xloader | 0a7a5f4a91ffb0759dd7e1fe9ddfe419c96e4d881060fc93968f92dd0b2aca8b

General

Target

3fd3f37912e5aa23fceb3877d6ee43c8b102410d4fc90b147aab266972939b07.exe
Size

695KB
MD5

7cd694db75c939ed51f668809c7d9f14
SHA1

cc26f30730167d1a746a20564d3568376c5b4afa
SHA256

3fd3f37912e5aa23fceb3877d6ee43c8b102410d4fc90b147aab266972939b07
SHA512

69e6f521a771f8bfb2c5989db52ec99f19adaf6bc721de6857a2d47660b37bd5f9b786c0b4bf78d4ac82322d26235c13fb444b6590ba6c85ef009758ddeb6fb4
SSDEEP

12288:Ik2utdK/JyxD8ovTikXA8t/9QFBHeh18U/k4DbF53e0IUFLlb6+QG8:IvIQkxDDvTikXAmQFB+L8Ow

Score

10^/10

xloader b6cu discovery loader rat

Malware Config

Extracted

Family

xloader

Version

2.3

Campaign

b6cu

Decoy

sxdiyan.com

web0084.com

cpafirmspokane.com

la-bio-geo.com

chacrit.com

stuntfighting.com

rjsworkshop.com

themillennialsfinest.com

thefrontrealestate.com

chairmn.com

best1korea.com

gudssutu.icu

backupchip.net

shrikanthamimports.com

sportrecoverysleeve.com

healthy-shack.com

investperwear.com

intertradeperu.com

resonantonshop.com

greghugheslaw.com

Signatures

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

Xloader payload 1 IoCs

rat

resource	yara_rule
behavioral2/memory/4864-17-0x0000000000400000-0x0000000000429000-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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	3fd3f37912e5aa23fceb3877d6ee43c8b102410d4fc90b147aab266972939b07.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1336 set thread context of 4864	1336	3fd3f37912e5aa23fceb3877d6ee43c8b102410d4fc90b147aab266972939b07.exe	101

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3fd3f37912e5aa23fceb3877d6ee43c8b102410d4fc90b147aab266972939b07.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
1116	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1336	3fd3f37912e5aa23fceb3877d6ee43c8b102410d4fc90b147aab266972939b07.exe
1336	3fd3f37912e5aa23fceb3877d6ee43c8b102410d4fc90b147aab266972939b07.exe
4864	3fd3f37912e5aa23fceb3877d6ee43c8b102410d4fc90b147aab266972939b07.exe
4864	3fd3f37912e5aa23fceb3877d6ee43c8b102410d4fc90b147aab266972939b07.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1336	3fd3f37912e5aa23fceb3877d6ee43c8b102410d4fc90b147aab266972939b07.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1336 wrote to memory of 1116	1336	3fd3f37912e5aa23fceb3877d6ee43c8b102410d4fc90b147aab266972939b07.exe	100
PID 1336 wrote to memory of 1116	1336	3fd3f37912e5aa23fceb3877d6ee43c8b102410d4fc90b147aab266972939b07.exe	100
PID 1336 wrote to memory of 1116	1336	3fd3f37912e5aa23fceb3877d6ee43c8b102410d4fc90b147aab266972939b07.exe	100
PID 1336 wrote to memory of 4864	1336	3fd3f37912e5aa23fceb3877d6ee43c8b102410d4fc90b147aab266972939b07.exe	101
PID 1336 wrote to memory of 4864	1336	3fd3f37912e5aa23fceb3877d6ee43c8b102410d4fc90b147aab266972939b07.exe	101
PID 1336 wrote to memory of 4864	1336	3fd3f37912e5aa23fceb3877d6ee43c8b102410d4fc90b147aab266972939b07.exe	101
PID 1336 wrote to memory of 4864	1336	3fd3f37912e5aa23fceb3877d6ee43c8b102410d4fc90b147aab266972939b07.exe	101
PID 1336 wrote to memory of 4864	1336	3fd3f37912e5aa23fceb3877d6ee43c8b102410d4fc90b147aab266972939b07.exe	101
PID 1336 wrote to memory of 4864	1336	3fd3f37912e5aa23fceb3877d6ee43c8b102410d4fc90b147aab266972939b07.exe	101

C:\Users\Admin\AppData\Local\Temp\3fd3f37912e5aa23fceb3877d6ee43c8b102410d4fc90b147aab266972939b07.exe
"C:\Users\Admin\AppData\Local\Temp\3fd3f37912e5aa23fceb3877d6ee43c8b102410d4fc90b147aab266972939b07.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1336
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\AtCtTZ" /XML "C:\Users\Admin\AppData\Local\Temp\tmp553F.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:1116
- C:\Users\Admin\AppData\Local\Temp\3fd3f37912e5aa23fceb3877d6ee43c8b102410d4fc90b147aab266972939b07.exe
  "C:\Users\Admin\AppData\Local\Temp\3fd3f37912e5aa23fceb3877d6ee43c8b102410d4fc90b147aab266972939b07.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:4864

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1336-6-0x0000000006400000-0x000000000640E000-memory.dmp

Filesize
56KB

Download
memory/1336-8-0x0000000074B9E000-0x0000000074B9F000-memory.dmp

Filesize
4KB

Download
memory/1336-2-0x0000000005420000-0x00000000059C4000-memory.dmp

Filesize
5.6MB

Download
memory/1336-3-0x0000000004F10000-0x0000000004FA2000-memory.dmp

Filesize
584KB

Download
memory/1336-4-0x0000000074B90000-0x0000000075340000-memory.dmp

Filesize
7.7MB

Download
memory/1336-5-0x00000000050B0000-0x00000000050BA000-memory.dmp

Filesize
40KB

Download
memory/1336-1-0x0000000000590000-0x0000000000644000-memory.dmp

Filesize
720KB

Download
memory/1336-7-0x0000000006A40000-0x0000000006ADC000-memory.dmp

Filesize
624KB

Download
memory/1336-0-0x0000000074B9E000-0x0000000074B9F000-memory.dmp

Filesize
4KB

Download
memory/1336-9-0x0000000074B90000-0x0000000075340000-memory.dmp

Filesize
7.7MB

Download
memory/1336-10-0x00000000080A0000-0x0000000008106000-memory.dmp

Filesize
408KB

Download
memory/1336-11-0x0000000006BA0000-0x0000000006BCE000-memory.dmp

Filesize
184KB

Download
memory/1336-19-0x0000000074B90000-0x0000000075340000-memory.dmp

Filesize
7.7MB

Download
memory/4864-17-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/4864-20-0x0000000001140000-0x000000000148A000-memory.dmp

Filesize
3.3MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads