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
behavioral2/memory/3632-119-0x0000000000000000-mapping.dmp	xloader
behavioral2/memory/3632-128-0x0000000010410000-0x0000000010439000-memory.dmp	xloader
behavioral2/memory/3972-134-0x0000000002DB0000-0x0000000002DD9000-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-1-5-21-3686645723-710336880-414668232-1000\Software\Microsoft\Windows\CurrentVersion\Run\Zpxtgza = "C:\\Users\\Public\\Libraries\\azgtxpZ.url"	vbc.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

dialer.exerundll32.exe

description	pid	process	target process
PID 3632 set thread context of 1700	3632	dialer.exe	Explorer.EXE
PID 3972 set thread context of 1700	3972	rundll32.exe	Explorer.EXE

Modifies registry key 1 TTPs 3 IoCs

Modify Registry
T1112

Processes:

reg.exereg.exereg.exe

pid process

4040 reg.exe
3084 reg.exe
2700 reg.exe

pid	process
4040	reg.exe
3084	reg.exe
2700	reg.exe

Suspicious behavior: EnumeratesProcesses 56 IoCs

Processes:

dialer.exerundll32.exe

pid	process
3632	dialer.exe
3632	dialer.exe
3632	dialer.exe
3632	dialer.exe
3972	rundll32.exe
3972	rundll32.exe
3972	rundll32.exe
3972	rundll32.exe
3972	rundll32.exe
3972	rundll32.exe
3972	rundll32.exe
3972	rundll32.exe
3972	rundll32.exe
3972	rundll32.exe
3972	rundll32.exe
3972	rundll32.exe
3972	rundll32.exe
3972	rundll32.exe
3972	rundll32.exe
3972	rundll32.exe
3972	rundll32.exe
3972	rundll32.exe
3972	rundll32.exe
3972	rundll32.exe
3972	rundll32.exe
3972	rundll32.exe
3972	rundll32.exe
3972	rundll32.exe
3972	rundll32.exe
3972	rundll32.exe
3972	rundll32.exe
3972	rundll32.exe
3972	rundll32.exe
3972	rundll32.exe
3972	rundll32.exe
3972	rundll32.exe
3972	rundll32.exe
3972	rundll32.exe
3972	rundll32.exe
3972	rundll32.exe
3972	rundll32.exe
3972	rundll32.exe
3972	rundll32.exe
3972	rundll32.exe
3972	rundll32.exe
3972	rundll32.exe
3972	rundll32.exe
3972	rundll32.exe
3972	rundll32.exe
3972	rundll32.exe
3972	rundll32.exe
3972	rundll32.exe
3972	rundll32.exe
3972	rundll32.exe
3972	rundll32.exe
3972	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

1700 Explorer.EXE
Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

dialer.exerundll32.exe

pid process

3632 dialer.exe
3632 dialer.exe
3632 dialer.exe
3972 rundll32.exe
3972 rundll32.exe

pid	process
1700	Explorer.EXE

Suspicious use of AdjustPrivilegeToken 8 IoCs

Processes:

dialer.exerundll32.exeExplorer.EXE

description	pid	process
Token: SeDebugPrivilege	3632	dialer.exe
Token: SeDebugPrivilege	3972	rundll32.exe
Token: SeShutdownPrivilege	1700	Explorer.EXE
Token: SeCreatePagefilePrivilege	1700	Explorer.EXE
Token: SeShutdownPrivilege	1700	Explorer.EXE
Token: SeCreatePagefilePrivilege	1700	Explorer.EXE
Token: SeShutdownPrivilege	1700	Explorer.EXE
Token: SeCreatePagefilePrivilege	1700	Explorer.EXE

Suspicious use of UnmapMainImage 1 IoCs

Processes:

Explorer.EXE

pid process

1700 Explorer.EXE

pid	process
1700	Explorer.EXE

Suspicious use of WriteProcessMemory 33 IoCs

Processes:

vbc.execmd.execmd.exeExplorer.EXErundll32.execmd.exe

description	pid	process	target process
PID 4092 wrote to memory of 3632	4092	vbc.exe	dialer.exe
PID 4092 wrote to memory of 3632	4092	vbc.exe	dialer.exe
PID 4092 wrote to memory of 3632	4092	vbc.exe	dialer.exe
PID 4092 wrote to memory of 3632	4092	vbc.exe	dialer.exe
PID 4092 wrote to memory of 3632	4092	vbc.exe	dialer.exe
PID 4092 wrote to memory of 3632	4092	vbc.exe	dialer.exe
PID 4092 wrote to memory of 2108	4092	vbc.exe	cmd.exe
PID 4092 wrote to memory of 2108	4092	vbc.exe	cmd.exe
PID 4092 wrote to memory of 2108	4092	vbc.exe	cmd.exe
PID 2108 wrote to memory of 1348	2108	cmd.exe	cmd.exe
PID 2108 wrote to memory of 1348	2108	cmd.exe	cmd.exe
PID 2108 wrote to memory of 1348	2108	cmd.exe	cmd.exe
PID 1348 wrote to memory of 4040	1348	cmd.exe	reg.exe
PID 1348 wrote to memory of 4040	1348	cmd.exe	reg.exe
PID 1348 wrote to memory of 4040	1348	cmd.exe	reg.exe
PID 1348 wrote to memory of 3084	1348	cmd.exe	reg.exe
PID 1348 wrote to memory of 3084	1348	cmd.exe	reg.exe
PID 1348 wrote to memory of 3084	1348	cmd.exe	reg.exe
PID 1348 wrote to memory of 2420	1348	cmd.exe	schtasks.exe
PID 1348 wrote to memory of 2420	1348	cmd.exe	schtasks.exe
PID 1348 wrote to memory of 2420	1348	cmd.exe	schtasks.exe
PID 1700 wrote to memory of 3972	1700	Explorer.EXE	rundll32.exe
PID 1700 wrote to memory of 3972	1700	Explorer.EXE	rundll32.exe
PID 1700 wrote to memory of 3972	1700	Explorer.EXE	rundll32.exe
PID 3972 wrote to memory of 2736	3972	rundll32.exe	cmd.exe
PID 3972 wrote to memory of 2736	3972	rundll32.exe	cmd.exe
PID 3972 wrote to memory of 2736	3972	rundll32.exe	cmd.exe
PID 4092 wrote to memory of 2856	4092	vbc.exe	cmd.exe
PID 4092 wrote to memory of 2856	4092	vbc.exe	cmd.exe
PID 4092 wrote to memory of 2856	4092	vbc.exe	cmd.exe
PID 2856 wrote to memory of 2700	2856	cmd.exe	reg.exe
PID 2856 wrote to memory of 2700	2856	cmd.exe	reg.exe
PID 2856 wrote to memory of 2700	2856	cmd.exe	reg.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1700

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:4092

C:\Windows\SysWOW64\dialer.exe
C:\Windows\System32\dialer.exe
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:3632

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Public\Trast.bat" "
3⤵
- Suspicious use of WriteProcessMemory
PID:2108

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /K C:\Users\Public\UKO.bat
4⤵
- Suspicious use of WriteProcessMemory
PID:1348

C:\Windows\SysWOW64\reg.exe
reg delete hkcu\Environment /v windir /f
5⤵
- Modifies registry key
PID:4040

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:3084

C:\Windows\SysWOW64\schtasks.exe
schtasks /Run /TN \Microsoft\Windows\DiskCleanup\SilentCleanup /I
5⤵
PID:2420

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Public\nest.bat" "
3⤵
- Suspicious use of WriteProcessMemory
PID:2856

C:\Windows\SysWOW64\reg.exe
reg delete hkcu\Environment /v windir /f
4⤵
- Modifies registry key
PID:2700

C:\Windows\SysWOW64\rundll32.exe
"C:\Windows\SysWOW64\rundll32.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3972

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Windows\SysWOW64\dialer.exe"
3⤵
PID:2736

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

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/1348-122-0x0000000000000000-mapping.dmp

Download
memory/1700-141-0x0000000006300000-0x0000000006398000-memory.dmp

Filesize
608KB

Download
memory/1700-131-0x0000000006230000-0x00000000062F2000-memory.dmp

Filesize
776KB

Download
memory/2108-120-0x0000000000000000-mapping.dmp

Download
memory/2420-126-0x0000000000000000-mapping.dmp

Download
memory/2700-139-0x0000000000000000-mapping.dmp

Download
memory/2736-136-0x0000000000000000-mapping.dmp

Download
memory/2856-137-0x0000000000000000-mapping.dmp

Download
memory/3084-125-0x0000000000000000-mapping.dmp

Download
memory/3632-127-0x0000000000960000-0x0000000000961000-memory.dmp

Filesize
4KB

Download
memory/3632-130-0x0000000000E30000-0x0000000000E40000-memory.dmp

Filesize
64KB

Download
memory/3632-129-0x0000000004AF0000-0x0000000004E10000-memory.dmp

Filesize
3.1MB

Download
memory/3632-119-0x0000000000000000-mapping.dmp

Download
memory/3632-128-0x0000000010410000-0x0000000010439000-memory.dmp

Filesize
164KB

Download
memory/3972-134-0x0000000002DB0000-0x0000000002DD9000-memory.dmp

Filesize
164KB

Download
memory/3972-135-0x0000000004D60000-0x0000000005080000-memory.dmp

Filesize
3.1MB

Download
memory/3972-133-0x0000000000B90000-0x0000000000BA3000-memory.dmp

Filesize
76KB

Download
memory/3972-132-0x0000000000000000-mapping.dmp

Download
memory/3972-140-0x0000000004BC0000-0x0000000004C4F000-memory.dmp

Filesize
572KB

Download
memory/4040-124-0x0000000000000000-mapping.dmp

Download
memory/4092-114-0x0000000000610000-0x0000000000611000-memory.dmp

Filesize
4KB

Download
memory/4092-116-0x0000000000630000-0x000000000064B000-memory.dmp

Filesize
108KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads