xloader | f1619d4c36e975b2cc880b6a72db99282df847ebb72dc6446950dbcbf4d0f487

General

Target

po-1.exe
Size

854KB
MD5

991d571971fc0fe01211ef089fa905cc
SHA1

a5415e363e44e6586ed8f36a73ce2eb5bf4ed4fd
SHA256

f1619d4c36e975b2cc880b6a72db99282df847ebb72dc6446950dbcbf4d0f487
SHA512

c71e2498e6c252ccb10f96499258e28878e39c873025123815eb9565bcad101d90b7b51e74bcaa58926b426f4618fb2fb6db90b93bfb4508f903e43475edbee5

Score

10^/10

xloader k8b5 loader rat suricata

Malware Config

Extracted

Family

xloader

Version

2.3

Campaign

k8b5

C2

http://www.chongzhi365.com/k8b5/

Decoy

sardamedicals.com

reelectkendavis4council.com

coreconsultation.com

fajarazhary.com

mybitearner.com

brightpet.info

voicewithchoice.com

bailbondscompany.xyz

7133333333.com

delights.info

gawlvegdr.icu

sdqhpm.com

we2savvyok.com

primallifeathlete.com

gdsinglecell.com

isokineticmachines.com

smartneckrelax.com

gardenvintage.com

hiphopvolume.com

medicapoint.com

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
behavioral1/memory/764-66-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral1/memory/764-67-0x000000000041D0B0-mapping.dmp	xloader
behavioral1/memory/1164-74-0x0000000000080000-0x00000000000A9000-memory.dmp	xloader

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

1476 cmd.exe

pid	process
1476	cmd.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

po-1.exepo-1.execmmon32.exe

description	pid	process	target process
PID 1920 set thread context of 764	1920	po-1.exe	po-1.exe
PID 764 set thread context of 1252	764	po-1.exe	Explorer.EXE
PID 1164 set thread context of 1252	1164	cmmon32.exe	Explorer.EXE

Suspicious behavior: EnumeratesProcesses 25 IoCs

Processes:

po-1.exepo-1.execmmon32.exe

pid	process
1920	po-1.exe
1920	po-1.exe
764	po-1.exe
764	po-1.exe
1164	cmmon32.exe
1164	cmmon32.exe
1164	cmmon32.exe
1164	cmmon32.exe
1164	cmmon32.exe
1164	cmmon32.exe
1164	cmmon32.exe
1164	cmmon32.exe
1164	cmmon32.exe
1164	cmmon32.exe
1164	cmmon32.exe
1164	cmmon32.exe
1164	cmmon32.exe
1164	cmmon32.exe
1164	cmmon32.exe
1164	cmmon32.exe
1164	cmmon32.exe
1164	cmmon32.exe
1164	cmmon32.exe
1164	cmmon32.exe
1164	cmmon32.exe

Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

po-1.execmmon32.exe

pid process

764 po-1.exe
764 po-1.exe
764 po-1.exe
1164 cmmon32.exe
1164 cmmon32.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

po-1.exepo-1.execmmon32.exe

description pid process

Token: SeDebugPrivilege 1920 po-1.exe
Token: SeDebugPrivilege 764 po-1.exe
Token: SeDebugPrivilege 1164 cmmon32.exe
Suspicious use of FindShellTrayWindow 4 IoCs

Processes:

Explorer.EXE

pid process

1252 Explorer.EXE
1252 Explorer.EXE
1252 Explorer.EXE
1252 Explorer.EXE
Suspicious use of SendNotifyMessage 4 IoCs

Processes:

Explorer.EXE

pid process

1252 Explorer.EXE
1252 Explorer.EXE
1252 Explorer.EXE
1252 Explorer.EXE

pid	process
764	po-1.exe
764	po-1.exe
764	po-1.exe
1164	cmmon32.exe
1164	cmmon32.exe

description	pid	process
Token: SeDebugPrivilege	1920	po-1.exe
Token: SeDebugPrivilege	764	po-1.exe
Token: SeDebugPrivilege	1164	cmmon32.exe

pid	process
1252	Explorer.EXE
1252	Explorer.EXE
1252	Explorer.EXE
1252	Explorer.EXE

pid	process
1252	Explorer.EXE
1252	Explorer.EXE
1252	Explorer.EXE
1252	Explorer.EXE

Suspicious use of WriteProcessMemory 19 IoCs

Processes:

po-1.exeExplorer.EXEcmmon32.exe

description	pid	process	target process
PID 1920 wrote to memory of 268	1920	po-1.exe	po-1.exe
PID 1920 wrote to memory of 268	1920	po-1.exe	po-1.exe
PID 1920 wrote to memory of 268	1920	po-1.exe	po-1.exe
PID 1920 wrote to memory of 268	1920	po-1.exe	po-1.exe
PID 1920 wrote to memory of 764	1920	po-1.exe	po-1.exe
PID 1920 wrote to memory of 764	1920	po-1.exe	po-1.exe
PID 1920 wrote to memory of 764	1920	po-1.exe	po-1.exe
PID 1920 wrote to memory of 764	1920	po-1.exe	po-1.exe
PID 1920 wrote to memory of 764	1920	po-1.exe	po-1.exe
PID 1920 wrote to memory of 764	1920	po-1.exe	po-1.exe
PID 1920 wrote to memory of 764	1920	po-1.exe	po-1.exe
PID 1252 wrote to memory of 1164	1252	Explorer.EXE	cmmon32.exe
PID 1252 wrote to memory of 1164	1252	Explorer.EXE	cmmon32.exe
PID 1252 wrote to memory of 1164	1252	Explorer.EXE	cmmon32.exe
PID 1252 wrote to memory of 1164	1252	Explorer.EXE	cmmon32.exe
PID 1164 wrote to memory of 1476	1164	cmmon32.exe	cmd.exe
PID 1164 wrote to memory of 1476	1164	cmmon32.exe	cmd.exe
PID 1164 wrote to memory of 1476	1164	cmmon32.exe	cmd.exe
PID 1164 wrote to memory of 1476	1164	cmmon32.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1252

C:\Users\Admin\AppData\Local\Temp\po-1.exe
"C:\Users\Admin\AppData\Local\Temp\po-1.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1920

C:\Users\Admin\AppData\Local\Temp\po-1.exe
"{path}"
3⤵
PID:268

C:\Users\Admin\AppData\Local\Temp\po-1.exe
"{path}"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:764

C:\Windows\SysWOW64\cmmon32.exe
"C:\Windows\SysWOW64\cmmon32.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1164

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\po-1.exe"
3⤵
- Deletes itself
PID:1476

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

memory/764-66-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/764-69-0x0000000000130000-0x0000000000140000-memory.dmp

Filesize
64KB

Download
memory/764-68-0x0000000000770000-0x0000000000A73000-memory.dmp

Filesize
3.0MB

Download
memory/764-67-0x000000000041D0B0-mapping.dmp

Download
memory/1164-74-0x0000000000080000-0x00000000000A9000-memory.dmp

Filesize
164KB

Download
memory/1164-71-0x0000000000000000-mapping.dmp

Download
memory/1164-75-0x0000000001F90000-0x0000000002293000-memory.dmp

Filesize
3.0MB

Download
memory/1164-73-0x0000000000530000-0x000000000053D000-memory.dmp

Filesize
52KB

Download
memory/1164-76-0x0000000000930000-0x00000000009BF000-memory.dmp

Filesize
572KB

Download
memory/1252-70-0x0000000006AA0000-0x0000000006BA4000-memory.dmp

Filesize
1.0MB

Download
memory/1252-77-0x0000000006BB0000-0x0000000006CB4000-memory.dmp

Filesize
1.0MB

Download
memory/1476-72-0x0000000000000000-mapping.dmp

Download
memory/1920-65-0x0000000000DD0000-0x0000000000E0F000-memory.dmp

Filesize
252KB

Download
memory/1920-64-0x0000000004FB0000-0x0000000005041000-memory.dmp

Filesize
580KB

Download
memory/1920-63-0x0000000000290000-0x000000000029E000-memory.dmp

Filesize
56KB

Download
memory/1920-62-0x00000000070B0000-0x00000000070B1000-memory.dmp

Filesize
4KB

Download
memory/1920-60-0x0000000000FD0000-0x0000000000FD1000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads