xworm | ad34f6a17ee318591b59ac4fbc300c53808630e4f163b644a58eadc85057348a

General

Target

NetCat Loader.exe
Size

76KB
MD5

1a56b39b62cff3bf7a75a708f6a11762
SHA1

180d91a57ebb95a81bfaa394bca35c123efa916e
SHA256

ad34f6a17ee318591b59ac4fbc300c53808630e4f163b644a58eadc85057348a
SHA512

b86dfa4287e283fd7e734cc3897589c2bb6b98e35f1c82a6ab50f271baf8a9748a125a6c04425ccdf93566ddacb453290a9a63e5fc0d2797b70fb70b6dac03fb
SSDEEP

1536:JqDtM7DwroXh9bSQ6/jyrV9nmRWnXzWb6Alyj:EwblSlryrV9nmwPeyj

Score

10^/10

xworm execution rat trojan

Malware Config

Extracted

Family

xworm

C2

194.59.31.87:1111

Attributes

install_file
USB.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/files/0x000a000000012291-5.dat	family_xworm
behavioral2/memory/1856-8-0x0000000000900000-0x0000000000916000-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
2952	powershell.exe
2644	powershell.exe

Executes dropped EXE 2 IoCs

pid	Process
1856	System32.exe
2212	ekgjoa.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

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
1856	System32.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2952	powershell.exe
2644	powershell.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	1856	System32.exe
Token: SeDebugPrivilege	2952	powershell.exe
Token: SeDebugPrivilege	2644	powershell.exe
Token: SeDebugPrivilege	1856	System32.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 1920 wrote to memory of 1856	1920	NetCat Loader.exe	30
PID 1920 wrote to memory of 1856	1920	NetCat Loader.exe	30
PID 1920 wrote to memory of 1856	1920	NetCat Loader.exe	30
PID 1920 wrote to memory of 2296	1920	NetCat Loader.exe	31
PID 1920 wrote to memory of 2296	1920	NetCat Loader.exe	31
PID 1920 wrote to memory of 2296	1920	NetCat Loader.exe	31
PID 1856 wrote to memory of 2952	1856	System32.exe	33
PID 1856 wrote to memory of 2952	1856	System32.exe	33
PID 1856 wrote to memory of 2952	1856	System32.exe	33
PID 1856 wrote to memory of 2644	1856	System32.exe	35
PID 1856 wrote to memory of 2644	1856	System32.exe	35
PID 1856 wrote to memory of 2644	1856	System32.exe	35
PID 1856 wrote to memory of 2212	1856	System32.exe	38
PID 1856 wrote to memory of 2212	1856	System32.exe	38
PID 1856 wrote to memory of 2212	1856	System32.exe	38
PID 1856 wrote to memory of 2212	1856	System32.exe	38

C:\Users\Admin\AppData\Local\Temp\NetCat Loader.exe
"C:\Users\Admin\AppData\Local\Temp\NetCat Loader.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1920
- C:\Users\Admin\AppData\Roaming\System32.exe
  "C:\Users\Admin\AppData\Roaming\System32.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: AddClipboardFormatListener
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1856
- - 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\Roaming\System32.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2952
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'System32.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2644
- - C:\Users\Admin\AppData\Local\Temp\ekgjoa.exe
    "C:\Users\Admin\AppData\Local\Temp\ekgjoa.exe"
    3⤵
    - Executes dropped EXE
    PID:2212
- C:\Windows\system32\NOTEPAD.EXE
  "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\Thanks For Using.txt
  2⤵
  PID:2296

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\ekgjoa.exe

Filesize
116KB

MD5
567807ffd4dc5918c342138051a07902

SHA1
b2e19490673977db2442a10cab691f6bae2a07de

SHA256
a4ad6bb531bd8268d624f264910b15600f902fd634cef18a500c0f75a25a8042

SHA512
63f776e3df52662dab41e97fe934b08b590a055126db4ba6d829208d627e79ecc367da19e433e981d7f4ea8214d9114673bf10c1b3bd88c12bef63fdbf6379fc

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

Filesize
7KB

MD5
ca117201c1b519ea3bbf25c86fc78884

SHA1
719a8cfc80b8155a60f00d497d05638edfe45fa4

SHA256
f4886b701585629593f187a6289358197dc57c1f937b45903bb13224fa87d8a9

SHA512
df1d02336bbcdb10e3a3a8354459dc72c1f934eb75640cb47fb004617a11099f23491f0601ea0663b5ae23e12a26103c01eb3c2d5d17d212deb2f3837b9d92a0

Download Submit
C:\Users\Admin\AppData\Roaming\System32.exe

Filesize
63KB

MD5
66bbe5829a613fedad7f79e2c6273448

SHA1
57314396a65e08b7bfc5f0b8cdfa9a050579d9d9

SHA256
72499a032c26ef7031b942590e4dd2e28d60b332620c7d2dc42bc4b70995e0dd

SHA512
9b0ea0bb6a4a6ae75c6463f2bc3b5bd012a40a89f491868979230b850b948240b40326c703211edd349911e97a218bf77d01d06f254c33d83939c21a152efae3

Download Submit
C:\Users\Admin\AppData\Roaming\Thanks For Using.txt

Filesize
57B

MD5
f9cfd0c4da0a9a068f8a26ee31c85036

SHA1
ea75b71cfdf7364eacfafcaac0421f9c80a2b4e5

SHA256
e52f33ee65ceb7e5fe9cd47744888c089c37ba7dbadeaf345e75b5cadd43ee2d

SHA512
f81823ed92d8f5aa299d0164f59fb77a3af4c6a9ca5a98e0d4b33104ec7f15ef19037d4bb4f3b2c8c1ca156bac2253f5052eb801468db73d71a67b10405e4b51

Download Submit
memory/1856-8-0x0000000000900000-0x0000000000916000-memory.dmp

Filesize
88KB

Download
memory/1856-10-0x000007FEF5800000-0x000007FEF61EC000-memory.dmp

Filesize
9.9MB

Download
memory/1856-11-0x000007FEF5800000-0x000007FEF61EC000-memory.dmp

Filesize
9.9MB

Download
memory/1856-25-0x000007FEF5800000-0x000007FEF61EC000-memory.dmp

Filesize
9.9MB

Download
memory/1856-31-0x00000000008E0000-0x00000000008EC000-memory.dmp

Filesize
48KB

Download
memory/1920-0-0x000007FEF5803000-0x000007FEF5804000-memory.dmp

Filesize
4KB

Download
memory/1920-1-0x0000000000820000-0x000000000083A000-memory.dmp

Filesize
104KB

Download
memory/2644-23-0x000000001B670000-0x000000001B952000-memory.dmp

Filesize
2.9MB

Download
memory/2644-24-0x0000000002240000-0x0000000002248000-memory.dmp

Filesize
32KB

Download
memory/2952-16-0x000000001B740000-0x000000001BA22000-memory.dmp

Filesize
2.9MB

Download
memory/2952-17-0x0000000001E10000-0x0000000001E18000-memory.dmp

Filesize
32KB

Download

Analysis

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