xworm | b708ee49186388dc9f334877985ee25c2ade79aca53c710dad8ee458c2dd4e40

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240730-en
resource tags

arch:x64arch:x86image:win10v2004-20240730-enlocale:en-usos:windows10-2004-x64system
submitted
01-08-2024 21:30

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General

Target

cmd.exe
Size

223KB
MD5

12982ac83ad56a6498cb35ac809a372d
SHA1

3f1d1b2ec2d8a66b5f34ca52bddf92f095ecbe1e
SHA256

b708ee49186388dc9f334877985ee25c2ade79aca53c710dad8ee458c2dd4e40
SHA512

93eb087005e04ae00fa4e50d45bded5f7867edb0d3b1a59bf912ec7c0a8d3eb9a8695c6fb97c6d4c2baf54323916456625e228ecfff42327c4083a037ff6749e
SSDEEP

3072:59nbq6SB3q+8BpxITV1nr/6ENVvncMxBJEHBAnpK37nX7880u5Q1tEPsY74tyJh1:e8BIHnr/6wtVx+8ecEPHE9o1r/Z

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

Mutex

pIY7szY7mQ1Jy6Fv

Attributes

Install_directory
%Temp%
install_file
USB.exe
pastebin_url
https://pastebin.com/raw/AsXpMYtv

aes.plain

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral2/memory/3500-37-0x0000000001150000-0x0000000001160000-memory.dmp	family_xworm

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

Command and Scripting Interpreter: PowerShell 1 TTPs 6 IoCs

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

execution

PowerShell

T1059.001

pid	Process
4960	powershell.exe
3088	powershell.exe
5004	powershell.exe
1756	powershell.exe
1604	powershell.exe
532	powershell.exe

Checks computer location settings 2 TTPs 2 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-1-5-21-857544305-989156968-2929034274-1000\Control Panel\International\Geo\Nation	cmd.exe
Key value queried	\REGISTRY\USER\S-1-5-21-857544305-989156968-2929034274-1000\Control Panel\International\Geo\Nation	svchost.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\08D439F05E7CC6A92305A91F0A6E046E.lnk	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\08D439F05E7CC6A92305A91F0A6E046E.lnk	svchost.exe

Executes dropped EXE 3 IoCs

pid	Process
3500	svchost.exe
916	08D439F05E7CC6A92305A91F0A6E046E
4348	08D439F05E7CC6A92305A91F0A6E046E

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-857544305-989156968-2929034274-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\08D439F05E7CC6A92305A91F0A6E046E = "C:\\Users\\Admin\\AppData\\Local\\Temp\\08D439F05E7CC6A92305A91F0A6E046E"	svchost.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
12	pastebin.com
13	pastebin.com

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2688	schtasks.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
532	powershell.exe
532	powershell.exe
4960	powershell.exe
4960	powershell.exe
3088	powershell.exe
3088	powershell.exe
5004	powershell.exe
5004	powershell.exe
1756	powershell.exe
1756	powershell.exe
1604	powershell.exe
1604	powershell.exe

Suspicious use of AdjustPrivilegeToken 10 IoCs

description	pid	Process
Token: SeDebugPrivilege	4204	cmd.exe
Token: SeDebugPrivilege	532	powershell.exe
Token: SeDebugPrivilege	4960	powershell.exe
Token: SeDebugPrivilege	3500	svchost.exe
Token: SeDebugPrivilege	3088	powershell.exe
Token: SeDebugPrivilege	5004	powershell.exe
Token: SeDebugPrivilege	1756	powershell.exe
Token: SeDebugPrivilege	1604	powershell.exe
Token: SeDebugPrivilege	916	08D439F05E7CC6A92305A91F0A6E046E
Token: SeDebugPrivilege	4348	08D439F05E7CC6A92305A91F0A6E046E

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 4204 wrote to memory of 532	4204	cmd.exe	83
PID 4204 wrote to memory of 532	4204	cmd.exe	83
PID 4204 wrote to memory of 4960	4204	cmd.exe	88
PID 4204 wrote to memory of 4960	4204	cmd.exe	88
PID 3500 wrote to memory of 3088	3500	svchost.exe	91
PID 3500 wrote to memory of 3088	3500	svchost.exe	91
PID 3500 wrote to memory of 5004	3500	svchost.exe	93
PID 3500 wrote to memory of 5004	3500	svchost.exe	93
PID 3500 wrote to memory of 1756	3500	svchost.exe	95
PID 3500 wrote to memory of 1756	3500	svchost.exe	95
PID 3500 wrote to memory of 1604	3500	svchost.exe	97
PID 3500 wrote to memory of 1604	3500	svchost.exe	97
PID 3500 wrote to memory of 2688	3500	svchost.exe	99
PID 3500 wrote to memory of 2688	3500	svchost.exe	99

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\cmd.exe
"C:\Users\Admin\AppData\Local\Temp\cmd.exe"
1⤵
- Checks computer location settings
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4204
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\svchost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:532
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svchost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4960

C:\Users\Admin\AppData\Local\Temp\svchost.exe
C:\Users\Admin\AppData\Local\Temp\svchost.exe
1⤵
- Checks computer location settings
- Drops startup file
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3500
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\svchost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3088
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svchost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:5004
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\08D439F05E7CC6A92305A91F0A6E046E'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1756
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess '08D439F05E7CC6A92305A91F0A6E046E'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1604
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "08D439F05E7CC6A92305A91F0A6E046E" /tr "C:\Users\Admin\AppData\Local\Temp\08D439F05E7CC6A92305A91F0A6E046E"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2688

C:\Users\Admin\AppData\Local\Temp\08D439F05E7CC6A92305A91F0A6E046E
C:\Users\Admin\AppData\Local\Temp\08D439F05E7CC6A92305A91F0A6E046E
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:916

C:\Users\Admin\AppData\Local\Temp\08D439F05E7CC6A92305A91F0A6E046E
C:\Users\Admin\AppData\Local\Temp\08D439F05E7CC6A92305A91F0A6E046E
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4348

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\08D439F05E7CC6A92305A91F0A6E046E.log

Filesize
1KB

MD5
fe1d7aaec1f8e21554b2dea87bb42a6e

SHA1
950dd9254713ada2269bd96aaf12a08c4828f0bc

SHA256
471356f5b299eaaaf1856e0f3d93a94c68321a326f5210a952e93ddb3848647c

SHA512
7ada22e7d6902659e998ef5e3987ace84f79533dc42696a20aa7a75d21b5a1fcc70076ec85b0951ac72880947083ce4854eeae64ea0b614fbdac369dfe52e01d

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

Filesize
2KB

MD5
d85ba6ff808d9e5444a4b369f5bc2730

SHA1
31aa9d96590fff6981b315e0b391b575e4c0804a

SHA256
84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

SHA512
8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

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

Filesize
944B

MD5
6d3e9c29fe44e90aae6ed30ccf799ca8

SHA1
c7974ef72264bbdf13a2793ccf1aed11bc565dce

SHA256
2360634e63e8f0b5748e2c56ebb8f4aa78e71008ea7b5c9ca1c49be03b49557d

SHA512
60c38c4367352537545d859f64b9c5cbada94240478d1d039fd27b5ecba4dc1c90051557c16d802269703b873546ead416279c0a80c6fd5e49ad361cef22596a

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

Filesize
944B

MD5
eb1ad317bd25b55b2bbdce8a28a74a94

SHA1
98a3978be4d10d62e7411946474579ee5bdc5ea6

SHA256
9e94e7c9ac6134ee30e79498558aa1a5a1ac79a643666c3f8922eed215dd3a98

SHA512
d011f266c0240d84470c0f9577cd9e4927309bd19bb38570ca9704ed8e1d159f9bea982a59d3eefef72ce7a10bd81208b82e88ef57c7af587f7437a89769adc0

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

Filesize
944B

MD5
a2c8179aaa149c0b9791b73ce44c04d1

SHA1
703361b0d43ec7f669304e7c0ffbbfdeb1e484ff

SHA256
c1d30342a40a2b6e7553da30ceb85754d33820f6fbb3bbbed1ceb30d6390de4a

SHA512
2e201dd457d055baad86f68c15bcc7beb48d6dc2ffc10db7f304eb93f697e7b45991cbde857d25da2c9c60c23f3e13df8b5ed5809c1753737a23096e296cc9e3

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

Filesize
944B

MD5
04f1d68afbed6b13399edfae1e9b1472

SHA1
8bfdcb687a995e4a63a8c32df2c66dc89f91a8b0

SHA256
f358f33a42122e97c489fad7bbc8beab2eb42d42e4ec7fce0dd61fe6d8c0b8de

SHA512
30c5e72a8134992094d937d2588f7a503b1d6407d11afe0265b7c8b0ce14071925e5caed13fc4f9c28705df4c7aed3601f81b007048b148af274d7784aa5fb75

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

Filesize
944B

MD5
993af531f0b57e8128ec273731c3a8e2

SHA1
a42ea55876f4f390837dd2c95fb7ff2344b6e9e1

SHA256
fff934d70d813381536d272c5b8ac6ad70acd054267b13592da767c9bd1dda62

SHA512
bdf5970ff2ee314dc297fce5c0f44765e77acbf269cd9ad9e7448a391d5f80d66a0c5426f99bc3480851e8763413aa180b3b3b6b22ef0e86a365450cb8c334e4

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_qip15wks.4kw.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\svchost.exe

Filesize
223KB

MD5
12982ac83ad56a6498cb35ac809a372d

SHA1
3f1d1b2ec2d8a66b5f34ca52bddf92f095ecbe1e

SHA256
b708ee49186388dc9f334877985ee25c2ade79aca53c710dad8ee458c2dd4e40

SHA512
93eb087005e04ae00fa4e50d45bded5f7867edb0d3b1a59bf912ec7c0a8d3eb9a8695c6fb97c6d4c2baf54323916456625e228ecfff42327c4083a037ff6749e

Download Submit
memory/532-12-0x00007FF9F9570000-0x00007FF9FA031000-memory.dmp

Filesize
10.8MB

Download
memory/532-17-0x00007FF9F9570000-0x00007FF9FA031000-memory.dmp

Filesize
10.8MB

Download
memory/532-14-0x00007FF9F9570000-0x00007FF9FA031000-memory.dmp

Filesize
10.8MB

Download
memory/532-13-0x00007FF9F9570000-0x00007FF9FA031000-memory.dmp

Filesize
10.8MB

Download
memory/532-7-0x000001F3F47F0000-0x000001F3F4812000-memory.dmp

Filesize
136KB

Download
memory/3500-37-0x0000000001150000-0x0000000001160000-memory.dmp

Filesize
64KB

Download
memory/4204-32-0x00007FF9F9570000-0x00007FF9FA031000-memory.dmp

Filesize
10.8MB

Download
memory/4204-36-0x00007FF9F9570000-0x00007FF9FA031000-memory.dmp

Filesize
10.8MB

Download
memory/4204-0-0x00007FF9F9573000-0x00007FF9F9575000-memory.dmp

Filesize
8KB

Download
memory/4204-1-0x00000000005F0000-0x000000000062E000-memory.dmp

Filesize
248KB

Download