xworm | 771d0ba5b4f3b2d1c6d7a5ebe9b395e70e3d125540c28f1a0c1f80098c6775ce

General

Target

bqkriy6l.exe
Size

1.4MB
MD5

72a6fe522fd7466bf2e2ac9daf40a806
SHA1

b0164b9dfee039798191de85a96db7ac54538d02
SHA256

771d0ba5b4f3b2d1c6d7a5ebe9b395e70e3d125540c28f1a0c1f80098c6775ce
SHA512

b938a438e14458120316581cb1883579a2ce7f835b52f4ab1cde33aa85febcad11f8a8b0a23fb9a8acafa774fe9cbd1c804a02fd8e6f5d8df60924c351f0126e
SSDEEP

24576:9lh9OZjjhYvYjQJABLaR5nyAMqIvGPSFyPHCA2c8UkHBSDzJ4u:fhwZjjhYvYTLaPy+IvG6FHAk8DzJ4u

Score

10^/10

xworm discovery rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

C2

38.180.203.11:1010

Mutex

LE5ccvPhTtoUBuJ2

Attributes

install_file
USB.exe

aes.plain

Signatures

Detect Xworm Payload 5 IoCs

resource	yara_rule
behavioral1/memory/2884-9-0x0000000000400000-0x000000000040E000-memory.dmp	family_xworm
behavioral1/memory/2884-14-0x0000000000400000-0x000000000040E000-memory.dmp	family_xworm
behavioral1/memory/2884-17-0x0000000000400000-0x000000000040E000-memory.dmp	family_xworm
behavioral1/memory/2884-12-0x0000000000400000-0x000000000040E000-memory.dmp	family_xworm
behavioral1/memory/2884-10-0x0000000000400000-0x000000000040E000-memory.dmp	family_xworm

Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm
Xworm family
xworm

Drops startup file 2 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\frameApp_consoleMode.exe	Powershell.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\frameApp_consoleMode.exe	Powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3048 set thread context of 2884	3048	bqkriy6l.exe	31

System Location Discovery: System Language Discovery 1 TTPs 3 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	bqkriy6l.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MSBuild.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Powershell.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2680	Powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	3048	bqkriy6l.exe
Token: SeDebugPrivilege	2884	MSBuild.exe
Token: SeDebugPrivilege	2680	Powershell.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 3048 wrote to memory of 2884	3048	bqkriy6l.exe	31
PID 3048 wrote to memory of 2884	3048	bqkriy6l.exe	31
PID 3048 wrote to memory of 2884	3048	bqkriy6l.exe	31
PID 3048 wrote to memory of 2884	3048	bqkriy6l.exe	31
PID 3048 wrote to memory of 2884	3048	bqkriy6l.exe	31
PID 3048 wrote to memory of 2884	3048	bqkriy6l.exe	31
PID 3048 wrote to memory of 2884	3048	bqkriy6l.exe	31
PID 3048 wrote to memory of 2884	3048	bqkriy6l.exe	31
PID 3048 wrote to memory of 2884	3048	bqkriy6l.exe	31
PID 3048 wrote to memory of 2680	3048	bqkriy6l.exe	32
PID 3048 wrote to memory of 2680	3048	bqkriy6l.exe	32
PID 3048 wrote to memory of 2680	3048	bqkriy6l.exe	32
PID 3048 wrote to memory of 2680	3048	bqkriy6l.exe	32

C:\Users\Admin\AppData\Local\Temp\bqkriy6l.exe
"C:\Users\Admin\AppData\Local\Temp\bqkriy6l.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3048
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:2884
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\Powershell.exe
  "Powershell" Copy-Item 'C:\Users\Admin\AppData\Local\Temp\bqkriy6l.exe' 'C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\frameApp_consoleMode.exe'
  2⤵
  - Drops startup file
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2680

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2884-12-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2884-14-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2884-9-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2884-8-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2884-20-0x0000000074720000-0x0000000074E0E000-memory.dmp

Filesize
6.9MB

Download
memory/2884-19-0x0000000074720000-0x0000000074E0E000-memory.dmp

Filesize
6.9MB

Download
memory/2884-18-0x0000000074720000-0x0000000074E0E000-memory.dmp

Filesize
6.9MB

Download
memory/2884-7-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2884-10-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2884-11-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/2884-17-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/3048-5-0x0000000004820000-0x00000000048F6000-memory.dmp

Filesize
856KB

Download
memory/3048-0-0x000000007472E000-0x000000007472F000-memory.dmp

Filesize
4KB

Download
memory/3048-21-0x0000000074720000-0x0000000074E0E000-memory.dmp

Filesize
6.9MB

Download
memory/3048-2-0x0000000074720000-0x0000000074E0E000-memory.dmp

Filesize
6.9MB

Download
memory/3048-6-0x0000000000940000-0x0000000000962000-memory.dmp

Filesize
136KB

Download
memory/3048-1-0x0000000000B20000-0x0000000000C88000-memory.dmp

Filesize
1.4MB

Download
memory/3048-4-0x0000000074720000-0x0000000074E0E000-memory.dmp

Filesize
6.9MB

Download
memory/3048-3-0x0000000074720000-0x0000000074E0E000-memory.dmp

Filesize
6.9MB

Download

Analysis

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