xworm | 8f26c490abbe3b76d42635347d83ffa6387888021d4909fcfd63e3dcc25540d2

Analysis

max time kernel
4s
max time network
5s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
20-04-2024 15:29

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General

Target

Output.exe
Size

98KB
MD5

d7557a4322101418a54b3ba0d973bdb1
SHA1

57ae796673ce3d7d32dc4490f5e331c643aa8228
SHA256

8f26c490abbe3b76d42635347d83ffa6387888021d4909fcfd63e3dcc25540d2
SHA512

d2118512333b3e72eb1fad020082468b6d67689e104fcb4a0bb455c4870b429eff119987ca87d697398572e022a38949f5d3b75c3fd4c6106057d84ff786d773
SSDEEP

1536:ijXg7n3OaMrKTV82jTj5I6Ws5SZYSx8fWL5uWQaIK0naap+/l8NXftTOqg:ijw7n+NKTZFPkZvT5uCIak+/l8lfE

Score

10^/10

xworm rat trojan

Malware Config

Extracted

Family

xworm

million-houston.gl.at.ply.gg:27705

Attributes

Install_directory
%AppData%
install_file
BloxstrapModded.exe

Signatures

Detect Xworm Payload 2 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Roaming\XClient.exe	family_xworm
behavioral1/memory/2080-8-0x0000000000180000-0x000000000019A000-memory.dmp	family_xworm

Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm
Executes dropped EXE 1 IoCs

Processes:

XClient.exe

pid process

2080 XClient.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Opens file in notepad (likely ransom note) 1 IoCs
ransomware

Processes:

NOTEPAD.EXE

pid process

2660 NOTEPAD.EXE
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

XClient.exe

description pid process

Token: SeDebugPrivilege 2080 XClient.exe

pid	process
2080	XClient.exe

pid	process
2660	NOTEPAD.EXE

description	pid	process
Token: SeDebugPrivilege	2080	XClient.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

Output.exe

description	pid	process	target process
PID 2468 wrote to memory of 2080	2468	Output.exe	XClient.exe
PID 2468 wrote to memory of 2080	2468	Output.exe	XClient.exe
PID 2468 wrote to memory of 2080	2468	Output.exe	XClient.exe
PID 2468 wrote to memory of 2660	2468	Output.exe	NOTEPAD.EXE
PID 2468 wrote to memory of 2660	2468	Output.exe	NOTEPAD.EXE
PID 2468 wrote to memory of 2660	2468	Output.exe	NOTEPAD.EXE

C:\Users\Admin\AppData\Local\Temp\Output.exe
"C:\Users\Admin\AppData\Local\Temp\Output.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2468

C:\Users\Admin\AppData\Roaming\XClient.exe
"C:\Users\Admin\AppData\Roaming\XClient.exe"
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2080

C:\Windows\system32\NOTEPAD.EXE
"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\README.txt
2⤵
- Opens file in notepad (likely ransom note)
PID:2660

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\README.txt
Filesize
438B

MD5
659061a5689cae197b49f62be53bcf40

SHA1
6467f2252645e7ce87932aad37e24a6eed3fefeb

SHA256
0ca739b146beb166072cb199c8090f98140b88c5a7c251cf4ed730487507936c

SHA512
f5933100e6ce6a030cb7ee36213308cfa4b05859b903564c4d711e60433079dd8182922ea45f25ec8b8defca90c5aa56a94bce031e5aa0e35e11ae19fb858567

Download Submit
C:\Users\Admin\AppData\Roaming\XClient.exe
Filesize
80KB

MD5
cfeb71480542c9b6d6aec88f02e6d820

SHA1
4fcf90f5f8e16dcee2fa5ee1611394533f7ff740

SHA256
ebabe3ead25f28d4fe0a3ab1a592d7160065995da465ec549ebe8f27ba5eeee9

SHA512
e5d1a95fe948e295f0f7cc55f88464136e088b0c7f531a132eab76025885f2de93d101981fc3dedc4bd7ed271b58578bcab235fc9d2bedca6e209fb3f7d594bd

Download Submit
memory/2080-8-0x0000000000180000-0x000000000019A000-memory.dmp

Filesize
104KB

Download
memory/2080-9-0x000007FEF5890000-0x000007FEF627C000-memory.dmp

Filesize
9.9MB

Download
memory/2080-12-0x000000001B400000-0x000000001B480000-memory.dmp

Filesize
512KB

Download
memory/2468-0-0x0000000000B60000-0x0000000000B7E000-memory.dmp

Filesize
120KB

Download
memory/2468-1-0x000007FEF5890000-0x000007FEF627C000-memory.dmp

Filesize
9.9MB

Download
memory/2468-11-0x000007FEF5890000-0x000007FEF627C000-memory.dmp

Filesize
9.9MB

Download