xloader | 27ec204fc931a77bb20d520c3549e4ec09f38e01e8bffd6c7a22827b8774444b

General

Target

POSH service quotation..exe
Size

548KB
MD5

38f0e944212962eca78d2209e614aa41
SHA1

7b638710352c0374f41374bde07aa2d57263e8f1
SHA256

2579540806631bf43383d340bf445855f71106614b40854ca9cf33265a24f900
SHA512

3a1178bcf072d554c3c758cf2a4f3a083e027069f2d3c13d55a0e27162a14822ce0ecb5c526b27e1d281c995a6d617cf0c27359f9c23a2a433b1afcf8f12ad96

Score

10^/10

xloader n58i loader rat suricata

Malware Config

Extracted

Family

xloader

Version

2.3

Campaign

n58i

C2

http://www.mack3sleeve.com/n58i/

Decoy

nl-cafe.com

votetedjaleta.com

britrobertsrealtor.com

globipark.com

citysucces.com

verisignwebsite-verified.com

riddlepc.com

rosecityclimbing.com

oleandrinextract.com

salmankonstruksi.com

needhamchannel.com

refreshx2z.com

youth66.com

pla-russia.com

halloweenmaskpro.com

exdysis.com

1gcz.com

lookgoodman.com

rlxagva.com

stlcityc.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
behavioral2/memory/940-124-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral2/memory/940-125-0x000000000041D070-mapping.dmp	xloader
behavioral2/memory/3284-132-0x0000000000330000-0x0000000000359000-memory.dmp	xloader

Suspicious use of SetThreadContext 3 IoCs

Processes:

POSH service quotation..exeRegSvcs.exechkdsk.exe

description	pid	process	target process
PID 3728 set thread context of 940	3728	POSH service quotation..exe	RegSvcs.exe
PID 940 set thread context of 3028	940	RegSvcs.exe	Explorer.EXE
PID 3284 set thread context of 3028	3284	chkdsk.exe	Explorer.EXE

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

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	chkdsk.exe

Suspicious behavior: EnumeratesProcesses 44 IoCs

Processes:

POSH service quotation..exeRegSvcs.exechkdsk.exe

pid	process
3728	POSH service quotation..exe
3728	POSH service quotation..exe
940	RegSvcs.exe
940	RegSvcs.exe
940	RegSvcs.exe
940	RegSvcs.exe
3284	chkdsk.exe
3284	chkdsk.exe
3284	chkdsk.exe
3284	chkdsk.exe
3284	chkdsk.exe
3284	chkdsk.exe
3284	chkdsk.exe
3284	chkdsk.exe
3284	chkdsk.exe
3284	chkdsk.exe
3284	chkdsk.exe
3284	chkdsk.exe
3284	chkdsk.exe
3284	chkdsk.exe
3284	chkdsk.exe
3284	chkdsk.exe
3284	chkdsk.exe
3284	chkdsk.exe
3284	chkdsk.exe
3284	chkdsk.exe
3284	chkdsk.exe
3284	chkdsk.exe
3284	chkdsk.exe
3284	chkdsk.exe
3284	chkdsk.exe
3284	chkdsk.exe
3284	chkdsk.exe
3284	chkdsk.exe
3284	chkdsk.exe
3284	chkdsk.exe
3284	chkdsk.exe
3284	chkdsk.exe
3284	chkdsk.exe
3284	chkdsk.exe
3284	chkdsk.exe
3284	chkdsk.exe
3284	chkdsk.exe
3284	chkdsk.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

3028 Explorer.EXE
Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

RegSvcs.exechkdsk.exe

pid process

940 RegSvcs.exe
940 RegSvcs.exe
940 RegSvcs.exe
3284 chkdsk.exe
3284 chkdsk.exe

pid	process
3028	Explorer.EXE

pid	process
940	RegSvcs.exe
940	RegSvcs.exe
940	RegSvcs.exe
3284	chkdsk.exe
3284	chkdsk.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

POSH service quotation..exeRegSvcs.exechkdsk.exe

description	pid	process
Token: SeDebugPrivilege	3728	POSH service quotation..exe
Token: SeDebugPrivilege	940	RegSvcs.exe
Token: SeDebugPrivilege	3284	chkdsk.exe

Suspicious use of UnmapMainImage 1 IoCs

Processes:

Explorer.EXE

pid process

3028 Explorer.EXE

pid	process
3028	Explorer.EXE

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

POSH service quotation..exeExplorer.EXEchkdsk.exe

description	pid	process	target process
PID 3728 wrote to memory of 940	3728	POSH service quotation..exe	RegSvcs.exe
PID 3728 wrote to memory of 940	3728	POSH service quotation..exe	RegSvcs.exe
PID 3728 wrote to memory of 940	3728	POSH service quotation..exe	RegSvcs.exe
PID 3728 wrote to memory of 940	3728	POSH service quotation..exe	RegSvcs.exe
PID 3728 wrote to memory of 940	3728	POSH service quotation..exe	RegSvcs.exe
PID 3728 wrote to memory of 940	3728	POSH service quotation..exe	RegSvcs.exe
PID 3028 wrote to memory of 3284	3028	Explorer.EXE	chkdsk.exe
PID 3028 wrote to memory of 3284	3028	Explorer.EXE	chkdsk.exe
PID 3028 wrote to memory of 3284	3028	Explorer.EXE	chkdsk.exe
PID 3284 wrote to memory of 1484	3284	chkdsk.exe	cmd.exe
PID 3284 wrote to memory of 1484	3284	chkdsk.exe	cmd.exe
PID 3284 wrote to memory of 1484	3284	chkdsk.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:3028

C:\Users\Admin\AppData\Local\Temp\POSH service quotation..exe
"C:\Users\Admin\AppData\Local\Temp\POSH service quotation..exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3728

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:940

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:3284

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
3⤵
PID:1484

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/940-124-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/940-127-0x0000000001910000-0x0000000001921000-memory.dmp

Filesize
68KB

Download
memory/940-126-0x00000000015B0000-0x00000000018D0000-memory.dmp

Filesize
3.1MB

Download
memory/940-125-0x000000000041D070-mapping.dmp

Download
memory/1484-130-0x0000000000000000-mapping.dmp

Download
memory/3028-128-0x0000000006BC0000-0x0000000006CBB000-memory.dmp

Filesize
1004KB

Download
memory/3028-135-0x0000000006E30000-0x0000000006F01000-memory.dmp

Filesize
836KB

Download
memory/3284-132-0x0000000000330000-0x0000000000359000-memory.dmp

Filesize
164KB

Download
memory/3284-129-0x0000000000000000-mapping.dmp

Download
memory/3284-134-0x0000000000AB0000-0x0000000000B40000-memory.dmp

Filesize
576KB

Download
memory/3284-133-0x0000000004DD0000-0x00000000050F0000-memory.dmp

Filesize
3.1MB

Download
memory/3284-131-0x0000000000C20000-0x0000000000C2A000-memory.dmp

Filesize
40KB

Download
memory/3728-117-0x0000000004E80000-0x0000000004E81000-memory.dmp

Filesize
4KB

Download
memory/3728-122-0x00000000073B0000-0x0000000007417000-memory.dmp

Filesize
412KB

Download
memory/3728-116-0x0000000005380000-0x0000000005381000-memory.dmp

Filesize
4KB

Download
memory/3728-114-0x0000000000430000-0x0000000000431000-memory.dmp

Filesize
4KB

Download
memory/3728-123-0x0000000009A60000-0x0000000009A92000-memory.dmp

Filesize
200KB

Download
memory/3728-120-0x0000000005090000-0x00000000050A6000-memory.dmp

Filesize
88KB

Download
memory/3728-118-0x0000000004E80000-0x000000000537E000-memory.dmp

Filesize
5.0MB

Download
memory/3728-119-0x0000000004E30000-0x0000000004E31000-memory.dmp

Filesize
4KB

Download
memory/3728-121-0x0000000007210000-0x0000000007211000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads