xloader | a9010421ea97c10ab6147e6c5077fab296030b13c26b6645502b6165e2e9d4db

General

Target

vbc.exe
Size

694KB
MD5

47fa27443cb1abe987ca9f653754b6d0
SHA1

886a56f419a6e4bc65c603089ee9e9d4f6ad7a54
SHA256

a9010421ea97c10ab6147e6c5077fab296030b13c26b6645502b6165e2e9d4db
SHA512

7dd0b2d5a3716a7ea88f4ca621dc55ec5e3d8a7111e3f373d4631dcdb17c858753e2c55e1723e8c16501ba0d86cc2778cb01bf3ffb791563aa014ef94142e4ac

Score

10^/10

xloader ecuu loader persistence rat suricata

Malware Config

Extracted

Family

xloader

Version

2.3

Campaign

ecuu

C2

http://www.polaritelibrairie.com/ecuu/

Decoy

buoy8boats.com

tomrings.com

o-distribs.com

majesticgroupinc.com

tehridam.com

yzwjtoys.com

castro-online.run

aquarius-twins.com

jamesrrossfineart.com

pavarasupatthonkol.com

rivermarketdentistry.com

gyiblrjd.icu

redcountrypodcast.com

youngbrotherspharmacyga.com

betsysobiech.com

neocleanpro.com

ingpatrimoine.com

mustangsallytransportation.com

jsvfcxzn.com

krsfpjuoekcd.info

Signatures

Xloader
Xloader is a rebranded version of Formbook malware.
loader xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata

Xloader Payload 3 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/536-66-0x0000000000000000-mapping.dmp	xloader
behavioral1/memory/536-75-0x0000000010410000-0x0000000010439000-memory.dmp	xloader
behavioral1/memory/680-82-0x0000000000080000-0x00000000000A9000-memory.dmp	xloader

Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

vbc.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Windows\CurrentVersion\Run\Zpxtgza = "C:\\Users\\Public\\Libraries\\azgtxpZ.url"	vbc.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

logagent.exechkdsk.exe

description	pid	process	target process
PID 536 set thread context of 1352	536	logagent.exe	Explorer.EXE
PID 680 set thread context of 1352	680	chkdsk.exe	Explorer.EXE

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
Modifies registry key 1 TTPs 3 IoCs

Modify Registry
T1112

Processes:

reg.exereg.exereg.exe

pid process

1064 reg.exe
1588 reg.exe
1620 reg.exe

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

pid	process
1064	reg.exe
1588	reg.exe
1620	reg.exe

Suspicious behavior: EnumeratesProcesses 27 IoCs

Processes:

logagent.exechkdsk.exe

pid	process
536	logagent.exe
536	logagent.exe
680	chkdsk.exe
680	chkdsk.exe
680	chkdsk.exe
680	chkdsk.exe
680	chkdsk.exe
680	chkdsk.exe
680	chkdsk.exe
680	chkdsk.exe
680	chkdsk.exe
680	chkdsk.exe
680	chkdsk.exe
680	chkdsk.exe
680	chkdsk.exe
680	chkdsk.exe
680	chkdsk.exe
680	chkdsk.exe
680	chkdsk.exe
680	chkdsk.exe
680	chkdsk.exe
680	chkdsk.exe
680	chkdsk.exe
680	chkdsk.exe
680	chkdsk.exe
680	chkdsk.exe
680	chkdsk.exe

Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

logagent.exechkdsk.exe

pid process

536 logagent.exe
536 logagent.exe
536 logagent.exe
680 chkdsk.exe
680 chkdsk.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

logagent.exechkdsk.exe

description pid process

Token: SeDebugPrivilege 536 logagent.exe
Token: SeDebugPrivilege 680 chkdsk.exe
Suspicious use of FindShellTrayWindow 4 IoCs

Processes:

Explorer.EXE

pid process

1352 Explorer.EXE
1352 Explorer.EXE
1352 Explorer.EXE
1352 Explorer.EXE
Suspicious use of SendNotifyMessage 4 IoCs

Processes:

Explorer.EXE

pid process

1352 Explorer.EXE
1352 Explorer.EXE
1352 Explorer.EXE
1352 Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	536	logagent.exe
Token: SeDebugPrivilege	680	chkdsk.exe

pid	process
1352	Explorer.EXE
1352	Explorer.EXE
1352	Explorer.EXE
1352	Explorer.EXE

pid	process
1352	Explorer.EXE
1352	Explorer.EXE
1352	Explorer.EXE
1352	Explorer.EXE

Suspicious use of WriteProcessMemory 43 IoCs

Processes:

vbc.execmd.execmd.exeExplorer.EXEchkdsk.execmd.exe

description	pid	process	target process
PID 1088 wrote to memory of 536	1088	vbc.exe	logagent.exe
PID 1088 wrote to memory of 536	1088	vbc.exe	logagent.exe
PID 1088 wrote to memory of 536	1088	vbc.exe	logagent.exe
PID 1088 wrote to memory of 536	1088	vbc.exe	logagent.exe
PID 1088 wrote to memory of 536	1088	vbc.exe	logagent.exe
PID 1088 wrote to memory of 536	1088	vbc.exe	logagent.exe
PID 1088 wrote to memory of 536	1088	vbc.exe	logagent.exe
PID 1088 wrote to memory of 1020	1088	vbc.exe	cmd.exe
PID 1088 wrote to memory of 1020	1088	vbc.exe	cmd.exe
PID 1088 wrote to memory of 1020	1088	vbc.exe	cmd.exe
PID 1088 wrote to memory of 1020	1088	vbc.exe	cmd.exe
PID 1020 wrote to memory of 860	1020	cmd.exe	cmd.exe
PID 1020 wrote to memory of 860	1020	cmd.exe	cmd.exe
PID 1020 wrote to memory of 860	1020	cmd.exe	cmd.exe
PID 1020 wrote to memory of 860	1020	cmd.exe	cmd.exe
PID 860 wrote to memory of 1620	860	cmd.exe	reg.exe
PID 860 wrote to memory of 1620	860	cmd.exe	reg.exe
PID 860 wrote to memory of 1620	860	cmd.exe	reg.exe
PID 860 wrote to memory of 1620	860	cmd.exe	reg.exe
PID 860 wrote to memory of 1064	860	cmd.exe	reg.exe
PID 860 wrote to memory of 1064	860	cmd.exe	reg.exe
PID 860 wrote to memory of 1064	860	cmd.exe	reg.exe
PID 860 wrote to memory of 1064	860	cmd.exe	reg.exe
PID 860 wrote to memory of 756	860	cmd.exe	schtasks.exe
PID 860 wrote to memory of 756	860	cmd.exe	schtasks.exe
PID 860 wrote to memory of 756	860	cmd.exe	schtasks.exe
PID 860 wrote to memory of 756	860	cmd.exe	schtasks.exe
PID 1352 wrote to memory of 680	1352	Explorer.EXE	chkdsk.exe
PID 1352 wrote to memory of 680	1352	Explorer.EXE	chkdsk.exe
PID 1352 wrote to memory of 680	1352	Explorer.EXE	chkdsk.exe
PID 1352 wrote to memory of 680	1352	Explorer.EXE	chkdsk.exe
PID 680 wrote to memory of 836	680	chkdsk.exe	cmd.exe
PID 680 wrote to memory of 836	680	chkdsk.exe	cmd.exe
PID 680 wrote to memory of 836	680	chkdsk.exe	cmd.exe
PID 680 wrote to memory of 836	680	chkdsk.exe	cmd.exe
PID 1088 wrote to memory of 1980	1088	vbc.exe	cmd.exe
PID 1088 wrote to memory of 1980	1088	vbc.exe	cmd.exe
PID 1088 wrote to memory of 1980	1088	vbc.exe	cmd.exe
PID 1088 wrote to memory of 1980	1088	vbc.exe	cmd.exe
PID 1980 wrote to memory of 1588	1980	cmd.exe	reg.exe
PID 1980 wrote to memory of 1588	1980	cmd.exe	reg.exe
PID 1980 wrote to memory of 1588	1980	cmd.exe	reg.exe
PID 1980 wrote to memory of 1588	1980	cmd.exe	reg.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1352

C:\Users\Admin\AppData\Local\Temp\vbc.exe
"C:\Users\Admin\AppData\Local\Temp\vbc.exe"
2⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1088

C:\Windows\SysWOW64\logagent.exe
C:\Windows\System32\logagent.exe
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:536

C:\Windows\SysWOW64\cmd.exe
cmd /c ""C:\Users\Public\Trast.bat" "
3⤵
- Suspicious use of WriteProcessMemory
PID:1020

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /K C:\Users\Public\UKO.bat
4⤵
- Suspicious use of WriteProcessMemory
PID:860

C:\Windows\SysWOW64\reg.exe
reg delete hkcu\Environment /v windir /f
5⤵
- Modifies registry key
PID:1620

C:\Windows\SysWOW64\reg.exe
reg add hkcu\Environment /v windir /d "cmd /c start /min C:\Users\Public\KDECO.bat reg delete hkcu\Environment /v windir /f && REM "
5⤵
- Modifies registry key
PID:1064

C:\Windows\SysWOW64\schtasks.exe
schtasks /Run /TN \Microsoft\Windows\DiskCleanup\SilentCleanup /I
5⤵
PID:756

C:\Windows\SysWOW64\cmd.exe
cmd /c ""C:\Users\Public\nest.bat" "
3⤵
- Suspicious use of WriteProcessMemory
PID:1980

C:\Windows\SysWOW64\reg.exe
reg delete hkcu\Environment /v windir /f
4⤵
- Modifies registry key
PID:1588

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:680

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Windows\SysWOW64\logagent.exe"
3⤵
PID:836

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scripting

1

T1064

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Scripting

1

T1064

Modify Registry

2

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Public\Trast.bat
MD5
4068c9f69fcd8a171c67f81d4a952a54

SHA1
4d2536a8c28cdcc17465e20d6693fb9e8e713b36

SHA256
24222300c78180b50ed1f8361ba63cb27316ec994c1c9079708a51b4a1a9d810

SHA512
a64f9319acc51fffd0491c74dcd9c9084c2783b82f95727e4bfe387a8528c6dcf68f11418e88f1e133d115daf907549c86dd7ad866b2a7938add5225fbb2811d

Download Submit
C:\Users\Public\UKO.bat
MD5
eaf8d967454c3bbddbf2e05a421411f8

SHA1
6170880409b24de75c2dc3d56a506fbff7f6622c

SHA256
f35f2658455a2e40f151549a7d6465a836c33fa9109e67623916f889849eac56

SHA512
fe5be5c673e99f70c93019d01abb0a29dd2ecf25b2d895190ff551f020c28e7d8f99f65007f440f0f76c5bcac343b2a179a94d190c938ea3b9e1197890a412e9

Download Submit
C:\Users\Public\nest.bat
MD5
8ada51400b7915de2124baaf75e3414c

SHA1
1a7b9db12184ab7fd7fce1c383f9670a00adb081

SHA256
45aa3957c29865260a78f03eef18ae9aebdbf7bea751ecc88be4a799f2bb46c7

SHA512
9afc138157a4565294ca49942579cdb6f5d8084e56f9354738de62b585f4c0fa3e7f2cbc9541827f2084e3ff36c46eed29b46f5dd2444062ffcd05c599992e68

Download Submit
memory/536-75-0x0000000010410000-0x0000000010439000-memory.dmp

Filesize
164KB

Download
memory/536-77-0x0000000000120000-0x0000000000130000-memory.dmp

Filesize
64KB

Download
memory/536-66-0x0000000000000000-mapping.dmp

Download
memory/536-76-0x0000000002230000-0x0000000002533000-memory.dmp

Filesize
3.0MB

Download
memory/536-74-0x0000000000090000-0x0000000000091000-memory.dmp

Filesize
4KB

Download
memory/680-82-0x0000000000080000-0x00000000000A9000-memory.dmp

Filesize
164KB

Download
memory/680-79-0x0000000000000000-mapping.dmp

Download
memory/680-84-0x0000000000A30000-0x0000000000ABF000-memory.dmp

Filesize
572KB

Download
memory/680-83-0x0000000002070000-0x0000000002373000-memory.dmp

Filesize
3.0MB

Download
memory/680-81-0x0000000000C60000-0x0000000000C67000-memory.dmp

Filesize
28KB

Download
memory/756-73-0x0000000000000000-mapping.dmp

Download
memory/836-80-0x0000000000000000-mapping.dmp

Download
memory/860-69-0x0000000000000000-mapping.dmp

Download
memory/1020-67-0x0000000000000000-mapping.dmp

Download
memory/1064-72-0x0000000000000000-mapping.dmp

Download
memory/1088-63-0x00000000002C0000-0x00000000002DB000-memory.dmp

Filesize
108KB

Download
memory/1088-60-0x0000000075DA1000-0x0000000075DA3000-memory.dmp

Filesize
8KB

Download
memory/1088-61-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download
memory/1352-78-0x0000000006B40000-0x0000000006CA2000-memory.dmp

Filesize
1.4MB

Download
memory/1352-85-0x0000000006CB0000-0x0000000006E0C000-memory.dmp

Filesize
1.4MB

Download
memory/1588-88-0x0000000000000000-mapping.dmp

Download
memory/1620-71-0x0000000000000000-mapping.dmp

Download
memory/1980-86-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads