xloader | b5d3ff4b7af5cdc828b2c6d23177a5c85e7aea720b01be458ed979ce16a48d02

General

Target

CTMARRANGEMENT.exe
Size

241KB
MD5

b2f8226c665cc2d96fce6e8e1dff44bb
SHA1

e4e99b9b85d1c957e684054cc44c4d4ab6816398
SHA256

b5d3ff4b7af5cdc828b2c6d23177a5c85e7aea720b01be458ed979ce16a48d02
SHA512

6ddd7dbb1359dff4461cf967cee483ecd5fc547a6b8ee7e3720d4eba53898ff57fcd8ad6630d334fe424dd430a5a8c68a7f09b8b3a0e46e40defceb8f95050a8

Score

10^/10

xloader u6vb loader rat

Malware Config

Extracted

Family

xloader

Version

2.5

Campaign

u6vb

Decoy

blendedmatter.com

piquinmarketing.com

dubkirelax.online

optimumotoaksesuar.com

bendisle.com

islamicgeometricpatterns.net

cheesebox.online

lh-coaching.com

buildingmaterial.info

backwoods72.com

goodtreetee.com

zknqqpvsypx.mobi

phukienstreaming.com

turkistick.com

cbd-shop-portugal.com

imherllc.com

krallechols.quest

ttmmb.com

pornmodelsworld.com

weakyummy.space

Signatures

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

Xloader Payload 2 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/1780-131-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral2/memory/460-140-0x0000000004B90000-0x0000000004BB9000-memory.dmp	xloader

Loads dropped DLL 1 IoCs

Processes:

CTMARRANGEMENT.exe

pid process

4088 CTMARRANGEMENT.exe

pid	process
4088	CTMARRANGEMENT.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

CTMARRANGEMENT.exeCTMARRANGEMENT.exe

description	pid	process	target process
PID 4088 set thread context of 1780	4088	CTMARRANGEMENT.exe	CTMARRANGEMENT.exe
PID 1780 set thread context of 2308	1780	CTMARRANGEMENT.exe	Explorer.EXE

Drops file in Windows directory 1 IoCs

Processes:

svchost.exe

description	ioc	process
File opened for modification	C:\Windows\ServiceProfiles\NetworkService\AppData\Local\Microsoft\Windows\DeliveryOptimization\State\keyValueLKG.dat	svchost.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry
T1012

System Information Discovery
T1082

Processes:

chkdsk.exe

description ioc process

Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier chkdsk.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	chkdsk.exe

Modifies data under HKEY_USERS 49 IoCs

Processes:

svchost.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyRateBkCnt = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\LANConnectionCount = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\MonthlyUploadRestriction = "0"	svchost.exe
Key created	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Config	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\UploadMonthlyInternetBytes = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Config\KVFileExpirationTime = "132899105287944470"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\SwarmCount = "1"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\InternetConnectionCount = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\UploadCount = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\PriorityDownloadPendingCount = "0"	svchost.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\CPUpct = "0.154400"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Config\DODownloadMode = "1"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\BkDownloadRatePct = "45"	svchost.exe
Key created	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyInternetBytes = "0"	svchost.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Config\Geo_EndpointFullUri = "https://geo.prod.do.dsp.mp.microsoft.com/geo"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\CacheSizeBytes = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownlinkBps = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownlinkUsageBps = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\NormalDownloadPendingCount = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyLanBytes = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyCdnBytes = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyRateBkBps = "0"	svchost.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Config\GeoVersion_EndpointFullUri = "https://geover.prod.do.dsp.mp.microsoft.com/geoversion"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\PeerInfoCount = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\LinkLocalConnectionCount = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\GroupConnectionCount = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\UplinkUsageBps = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\NormalDownloadCount = "0"	svchost.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\CPUpct = "0.033715"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\SwarmCount = "0"	svchost.exe
Key created	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Settings	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyLinkLocalBytes = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyCacheHostBytes = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\MonthID = "2"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\CDNConnectionCount = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\UplinkBps = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\PriorityDownloadCount = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\MemoryUsageKB = "4112"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\MemoryUsageKB = "4228"	svchost.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\CPUpct = "5.006989"	svchost.exe
Key created	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyGroupBytes = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyRateFrBps = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyRateFrCnt = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\UploadRatePct = "100"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Config\DownloadMode_BackCompat = "1"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\UploadMonthlyLanBytes = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\FrDownloadRatePct = "90"	svchost.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

Processes:

CTMARRANGEMENT.exechkdsk.exe

pid	process
1780	CTMARRANGEMENT.exe
1780	CTMARRANGEMENT.exe
1780	CTMARRANGEMENT.exe
1780	CTMARRANGEMENT.exe
460	chkdsk.exe
460	chkdsk.exe
460	chkdsk.exe
460	chkdsk.exe

Suspicious behavior: MapViewOfSection 4 IoCs

Processes:

CTMARRANGEMENT.exechkdsk.exe

pid process

1780 CTMARRANGEMENT.exe
1780 CTMARRANGEMENT.exe
1780 CTMARRANGEMENT.exe
460 chkdsk.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

CTMARRANGEMENT.exechkdsk.exe

description pid process

Token: SeDebugPrivilege 1780 CTMARRANGEMENT.exe
Token: SeDebugPrivilege 460 chkdsk.exe

description	pid	process
Token: SeDebugPrivilege	1780	CTMARRANGEMENT.exe
Token: SeDebugPrivilege	460	chkdsk.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

CTMARRANGEMENT.exeExplorer.EXEchkdsk.exe

description	pid	process	target process
PID 4088 wrote to memory of 1780	4088	CTMARRANGEMENT.exe	CTMARRANGEMENT.exe
PID 4088 wrote to memory of 1780	4088	CTMARRANGEMENT.exe	CTMARRANGEMENT.exe
PID 4088 wrote to memory of 1780	4088	CTMARRANGEMENT.exe	CTMARRANGEMENT.exe
PID 4088 wrote to memory of 1780	4088	CTMARRANGEMENT.exe	CTMARRANGEMENT.exe
PID 4088 wrote to memory of 1780	4088	CTMARRANGEMENT.exe	CTMARRANGEMENT.exe
PID 4088 wrote to memory of 1780	4088	CTMARRANGEMENT.exe	CTMARRANGEMENT.exe
PID 2308 wrote to memory of 460	2308	Explorer.EXE	chkdsk.exe
PID 2308 wrote to memory of 460	2308	Explorer.EXE	chkdsk.exe
PID 2308 wrote to memory of 460	2308	Explorer.EXE	chkdsk.exe
PID 460 wrote to memory of 2452	460	chkdsk.exe	cmd.exe
PID 460 wrote to memory of 2452	460	chkdsk.exe	cmd.exe
PID 460 wrote to memory of 2452	460	chkdsk.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:2308

C:\Users\Admin\AppData\Local\Temp\CTMARRANGEMENT.exe
"C:\Users\Admin\AppData\Local\Temp\CTMARRANGEMENT.exe"
2⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4088

C:\Users\Admin\AppData\Local\Temp\CTMARRANGEMENT.exe
"C:\Users\Admin\AppData\Local\Temp\CTMARRANGEMENT.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1780

C:\Windows\SysWOW64\chkdsk.exe
"C:\Windows\SysWOW64\chkdsk.exe"
2⤵
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:460

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\CTMARRANGEMENT.exe"
3⤵
PID:2452

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k NetworkService -p
1⤵
- Drops file in Windows directory
- Modifies data under HKEY_USERS
PID:2872

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

2

T1082

Query Registry

1

T1012

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\nsjCE9B.tmp\motkbxlalna.dll
MD5
8ef2346d93874e3817a0884d963244bf

SHA1
65ee37be6eef3f9b1be9011a5a6b502147270833

SHA256
603e899639d21b1bf894843ceec38af6aa307f67564e2bffaf94891a0c0c27b9

SHA512
9efbe25b97117e5b38a905fc38e9503b93cb5e62db9599a0c257242a5d64d38165842fce7ba4d85dba54a18468ef1cfcaa0cfb8776bcc3c0694b7914a6bf1dae

Download Submit
memory/460-139-0x0000000005660000-0x00000000059AA000-memory.dmp

Filesize
3.3MB

Download
memory/460-138-0x0000000000600000-0x000000000060A000-memory.dmp

Filesize
40KB

Download
memory/460-140-0x0000000004B90000-0x0000000004BB9000-memory.dmp

Filesize
164KB

Download
memory/1780-131-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/1780-135-0x000000000041D000-0x000000000041E000-memory.dmp

Filesize
4KB

Download
memory/1780-134-0x0000000000AF0000-0x0000000000E3A000-memory.dmp

Filesize
3.3MB

Download
memory/1780-136-0x00000000005E0000-0x00000000005F1000-memory.dmp

Filesize
68KB

Download
memory/2308-137-0x0000000008FF0000-0x000000000910C000-memory.dmp

Filesize
1.1MB

Download
memory/4088-132-0x00000000009D0000-0x00000000009D2000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads