xworm | b2e9b488e12360fc455512ddae99dba10dd455df423853875e89ac1ffbdd06be

Analysis

max time kernel
121s
max time network
144s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
17-11-2024 08:45

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General

Target

b2e9b488e12360fc455512ddae99dba10dd455df423853875e89ac1ffbdd06be.exe
Size

1.3MB
MD5

5e8c689ae7f342a2b2dcf76ad9f990d4
SHA1

dc659d8c8284c0ec2d5cd4b0c4dd3a250d481331
SHA256

b2e9b488e12360fc455512ddae99dba10dd455df423853875e89ac1ffbdd06be
SHA512

46bd683b51c45cc92d5b35c236d8e339ab808cd87465eebd7f1a96ccdb28f994e0048a185a46a68dfd106e6fdd6e46a75c85caea180c03ac20ca2e3e778e64c9
SSDEEP

12288:0kjmrocDPyNhuTsAGBDNMrRbeyBYidXG4LrXFb2N:0ZbPyNqsAwyFCreDJKN

Score

10^/10

xworm discovery execution rat trojan

Malware Config

Extracted

Family

xworm

Version

3.1

savelat19847.duckdns.org:7000

Mutex

6FO7gyeQQmt4IGRZ

Attributes

install_file
USB.exe

aes.plain

Signatures

Detect Xworm Payload 5 IoCs

resource	yara_rule
behavioral1/memory/3012-10-0x0000000000400000-0x000000000040E000-memory.dmp	family_xworm
behavioral1/memory/3012-8-0x0000000000400000-0x000000000040E000-memory.dmp	family_xworm
behavioral1/memory/3012-13-0x0000000000400000-0x000000000040E000-memory.dmp	family_xworm
behavioral1/memory/3012-17-0x0000000000400000-0x000000000040E000-memory.dmp	family_xworm
behavioral1/memory/3012-15-0x0000000000400000-0x000000000040E000-memory.dmp	family_xworm

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

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
2812	powershell.exe
2864	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2128 set thread context of 3012	2128	b2e9b488e12360fc455512ddae99dba10dd455df423853875e89ac1ffbdd06be.exe	32

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	installutil.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2812	powershell.exe
2864	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	3012	installutil.exe
Token: SeDebugPrivilege	2812	powershell.exe
Token: SeDebugPrivilege	2864	powershell.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 2128 wrote to memory of 2960	2128	b2e9b488e12360fc455512ddae99dba10dd455df423853875e89ac1ffbdd06be.exe	31
PID 2128 wrote to memory of 2960	2128	b2e9b488e12360fc455512ddae99dba10dd455df423853875e89ac1ffbdd06be.exe	31
PID 2128 wrote to memory of 2960	2128	b2e9b488e12360fc455512ddae99dba10dd455df423853875e89ac1ffbdd06be.exe	31
PID 2128 wrote to memory of 2960	2128	b2e9b488e12360fc455512ddae99dba10dd455df423853875e89ac1ffbdd06be.exe	31
PID 2128 wrote to memory of 3012	2128	b2e9b488e12360fc455512ddae99dba10dd455df423853875e89ac1ffbdd06be.exe	32
PID 2128 wrote to memory of 3012	2128	b2e9b488e12360fc455512ddae99dba10dd455df423853875e89ac1ffbdd06be.exe	32
PID 2128 wrote to memory of 3012	2128	b2e9b488e12360fc455512ddae99dba10dd455df423853875e89ac1ffbdd06be.exe	32
PID 2128 wrote to memory of 3012	2128	b2e9b488e12360fc455512ddae99dba10dd455df423853875e89ac1ffbdd06be.exe	32
PID 2128 wrote to memory of 3012	2128	b2e9b488e12360fc455512ddae99dba10dd455df423853875e89ac1ffbdd06be.exe	32
PID 2128 wrote to memory of 3012	2128	b2e9b488e12360fc455512ddae99dba10dd455df423853875e89ac1ffbdd06be.exe	32
PID 2128 wrote to memory of 3012	2128	b2e9b488e12360fc455512ddae99dba10dd455df423853875e89ac1ffbdd06be.exe	32
PID 2128 wrote to memory of 3012	2128	b2e9b488e12360fc455512ddae99dba10dd455df423853875e89ac1ffbdd06be.exe	32
PID 2128 wrote to memory of 3012	2128	b2e9b488e12360fc455512ddae99dba10dd455df423853875e89ac1ffbdd06be.exe	32
PID 2128 wrote to memory of 3012	2128	b2e9b488e12360fc455512ddae99dba10dd455df423853875e89ac1ffbdd06be.exe	32
PID 2128 wrote to memory of 3012	2128	b2e9b488e12360fc455512ddae99dba10dd455df423853875e89ac1ffbdd06be.exe	32
PID 2128 wrote to memory of 3012	2128	b2e9b488e12360fc455512ddae99dba10dd455df423853875e89ac1ffbdd06be.exe	32
PID 2128 wrote to memory of 1740	2128	b2e9b488e12360fc455512ddae99dba10dd455df423853875e89ac1ffbdd06be.exe	33
PID 2128 wrote to memory of 1740	2128	b2e9b488e12360fc455512ddae99dba10dd455df423853875e89ac1ffbdd06be.exe	33
PID 2128 wrote to memory of 1740	2128	b2e9b488e12360fc455512ddae99dba10dd455df423853875e89ac1ffbdd06be.exe	33
PID 3012 wrote to memory of 2812	3012	installutil.exe	34
PID 3012 wrote to memory of 2812	3012	installutil.exe	34
PID 3012 wrote to memory of 2812	3012	installutil.exe	34
PID 3012 wrote to memory of 2812	3012	installutil.exe	34
PID 3012 wrote to memory of 2864	3012	installutil.exe	36
PID 3012 wrote to memory of 2864	3012	installutil.exe	36
PID 3012 wrote to memory of 2864	3012	installutil.exe	36
PID 3012 wrote to memory of 2864	3012	installutil.exe	36

C:\Users\Admin\AppData\Local\Temp\b2e9b488e12360fc455512ddae99dba10dd455df423853875e89ac1ffbdd06be.exe
"C:\Users\Admin\AppData\Local\Temp\b2e9b488e12360fc455512ddae99dba10dd455df423853875e89ac1ffbdd06be.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2128
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\msbuild.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\msbuild.exe"
  2⤵
  PID:2960
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\installutil.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\installutil.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3012
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Windows\Microsoft.NET\Framework\v4.0.30319\installutil.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2812
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'installutil.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2864
- C:\Windows\system32\WerFault.exe
  C:\Windows\system32\WerFault.exe -u -p 2128 -s 664
  2⤵
  PID:1740

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

Filesize
7KB

MD5
5e6371ebb8aaf8d3c711e6e7704d3998

SHA1
7d2af060ab94496df9468970febc26ab9454aeb8

SHA256
fb4b42924908ff4ab4fb0cf4aea4354c378fd8fc4d2986a5882a0cdd400fb860

SHA512
cfab303c6e30fd26d676c0e87ed50f2528c7336239b40b0d99f9bcd5681116e4d7db686e51ec648d6134b95381f08ed83ac8dc16bbbbb6d9f3b15ffec1e64793

Download Submit
memory/2128-0-0x000007FEF5C83000-0x000007FEF5C84000-memory.dmp

Filesize
4KB

Download
memory/2128-1-0x00000000000C0000-0x00000000000C8000-memory.dmp

Filesize
32KB

Download
memory/2128-2-0x000007FEF5C80000-0x000007FEF666C000-memory.dmp

Filesize
9.9MB

Download
memory/2128-3-0x00000000003A0000-0x0000000000400000-memory.dmp

Filesize
384KB

Download
memory/2128-27-0x000007FEF5C80000-0x000007FEF666C000-memory.dmp

Filesize
9.9MB

Download
memory/3012-13-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/3012-4-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/3012-8-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/3012-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/3012-17-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/3012-15-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/3012-18-0x0000000074ADE000-0x0000000074ADF000-memory.dmp

Filesize
4KB

Download
memory/3012-10-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/3012-26-0x0000000074AD0000-0x00000000751BE000-memory.dmp

Filesize
6.9MB

Download
memory/3012-6-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/3012-28-0x0000000074ADE000-0x0000000074ADF000-memory.dmp

Filesize
4KB

Download
memory/3012-29-0x0000000074AD0000-0x00000000751BE000-memory.dmp

Filesize
6.9MB

Download