xloader | efd1897cf1232815bb1f1fbe8496804186d7c48c6bfa05b2dea6bd3bb0b67ed0

General

Target

po.exe
Size

847KB
MD5

5723a775452272c5b0508628a1d94364
SHA1

827e1716937a9579a71cce148e01afda49a18f7c
SHA256

efd1897cf1232815bb1f1fbe8496804186d7c48c6bfa05b2dea6bd3bb0b67ed0
SHA512

4b763ea50bb8160cc92c0b416c9bb80cf6ac6be920f9e5e49b5fde1969c010654d92834897296669d54d3650908a29ed0912e22c71ab5268af76e3c988c89064

Score

10^/10

xloader bsz6 loader persistence rat

Malware Config

Extracted

Family

xloader

Version

2.5

Campaign

bsz6

C2

http://www.hosotructiep.online/bsz6/

Decoy

rn-interior.com

padimo40.com

original-photos.com

gigacode.club

sacarwrap.com

daphne1.com

studyabroadway.com

caddonline.com

medicareadvplans.net

keyuhair.com

ethenea-paris.com

hungryhollow.farm

hirdavatgezegeni.com

biotransmitter.com

vrikshamfinance.com

holzhafen-bodensee.com

houseofbegums.com

dream-mart.tech

csitexas.biz

kitchenalamode.xyz

Signatures

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

Xloader Payload 2 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1508-70-0x0000000072480000-0x00000000724AA000-memory.dmp	xloader
behavioral1/memory/2000-77-0x0000000000130000-0x0000000000159000-memory.dmp	xloader

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

po.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Windows\CurrentVersion\Run\Mqkunt = "C:\\Users\\Public\\tnukqM.url"	po.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

mobsync.exemsdt.exe

description	pid	process	target process
PID 1508 set thread context of 1288	1508	mobsync.exe	Explorer.EXE
PID 2000 set thread context of 1288	2000	msdt.exe	Explorer.EXE

Modifies registry key 1 TTPs 3 IoCs

Modify Registry
T1112

Processes:

reg.exereg.exereg.exe

pid process

1496 reg.exe
1948 reg.exe
1760 reg.exe

pid	process
1496	reg.exe
1948	reg.exe
1760	reg.exe

Suspicious behavior: EnumeratesProcesses 28 IoCs

Processes:

mobsync.exemsdt.exe

pid	process
1508	mobsync.exe
1508	mobsync.exe
2000	msdt.exe
2000	msdt.exe
2000	msdt.exe
2000	msdt.exe
2000	msdt.exe
2000	msdt.exe
2000	msdt.exe
2000	msdt.exe
2000	msdt.exe
2000	msdt.exe
2000	msdt.exe
2000	msdt.exe
2000	msdt.exe
2000	msdt.exe
2000	msdt.exe
2000	msdt.exe
2000	msdt.exe
2000	msdt.exe
2000	msdt.exe
2000	msdt.exe
2000	msdt.exe
2000	msdt.exe
2000	msdt.exe
2000	msdt.exe
2000	msdt.exe
2000	msdt.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

1288 Explorer.EXE
Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

mobsync.exemsdt.exe

pid process

1508 mobsync.exe
1508 mobsync.exe
1508 mobsync.exe
2000 msdt.exe
2000 msdt.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

mobsync.exemsdt.exe

description pid process

Token: SeDebugPrivilege 1508 mobsync.exe
Token: SeDebugPrivilege 2000 msdt.exe

pid	process
1288	Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	1508	mobsync.exe
Token: SeDebugPrivilege	2000	msdt.exe

Suspicious use of WriteProcessMemory 39 IoCs

Processes:

po.execmd.execmd.exeExplorer.EXEcmd.exe

description	pid	process	target process
PID 1224 wrote to memory of 1508	1224	po.exe	mobsync.exe
PID 1224 wrote to memory of 1508	1224	po.exe	mobsync.exe
PID 1224 wrote to memory of 1508	1224	po.exe	mobsync.exe
PID 1224 wrote to memory of 1508	1224	po.exe	mobsync.exe
PID 1224 wrote to memory of 1508	1224	po.exe	mobsync.exe
PID 1224 wrote to memory of 1508	1224	po.exe	mobsync.exe
PID 1224 wrote to memory of 1508	1224	po.exe	mobsync.exe
PID 1224 wrote to memory of 1816	1224	po.exe	cmd.exe
PID 1224 wrote to memory of 1816	1224	po.exe	cmd.exe
PID 1224 wrote to memory of 1816	1224	po.exe	cmd.exe
PID 1224 wrote to memory of 1816	1224	po.exe	cmd.exe
PID 1816 wrote to memory of 1060	1816	cmd.exe	cmd.exe
PID 1816 wrote to memory of 1060	1816	cmd.exe	cmd.exe
PID 1816 wrote to memory of 1060	1816	cmd.exe	cmd.exe
PID 1816 wrote to memory of 1060	1816	cmd.exe	cmd.exe
PID 1060 wrote to memory of 1496	1060	cmd.exe	reg.exe
PID 1060 wrote to memory of 1496	1060	cmd.exe	reg.exe
PID 1060 wrote to memory of 1496	1060	cmd.exe	reg.exe
PID 1060 wrote to memory of 1496	1060	cmd.exe	reg.exe
PID 1060 wrote to memory of 1948	1060	cmd.exe	reg.exe
PID 1060 wrote to memory of 1948	1060	cmd.exe	reg.exe
PID 1060 wrote to memory of 1948	1060	cmd.exe	reg.exe
PID 1060 wrote to memory of 1948	1060	cmd.exe	reg.exe
PID 1060 wrote to memory of 1440	1060	cmd.exe	schtasks.exe
PID 1060 wrote to memory of 1440	1060	cmd.exe	schtasks.exe
PID 1060 wrote to memory of 1440	1060	cmd.exe	schtasks.exe
PID 1060 wrote to memory of 1440	1060	cmd.exe	schtasks.exe
PID 1288 wrote to memory of 2000	1288	Explorer.EXE	msdt.exe
PID 1288 wrote to memory of 2000	1288	Explorer.EXE	msdt.exe
PID 1288 wrote to memory of 2000	1288	Explorer.EXE	msdt.exe
PID 1288 wrote to memory of 2000	1288	Explorer.EXE	msdt.exe
PID 1224 wrote to memory of 1768	1224	po.exe	cmd.exe
PID 1224 wrote to memory of 1768	1224	po.exe	cmd.exe
PID 1224 wrote to memory of 1768	1224	po.exe	cmd.exe
PID 1224 wrote to memory of 1768	1224	po.exe	cmd.exe
PID 1768 wrote to memory of 1760	1768	cmd.exe	reg.exe
PID 1768 wrote to memory of 1760	1768	cmd.exe	reg.exe
PID 1768 wrote to memory of 1760	1768	cmd.exe	reg.exe
PID 1768 wrote to memory of 1760	1768	cmd.exe	reg.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:1288

C:\Users\Admin\AppData\Local\Temp\po.exe
"C:\Users\Admin\AppData\Local\Temp\po.exe"
2⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1224

C:\Windows\SysWOW64\mobsync.exe
C:\Windows\System32\mobsync.exe
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1508

C:\Windows\SysWOW64\cmd.exe
cmd /c ""C:\Users\Public\Trast.bat" "
3⤵
- Suspicious use of WriteProcessMemory
PID:1816

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /K C:\Users\Public\UKO.bat
4⤵
- Suspicious use of WriteProcessMemory
PID:1060

C:\Windows\SysWOW64\reg.exe
reg delete hkcu\Environment /v windir /f
5⤵
- Modifies registry key
PID:1496

C:\Windows\SysWOW64\reg.exe
reg add hkcu\Environment /v windir /d "cmd /c start /min C:\Users\Public\KDECO.bat reg delete hkcu\Environment /v windir /f && REM "
5⤵
- Modifies registry key
PID:1948

C:\Windows\SysWOW64\schtasks.exe
schtasks /Run /TN \Microsoft\Windows\DiskCleanup\SilentCleanup /I
5⤵
PID:1440

C:\Windows\SysWOW64\cmd.exe
cmd /c ""C:\Users\Public\nest.bat" "
3⤵
- Suspicious use of WriteProcessMemory
PID:1768

C:\Windows\SysWOW64\reg.exe
reg delete hkcu\Environment /v windir /f
4⤵
- Modifies registry key
PID:1760

C:\Windows\SysWOW64\msdt.exe
"C:\Windows\SysWOW64\msdt.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:2000

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Public\Trast.bat
MD5
4068c9f69fcd8a171c67f81d4a952a54

SHA1
4d2536a8c28cdcc17465e20d6693fb9e8e713b36

SHA256
24222300c78180b50ed1f8361ba63cb27316ec994c1c9079708a51b4a1a9d810

SHA512
a64f9319acc51fffd0491c74dcd9c9084c2783b82f95727e4bfe387a8528c6dcf68f11418e88f1e133d115daf907549c86dd7ad866b2a7938add5225fbb2811d

Download Submit
C:\Users\Public\UKO.bat
MD5
eaf8d967454c3bbddbf2e05a421411f8

SHA1
6170880409b24de75c2dc3d56a506fbff7f6622c

SHA256
f35f2658455a2e40f151549a7d6465a836c33fa9109e67623916f889849eac56

SHA512
fe5be5c673e99f70c93019d01abb0a29dd2ecf25b2d895190ff551f020c28e7d8f99f65007f440f0f76c5bcac343b2a179a94d190c938ea3b9e1197890a412e9

Download Submit
C:\Users\Public\nest.bat
MD5
8ada51400b7915de2124baaf75e3414c

SHA1
1a7b9db12184ab7fd7fce1c383f9670a00adb081

SHA256
45aa3957c29865260a78f03eef18ae9aebdbf7bea751ecc88be4a799f2bb46c7

SHA512
9afc138157a4565294ca49942579cdb6f5d8084e56f9354738de62b585f4c0fa3e7f2cbc9541827f2084e3ff36c46eed29b46f5dd2444062ffcd05c599992e68

Download Submit
memory/1060-63-0x0000000000000000-mapping.dmp

Download
memory/1224-54-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download
memory/1224-55-0x00000000767F1000-0x00000000767F3000-memory.dmp

Filesize
8KB

Download
memory/1224-53-0x0000000000251000-0x0000000000265000-memory.dmp

Filesize
80KB

Download
memory/1288-83-0x0000000004F90000-0x00000000050AF000-memory.dmp

Filesize
1.1MB

Download
memory/1288-73-0x00000000069A0000-0x0000000006B36000-memory.dmp

Filesize
1.6MB

Download
memory/1440-69-0x0000000000000000-mapping.dmp

Download
memory/1496-65-0x0000000000000000-mapping.dmp

Download
memory/1508-56-0x0000000072480000-0x00000000724AA000-memory.dmp

Filesize
168KB

Download
memory/1508-67-0x00000000000D0000-0x00000000000D1000-memory.dmp

Filesize
4KB

Download
memory/1508-68-0x0000000072480000-0x00000000724AA000-memory.dmp

Filesize
168KB

Download
memory/1508-70-0x0000000072480000-0x00000000724AA000-memory.dmp

Filesize
168KB

Download
memory/1508-72-0x0000000000300000-0x0000000000311000-memory.dmp

Filesize
68KB

Download
memory/1508-71-0x00000000020A0000-0x00000000023A3000-memory.dmp

Filesize
3.0MB

Download
memory/1508-59-0x0000000000000000-mapping.dmp

Download
memory/1508-57-0x00000000000C0000-0x00000000000C1000-memory.dmp

Filesize
4KB

Download
memory/1760-82-0x0000000000000000-mapping.dmp

Download
memory/1768-80-0x0000000000000000-mapping.dmp

Download
memory/1816-61-0x0000000000000000-mapping.dmp

Download
memory/1948-66-0x0000000000000000-mapping.dmp

Download
memory/2000-78-0x0000000002220000-0x0000000002523000-memory.dmp

Filesize
3.0MB

Download
memory/2000-79-0x0000000001FB0000-0x0000000002040000-memory.dmp

Filesize
576KB

Download
memory/2000-76-0x0000000000590000-0x0000000000684000-memory.dmp

Filesize
976KB

Download
memory/2000-77-0x0000000000130000-0x0000000000159000-memory.dmp

Filesize
164KB

Download
memory/2000-74-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads