xworm | 1eb0ce0f9552d19ba26fc379582149b662c5706afa3f2de64aafa29c65489dc1

General

Target

ZeroxStealerInstaller.exe
Size

2.9MB
MD5

9b1a7d9403b93f7a390d953c2785a9ed
SHA1

0246222a9290cd73bfda0e402722a82d04507a43
SHA256

97b156f53366d0aac2e46c97b8f7bb3efb1a541e0a923aed24c0f8e7d4c4ee25
SHA512

fdf61c48deee07db3563859a934fd9238c3ed33bd68b180fbf46d121b233359b69d3ec6c370f0ca17bbdb444ec8a784985d54a06704dfe1ea22701124b0fc4b0
SSDEEP

49152:qvo+8aGzQqDRtQH/vpxWIfKgVgVKkbmNoi7r+ogPpkZs/ohvc8q8IzIWvuA8KXAb:qh83dRtMvb/KgVLNNwRkVhBNIzWvKo

Score

10^/10

xworm rat trojan

Malware Config

Extracted

Family

xworm

C2

lijaligibidu-35558.portmap.host:35558

127.0.0.1:28019

chilhoek-28019.portmap.host:28019

Attributes

Install_directory
%AppData%
install_file
Windows Security.exe

Signatures

Detect Xworm Payload 4 IoCs

resource	yara_rule
behavioral1/files/0x000c00000001202c-5.dat	family_xworm
behavioral1/files/0x0008000000016c66-11.dat	family_xworm
behavioral1/memory/2040-10-0x0000000000DD0000-0x0000000000DE8000-memory.dmp	family_xworm
behavioral1/memory/1956-13-0x0000000000E70000-0x0000000000E8A000-memory.dmp	family_xworm

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

Executes dropped EXE 3 IoCs

pid	Process
2040	WindowsSecurity.exe
1956	XClient (2).exe
2288	ZeroxStealerInstaller.exe

Looks up external IP address via web service 2 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
5	ip-api.com
6	ip-api.com

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

System Information Discovery
T1082

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS	ZeroxStealerInstaller.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemManufacturer	ZeroxStealerInstaller.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemVersion	ZeroxStealerInstaller.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2040	WindowsSecurity.exe
Token: SeDebugPrivilege	1956	XClient (2).exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 108 wrote to memory of 2040	108	ZeroxStealerInstaller.exe	30
PID 108 wrote to memory of 2040	108	ZeroxStealerInstaller.exe	30
PID 108 wrote to memory of 2040	108	ZeroxStealerInstaller.exe	30
PID 108 wrote to memory of 1956	108	ZeroxStealerInstaller.exe	31
PID 108 wrote to memory of 1956	108	ZeroxStealerInstaller.exe	31
PID 108 wrote to memory of 1956	108	ZeroxStealerInstaller.exe	31
PID 108 wrote to memory of 2288	108	ZeroxStealerInstaller.exe	32
PID 108 wrote to memory of 2288	108	ZeroxStealerInstaller.exe	32
PID 108 wrote to memory of 2288	108	ZeroxStealerInstaller.exe	32

C:\Users\Admin\AppData\Local\Temp\ZeroxStealerInstaller.exe
"C:\Users\Admin\AppData\Local\Temp\ZeroxStealerInstaller.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:108
- C:\Users\Admin\AppData\Roaming\WindowsSecurity.exe
  "C:\Users\Admin\AppData\Roaming\WindowsSecurity.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2040
- C:\Users\Admin\AppData\Roaming\XClient (2).exe
  "C:\Users\Admin\AppData\Roaming\XClient (2).exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1956
- C:\Users\Admin\AppData\Roaming\ZeroxStealerInstaller.exe
  "C:\Users\Admin\AppData\Roaming\ZeroxStealerInstaller.exe"
  2⤵
  - Executes dropped EXE
  - Enumerates system info in registry
  PID:2288

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\WindowsSecurity.exe

Filesize
75KB

MD5
cf219a189dae4a022f26dd58cd5367e6

SHA1
76c2e7b756e894afc4e5fd7267fce398d58c518f

SHA256
725c0bcdb953e39e96a0192d2712b261541647259e494c583d19697a10d2ffbe

SHA512
21dc7cdd5ea07be708a5c696708207a1760851d2fbb608969254a8f3e806bbb87b6b27a4d5f4cecf1b5d90f6fc81759fd9f6222ddafdb955d41b0333ea085f1f

Download Submit
C:\Users\Admin\AppData\Roaming\XClient (2).exe

Filesize
81KB

MD5
c1b7e4e3a25be04cc93a44017bd58298

SHA1
b40e7d99a41bd49172cd23470ccb4387b3351942

SHA256
9f36f62ffb252f041490ccf9faf344e03a7987a566cc399f0be06e4e5e60fbcb

SHA512
4192250e78e0a3440e2b5d1b7782566a55d96fa8a68877ff8869f617ce3095374289c78ea3d200082fb91efb8fcbce8fea946fcfea08cef05265a2c3512f99cf

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

Filesize
2.7MB

MD5
e4468845f3b426403f3223a1b18cf858

SHA1
9cea44a892f83e660d56a69bc97af2c094b2f087

SHA256
7cebe983265c3a77b2a369b56edd521733e9103f1a42fd09dcaf5abf5dd547bd

SHA512
c4703c2f3f0bb92020b4d920d5ba2e6ba7e505ae736bc7b4d5289ed8b3faff3748061f731e6f6ecf0aa6d78eccbfa187175a07f54bd7e4b97345f8bc91080840

Download Submit
memory/108-1-0x00000000013A0000-0x0000000001690000-memory.dmp

Filesize
2.9MB

Download
memory/108-0-0x000007FEF54B3000-0x000007FEF54B4000-memory.dmp

Filesize
4KB

Download
memory/1956-13-0x0000000000E70000-0x0000000000E8A000-memory.dmp

Filesize
104KB

Download
memory/2040-10-0x0000000000DD0000-0x0000000000DE8000-memory.dmp

Filesize
96KB

Download
memory/2040-24-0x000007FEF54B0000-0x000007FEF5E9C000-memory.dmp

Filesize
9.9MB

Download
memory/2040-26-0x000007FEF54B0000-0x000007FEF5E9C000-memory.dmp

Filesize
9.9MB

Download
memory/2288-21-0x00000000011C0000-0x0000000001486000-memory.dmp

Filesize
2.8MB

Download
memory/2288-22-0x000000001B530000-0x000000001B67E000-memory.dmp

Filesize
1.3MB

Download
memory/2288-23-0x0000000000240000-0x0000000000254000-memory.dmp

Filesize
80KB

Download
memory/2288-25-0x000000001B780000-0x000000001B996000-memory.dmp

Filesize
2.1MB

Download

Analysis

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