xloader | a7c1f4ae5c35b88e68b4d82db4c7e14d53922946d853569b5efd5050e7480229

Analysis

max time kernel
152s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
02-09-2022 03:27

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General

Target

42.exe
Size

180KB
MD5

12d0de0d9ba0e753b17a5572a3a23822
SHA1

19ea0cdd98fbe21fd9b7a6c1a1a681d882c9e973
SHA256

b38ccebbce70c75c88be4529e17377d914fcc21b63f9afec651299e68b3346a4
SHA512

9f3c978c6793af877209b225bed86745160923f1db142015a0eb542207de43353998e50311914e7e46a29698dd779a2ed855e2d8fa34501bc570fc44144dd856
SSDEEP

3072:2TFKD7rLrumkW7yyuMaEaGLoXgeg0KaMQC+t8j9o8mcW7sFBV:gKPrOmYyud/GLoXgj0KajC+Yo8mcCO3

Score

10^/10

xloader loader rat

Malware Config

Signatures

Xloader
Xloader is a rebranded version of Formbook malware.
loader xloader

Xloader payload 2 IoCs

rat

Processes:

resource	yara_rule
behavioral10/memory/4816-137-0x0000000000D70000-0x0000000000D9D000-memory.dmp	xloader
behavioral10/memory/4816-142-0x0000000000D70000-0x0000000000D9D000-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:

42.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation 42.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	42.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

42.exehelp.exe

description	pid	process	target process
PID 5080 set thread context of 3080	5080	42.exe	Explorer.EXE
PID 4816 set thread context of 3080	4816	help.exe	Explorer.EXE

Suspicious behavior: EnumeratesProcesses 58 IoCs

Processes:

42.exehelp.exe

pid	process
5080	42.exe
5080	42.exe
5080	42.exe
5080	42.exe
4816	help.exe
4816	help.exe
4816	help.exe
4816	help.exe
4816	help.exe
4816	help.exe
4816	help.exe
4816	help.exe
4816	help.exe
4816	help.exe
4816	help.exe
4816	help.exe
4816	help.exe
4816	help.exe
4816	help.exe
4816	help.exe
4816	help.exe
4816	help.exe
4816	help.exe
4816	help.exe
4816	help.exe
4816	help.exe
4816	help.exe
4816	help.exe
4816	help.exe
4816	help.exe
4816	help.exe
4816	help.exe
4816	help.exe
4816	help.exe
4816	help.exe
4816	help.exe
4816	help.exe
4816	help.exe
4816	help.exe
4816	help.exe
4816	help.exe
4816	help.exe
4816	help.exe
4816	help.exe
4816	help.exe
4816	help.exe
4816	help.exe
4816	help.exe
4816	help.exe
4816	help.exe
4816	help.exe
4816	help.exe
4816	help.exe
4816	help.exe
4816	help.exe
4816	help.exe
4816	help.exe
4816	help.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

3080 Explorer.EXE
Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

42.exehelp.exe

pid process

5080 42.exe
5080 42.exe
5080 42.exe
4816 help.exe
4816 help.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

42.exehelp.exe

description pid process

Token: SeDebugPrivilege 5080 42.exe
Token: SeDebugPrivilege 4816 help.exe

pid	process
3080	Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	5080	42.exe
Token: SeDebugPrivilege	4816	help.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

Explorer.EXEhelp.exe

description	pid	process	target process
PID 3080 wrote to memory of 4816	3080	Explorer.EXE	help.exe
PID 3080 wrote to memory of 4816	3080	Explorer.EXE	help.exe
PID 3080 wrote to memory of 4816	3080	Explorer.EXE	help.exe
PID 4816 wrote to memory of 2448	4816	help.exe	cmd.exe
PID 4816 wrote to memory of 2448	4816	help.exe	cmd.exe
PID 4816 wrote to memory of 2448	4816	help.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:3080

C:\Users\Admin\AppData\Local\Temp\42.exe
"C:\Users\Admin\AppData\Local\Temp\42.exe"
2⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:5080

C:\Windows\SysWOW64\help.exe
"C:\Windows\SysWOW64\help.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4816

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\42.exe"
3⤵
PID:2448

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/2448-138-0x0000000000000000-mapping.dmp

Download
memory/3080-134-0x0000000002900000-0x0000000002A94000-memory.dmp

Filesize
1.6MB

Download
memory/3080-141-0x0000000002D10000-0x0000000002DCA000-memory.dmp

Filesize
744KB

Download
memory/3080-143-0x0000000002D10000-0x0000000002DCA000-memory.dmp

Filesize
744KB

Download
memory/4816-135-0x0000000000000000-mapping.dmp

Download
memory/4816-137-0x0000000000D70000-0x0000000000D9D000-memory.dmp

Filesize
180KB

Download
memory/4816-136-0x0000000000280000-0x0000000000287000-memory.dmp

Filesize
28KB

Download
memory/4816-139-0x0000000001830000-0x0000000001B7A000-memory.dmp

Filesize
3.3MB

Download
memory/4816-140-0x0000000001560000-0x00000000015F0000-memory.dmp

Filesize
576KB

Download
memory/4816-142-0x0000000000D70000-0x0000000000D9D000-memory.dmp

Filesize
180KB

Download
memory/5080-132-0x0000000001040000-0x000000000138A000-memory.dmp

Filesize
3.3MB

Download
memory/5080-133-0x0000000000FA0000-0x0000000000FB1000-memory.dmp

Filesize
68KB

Download