xloader | 2dcb33954614d11cded983267f1e67bab73b383f846170e34f54bb745b05b995

General

Target

E20210917ML-RFQ.exe
Size

631KB
MD5

4bb97838f22e7d33122a38105b252b9e
SHA1

770a4807a1e32a8fbb765e3540d54c30bdd5c131
SHA256

c507c6ca8c3d71feb2af8d83136736bd2407fef4a26c9e681426be5501d4742c
SHA512

fd23aa8b75501d5a09fcb6c8c4ac2bc7406e0a73a7dc0215b3a1de8a4a31a418bee21fc750335c9de4652e62a7a9a4a409bf110d9a1bc49df9318ab38ba08cb5

Score

10^/10

xloader a6er loader rat suricata

Malware Config

Extracted

Family

xloader

Version

2.5

Campaign

a6er

C2

http://www.revivalgomghw.xyz/a6er/

Decoy

floetic.club

deepspotters.com

tibo-dev.tech

kcmade.xyz

haulseattle.com

ceroli-dolci.com

chenkaichuangke.com

citycloudconsulting.online

rusunmedical.com

ingeborg-art.com

asianm.art

private-clicks.com

metalcorpperu.com

beautifulingodseyes.com

phutungxenangnguoi.com

shots-photo.com

wirlessjuicers.com

sadyrossiiural.com

jiho9jye.xyz

molilii.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/1408-124-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral2/memory/1408-125-0x000000000041D430-mapping.dmp	xloader
behavioral2/memory/1588-134-0x0000000002A30000-0x0000000002A59000-memory.dmp	xloader

Suspicious use of SetThreadContext 3 IoCs

Processes:

E20210917ML-RFQ.exeE20210917ML-RFQ.exemsiexec.exe

description	pid	process	target process
PID 1832 set thread context of 1408	1832	E20210917ML-RFQ.exe	E20210917ML-RFQ.exe
PID 1408 set thread context of 3052	1408	E20210917ML-RFQ.exe	Explorer.EXE
PID 1588 set thread context of 3052	1588	msiexec.exe	Explorer.EXE

Modifies registry class 2 IoCs

Processes:

Explorer.EXE

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance	Explorer.EXE
Key created	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance	Explorer.EXE

Suspicious behavior: EnumeratesProcesses 44 IoCs

Processes:

E20210917ML-RFQ.exemsiexec.exe

pid	process
1408	E20210917ML-RFQ.exe
1408	E20210917ML-RFQ.exe
1408	E20210917ML-RFQ.exe
1408	E20210917ML-RFQ.exe
1588	msiexec.exe
1588	msiexec.exe
1588	msiexec.exe
1588	msiexec.exe
1588	msiexec.exe
1588	msiexec.exe
1588	msiexec.exe
1588	msiexec.exe
1588	msiexec.exe
1588	msiexec.exe
1588	msiexec.exe
1588	msiexec.exe
1588	msiexec.exe
1588	msiexec.exe
1588	msiexec.exe
1588	msiexec.exe
1588	msiexec.exe
1588	msiexec.exe
1588	msiexec.exe
1588	msiexec.exe
1588	msiexec.exe
1588	msiexec.exe
1588	msiexec.exe
1588	msiexec.exe
1588	msiexec.exe
1588	msiexec.exe
1588	msiexec.exe
1588	msiexec.exe
1588	msiexec.exe
1588	msiexec.exe
1588	msiexec.exe
1588	msiexec.exe
1588	msiexec.exe
1588	msiexec.exe
1588	msiexec.exe
1588	msiexec.exe
1588	msiexec.exe
1588	msiexec.exe
1588	msiexec.exe
1588	msiexec.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

3052 Explorer.EXE
Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

E20210917ML-RFQ.exemsiexec.exe

pid process

1408 E20210917ML-RFQ.exe
1408 E20210917ML-RFQ.exe
1408 E20210917ML-RFQ.exe
1588 msiexec.exe
1588 msiexec.exe

pid	process
3052	Explorer.EXE

Suspicious use of AdjustPrivilegeToken 14 IoCs

Processes:

E20210917ML-RFQ.exeExplorer.EXEmsiexec.exe

description	pid	process
Token: SeDebugPrivilege	1408	E20210917ML-RFQ.exe
Token: SeShutdownPrivilege	3052	Explorer.EXE
Token: SeCreatePagefilePrivilege	3052	Explorer.EXE
Token: SeShutdownPrivilege	3052	Explorer.EXE
Token: SeCreatePagefilePrivilege	3052	Explorer.EXE
Token: SeShutdownPrivilege	3052	Explorer.EXE
Token: SeCreatePagefilePrivilege	3052	Explorer.EXE
Token: SeShutdownPrivilege	3052	Explorer.EXE
Token: SeCreatePagefilePrivilege	3052	Explorer.EXE
Token: SeShutdownPrivilege	3052	Explorer.EXE
Token: SeCreatePagefilePrivilege	3052	Explorer.EXE
Token: SeShutdownPrivilege	3052	Explorer.EXE
Token: SeCreatePagefilePrivilege	3052	Explorer.EXE
Token: SeDebugPrivilege	1588	msiexec.exe

Suspicious use of FindShellTrayWindow 8 IoCs

Processes:

Explorer.EXE

pid process

3052 Explorer.EXE
3052 Explorer.EXE
3052 Explorer.EXE
3052 Explorer.EXE
3052 Explorer.EXE
3052 Explorer.EXE
3052 Explorer.EXE
3052 Explorer.EXE

pid	process
3052	Explorer.EXE
3052	Explorer.EXE
3052	Explorer.EXE
3052	Explorer.EXE
3052	Explorer.EXE
3052	Explorer.EXE
3052	Explorer.EXE
3052	Explorer.EXE

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

E20210917ML-RFQ.exeExplorer.EXEmsiexec.exe

description	pid	process	target process
PID 1832 wrote to memory of 1408	1832	E20210917ML-RFQ.exe	E20210917ML-RFQ.exe
PID 1832 wrote to memory of 1408	1832	E20210917ML-RFQ.exe	E20210917ML-RFQ.exe
PID 1832 wrote to memory of 1408	1832	E20210917ML-RFQ.exe	E20210917ML-RFQ.exe
PID 1832 wrote to memory of 1408	1832	E20210917ML-RFQ.exe	E20210917ML-RFQ.exe
PID 1832 wrote to memory of 1408	1832	E20210917ML-RFQ.exe	E20210917ML-RFQ.exe
PID 1832 wrote to memory of 1408	1832	E20210917ML-RFQ.exe	E20210917ML-RFQ.exe
PID 3052 wrote to memory of 1588	3052	Explorer.EXE	msiexec.exe
PID 3052 wrote to memory of 1588	3052	Explorer.EXE	msiexec.exe
PID 3052 wrote to memory of 1588	3052	Explorer.EXE	msiexec.exe
PID 1588 wrote to memory of 2840	1588	msiexec.exe	cmd.exe
PID 1588 wrote to memory of 2840	1588	msiexec.exe	cmd.exe
PID 1588 wrote to memory of 2840	1588	msiexec.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Modifies registry class
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:3052

C:\Users\Admin\AppData\Local\Temp\E20210917ML-RFQ.exe
"C:\Users\Admin\AppData\Local\Temp\E20210917ML-RFQ.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1832

C:\Users\Admin\AppData\Local\Temp\E20210917ML-RFQ.exe
"C:\Users\Admin\AppData\Local\Temp\E20210917ML-RFQ.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1408

C:\Windows\SysWOW64\msiexec.exe
"C:\Windows\SysWOW64\msiexec.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1588

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\E20210917ML-RFQ.exe"
3⤵
PID:2840

Network

MITRE ATT&CK Matrix

Replay Monitor

Loading Replay Monitor...

Downloads

memory/1408-124-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/1408-127-0x0000000001650000-0x0000000001661000-memory.dmp

Filesize
68KB

Download
memory/1408-126-0x0000000001170000-0x0000000001490000-memory.dmp

Filesize
3.1MB

Download
memory/1408-125-0x000000000041D430-mapping.dmp

Download
memory/1588-136-0x0000000004200000-0x0000000004290000-memory.dmp

Filesize
576KB

Download
memory/1588-134-0x0000000002A30000-0x0000000002A59000-memory.dmp

Filesize
164KB

Download
memory/1588-135-0x0000000004540000-0x0000000004860000-memory.dmp

Filesize
3.1MB

Download
memory/1588-133-0x0000000000A10000-0x0000000000A22000-memory.dmp

Filesize
72KB

Download
memory/1588-129-0x0000000000000000-mapping.dmp

Download
memory/1832-120-0x0000000008D70000-0x0000000008D71000-memory.dmp

Filesize
4KB

Download
memory/1832-123-0x0000000009160000-0x000000000918F000-memory.dmp

Filesize
188KB

Download
memory/1832-122-0x00000000090F0000-0x000000000914F000-memory.dmp

Filesize
380KB

Download
memory/1832-121-0x0000000005A60000-0x0000000005A67000-memory.dmp

Filesize
28KB

Download
memory/1832-114-0x0000000000E30000-0x0000000000E31000-memory.dmp

Filesize
4KB

Download
memory/1832-119-0x00000000031C0000-0x0000000003252000-memory.dmp

Filesize
584KB

Download
memory/1832-118-0x00000000031E0000-0x00000000031E1000-memory.dmp

Filesize
4KB

Download
memory/1832-117-0x0000000005800000-0x0000000005801000-memory.dmp

Filesize
4KB

Download
memory/1832-116-0x0000000005D00000-0x0000000005D01000-memory.dmp

Filesize
4KB

Download
memory/2840-132-0x0000000000000000-mapping.dmp

Download
memory/3052-128-0x0000000006A90000-0x0000000006C23000-memory.dmp

Filesize
1.6MB

Download
memory/3052-137-0x0000000003120000-0x00000000031ED000-memory.dmp

Filesize
820KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix

Replay Monitor

Loading Replay Monitor...

Downloads