xworm | 495c535f89ad9319b97b59b52eb5d690315c202f9add743061dc53b4b583b610

Analysis

max time kernel
38s
max time network
38s
platform
windows10-2004_x64
resource
win10v2004-20250217-en
resource tags

arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system
submitted
06/03/2025, 10:19

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General

Target

build.exe
Size

51KB
MD5

79cd45fb4ce03b7262bfca18f71f76df
SHA1

1cb7866b67768b8f15415cd33a4cbc1d284cb77e
SHA256

495c535f89ad9319b97b59b52eb5d690315c202f9add743061dc53b4b583b610
SHA512

370ff53c5f3648667c761c9d60f4f3ace99e2745b0253780c8dd0d87bca3c03e65c60f756bf8ea17a2f0790dbefa6ede6c0bcb7014f921cd51c945d53e4c8950
SSDEEP

1536:fwFIJ7n5Yptm6YCLgJwu4NFD0T5YKAYjZHgbyJ:pJ9Yptm6YCLgau4NGTJAYjZHWg

Score

10^/10

xworm rat trojan

Malware Config

Extracted

Family

xworm

links-recovered.at.ply.gg:32508

Mutex

XSLvYVsJZs3bsiZr

Attributes

install_file
USB.exe

aes.plain

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral1/files/0x000d000000023c07-6.dat	family_xworm
behavioral1/memory/1828-15-0x00000000009E0000-0x00000000009F0000-memory.dmp	family_xworm

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

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-1-5-21-1161330783-2912525651-1278508834-1000\Control Panel\International\Geo\Nation	build.exe

Executes dropped EXE 1 IoCs

pid	Process
1828	build.exe

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
21	ip-api.com

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1828	build.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 5048 wrote to memory of 1828	5048	build.exe	86
PID 5048 wrote to memory of 1828	5048	build.exe	86

C:\Users\Admin\AppData\Local\Temp\build.exe
"C:\Users\Admin\AppData\Local\Temp\build.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5048
- C:\Users\Admin\AppData\Roaming\build.exe
  "C:\Users\Admin\AppData\Roaming\build.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1828

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:2580

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
654B

MD5
2ff39f6c7249774be85fd60a8f9a245e

SHA1
684ff36b31aedc1e587c8496c02722c6698c1c4e

SHA256
e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

SHA512
1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

Download Submit
C:\Users\Admin\AppData\Roaming\build.exe

Filesize
42KB

MD5
522dcda6332f8fccbf277125a6b42b4a

SHA1
de959fb7d34ec6c3849c330f41dd1a4bc593ce2b

SHA256
de0330f6d59aa4d90c77af385145e5566c2d6dfec6e66a86d0c1d1f68e415d9d

SHA512
c3d02dfd6d1ec759b989b2f0e96b79c263bbf97264378b8da4103b3166490cdf23969729060bda23a7f41b9e43a758f56435416dbd396ec7c2f579bd285d537c

Download Submit
memory/1828-15-0x00000000009E0000-0x00000000009F0000-memory.dmp

Filesize
64KB

Download
memory/1828-16-0x00007FF84CCE0000-0x00007FF84D7A1000-memory.dmp

Filesize
10.8MB

Download
memory/1828-17-0x00007FF84CCE0000-0x00007FF84D7A1000-memory.dmp

Filesize
10.8MB

Download
memory/1828-18-0x00007FF84CCE0000-0x00007FF84D7A1000-memory.dmp

Filesize
10.8MB

Download
memory/5048-0-0x00007FF84CCE3000-0x00007FF84CCE5000-memory.dmp

Filesize
8KB

Download
memory/5048-1-0x00000000004C0000-0x00000000004D4000-memory.dmp

Filesize
80KB

Download