xloader | 79be541f25bdd8abb7e7111bf0d3642b941cfa0349d2b5e7441773c81e6aa8d4

General

Target

$$$.exe
Size

761KB
MD5

2d4991b52cb7c3f5e3cb8ed4d22c069a
SHA1

5f16af33b1cc461e4c6b4f5d1848547040fa1772
SHA256

984dec79b881adf59d5308f52fddeda0fbccbd917b750f6ec9a5be1a1a4dc0fa
SHA512

ee17ff87e053092385d90337cbab6719822f137dbf33408f10dc52f4c0db2579f54d56d54be7e55439945705de9005c27e361c29909d05704339c5333a8b14a2

Score

10^/10

xloader jdt0 loader rat suricata

Malware Config

Extracted

Family

xloader

Version

2.5

Campaign

jdt0

C2

http://www.jen4x.com/jdt0/

Decoy

william188.com

kmknim.com

freedomnofear.com

industrialohare.com

devopswave.com

g1fz.com

aliceguidi.info

linkared.com

crossboda.com

lpddr3.com

ktnword.xyz

productsdesign.top

dulichnhatviet.com

piazzaassociates.com

inpude.com

kmi.contractors

getkyrobak.com

sportinggoodssuperstore.com

trifoly.info

aspectjudge.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

Xloader Payload 3 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/2768-126-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral2/memory/2768-127-0x000000000041D390-mapping.dmp	xloader
behavioral2/memory/3696-134-0x0000000000C00000-0x0000000000C29000-memory.dmp	xloader

Suspicious use of SetThreadContext 3 IoCs

Processes:

$$$.exeRegSvcs.exechkdsk.exe

description	pid	process	target process
PID 2064 set thread context of 2768	2064	$$$.exe	RegSvcs.exe
PID 2768 set thread context of 3068	2768	RegSvcs.exe	Explorer.EXE
PID 3696 set thread context of 3068	3696	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

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

Suspicious behavior: EnumeratesProcesses 46 IoCs

Processes:

$$$.exeRegSvcs.exechkdsk.exe

pid	process
2064	$$$.exe
2064	$$$.exe
2768	RegSvcs.exe
2768	RegSvcs.exe
2768	RegSvcs.exe
2768	RegSvcs.exe
3696	chkdsk.exe
3696	chkdsk.exe
3696	chkdsk.exe
3696	chkdsk.exe
3696	chkdsk.exe
3696	chkdsk.exe
3696	chkdsk.exe
3696	chkdsk.exe
3696	chkdsk.exe
3696	chkdsk.exe
3696	chkdsk.exe
3696	chkdsk.exe
3696	chkdsk.exe
3696	chkdsk.exe
3696	chkdsk.exe
3696	chkdsk.exe
3696	chkdsk.exe
3696	chkdsk.exe
3696	chkdsk.exe
3696	chkdsk.exe
3696	chkdsk.exe
3696	chkdsk.exe
3696	chkdsk.exe
3696	chkdsk.exe
3696	chkdsk.exe
3696	chkdsk.exe
3696	chkdsk.exe
3696	chkdsk.exe
3696	chkdsk.exe
3696	chkdsk.exe
3696	chkdsk.exe
3696	chkdsk.exe
3696	chkdsk.exe
3696	chkdsk.exe
3696	chkdsk.exe
3696	chkdsk.exe
3696	chkdsk.exe
3696	chkdsk.exe
3696	chkdsk.exe
3696	chkdsk.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

3068 Explorer.EXE
Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

RegSvcs.exechkdsk.exe

pid process

2768 RegSvcs.exe
2768 RegSvcs.exe
2768 RegSvcs.exe
3696 chkdsk.exe
3696 chkdsk.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

$$$.exeRegSvcs.exechkdsk.exe

description pid process

Token: SeDebugPrivilege 2064 $$$.exe
Token: SeDebugPrivilege 2768 RegSvcs.exe
Token: SeDebugPrivilege 3696 chkdsk.exe

pid	process
3068	Explorer.EXE

pid	process
2768	RegSvcs.exe
2768	RegSvcs.exe
2768	RegSvcs.exe
3696	chkdsk.exe
3696	chkdsk.exe

description	pid	process
Token: SeDebugPrivilege	2064	$$$.exe
Token: SeDebugPrivilege	2768	RegSvcs.exe
Token: SeDebugPrivilege	3696	chkdsk.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

$$$.exeExplorer.EXEchkdsk.exe

description	pid	process	target process
PID 2064 wrote to memory of 2768	2064	$$$.exe	RegSvcs.exe
PID 2064 wrote to memory of 2768	2064	$$$.exe	RegSvcs.exe
PID 2064 wrote to memory of 2768	2064	$$$.exe	RegSvcs.exe
PID 2064 wrote to memory of 2768	2064	$$$.exe	RegSvcs.exe
PID 2064 wrote to memory of 2768	2064	$$$.exe	RegSvcs.exe
PID 2064 wrote to memory of 2768	2064	$$$.exe	RegSvcs.exe
PID 3068 wrote to memory of 3696	3068	Explorer.EXE	chkdsk.exe
PID 3068 wrote to memory of 3696	3068	Explorer.EXE	chkdsk.exe
PID 3068 wrote to memory of 3696	3068	Explorer.EXE	chkdsk.exe
PID 3696 wrote to memory of 3052	3696	chkdsk.exe	cmd.exe
PID 3696 wrote to memory of 3052	3696	chkdsk.exe	cmd.exe
PID 3696 wrote to memory of 3052	3696	chkdsk.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:3068

C:\Users\Admin\AppData\Local\Temp\$$$.exe
"C:\Users\Admin\AppData\Local\Temp\$$$.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2064

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:2768

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:3696

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
3⤵
PID:3052

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

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

memory/2064-115-0x0000000000750000-0x0000000000751000-memory.dmp

Filesize
4KB

Download
memory/2064-117-0x0000000005540000-0x0000000005541000-memory.dmp

Filesize
4KB

Download
memory/2064-118-0x00000000050E0000-0x00000000050E1000-memory.dmp

Filesize
4KB

Download
memory/2064-119-0x0000000005040000-0x000000000553E000-memory.dmp

Filesize
5.0MB

Download
memory/2064-120-0x0000000005060000-0x0000000005061000-memory.dmp

Filesize
4KB

Download
memory/2064-121-0x0000000008580000-0x0000000008581000-memory.dmp

Filesize
4KB

Download
memory/2064-122-0x0000000005500000-0x0000000005507000-memory.dmp

Filesize
28KB

Download
memory/2064-123-0x0000000008C00000-0x0000000008C01000-memory.dmp

Filesize
4KB

Download
memory/2064-124-0x0000000008AA0000-0x0000000008AFF000-memory.dmp

Filesize
380KB

Download
memory/2064-125-0x0000000008B10000-0x0000000008B3F000-memory.dmp

Filesize
188KB

Download
memory/2768-126-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/2768-127-0x000000000041D390-mapping.dmp

Download
memory/2768-128-0x0000000001A90000-0x0000000001DB0000-memory.dmp

Filesize
3.1MB

Download
memory/2768-130-0x0000000001620000-0x0000000001631000-memory.dmp

Filesize
68KB

Download
memory/3052-132-0x0000000000000000-mapping.dmp

Download
memory/3068-129-0x0000000000CC0000-0x0000000000DF1000-memory.dmp

Filesize
1.2MB

Download
memory/3068-137-0x00000000052A0000-0x00000000053F4000-memory.dmp

Filesize
1.3MB

Download
memory/3696-131-0x0000000000000000-mapping.dmp

Download
memory/3696-133-0x0000000000FC0000-0x0000000000FCA000-memory.dmp

Filesize
40KB

Download
memory/3696-134-0x0000000000C00000-0x0000000000C29000-memory.dmp

Filesize
164KB

Download
memory/3696-135-0x0000000005520000-0x0000000005840000-memory.dmp

Filesize
3.1MB

Download
memory/3696-136-0x00000000051E0000-0x0000000005270000-memory.dmp

Filesize
576KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads