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
behavioral1/memory/1560-66-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral1/memory/1560-67-0x000000000041D430-mapping.dmp	xloader
behavioral1/memory/1732-74-0x0000000000080000-0x00000000000A9000-memory.dmp	xloader

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

1724 cmd.exe

pid	process
1724	cmd.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

E20210917ML-RFQ.exeE20210917ML-RFQ.exeNAPSTAT.EXE

description	pid	process	target process
PID 1840 set thread context of 1560	1840	E20210917ML-RFQ.exe	E20210917ML-RFQ.exe
PID 1560 set thread context of 1200	1560	E20210917ML-RFQ.exe	Explorer.EXE
PID 1732 set thread context of 1200	1732	NAPSTAT.EXE	Explorer.EXE

Suspicious behavior: EnumeratesProcesses 27 IoCs

Processes:

E20210917ML-RFQ.exeE20210917ML-RFQ.exeNAPSTAT.EXE

pid	process
1840	E20210917ML-RFQ.exe
1840	E20210917ML-RFQ.exe
1560	E20210917ML-RFQ.exe
1560	E20210917ML-RFQ.exe
1732	NAPSTAT.EXE
1732	NAPSTAT.EXE
1732	NAPSTAT.EXE
1732	NAPSTAT.EXE
1732	NAPSTAT.EXE
1732	NAPSTAT.EXE
1732	NAPSTAT.EXE
1732	NAPSTAT.EXE
1732	NAPSTAT.EXE
1732	NAPSTAT.EXE
1732	NAPSTAT.EXE
1732	NAPSTAT.EXE
1732	NAPSTAT.EXE
1732	NAPSTAT.EXE
1732	NAPSTAT.EXE
1732	NAPSTAT.EXE
1732	NAPSTAT.EXE
1732	NAPSTAT.EXE
1732	NAPSTAT.EXE
1732	NAPSTAT.EXE
1732	NAPSTAT.EXE
1732	NAPSTAT.EXE
1732	NAPSTAT.EXE

Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

E20210917ML-RFQ.exeNAPSTAT.EXE

pid process

1560 E20210917ML-RFQ.exe
1560 E20210917ML-RFQ.exe
1560 E20210917ML-RFQ.exe
1732 NAPSTAT.EXE
1732 NAPSTAT.EXE

pid	process
1560	E20210917ML-RFQ.exe
1560	E20210917ML-RFQ.exe
1560	E20210917ML-RFQ.exe
1732	NAPSTAT.EXE
1732	NAPSTAT.EXE

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

E20210917ML-RFQ.exeE20210917ML-RFQ.exeNAPSTAT.EXE

description	pid	process
Token: SeDebugPrivilege	1840	E20210917ML-RFQ.exe
Token: SeDebugPrivilege	1560	E20210917ML-RFQ.exe
Token: SeDebugPrivilege	1732	NAPSTAT.EXE

Suspicious use of FindShellTrayWindow 4 IoCs

Processes:

Explorer.EXE

pid process

1200 Explorer.EXE
1200 Explorer.EXE
1200 Explorer.EXE
1200 Explorer.EXE
Suspicious use of SendNotifyMessage 4 IoCs

Processes:

Explorer.EXE

pid process

1200 Explorer.EXE
1200 Explorer.EXE
1200 Explorer.EXE
1200 Explorer.EXE

pid	process
1200	Explorer.EXE
1200	Explorer.EXE
1200	Explorer.EXE
1200	Explorer.EXE

pid	process
1200	Explorer.EXE
1200	Explorer.EXE
1200	Explorer.EXE
1200	Explorer.EXE

Suspicious use of WriteProcessMemory 19 IoCs

Processes:

E20210917ML-RFQ.exeExplorer.EXENAPSTAT.EXE

description	pid	process	target process
PID 1840 wrote to memory of 1836	1840	E20210917ML-RFQ.exe	E20210917ML-RFQ.exe
PID 1840 wrote to memory of 1836	1840	E20210917ML-RFQ.exe	E20210917ML-RFQ.exe
PID 1840 wrote to memory of 1836	1840	E20210917ML-RFQ.exe	E20210917ML-RFQ.exe
PID 1840 wrote to memory of 1836	1840	E20210917ML-RFQ.exe	E20210917ML-RFQ.exe
PID 1840 wrote to memory of 1560	1840	E20210917ML-RFQ.exe	E20210917ML-RFQ.exe
PID 1840 wrote to memory of 1560	1840	E20210917ML-RFQ.exe	E20210917ML-RFQ.exe
PID 1840 wrote to memory of 1560	1840	E20210917ML-RFQ.exe	E20210917ML-RFQ.exe
PID 1840 wrote to memory of 1560	1840	E20210917ML-RFQ.exe	E20210917ML-RFQ.exe
PID 1840 wrote to memory of 1560	1840	E20210917ML-RFQ.exe	E20210917ML-RFQ.exe
PID 1840 wrote to memory of 1560	1840	E20210917ML-RFQ.exe	E20210917ML-RFQ.exe
PID 1840 wrote to memory of 1560	1840	E20210917ML-RFQ.exe	E20210917ML-RFQ.exe
PID 1200 wrote to memory of 1732	1200	Explorer.EXE	NAPSTAT.EXE
PID 1200 wrote to memory of 1732	1200	Explorer.EXE	NAPSTAT.EXE
PID 1200 wrote to memory of 1732	1200	Explorer.EXE	NAPSTAT.EXE
PID 1200 wrote to memory of 1732	1200	Explorer.EXE	NAPSTAT.EXE
PID 1732 wrote to memory of 1724	1732	NAPSTAT.EXE	cmd.exe
PID 1732 wrote to memory of 1724	1732	NAPSTAT.EXE	cmd.exe
PID 1732 wrote to memory of 1724	1732	NAPSTAT.EXE	cmd.exe
PID 1732 wrote to memory of 1724	1732	NAPSTAT.EXE	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1200
- C:\Users\Admin\AppData\Local\Temp\E20210917ML-RFQ.exe
  "C:\Users\Admin\AppData\Local\Temp\E20210917ML-RFQ.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1840
- - C:\Users\Admin\AppData\Local\Temp\E20210917ML-RFQ.exe
    "C:\Users\Admin\AppData\Local\Temp\E20210917ML-RFQ.exe"
    3⤵
    PID:1836
- - 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:1560
- C:\Windows\SysWOW64\NAPSTAT.EXE
  "C:\Windows\SysWOW64\NAPSTAT.EXE"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1732
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\E20210917ML-RFQ.exe"
    3⤵
    - Deletes itself
    PID:1724

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

memory/1200-77-0x0000000004A30000-0x0000000004B2A000-memory.dmp

Filesize
1000KB

Download
memory/1200-70-0x00000000044E0000-0x0000000004595000-memory.dmp

Filesize
724KB

Download
memory/1560-68-0x0000000000840000-0x0000000000B43000-memory.dmp

Filesize
3.0MB

Download
memory/1560-69-0x0000000000220000-0x0000000000231000-memory.dmp

Filesize
68KB

Download
memory/1560-66-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/1560-67-0x000000000041D430-mapping.dmp

Download
memory/1724-72-0x0000000000000000-mapping.dmp

Download
memory/1732-74-0x0000000000080000-0x00000000000A9000-memory.dmp

Filesize
164KB

Download
memory/1732-71-0x0000000000000000-mapping.dmp

Download
memory/1732-73-0x0000000000410000-0x0000000000456000-memory.dmp

Filesize
280KB

Download
memory/1732-75-0x0000000001F10000-0x0000000002213000-memory.dmp

Filesize
3.0MB

Download
memory/1732-76-0x0000000001DD0000-0x0000000001E60000-memory.dmp

Filesize
576KB

Download
memory/1732-78-0x00000000757C1000-0x00000000757C3000-memory.dmp

Filesize
8KB

Download
memory/1840-65-0x0000000000A10000-0x0000000000A3F000-memory.dmp

Filesize
188KB

Download
memory/1840-64-0x0000000005A50000-0x0000000005AAF000-memory.dmp

Filesize
380KB

Download
memory/1840-63-0x0000000000250000-0x0000000000257000-memory.dmp

Filesize
28KB

Download
memory/1840-60-0x0000000000DC0000-0x0000000000DC1000-memory.dmp

Filesize
4KB

Download
memory/1840-62-0x0000000004F40000-0x0000000004F41000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads