xloader | 930a5b287917b943e46e998d8acc1714217e41f0d04af5b55443c467882f288d

General

Target

grace $.exe
Size

482KB
MD5

beee308b51db0c02f8eeebf7d2773a6d
SHA1

4df5d609ea5b05dfcba4b9e51120a10374f7d450
SHA256

7af335cb2a2646ddadf12f730585a217523da868aaeb12ba621b367c1b942693
SHA512

d0665aa70d1c1116a36c296bc49ec4b474a086d9741d3439f8b0fe4c8f054ae8ab1d5610b4e4e74758c25947054a569e5b897822e2859c8595b00dc69015a63b

Score

10^/10

xloader t75f loader persistence rat suricata

Malware Config

Extracted

Family

xloader

Version

2.3

Campaign

t75f

C2

http://www.vertexnailsblaine.com/t75f/

Decoy

onegolfsydney.com

kaizensportscoaching.com

mliacbjv.icu

rinstech.net

midas-parts.com

istmenian.com

ibrahimpike.com

herbspaces.com

gentleman4higher.com

workabusiness.com

isabusive.website

222555dy.com

lwhyzhzb.xyz

gabrielabravoillanes.com

hearthomelife.com

buildswealth.com

printitaz.com

l-mventures.com

baincot3.com

nstaq-labs.com

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
suricata: ET MALWARE FormBook CnC Checkin (POST) M2
suricata: ET MALWARE FormBook CnC Checkin (POST) M2
suricata

Xloader Payload 3 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/3240-124-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral2/memory/3240-125-0x000000000041D110-mapping.dmp	xloader
behavioral2/memory/1928-132-0x0000000000760000-0x0000000000789000-memory.dmp	xloader

Adds policy Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

chkdsk.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	chkdsk.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\XRMH7BMXCNY = "C:\\Program Files (x86)\\Bf8fdu\\bj1pqbmxwfkdhxtx.exe"	chkdsk.exe

Executes dropped EXE 1 IoCs

Processes:

bj1pqbmxwfkdhxtx.exe

pid process

1680 bj1pqbmxwfkdhxtx.exe

pid	process
1680	bj1pqbmxwfkdhxtx.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

grace $.exeRegSvcs.exechkdsk.exe

description	pid	process	target process
PID 640 set thread context of 3240	640	grace $.exe	RegSvcs.exe
PID 3240 set thread context of 3052	3240	RegSvcs.exe	Explorer.EXE
PID 1928 set thread context of 3052	1928	chkdsk.exe	Explorer.EXE

Drops file in Program Files directory 4 IoCs

Processes:

Explorer.EXEchkdsk.exe

description	ioc	process
File created	C:\Program Files (x86)\Bf8fdu\bj1pqbmxwfkdhxtx.exe	Explorer.EXE
File opened for modification	C:\Program Files (x86)\Bf8fdu\bj1pqbmxwfkdhxtx.exe	Explorer.EXE
File opened for modification	C:\Program Files (x86)\Bf8fdu\bj1pqbmxwfkdhxtx.exe	chkdsk.exe
File opened for modification	C:\Program Files (x86)\Bf8fdu	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

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

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

chkdsk.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-1594587808-2047097707-2163810515-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	chkdsk.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

grace $.exeRegSvcs.exechkdsk.exe

pid	process
640	grace $.exe
640	grace $.exe
640	grace $.exe
640	grace $.exe
3240	RegSvcs.exe
3240	RegSvcs.exe
3240	RegSvcs.exe
3240	RegSvcs.exe
1928	chkdsk.exe
1928	chkdsk.exe
1928	chkdsk.exe
1928	chkdsk.exe
1928	chkdsk.exe
1928	chkdsk.exe
1928	chkdsk.exe
1928	chkdsk.exe
1928	chkdsk.exe
1928	chkdsk.exe
1928	chkdsk.exe
1928	chkdsk.exe
1928	chkdsk.exe
1928	chkdsk.exe
1928	chkdsk.exe
1928	chkdsk.exe
1928	chkdsk.exe
1928	chkdsk.exe
1928	chkdsk.exe
1928	chkdsk.exe
1928	chkdsk.exe
1928	chkdsk.exe
1928	chkdsk.exe
1928	chkdsk.exe
1928	chkdsk.exe
1928	chkdsk.exe
1928	chkdsk.exe
1928	chkdsk.exe
1928	chkdsk.exe
1928	chkdsk.exe
1928	chkdsk.exe
1928	chkdsk.exe
1928	chkdsk.exe
1928	chkdsk.exe
1928	chkdsk.exe
1928	chkdsk.exe
1928	chkdsk.exe
1928	chkdsk.exe
1928	chkdsk.exe
1928	chkdsk.exe
1928	chkdsk.exe
1928	chkdsk.exe
1928	chkdsk.exe
1928	chkdsk.exe
1928	chkdsk.exe
1928	chkdsk.exe
1928	chkdsk.exe
1928	chkdsk.exe
1928	chkdsk.exe
1928	chkdsk.exe
1928	chkdsk.exe
1928	chkdsk.exe
1928	chkdsk.exe
1928	chkdsk.exe
1928	chkdsk.exe
1928	chkdsk.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

3052 Explorer.EXE
Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

RegSvcs.exechkdsk.exe

pid process

3240 RegSvcs.exe
3240 RegSvcs.exe
3240 RegSvcs.exe
1928 chkdsk.exe
1928 chkdsk.exe
1928 chkdsk.exe
1928 chkdsk.exe

pid	process
3052	Explorer.EXE

pid	process
3240	RegSvcs.exe
3240	RegSvcs.exe
3240	RegSvcs.exe
1928	chkdsk.exe
1928	chkdsk.exe
1928	chkdsk.exe
1928	chkdsk.exe

Suspicious use of AdjustPrivilegeToken 13 IoCs

Processes:

grace $.exeRegSvcs.exechkdsk.exeExplorer.EXE

description	pid	process
Token: SeDebugPrivilege	640	grace $.exe
Token: SeDebugPrivilege	3240	RegSvcs.exe
Token: SeDebugPrivilege	1928	chkdsk.exe
Token: SeShutdownPrivilege	3052	Explorer.EXE
Token: SeCreatePagefilePrivilege	3052	Explorer.EXE
Token: SeShutdownPrivilege	3052	Explorer.EXE
Token: SeCreatePagefilePrivilege	3052	Explorer.EXE
Token: SeShutdownPrivilege	3052	Explorer.EXE
Token: SeCreatePagefilePrivilege	3052	Explorer.EXE
Token: SeShutdownPrivilege	3052	Explorer.EXE
Token: SeCreatePagefilePrivilege	3052	Explorer.EXE
Token: SeShutdownPrivilege	3052	Explorer.EXE
Token: SeCreatePagefilePrivilege	3052	Explorer.EXE

Suspicious use of UnmapMainImage 1 IoCs

Processes:

Explorer.EXE

pid process

3052 Explorer.EXE

pid	process
3052	Explorer.EXE

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

grace $.exeExplorer.EXEchkdsk.exe

description	pid	process	target process
PID 640 wrote to memory of 1572	640	grace $.exe	RegSvcs.exe
PID 640 wrote to memory of 1572	640	grace $.exe	RegSvcs.exe
PID 640 wrote to memory of 1572	640	grace $.exe	RegSvcs.exe
PID 640 wrote to memory of 3240	640	grace $.exe	RegSvcs.exe
PID 640 wrote to memory of 3240	640	grace $.exe	RegSvcs.exe
PID 640 wrote to memory of 3240	640	grace $.exe	RegSvcs.exe
PID 640 wrote to memory of 3240	640	grace $.exe	RegSvcs.exe
PID 640 wrote to memory of 3240	640	grace $.exe	RegSvcs.exe
PID 640 wrote to memory of 3240	640	grace $.exe	RegSvcs.exe
PID 3052 wrote to memory of 1928	3052	Explorer.EXE	chkdsk.exe
PID 3052 wrote to memory of 1928	3052	Explorer.EXE	chkdsk.exe
PID 3052 wrote to memory of 1928	3052	Explorer.EXE	chkdsk.exe
PID 1928 wrote to memory of 1896	1928	chkdsk.exe	cmd.exe
PID 1928 wrote to memory of 1896	1928	chkdsk.exe	cmd.exe
PID 1928 wrote to memory of 1896	1928	chkdsk.exe	cmd.exe
PID 1928 wrote to memory of 504	1928	chkdsk.exe	Firefox.exe
PID 1928 wrote to memory of 504	1928	chkdsk.exe	Firefox.exe
PID 1928 wrote to memory of 504	1928	chkdsk.exe	Firefox.exe
PID 3052 wrote to memory of 1680	3052	Explorer.EXE	bj1pqbmxwfkdhxtx.exe
PID 3052 wrote to memory of 1680	3052	Explorer.EXE	bj1pqbmxwfkdhxtx.exe
PID 3052 wrote to memory of 1680	3052	Explorer.EXE	bj1pqbmxwfkdhxtx.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Drops file in Program Files directory
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:3052

C:\Users\Admin\AppData\Local\Temp\grace $.exe
"C:\Users\Admin\AppData\Local\Temp\grace $.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:640

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
3⤵
PID:1572

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:3240

C:\Windows\SysWOW64\chkdsk.exe
"C:\Windows\SysWOW64\chkdsk.exe"
2⤵
- Adds policy Run key to start application
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1928

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
3⤵
PID:1896

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:504

C:\Program Files (x86)\Bf8fdu\bj1pqbmxwfkdhxtx.exe
"C:\Program Files (x86)\Bf8fdu\bj1pqbmxwfkdhxtx.exe"
2⤵
- Executes dropped EXE
PID:1680

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\Bf8fdu\bj1pqbmxwfkdhxtx.exe
MD5
0e06054beb13192588e745ee63a84173

SHA1
30b7d4d1277bafd04a83779fd566a1f834a8d113

SHA256
c5d6d56ded55fbd6c150ee3a0eb2e5671cae83106be2be4d70ce50aa50bab768

SHA512
251a112f3f037e62ff67a467389e47a56afb344bc942b17efa9bd2970494718b26bbee9adc3ac35f93ee4d2114aa426b6d0ea4bafad294b6c118a15f1977c215

Download Submit
C:\Program Files (x86)\Bf8fdu\bj1pqbmxwfkdhxtx.exe
MD5
0e06054beb13192588e745ee63a84173

SHA1
30b7d4d1277bafd04a83779fd566a1f834a8d113

SHA256
c5d6d56ded55fbd6c150ee3a0eb2e5671cae83106be2be4d70ce50aa50bab768

SHA512
251a112f3f037e62ff67a467389e47a56afb344bc942b17efa9bd2970494718b26bbee9adc3ac35f93ee4d2114aa426b6d0ea4bafad294b6c118a15f1977c215

Download Submit
memory/504-136-0x0000000000000000-mapping.dmp

Download
memory/504-144-0x000001B708E00000-0x000001B708EF5000-memory.dmp

Filesize
980KB

Download
memory/504-143-0x00007FF7B2F80000-0x00007FF7B3013000-memory.dmp

Filesize
588KB

Download
memory/640-122-0x00000000076E0000-0x000000000773F000-memory.dmp

Filesize
380KB

Download
memory/640-118-0x0000000005330000-0x0000000005331000-memory.dmp

Filesize
4KB

Download
memory/640-114-0x0000000000930000-0x0000000000931000-memory.dmp

Filesize
4KB

Download
memory/640-123-0x0000000009F30000-0x0000000009F5A000-memory.dmp

Filesize
168KB

Download
memory/640-116-0x0000000005820000-0x0000000005821000-memory.dmp

Filesize
4KB

Download
memory/640-117-0x00000000053C0000-0x00000000053C1000-memory.dmp

Filesize
4KB

Download
memory/640-121-0x00000000056B0000-0x00000000056C6000-memory.dmp

Filesize
88KB

Download
memory/640-120-0x0000000007750000-0x0000000007751000-memory.dmp

Filesize
4KB

Download
memory/640-119-0x0000000005320000-0x000000000581E000-memory.dmp

Filesize
5.0MB

Download
memory/1680-141-0x0000000002BB0000-0x0000000002BB1000-memory.dmp

Filesize
4KB

Download
memory/1680-140-0x0000000000840000-0x0000000000841000-memory.dmp

Filesize
4KB

Download
memory/1680-137-0x0000000000000000-mapping.dmp

Download
memory/1680-142-0x0000000000E50000-0x0000000000E51000-memory.dmp

Filesize
4KB

Download
memory/1896-130-0x0000000000000000-mapping.dmp

Download
memory/1928-133-0x0000000005090000-0x00000000053B0000-memory.dmp

Filesize
3.1MB

Download
memory/1928-134-0x0000000004F80000-0x000000000500F000-memory.dmp

Filesize
572KB

Download
memory/1928-131-0x0000000000920000-0x000000000092A000-memory.dmp

Filesize
40KB

Download
memory/1928-132-0x0000000000760000-0x0000000000789000-memory.dmp

Filesize
164KB

Download
memory/1928-129-0x0000000000000000-mapping.dmp

Download
memory/3052-135-0x0000000002550000-0x0000000002639000-memory.dmp

Filesize
932KB

Download
memory/3052-128-0x0000000005C80000-0x0000000005DFC000-memory.dmp

Filesize
1.5MB

Download
memory/3240-126-0x0000000001870000-0x0000000001B90000-memory.dmp

Filesize
3.1MB

Download
memory/3240-127-0x0000000000FF0000-0x0000000001000000-memory.dmp

Filesize
64KB

Download
memory/3240-125-0x000000000041D110-mapping.dmp

Download
memory/3240-124-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads