xworm | 1f4fbb86e1e513b8bed2fa7a011d094e9f4dbb213e7ae8c34693c6f5343442c3

Analysis

max time kernel
150s
max time network
154s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
15/06/2024, 16:13

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General

Target

Prism Release/Prism Release V1.5.exe
Size

5.1MB
MD5

ac80f970a7ae1c07663abdd11d752d34
SHA1

5ee4c0de86dc91aebb47f3ea6b7e624e861fdfad
SHA256

b61ca7c42fef43547c7892c76a925ec4a846373bfcde20426c913a4390f71001
SHA512

7bd6150976477bec27532e7d7449e8a1ee6997b41359f3b31e2da8db0602f1ac0dfae171d8ebe00a0e18c2c77c7f9e4ed18352f7d8cf76c1cff855166ed6f94b
SSDEEP

98304:crjAG8empOd+SyaREAaOeaD5lWsjvi+ffzwZZHUzItLqbn82rh:3ppcNJQkjvi+ffzwZZJiR1

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

91.92.241.69:5555

Attributes

Install_directory
%ProgramData%
install_file
Windows Runtime.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral3/files/0x000d000000012262-2.dat	family_xworm
behavioral3/memory/2292-47-0x0000000000390000-0x00000000003AA000-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

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
2476	powershell.exe
808	powershell.exe
1320	powershell.exe
1340	powershell.exe
2276	powershell.exe
896	powershell.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 3 IoCs

pid	Process
2292	dllhost.exe
2360	Prism Executor.exe
1980	nexusloader.exe

Loads dropped DLL 4 IoCs

pid	Process
1760	Prism Release V1.5.exe
1760	Prism Release V1.5.exe
2360	Prism Executor.exe
1980	nexusloader.exe

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-1-5-21-268080393-3149932598-1824759070-1000\Software\Microsoft\Windows\CurrentVersion\Run\Windows Runtime = "C:\\ProgramData\\Windows Runtime.exe"	dllhost.exe

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
4	ip-api.com

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

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

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

persistence

Scheduled Task/Job

T1053

pid	Process
1068	schtasks.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2292	dllhost.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
2476	powershell.exe
808	powershell.exe
1320	powershell.exe
1340	powershell.exe
2276	powershell.exe
896	powershell.exe
2292	dllhost.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	2292	dllhost.exe
Token: SeDebugPrivilege	2476	powershell.exe
Token: SeDebugPrivilege	808	powershell.exe
Token: SeDebugPrivilege	1320	powershell.exe
Token: SeDebugPrivilege	1340	powershell.exe
Token: SeDebugPrivilege	2276	powershell.exe
Token: SeDebugPrivilege	896	powershell.exe
Token: SeDebugPrivilege	2292	dllhost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2292	dllhost.exe

Suspicious use of WriteProcessMemory 34 IoCs

description	pid	Process	procid_target
PID 1760 wrote to memory of 2476	1760	Prism Release V1.5.exe	28
PID 1760 wrote to memory of 2476	1760	Prism Release V1.5.exe	28
PID 1760 wrote to memory of 2476	1760	Prism Release V1.5.exe	28
PID 1760 wrote to memory of 2476	1760	Prism Release V1.5.exe	28
PID 1760 wrote to memory of 808	1760	Prism Release V1.5.exe	30
PID 1760 wrote to memory of 808	1760	Prism Release V1.5.exe	30
PID 1760 wrote to memory of 808	1760	Prism Release V1.5.exe	30
PID 1760 wrote to memory of 808	1760	Prism Release V1.5.exe	30
PID 1760 wrote to memory of 2292	1760	Prism Release V1.5.exe	32
PID 1760 wrote to memory of 2292	1760	Prism Release V1.5.exe	32
PID 1760 wrote to memory of 2292	1760	Prism Release V1.5.exe	32
PID 1760 wrote to memory of 2292	1760	Prism Release V1.5.exe	32
PID 1760 wrote to memory of 2360	1760	Prism Release V1.5.exe	33
PID 1760 wrote to memory of 2360	1760	Prism Release V1.5.exe	33
PID 1760 wrote to memory of 2360	1760	Prism Release V1.5.exe	33
PID 1760 wrote to memory of 2360	1760	Prism Release V1.5.exe	33
PID 2360 wrote to memory of 1980	2360	Prism Executor.exe	34
PID 2360 wrote to memory of 1980	2360	Prism Executor.exe	34
PID 2360 wrote to memory of 1980	2360	Prism Executor.exe	34
PID 2292 wrote to memory of 1320	2292	dllhost.exe	36
PID 2292 wrote to memory of 1320	2292	dllhost.exe	36
PID 2292 wrote to memory of 1320	2292	dllhost.exe	36
PID 2292 wrote to memory of 1340	2292	dllhost.exe	38
PID 2292 wrote to memory of 1340	2292	dllhost.exe	38
PID 2292 wrote to memory of 1340	2292	dllhost.exe	38
PID 2292 wrote to memory of 2276	2292	dllhost.exe	40
PID 2292 wrote to memory of 2276	2292	dllhost.exe	40
PID 2292 wrote to memory of 2276	2292	dllhost.exe	40
PID 2292 wrote to memory of 896	2292	dllhost.exe	42
PID 2292 wrote to memory of 896	2292	dllhost.exe	42
PID 2292 wrote to memory of 896	2292	dllhost.exe	42
PID 2292 wrote to memory of 1068	2292	dllhost.exe	44
PID 2292 wrote to memory of 1068	2292	dllhost.exe	44
PID 2292 wrote to memory of 1068	2292	dllhost.exe	44

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\Prism Release\Prism Release V1.5.exe
"C:\Users\Admin\AppData\Local\Temp\Prism Release\Prism Release V1.5.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1760
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -EncodedCommand "PAAjAHoAdABtACMAPgBBAGQAZAAtAFQAeQBwAGUAIAAtAEEAcwBzAGUAbQBiAGwAeQBOAGEAbQBlACAAUwB5AHMAdABlAG0ALgBXAGkAbgBkAG8AdwBzAC4ARgBvAHIAbQBzADsAPAAjAHEAegBnACMAPgBbAFMAeQBzAHQAZQBtAC4AVwBpAG4AZABvAHcAcwAuAEYAbwByAG0AcwAuAE0AZQBzAHMAYQBnAGUAQgBvAHgAXQA6ADoAUwBoAG8AdwAoACcALgBnAGcALwBnAGUAdABwAHIAaQBzAG0AIAAtACAAUgB1AG4AIABBAHMAIABBAGQAbQBpAG4AIABJAGYAIABJAG4AagBlAGMAdABpAG8AbgAgAEYAYQBpAGwAcwAnACwAJwAnACwAJwBPAEsAJwAsACcASQBuAGYAbwByAG0AYQB0AGkAbwBuACcAKQA8ACMAdQBzAGQAIwA+AA=="
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2476
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -EncodedCommand "PAAjAGYAdAB2ACMAPgBBAGQAZAAtAE0AcABQAHIAZQBmAGUAcgBlAG4AYwBlACAAPAAjAGYAcQB1ACMAPgAgAC0ARQB4AGMAbAB1AHMAaQBvAG4AUABhAHQAaAAgAEAAKAAkAGUAbgB2ADoAVQBzAGUAcgBQAHIAbwBmAGkAbABlACwAJABlAG4AdgA6AFMAeQBzAHQAZQBtAEQAcgBpAHYAZQApACAAPAAjAHYAdQBwACMAPgAgAC0ARgBvAHIAYwBlACAAPAAjAGYAdwBhACMAPgA="
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:808
- C:\Users\Admin\dllhost.exe
  "C:\Users\Admin\dllhost.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious behavior: AddClipboardFormatListener
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2292
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\dllhost.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1320
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'dllhost.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1340
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\ProgramData\Windows Runtime.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2276
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Windows Runtime.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:896
- - C:\Windows\System32\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "Windows Runtime" /tr "C:\ProgramData\Windows Runtime.exe"
    3⤵
    - Creates scheduled task(s)
    PID:1068
- C:\Users\Admin\Prism Executor.exe
  "C:\Users\Admin\Prism Executor.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:2360
- - C:\Users\Admin\AppData\Local\Temp\onefile_2360_133629416338250000\nexusloader.exe
    "C:\Users\Admin\Prism Executor.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    PID:1980

C:\Windows\system32\taskeng.exe
taskeng.exe {AC294FFD-3FA1-4322-BE18-7D71E18312E8} S-1-5-21-268080393-3149932598-1824759070-1000:UHRQKJCP\Admin:Interactive:[1]
1⤵
PID:1188

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\onefile_2360_133629416338250000\nexusloader.exe

Filesize
3.5MB

MD5
58545dc488990ac11872079d119f8284

SHA1
dade5c16834d582a5187041697cc5a7c2eae2f88

SHA256
6669bd79928492ab626c6cc64de35e3da76d655bbd197b5cc644584014fea5bc

SHA512
93d6e3f6a2ff03b4b58db7c04f8ad00e5c5f95eceefd199b73a8af6009ef381f758825ebe3d0d3076f917299c850b2859fb2ec35eeef59126617d2a0ec54dcd7

Download Submit
C:\Users\Admin\AppData\Local\Temp\onefile_2360_133629416338250000\python310.dll

Filesize
4.2MB

MD5
384349987b60775d6fc3a6d202c3e1bd

SHA1
701cb80c55f859ad4a31c53aa744a00d61e467e5

SHA256
f281c2e252ed59dd96726dbb2de529a2b07b818e9cc3799d1ffa9883e3028ed8

SHA512
6bf3ef9f08f4fc07461b6ea8d9822568ad0a0f211e471b990f62c6713adb7b6be28b90f206a4ec0673b92bae99597d1c7785381e486f6091265c7df85ff0f9b5

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
38833a1399a09d7d1989d926a7b6b354

SHA1
096769dc87b69e20a64e073231cbaa04dd1f93e9

SHA256
147751632d50724c3fe183b717c4a368f01036fa9f1f15dafd44b29b82b874cf

SHA512
e1b957355a359ffb8f9f48414c498592b269f9076ad57a5d9092ab565fed03188e7cddf84187eb4b981596e44ea983fe1143750e7ec9e4ad5e460e1c61a572eb

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\6V1R8KK405L6PBZM977W.temp

Filesize
7KB

MD5
e9f787b399298cb7d62d6f334a9ffd54

SHA1
ea0ecc00ef0f6a4c9f7b52c8fed96c89ba444e18

SHA256
ec00930a690ff604748f7f8c99092b12e27753afd8c5513cc855cd2e5de9b94d

SHA512
0d378e9591585cf7b76e3b1c787cc82baaf23d92c4f0bbc998230a3a4521b92e6d543a081c0d941171e72e080c7075744bf47f218765cd81d1c01e202c87d77b

Download Submit
\Users\Admin\Prism Executor.exe

Filesize
5.0MB

MD5
fa819e23d8fee4ea89aaaea55e0b28f5

SHA1
18335d4e0d140dcab66c7197c57f669251898ce5

SHA256
bb4fbbf322982321c56ac48cb7939ef7cb823b510a184c41e284f2cdf1bab68c

SHA512
e6170df5c8705e96a76cb3b366c9410c8f8e5c5dd5753de9be87e47a1c989b4723dd655e3355d52096f7acd3185a5469ed5bf284e7765e9519522ae132cef07d

Download Submit
\Users\Admin\dllhost.exe

Filesize
78KB

MD5
4a7f75343aaa5a4d8d18add50ccf3139

SHA1
110c62eee6d7deb4aa9d601c942eae43482d2125

SHA256
34be6a934fd45752e788f9ba20943c8e52d91732d76e9f30a5176e98dccd956e

SHA512
1f1516fc41e0b90d0d47e306da15a542799425159f4ad476cf4fd88b9b56d200c79c72ce29ca5b0acf2a195cabe803c37c72b8d76e99a69a04dbfe1fb9f9fc79

Download Submit
memory/1320-1880-0x000000001B620000-0x000000001B902000-memory.dmp

Filesize
2.9MB

Download
memory/1320-1881-0x00000000021D0000-0x00000000021D8000-memory.dmp

Filesize
32KB

Download
memory/1340-1887-0x000000001B620000-0x000000001B902000-memory.dmp

Filesize
2.9MB

Download
memory/1340-1888-0x00000000028F0000-0x00000000028F8000-memory.dmp

Filesize
32KB

Download
memory/2292-47-0x0000000000390000-0x00000000003AA000-memory.dmp

Filesize
104KB

Download