xloader | 1256f793afb38cb63438acdbb6e1e3646eb66d4ecd1c4fe79178702e43311c94

Analysis

max time kernel
150s
max time network
149s
platform
windows7_x64
resource
win7v20210410
submitted
02-05-2021 05:22

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General

Target

DocNo2300058329.doc__.rtf
Size

316KB
MD5

5e37b9c3ab14d8c2349506fa6be2de0d
SHA1

1e5777efbbe88c9f92ec0438eb07d9b7c92ea43d
SHA256

1256f793afb38cb63438acdbb6e1e3646eb66d4ecd1c4fe79178702e43311c94
SHA512

2eb029a1e719a5312084d0ead75af3276a9bab55a112f71df820fd4f681cdfda7eeabdc8ca1cd124e7c5381b5104bf712117fcf1ca6f4dacc6379970241cddca

Score

10^/10

xloader loader rat

Malware Config

Extracted

Family

xloader

Version

2.3

http://www.jqjdgw.com/ued5/

Decoy

italiancosmeticbeauty.com

zhima7.com

phresheffect.com

comp-savvy.net

xjhtcaum.com

copperbrassgermkey.com

smero.financial

opticsoptimum.com

pisanosportpraxis.com

pediatricfeedrates.com

binsogleam.com

sarahseatter.com

wywatershed.com

smellyhomeshop.com

naviorchidlife.com

cunerier.com

thecornercomputers.com

brightwoodcollection.com

taxprep-repsolutions.net

phukien4u.net

Signatures

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

Xloader Payload 3 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1732-74-0x0000000000400000-0x000000000042A000-memory.dmp	xloader
behavioral1/memory/1732-75-0x000000000041D070-mapping.dmp	xloader
behavioral1/memory/1712-96-0x0000000000080000-0x00000000000A9000-memory.dmp	xloader

Blocklisted process makes network request 1 IoCs

Processes:

EQNEDT32.EXE

flow pid process

6 1812 EQNEDT32.EXE
Downloads MZ/PE file
Executes dropped EXE 2 IoCs

Processes:

izu782514.exeizu782514.exe

pid process

852 izu782514.exe
1732 izu782514.exe
Loads dropped DLL 6 IoCs

Processes:

EQNEDT32.EXEWerFault.exe

pid process

1812 EQNEDT32.EXE
860 WerFault.exe
860 WerFault.exe
860 WerFault.exe
860 WerFault.exe
860 WerFault.exe
Suspicious use of NtSetInformationThreadHideFromDebugger 7 IoCs

Processes:

izu782514.exe

pid process

852 izu782514.exe
852 izu782514.exe
852 izu782514.exe
852 izu782514.exe
852 izu782514.exe
852 izu782514.exe
852 izu782514.exe

flow	pid	process
6	1812	EQNEDT32.EXE

pid	process
1812	EQNEDT32.EXE
860	WerFault.exe
860	WerFault.exe
860	WerFault.exe
860	WerFault.exe
860	WerFault.exe

Suspicious use of SetThreadContext 4 IoCs

Processes:

izu782514.exeizu782514.execontrol.exe

description	pid	process	target process
PID 852 set thread context of 1732	852	izu782514.exe	izu782514.exe
PID 1732 set thread context of 1356	1732	izu782514.exe	Explorer.EXE
PID 1732 set thread context of 1356	1732	izu782514.exe	Explorer.EXE
PID 1712 set thread context of 1356	1712	control.exe	Explorer.EXE

Drops file in Windows directory 1 IoCs

Processes:

WINWORD.EXE

description ioc process

File opened for modification C:\Windows\Debug\WIA\wiatrace.log WINWORD.EXE
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

860 852 WerFault.exe izu782514.exe
Office loads VBA resources, possible macro or embedded object present
Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

1608 timeout.exe
Launches Equation Editor 1 TTPs 1 IoCs
Equation Editor is an old Office component often targeted by exploits such as CVE-2017-11882.
exploit

Exploitation for Client Execution
T1203

Processes:

EQNEDT32.EXE

pid process

1812 EQNEDT32.EXE

description	ioc	process
File opened for modification	C:\Windows\Debug\WIA\wiatrace.log	WINWORD.EXE

pid	pid_target	process	target process
860	852	WerFault.exe	izu782514.exe

pid	process
1608	timeout.exe

pid	process
1812	EQNEDT32.EXE

Modifies Internet Explorer settings 1 TTPs 9 IoCs

adware spyware

Modify Registry

T1112

Processes:

WINWORD.EXE

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Toolbar	WINWORD.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55"	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\EXCEL.EXE/3000"	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105"	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel	WINWORD.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1"	WINWORD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

WINWORD.EXE

pid process

452 WINWORD.EXE

pid	process
452	WINWORD.EXE

Suspicious behavior: EnumeratesProcesses 38 IoCs

Processes:

izu782514.exeizu782514.exeWerFault.execontrol.exe

pid	process
852	izu782514.exe
852	izu782514.exe
852	izu782514.exe
1732	izu782514.exe
1732	izu782514.exe
860	WerFault.exe
860	WerFault.exe
860	WerFault.exe
860	WerFault.exe
860	WerFault.exe
860	WerFault.exe
1732	izu782514.exe
1712	control.exe
1712	control.exe
1712	control.exe
1712	control.exe
1712	control.exe
1712	control.exe
1712	control.exe
1712	control.exe
1712	control.exe
1712	control.exe
1712	control.exe
1712	control.exe
1712	control.exe
1712	control.exe
1712	control.exe
1712	control.exe
1712	control.exe
1712	control.exe
1712	control.exe
1712	control.exe
1712	control.exe
1712	control.exe
1712	control.exe
1712	control.exe
1712	control.exe
1712	control.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

WerFault.exe

pid process

860 WerFault.exe
Suspicious behavior: MapViewOfSection 6 IoCs

Processes:

izu782514.execontrol.exe

pid process

1732 izu782514.exe
1732 izu782514.exe
1732 izu782514.exe
1732 izu782514.exe
1712 control.exe
1712 control.exe

pid	process
860	WerFault.exe

pid	process
1732	izu782514.exe
1732	izu782514.exe
1732	izu782514.exe
1732	izu782514.exe
1712	control.exe
1712	control.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

Processes:

izu782514.exeizu782514.exeWerFault.exeExplorer.EXEcontrol.exe

description	pid	process
Token: SeDebugPrivilege	852	izu782514.exe
Token: SeDebugPrivilege	1732	izu782514.exe
Token: SeDebugPrivilege	860	WerFault.exe
Token: SeShutdownPrivilege	1356	Explorer.EXE
Token: SeDebugPrivilege	1712	control.exe

Suspicious use of FindShellTrayWindow 6 IoCs

Processes:

Explorer.EXE

pid process

1356 Explorer.EXE
1356 Explorer.EXE
1356 Explorer.EXE
1356 Explorer.EXE
1356 Explorer.EXE
1356 Explorer.EXE
Suspicious use of SendNotifyMessage 4 IoCs

Processes:

Explorer.EXE

pid process

1356 Explorer.EXE
1356 Explorer.EXE
1356 Explorer.EXE
1356 Explorer.EXE
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

WINWORD.EXE

pid process

452 WINWORD.EXE
452 WINWORD.EXE

pid	process
1356	Explorer.EXE
1356	Explorer.EXE
1356	Explorer.EXE
1356	Explorer.EXE
1356	Explorer.EXE
1356	Explorer.EXE

pid	process
1356	Explorer.EXE
1356	Explorer.EXE
1356	Explorer.EXE
1356	Explorer.EXE

pid	process
452	WINWORD.EXE
452	WINWORD.EXE

Suspicious use of WriteProcessMemory 36 IoCs

Processes:

EQNEDT32.EXEizu782514.execmd.exeWINWORD.EXEExplorer.EXEcontrol.exe

description	pid	process	target process
PID 1812 wrote to memory of 852	1812	EQNEDT32.EXE	izu782514.exe
PID 1812 wrote to memory of 852	1812	EQNEDT32.EXE	izu782514.exe
PID 1812 wrote to memory of 852	1812	EQNEDT32.EXE	izu782514.exe
PID 1812 wrote to memory of 852	1812	EQNEDT32.EXE	izu782514.exe
PID 852 wrote to memory of 1708	852	izu782514.exe	cmd.exe
PID 852 wrote to memory of 1708	852	izu782514.exe	cmd.exe
PID 852 wrote to memory of 1708	852	izu782514.exe	cmd.exe
PID 852 wrote to memory of 1708	852	izu782514.exe	cmd.exe
PID 1708 wrote to memory of 1608	1708	cmd.exe	timeout.exe
PID 1708 wrote to memory of 1608	1708	cmd.exe	timeout.exe
PID 1708 wrote to memory of 1608	1708	cmd.exe	timeout.exe
PID 1708 wrote to memory of 1608	1708	cmd.exe	timeout.exe
PID 852 wrote to memory of 1732	852	izu782514.exe	izu782514.exe
PID 852 wrote to memory of 1732	852	izu782514.exe	izu782514.exe
PID 852 wrote to memory of 1732	852	izu782514.exe	izu782514.exe
PID 852 wrote to memory of 1732	852	izu782514.exe	izu782514.exe
PID 852 wrote to memory of 1732	852	izu782514.exe	izu782514.exe
PID 852 wrote to memory of 1732	852	izu782514.exe	izu782514.exe
PID 852 wrote to memory of 1732	852	izu782514.exe	izu782514.exe
PID 852 wrote to memory of 1732	852	izu782514.exe	izu782514.exe
PID 852 wrote to memory of 860	852	izu782514.exe	WerFault.exe
PID 852 wrote to memory of 860	852	izu782514.exe	WerFault.exe
PID 852 wrote to memory of 860	852	izu782514.exe	WerFault.exe
PID 852 wrote to memory of 860	852	izu782514.exe	WerFault.exe
PID 452 wrote to memory of 632	452	WINWORD.EXE	splwow64.exe
PID 452 wrote to memory of 632	452	WINWORD.EXE	splwow64.exe
PID 452 wrote to memory of 632	452	WINWORD.EXE	splwow64.exe
PID 452 wrote to memory of 632	452	WINWORD.EXE	splwow64.exe
PID 1356 wrote to memory of 1712	1356	Explorer.EXE	control.exe
PID 1356 wrote to memory of 1712	1356	Explorer.EXE	control.exe
PID 1356 wrote to memory of 1712	1356	Explorer.EXE	control.exe
PID 1356 wrote to memory of 1712	1356	Explorer.EXE	control.exe
PID 1712 wrote to memory of 1352	1712	control.exe	cmd.exe
PID 1712 wrote to memory of 1352	1712	control.exe	cmd.exe
PID 1712 wrote to memory of 1352	1712	control.exe	cmd.exe
PID 1712 wrote to memory of 1352	1712	control.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1356

C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE
"C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\DocNo2300058329.doc__.rtf"
2⤵
- Drops file in Windows directory
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:452

C:\Windows\splwow64.exe
C:\Windows\splwow64.exe 12288
3⤵
PID:632

C:\Windows\SysWOW64\control.exe
"C:\Windows\SysWOW64\control.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1712

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Roaming\izu782514.exe"
3⤵
PID:1352

C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE
"C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE" -Embedding
1⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Launches Equation Editor
- Suspicious use of WriteProcessMemory
PID:1812

C:\Users\Admin\AppData\Roaming\izu782514.exe
"C:\Users\Admin\AppData\Roaming\izu782514.exe"
2⤵
- Executes dropped EXE
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:852

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c timeout 1
3⤵
- Suspicious use of WriteProcessMemory
PID:1708

C:\Windows\SysWOW64\timeout.exe
timeout 1
4⤵
- Delays execution with timeout.exe
PID:1608

C:\Users\Admin\AppData\Roaming\izu782514.exe
"C:\Users\Admin\AppData\Roaming\izu782514.exe"
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1732

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 852 -s 884
3⤵
- Loads dropped DLL
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
PID:860

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Exploitation for Client Execution

T1203

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\izu782514.exe

MD5
9597713af0d2566f6e3186196d31e520

SHA1
29d71fdcf9bf142da347470cbf0eae90b352dd7d

SHA256
f3c279e61de77236f3390c91dee09f02aa01974e14e429426fa174e0ff8a7512

SHA512
593e4ac84836db4462cafd1420cc2d5944207e518b64be801acec98ad17d441bcac16c06784894ade681d63ef4140b1098d257fd06f6ae21c39819101d1453ed

Download Submit
C:\Users\Admin\AppData\Roaming\izu782514.exe

MD5
9597713af0d2566f6e3186196d31e520

SHA1
29d71fdcf9bf142da347470cbf0eae90b352dd7d

SHA256
f3c279e61de77236f3390c91dee09f02aa01974e14e429426fa174e0ff8a7512

SHA512
593e4ac84836db4462cafd1420cc2d5944207e518b64be801acec98ad17d441bcac16c06784894ade681d63ef4140b1098d257fd06f6ae21c39819101d1453ed

Download Submit
C:\Users\Admin\AppData\Roaming\izu782514.exe

MD5
9597713af0d2566f6e3186196d31e520

SHA1
29d71fdcf9bf142da347470cbf0eae90b352dd7d

SHA256
f3c279e61de77236f3390c91dee09f02aa01974e14e429426fa174e0ff8a7512

SHA512
593e4ac84836db4462cafd1420cc2d5944207e518b64be801acec98ad17d441bcac16c06784894ade681d63ef4140b1098d257fd06f6ae21c39819101d1453ed

Download Submit
\Users\Admin\AppData\Roaming\izu782514.exe

MD5
9597713af0d2566f6e3186196d31e520

SHA1
29d71fdcf9bf142da347470cbf0eae90b352dd7d

SHA256
f3c279e61de77236f3390c91dee09f02aa01974e14e429426fa174e0ff8a7512

SHA512
593e4ac84836db4462cafd1420cc2d5944207e518b64be801acec98ad17d441bcac16c06784894ade681d63ef4140b1098d257fd06f6ae21c39819101d1453ed

Download Submit
\Users\Admin\AppData\Roaming\izu782514.exe

MD5
9597713af0d2566f6e3186196d31e520

SHA1
29d71fdcf9bf142da347470cbf0eae90b352dd7d

SHA256
f3c279e61de77236f3390c91dee09f02aa01974e14e429426fa174e0ff8a7512

SHA512
593e4ac84836db4462cafd1420cc2d5944207e518b64be801acec98ad17d441bcac16c06784894ade681d63ef4140b1098d257fd06f6ae21c39819101d1453ed

Download Submit
\Users\Admin\AppData\Roaming\izu782514.exe

MD5
9597713af0d2566f6e3186196d31e520

SHA1
29d71fdcf9bf142da347470cbf0eae90b352dd7d

SHA256
f3c279e61de77236f3390c91dee09f02aa01974e14e429426fa174e0ff8a7512

SHA512
593e4ac84836db4462cafd1420cc2d5944207e518b64be801acec98ad17d441bcac16c06784894ade681d63ef4140b1098d257fd06f6ae21c39819101d1453ed

Download Submit
\Users\Admin\AppData\Roaming\izu782514.exe

MD5
9597713af0d2566f6e3186196d31e520

SHA1
29d71fdcf9bf142da347470cbf0eae90b352dd7d

SHA256
f3c279e61de77236f3390c91dee09f02aa01974e14e429426fa174e0ff8a7512

SHA512
593e4ac84836db4462cafd1420cc2d5944207e518b64be801acec98ad17d441bcac16c06784894ade681d63ef4140b1098d257fd06f6ae21c39819101d1453ed

Download Submit
\Users\Admin\AppData\Roaming\izu782514.exe

MD5
9597713af0d2566f6e3186196d31e520

SHA1
29d71fdcf9bf142da347470cbf0eae90b352dd7d

SHA256
f3c279e61de77236f3390c91dee09f02aa01974e14e429426fa174e0ff8a7512

SHA512
593e4ac84836db4462cafd1420cc2d5944207e518b64be801acec98ad17d441bcac16c06784894ade681d63ef4140b1098d257fd06f6ae21c39819101d1453ed

Download Submit
\Users\Admin\AppData\Roaming\izu782514.exe

MD5
9597713af0d2566f6e3186196d31e520

SHA1
29d71fdcf9bf142da347470cbf0eae90b352dd7d

SHA256
f3c279e61de77236f3390c91dee09f02aa01974e14e429426fa174e0ff8a7512

SHA512
593e4ac84836db4462cafd1420cc2d5944207e518b64be801acec98ad17d441bcac16c06784894ade681d63ef4140b1098d257fd06f6ae21c39819101d1453ed

Download Submit
memory/452-60-0x0000000072881000-0x0000000072884000-memory.dmp

Filesize
12KB

Download
memory/452-100-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/452-62-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/452-61-0x0000000070301000-0x0000000070303000-memory.dmp

Filesize
8KB

Download
memory/632-89-0x000007FEFBEF1000-0x000007FEFBEF3000-memory.dmp

Filesize
8KB

Download
memory/632-88-0x0000000000000000-mapping.dmp

Download
memory/852-70-0x0000000000330000-0x0000000000378000-memory.dmp

Filesize
288KB

Download
memory/852-68-0x00000000008E0000-0x00000000008E1000-memory.dmp

Filesize
4KB

Download
memory/852-73-0x0000000000B90000-0x0000000000B91000-memory.dmp

Filesize
4KB

Download
memory/852-65-0x0000000000000000-mapping.dmp

Download
memory/860-87-0x0000000001C90000-0x0000000001C91000-memory.dmp

Filesize
4KB

Download
memory/860-77-0x0000000000000000-mapping.dmp

Download
memory/1352-94-0x0000000000000000-mapping.dmp

Download
memory/1356-99-0x0000000006590000-0x00000000066AF000-memory.dmp

Filesize
1.1MB

Download
memory/1356-85-0x0000000007180000-0x0000000007321000-memory.dmp

Filesize
1.6MB

Download
memory/1356-91-0x0000000004160000-0x0000000004229000-memory.dmp

Filesize
804KB

Download
memory/1608-72-0x0000000000000000-mapping.dmp

Download
memory/1708-71-0x0000000000000000-mapping.dmp

Download
memory/1712-98-0x0000000001D00000-0x0000000001D90000-memory.dmp

Filesize
576KB

Download
memory/1712-96-0x0000000000080000-0x00000000000A9000-memory.dmp

Filesize
164KB

Download
memory/1712-97-0x0000000001ED0000-0x00000000021D3000-memory.dmp

Filesize
3.0MB

Download
memory/1712-95-0x0000000000360000-0x000000000037F000-memory.dmp

Filesize
124KB

Download
memory/1712-92-0x0000000000000000-mapping.dmp

Download
memory/1732-83-0x0000000000AF0000-0x0000000000DF3000-memory.dmp

Filesize
3.0MB

Download
memory/1732-90-0x00000000001D0000-0x00000000001E1000-memory.dmp

Filesize
68KB

Download
memory/1732-84-0x0000000000180000-0x0000000000191000-memory.dmp

Filesize
68KB

Download
memory/1732-75-0x000000000041D070-mapping.dmp

Download
memory/1732-74-0x0000000000400000-0x000000000042A000-memory.dmp

Filesize
168KB

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memory/1812-63-0x00000000753E1000-0x00000000753E3000-memory.dmp

Filesize
8KB

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