xloader | 092556173667d99c032fc3698faa80242ddcc880b9854655c5f619355903c4ae

General

Target

Inquiry-URGENT.exe
Size

617KB
MD5

7c347b3aba43cefc31e91fede356961b
SHA1

58bb9e282a8d6c95941d310a23010718901c58dd
SHA256

c18d5baf727358a8635a51fc7cfb4c3f4c90c78abcecf051feb4540323e98746
SHA512

94b6633784c888527aef5e3f4cba9d03b04118f43c0f6222b2c60e756fdb183fe88e9a9d940b95fb3ac2d85bee4a4a681ab8f77f4de85c9a722c8c8da9eaebe9

Score

10^/10

xloader b5ce loader rat

Malware Config

Extracted

Family

xloader

Version

2.5

Campaign

b5ce

C2

http://www.rheilea.com/b5ce/

Decoy

advellerd.xyz

giasuvina.com

arab-xt-pro.com

ahsltu2ua4.com

trasportesemmanuel.com

kissimmeesoccercup.com

studyengland.com

m2volleyballclub.com

shyuehuan.com

elsml.com

blog-x-history.top

coditeu.com

allattachments.net

vigautruc.com

mentication.com

zambiaedu.xyz

filadelfiacenter.com

avlaborsourceinc.info

tameka-stewart.com

studio-cleo.com

Signatures

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

Xloader Payload 3 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/3480-125-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral2/memory/3480-126-0x000000000041D430-mapping.dmp	xloader
behavioral2/memory/2108-134-0x0000000004910000-0x0000000004939000-memory.dmp	xloader

Suspicious use of SetThreadContext 4 IoCs

Processes:

Inquiry-URGENT.exeInquiry-URGENT.exechkdsk.exe

description	pid	process	target process
PID 1688 set thread context of 3480	1688	Inquiry-URGENT.exe	Inquiry-URGENT.exe
PID 3480 set thread context of 3028	3480	Inquiry-URGENT.exe	Explorer.EXE
PID 3480 set thread context of 3028	3480	Inquiry-URGENT.exe	Explorer.EXE
PID 2108 set thread context of 3028	2108	chkdsk.exe	Explorer.EXE

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry
T1012

System Information Discovery
T1082

Processes:

chkdsk.exe

description ioc process

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

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

Suspicious behavior: EnumeratesProcesses 42 IoCs

Processes:

Inquiry-URGENT.exechkdsk.exe

pid	process
3480	Inquiry-URGENT.exe
3480	Inquiry-URGENT.exe
3480	Inquiry-URGENT.exe
3480	Inquiry-URGENT.exe
3480	Inquiry-URGENT.exe
3480	Inquiry-URGENT.exe
2108	chkdsk.exe
2108	chkdsk.exe
2108	chkdsk.exe
2108	chkdsk.exe
2108	chkdsk.exe
2108	chkdsk.exe
2108	chkdsk.exe
2108	chkdsk.exe
2108	chkdsk.exe
2108	chkdsk.exe
2108	chkdsk.exe
2108	chkdsk.exe
2108	chkdsk.exe
2108	chkdsk.exe
2108	chkdsk.exe
2108	chkdsk.exe
2108	chkdsk.exe
2108	chkdsk.exe
2108	chkdsk.exe
2108	chkdsk.exe
2108	chkdsk.exe
2108	chkdsk.exe
2108	chkdsk.exe
2108	chkdsk.exe
2108	chkdsk.exe
2108	chkdsk.exe
2108	chkdsk.exe
2108	chkdsk.exe
2108	chkdsk.exe
2108	chkdsk.exe
2108	chkdsk.exe
2108	chkdsk.exe
2108	chkdsk.exe
2108	chkdsk.exe
2108	chkdsk.exe
2108	chkdsk.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

3028 Explorer.EXE
Suspicious behavior: MapViewOfSection 6 IoCs

Processes:

Inquiry-URGENT.exechkdsk.exe

pid process

3480 Inquiry-URGENT.exe
3480 Inquiry-URGENT.exe
3480 Inquiry-URGENT.exe
3480 Inquiry-URGENT.exe
2108 chkdsk.exe
2108 chkdsk.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Inquiry-URGENT.exechkdsk.exe

description pid process

Token: SeDebugPrivilege 3480 Inquiry-URGENT.exe
Token: SeDebugPrivilege 2108 chkdsk.exe

pid	process
3028	Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	3480	Inquiry-URGENT.exe
Token: SeDebugPrivilege	2108	chkdsk.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

