xloader | 5846e4c3d380772683c6398d37c33d7a3484762fccd6d8636b2b5d337637d00a

General

Target

STD 35 GA Plan_doc.exe
Size

867KB
MD5

d367a1f17ef481d21775f424c4beb7b7
SHA1

fc083e789e7f06627bf3465f74524a5758896f32
SHA256

5846e4c3d380772683c6398d37c33d7a3484762fccd6d8636b2b5d337637d00a
SHA512

2b9c821c00989e6cf9ee1279f8d34d8d02f3af5e07269d34e8e29c6a137e66522eff8211fb3c68bfafaef099aaec926a0a070bc940dd94f30657061b98541566

Score

10^/10

xloader iewb loader rat suricata

Malware Config

Extracted

Family

xloader

Version

2.9

Campaign

iewb

Decoy

n8FLlgIlb1rSEg5hJ9xMbw4hcmR38Q==

5vIAIY+pt81OtWs+FdIEdk7Y

LHIKc+oWGIQUUlfAAtEEdk7Y

ePM/cX2jvHrS

5hvPEw22+fdvmJz3C8FIVq0=

mb9EeX2jvHrS

Dx2zIYNvfjo8VUo5

6jVPnyJekv2RAc4gLKNwEqQ=

KWatHyjdE5Gj1Ng=

t9lk70gzUAZty4qjbVjF

6eUBeFPzKBWT125BFNIEdk7Y

dZUXOIyqTJGj1Ng=

iL3TVh2Jl5QVStnzxcAhIL8=

J1prtyklUfZGR/xDD71IbkWRd2yx

s9FgCOBRW9bU0Y6jbVjF

RYCbQDzcFBhcylgu

Fl0BV/8RJm6F9QRg8LXXTLo=

0dhumHzrCCZ3wdQg7nFF1AlL6Tk=

xvL+iL6wwX+/wH9K4lbZ/A==

N0lVceIFD5Gj1Ng=

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 4 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/1680-137-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral2/memory/1680-139-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral2/memory/2640-145-0x0000000000E70000-0x0000000000E9C000-memory.dmp	xloader
behavioral2/memory/2640-148-0x0000000000E70000-0x0000000000E9C000-memory.dmp	xloader

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

STD 35 GA Plan_doc.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Control Panel\International\Geo\Nation	STD 35 GA Plan_doc.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

STD 35 GA Plan_doc.exeSTD 35 GA Plan_doc.exemsdt.exe

description	pid	process	target process
PID 3804 set thread context of 1680	3804	STD 35 GA Plan_doc.exe	STD 35 GA Plan_doc.exe
PID 1680 set thread context of 2604	1680	STD 35 GA Plan_doc.exe	Explorer.EXE
PID 2640 set thread context of 2604	2640	msdt.exe	Explorer.EXE

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

3796 3804 WerFault.exe STD 35 GA Plan_doc.exe

pid	pid_target	process	target process
3796	3804	WerFault.exe	STD 35 GA Plan_doc.exe

Suspicious behavior: EnumeratesProcesses 24 IoCs

Processes:

STD 35 GA Plan_doc.exemsdt.exe

pid	process
1680	STD 35 GA Plan_doc.exe
1680	STD 35 GA Plan_doc.exe
1680	STD 35 GA Plan_doc.exe
1680	STD 35 GA Plan_doc.exe
2640	msdt.exe
2640	msdt.exe
2640	msdt.exe
2640	msdt.exe
2640	msdt.exe
2640	msdt.exe
2640	msdt.exe
2640	msdt.exe
2640	msdt.exe
2640	msdt.exe
2640	msdt.exe
2640	msdt.exe
2640	msdt.exe
2640	msdt.exe
2640	msdt.exe
2640	msdt.exe
2640	msdt.exe
2640	msdt.exe
2640	msdt.exe
2640	msdt.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

2604 Explorer.EXE
Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

STD 35 GA Plan_doc.exemsdt.exe

pid process

1680 STD 35 GA Plan_doc.exe
1680 STD 35 GA Plan_doc.exe
1680 STD 35 GA Plan_doc.exe
2640 msdt.exe
2640 msdt.exe

pid	process
2604	Explorer.EXE

Suspicious use of AdjustPrivilegeToken 8 IoCs

Processes:

STD 35 GA Plan_doc.exemsdt.exeExplorer.EXE

description	pid	process
Token: SeDebugPrivilege	1680	STD 35 GA Plan_doc.exe
Token: SeDebugPrivilege	2640	msdt.exe
Token: SeShutdownPrivilege	2604	Explorer.EXE
Token: SeCreatePagefilePrivilege	2604	Explorer.EXE
Token: SeShutdownPrivilege	2604	Explorer.EXE
Token: SeCreatePagefilePrivilege	2604	Explorer.EXE
Token: SeShutdownPrivilege	2604	Explorer.EXE
Token: SeCreatePagefilePrivilege	2604	Explorer.EXE

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

STD 35 GA Plan_doc.exeExplorer.EXEmsdt.exe

description	pid	process	target process
PID 3804 wrote to memory of 1680	3804	STD 35 GA Plan_doc.exe	STD 35 GA Plan_doc.exe
PID 3804 wrote to memory of 1680	3804	STD 35 GA Plan_doc.exe	STD 35 GA Plan_doc.exe
PID 3804 wrote to memory of 1680	3804	STD 35 GA Plan_doc.exe	STD 35 GA Plan_doc.exe
PID 3804 wrote to memory of 1680	3804	STD 35 GA Plan_doc.exe	STD 35 GA Plan_doc.exe
PID 3804 wrote to memory of 1680	3804	STD 35 GA Plan_doc.exe	STD 35 GA Plan_doc.exe
PID 3804 wrote to memory of 1680	3804	STD 35 GA Plan_doc.exe	STD 35 GA Plan_doc.exe
PID 2604 wrote to memory of 2640	2604	Explorer.EXE	msdt.exe
PID 2604 wrote to memory of 2640	2604	Explorer.EXE	msdt.exe
PID 2604 wrote to memory of 2640	2604	Explorer.EXE	msdt.exe
PID 2640 wrote to memory of 2204	2640	msdt.exe	cmd.exe
PID 2640 wrote to memory of 2204	2640	msdt.exe	cmd.exe
PID 2640 wrote to memory of 2204	2640	msdt.exe	cmd.exe

C:\Users\Admin\AppData\Local\Temp\STD 35 GA Plan_doc.exe
"C:\Users\Admin\AppData\Local\Temp\STD 35 GA Plan_doc.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3804

C:\Users\Admin\AppData\Local\Temp\STD 35 GA Plan_doc.exe
"C:\Users\Admin\AppData\Local\Temp\STD 35 GA Plan_doc.exe"
2⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1680

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3804 -s 1460
2⤵
- Program crash
PID:3796

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2604

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
- Suspicious use of WriteProcessMemory
PID:2640

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\STD 35 GA Plan_doc.exe"
3⤵
PID:2204

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3804 -ip 3804
1⤵
PID:3464

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

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Downloads

memory/1680-140-0x00000000015C0000-0x000000000190A000-memory.dmp

Filesize
3.3MB

Download
memory/1680-141-0x0000000001040000-0x0000000001051000-memory.dmp

Filesize
68KB

Download
memory/1680-136-0x0000000000000000-mapping.dmp

Download
memory/1680-137-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1680-139-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/2204-147-0x0000000000000000-mapping.dmp

Download
memory/2604-151-0x0000000002C80000-0x0000000002DEC000-memory.dmp

Filesize
1.4MB

Download
memory/2604-150-0x0000000002C80000-0x0000000002DEC000-memory.dmp

Filesize
1.4MB

Download
memory/2604-142-0x0000000002890000-0x0000000002A05000-memory.dmp

Filesize
1.5MB

Download
memory/2640-146-0x0000000003090000-0x00000000033DA000-memory.dmp

Filesize
3.3MB

Download
memory/2640-143-0x0000000000000000-mapping.dmp

Download
memory/2640-144-0x0000000000F10000-0x0000000000F67000-memory.dmp

Filesize
348KB

Download
memory/2640-145-0x0000000000E70000-0x0000000000E9C000-memory.dmp

Filesize
176KB

Download
memory/2640-148-0x0000000000E70000-0x0000000000E9C000-memory.dmp

Filesize
176KB

Download
memory/2640-149-0x0000000002F20000-0x0000000002FB0000-memory.dmp

Filesize
576KB

Download
memory/3804-135-0x0000000001180000-0x00000000011E6000-memory.dmp

Filesize
408KB

Download
memory/3804-134-0x0000000008B40000-0x0000000008BDC000-memory.dmp

Filesize
624KB

Download
memory/3804-130-0x0000000000750000-0x000000000082E000-memory.dmp

Filesize
888KB

Download
memory/3804-133-0x0000000005390000-0x000000000539A000-memory.dmp

Filesize
40KB

Download
memory/3804-132-0x00000000051C0000-0x0000000005252000-memory.dmp

Filesize
584KB

Download
memory/3804-131-0x0000000005820000-0x0000000005DC4000-memory.dmp

Filesize
5.6MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads