xworm | 02f831b9005ec9d05ee53a84016aae91573bd25637929f944aadd8bae23e2bbc

General

Target

kdmapper.exe
Size

69KB
MD5

3a84ecb6d7aa88b870c5c03c278568cf
SHA1

7b5b6d52a716fb1b7185d906eecf39dcdf598b53
SHA256

02f831b9005ec9d05ee53a84016aae91573bd25637929f944aadd8bae23e2bbc
SHA512

bcf062a89bf7e5c881fc1c03efdc60d8948f11b470160aaa695bc2985e129f3b24123a61611b5af587d4f3319342a32323891389cac3e5a24ece6aa04877790c
SSDEEP

1536:7ZbYYNTBdvla2CHJ8bW07vzN9AJqt0sOOTs:ph1laHp8bW0LPWLsOOI

Score

10^/10

xworm rat trojan

Malware Config

Extracted

Family

xworm

C2

official-walks.gl.at.ply.gg:57776

Attributes

Install_directory
%AppData%
install_file
Winsxcrv645.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/1204-1-0x0000000000120000-0x0000000000138000-memory.dmp	family_xworm
behavioral2/files/0x000300000001e762-4.dat	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-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	kdmapper.exe

Executes dropped EXE 1 IoCs

pid	Process
536	Winsxcrv645.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
12	ip-api.com

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

System Information Discovery
T1082

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
3352	timeout.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
5008	schtasks.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1204	kdmapper.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1204	kdmapper.exe
Token: SeDebugPrivilege	1204	kdmapper.exe
Token: SeDebugPrivilege	536	Winsxcrv645.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1204	kdmapper.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1204 wrote to memory of 5008	1204	kdmapper.exe	88
PID 1204 wrote to memory of 5008	1204	kdmapper.exe	88
PID 1204 wrote to memory of 3684	1204	kdmapper.exe	105
PID 1204 wrote to memory of 3684	1204	kdmapper.exe	105
PID 1204 wrote to memory of 1036	1204	kdmapper.exe	107
PID 1204 wrote to memory of 1036	1204	kdmapper.exe	107
PID 1036 wrote to memory of 3352	1036	cmd.exe	109
PID 1036 wrote to memory of 3352	1036	cmd.exe	109

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\kdmapper.exe
"C:\Users\Admin\AppData\Local\Temp\kdmapper.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1204
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "Winsxcrv645" /tr "C:\Users\Admin\AppData\Roaming\Winsxcrv645.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:5008
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /delete /f /tn "Winsxcrv645"
  2⤵
  PID:3684
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp54C2.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1036
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:3352

C:\Users\Admin\AppData\Roaming\Winsxcrv645.exe
C:\Users\Admin\AppData\Roaming\Winsxcrv645.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:536

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp54C2.tmp.bat

Filesize
160B

MD5
c5f252a62a27ee194261a83aa633633e

SHA1
c1d9f278ec380ef9ed3d20b8c0e35887af82c618

SHA256
ef4e71f980bd24060f4dcd75430fd0fbe3ac7f5302f10c38e2c2381dd63a977e

SHA512
079c9b1e645db9c96667656a9cfb888df5657467b32ef87c708b75eedfaf9736859334755f989f5e6027ea0a0acafd7e66960bcf0d526fcdf30acd5bcdf5c19b

Download Submit
C:\Users\Admin\AppData\Roaming\Winsxcrv645.exe

Filesize
69KB

MD5
3a84ecb6d7aa88b870c5c03c278568cf

SHA1
7b5b6d52a716fb1b7185d906eecf39dcdf598b53

SHA256
02f831b9005ec9d05ee53a84016aae91573bd25637929f944aadd8bae23e2bbc

SHA512
bcf062a89bf7e5c881fc1c03efdc60d8948f11b470160aaa695bc2985e129f3b24123a61611b5af587d4f3319342a32323891389cac3e5a24ece6aa04877790c

Download Submit
memory/536-6-0x00007FF955030000-0x00007FF955AF1000-memory.dmp

Filesize
10.8MB

Download
memory/536-8-0x00007FF955030000-0x00007FF955AF1000-memory.dmp

Filesize
10.8MB

Download
memory/1204-0-0x00007FF955033000-0x00007FF955035000-memory.dmp

Filesize
8KB

Download
memory/1204-1-0x0000000000120000-0x0000000000138000-memory.dmp

Filesize
96KB

Download
memory/1204-2-0x00007FF955030000-0x00007FF955AF1000-memory.dmp

Filesize
10.8MB

Download
memory/1204-9-0x00007FF955030000-0x00007FF955AF1000-memory.dmp

Filesize
10.8MB

Download
memory/1204-10-0x0000000000900000-0x000000000090C000-memory.dmp

Filesize
48KB

Download
memory/1204-15-0x00007FF955030000-0x00007FF955AF1000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads