xloader | 4ea9973ca43d11271e1a72087a64a55d12e5dcd90a51e0ab9dd86652732b1560

General

Target

0. 20211019 Spec Samples Sheet/doc17981120211014115325.PDF (~541 KB).exe
Size

673KB
MD5

4f669e786a4926722cbf1216dbb487d3
SHA1

87b699108881c6dbb4ba90c3c27ce81338f562b9
SHA256

0fe5396f1321fd696b415cb353e4b0d28c06168d2cbbae07bf9ff047accb9698
SHA512

8aa3ae09026b07ff82fffd94efdf2135f6a605cd0c65915ca46e8340cdce5b629a45431e4ddf271b4a177e7123863058c61889a9e342bef6c8827509189e6d46

Score

10^/10

xloader pufi loader rat suricata

Malware Config

Extracted

Family

xloader

Version

2.5

Campaign

pufi

C2

http://www.homestechs.com/pufi/

Decoy

fusiongroupgames.net

hugevari.com

rebeccagriffiths.com

trocaoferta.com

theslashapp.com

codezonesoftware.xyz

sottocommunications.com

minicreators.online

course2millions.com

hfm5n1dhkjqwpe.xyz

xlab-ub.com

silvanaribeirocake.com

thefabinteriordesign.com

mg-leadership.com

petbort.com

ndust.net

203040302.xyz

jakital.com

shophuunghia.info

rednacionaldejuecesrd.net

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
behavioral3/memory/288-63-0x000000000041D450-mapping.dmp	xloader
behavioral3/memory/288-62-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral3/memory/1360-71-0x0000000000080000-0x00000000000A9000-memory.dmp	xloader

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

1196 cmd.exe

pid	process
1196	cmd.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

doc17981120211014115325.PDF (~541 KB).exedoc17981120211014115325.PDF (~541 KB).exewlanext.exe

description	pid	process	target process
PID 1720 set thread context of 288	1720	doc17981120211014115325.PDF (~541 KB).exe	doc17981120211014115325.PDF (~541 KB).exe
PID 288 set thread context of 1400	288	doc17981120211014115325.PDF (~541 KB).exe	Explorer.EXE
PID 1360 set thread context of 1400	1360	wlanext.exe	Explorer.EXE

Suspicious behavior: EnumeratesProcesses 54 IoCs

Processes:

doc17981120211014115325.PDF (~541 KB).exewlanext.exe

pid	process
288	doc17981120211014115325.PDF (~541 KB).exe
288	doc17981120211014115325.PDF (~541 KB).exe
1360	wlanext.exe
1360	wlanext.exe
1360	wlanext.exe
1360	wlanext.exe
1360	wlanext.exe
1360	wlanext.exe
1360	wlanext.exe
1360	wlanext.exe
1360	wlanext.exe
1360	wlanext.exe
1360	wlanext.exe
1360	wlanext.exe
1360	wlanext.exe
1360	wlanext.exe
1360	wlanext.exe
1360	wlanext.exe
1360	wlanext.exe
1360	wlanext.exe
1360	wlanext.exe
1360	wlanext.exe
1360	wlanext.exe
1360	wlanext.exe
1360	wlanext.exe
1360	wlanext.exe
1360	wlanext.exe
1360	wlanext.exe
1360	wlanext.exe
1360	wlanext.exe
1360	wlanext.exe
1360	wlanext.exe
1360	wlanext.exe
1360	wlanext.exe
1360	wlanext.exe
1360	wlanext.exe
1360	wlanext.exe
1360	wlanext.exe
1360	wlanext.exe
1360	wlanext.exe
1360	wlanext.exe
1360	wlanext.exe
1360	wlanext.exe
1360	wlanext.exe
1360	wlanext.exe
1360	wlanext.exe
1360	wlanext.exe
1360	wlanext.exe
1360	wlanext.exe
1360	wlanext.exe
1360	wlanext.exe
1360	wlanext.exe
1360	wlanext.exe
1360	wlanext.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

1400 Explorer.EXE

pid	process
1400	Explorer.EXE

Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

doc17981120211014115325.PDF (~541 KB).exewlanext.exe

pid	process
288	doc17981120211014115325.PDF (~541 KB).exe
288	doc17981120211014115325.PDF (~541 KB).exe
288	doc17981120211014115325.PDF (~541 KB).exe
1360	wlanext.exe
1360	wlanext.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

doc17981120211014115325.PDF (~541 KB).exewlanext.exeExplorer.EXE

description	pid	process
Token: SeDebugPrivilege	288	doc17981120211014115325.PDF (~541 KB).exe
Token: SeDebugPrivilege	1360	wlanext.exe
Token: SeShutdownPrivilege	1400	Explorer.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1400 Explorer.EXE
1400 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1400 Explorer.EXE
1400 Explorer.EXE

pid	process
1400	Explorer.EXE
1400	Explorer.EXE

pid	process
1400	Explorer.EXE
1400	Explorer.EXE

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

doc17981120211014115325.PDF (~541 KB).exeExplorer.EXEwlanext.exe

description	pid	process	target process
PID 1720 wrote to memory of 288	1720	doc17981120211014115325.PDF (~541 KB).exe	doc17981120211014115325.PDF (~541 KB).exe
PID 1720 wrote to memory of 288	1720	doc17981120211014115325.PDF (~541 KB).exe	doc17981120211014115325.PDF (~541 KB).exe
PID 1720 wrote to memory of 288	1720	doc17981120211014115325.PDF (~541 KB).exe	doc17981120211014115325.PDF (~541 KB).exe
PID 1720 wrote to memory of 288	1720	doc17981120211014115325.PDF (~541 KB).exe	doc17981120211014115325.PDF (~541 KB).exe
PID 1720 wrote to memory of 288	1720	doc17981120211014115325.PDF (~541 KB).exe	doc17981120211014115325.PDF (~541 KB).exe
PID 1720 wrote to memory of 288	1720	doc17981120211014115325.PDF (~541 KB).exe	doc17981120211014115325.PDF (~541 KB).exe
PID 1720 wrote to memory of 288	1720	doc17981120211014115325.PDF (~541 KB).exe	doc17981120211014115325.PDF (~541 KB).exe
PID 1400 wrote to memory of 1360	1400	Explorer.EXE	wlanext.exe
PID 1400 wrote to memory of 1360	1400	Explorer.EXE	wlanext.exe
PID 1400 wrote to memory of 1360	1400	Explorer.EXE	wlanext.exe
PID 1400 wrote to memory of 1360	1400	Explorer.EXE	wlanext.exe
PID 1360 wrote to memory of 1196	1360	wlanext.exe	cmd.exe
PID 1360 wrote to memory of 1196	1360	wlanext.exe	cmd.exe
PID 1360 wrote to memory of 1196	1360	wlanext.exe	cmd.exe
PID 1360 wrote to memory of 1196	1360	wlanext.exe	cmd.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:1400

C:\Users\Admin\AppData\Local\Temp\0. 20211019 Spec Samples Sheet\doc17981120211014115325.PDF (~541 KB).exe
"C:\Users\Admin\AppData\Local\Temp\0. 20211019 Spec Samples Sheet\doc17981120211014115325.PDF (~541 KB).exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1720

C:\Users\Admin\AppData\Local\Temp\0. 20211019 Spec Samples Sheet\doc17981120211014115325.PDF (~541 KB).exe
"C:\Users\Admin\AppData\Local\Temp\0. 20211019 Spec Samples Sheet\doc17981120211014115325.PDF (~541 KB).exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:288

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:1360

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\0. 20211019 Spec Samples Sheet\doc17981120211014115325.PDF (~541 KB).exe"
3⤵
- Deletes itself
PID:1196

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

memory/288-63-0x000000000041D450-mapping.dmp

Download
memory/288-65-0x0000000000C20000-0x0000000000F23000-memory.dmp

Filesize
3.0MB

Download
memory/288-66-0x0000000000250000-0x0000000000261000-memory.dmp

Filesize
68KB

Download
memory/288-62-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/288-60-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/288-61-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/1196-69-0x0000000000000000-mapping.dmp

Download
memory/1360-68-0x0000000000000000-mapping.dmp

Download
memory/1360-71-0x0000000000080000-0x00000000000A9000-memory.dmp

Filesize
164KB

Download
memory/1360-70-0x0000000000A70000-0x0000000000A86000-memory.dmp

Filesize
88KB

Download
memory/1360-72-0x0000000002020000-0x0000000002323000-memory.dmp

Filesize
3.0MB

Download
memory/1360-73-0x0000000000920000-0x00000000009B0000-memory.dmp

Filesize
576KB

Download
memory/1400-67-0x0000000004740000-0x0000000004808000-memory.dmp

Filesize
800KB

Download
memory/1400-74-0x0000000006950000-0x0000000006A21000-memory.dmp

Filesize
836KB

Download
memory/1720-59-0x0000000005C00000-0x0000000005C4A000-memory.dmp

Filesize
296KB

Download
memory/1720-58-0x00000000003A0000-0x00000000003A7000-memory.dmp

Filesize
28KB

Download
memory/1720-57-0x0000000000520000-0x0000000000521000-memory.dmp

Filesize
4KB

Download
memory/1720-54-0x00000000008D0000-0x00000000008D1000-memory.dmp

Filesize
4KB

Download
memory/1720-56-0x00000000751A1000-0x00000000751A3000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads