xloader | 7a491e944745baf8c784f24a8c6434aa1ed068e26bfa17d06f902419d7207f14

General

Target

RFQ101#2021.exe
Size

509KB
MD5

71fea8895516246e023034fed8e7e66b
SHA1

dc3278cfcb258ff315e4e7a1267f52bdf562d450
SHA256

998d8ff737921cf6d3bbbc7294125f872e40f7580e3ea9c81188d794786d8749
SHA512

381d79fee03af6b156b995ae58fbdc8267f6c9de473d93a90297d15d299e75d75089324de814809d32be6db1e502a828d1184eaef19afeec4573312756d35e41
SSDEEP

12288:a9cruSK3CcG8cg9oJfkDIUTtPFtA/yNGUf6E:aWKSK3W8cg6Jf+IUpPDA6IZ

Score

10^/10

xloader c0vz discovery loader rat

Malware Config

Extracted

Family

xloader

Version

2.5

Campaign

c0vz

Decoy

barmorelosmx.com

wearablegraphene.com

lopsrental.lease

259771.com

wizer.digital

at7eleven.ink

szshuojing.com

coffsmobilebarber.com

swift-goods.com

hashstox.com

my-safqati.com

herba-soul.com

tethysbooks.com

learnwebrtc.com

tzwco.com

buzzingyhvlgr.online

aryocoding.com

yourdaruma.com

choice-recordtoreadtoday.info

trand-chicks.art

Signatures

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

Xloader payload 4 IoCs

rat

resource	yara_rule
behavioral2/memory/2996-5-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral2/memory/2996-10-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral2/memory/2996-14-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral2/memory/3512-20-0x0000000000780000-0x00000000007A9000-memory.dmp	xloader

Blocklisted process makes network request 1 IoCs

flow	pid	Process
47	3512	cmstp.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 4588 set thread context of 2996	4588	RFQ101#2021.exe	91
PID 2996 set thread context of 3568	2996	RFQ101#2021.exe	56
PID 2996 set thread context of 3568	2996	RFQ101#2021.exe	56
PID 3512 set thread context of 3568	3512	cmstp.exe	56

System Location Discovery: System Language Discovery 1 TTPs 3 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	cmstp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RFQ101#2021.exe

Suspicious behavior: EnumeratesProcesses 48 IoCs

pid	Process
2996	RFQ101#2021.exe
2996	RFQ101#2021.exe
2996	RFQ101#2021.exe
2996	RFQ101#2021.exe
2996	RFQ101#2021.exe
2996	RFQ101#2021.exe
3512	cmstp.exe
3512	cmstp.exe
3512	cmstp.exe
3512	cmstp.exe
3512	cmstp.exe
3512	cmstp.exe
3512	cmstp.exe
3512	cmstp.exe
3512	cmstp.exe
3512	cmstp.exe
3512	cmstp.exe
3512	cmstp.exe
3512	cmstp.exe
3512	cmstp.exe
3512	cmstp.exe
3512	cmstp.exe
3512	cmstp.exe
3512	cmstp.exe
3512	cmstp.exe
3512	cmstp.exe
3512	cmstp.exe
3512	cmstp.exe
3512	cmstp.exe
3512	cmstp.exe
3512	cmstp.exe
3512	cmstp.exe
3512	cmstp.exe
3512	cmstp.exe
3512	cmstp.exe
3512	cmstp.exe
3512	cmstp.exe
3512	cmstp.exe
3512	cmstp.exe
3512	cmstp.exe
3512	cmstp.exe
3512	cmstp.exe
3512	cmstp.exe
3512	cmstp.exe
3512	cmstp.exe
3512	cmstp.exe
3512	cmstp.exe
3512	cmstp.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
2996	RFQ101#2021.exe
2996	RFQ101#2021.exe
2996	RFQ101#2021.exe
2996	RFQ101#2021.exe
3512	cmstp.exe
3512	cmstp.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2996	RFQ101#2021.exe
Token: SeDebugPrivilege	3512	cmstp.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4588 wrote to memory of 2996	4588	RFQ101#2021.exe	91
PID 4588 wrote to memory of 2996	4588	RFQ101#2021.exe	91
PID 4588 wrote to memory of 2996	4588	RFQ101#2021.exe	91
PID 4588 wrote to memory of 2996	4588	RFQ101#2021.exe	91
PID 4588 wrote to memory of 2996	4588	RFQ101#2021.exe	91
PID 4588 wrote to memory of 2996	4588	RFQ101#2021.exe	91
PID 3568 wrote to memory of 3512	3568	Explorer.EXE	92
PID 3568 wrote to memory of 3512	3568	Explorer.EXE	92
PID 3568 wrote to memory of 3512	3568	Explorer.EXE	92
PID 3512 wrote to memory of 3384	3512	cmstp.exe	93
PID 3512 wrote to memory of 3384	3512	cmstp.exe	93
PID 3512 wrote to memory of 3384	3512	cmstp.exe	93

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:3568
- C:\Users\Admin\AppData\Local\Temp\RFQ101#2021.exe
  "C:\Users\Admin\AppData\Local\Temp\RFQ101#2021.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4588
- - C:\Users\Admin\AppData\Local\Temp\RFQ101#2021.exe
    "C:\Users\Admin\AppData\Local\Temp\RFQ101#2021.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2996
- C:\Windows\SysWOW64\cmstp.exe
  "C:\Windows\SysWOW64\cmstp.exe"
  2⤵
  - Blocklisted process makes network request
  - 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:3512
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\RFQ101#2021.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3384

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/2996-8-0x0000000001580000-0x00000000018CA000-memory.dmp

Filesize
3.3MB

Download
memory/2996-14-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/2996-15-0x00000000010E0000-0x00000000010F1000-memory.dmp

Filesize
68KB

Download
memory/2996-10-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/2996-11-0x0000000001080000-0x0000000001091000-memory.dmp

Filesize
68KB

Download
memory/2996-5-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/3512-19-0x0000000000490000-0x00000000004A6000-memory.dmp

Filesize
88KB

Download
memory/3512-18-0x0000000000490000-0x00000000004A6000-memory.dmp

Filesize
88KB

Download
memory/3512-20-0x0000000000780000-0x00000000007A9000-memory.dmp

Filesize
164KB

Download
memory/3568-12-0x00000000084B0000-0x00000000085F6000-memory.dmp

Filesize
1.3MB

Download
memory/3568-16-0x0000000007530000-0x0000000007645000-memory.dmp

Filesize
1.1MB

Download
memory/3568-17-0x00000000084B0000-0x00000000085F6000-memory.dmp

Filesize
1.3MB

Download
memory/3568-21-0x0000000007530000-0x0000000007645000-memory.dmp

Filesize
1.1MB

Download
memory/3568-24-0x0000000008A70000-0x0000000008BF4000-memory.dmp

Filesize
1.5MB

Download
memory/3568-26-0x0000000008A70000-0x0000000008BF4000-memory.dmp

Filesize
1.5MB

Download
memory/4588-7-0x0000000074930000-0x0000000074EE1000-memory.dmp

Filesize
5.7MB

Download
memory/4588-2-0x0000000074930000-0x0000000074EE1000-memory.dmp

Filesize
5.7MB

Download
memory/4588-1-0x0000000074930000-0x0000000074EE1000-memory.dmp

Filesize
5.7MB

Download
memory/4588-0-0x0000000074932000-0x0000000074933000-memory.dmp

Filesize
4KB

Download
memory/4588-3-0x0000000074932000-0x0000000074933000-memory.dmp

Filesize
4KB

Download
memory/4588-4-0x0000000074930000-0x0000000074EE1000-memory.dmp

Filesize
5.7MB

Download

Analysis

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