xloader | c43a9d3d87d5ce17e61de74587b9a1e4aa0250aae1fa6dde4e392e6de187b096

Analysis

max time kernel
192s
max time network
201s
platform
windows10-2004_x64
resource
win10v2004-20220414-en
submitted
12-05-2022 16:46

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General

Target

vbc.exe
Size

446KB
MD5

71895780eaa4fe577e5d406cb84e150e
SHA1

e798fb18a9ddf2510cdbc536dd96144661ca8ea8
SHA256

c43a9d3d87d5ce17e61de74587b9a1e4aa0250aae1fa6dde4e392e6de187b096
SHA512

d78eeff6df29a1f3a6e2366746fbbf1fa58595ed3ddbf491d9e5bdb34aa060306b219c916ff4e39bb3c35a6a9f4700753515067d531bcc774f5303fa6b1ed3fd

Score

10^/10

xloader a2c8 loader persistence rat suricata

Malware Config

Extracted

Family

xloader

Version

2.5

Campaign

a2c8

Decoy

sethdukes.online

hustl-hk.com

alienspacebabes.com

yitongbag.com

adlichoob.com

wejust5.com

wwwsnapfinancial.com

patriotcapitalgroupllc.com

divaconnectionbuild.com

adventureventures.net

jaromer.net

closureservices.com

sdc-english.com

fleet-lab.com

gtgits.com

clinicaorion.com

deleaderainfluenceur.com

honghuamach.net

638661.com

sleepgenies.info

Signatures

Xloader
Xloader is a rebranded version of Formbook malware.
loader xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata

Xloader Payload 3 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/628-136-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral2/memory/628-139-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral2/memory/552-145-0x0000000001100000-0x0000000001129000-memory.dmp	xloader

Blocklisted process makes network request 2 IoCs

Processes:

cscript.exe

flow	pid	Process
64	552	cscript.exe
81	552	cscript.exe

Executes dropped EXE 2 IoCs

Processes:

pkqvhvquh.exepkqvhvquh.exe

pid	Process
1440	pkqvhvquh.exe
628	pkqvhvquh.exe

Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

pkqvhvquh.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\lfrlfiiuq = "C:\\Users\\Admin\\AppData\\Roaming\\ofhxtuqkrc\\mfmfycmde.exe"	pkqvhvquh.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

pkqvhvquh.exepkqvhvquh.execscript.exe

description	pid	Process	procid_target
PID 1440 set thread context of 628	1440	pkqvhvquh.exe	82
PID 628 set thread context of 3076	628	pkqvhvquh.exe	47
PID 552 set thread context of 3076	552	cscript.exe	47

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 62 IoCs

Processes:

pkqvhvquh.execscript.exe

pid	Process
628	pkqvhvquh.exe
628	pkqvhvquh.exe
628	pkqvhvquh.exe
628	pkqvhvquh.exe
552	cscript.exe
552	cscript.exe
552	cscript.exe
552	cscript.exe
552	cscript.exe
552	cscript.exe
552	cscript.exe
552	cscript.exe
552	cscript.exe
552	cscript.exe
552	cscript.exe
552	cscript.exe
552	cscript.exe
552	cscript.exe
552	cscript.exe
552	cscript.exe
552	cscript.exe
552	cscript.exe
552	cscript.exe
552	cscript.exe
552	cscript.exe
552	cscript.exe
552	cscript.exe
552	cscript.exe
552	cscript.exe
552	cscript.exe
552	cscript.exe
552	cscript.exe
552	cscript.exe
552	cscript.exe
552	cscript.exe
552	cscript.exe
552	cscript.exe
552	cscript.exe
552	cscript.exe
552	cscript.exe
552	cscript.exe
552	cscript.exe
552	cscript.exe
552	cscript.exe
552	cscript.exe
552	cscript.exe
552	cscript.exe
552	cscript.exe
552	cscript.exe
552	cscript.exe
552	cscript.exe
552	cscript.exe
552	cscript.exe
552	cscript.exe
552	cscript.exe
552	cscript.exe
552	cscript.exe
552	cscript.exe
552	cscript.exe
552	cscript.exe
552	cscript.exe
552	cscript.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid	Process
3076	Explorer.EXE

Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

pkqvhvquh.execscript.exe

pid	Process
628	pkqvhvquh.exe
628	pkqvhvquh.exe
628	pkqvhvquh.exe
552	cscript.exe
552	cscript.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

pkqvhvquh.execscript.exe

description	pid	Process
Token: SeDebugPrivilege	628	pkqvhvquh.exe
Token: SeDebugPrivilege	552	cscript.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

vbc.exepkqvhvquh.exeExplorer.EXEcscript.exe

description	pid	Process	procid_target
PID 2616 wrote to memory of 1440	2616	vbc.exe	80
PID 2616 wrote to memory of 1440	2616	vbc.exe	80
PID 2616 wrote to memory of 1440	2616	vbc.exe	80
PID 1440 wrote to memory of 628	1440	pkqvhvquh.exe	82
PID 1440 wrote to memory of 628	1440	pkqvhvquh.exe	82
PID 1440 wrote to memory of 628	1440	pkqvhvquh.exe	82
PID 1440 wrote to memory of 628	1440	pkqvhvquh.exe	82
PID 1440 wrote to memory of 628	1440	pkqvhvquh.exe	82
PID 1440 wrote to memory of 628	1440	pkqvhvquh.exe	82
PID 3076 wrote to memory of 552	3076	Explorer.EXE	83
PID 3076 wrote to memory of 552	3076	Explorer.EXE	83
PID 3076 wrote to memory of 552	3076	Explorer.EXE	83
PID 552 wrote to memory of 4792	552	cscript.exe	88
PID 552 wrote to memory of 4792	552	cscript.exe	88
PID 552 wrote to memory of 4792	552	cscript.exe	88

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:3076
- C:\Users\Admin\AppData\Local\Temp\vbc.exe
  "C:\Users\Admin\AppData\Local\Temp\vbc.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2616
- - C:\Users\Admin\AppData\Local\Temp\pkqvhvquh.exe
    C:\Users\Admin\AppData\Local\Temp\pkqvhvquh.exe C:\Users\Admin\AppData\Local\Temp\sfclhvjg
    3⤵
    - Executes dropped EXE
    - Adds Run key to start application
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:1440
  - - C:\Users\Admin\AppData\Local\Temp\pkqvhvquh.exe
      C:\Users\Admin\AppData\Local\Temp\pkqvhvquh.exe C:\Users\Admin\AppData\Local\Temp\sfclhvjg
      4⤵
      Executes dropped EXE
      Suspicious use of SetThreadContext
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: MapViewOfSection
      Suspicious use of AdjustPrivilegeToken
      PID:628
- C:\Windows\SysWOW64\cscript.exe
  "C:\Windows\SysWOW64\cscript.exe"
  2⤵
  - Blocklisted process makes network request
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:552
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\pkqvhvquh.exe"
    3⤵
    PID:4792

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scripting

T1064

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Scripting

T1064

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\dnhag3q4ifcsljk8pz

Filesize
163KB

MD5
a4df8b94280c196485ffd4b96d5096cd

SHA1
c9945b172ca5db6460b795406bc86c17529c47fe

SHA256
ea34fa896c5ec70f9d80f2cf96d681c739f6ea5a26f5d51f90716f91b902d376

SHA512
c46ea9e76262a59d4b34bf533c87baac9316dbe36a1990866c8042ea666410a9d82e03fed333869184b3b8517b906105526a77442525d756752e6c017ec1a02f

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

Filesize
5KB

MD5
8df2b872f8df8935914ac1db60ab1097

SHA1
9d88c7236639324e919e0580a38d1650b1095307

SHA256
50cd513f82edc742cbab4cbd8415b94410d23992bb85709fae0197eb006186f2

SHA512
a85b74e6188e7bc73d7cd801233be27a7e2d515b9ffaf41500629ad52a02644594e6ffad579dca5c5f34a0a25a8216298ae74436ced63f807bc88a046e2c4b56

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

Filesize
5KB

MD5
8df2b872f8df8935914ac1db60ab1097

SHA1
9d88c7236639324e919e0580a38d1650b1095307

SHA256
50cd513f82edc742cbab4cbd8415b94410d23992bb85709fae0197eb006186f2

SHA512
a85b74e6188e7bc73d7cd801233be27a7e2d515b9ffaf41500629ad52a02644594e6ffad579dca5c5f34a0a25a8216298ae74436ced63f807bc88a046e2c4b56

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

Filesize
5KB

MD5
8df2b872f8df8935914ac1db60ab1097

SHA1
9d88c7236639324e919e0580a38d1650b1095307

SHA256
50cd513f82edc742cbab4cbd8415b94410d23992bb85709fae0197eb006186f2

SHA512
a85b74e6188e7bc73d7cd801233be27a7e2d515b9ffaf41500629ad52a02644594e6ffad579dca5c5f34a0a25a8216298ae74436ced63f807bc88a046e2c4b56

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

Filesize
7KB

MD5
2a5a9325a089fc3e74c4d6c82593e284

SHA1
433ffa18cd6ba5979a3d4dc41b9d9bcd9204099c

SHA256
7f46a014400d81509c35e6a8114bf791ae673050f8ab13008917cce00fe98983

SHA512
b5c50a1c5b837338c6332a9397404dfa828ec85534790b1f0728b4b462e873f31f09c4cfa7655255cbbf4840eb89af26007d5b6f5c264e6f40ebb66dd6884cd1

Download Submit
memory/552-143-0x0000000000000000-mapping.dmp

Download
memory/552-147-0x0000000003220000-0x000000000356A000-memory.dmp

Filesize
3.3MB

Download
memory/552-148-0x0000000002F80000-0x0000000003010000-memory.dmp

Filesize
576KB

Download
memory/552-144-0x00000000003F0000-0x0000000000417000-memory.dmp

Filesize
156KB

Download
memory/552-145-0x0000000001100000-0x0000000001129000-memory.dmp

Filesize
164KB

Download
memory/628-136-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/628-139-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/628-141-0x00000000009F0000-0x0000000000A01000-memory.dmp

Filesize
68KB

Download
memory/628-140-0x0000000000AE0000-0x0000000000E2A000-memory.dmp

Filesize
3.3MB

Download
memory/628-135-0x0000000000000000-mapping.dmp

Download
memory/1440-130-0x0000000000000000-mapping.dmp

Download
memory/3076-142-0x00000000083F0000-0x0000000008552000-memory.dmp

Filesize
1.4MB

Download
memory/3076-149-0x00000000086C0000-0x0000000008850000-memory.dmp

Filesize
1.6MB

Download
memory/4792-146-0x0000000000000000-mapping.dmp

Download