xloader | 3a994c7c2e0700b43c5106c4ffc206833cc9acb6c3e5daf1adf99dabde2b08a7

General

Target

SOA May-June 2021.exe
Size

200KB
MD5

d973534dc3a312d0d9c41ac8ec2bc268
SHA1

9238d84eaa796014f88905f8b5b7ca4211b140c2
SHA256

12c961f1b5f752a22c1a3085fc2447749572fbcb35b3c6e46f6fa310b19572b7
SHA512

409f19a5ac8bcf4e3b61e8223bc9d7a65ea7ce02cbd2ff998a84fb5587bc2e2ae9eb477f735c5a750ba0cff93bfd4bb552dae30aef237af5ba959ef1ac6e7b7b
SSDEEP

6144:wBlL/LyHixQWMSrs+THCK+Q3VUe/NgxoX:CpyHixQ1SrsxQlU8Ngu

Score

10^/10

xloader u8u4 discovery loader rat

Malware Config

Extracted

Family

xloader

Version

2.3

Campaign

u8u4

Decoy

directoramannautiyal.com

ledjiliang.com

neowa.xyz

cpsta.online

mythosophia.com

yz0556.com

recruit-job-design.com

elevenwakeschool.com

starkstyles.com

unmundoincierto.com

halfermafia.com

syams.tech

ngobryles.com

amaphanta-online-auctions.com

harmonicdestinations.com

wecircle.chat

rohash.com

boundlessoutdoorfitness.com

lazyacrescharolais.com

retrocoat.com

Signatures

Xloader
Xloader is a rebranded version of Formbook malware.
loader xloader
Xloader family
xloader

Xloader payload 3 IoCs

rat

resource	yara_rule
behavioral1/memory/2840-11-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral1/memory/2840-13-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral1/memory/2724-19-0x00000000000D0000-0x00000000000F9000-memory.dmp	xloader

Deletes itself 1 IoCs

pid	Process
2688	cmd.exe

Loads dropped DLL 2 IoCs

pid	Process
2664	SOA May-June 2021.exe
2664	SOA May-June 2021.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2664 set thread context of 2840	2664	SOA May-June 2021.exe	30
PID 2840 set thread context of 1184	2840	SOA May-June 2021.exe	21
PID 2724 set thread context of 1184	2724	chkdsk.exe	21

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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	SOA May-June 2021.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	chkdsk.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	chkdsk.exe

Suspicious behavior: EnumeratesProcesses 32 IoCs

pid	Process
2840	SOA May-June 2021.exe
2840	SOA May-June 2021.exe
2724	chkdsk.exe
2724	chkdsk.exe
2724	chkdsk.exe
2724	chkdsk.exe
2724	chkdsk.exe
2724	chkdsk.exe
2724	chkdsk.exe
2724	chkdsk.exe
2724	chkdsk.exe
2724	chkdsk.exe
2724	chkdsk.exe
2724	chkdsk.exe
2724	chkdsk.exe
2724	chkdsk.exe
2724	chkdsk.exe
2724	chkdsk.exe
2724	chkdsk.exe
2724	chkdsk.exe
2724	chkdsk.exe
2724	chkdsk.exe
2724	chkdsk.exe
2724	chkdsk.exe
2724	chkdsk.exe
2724	chkdsk.exe
2724	chkdsk.exe
2724	chkdsk.exe
2724	chkdsk.exe
2724	chkdsk.exe
2724	chkdsk.exe
2724	chkdsk.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
2664	SOA May-June 2021.exe
2840	SOA May-June 2021.exe
2840	SOA May-June 2021.exe
2840	SOA May-June 2021.exe
2724	chkdsk.exe
2724	chkdsk.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2840	SOA May-June 2021.exe
Token: SeDebugPrivilege	2724	chkdsk.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 2664 wrote to memory of 2840	2664	SOA May-June 2021.exe	30
PID 2664 wrote to memory of 2840	2664	SOA May-June 2021.exe	30
PID 2664 wrote to memory of 2840	2664	SOA May-June 2021.exe	30
PID 2664 wrote to memory of 2840	2664	SOA May-June 2021.exe	30
PID 2664 wrote to memory of 2840	2664	SOA May-June 2021.exe	30
PID 1184 wrote to memory of 2724	1184	Explorer.EXE	31
PID 1184 wrote to memory of 2724	1184	Explorer.EXE	31
PID 1184 wrote to memory of 2724	1184	Explorer.EXE	31
PID 1184 wrote to memory of 2724	1184	Explorer.EXE	31
PID 2724 wrote to memory of 2688	2724	chkdsk.exe	32
PID 2724 wrote to memory of 2688	2724	chkdsk.exe	32
PID 2724 wrote to memory of 2688	2724	chkdsk.exe	32
PID 2724 wrote to memory of 2688	2724	chkdsk.exe	32

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1184
- C:\Users\Admin\AppData\Local\Temp\SOA May-June 2021.exe
  "C:\Users\Admin\AppData\Local\Temp\SOA May-June 2021.exe"
  2⤵
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:2664
- - C:\Users\Admin\AppData\Local\Temp\SOA May-June 2021.exe
    "C:\Users\Admin\AppData\Local\Temp\SOA May-June 2021.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2840
- C:\Windows\SysWOW64\chkdsk.exe
  "C:\Windows\SysWOW64\chkdsk.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Enumerates system info in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2724
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\SOA May-June 2021.exe"
    3⤵
    - Deletes itself
    - System Location Discovery: System Language Discovery
    PID:2688

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

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

\Users\Admin\AppData\Local\Temp\nsy142D.tmp\System.dll

Filesize
10KB

MD5
56a321bd011112ec5d8a32b2f6fd3231

SHA1
df20e3a35a1636de64df5290ae5e4e7572447f78

SHA256
bb6df93369b498eaa638b0bcdc4bb89f45e9b02ca12d28bcedf4629ea7f5e0f1

SHA512
5354890cbc53ce51081a78c64ba9c4c8c4dc9e01141798c1e916e19c5776dac7c82989fad0f08c73e81aaba332dad81205f90d0663119af45550b97b338b9cc3

Download Submit
memory/1184-14-0x0000000006710000-0x000000000689A000-memory.dmp

Filesize
1.5MB

Download
memory/1184-20-0x0000000006710000-0x000000000689A000-memory.dmp

Filesize
1.5MB

Download
memory/2724-17-0x0000000000BF0000-0x0000000000BF7000-memory.dmp

Filesize
28KB

Download
memory/2724-18-0x0000000000BF0000-0x0000000000BF7000-memory.dmp

Filesize
28KB

Download
memory/2724-19-0x00000000000D0000-0x00000000000F9000-memory.dmp

Filesize
164KB

Download
memory/2840-11-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/2840-13-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download

Analysis

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