Inquiry-URGENT.exeExplorer.EXEchkdsk.exe

description	pid	process	target process
PID 1688 wrote to memory of 3480	1688	Inquiry-URGENT.exe	Inquiry-URGENT.exe
PID 1688 wrote to memory of 3480	1688	Inquiry-URGENT.exe	Inquiry-URGENT.exe
PID 1688 wrote to memory of 3480	1688	Inquiry-URGENT.exe	Inquiry-URGENT.exe
PID 1688 wrote to memory of 3480	1688	Inquiry-URGENT.exe	Inquiry-URGENT.exe
PID 1688 wrote to memory of 3480	1688	Inquiry-URGENT.exe	Inquiry-URGENT.exe
PID 1688 wrote to memory of 3480	1688	Inquiry-URGENT.exe	Inquiry-URGENT.exe
PID 3028 wrote to memory of 2108	3028	Explorer.EXE	chkdsk.exe
PID 3028 wrote to memory of 2108	3028	Explorer.EXE	chkdsk.exe
PID 3028 wrote to memory of 2108	3028	Explorer.EXE	chkdsk.exe
PID 2108 wrote to memory of 3752	2108	chkdsk.exe	cmd.exe
PID 2108 wrote to memory of 3752	2108	chkdsk.exe	cmd.exe
PID 2108 wrote to memory of 3752	2108	chkdsk.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:3028
- C:\Users\Admin\AppData\Local\Temp\Inquiry-URGENT.exe
  "C:\Users\Admin\AppData\Local\Temp\Inquiry-URGENT.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:1688
- - C:\Users\Admin\AppData\Local\Temp\Inquiry-URGENT.exe
    "C:\Users\Admin\AppData\Local\Temp\Inquiry-URGENT.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:3480
- C:\Windows\SysWOW64\autochk.exe
  "C:\Windows\SysWOW64\autochk.exe"
  2⤵
  PID:3460
- C:\Windows\SysWOW64\autochk.exe
  "C:\Windows\SysWOW64\autochk.exe"
  2⤵
  PID:3776
- C:\Windows\SysWOW64\autochk.exe
  "C:\Windows\SysWOW64\autochk.exe"
  2⤵
  PID:3624
- C:\Windows\SysWOW64\autochk.exe
  "C:\Windows\SysWOW64\autochk.exe"
  2⤵
  PID:1672
- C:\Windows\SysWOW64\autochk.exe
  "C:\Windows\SysWOW64\autochk.exe"
  2⤵
  PID:1500
- C:\Windows\SysWOW64\chkdsk.exe
  "C:\Windows\SysWOW64\chkdsk.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Enumerates system info in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2108
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\Inquiry-URGENT.exe"
    3⤵
    PID:3752

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1688-124-0x0000000008890000-0x00000000088BC000-memory.dmp

Filesize
176KB

Download
memory/1688-120-0x0000000008300000-0x0000000008301000-memory.dmp

Filesize
4KB

Download
memory/1688-123-0x0000000008820000-0x000000000887C000-memory.dmp

Filesize
368KB

Download
memory/1688-119-0x0000000004C20000-0x0000000004C21000-memory.dmp

Filesize
4KB

Download
memory/1688-117-0x0000000005150000-0x0000000005151000-memory.dmp

Filesize
4KB

Download
memory/1688-121-0x0000000004B60000-0x0000000004BF2000-memory.dmp

Filesize
584KB

Download
memory/1688-122-0x0000000008270000-0x0000000008276000-memory.dmp

Filesize
24KB

Download
memory/1688-115-0x0000000000340000-0x0000000000341000-memory.dmp

Filesize
4KB

Download
memory/1688-118-0x0000000004C50000-0x0000000004C51000-memory.dmp

Filesize
4KB

Download
memory/2108-134-0x0000000004910000-0x0000000004939000-memory.dmp

Filesize
164KB

Download
memory/2108-137-0x0000000005170000-0x0000000005200000-memory.dmp

Filesize
576KB

Download
memory/2108-136-0x0000000005320000-0x0000000005640000-memory.dmp

Filesize
3.1MB

Download
memory/2108-133-0x00000000008A0000-0x00000000008AA000-memory.dmp

Filesize
40KB

Download
memory/2108-132-0x0000000000000000-mapping.dmp

Download
memory/3028-138-0x0000000005670000-0x00000000057DB000-memory.dmp

Filesize
1.4MB

Download
memory/3028-129-0x0000000001030000-0x00000000010FC000-memory.dmp

Filesize
816KB

Download
memory/3028-131-0x0000000005520000-0x000000000566F000-memory.dmp

Filesize
1.3MB

Download
memory/3480-126-0x000000000041D430-mapping.dmp

Download
memory/3480-130-0x00000000036B0000-0x00000000036C1000-memory.dmp

Filesize
68KB

Download
memory/3480-128-0x0000000001880000-0x0000000001891000-memory.dmp

Filesize
68KB

Download
memory/3480-127-0x00000000018D0000-0x0000000001BF0000-memory.dmp

Filesize
3.1MB

Download
memory/3480-125-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/3752-135-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads