xworm | b2e9b488e12360fc455512ddae99dba10dd455df423853875e89ac1ffbdd06be

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
16/11/2024, 11:30

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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 1 IoCs

resource	yara_rule
behavioral2/memory/1836-4-0x0000000000400000-0x000000000040E000-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
3844	powershell.exe
652	powershell.exe

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-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	regasm.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2032 set thread context of 1836	2032	b2e9b488e12360fc455512ddae99dba10dd455df423853875e89ac1ffbdd06be.exe	84

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 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	regasm.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 4 IoCs

pid	Process
3844	powershell.exe
3844	powershell.exe
652	powershell.exe
652	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1836	regasm.exe
Token: SeDebugPrivilege	3844	powershell.exe
Token: SeDebugPrivilege	652	powershell.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2032 wrote to memory of 1836	2032	b2e9b488e12360fc455512ddae99dba10dd455df423853875e89ac1ffbdd06be.exe	84
PID 2032 wrote to memory of 1836	2032	b2e9b488e12360fc455512ddae99dba10dd455df423853875e89ac1ffbdd06be.exe	84
PID 2032 wrote to memory of 1836	2032	b2e9b488e12360fc455512ddae99dba10dd455df423853875e89ac1ffbdd06be.exe	84
PID 2032 wrote to memory of 1836	2032	b2e9b488e12360fc455512ddae99dba10dd455df423853875e89ac1ffbdd06be.exe	84
PID 2032 wrote to memory of 1836	2032	b2e9b488e12360fc455512ddae99dba10dd455df423853875e89ac1ffbdd06be.exe	84
PID 2032 wrote to memory of 1836	2032	b2e9b488e12360fc455512ddae99dba10dd455df423853875e89ac1ffbdd06be.exe	84
PID 2032 wrote to memory of 1836	2032	b2e9b488e12360fc455512ddae99dba10dd455df423853875e89ac1ffbdd06be.exe	84
PID 2032 wrote to memory of 1836	2032	b2e9b488e12360fc455512ddae99dba10dd455df423853875e89ac1ffbdd06be.exe	84
PID 1836 wrote to memory of 3844	1836	regasm.exe	96
PID 1836 wrote to memory of 3844	1836	regasm.exe	96
PID 1836 wrote to memory of 3844	1836	regasm.exe	96
PID 1836 wrote to memory of 652	1836	regasm.exe	100
PID 1836 wrote to memory of 652	1836	regasm.exe	100
PID 1836 wrote to memory of 652	1836	regasm.exe	100

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:2032
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1836
- - 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\regasm.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3844
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'regasm.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:652

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

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
968cb9309758126772781b83adb8a28f

SHA1
8da30e71accf186b2ba11da1797cf67f8f78b47c

SHA256
92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a

SHA512
4bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
18KB

MD5
3d928378132a84f574cfd9eec9a46c71

SHA1
e13f8823a41a2adfc3466880242bbc1c811f0521

SHA256
a54631662ae8ad22592e70af8910ac1ff8cccec30b5f6bb39b0306a29be0714e

SHA512
4303d2b09b22878f340889790698c0fa0914a126df25649ba3047fc42c419c59d604b372a3367adb077f5be8e1e2fabbfffafabb7c5b58b1a8e77a203628b504

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_eusptbih.3oj.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/652-65-0x0000000070290000-0x00000000702DC000-memory.dmp

Filesize
304KB

Download
memory/652-63-0x00000000060A0000-0x00000000063F4000-memory.dmp

Filesize
3.3MB

Download
memory/1836-4-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/1836-6-0x0000000005110000-0x00000000051AC000-memory.dmp

Filesize
624KB

Download
memory/1836-79-0x0000000006C30000-0x00000000071D4000-memory.dmp

Filesize
5.6MB

Download
memory/1836-78-0x00000000065E0000-0x0000000006672000-memory.dmp

Filesize
584KB

Download
memory/1836-77-0x0000000074CE0000-0x0000000075490000-memory.dmp

Filesize
7.7MB

Download
memory/1836-76-0x0000000074CE0000-0x0000000075490000-memory.dmp

Filesize
7.7MB

Download
memory/1836-5-0x0000000074CEE000-0x0000000074CEF000-memory.dmp

Filesize
4KB

Download
memory/2032-7-0x00007FFD6D780000-0x00007FFD6E241000-memory.dmp

Filesize
10.8MB

Download
memory/2032-0-0x00007FFD6D783000-0x00007FFD6D785000-memory.dmp

Filesize
8KB

Download
memory/2032-3-0x00007FFD6D780000-0x00007FFD6E241000-memory.dmp

Filesize
10.8MB

Download
memory/2032-2-0x0000025CF3960000-0x0000025CF39C0000-memory.dmp

Filesize
384KB

Download
memory/2032-1-0x0000025CF1C50000-0x0000025CF1C58000-memory.dmp

Filesize
32KB

Download
memory/3844-28-0x00000000066C0000-0x00000000066F2000-memory.dmp

Filesize
200KB

Download
memory/3844-47-0x0000000007650000-0x0000000007664000-memory.dmp

Filesize
80KB

Download
memory/3844-27-0x0000000006130000-0x000000000617C000-memory.dmp

Filesize
304KB

Download
memory/3844-25-0x0000000005C70000-0x0000000005FC4000-memory.dmp

Filesize
3.3MB

Download
memory/3844-29-0x0000000070290000-0x00000000702DC000-memory.dmp

Filesize
304KB

Download
memory/3844-39-0x00000000072B0000-0x00000000072CE000-memory.dmp

Filesize
120KB

Download
memory/3844-40-0x00000000072E0000-0x0000000007383000-memory.dmp

Filesize
652KB

Download
memory/3844-41-0x0000000007A50000-0x00000000080CA000-memory.dmp

Filesize
6.5MB

Download
memory/3844-42-0x0000000007410000-0x000000000742A000-memory.dmp

Filesize
104KB

Download
memory/3844-43-0x0000000007480000-0x000000000748A000-memory.dmp

Filesize
40KB

Download
memory/3844-44-0x0000000007690000-0x0000000007726000-memory.dmp

Filesize
600KB

Download
memory/3844-45-0x0000000007610000-0x0000000007621000-memory.dmp

Filesize
68KB

Download
memory/3844-46-0x0000000007640000-0x000000000764E000-memory.dmp

Filesize
56KB

Download
memory/3844-26-0x00000000060E0000-0x00000000060FE000-memory.dmp

Filesize
120KB

Download
memory/3844-48-0x0000000007750000-0x000000000776A000-memory.dmp

Filesize
104KB

Download
memory/3844-49-0x0000000007730000-0x0000000007738000-memory.dmp

Filesize
32KB

Download
memory/3844-52-0x0000000074CE0000-0x0000000075490000-memory.dmp

Filesize
7.7MB

Download
memory/3844-24-0x0000000074CE0000-0x0000000075490000-memory.dmp

Filesize
7.7MB

Download
memory/3844-12-0x00000000053D0000-0x0000000005436000-memory.dmp

Filesize
408KB

Download
memory/3844-15-0x0000000005440000-0x00000000054A6000-memory.dmp

Filesize
408KB

Download
memory/3844-19-0x0000000074CE0000-0x0000000075490000-memory.dmp

Filesize
7.7MB

Download
memory/3844-11-0x00000000052B0000-0x00000000052D2000-memory.dmp

Filesize
136KB

Download
memory/3844-10-0x0000000005540000-0x0000000005B68000-memory.dmp

Filesize
6.2MB

Download
memory/3844-9-0x0000000074CE0000-0x0000000075490000-memory.dmp

Filesize
7.7MB

Download
memory/3844-8-0x00000000027B0000-0x00000000027E6000-memory.dmp

Filesize
216KB

Download