xworm | 585d1fb4f288974b683c5abfb10c97d7d2ae3f59c2bcfd78ba272e3be2cd7815

Analysis

max time kernel
120s
max time network
143s
platform
windows7_x64
resource
win7-20231130-en
resource tags

arch:x64arch:x86image:win7-20231130-enlocale:en-usos:windows7-x64system
submitted
07-12-2023 12:45

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General

Target

msfiler.exe
Size

419KB
MD5

8a716466aa6f2d425ec09770626e8e54
SHA1

62fb757ea5098651331f91c1664db9fe46b21879
SHA256

585d1fb4f288974b683c5abfb10c97d7d2ae3f59c2bcfd78ba272e3be2cd7815
SHA512

54f11067e400347834689b4532ae53b00ec96a3ca90a2c21de27942f4ca30306fdda0522c1a3a4cde047ad650162e2d8313205220acaab4cc60e010965690940
SSDEEP

6144:QTCsE3O4yuS5O0RBOInaCa6G6ypdf4Bf7e/DnjBeq04fVXOUvE0CGsSE9BLM:2E3O5uOO0mInnGZCTS84fZLtw

Score

10^/10

xworm rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

5.182.87.154:7000

Mutex

VMFidhoqn75fm5lJ

Attributes

Install_directory
%Temp%
install_file
mdnsresp.exe

aes.plain

Signatures

Detect Xworm Payload 5 IoCs

resource	yara_rule
behavioral1/memory/2280-21-0x0000000000400000-0x0000000000410000-memory.dmp	family_xworm
behavioral1/memory/2280-19-0x0000000000400000-0x0000000000410000-memory.dmp	family_xworm
behavioral1/memory/2280-17-0x0000000000400000-0x0000000000410000-memory.dmp	family_xworm
behavioral1/memory/2280-13-0x0000000000400000-0x0000000000410000-memory.dmp	family_xworm
behavioral1/memory/2280-11-0x0000000000400000-0x0000000000410000-memory.dmp	family_xworm

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

Drops startup file 2 IoCs

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

Loads dropped DLL 1 IoCs

pid	Process
2280	msfiler.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2220 set thread context of 2280	2220	msfiler.exe	29

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2128	powershell.exe
2784	powershell.exe
2980	powershell.exe
1540	powershell.exe
2692	powershell.exe
2280	msfiler.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeDebugPrivilege	2220	msfiler.exe
Token: SeDebugPrivilege	2280	msfiler.exe
Token: SeDebugPrivilege	2128	powershell.exe
Token: SeDebugPrivilege	2784	powershell.exe
Token: SeDebugPrivilege	2980	powershell.exe
Token: SeDebugPrivilege	1540	powershell.exe
Token: SeDebugPrivilege	2692	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2280	msfiler.exe

Suspicious use of WriteProcessMemory 29 IoCs

description	pid	Process	procid_target
PID 2220 wrote to memory of 2128	2220	msfiler.exe	30
PID 2220 wrote to memory of 2128	2220	msfiler.exe	30
PID 2220 wrote to memory of 2128	2220	msfiler.exe	30
PID 2220 wrote to memory of 2128	2220	msfiler.exe	30
PID 2220 wrote to memory of 2280	2220	msfiler.exe	29
PID 2220 wrote to memory of 2280	2220	msfiler.exe	29
PID 2220 wrote to memory of 2280	2220	msfiler.exe	29
PID 2220 wrote to memory of 2280	2220	msfiler.exe	29
PID 2220 wrote to memory of 2280	2220	msfiler.exe	29
PID 2220 wrote to memory of 2280	2220	msfiler.exe	29
PID 2220 wrote to memory of 2280	2220	msfiler.exe	29
PID 2220 wrote to memory of 2280	2220	msfiler.exe	29
PID 2220 wrote to memory of 2280	2220	msfiler.exe	29
PID 2280 wrote to memory of 2784	2280	msfiler.exe	32
PID 2280 wrote to memory of 2784	2280	msfiler.exe	32
PID 2280 wrote to memory of 2784	2280	msfiler.exe	32
PID 2280 wrote to memory of 2784	2280	msfiler.exe	32
PID 2280 wrote to memory of 2980	2280	msfiler.exe	34
PID 2280 wrote to memory of 2980	2280	msfiler.exe	34
PID 2280 wrote to memory of 2980	2280	msfiler.exe	34
PID 2280 wrote to memory of 2980	2280	msfiler.exe	34
PID 2280 wrote to memory of 1540	2280	msfiler.exe	38
PID 2280 wrote to memory of 1540	2280	msfiler.exe	38
PID 2280 wrote to memory of 1540	2280	msfiler.exe	38
PID 2280 wrote to memory of 1540	2280	msfiler.exe	38
PID 2280 wrote to memory of 2692	2280	msfiler.exe	37
PID 2280 wrote to memory of 2692	2280	msfiler.exe	37
PID 2280 wrote to memory of 2692	2280	msfiler.exe	37
PID 2280 wrote to memory of 2692	2280	msfiler.exe	37

C:\Users\Admin\AppData\Local\Temp\msfiler.exe
"C:\Users\Admin\AppData\Local\Temp\msfiler.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2220
- C:\Users\Admin\AppData\Local\Temp\msfiler.exe
  C:\Users\Admin\AppData\Local\Temp\msfiler.exe
  2⤵
  - Drops startup file
  - Loads dropped DLL
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2280
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\msfiler.exe'
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2784
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'msfiler.exe'
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2980
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'mdnsresp.exe'
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2692
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\mdnsresp.exe'
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1540
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc QQBkAGQALQBNAHAAUAByAGUAZgBlAHIAZQBuAGMAZQAgAC0ARQB4AGMAbAB1AHMAaQBvAG4AUABhAHQAaAAgAEMAOgBcAFUAcwBlAHIAcwBcAEEAZABtAGkAbgBcAEEAcABwAEQAYQB0AGEAXABMAG8AYwBhAGwAXABUAGUAbQBwAFwAbQBzAGYAaQBsAGUAcgAuAGUAeABlADsAIABBAGQAZAAtAE0AcABQAHIAZQBmAGUAcgBlAG4AYwBlACAALQBFAHgAYwBsAHUAcwBpAG8AbgBQAHIAbwBjAGUAcwBzACAAbQBzAGYAaQBsAGUAcgAuAGUAeABlADsA
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2128

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\T1W4V5AD2EP15K8LTUK9.temp

Filesize
7KB

MD5
56a8cf72782661c7726a1d1a16d265d9

SHA1
ad13567a6506f27a47f85cbf5cd7eff191f179de

SHA256
bcb80593a0f1b50ed1490b13ccdbd3e155fd6aa39007e5dfd5009df2e56fe13b

SHA512
ce93d8c77e63362c747584ca9f6019128e2e8c5f85633d2154d235ce8b5583c952a47b218e51df3e34a3d51481d4247e731ba67a36de4b809cc2441e0fa51f4a

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

Filesize
7KB

MD5
56a8cf72782661c7726a1d1a16d265d9

SHA1
ad13567a6506f27a47f85cbf5cd7eff191f179de

SHA256
bcb80593a0f1b50ed1490b13ccdbd3e155fd6aa39007e5dfd5009df2e56fe13b

SHA512
ce93d8c77e63362c747584ca9f6019128e2e8c5f85633d2154d235ce8b5583c952a47b218e51df3e34a3d51481d4247e731ba67a36de4b809cc2441e0fa51f4a

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

Filesize
7KB

MD5
56a8cf72782661c7726a1d1a16d265d9

SHA1
ad13567a6506f27a47f85cbf5cd7eff191f179de

SHA256
bcb80593a0f1b50ed1490b13ccdbd3e155fd6aa39007e5dfd5009df2e56fe13b

SHA512
ce93d8c77e63362c747584ca9f6019128e2e8c5f85633d2154d235ce8b5583c952a47b218e51df3e34a3d51481d4247e731ba67a36de4b809cc2441e0fa51f4a

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

Filesize
7KB

MD5
56a8cf72782661c7726a1d1a16d265d9

SHA1
ad13567a6506f27a47f85cbf5cd7eff191f179de

SHA256
bcb80593a0f1b50ed1490b13ccdbd3e155fd6aa39007e5dfd5009df2e56fe13b

SHA512
ce93d8c77e63362c747584ca9f6019128e2e8c5f85633d2154d235ce8b5583c952a47b218e51df3e34a3d51481d4247e731ba67a36de4b809cc2441e0fa51f4a

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

Filesize
7KB

MD5
56a8cf72782661c7726a1d1a16d265d9

SHA1
ad13567a6506f27a47f85cbf5cd7eff191f179de

SHA256
bcb80593a0f1b50ed1490b13ccdbd3e155fd6aa39007e5dfd5009df2e56fe13b

SHA512
ce93d8c77e63362c747584ca9f6019128e2e8c5f85633d2154d235ce8b5583c952a47b218e51df3e34a3d51481d4247e731ba67a36de4b809cc2441e0fa51f4a

Download Submit
\Users\Admin\AppData\Local\Temp\mdnsresp.exe

Filesize
419KB

MD5
8a716466aa6f2d425ec09770626e8e54

SHA1
62fb757ea5098651331f91c1664db9fe46b21879

SHA256
585d1fb4f288974b683c5abfb10c97d7d2ae3f59c2bcfd78ba272e3be2cd7815

SHA512
54f11067e400347834689b4532ae53b00ec96a3ca90a2c21de27942f4ca30306fdda0522c1a3a4cde047ad650162e2d8313205220acaab4cc60e010965690940

Download Submit
memory/1540-62-0x00000000028B0000-0x00000000028F0000-memory.dmp

Filesize
256KB

Download
memory/1540-60-0x00000000028B0000-0x00000000028F0000-memory.dmp

Filesize
256KB

Download
memory/1540-63-0x00000000028B0000-0x00000000028F0000-memory.dmp

Filesize
256KB

Download
memory/1540-64-0x0000000071120000-0x00000000716CB000-memory.dmp

Filesize
5.7MB

Download
memory/1540-59-0x0000000071120000-0x00000000716CB000-memory.dmp

Filesize
5.7MB

Download
memory/1540-61-0x0000000071120000-0x00000000716CB000-memory.dmp

Filesize
5.7MB

Download
memory/2128-26-0x00000000716D0000-0x0000000071C7B000-memory.dmp

Filesize
5.7MB

Download
memory/2128-28-0x0000000002A90000-0x0000000002AD0000-memory.dmp

Filesize
256KB

Download
memory/2128-29-0x0000000002A90000-0x0000000002AD0000-memory.dmp

Filesize
256KB

Download
memory/2128-27-0x00000000716D0000-0x0000000071C7B000-memory.dmp

Filesize
5.7MB

Download
memory/2128-30-0x00000000716D0000-0x0000000071C7B000-memory.dmp

Filesize
5.7MB

Download
memory/2220-0-0x0000000001330000-0x00000000013A0000-memory.dmp

Filesize
448KB

Download
memory/2220-22-0x0000000074630000-0x0000000074D1E000-memory.dmp

Filesize
6.9MB

Download
memory/2220-6-0x0000000000C90000-0x0000000000CDC000-memory.dmp

Filesize
304KB

Download
memory/2220-5-0x00000000006A0000-0x00000000006D0000-memory.dmp

Filesize
192KB

Download
memory/2220-4-0x0000000000310000-0x0000000000340000-memory.dmp

Filesize
192KB

Download
memory/2220-2-0x0000000004E40000-0x0000000004E80000-memory.dmp

Filesize
256KB

Download
memory/2220-3-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download
memory/2220-1-0x0000000074630000-0x0000000074D1E000-memory.dmp

Filesize
6.9MB

Download
memory/2280-11-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2280-83-0x0000000004DE0000-0x0000000004E20000-memory.dmp

Filesize
256KB

Download
memory/2280-82-0x0000000074630000-0x0000000074D1E000-memory.dmp

Filesize
6.9MB

Download
memory/2280-85-0x0000000004DE0000-0x0000000004E20000-memory.dmp

Filesize
256KB

Download
memory/2280-7-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2280-9-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2280-13-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2280-15-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2280-17-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2280-19-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2280-21-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2280-23-0x0000000074630000-0x0000000074D1E000-memory.dmp

Filesize
6.9MB

Download
memory/2692-74-0x00000000716D0000-0x0000000071C7B000-memory.dmp

Filesize
5.7MB

Download
memory/2692-71-0x0000000002E20000-0x0000000002E60000-memory.dmp

Filesize
256KB

Download
memory/2692-70-0x00000000716D0000-0x0000000071C7B000-memory.dmp

Filesize
5.7MB

Download
memory/2692-72-0x00000000716D0000-0x0000000071C7B000-memory.dmp

Filesize
5.7MB

Download
memory/2692-84-0x0000000002E20000-0x0000000002E60000-memory.dmp

Filesize
256KB

Download
memory/2692-75-0x0000000002E20000-0x0000000002E60000-memory.dmp

Filesize
256KB

Download
memory/2692-73-0x00000000716D0000-0x0000000071C7B000-memory.dmp

Filesize
5.7MB

Download
memory/2784-38-0x0000000071120000-0x00000000716CB000-memory.dmp

Filesize
5.7MB

Download
memory/2784-39-0x0000000071120000-0x00000000716CB000-memory.dmp

Filesize
5.7MB

Download
memory/2784-40-0x0000000002A40000-0x0000000002A80000-memory.dmp

Filesize
256KB

Download
memory/2784-42-0x0000000071120000-0x00000000716CB000-memory.dmp

Filesize
5.7MB

Download
memory/2784-41-0x0000000002A40000-0x0000000002A80000-memory.dmp

Filesize
256KB

Download
memory/2784-36-0x0000000071120000-0x00000000716CB000-memory.dmp

Filesize
5.7MB

Download
memory/2784-37-0x0000000002A40000-0x0000000002A80000-memory.dmp

Filesize
256KB

Download
memory/2980-52-0x00000000028D0000-0x0000000002910000-memory.dmp

Filesize
256KB

Download
memory/2980-48-0x00000000716D0000-0x0000000071C7B000-memory.dmp

Filesize
5.7MB

Download
memory/2980-49-0x00000000028D0000-0x0000000002910000-memory.dmp

Filesize
256KB

Download
memory/2980-50-0x00000000716D0000-0x0000000071C7B000-memory.dmp

Filesize
5.7MB

Download
memory/2980-53-0x00000000716D0000-0x0000000071C7B000-memory.dmp

Filesize
5.7MB

Download
memory/2980-51-0x00000000028D0000-0x0000000002910000-memory.dmp

Filesize
256KB

Download