xloader | 50df1fc76a41a970a44ac40efdd0113c599a7091891dc13c25e78abe52a97158

Resubmissions

20-04-2024 01:16

240420-bmxf1sdd8s 10

20-04-2024 01:12

240420-bksp2sdc9s 10

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
20-04-2024 01:16

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General

Target

IMG_38575943.exe
Size

341KB
MD5

2a11ef715093c4429cd05dc3950c7f89
SHA1

3199e3c72fc349d9cce951c2c8830d88a8da4454
SHA256

50df1fc76a41a970a44ac40efdd0113c599a7091891dc13c25e78abe52a97158
SHA512

24f2d7a608d421258334144217e97dccdeb023d5e621774f213eda210a8937df0c7d12cfd02e8c96d5951011d6142a320ca3b40bedb8ac6ad5f95ccc6d3d2d0a
SSDEEP

6144:HqPwmYdAbc0C3LFDDOQmjUi0GL9jDAlPMKpPbd6j62AeI4KR0VoFtDFF7g:HqPwmYdAbc0CboQmjIGN6Pzd6j6/eWtU

Score

10^/10

xloader c6si loader rat

Malware Config

Extracted

Family

xloader

Version

2.5

Campaign

c6si

Decoy

tristateinc.construction

americanscaregroundstexas.com

kanimisoshiru.com

wihling.com

fishcheekstosa.com

parentsfuid.com

greenstandmarket.com

fc8fla8kzq.com

gametwist-83.club

jobsncvs.com

directrealtysells.com

avida2015.com

conceptasite.net

arkaneattire.com

indev-mobility.info

2160centurypark412.com

valefloor.com

septembership.com

stackflix.com

jimc0sales.net

Signatures

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

Xloader payload 5 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/2620-18-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral1/memory/2620-13-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral1/memory/2620-23-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral1/memory/1228-28-0x0000000000080000-0x00000000000A9000-memory.dmp	xloader
behavioral1/memory/1228-30-0x0000000000080000-0x00000000000A9000-memory.dmp	xloader

Deletes itself 1 IoCs

Processes:

cmd.exe

pid	Process
312	cmd.exe

Suspicious use of SetThreadContext 4 IoCs

Processes:

IMG_38575943.exeIMG_38575943.exechkdsk.exe

description	pid	Process	procid_target
PID 1656 set thread context of 2620	1656	IMG_38575943.exe	28
PID 2620 set thread context of 1188	2620	IMG_38575943.exe	21
PID 2620 set thread context of 1188	2620	IMG_38575943.exe	21
PID 1228 set thread context of 1188	1228	chkdsk.exe	21

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

Suspicious behavior: EnumeratesProcesses 24 IoCs

Processes:

IMG_38575943.exechkdsk.exe

pid	Process
2620	IMG_38575943.exe
2620	IMG_38575943.exe
2620	IMG_38575943.exe
1228	chkdsk.exe
1228	chkdsk.exe
1228	chkdsk.exe
1228	chkdsk.exe
1228	chkdsk.exe
1228	chkdsk.exe
1228	chkdsk.exe
1228	chkdsk.exe
1228	chkdsk.exe
1228	chkdsk.exe
1228	chkdsk.exe
1228	chkdsk.exe
1228	chkdsk.exe
1228	chkdsk.exe
1228	chkdsk.exe
1228	chkdsk.exe
1228	chkdsk.exe
1228	chkdsk.exe
1228	chkdsk.exe
1228	chkdsk.exe
1228	chkdsk.exe

Suspicious behavior: MapViewOfSection 6 IoCs

Processes:

IMG_38575943.exechkdsk.exe

pid	Process
2620	IMG_38575943.exe
2620	IMG_38575943.exe
2620	IMG_38575943.exe
2620	IMG_38575943.exe
1228	chkdsk.exe
1228	chkdsk.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

IMG_38575943.exechkdsk.exe

description	pid	Process
Token: SeDebugPrivilege	2620	IMG_38575943.exe
Token: SeDebugPrivilege	1228	chkdsk.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

