xloader | ef5551b32efae3527d147f40eaac18ab0213b7382d5d54bc67fd1c9911007480

General

Target

STD 35 GA Plan_DOCX.exe
Size

681KB
MD5

1cb1b73c99d72a4d1dcc09858ad1cee5
SHA1

76a12baf54b1f66fbccc3728d3e1fc1ca663c6ee
SHA256

ef5551b32efae3527d147f40eaac18ab0213b7382d5d54bc67fd1c9911007480
SHA512

1206dc9ff04af0d47b96a9e7598fa72626f4d56d0f515ce77ab5d0239a5fa9a1f2d67ba72f0354ed77736078cf466814f7ab5b9497d31a0ef7213cec4e332682

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 6 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1876-63-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/1876-64-0x000000000041F840-mapping.dmp	xloader
behavioral1/memory/1876-69-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/1876-73-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/596-76-0x0000000000080000-0x00000000000AC000-memory.dmp	xloader
behavioral1/memory/596-80-0x0000000000080000-0x00000000000AC000-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_DOCX.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Control Panel\International\Geo\Nation	STD 35 GA Plan_DOCX.exe

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

784 cmd.exe

pid	process
784	cmd.exe

Suspicious use of SetThreadContext 4 IoCs

Processes:

STD 35 GA Plan_DOCX.exeSTD 35 GA Plan_DOCX.exechkdsk.exe

description	pid	process	target process
PID 1336 set thread context of 1876	1336	STD 35 GA Plan_DOCX.exe	STD 35 GA Plan_DOCX.exe
PID 1876 set thread context of 1260	1876	STD 35 GA Plan_DOCX.exe	Explorer.EXE
PID 1876 set thread context of 1260	1876	STD 35 GA Plan_DOCX.exe	Explorer.EXE
PID 596 set thread context of 1260	596	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 16 IoCs

Processes:

STD 35 GA Plan_DOCX.exechkdsk.exe

pid	process
1876	STD 35 GA Plan_DOCX.exe
1876	STD 35 GA Plan_DOCX.exe
1876	STD 35 GA Plan_DOCX.exe
596	chkdsk.exe
596	chkdsk.exe
596	chkdsk.exe
596	chkdsk.exe
596	chkdsk.exe
596	chkdsk.exe
596	chkdsk.exe
596	chkdsk.exe
596	chkdsk.exe
596	chkdsk.exe
596	chkdsk.exe
596	chkdsk.exe
596	chkdsk.exe

Suspicious behavior: MapViewOfSection 6 IoCs

Processes:

STD 35 GA Plan_DOCX.exechkdsk.exe

pid process

1876 STD 35 GA Plan_DOCX.exe
1876 STD 35 GA Plan_DOCX.exe
1876 STD 35 GA Plan_DOCX.exe
1876 STD 35 GA Plan_DOCX.exe
596 chkdsk.exe
596 chkdsk.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

STD 35 GA Plan_DOCX.exechkdsk.exe

description pid process

Token: SeDebugPrivilege 1876 STD 35 GA Plan_DOCX.exe
Token: SeDebugPrivilege 596 chkdsk.exe
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1260 Explorer.EXE
1260 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1260 Explorer.EXE
1260 Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	1876	STD 35 GA Plan_DOCX.exe
Token: SeDebugPrivilege	596	chkdsk.exe

pid	process
1260	Explorer.EXE
1260	Explorer.EXE

pid	process
1260	Explorer.EXE
1260	Explorer.EXE

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

STD 35 GA Plan_DOCX.exeExplorer.EXEchkdsk.exe

description	pid	process	target process
PID 1336 wrote to memory of 1876	1336	STD 35 GA Plan_DOCX.exe	STD 35 GA Plan_DOCX.exe
PID 1336 wrote to memory of 1876	1336	STD 35 GA Plan_DOCX.exe	STD 35 GA Plan_DOCX.exe
PID 1336 wrote to memory of 1876	1336	STD 35 GA Plan_DOCX.exe	STD 35 GA Plan_DOCX.exe
PID 1336 wrote to memory of 1876	1336	STD 35 GA Plan_DOCX.exe	STD 35 GA Plan_DOCX.exe
PID 1336 wrote to memory of 1876	1336	STD 35 GA Plan_DOCX.exe	STD 35 GA Plan_DOCX.exe
PID 1336 wrote to memory of 1876	1336	STD 35 GA Plan_DOCX.exe	STD 35 GA Plan_DOCX.exe
PID 1336 wrote to memory of 1876	1336	STD 35 GA Plan_DOCX.exe	STD 35 GA Plan_DOCX.exe
PID 1260 wrote to memory of 596	1260	Explorer.EXE	chkdsk.exe
PID 1260 wrote to memory of 596	1260	Explorer.EXE	chkdsk.exe
PID 1260 wrote to memory of 596	1260	Explorer.EXE	chkdsk.exe
PID 1260 wrote to memory of 596	1260	Explorer.EXE	chkdsk.exe
PID 596 wrote to memory of 784	596	chkdsk.exe	cmd.exe
PID 596 wrote to memory of 784	596	chkdsk.exe	cmd.exe
PID 596 wrote to memory of 784	596	chkdsk.exe	cmd.exe
PID 596 wrote to memory of 784	596	chkdsk.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:1260

C:\Users\Admin\AppData\Local\Temp\STD 35 GA Plan_DOCX.exe
"C:\Users\Admin\AppData\Local\Temp\STD 35 GA Plan_DOCX.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1336

C:\Users\Admin\AppData\Local\Temp\STD 35 GA Plan_DOCX.exe
"C:\Users\Admin\AppData\Local\Temp\STD 35 GA Plan_DOCX.exe"
3⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1876

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:596

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\STD 35 GA Plan_DOCX.exe"
3⤵
- Deletes itself
PID:784

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/596-72-0x0000000000000000-mapping.dmp

Download
memory/596-80-0x0000000000080000-0x00000000000AC000-memory.dmp

Filesize
176KB

Download
memory/596-78-0x0000000001F20000-0x0000000001FB0000-memory.dmp

Filesize
576KB

Download
memory/596-77-0x0000000002020000-0x0000000002323000-memory.dmp

Filesize
3.0MB

Download
memory/596-76-0x0000000000080000-0x00000000000AC000-memory.dmp

Filesize
176KB

Download
memory/596-75-0x0000000000A80000-0x0000000000A87000-memory.dmp

Filesize
28KB

Download
memory/784-74-0x0000000000000000-mapping.dmp

Download
memory/1260-68-0x00000000073B0000-0x0000000007558000-memory.dmp

Filesize
1.7MB

Download
memory/1260-71-0x0000000004390000-0x0000000004450000-memory.dmp

Filesize
768KB

Download
memory/1260-81-0x0000000007560000-0x00000000076DE000-memory.dmp

Filesize
1.5MB

Download
memory/1260-79-0x0000000007560000-0x00000000076DE000-memory.dmp

Filesize
1.5MB

Download
memory/1336-58-0x0000000005210000-0x000000000528A000-memory.dmp

Filesize
488KB

Download
memory/1336-59-0x0000000004EB0000-0x0000000004EE2000-memory.dmp

Filesize
200KB

Download
memory/1336-55-0x00000000753B1000-0x00000000753B3000-memory.dmp

Filesize
8KB

Download
memory/1336-56-0x0000000000580000-0x00000000005A0000-memory.dmp

Filesize
128KB

Download
memory/1336-54-0x00000000010C0000-0x0000000001170000-memory.dmp

Filesize
704KB

Download
memory/1336-57-0x0000000000A40000-0x0000000000A4E000-memory.dmp

Filesize
56KB

Download
memory/1876-67-0x0000000000350000-0x0000000000361000-memory.dmp

Filesize
68KB

Download
memory/1876-60-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1876-73-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1876-63-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1876-61-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1876-70-0x0000000000390000-0x00000000003A1000-memory.dmp

Filesize
68KB

Download
memory/1876-66-0x0000000000880000-0x0000000000B83000-memory.dmp

Filesize
3.0MB

Download
memory/1876-69-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1876-64-0x000000000041F840-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads