk.exe
1692	chkdsk.exe
1692	chkdsk.exe
1692	chkdsk.exe
1692	chkdsk.exe
1692	chkdsk.exe
1692	chkdsk.exe
1692	chkdsk.exe
1692	chkdsk.exe
1692	chkdsk.exe
1692	chkdsk.exe
1692	chkdsk.exe
1692	chkdsk.exe
1692	chkdsk.exe
1692	chkdsk.exe
1692	chkdsk.exe
1692	chkdsk.exe
1692	chkdsk.exe
1692	chkdsk.exe
1692	chkdsk.exe
1692	chkdsk.exe
1692	chkdsk.exe
1692	chkdsk.exe
1692	chkdsk.exe
1692	chkdsk.exe
1692	chkdsk.exe
1692	chkdsk.exe
1692	chkdsk.exe
1692	chkdsk.exe
1692	chkdsk.exe
1692	chkdsk.exe
1692	chkdsk.exe
1692	chkdsk.exe
1692	chkdsk.exe
1692	chkdsk.exe
1692	chkdsk.exe
1692	chkdsk.exe
1692	chkdsk.exe
1692	chkdsk.exe
1692	chkdsk.exe
1692	chkdsk.exe
1692	chkdsk.exe
1692	chkdsk.exe
1692	chkdsk.exe
1692	chkdsk.exe
1692	chkdsk.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3424	Explorer.EXE

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
1116	IMG_38575943.exe
1116	IMG_38575943.exe
1116	IMG_38575943.exe
1692	chkdsk.exe
1692	chkdsk.exe

Suspicious use of AdjustPrivilegeToken 14 IoCs

description	pid	Process
Token: SeDebugPrivilege	1116	IMG_38575943.exe
Token: SeShutdownPrivilege	3424	Explorer.EXE
Token: SeCreatePagefilePrivilege	3424	Explorer.EXE
Token: SeDebugPrivilege	1692	chkdsk.exe
Token: SeShutdownPrivilege	3424	Explorer.EXE
Token: SeCreatePagefilePrivilege	3424	Explorer.EXE
Token: SeShutdownPrivilege	3424	Explorer.EXE
Token: SeCreatePagefilePrivilege	3424	Explorer.EXE
Token: SeShutdownPrivilege	3424	Explorer.EXE
Token: SeCreatePagefilePrivilege	3424	Explorer.EXE
Token: SeShutdownPrivilege	3424	Explorer.EXE
Token: SeCreatePagefilePrivilege	3424	Explorer.EXE
Token: SeShutdownPrivilege	3424	Explorer.EXE
Token: SeCreatePagefilePrivilege	3424	Explorer.EXE

Suspicious use of FindShellTrayWindow 3 IoCs

pid	Process
3424	Explorer.EXE
3424	Explorer.EXE
3424	Explorer.EXE

Suspicious use of SendNotifyMessage 8 IoCs

pid	Process
3424	Explorer.EXE
3424	Explorer.EXE
3424	Explorer.EXE
3424	Explorer.EXE
3424	Explorer.EXE
3424	Explorer.EXE
3424	Explorer.EXE
3424	Explorer.EXE

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 3600 wrote to memory of 1116	3600	IMG_38575943.exe	101
PID 3600 wrote to memory of 1116	3600	IMG_38575943.exe	101
PID 3600 wrote to memory of 1116	3600	IMG_38575943.exe	101
PID 3600 wrote to memory of 1116	3600	IMG_38575943.exe	101
PID 3600 wrote to memory of 1116	3600	IMG_38575943.exe	101
PID 3600 wrote to memory of 1116	3600	IMG_38575943.exe	101
PID 3424 wrote to memory of 1692	3424	Explorer.EXE	103
PID 3424 wrote to memory of 1692	3424	Explorer.EXE	103
PID 3424 wrote to memory of 1692	3424	Explorer.EXE	103
PID 1692 wrote to memory of 4960	1692	chkdsk.exe	105
PID 1692 wrote to memory of 4960	1692	chkdsk.exe	105
PID 1692 wrote to memory of 4960	1692	chkdsk.exe	105

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Modifies registry class
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:3424
- C:\Users\Admin\AppData\Local\Temp\IMG_38575943.exe
  "C:\Users\Admin\AppData\Local\Temp\IMG_38575943.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:3600
- - C:\Users\Admin\AppData\Local\Temp\IMG_38575943.exe
    "C:\Users\Admin\AppData\Local\Temp\IMG_38575943.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:1116
- C:\Windows\SysWOW64\chkdsk.exe
  "C:\Windows\SysWOW64\chkdsk.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Enumerates system info in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1692
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\IMG_38575943.exe"
    3⤵
    PID:4960

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/1116-12-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/1116-18-0x0000000001560000-0x0000000001571000-memory.dmp

Filesize
68KB

Download
memory/1116-17-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/1116-15-0x0000000001680000-0x00000000019CA000-memory.dmp

Filesize
3.3MB

Download
memory/1692-23-0x0000000001080000-0x00000000013CA000-memory.dmp

Filesize
3.3MB

Download
memory/1692-27-0x0000000000EB0000-0x0000000000F40000-memory.dmp

Filesize
576KB

Download
memory/1692-24-0x0000000000830000-0x0000000000859000-memory.dmp

Filesize
164KB

Download
memory/1692-22-0x0000000000830000-0x0000000000859000-memory.dmp

Filesize
164KB

Download
memory/1692-21-0x0000000000D10000-0x0000000000D1A000-memory.dmp

Filesize
40KB

Download
memory/1692-20-0x0000000000D10000-0x0000000000D1A000-memory.dmp

Filesize
40KB

Download
memory/3424-19-0x0000000003010000-0x0000000003144000-memory.dmp

Filesize
1.2MB

Download
memory/3424-33-0x0000000008DB0000-0x0000000008E54000-memory.dmp

Filesize
656KB

Download
memory/3424-30-0x0000000008DB0000-0x0000000008E54000-memory.dmp

Filesize
656KB

Download
memory/3424-29-0x0000000003010000-0x0000000003144000-memory.dmp

Filesize
1.2MB

Download
memory/3424-28-0x0000000008DB0000-0x0000000008E54000-memory.dmp

Filesize
656KB

Download
memory/3600-10-0x0000000006BD0000-0x0000000006C6C000-memory.dmp

Filesize
624KB

Download
memory/3600-2-0x0000000005C40000-0x00000000061E4000-memory.dmp

Filesize
5.6MB

Download
memory/3600-0-0x0000000000C10000-0x0000000000C6C000-memory.dmp

Filesize
368KB

Download
memory/3600-3-0x0000000005690000-0x0000000005722000-memory.dmp

Filesize
584KB

Download
memory/3600-14-0x0000000074840000-0x0000000074FF0000-memory.dmp

Filesize
7.7MB

Download
memory/3600-4-0x0000000005610000-0x0000000005620000-memory.dmp

Filesize
64KB

Download
memory/3600-1-0x0000000074840000-0x0000000074FF0000-memory.dmp

Filesize
7.7MB

Download
memory/3600-11-0x0000000006E60000-0x0000000006EBE000-memory.dmp

Filesize
376KB

Download
memory/3600-5-0x0000000005670000-0x000000000567A000-memory.dmp

Filesize
40KB

Download
memory/3600-9-0x0000000005610000-0x0000000005620000-memory.dmp

Filesize
64KB

Download
memory/3600-8-0x0000000074840000-0x0000000074FF0000-memory.dmp

Filesize
7.7MB

Download
memory/3600-7-0x0000000006D60000-0x0000000006DAC000-memory.dmp

Filesize
304KB

Download
memory/3600-6-0x00000000058D0000-0x00000000058DC000-memory.dmp

Filesize
48KB

Download