xloader | 3123e4c92cd4d6941422414f9ecb143d1710df6218fb1195930cddb714cdac4b

General

Target

vbc.exe
Size

597KB
MD5

1bb71f860cac16c4c91c54c3c3265bda
SHA1

fd4e4d8c5ca9ee17440d8ba313964ee1f8d689b5
SHA256

c9619641b9ca07b139cc64d223eadad4731fcbfce7e0653ce4583b4ea05a686d
SHA512

15c40a03d2f6904fad34d34c3448491eb5b6e40246e3a1296c1f366d0a3337570ce94e2b1cb44bf09b6e7e5c18ce54c1c06f802a15c79430ccb1e603be2e1171
SSDEEP

12288:srV9sI1blVffLr7oMvuHo8HPrZG94oVMXDcqC/QVI17S:89sI9zE2So8HPoWhlZVw7

Score

10^/10

xloader njhr discovery loader rat

Malware Config

Extracted

Family

xloader

Version

2.3

Campaign

njhr

Decoy

kyyx666.com

chicasgunsboutique.com

effectivevip.com

xvideoapps.com

mythree-informationupdates.com

concrete-cleaners.com

zxywxmr.com

runreach.com

khoemanh.club

basecampmedics.com

alloneart.com

thepeoplesgauntlet.com

pinkinomanbeauty.com

level60media.com

master.recipes

acadlearning.com

1001voltas.com

bakegeeks.com

fontaine-escargots.com

lushlobes.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/2788-14-0x0000000000400000-0x0000000000428000-memory.dmp	xloader
behavioral1/memory/2788-18-0x0000000000400000-0x0000000000428000-memory.dmp	xloader
behavioral1/memory/2012-23-0x0000000000080000-0x00000000000A8000-memory.dmp	xloader

Deletes itself 1 IoCs

pid	Process
2016	cmd.exe

Uses the VBS compiler for execution 1 TTPs

Command and Scripting Interpreter
T1059

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2504 set thread context of 2788	2504	vbc.exe	32
PID 2788 set thread context of 1184	2788	vbc.exe	21
PID 2012 set thread context of 1184	2012	wininit.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	vbc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wininit.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
2788	vbc.exe
2788	vbc.exe
2012	wininit.exe
2012	wininit.exe
2012	wininit.exe
2012	wininit.exe
2012	wininit.exe
2012	wininit.exe
2012	wininit.exe
2012	wininit.exe
2012	wininit.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
2788	vbc.exe
2788	vbc.exe
2788	vbc.exe
2012	wininit.exe
2012	wininit.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2788	vbc.exe
Token: SeDebugPrivilege	2012	wininit.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2504 wrote to memory of 2788	2504	vbc.exe	32
PID 2504 wrote to memory of 2788	2504	vbc.exe	32
PID 2504 wrote to memory of 2788	2504	vbc.exe	32
PID 2504 wrote to memory of 2788	2504	vbc.exe	32
PID 2504 wrote to memory of 2788	2504	vbc.exe	32
PID 2504 wrote to memory of 2788	2504	vbc.exe	32
PID 2504 wrote to memory of 2788	2504	vbc.exe	32
PID 1184 wrote to memory of 2012	1184	Explorer.EXE	33
PID 1184 wrote to memory of 2012	1184	Explorer.EXE	33
PID 1184 wrote to memory of 2012	1184	Explorer.EXE	33
PID 1184 wrote to memory of 2012	1184	Explorer.EXE	33
PID 2012 wrote to memory of 2016	2012	wininit.exe	34
PID 2012 wrote to memory of 2016	2012	wininit.exe	34
PID 2012 wrote to memory of 2016	2012	wininit.exe	34
PID 2012 wrote to memory of 2016	2012	wininit.exe	34

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1184
- C:\Users\Admin\AppData\Local\Temp\vbc.exe
  "C:\Users\Admin\AppData\Local\Temp\vbc.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2504
- - C:\Users\Admin\AppData\Local\Temp\vbc.exe
    "C:\Users\Admin\AppData\Local\Temp\vbc.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2788
- C:\Windows\SysWOW64\wininit.exe
  "C:\Windows\SysWOW64\wininit.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:2012
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\vbc.exe"
    3⤵
    - Deletes itself
    - System Location Discovery: System Language Discovery
    PID:2016

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

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/1184-24-0x0000000005060000-0x00000000051F2000-memory.dmp

Filesize
1.6MB

Download
memory/1184-20-0x0000000005060000-0x00000000051F2000-memory.dmp

Filesize
1.6MB

Download
memory/2012-22-0x0000000000670000-0x000000000068A000-memory.dmp

Filesize
104KB

Download
memory/2012-21-0x0000000000670000-0x000000000068A000-memory.dmp

Filesize
104KB

Download
memory/2012-23-0x0000000000080000-0x00000000000A8000-memory.dmp

Filesize
160KB

Download
memory/2504-3-0x0000000074290000-0x000000007497E000-memory.dmp

Filesize
6.9MB

Download
memory/2504-6-0x0000000004630000-0x00000000046AE000-memory.dmp

Filesize
504KB

Download
memory/2504-7-0x0000000000A30000-0x0000000000A66000-memory.dmp

Filesize
216KB

Download
memory/2504-5-0x0000000074290000-0x000000007497E000-memory.dmp

Filesize
6.9MB

Download
memory/2504-4-0x000000007429E000-0x000000007429F000-memory.dmp

Filesize
4KB

Download
memory/2504-0-0x000000007429E000-0x000000007429F000-memory.dmp

Filesize
4KB

Download
memory/2504-2-0x0000000000390000-0x000000000039A000-memory.dmp

Filesize
40KB

Download
memory/2504-15-0x0000000074290000-0x000000007497E000-memory.dmp

Filesize
6.9MB

Download
memory/2504-1-0x0000000001190000-0x000000000122C000-memory.dmp

Filesize
624KB

Download
memory/2788-14-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/2788-18-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/2788-19-0x0000000000260000-0x0000000000270000-memory.dmp

Filesize
64KB

Download
memory/2788-16-0x00000000008C0000-0x0000000000BC3000-memory.dmp

Filesize
3.0MB

Download
memory/2788-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2788-10-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/2788-8-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download

Analysis

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