xloader | 3085d62628657edccc65a18edda86f253fb86712a4e50b1cf67828bfa2d33e80

General

Target

Invoice pdf.exe
Size

680KB
MD5

3a91f6caa3965066b881d1de7a67f1b9
SHA1

6097fcf7687e0ec485eae2d57cf9b993ab520375
SHA256

3085d62628657edccc65a18edda86f253fb86712a4e50b1cf67828bfa2d33e80
SHA512

516b5704221bc49d607b80bafd6841976019f908869449c97f6a27c2840d43f62c76af2c5e464fb6b3f04079045b95883d3ed7fd684be1a269ec1663ba2b2dfb

Score

10^/10

xloader k8b5 loader rat

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

Xloader Payload 3 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/192-124-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral2/memory/192-125-0x000000000041D0B0-mapping.dmp	xloader
behavioral2/memory/1364-132-0x0000000002A60000-0x0000000002A89000-memory.dmp	xloader

Suspicious use of SetThreadContext 3 IoCs

Processes:

Invoice pdf.exeInvoice pdf.exesystray.exe

description	pid	process	target process
PID 3932 set thread context of 192	3932	Invoice pdf.exe	Invoice pdf.exe
PID 192 set thread context of 3000	192	Invoice pdf.exe	Explorer.EXE
PID 1364 set thread context of 3000	1364	systray.exe	Explorer.EXE

Suspicious behavior: EnumeratesProcesses 42 IoCs

Processes:

Invoice pdf.exeInvoice pdf.exesystray.exe

pid	process
3932	Invoice pdf.exe
3932	Invoice pdf.exe
192	Invoice pdf.exe
192	Invoice pdf.exe
192	Invoice pdf.exe
192	Invoice pdf.exe
1364	systray.exe
1364	systray.exe
1364	systray.exe
1364	systray.exe
1364	systray.exe
1364	systray.exe
1364	systray.exe
1364	systray.exe
1364	systray.exe
1364	systray.exe
1364	systray.exe
1364	systray.exe
1364	systray.exe
1364	systray.exe
1364	systray.exe
1364	systray.exe
1364	systray.exe
1364	systray.exe
1364	systray.exe
1364	systray.exe
1364	systray.exe
1364	systray.exe
1364	systray.exe
1364	systray.exe
1364	systray.exe
1364	systray.exe
1364	systray.exe
1364	systray.exe
1364	systray.exe
1364	systray.exe
1364	systray.exe
1364	systray.exe
1364	systray.exe
1364	systray.exe
1364	systray.exe
1364	systray.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

3000 Explorer.EXE
Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

Invoice pdf.exesystray.exe

pid process

192 Invoice pdf.exe
192 Invoice pdf.exe
192 Invoice pdf.exe
1364 systray.exe
1364 systray.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

Invoice pdf.exeInvoice pdf.exesystray.exe

description pid process

Token: SeDebugPrivilege 3932 Invoice pdf.exe
Token: SeDebugPrivilege 192 Invoice pdf.exe
Token: SeDebugPrivilege 1364 systray.exe
Suspicious use of UnmapMainImage 1 IoCs

Processes:

Explorer.EXE

pid process

3000 Explorer.EXE

pid	process
3000	Explorer.EXE

pid	process
192	Invoice pdf.exe
192	Invoice pdf.exe
192	Invoice pdf.exe
1364	systray.exe
1364	systray.exe

description	pid	process
Token: SeDebugPrivilege	3932	Invoice pdf.exe
Token: SeDebugPrivilege	192	Invoice pdf.exe
Token: SeDebugPrivilege	1364	systray.exe

pid	process
3000	Explorer.EXE

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

Invoice pdf.exeExplorer.EXEsystray.exe

description	pid	process	target process
PID 3932 wrote to memory of 3612	3932	Invoice pdf.exe	Invoice pdf.exe
PID 3932 wrote to memory of 3612	3932	Invoice pdf.exe	Invoice pdf.exe
PID 3932 wrote to memory of 3612	3932	Invoice pdf.exe	Invoice pdf.exe
PID 3932 wrote to memory of 192	3932	Invoice pdf.exe	Invoice pdf.exe
PID 3932 wrote to memory of 192	3932	Invoice pdf.exe	Invoice pdf.exe
PID 3932 wrote to memory of 192	3932	Invoice pdf.exe	Invoice pdf.exe
PID 3932 wrote to memory of 192	3932	Invoice pdf.exe	Invoice pdf.exe
PID 3932 wrote to memory of 192	3932	Invoice pdf.exe	Invoice pdf.exe
PID 3932 wrote to memory of 192	3932	Invoice pdf.exe	Invoice pdf.exe
PID 3000 wrote to memory of 1364	3000	Explorer.EXE	systray.exe
PID 3000 wrote to memory of 1364	3000	Explorer.EXE	systray.exe
PID 3000 wrote to memory of 1364	3000	Explorer.EXE	systray.exe
PID 1364 wrote to memory of 2352	1364	systray.exe	cmd.exe
PID 1364 wrote to memory of 2352	1364	systray.exe	cmd.exe
PID 1364 wrote to memory of 2352	1364	systray.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:3000

C:\Users\Admin\AppData\Local\Temp\Invoice pdf.exe
"C:\Users\Admin\AppData\Local\Temp\Invoice pdf.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3932

C:\Users\Admin\AppData\Local\Temp\Invoice pdf.exe
"C:\Users\Admin\AppData\Local\Temp\Invoice pdf.exe"
3⤵
PID:3612

C:\Users\Admin\AppData\Local\Temp\Invoice pdf.exe
"C:\Users\Admin\AppData\Local\Temp\Invoice pdf.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:192

C:\Windows\SysWOW64\systray.exe
"C:\Windows\SysWOW64\systray.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1364

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\Invoice pdf.exe"
3⤵
PID:2352

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

memory/192-124-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/192-126-0x0000000001790000-0x0000000001AB0000-memory.dmp

Filesize
3.1MB

Download
memory/192-127-0x0000000001360000-0x0000000001370000-memory.dmp

Filesize
64KB

Download
memory/192-125-0x000000000041D0B0-mapping.dmp

Download
memory/1364-131-0x0000000000A10000-0x0000000000A16000-memory.dmp

Filesize
24KB

Download
memory/1364-129-0x0000000000000000-mapping.dmp

Download
memory/1364-134-0x00000000040E0000-0x000000000416F000-memory.dmp

Filesize
572KB

Download
memory/1364-132-0x0000000002A60000-0x0000000002A89000-memory.dmp

Filesize
164KB

Download
memory/1364-133-0x0000000004190000-0x00000000044B0000-memory.dmp

Filesize
3.1MB

Download
memory/2352-130-0x0000000000000000-mapping.dmp

Download
memory/3000-128-0x00000000066E0000-0x0000000006814000-memory.dmp

Filesize
1.2MB

Download
memory/3000-135-0x0000000006FA0000-0x000000000712D000-memory.dmp

Filesize
1.6MB

Download
memory/3932-117-0x0000000005080000-0x0000000005081000-memory.dmp

Filesize
4KB

Download
memory/3932-116-0x0000000005580000-0x0000000005581000-memory.dmp

Filesize
4KB

Download
memory/3932-120-0x0000000005300000-0x0000000005316000-memory.dmp

Filesize
88KB

Download
memory/3932-118-0x0000000005080000-0x000000000557E000-memory.dmp

Filesize
5.0MB

Download
memory/3932-114-0x0000000000740000-0x0000000000741000-memory.dmp

Filesize
4KB

Download
memory/3932-119-0x0000000005010000-0x0000000005011000-memory.dmp

Filesize
4KB

Download
memory/3932-123-0x0000000009CA0000-0x0000000009CCB000-memory.dmp

Filesize
172KB

Download
memory/3932-122-0x00000000075D0000-0x0000000007631000-memory.dmp

Filesize
388KB

Download
memory/3932-121-0x0000000007430000-0x0000000007431000-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