xworm | 25a1652702fa9475b8cccf57d7e046c5011a89a10c32966fbfd1b97d58879c68

General

Target

86515ecf1b746124a050aaff0a24e0a0.ps1
Size

185KB
MD5

86515ecf1b746124a050aaff0a24e0a0
SHA1

6f4a927c3f4741a04a58ca6115d784c2ed203f4c
SHA256

25a1652702fa9475b8cccf57d7e046c5011a89a10c32966fbfd1b97d58879c68
SHA512

f4a1971a90b3c47479c4e6574af6a765e34fb4e7b2fc59473de2e977420c350a78e84174ea267c970c8f2fd207ae657a5cb330e1300c1e84c43ed2e84f06f440
SSDEEP

3072:PzSrl+8TF6ysLOOLARHhEhTYeO/WE2f50aqSoztiS6VHc8vckTyYlOVnjbPXjiv9:PH8TFz2ARHhEhTYeO/WE2f50aqSozti1

Score

10^/10

xworm discovery execution rat trojan

Malware Config

Extracted

Family

xworm

C2

185.7.214.211:4444

Attributes

install_file
USB.exe

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral2/memory/3912-15-0x0000000000400000-0x0000000000414000-memory.dmp	family_xworm

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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4520 set thread context of 3912	4520	powershell.exe	87

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
4520	powershell.exe

System Location Discovery: System Language Discovery 1 TTPs 1 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	RegSvcs.exe

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	wermgr.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	wermgr.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	wermgr.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	wermgr.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	wermgr.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4520	powershell.exe
4520	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4520	powershell.exe
Token: SeDebugPrivilege	3912	RegSvcs.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4520 wrote to memory of 3912	4520	powershell.exe	87
PID 4520 wrote to memory of 3912	4520	powershell.exe	87
PID 4520 wrote to memory of 3912	4520	powershell.exe	87
PID 4520 wrote to memory of 3912	4520	powershell.exe	87
PID 4520 wrote to memory of 3912	4520	powershell.exe	87
PID 4520 wrote to memory of 3912	4520	powershell.exe	87
PID 4520 wrote to memory of 3912	4520	powershell.exe	87
PID 4520 wrote to memory of 3912	4520	powershell.exe	87
PID 4520 wrote to memory of 1320	4520	powershell.exe	88
PID 4520 wrote to memory of 1320	4520	powershell.exe	88

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\86515ecf1b746124a050aaff0a24e0a0.ps1
1⤵
- Suspicious use of SetThreadContext
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4520
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:3912
- C:\Windows\system32\wermgr.exe
  "C:\Windows\system32\wermgr.exe" "-outproc" "0" "4520" "2204" "1868" "2208" "0" "0" "2212" "0" "0" "0" "0" "0"
  2⤵
  - Checks processor information in registry
  - Enumerates system info in registry
  PID:1320

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

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

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_1yljdyl0.kv4.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/3912-15-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3912-31-0x0000000006460000-0x0000000006A04000-memory.dmp

Filesize
5.6MB

Download
memory/3912-30-0x0000000005E10000-0x0000000005EA2000-memory.dmp

Filesize
584KB

Download
memory/3912-29-0x0000000005470000-0x00000000054D6000-memory.dmp

Filesize
408KB

Download
memory/3912-23-0x0000000004D60000-0x0000000004DFC000-memory.dmp

Filesize
624KB

Download
memory/3912-22-0x0000000074C2E000-0x0000000074C2F000-memory.dmp

Filesize
4KB

Download
memory/4520-16-0x00007FF944880000-0x00007FF945341000-memory.dmp

Filesize
10.8MB

Download
memory/4520-0-0x00007FF944883000-0x00007FF944885000-memory.dmp

Filesize
8KB

Download
memory/4520-19-0x00007FF944880000-0x00007FF945341000-memory.dmp

Filesize
10.8MB

Download
memory/4520-14-0x0000020A61210000-0x0000020A61216000-memory.dmp

Filesize
24KB

Download
memory/4520-13-0x0000020A611F0000-0x0000020A6120A000-memory.dmp

Filesize
104KB

Download
memory/4520-28-0x00007FF944880000-0x00007FF945341000-memory.dmp

Filesize
10.8MB

Download
memory/4520-12-0x00007FF944880000-0x00007FF945341000-memory.dmp

Filesize
10.8MB

Download
memory/4520-11-0x00007FF944880000-0x00007FF945341000-memory.dmp

Filesize
10.8MB

Download
memory/4520-2-0x0000020A60EC0000-0x0000020A60EE2000-memory.dmp

Filesize
136KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads