xloader | 1256f793afb38cb63438acdbb6e1e3646eb66d4ecd1c4fe79178702e43311c94

General

Target

DocNo2300058329.doc
Size

316KB
MD5

5e37b9c3ab14d8c2349506fa6be2de0d
SHA1

1e5777efbbe88c9f92ec0438eb07d9b7c92ea43d
SHA256

1256f793afb38cb63438acdbb6e1e3646eb66d4ecd1c4fe79178702e43311c94
SHA512

2eb029a1e719a5312084d0ead75af3276a9bab55a112f71df820fd4f681cdfda7eeabdc8ca1cd124e7c5381b5104bf712117fcf1ca6f4dacc6379970241cddca

Score

10^/10

xloader loader rat

Malware Config

Extracted

Family

xloader

Version

2.3

C2

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/900-74-0x000000000041D070-mapping.dmp	xloader
behavioral1/memory/900-73-0x0000000000400000-0x000000000042A000-memory.dmp	xloader
behavioral1/memory/1496-85-0x00000000000C0000-0x00000000000E9000-memory.dmp	xloader

Blocklisted process makes network request 1 IoCs

Processes:

EQNEDT32.EXE

flow pid process

7 1748 EQNEDT32.EXE
Downloads MZ/PE file
Executes dropped EXE 2 IoCs

Processes:

izu782514.exeizu782514.exe

pid process

928 izu782514.exe
900 izu782514.exe
Loads dropped DLL 1 IoCs

Processes:

EQNEDT32.EXE

pid process

1748 EQNEDT32.EXE
Suspicious use of NtSetInformationThreadHideFromDebugger 7 IoCs

Processes:

izu782514.exe

pid process

928 izu782514.exe
928 izu782514.exe
928 izu782514.exe
928 izu782514.exe
928 izu782514.exe
928 izu782514.exe
928 izu782514.exe

flow	pid	process
7	1748	EQNEDT32.EXE

pid	process
1748	EQNEDT32.EXE

Suspicious use of SetThreadContext 4 IoCs

Processes:

izu782514.exeizu782514.exewlanext.exe

description	pid	process	target process
PID 928 set thread context of 900	928	izu782514.exe	izu782514.exe
PID 900 set thread context of 1228	900	izu782514.exe	Explorer.EXE
PID 900 set thread context of 1228	900	izu782514.exe	Explorer.EXE
PID 1496 set thread context of 1228	1496	wlanext.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
Office loads VBA resources, possible macro or embedded object present
Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

1616 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

1748 EQNEDT32.EXE

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

pid	process
1616	timeout.exe

pid	process
1748	EQNEDT32.EXE

Modifies Internet Explorer settings 1 TTPs 9 IoCs

adware spyware

Modify Registry

T1112

Processes:

WINWORD.EXE

description	ioc	process
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
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\Se&nd to OneNote	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
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 (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 (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
Key created	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Toolbar	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt	WINWORD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

WINWORD.EXE

pid process

1756 WINWORD.EXE

pid	process
1756	WINWORD.EXE

Suspicious behavior: EnumeratesProcesses 32 IoCs

Processes:

izu782514.exeizu782514.exewlanext.exe

pid	process
928	izu782514.exe
928	izu782514.exe
928	izu782514.exe
900	izu782514.exe
900	izu782514.exe
900	izu782514.exe
1496	wlanext.exe
1496	wlanext.exe
1496	wlanext.exe
1496	wlanext.exe
1496	wlanext.exe
1496	wlanext.exe
1496	wlanext.exe
1496	wlanext.exe
1496	wlanext.exe
1496	wlanext.exe
1496	wlanext.exe
1496	wlanext.exe
1496	wlanext.exe
1496	wlanext.exe
1496	wlanext.exe
1496	wlanext.exe
1496	wlanext.exe
1496	wlanext.exe
1496	wlanext.exe
1496	wlanext.exe
1496	wlanext.exe
1496	wlanext.exe
1496	wlanext.exe
1496	wlanext.exe
1496	wlanext.exe
1496	wlanext.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

1228 Explorer.EXE
Suspicious behavior: MapViewOfSection 6 IoCs

Processes:

izu782514.exewlanext.exe

pid process

900 izu782514.exe
900 izu782514.exe
900 izu782514.exe
900 izu782514.exe
1496 wlanext.exe
1496 wlanext.exe

pid	process
900	izu782514.exe
900	izu782514.exe
900	izu782514.exe
900	izu782514.exe
1496	wlanext.exe
1496	wlanext.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

Processes:

izu782514.exeizu782514.exewlanext.exeExplorer.EXE

description	pid	process
Token: SeDebugPrivilege	928	izu782514.exe
Token: SeDebugPrivilege	900	izu782514.exe
Token: SeDebugPrivilege	1496	wlanext.exe
Token: SeShutdownPrivilege	1228	Explorer.EXE
Token: SeShutdownPrivilege	1228	Explorer.EXE

Suspicious use of FindShellTrayWindow 4 IoCs

Processes:

Explorer.EXE

pid process

1228 Explorer.EXE
1228 Explorer.EXE
1228 Explorer.EXE
1228 Explorer.EXE

Suspicious use of SendNotifyMessage 14 IoCs

Processes:

Explorer.EXE

pid	process
1228	Explorer.EXE
1228	Explorer.EXE
1228	Explorer.EXE
1228	Explorer.EXE
1228	Explorer.EXE
1228	Explorer.EXE
1228	Explorer.EXE
1228	Explorer.EXE
1228	Explorer.EXE
1228	Explorer.EXE
1228	Explorer.EXE
1228	Explorer.EXE
1228	Explorer.EXE
1228	Explorer.EXE

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

WINWORD.EXE

pid process

1756 WINWORD.EXE
1756 WINWORD.EXE

pid	process
1756	WINWORD.EXE
1756	WINWORD.EXE

Suspicious use of WriteProcessMemory 32 IoCs

Processes:

EQNEDT32.EXEizu782514.execmd.exeExplorer.EXEwlanext.exeWINWORD.EXE

description	pid	process	target process
PID 1748 wrote to memory of 928	1748	EQNEDT32.EXE	izu782514.exe
PID 1748 wrote to memory of 928	1748	EQNEDT32.EXE	izu782514.exe
PID 1748 wrote to memory of 928	1748	EQNEDT32.EXE	izu782514.exe
PID 1748 wrote to memory of 928	1748	EQNEDT32.EXE	izu782514.exe
PID 928 wrote to memory of 1692	928	izu782514.exe	cmd.exe
PID 928 wrote to memory of 1692	928	izu782514.exe	cmd.exe
PID 928 wrote to memory of 1692	928	izu782514.exe	cmd.exe
PID 928 wrote to memory of 1692	928	izu782514.exe	cmd.exe
PID 1692 wrote to memory of 1616	1692	cmd.exe	timeout.exe
PID 1692 wrote to memory of 1616	1692	cmd.exe	timeout.exe
PID 1692 wrote to memory of 1616	1692	cmd.exe	timeout.exe
PID 1692 wrote to memory of 1616	1692	cmd.exe	timeout.exe
PID 928 wrote to memory of 900	928	izu782514.exe	izu782514.exe
PID 928 wrote to memory of 900	928	izu782514.exe	izu782514.exe
PID 928 wrote to memory of 900	928	izu782514.exe	izu782514.exe
PID 928 wrote to memory of 900	928	izu782514.exe	izu782514.exe
PID 928 wrote to memory of 900	928	izu782514.exe	izu782514.exe
PID 928 wrote to memory of 900	928	izu782514.exe	izu782514.exe
PID 928 wrote to memory of 900	928	izu782514.exe	izu782514.exe
PID 928 wrote to memory of 900	928	izu782514.exe	izu782514.exe
PID 1228 wrote to memory of 1496	1228	Explorer.EXE	wlanext.exe
PID 1228 wrote to memory of 1496	1228	Explorer.EXE	wlanext.exe
PID 1228 wrote to memory of 1496	1228	Explorer.EXE	wlanext.exe
PID 1228 wrote to memory of 1496	1228	Explorer.EXE	wlanext.exe
PID 1496 wrote to memory of 1748	1496	wlanext.exe	cmd.exe
PID 1496 wrote to memory of 1748	1496	wlanext.exe	cmd.exe
PID 1496 wrote to memory of 1748	1496	wlanext.exe	cmd.exe
PID 1496 wrote to memory of 1748	1496	wlanext.exe	cmd.exe
PID 1756 wrote to memory of 836	1756	WINWORD.EXE	splwow64.exe
PID 1756 wrote to memory of 836	1756	WINWORD.EXE	splwow64.exe
PID 1756 wrote to memory of 836	1756	WINWORD.EXE	splwow64.exe
PID 1756 wrote to memory of 836	1756	WINWORD.EXE	splwow64.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1228

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"
2⤵
- Drops file in Windows directory
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1756

C:\Windows\splwow64.exe
C:\Windows\splwow64.exe 12288
3⤵
PID:836

C:\Windows\SysWOW64\wlanext.exe
"C:\Windows\SysWOW64\wlanext.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1496

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Roaming\izu782514.exe"
3⤵
PID:1748

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:1748

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:928

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c timeout 1
3⤵
- Suspicious use of WriteProcessMemory
PID:1692

C:\Windows\SysWOW64\timeout.exe
timeout 1
4⤵
- Delays execution with timeout.exe
PID:1616

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:900

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Exploitation for Client Execution

1

T1203

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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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
memory/836-90-0x000007FEFBD21000-0x000007FEFBD23000-memory.dmp

Filesize
8KB

Download
memory/836-89-0x0000000000000000-mapping.dmp

Download
memory/900-73-0x0000000000400000-0x000000000042A000-memory.dmp

Filesize
168KB

Download
memory/900-80-0x0000000000450000-0x0000000000461000-memory.dmp

Filesize
68KB

Download
memory/900-78-0x00000000003E0000-0x00000000003F1000-memory.dmp

Filesize
68KB

Download
memory/900-77-0x00000000008D0000-0x0000000000BD3000-memory.dmp

Filesize
3.0MB

Download
memory/900-74-0x000000000041D070-mapping.dmp

Download
memory/928-70-0x0000000000A70000-0x0000000000A71000-memory.dmp

Filesize
4KB

Download
memory/928-64-0x0000000000000000-mapping.dmp

Download
memory/928-69-0x0000000000330000-0x0000000000378000-memory.dmp

Filesize
288KB

Download
memory/928-67-0x0000000001200000-0x0000000001201000-memory.dmp

Filesize
4KB

Download
memory/1228-79-0x0000000004190000-0x0000000004253000-memory.dmp

Filesize
780KB

Download
memory/1228-91-0x0000000004D00000-0x0000000004DBF000-memory.dmp

Filesize
764KB

Download
memory/1228-81-0x0000000004E50000-0x0000000004F34000-memory.dmp

Filesize
912KB

Download
memory/1496-82-0x0000000000000000-mapping.dmp

Download
memory/1496-85-0x00000000000C0000-0x00000000000E9000-memory.dmp

Filesize
164KB

Download
memory/1496-86-0x0000000001E30000-0x0000000002133000-memory.dmp

Filesize
3.0MB

Download
memory/1496-84-0x0000000000220000-0x0000000000236000-memory.dmp

Filesize
88KB

Download
memory/1496-88-0x0000000001D10000-0x0000000001DA0000-memory.dmp

Filesize
576KB

Download
memory/1616-72-0x0000000000000000-mapping.dmp

Download
memory/1692-71-0x0000000000000000-mapping.dmp

Download
memory/1748-62-0x0000000075FE1000-0x0000000075FE3000-memory.dmp

Filesize
8KB

Download
memory/1748-83-0x0000000000000000-mapping.dmp

Download
memory/1756-59-0x0000000072821000-0x0000000072824000-memory.dmp

Filesize
12KB

Download
memory/1756-61-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1756-60-0x00000000702A1000-0x00000000702A3000-memory.dmp

Filesize
8KB

Download
memory/1756-92-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads