xworm | 91e36194bc1caf8580ad6f4c697f4086b7bc49ded8b05b8d379997c465d2ba83

General

Target

91e36194bc1caf8580ad6f4c697f4086b7bc49ded8b05b8d379997c465d2ba83.exe
Size

253KB
MD5

fd2201497c2a985bc0f86a069d534fb3
SHA1

4e2f1ac07162e37beb62ae297bcb579f0ef91020
SHA256

91e36194bc1caf8580ad6f4c697f4086b7bc49ded8b05b8d379997c465d2ba83
SHA512

d3c66780b55b42437ae6ffdc6a9a5d654534db0a026aad2b8d6d0ca85d7ce9a92c507e8e5e5b11e5de6fe7243abf8ff0d59483397d80f50492f7ae402f4c632a
SSDEEP

6144:QfXT5QBy680QyttI+5v1BNWP9dQPmZMYuFZmGS2:Jd8CttXUQPmiYuHX

Score

10^/10

xworm discovery rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

C2

178.215.224.96:7886

Mutex

eI2rMhB46IPDjynT

Attributes

install_file
USB.exe

aes.plain

Signatures

Detect Xworm Payload 5 IoCs

resource	yara_rule
behavioral1/memory/2056-3-0x0000000000400000-0x0000000000410000-memory.dmp	family_xworm
behavioral1/memory/2056-8-0x0000000000400000-0x0000000000410000-memory.dmp	family_xworm
behavioral1/memory/2056-10-0x0000000000400000-0x0000000000410000-memory.dmp	family_xworm
behavioral1/memory/2056-6-0x0000000000400000-0x0000000000410000-memory.dmp	family_xworm
behavioral1/memory/2056-4-0x0000000000400000-0x0000000000410000-memory.dmp	family_xworm

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

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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2148 set thread context of 2056	2148	91e36194bc1caf8580ad6f4c697f4086b7bc49ded8b05b8d379997c465d2ba83.exe	31

System Location Discovery: System Language Discovery 1 TTPs 2 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	MSBuild.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	91e36194bc1caf8580ad6f4c697f4086b7bc49ded8b05b8d379997c465d2ba83.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2056	MSBuild.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2056	MSBuild.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2056	MSBuild.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2148 wrote to memory of 2056	2148	91e36194bc1caf8580ad6f4c697f4086b7bc49ded8b05b8d379997c465d2ba83.exe	31
PID 2148 wrote to memory of 2056	2148	91e36194bc1caf8580ad6f4c697f4086b7bc49ded8b05b8d379997c465d2ba83.exe	31
PID 2148 wrote to memory of 2056	2148	91e36194bc1caf8580ad6f4c697f4086b7bc49ded8b05b8d379997c465d2ba83.exe	31
PID 2148 wrote to memory of 2056	2148	91e36194bc1caf8580ad6f4c697f4086b7bc49ded8b05b8d379997c465d2ba83.exe	31
PID 2148 wrote to memory of 2056	2148	91e36194bc1caf8580ad6f4c697f4086b7bc49ded8b05b8d379997c465d2ba83.exe	31
PID 2148 wrote to memory of 2056	2148	91e36194bc1caf8580ad6f4c697f4086b7bc49ded8b05b8d379997c465d2ba83.exe	31
PID 2148 wrote to memory of 2056	2148	91e36194bc1caf8580ad6f4c697f4086b7bc49ded8b05b8d379997c465d2ba83.exe	31
PID 2148 wrote to memory of 2056	2148	91e36194bc1caf8580ad6f4c697f4086b7bc49ded8b05b8d379997c465d2ba83.exe	31
PID 2148 wrote to memory of 2056	2148	91e36194bc1caf8580ad6f4c697f4086b7bc49ded8b05b8d379997c465d2ba83.exe	31

C:\Users\Admin\AppData\Local\Temp\91e36194bc1caf8580ad6f4c697f4086b7bc49ded8b05b8d379997c465d2ba83.exe
"C:\Users\Admin\AppData\Local\Temp\91e36194bc1caf8580ad6f4c697f4086b7bc49ded8b05b8d379997c465d2ba83.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2148
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:2056

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2056-6-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2056-3-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2056-2-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2056-1-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2056-8-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2056-10-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2056-5-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/2056-4-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2056-11-0x0000000074C9E000-0x0000000074C9F000-memory.dmp

Filesize
4KB

Download
memory/2056-12-0x0000000074C90000-0x000000007537E000-memory.dmp

Filesize
6.9MB

Download
memory/2056-13-0x0000000074C9E000-0x0000000074C9F000-memory.dmp

Filesize
4KB

Download
memory/2056-14-0x0000000074C90000-0x000000007537E000-memory.dmp

Filesize
6.9MB

Download
memory/2148-0-0x000000000033C000-0x000000000033D000-memory.dmp

Filesize
4KB

Download

Analysis

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