IMG_38575943.exeExplorer.EXEchkdsk.exe

description	pid	Process	procid_target
PID 1656 wrote to memory of 2620	1656	IMG_38575943.exe	28
PID 1656 wrote to memory of 2620	1656	IMG_38575943.exe	28
PID 1656 wrote to memory of 2620	1656	IMG_38575943.exe	28
PID 1656 wrote to memory of 2620	1656	IMG_38575943.exe	28
PID 1656 wrote to memory of 2620	1656	IMG_38575943.exe	28
PID 1656 wrote to memory of 2620	1656	IMG_38575943.exe	28
PID 1656 wrote to memory of 2620	1656	IMG_38575943.exe	28
PID 1188 wrote to memory of 1228	1188	Explorer.EXE	50
PID 1188 wrote to memory of 1228	1188	Explorer.EXE	50
PID 1188 wrote to memory of 1228	1188	Explorer.EXE	50
PID 1188 wrote to memory of 1228	1188	Explorer.EXE	50
PID 1228 wrote to memory of 312	1228	chkdsk.exe	53
PID 1228 wrote to memory of 312	1228	chkdsk.exe	53
PID 1228 wrote to memory of 312	1228	chkdsk.exe	53
PID 1228 wrote to memory of 312	1228	chkdsk.exe	53

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1188
- C:\Users\Admin\AppData\Local\Temp\IMG_38575943.exe
  "C:\Users\Admin\AppData\Local\Temp\IMG_38575943.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:1656
- - C:\Users\Admin\AppData\Local\Temp\IMG_38575943.exe
    "C:\Users\Admin\AppData\Local\Temp\IMG_38575943.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2620
- C:\Windows\SysWOW64\autochk.exe
  "C:\Windows\SysWOW64\autochk.exe"
  2⤵
  PID:2464
- C:\Windows\SysWOW64\autochk.exe
  "C:\Windows\SysWOW64\autochk.exe"
  2⤵
  PID:2568
- C:\Windows\SysWOW64\autochk.exe
  "C:\Windows\SysWOW64\autochk.exe"
  2⤵
  PID:2352
- C:\Windows\SysWOW64\autochk.exe
  "C:\Windows\SysWOW64\autochk.exe"
  2⤵
  PID:2348
- C:\Windows\SysWOW64\autochk.exe
  "C:\Windows\SysWOW64\autochk.exe"
  2⤵
  PID:2372
- C:\Windows\SysWOW64\autochk.exe
  "C:\Windows\SysWOW64\autochk.exe"
  2⤵
  PID:2404
- C:\Windows\SysWOW64\autochk.exe
  "C:\Windows\SysWOW64\autochk.exe"
  2⤵
  PID:2424
- C:\Windows\SysWOW64\autochk.exe
  "C:\Windows\SysWOW64\autochk.exe"
  2⤵
  PID:2472
- C:\Windows\SysWOW64\autochk.exe
  "C:\Windows\SysWOW64\autochk.exe"
  2⤵
  PID:2776
- C:\Windows\SysWOW64\autochk.exe
  "C:\Windows\SysWOW64\autochk.exe"
  2⤵
  PID:1456
- C:\Windows\SysWOW64\autochk.exe
  "C:\Windows\SysWOW64\autochk.exe"
  2⤵
  PID:2780
- C:\Windows\SysWOW64\autochk.exe
  "C:\Windows\SysWOW64\autochk.exe"
  2⤵
  PID:2888
- C:\Windows\SysWOW64\autochk.exe
  "C:\Windows\SysWOW64\autochk.exe"
  2⤵
  PID:3040
- C:\Windows\SysWOW64\autochk.exe
  "C:\Windows\SysWOW64\autochk.exe"
  2⤵
  PID:2788
- C:\Windows\SysWOW64\autochk.exe
  "C:\Windows\SysWOW64\autochk.exe"
  2⤵
  PID:2792
- C:\Windows\SysWOW64\autochk.exe
  "C:\Windows\SysWOW64\autochk.exe"
  2⤵
  PID:2324
- C:\Windows\SysWOW64\autochk.exe
  "C:\Windows\SysWOW64\autochk.exe"
  2⤵
  PID:764
- C:\Windows\SysWOW64\autochk.exe
  "C:\Windows\SysWOW64\autochk.exe"
  2⤵
  PID:2244
- C:\Windows\SysWOW64\autochk.exe
  "C:\Windows\SysWOW64\autochk.exe"
  2⤵
  PID:624
- C:\Windows\SysWOW64\autochk.exe
  "C:\Windows\SysWOW64\autochk.exe"
  2⤵
  PID:2096
- C:\Windows\SysWOW64\autochk.exe
  "C:\Windows\SysWOW64\autochk.exe"
  2⤵
  PID:856
- 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:1228
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\IMG_38575943.exe"
    3⤵
    - Deletes itself
    PID:312

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1188-40-0x00000000043B0000-0x0000000004445000-memory.dmp

Filesize
596KB

Download
memory/1188-25-0x00000000070E0000-0x0000000007262000-memory.dmp

Filesize
1.5MB

Download
memory/1188-34-0x00000000070E0000-0x0000000007262000-memory.dmp

Filesize
1.5MB

Download
memory/1188-36-0x00000000043B0000-0x0000000004445000-memory.dmp

Filesize
596KB

Download
memory/1188-37-0x00000000043B0000-0x0000000004445000-memory.dmp

Filesize
596KB

Download
memory/1188-20-0x0000000005070000-0x0000000005195000-memory.dmp

Filesize
1.1MB

Download
memory/1188-17-0x0000000003030000-0x0000000003130000-memory.dmp

Filesize
1024KB

Download
memory/1228-32-0x0000000002260000-0x00000000022F0000-memory.dmp

Filesize
576KB

Download
memory/1228-27-0x0000000000790000-0x0000000000797000-memory.dmp

Filesize
28KB

Download
memory/1228-28-0x0000000000080000-0x00000000000A9000-memory.dmp

Filesize
164KB

Download
memory/1228-26-0x0000000000790000-0x0000000000797000-memory.dmp

Filesize
28KB

Download
memory/1228-29-0x0000000002530000-0x0000000002833000-memory.dmp

Filesize
3.0MB

Download
memory/1228-30-0x0000000000080000-0x00000000000A9000-memory.dmp

Filesize
164KB

Download
memory/1656-2-0x0000000004FE0000-0x0000000005020000-memory.dmp

Filesize
256KB

Download
memory/1656-0-0x0000000001200000-0x000000000125C000-memory.dmp

Filesize
368KB

Download
memory/1656-3-0x0000000000930000-0x000000000093C000-memory.dmp

Filesize
48KB

Download
memory/1656-14-0x0000000074810000-0x0000000074EFE000-memory.dmp

Filesize
6.9MB

Download
memory/1656-1-0x0000000074810000-0x0000000074EFE000-memory.dmp

Filesize
6.9MB

Download
memory/1656-4-0x0000000074810000-0x0000000074EFE000-memory.dmp

Filesize
6.9MB

Download
memory/1656-5-0x0000000004FE0000-0x0000000005020000-memory.dmp

Filesize
256KB

Download
memory/1656-6-0x0000000000E00000-0x0000000000E5E000-memory.dmp

Filesize
376KB

Download
memory/2620-15-0x00000000009C0000-0x0000000000CC3000-memory.dmp

Filesize
3.0MB

Download
memory/2620-23-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/2620-24-0x00000000001D0000-0x00000000001E1000-memory.dmp

Filesize
68KB

Download
memory/2620-7-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/2620-9-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/2620-11-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2620-13-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/2620-19-0x0000000000190000-0x00000000001A1000-memory.dmp

Filesize
68KB

Download
memory/2620-18-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download