xworm | a7b10c83d7f95867ba50ec6c6cace3347a8ac906c6a5fd0d5379fe54aa640b58

Analysis

max time kernel
120s
max time network
124s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
06/11/2024, 22:16

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General

Target

a7b10c83d7f95867ba50ec6c6cace3347a8ac906c6a5fd0d5379fe54aa640b58N.exe
Size

600KB
MD5

0af109949c3f505614433bb241532ad0
SHA1

dba62ebfad2af8c4d7015daebe949fc23d648a43
SHA256

a7b10c83d7f95867ba50ec6c6cace3347a8ac906c6a5fd0d5379fe54aa640b58
SHA512

846383a34fbc014eb2d4f5de368ef50b954439b90db9196b2d9b4f8b53da793350496e40b8e5231e6c831ffa52d9d6e9442f843cdb19f150d5a4f63a1bed8163
SSDEEP

12288:6G4QbzjsO64b7cvsETjor20vipRugJQqPZnv2SGUbeAKYeGTYzwYzdqmxyKNnNqm:d4QbzgO64b7cvnDsgUdy2N

Score

10^/10

xworm discovery execution rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

Mutex

hTiTQSR18tmk2nlC

Attributes

install_file
wintousb.exe

aes.plain

Signatures

Detect Xworm Payload 3 IoCs

resource	yara_rule
behavioral2/memory/2832-8-0x0000000000400000-0x0000000000410000-memory.dmp	family_xworm
behavioral2/memory/2832-7-0x0000000000400000-0x0000000000410000-memory.dmp	family_xworm
behavioral2/memory/2832-6-0x0000000000400000-0x0000000000410000-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
4492	powershell.exe
1012	powershell.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	RegAsm.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
16	raw.githubusercontent.com
17	raw.githubusercontent.com

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 836 set thread context of 2832	836	a7b10c83d7f95867ba50ec6c6cace3347a8ac906c6a5fd0d5379fe54aa640b58N.exe	86

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a7b10c83d7f95867ba50ec6c6cace3347a8ac906c6a5fd0d5379fe54aa640b58N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
836	a7b10c83d7f95867ba50ec6c6cace3347a8ac906c6a5fd0d5379fe54aa640b58N.exe
836	a7b10c83d7f95867ba50ec6c6cace3347a8ac906c6a5fd0d5379fe54aa640b58N.exe
4492	powershell.exe
4492	powershell.exe
1012	powershell.exe
1012	powershell.exe
2832	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	836	a7b10c83d7f95867ba50ec6c6cace3347a8ac906c6a5fd0d5379fe54aa640b58N.exe
Token: SeDebugPrivilege	2832	RegAsm.exe
Token: SeDebugPrivilege	4492	powershell.exe
Token: SeDebugPrivilege	1012	powershell.exe
Token: SeDebugPrivilege	2832	RegAsm.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2832	RegAsm.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 836 wrote to memory of 2800	836	a7b10c83d7f95867ba50ec6c6cace3347a8ac906c6a5fd0d5379fe54aa640b58N.exe	85
PID 836 wrote to memory of 2800	836	a7b10c83d7f95867ba50ec6c6cace3347a8ac906c6a5fd0d5379fe54aa640b58N.exe	85
PID 836 wrote to memory of 2800	836	a7b10c83d7f95867ba50ec6c6cace3347a8ac906c6a5fd0d5379fe54aa640b58N.exe	85
PID 836 wrote to memory of 2832	836	a7b10c83d7f95867ba50ec6c6cace3347a8ac906c6a5fd0d5379fe54aa640b58N.exe	86
PID 836 wrote to memory of 2832	836	a7b10c83d7f95867ba50ec6c6cace3347a8ac906c6a5fd0d5379fe54aa640b58N.exe	86
PID 836 wrote to memory of 2832	836	a7b10c83d7f95867ba50ec6c6cace3347a8ac906c6a5fd0d5379fe54aa640b58N.exe	86
PID 836 wrote to memory of 2832	836	a7b10c83d7f95867ba50ec6c6cace3347a8ac906c6a5fd0d5379fe54aa640b58N.exe	86
PID 836 wrote to memory of 2832	836	a7b10c83d7f95867ba50ec6c6cace3347a8ac906c6a5fd0d5379fe54aa640b58N.exe	86
PID 836 wrote to memory of 2832	836	a7b10c83d7f95867ba50ec6c6cace3347a8ac906c6a5fd0d5379fe54aa640b58N.exe	86
PID 836 wrote to memory of 2832	836	a7b10c83d7f95867ba50ec6c6cace3347a8ac906c6a5fd0d5379fe54aa640b58N.exe	86
PID 836 wrote to memory of 2832	836	a7b10c83d7f95867ba50ec6c6cace3347a8ac906c6a5fd0d5379fe54aa640b58N.exe	86
PID 2832 wrote to memory of 4492	2832	RegAsm.exe	94
PID 2832 wrote to memory of 4492	2832	RegAsm.exe	94
PID 2832 wrote to memory of 4492	2832	RegAsm.exe	94
PID 2832 wrote to memory of 1012	2832	RegAsm.exe	98
PID 2832 wrote to memory of 1012	2832	RegAsm.exe	98
PID 2832 wrote to memory of 1012	2832	RegAsm.exe	98

C:\Users\Admin\AppData\Local\Temp\a7b10c83d7f95867ba50ec6c6cace3347a8ac906c6a5fd0d5379fe54aa640b58N.exe
"C:\Users\Admin\AppData\Local\Temp\a7b10c83d7f95867ba50ec6c6cace3347a8ac906c6a5fd0d5379fe54aa640b58N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:836
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  PID:2800
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2832
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4492
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'RegAsm.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1012

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
968cb9309758126772781b83adb8a28f

SHA1
8da30e71accf186b2ba11da1797cf67f8f78b47c

SHA256
92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a

SHA512
4bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
18KB

MD5
f1ebb7b24e3ee2c69a6057720c540a2d

SHA1
730dae290807e16df672bb31b901ec6659ba15ca

SHA256
eba0b936fe8789e416d66794925e286c1ede80807b8e86cdd267d6c21679332b

SHA512
de50e52ec1759106f8d7b053a763881056428e1269510f1a3a874caebe96dcfd5ebc442f82b28f74b4b82b1890d58d4ce67f73497efb6995b8a64bf70cf61bca

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_zkbxfsct.jis.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/836-0-0x000000007483E000-0x000000007483F000-memory.dmp

Filesize
4KB

Download
memory/836-1-0x0000000000E00000-0x0000000000E9C000-memory.dmp

Filesize
624KB

Download
memory/836-2-0x00000000032E0000-0x00000000032EE000-memory.dmp

Filesize
56KB

Download
memory/836-4-0x00000000057E0000-0x00000000057E8000-memory.dmp

Filesize
32KB

Download
memory/836-3-0x0000000074830000-0x0000000074FE0000-memory.dmp

Filesize
7.7MB

Download
memory/836-11-0x0000000074830000-0x0000000074FE0000-memory.dmp

Filesize
7.7MB

Download
memory/1012-75-0x000000006FAA0000-0x000000006FAEC000-memory.dmp

Filesize
304KB

Download
memory/1012-73-0x00000000061E0000-0x0000000006534000-memory.dmp

Filesize
3.3MB

Download
memory/2832-7-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2832-5-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2832-12-0x0000000074830000-0x0000000074FE0000-memory.dmp

Filesize
7.7MB

Download
memory/2832-13-0x0000000005500000-0x000000000559C000-memory.dmp

Filesize
624KB

Download
memory/2832-53-0x0000000074830000-0x0000000074FE0000-memory.dmp

Filesize
7.7MB

Download
memory/2832-90-0x0000000074830000-0x0000000074FE0000-memory.dmp

Filesize
7.7MB

Download
memory/2832-89-0x0000000006A20000-0x0000000006A2A000-memory.dmp

Filesize
40KB

Download
memory/2832-88-0x0000000007020000-0x00000000070B2000-memory.dmp

Filesize
584KB

Download
memory/2832-87-0x0000000006A70000-0x0000000007014000-memory.dmp

Filesize
5.6MB

Download
memory/2832-86-0x0000000074830000-0x0000000074FE0000-memory.dmp

Filesize
7.7MB

Download
memory/2832-6-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2832-8-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/4492-31-0x00000000058D0000-0x0000000005C24000-memory.dmp

Filesize
3.3MB

Download
memory/4492-52-0x0000000007250000-0x000000000725A000-memory.dmp

Filesize
40KB

Download
memory/4492-32-0x0000000005EB0000-0x0000000005ECE000-memory.dmp

Filesize
120KB

Download
memory/4492-33-0x00000000062D0000-0x000000000631C000-memory.dmp

Filesize
304KB

Download
memory/4492-35-0x000000006FAA0000-0x000000006FAEC000-memory.dmp

Filesize
304KB

Download
memory/4492-34-0x0000000007070000-0x00000000070A2000-memory.dmp

Filesize
200KB

Download
memory/4492-45-0x0000000006490000-0x00000000064AE000-memory.dmp

Filesize
120KB

Download
memory/4492-47-0x0000000074830000-0x0000000074FE0000-memory.dmp

Filesize
7.7MB

Download
memory/4492-46-0x00000000070B0000-0x0000000007153000-memory.dmp

Filesize
652KB

Download
memory/4492-48-0x0000000074830000-0x0000000074FE0000-memory.dmp

Filesize
7.7MB

Download
memory/4492-49-0x0000000074830000-0x0000000074FE0000-memory.dmp

Filesize
7.7MB

Download
memory/4492-50-0x0000000007820000-0x0000000007E9A000-memory.dmp

Filesize
6.5MB

Download
memory/4492-51-0x00000000071E0000-0x00000000071FA000-memory.dmp

Filesize
104KB

Download
memory/4492-21-0x0000000005860000-0x00000000058C6000-memory.dmp

Filesize
408KB

Download
memory/4492-54-0x0000000007460000-0x00000000074F6000-memory.dmp

Filesize
600KB

Download
memory/4492-55-0x00000000073E0000-0x00000000073F1000-memory.dmp

Filesize
68KB

Download
memory/4492-56-0x0000000007410000-0x000000000741E000-memory.dmp

Filesize
56KB

Download
memory/4492-57-0x0000000007420000-0x0000000007434000-memory.dmp

Filesize
80KB

Download
memory/4492-58-0x0000000007520000-0x000000000753A000-memory.dmp

Filesize
104KB

Download
memory/4492-20-0x00000000057F0000-0x0000000005856000-memory.dmp

Filesize
408KB

Download
memory/4492-19-0x0000000004EF0000-0x0000000004F12000-memory.dmp

Filesize
136KB

Download
memory/4492-18-0x0000000074830000-0x0000000074FE0000-memory.dmp

Filesize
7.7MB

Download
memory/4492-16-0x00000000050D0000-0x00000000056F8000-memory.dmp

Filesize
6.2MB

Download
memory/4492-17-0x0000000074830000-0x0000000074FE0000-memory.dmp

Filesize
7.7MB

Download
memory/4492-15-0x0000000074830000-0x0000000074FE0000-memory.dmp

Filesize
7.7MB

Download
memory/4492-14-0x0000000002590000-0x00000000025C6000-memory.dmp

Filesize
216KB

Download
memory/4492-59-0x0000000007500000-0x0000000007508000-memory.dmp

Filesize
32KB

Download
memory/4492-62-0x0000000074830000-0x0000000074FE0000-memory.dmp

Filesize
7.7MB

Download