xloader | 2dcb33954614d11cded983267f1e67bab73b383f846170e34f54bb745b05b995

General

Target

E20210917ML-RFQ.exe
Size

631KB
MD5

4bb97838f22e7d33122a38105b252b9e
SHA1

770a4807a1e32a8fbb765e3540d54c30bdd5c131
SHA256

c507c6ca8c3d71feb2af8d83136736bd2407fef4a26c9e681426be5501d4742c
SHA512

fd23aa8b75501d5a09fcb6c8c4ac2bc7406e0a73a7dc0215b3a1de8a4a31a418bee21fc750335c9de4652e62a7a9a4a409bf110d9a1bc49df9318ab38ba08cb5
SSDEEP

12288:PuXEjNzXgWfqIF/OXH+faNtmh4zNR+fh9rX8UQWObnrV8ZqsPh1r:EWfqIFyCatmINk5pX87WM

Score

10^/10

xloader a6er discovery loader rat

Malware Config

Extracted

Family

xloader

Version

2.5

Campaign

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
Xloader family
xloader

Xloader payload 4 IoCs

rat

resource	yara_rule
behavioral1/memory/2832-14-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral1/memory/2832-18-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral1/memory/2832-23-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral1/memory/2764-29-0x00000000000D0000-0x00000000000F9000-memory.dmp	xloader

Deletes itself 1 IoCs

pid	Process
2108	cmd.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 2844 set thread context of 2832	2844	E20210917ML-RFQ.exe	30
PID 2832 set thread context of 1192	2832	E20210917ML-RFQ.exe	21
PID 2832 set thread context of 1192	2832	E20210917ML-RFQ.exe	21
PID 2764 set thread context of 1192	2764	explorer.exe	21

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	E20210917ML-RFQ.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: EnumeratesProcesses 23 IoCs

pid	Process
2832	E20210917ML-RFQ.exe
2832	E20210917ML-RFQ.exe
2832	E20210917ML-RFQ.exe
2764	explorer.exe
2764	explorer.exe
2764	explorer.exe
2764	explorer.exe
2764	explorer.exe
2764	explorer.exe
2764	explorer.exe
2764	explorer.exe
2764	explorer.exe
2764	explorer.exe
2764	explorer.exe
2764	explorer.exe
2764	explorer.exe
2764	explorer.exe
2764	explorer.exe
2764	explorer.exe
2764	explorer.exe
2764	explorer.exe
2764	explorer.exe
2764	explorer.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
2832	E20210917ML-RFQ.exe
2832	E20210917ML-RFQ.exe
2832	E20210917ML-RFQ.exe
2832	E20210917ML-RFQ.exe
2764	explorer.exe
2764	explorer.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2832	E20210917ML-RFQ.exe
Token: SeDebugPrivilege	2764	explorer.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2844 wrote to memory of 2832	2844	E20210917ML-RFQ.exe	30
PID 2844 wrote to memory of 2832	2844	E20210917ML-RFQ.exe	30
PID 2844 wrote to memory of 2832	2844	E20210917ML-RFQ.exe	30
PID 2844 wrote to memory of 2832	2844	E20210917ML-RFQ.exe	30
PID 2844 wrote to memory of 2832	2844	E20210917ML-RFQ.exe	30
PID 2844 wrote to memory of 2832	2844	E20210917ML-RFQ.exe	30
PID 2844 wrote to memory of 2832	2844	E20210917ML-RFQ.exe	30
PID 1192 wrote to memory of 2764	1192	Explorer.EXE	31
PID 1192 wrote to memory of 2764	1192	Explorer.EXE	31
PID 1192 wrote to memory of 2764	1192	Explorer.EXE	31
PID 1192 wrote to memory of 2764	1192	Explorer.EXE	31
PID 2764 wrote to memory of 2108	2764	explorer.exe	32
PID 2764 wrote to memory of 2108	2764	explorer.exe	32
PID 2764 wrote to memory of 2108	2764	explorer.exe	32
PID 2764 wrote to memory of 2108	2764	explorer.exe	32

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1192
- C:\Users\Admin\AppData\Local\Temp\E20210917ML-RFQ.exe
  "C:\Users\Admin\AppData\Local\Temp\E20210917ML-RFQ.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2844
- - 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:2832
- C:\Windows\SysWOW64\explorer.exe
  "C:\Windows\SysWOW64\explorer.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2764
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\E20210917ML-RFQ.exe"
    3⤵
    - Deletes itself
    - System Location Discovery: System Language Discovery
    PID:2108

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1192-21-0x0000000006BB0000-0x0000000006CD5000-memory.dmp

Filesize
1.1MB

Download
memory/1192-30-0x0000000007690000-0x000000000780F000-memory.dmp

Filesize
1.5MB

Download
memory/1192-20-0x00000000031A0000-0x00000000032A0000-memory.dmp

Filesize
1024KB

Download
memory/1192-25-0x0000000006BB0000-0x0000000006CD5000-memory.dmp

Filesize
1.1MB

Download
memory/1192-26-0x0000000007690000-0x000000000780F000-memory.dmp

Filesize
1.5MB

Download
memory/2764-29-0x00000000000D0000-0x00000000000F9000-memory.dmp

Filesize
164KB

Download
memory/2764-28-0x00000000001E0000-0x0000000000461000-memory.dmp

Filesize
2.5MB

Download
memory/2764-27-0x00000000001E0000-0x0000000000461000-memory.dmp

Filesize
2.5MB

Download
memory/2832-8-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/2832-14-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/2832-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2832-10-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/2832-24-0x00000000002D0000-0x00000000002E1000-memory.dmp

Filesize
68KB

Download
memory/2832-16-0x00000000006E0000-0x00000000009E3000-memory.dmp

Filesize
3.0MB

Download
memory/2832-19-0x0000000000280000-0x0000000000291000-memory.dmp

Filesize
68KB

Download
memory/2832-18-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/2832-23-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/2844-6-0x0000000004E50000-0x0000000004EB6000-memory.dmp

Filesize
408KB

Download
memory/2844-15-0x0000000074900000-0x0000000074FEE000-memory.dmp

Filesize
6.9MB

Download
memory/2844-7-0x00000000006A0000-0x00000000006D4000-memory.dmp

Filesize
208KB

Download
memory/2844-0-0x000000007490E000-0x000000007490F000-memory.dmp

Filesize
4KB

Download
memory/2844-5-0x0000000074900000-0x0000000074FEE000-memory.dmp

Filesize
6.9MB

Download
memory/2844-4-0x000000007490E000-0x000000007490F000-memory.dmp

Filesize
4KB

Download
memory/2844-3-0x0000000000530000-0x000000000053C000-memory.dmp

Filesize
48KB

Download
memory/2844-2-0x0000000074900000-0x0000000074FEE000-memory.dmp

Filesize
6.9MB

Download
memory/2844-1-0x00000000010D0000-0x0000000001174000-memory.dmp

Filesize
656KB

Download

Analysis

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