xloader | bada580efa147660d4042f557622d4f3d3e38b131a17add2c4320cee03636836

General

Target

5f475f3f7c27c744afe9f860d0e0c93c6acabb6eec8a222118a498d0f8816a10.exe
Size

318KB
MD5

7b3ac47b7e0a3b84ae5a4a34c3b37503
SHA1

6b73e3bcff26f7b9d805bdf839271478e10d3aa9
SHA256

5f475f3f7c27c744afe9f860d0e0c93c6acabb6eec8a222118a498d0f8816a10
SHA512

dcb5b2ee9a55376699a733be65f8fdc5f482d2305447c67341577b40aabc9d27b34a76beb328daf3478ecd23e47d2064fb4b419f89cc3d2e0673e0c755d11105
SSDEEP

6144:TxDuIshmUqiRw6gPmFyggTDL40FbL5COzewlSUeGaSH+g:EIJ3hg9OHJCOa4FeGaDg

Score

10^/10

xloader b0ar discovery loader rat

Malware Config

Extracted

Family

xloader

Version

2.5

Campaign

b0ar

Decoy

luckyjangteo.com

iots.top

kavakshop.com

perp.review

innasamudra.com

adclw.net

dinerboard.com

sempionhosting.com

welcome-sber.store

akcgoldenretrievers.com

bay-frame.com

myteethdental108.com

ya-diver.com

liuxuemba.com

knopfluiro.quest

ccaiai.top

centurypropertiespk.com

ministryofpup.com

2chemistry.com

zichtlijn.net

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/2212-12-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral1/memory/2212-15-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral1/memory/2940-22-0x0000000000080000-0x00000000000A9000-memory.dmp	xloader

Executes dropped EXE 2 IoCs

pid	Process
2512	sekfuer.exe
2212	sekfuer.exe

Loads dropped DLL 2 IoCs

pid	Process
1760	5f475f3f7c27c744afe9f860d0e0c93c6acabb6eec8a222118a498d0f8816a10.exe
2512	sekfuer.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2512 set thread context of 2212	2512	sekfuer.exe	31
PID 2212 set thread context of 1284	2212	sekfuer.exe	21
PID 2940 set thread context of 1284	2940	colorcpl.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 4 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	colorcpl.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	5f475f3f7c27c744afe9f860d0e0c93c6acabb6eec8a222118a498d0f8816a10.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sekfuer.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
2212	sekfuer.exe
2212	sekfuer.exe
2940	colorcpl.exe
2940	colorcpl.exe
2940	colorcpl.exe
2940	colorcpl.exe
2940	colorcpl.exe
2940	colorcpl.exe
2940	colorcpl.exe
2940	colorcpl.exe
2940	colorcpl.exe
2940	colorcpl.exe
2940	colorcpl.exe
2940	colorcpl.exe
2940	colorcpl.exe
2940	colorcpl.exe
2940	colorcpl.exe
2940	colorcpl.exe
2940	colorcpl.exe
2940	colorcpl.exe
2940	colorcpl.exe
2940	colorcpl.exe
2940	colorcpl.exe
2940	colorcpl.exe
2940	colorcpl.exe
2940	colorcpl.exe
2940	colorcpl.exe
2940	colorcpl.exe
2940	colorcpl.exe
2940	colorcpl.exe
2940	colorcpl.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
2212	sekfuer.exe
2212	sekfuer.exe
2212	sekfuer.exe
2940	colorcpl.exe
2940	colorcpl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2212	sekfuer.exe
Token: SeDebugPrivilege	2940	colorcpl.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 1760 wrote to memory of 2512	1760	5f475f3f7c27c744afe9f860d0e0c93c6acabb6eec8a222118a498d0f8816a10.exe	30
PID 1760 wrote to memory of 2512	1760	5f475f3f7c27c744afe9f860d0e0c93c6acabb6eec8a222118a498d0f8816a10.exe	30
PID 1760 wrote to memory of 2512	1760	5f475f3f7c27c744afe9f860d0e0c93c6acabb6eec8a222118a498d0f8816a10.exe	30
PID 1760 wrote to memory of 2512	1760	5f475f3f7c27c744afe9f860d0e0c93c6acabb6eec8a222118a498d0f8816a10.exe	30
PID 2512 wrote to memory of 2212	2512	sekfuer.exe	31
PID 2512 wrote to memory of 2212	2512	sekfuer.exe	31
PID 2512 wrote to memory of 2212	2512	sekfuer.exe	31
PID 2512 wrote to memory of 2212	2512	sekfuer.exe	31
PID 2512 wrote to memory of 2212	2512	sekfuer.exe	31
PID 2512 wrote to memory of 2212	2512	sekfuer.exe	31
PID 2512 wrote to memory of 2212	2512	sekfuer.exe	31
PID 1284 wrote to memory of 2940	1284	Explorer.EXE	32
PID 1284 wrote to memory of 2940	1284	Explorer.EXE	32
PID 1284 wrote to memory of 2940	1284	Explorer.EXE	32
PID 1284 wrote to memory of 2940	1284	Explorer.EXE	32
PID 2940 wrote to memory of 3068	2940	colorcpl.exe	33
PID 2940 wrote to memory of 3068	2940	colorcpl.exe	33
PID 2940 wrote to memory of 3068	2940	colorcpl.exe	33
PID 2940 wrote to memory of 3068	2940	colorcpl.exe	33

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1284
- C:\Users\Admin\AppData\Local\Temp\5f475f3f7c27c744afe9f860d0e0c93c6acabb6eec8a222118a498d0f8816a10.exe
  "C:\Users\Admin\AppData\Local\Temp\5f475f3f7c27c744afe9f860d0e0c93c6acabb6eec8a222118a498d0f8816a10.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1760
- - C:\Users\Admin\AppData\Local\Temp\sekfuer.exe
    C:\Users\Admin\AppData\Local\Temp\sekfuer.exe C:\Users\Admin\AppData\Local\Temp\kxvtoctk
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2512
  - - C:\Users\Admin\AppData\Local\Temp\sekfuer.exe
      C:\Users\Admin\AppData\Local\Temp\sekfuer.exe C:\Users\Admin\AppData\Local\Temp\kxvtoctk
      4⤵
      Executes dropped EXE
      Suspicious use of SetThreadContext
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: MapViewOfSection
      Suspicious use of AdjustPrivilegeToken
      PID:2212
- C:\Windows\SysWOW64\colorcpl.exe
  "C:\Windows\SysWOW64\colorcpl.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:2940
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\sekfuer.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3068

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\5no0u0gva98wlri45ov1

Filesize
211KB

MD5
d6b23032a09ffeb6abcde5d358a4a811

SHA1
f38ceb3fb628a218f6e622b664487a5fc7e9cbe5

SHA256
e9c6a985773580b2c3bbce4b42e8bffea84c4fd682588cbf1c8ff4c6a4a2604c

SHA512
a0d379a6426fbb6eb368935fc5fdf0c168ea7742f324cf0dbec2e3987c86ee9967fccad309b3d525bf1f371a66f6d4a843b48a30f8ec9a161a94d052dc9c5c15

Download Submit
C:\Users\Admin\AppData\Local\Temp\kxvtoctk

Filesize
4KB

MD5
03f193756bc6453453b4211edc08b400

SHA1
8d51ca5d3ccbcc6b596ccc318c79e4b041cc7917

SHA256
920d6c6a4ef09c4e3bbc4b9b609bc0992d19dd64d1243e16a030ad31e4c8dc3e

SHA512
b33fd3a30a3f9e19054543f6fc6ed4d7dc730715fc92f4c5a8403ac8f0d4e94a5c5222ffda32dcfed4aa8ce6bf351a59ea6610c819975893bcad2f9b1696bbcd

Download Submit
C:\Users\Admin\AppData\Local\Temp\sekfuer.exe

Filesize
175KB

MD5
726feddb203f26ef36c573c5305d97f8

SHA1
0c88f5fe319fc16f18f924d57837c1cd8e1ddc07

SHA256
6c1038acb3f2815c1e332a37fac58ec85cf3737a6e6792e2dbf6a0a2c0ed00c4

SHA512
23ec28b39d0ab1c6dbc2fc2b9f7331a2610df03492522842517d41c52dffecf92d3ee688612134697495e5184f9ec8ac066e0b092eb637967ea5f220e83dd99a

Download Submit
memory/1284-16-0x0000000000010000-0x0000000000020000-memory.dmp

Filesize
64KB

Download
memory/1284-17-0x00000000067D0000-0x00000000068EC000-memory.dmp

Filesize
1.1MB

Download
memory/1284-23-0x00000000067D0000-0x00000000068EC000-memory.dmp

Filesize
1.1MB

Download
memory/2212-12-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/2212-15-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/2512-9-0x00000000001E0000-0x00000000001E2000-memory.dmp

Filesize
8KB

Download
memory/2940-20-0x0000000000D90000-0x0000000000DA8000-memory.dmp

Filesize
96KB

Download
memory/2940-21-0x0000000000D90000-0x0000000000DA8000-memory.dmp

Filesize
96KB

Download
memory/2940-22-0x0000000000080000-0x00000000000A9000-memory.dmp

Filesize
164KB

Download

Analysis

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