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 1 IoCs

resource	yara_rule
behavioral2/memory/3864-10-0x0000000000400000-0x000000000040E000-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 created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\frameApp_consoleMode.exe	Powershell.exe
File opened for modification	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 4920 set thread context of 3864	4920	bqkriy6l.exe	98

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 2 IoCs

pid	Process
3468	Powershell.exe
3468	Powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	4920	bqkriy6l.exe
Token: SeDebugPrivilege	3864	MSBuild.exe
Token: SeDebugPrivilege	3468	Powershell.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 4920 wrote to memory of 3864	4920	bqkriy6l.exe	98
PID 4920 wrote to memory of 3864	4920	bqkriy6l.exe	98
PID 4920 wrote to memory of 3864	4920	bqkriy6l.exe	98
PID 4920 wrote to memory of 3864	4920	bqkriy6l.exe	98
PID 4920 wrote to memory of 3864	4920	bqkriy6l.exe	98
PID 4920 wrote to memory of 3864	4920	bqkriy6l.exe	98
PID 4920 wrote to memory of 3864	4920	bqkriy6l.exe	98
PID 4920 wrote to memory of 3864	4920	bqkriy6l.exe	98
PID 4920 wrote to memory of 3468	4920	bqkriy6l.exe	100
PID 4920 wrote to memory of 3468	4920	bqkriy6l.exe	100
PID 4920 wrote to memory of 3468	4920	bqkriy6l.exe	100

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:4920
- 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:3864
- 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:3468

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_fhd1cr3x.1yh.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/3468-37-0x0000000006630000-0x000000000664A000-memory.dmp

Filesize
104KB

Download
memory/3468-21-0x0000000005200000-0x0000000005222000-memory.dmp

Filesize
136KB

Download
memory/3468-18-0x0000000075360000-0x0000000075B10000-memory.dmp

Filesize
7.7MB

Download
memory/3468-38-0x0000000006680000-0x00000000066A2000-memory.dmp

Filesize
136KB

Download
memory/3468-35-0x0000000006490000-0x00000000064DC000-memory.dmp

Filesize
304KB

Download
memory/3468-34-0x0000000006140000-0x000000000615E000-memory.dmp

Filesize
120KB

Download
memory/3468-33-0x0000000005B40000-0x0000000005E94000-memory.dmp

Filesize
3.3MB

Download
memory/3468-36-0x00000000066B0000-0x0000000006746000-memory.dmp

Filesize
600KB

Download
memory/3468-42-0x0000000075360000-0x0000000075B10000-memory.dmp

Filesize
7.7MB

Download
memory/3468-22-0x0000000005950000-0x00000000059B6000-memory.dmp

Filesize
408KB

Download
memory/3468-23-0x0000000005AC0000-0x0000000005B26000-memory.dmp

Filesize
408KB

Download
memory/3468-20-0x0000000075360000-0x0000000075B10000-memory.dmp

Filesize
7.7MB

Download
memory/3468-19-0x00000000052B0000-0x00000000058D8000-memory.dmp

Filesize
6.2MB

Download
memory/3468-17-0x0000000002830000-0x0000000002866000-memory.dmp

Filesize
216KB

Download
memory/3864-14-0x0000000075360000-0x0000000075B10000-memory.dmp

Filesize
7.7MB

Download
memory/3864-11-0x0000000075360000-0x0000000075B10000-memory.dmp

Filesize
7.7MB

Download
memory/3864-10-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/3864-13-0x0000000075360000-0x0000000075B10000-memory.dmp

Filesize
7.7MB

Download
memory/3864-12-0x0000000075360000-0x0000000075B10000-memory.dmp

Filesize
7.7MB

Download
memory/4920-9-0x00000000051E0000-0x0000000005202000-memory.dmp

Filesize
136KB

Download
memory/4920-0-0x000000007536E000-0x000000007536F000-memory.dmp

Filesize
4KB

Download
memory/4920-16-0x0000000075360000-0x0000000075B10000-memory.dmp

Filesize
7.7MB

Download
memory/4920-8-0x00000000050A0000-0x0000000005176000-memory.dmp

Filesize
856KB

Download
memory/4920-7-0x0000000075360000-0x0000000075B10000-memory.dmp

Filesize
7.7MB

Download
memory/4920-6-0x000000007536E000-0x000000007536F000-memory.dmp

Filesize
4KB

Download
memory/4920-5-0x0000000075360000-0x0000000075B10000-memory.dmp

Filesize
7.7MB

Download
memory/4920-4-0x0000000075360000-0x0000000075B10000-memory.dmp

Filesize
7.7MB

Download
memory/4920-3-0x0000000005450000-0x00000000059F4000-memory.dmp

Filesize
5.6MB

Download
memory/4920-2-0x0000000004D60000-0x0000000004DFC000-memory.dmp

Filesize
624KB

Download
memory/4920-1-0x0000000000230000-0x0000000000398000-memory.dmp

Filesize
1.4MB

Download

Analysis

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