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
behavioral4/memory/3540-124-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral4/memory/3540-125-0x000000000041D450-mapping.dmp	xloader
behavioral4/memory/2868-132-0x0000000000360000-0x0000000000389000-memory.dmp	xloader

Suspicious use of SetThreadContext 3 IoCs

Processes:

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

description	pid	process	target process
PID 3284 set thread context of 3540	3284	doc17981120211014115325.PDF (~541 KB).exe	doc17981120211014115325.PDF (~541 KB).exe
PID 3540 set thread context of 3032	3540	doc17981120211014115325.PDF (~541 KB).exe	Explorer.EXE
PID 2868 set thread context of 3032	2868	mstsc.exe	Explorer.EXE

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

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

pid	process
3540	doc17981120211014115325.PDF (~541 KB).exe
3540	doc17981120211014115325.PDF (~541 KB).exe
3540	doc17981120211014115325.PDF (~541 KB).exe
3540	doc17981120211014115325.PDF (~541 KB).exe
2868	mstsc.exe
2868	mstsc.exe
2868	mstsc.exe
2868	mstsc.exe
2868	mstsc.exe
2868	mstsc.exe
2868	mstsc.exe
2868	mstsc.exe
2868	mstsc.exe
2868	mstsc.exe
2868	mstsc.exe
2868	mstsc.exe
2868	mstsc.exe
2868	mstsc.exe
2868	mstsc.exe
2868	mstsc.exe
2868	mstsc.exe
2868	mstsc.exe
2868	mstsc.exe
2868	mstsc.exe
2868	mstsc.exe
2868	mstsc.exe
2868	mstsc.exe
2868	mstsc.exe
2868	mstsc.exe
2868	mstsc.exe
2868	mstsc.exe
2868	mstsc.exe
2868	mstsc.exe
2868	mstsc.exe
2868	mstsc.exe
2868	mstsc.exe
2868	mstsc.exe
2868	mstsc.exe
2868	mstsc.exe
2868	mstsc.exe
2868	mstsc.exe
2868	mstsc.exe
2868	mstsc.exe
2868	mstsc.exe
2868	mstsc.exe
2868	mstsc.exe
2868	mstsc.exe
2868	mstsc.exe
2868	mstsc.exe
2868	mstsc.exe
2868	mstsc.exe
2868	mstsc.exe
2868	mstsc.exe
2868	mstsc.exe
2868	mstsc.exe
2868	mstsc.exe
2868	mstsc.exe
2868	mstsc.exe
2868	mstsc.exe
2868	mstsc.exe
2868	mstsc.exe
2868	mstsc.exe
2868	mstsc.exe
2868	mstsc.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

3032 Explorer.EXE

pid	process
3032	Explorer.EXE

Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

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

pid	process
3540	doc17981120211014115325.PDF (~541 KB).exe
3540	doc17981120211014115325.PDF (~541 KB).exe
3540	doc17981120211014115325.PDF (~541 KB).exe
2868	mstsc.exe
2868	mstsc.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

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

description	pid	process
Token: SeDebugPrivilege	3540	doc17981120211014115325.PDF (~541 KB).exe
Token: SeDebugPrivilege	2868	mstsc.exe
Token: SeShutdownPrivilege	3032	Explorer.EXE
Token: SeCreatePagefilePrivilege	3032	Explorer.EXE

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

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

description	pid	process	target process
PID 3284 wrote to memory of 3540	3284	doc17981120211014115325.PDF (~541 KB).exe	doc17981120211014115325.PDF (~541 KB).exe
PID 3284 wrote to memory of 3540	3284	doc17981120211014115325.PDF (~541 KB).exe	doc17981120211014115325.PDF (~541 KB).exe
PID 3284 wrote to memory of 3540	3284	doc17981120211014115325.PDF (~541 KB).exe	doc17981120211014115325.PDF (~541 KB).exe
PID 3284 wrote to memory of 3540	3284	doc17981120211014115325.PDF (~541 KB).exe	doc17981120211014115325.PDF (~541 KB).exe
PID 3284 wrote to memory of 3540	3284	doc17981120211014115325.PDF (~541 KB).exe	doc17981120211014115325.PDF (~541 KB).exe
PID 3284 wrote to memory of 3540	3284	doc17981120211014115325.PDF (~541 KB).exe	doc17981120211014115325.PDF (~541 KB).exe
PID 3032 wrote to memory of 2868	3032	Explorer.EXE	mstsc.exe
PID 3032 wrote to memory of 2868	3032	Explorer.EXE	mstsc.exe
PID 3032 wrote to memory of 2868	3032	Explorer.EXE	mstsc.exe
PID 2868 wrote to memory of 1804	2868	mstsc.exe	cmd.exe
PID 2868 wrote to memory of 1804	2868	mstsc.exe	cmd.exe
PID 2868 wrote to memory of 1804	2868	mstsc.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3032

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:3284

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:3540

C:\Windows\SysWOW64\mstsc.exe
"C:\Windows\SysWOW64\mstsc.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2868

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\0. 20211019 Spec Samples Sheet\doc17981120211014115325.PDF (~541 KB).exe"
3⤵
PID:1804

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

memory/1804-133-0x0000000000000000-mapping.dmp

Download
memory/2868-135-0x0000000000FD0000-0x0000000001060000-memory.dmp

Filesize
576KB

Download
memory/2868-134-0x0000000004890000-0x0000000004BB0000-memory.dmp

Filesize
3.1MB

Download
memory/2868-132-0x0000000000360000-0x0000000000389000-memory.dmp

Filesize
164KB

Download
memory/2868-131-0x0000000001190000-0x000000000148C000-memory.dmp

Filesize
3.0MB

Download
memory/2868-130-0x0000000000000000-mapping.dmp

Download
memory/3032-129-0x0000000005BE0000-0x0000000005D26000-memory.dmp

Filesize
1.3MB

Download
memory/3032-136-0x00000000024C0000-0x0000000002581000-memory.dmp

Filesize
772KB

Download
memory/3284-121-0x0000000005DC0000-0x0000000005DC7000-memory.dmp

Filesize
28KB

Download
memory/3284-123-0x0000000008CA0000-0x0000000008CEA000-memory.dmp

Filesize
296KB

Download
memory/3284-122-0x0000000008CF0000-0x0000000008CF1000-memory.dmp

Filesize
4KB

Download
memory/3284-115-0x00000000006F0000-0x00000000006F1000-memory.dmp

Filesize
4KB

Download
memory/3284-120-0x0000000005000000-0x00000000054FE000-memory.dmp

Filesize
5.0MB

Download
memory/3284-119-0x0000000004FD0000-0x0000000004FD1000-memory.dmp

Filesize
4KB

Download
memory/3284-118-0x0000000005000000-0x0000000005001000-memory.dmp

Filesize
4KB

Download
memory/3284-117-0x0000000005500000-0x0000000005501000-memory.dmp

Filesize
4KB

Download
memory/3540-125-0x000000000041D450-mapping.dmp

Download
memory/3540-128-0x0000000001460000-0x0000000001471000-memory.dmp

Filesize
68KB

Download
memory/3540-127-0x0000000001580000-0x00000000018A0000-memory.dmp

Filesize
3.1MB

Download
memory/3540-124-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads