xworm | 8bcb1766e1f236382b36fab2fc6a8ee385275c0acbf3067471cd9b35703f2875

General

Target

8bcb1766e1f236382b36fab2fc6a8ee385275c0acbf3067471cd9b35703f2875.exe
Size

620KB
MD5

ce504e263e64e997c9dfb2b4953d6ed9
SHA1

acd670aab3e783c87b1ab7781068f44b5379d83a
SHA256

8bcb1766e1f236382b36fab2fc6a8ee385275c0acbf3067471cd9b35703f2875
SHA512

fa990cd9f3e787f78ffce86cc54442750824ca7e7b0195d925809be8563db85bd692b71321f4ecd7c835e4e2f3fc77ac7d6669384a334f1029caf85f7904c18a
SSDEEP

12288:A+1AIO8DfvjXUL90+FuS7X8pVejWT1On8yEyhLreTAEBFvkR:A+1DfvjXABr7X0sjWxOn8yKTAEBFq

Score

10^/10

xworm discovery rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

C2

45.200.148.105:2011

Mutex

d6r4OvNbMuDCNrHk

Attributes

Install_directory
%AppData%
install_file
Win32.exe

aes.plain

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral2/memory/1688-11-0x0000000000400000-0x0000000000410000-memory.dmp	family_xworm

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

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Win32.lnk	8bcb1766e1f236382b36fab2fc6a8ee385275c0acbf3067471cd9b35703f2875.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Win32.lnk	8bcb1766e1f236382b36fab2fc6a8ee385275c0acbf3067471cd9b35703f2875.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2924 set thread context of 1688	2924	8bcb1766e1f236382b36fab2fc6a8ee385275c0acbf3067471cd9b35703f2875.exe	96

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 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	8bcb1766e1f236382b36fab2fc6a8ee385275c0acbf3067471cd9b35703f2875.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8bcb1766e1f236382b36fab2fc6a8ee385275c0acbf3067471cd9b35703f2875.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2924	8bcb1766e1f236382b36fab2fc6a8ee385275c0acbf3067471cd9b35703f2875.exe
2924	8bcb1766e1f236382b36fab2fc6a8ee385275c0acbf3067471cd9b35703f2875.exe
1688	8bcb1766e1f236382b36fab2fc6a8ee385275c0acbf3067471cd9b35703f2875.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2924	8bcb1766e1f236382b36fab2fc6a8ee385275c0acbf3067471cd9b35703f2875.exe
Token: SeDebugPrivilege	1688	8bcb1766e1f236382b36fab2fc6a8ee385275c0acbf3067471cd9b35703f2875.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1688	8bcb1766e1f236382b36fab2fc6a8ee385275c0acbf3067471cd9b35703f2875.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2924 wrote to memory of 1688	2924	8bcb1766e1f236382b36fab2fc6a8ee385275c0acbf3067471cd9b35703f2875.exe	96
PID 2924 wrote to memory of 1688	2924	8bcb1766e1f236382b36fab2fc6a8ee385275c0acbf3067471cd9b35703f2875.exe	96
PID 2924 wrote to memory of 1688	2924	8bcb1766e1f236382b36fab2fc6a8ee385275c0acbf3067471cd9b35703f2875.exe	96
PID 2924 wrote to memory of 1688	2924	8bcb1766e1f236382b36fab2fc6a8ee385275c0acbf3067471cd9b35703f2875.exe	96
PID 2924 wrote to memory of 1688	2924	8bcb1766e1f236382b36fab2fc6a8ee385275c0acbf3067471cd9b35703f2875.exe	96
PID 2924 wrote to memory of 1688	2924	8bcb1766e1f236382b36fab2fc6a8ee385275c0acbf3067471cd9b35703f2875.exe	96
PID 2924 wrote to memory of 1688	2924	8bcb1766e1f236382b36fab2fc6a8ee385275c0acbf3067471cd9b35703f2875.exe	96
PID 2924 wrote to memory of 1688	2924	8bcb1766e1f236382b36fab2fc6a8ee385275c0acbf3067471cd9b35703f2875.exe	96

C:\Users\Admin\AppData\Local\Temp\8bcb1766e1f236382b36fab2fc6a8ee385275c0acbf3067471cd9b35703f2875.exe
"C:\Users\Admin\AppData\Local\Temp\8bcb1766e1f236382b36fab2fc6a8ee385275c0acbf3067471cd9b35703f2875.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2924
- C:\Users\Admin\AppData\Local\Temp\8bcb1766e1f236382b36fab2fc6a8ee385275c0acbf3067471cd9b35703f2875.exe
  "C:\Users\Admin\AppData\Local\Temp\8bcb1766e1f236382b36fab2fc6a8ee385275c0acbf3067471cd9b35703f2875.exe"
  2⤵
  - Drops startup file
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:1688

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

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

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\8bcb1766e1f236382b36fab2fc6a8ee385275c0acbf3067471cd9b35703f2875.exe.log

Filesize
1KB

MD5
400f1cc1a0a0ce1cdabda365ab3368ce

SHA1
1ecf683f14271d84f3b6063493dce00ff5f42075

SHA256
c8fa64f4b69df13ed6408fd4a204f318a36c2f38c85d4a4d42adfc9173f73765

SHA512
14c8cfd58d097e5e89c8cabe1e665173f1ccf604a9ef70cdcb84116e265f90819c19c891be408e0ad7e29086a5c2ea2883b7a7d1184878dbbac63e2cabcd1c45

Download Submit
memory/1688-11-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/1688-23-0x0000000074500000-0x0000000074CB0000-memory.dmp

Filesize
7.7MB

Download
memory/1688-22-0x0000000006460000-0x00000000064C6000-memory.dmp

Filesize
408KB

Download
memory/1688-21-0x0000000074500000-0x0000000074CB0000-memory.dmp

Filesize
7.7MB

Download
memory/1688-20-0x0000000074500000-0x0000000074CB0000-memory.dmp

Filesize
7.7MB

Download
memory/1688-14-0x0000000074500000-0x0000000074CB0000-memory.dmp

Filesize
7.7MB

Download
memory/2924-4-0x0000000074500000-0x0000000074CB0000-memory.dmp

Filesize
7.7MB

Download
memory/2924-8-0x000000007450E000-0x000000007450F000-memory.dmp

Filesize
4KB

Download
memory/2924-9-0x0000000074500000-0x0000000074CB0000-memory.dmp

Filesize
7.7MB

Download
memory/2924-10-0x0000000000EC0000-0x0000000000F14000-memory.dmp

Filesize
336KB

Download
memory/2924-7-0x0000000005290000-0x00000000052B6000-memory.dmp

Filesize
152KB

Download
memory/2924-6-0x00000000051B0000-0x000000000524C000-memory.dmp

Filesize
624KB

Download
memory/2924-5-0x0000000004F00000-0x0000000004F0A000-memory.dmp

Filesize
40KB

Download
memory/2924-15-0x0000000074500000-0x0000000074CB0000-memory.dmp

Filesize
7.7MB

Download
memory/2924-0-0x000000007450E000-0x000000007450F000-memory.dmp

Filesize
4KB

Download
memory/2924-3-0x0000000004F20000-0x0000000004FB2000-memory.dmp

Filesize
584KB

Download
memory/2924-2-0x00000000053F0000-0x0000000005994000-memory.dmp

Filesize
5.6MB

Download
memory/2924-1-0x0000000000470000-0x000000000050E000-memory.dmp

Filesize
632KB

Download

Analysis

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