xworm | 7973fcb627c7c8558c7aaf62ec80f24e29a106d9ea7fe2e2fbcf71a5f1a19e43

General

Target

7973fcb627c7c8558c7aaf62ec80f24e29a106d9ea7fe2e2fbcf71a5f1a19e43N.exe
Size

271KB
MD5

776f1ab7d2bb8807a424d6947f299e30
SHA1

508297113c75884fdf374b8aa9eb74f92e5a0cbe
SHA256

7973fcb627c7c8558c7aaf62ec80f24e29a106d9ea7fe2e2fbcf71a5f1a19e43
SHA512

2237fdd9bf1644c9b684c26c3042e423de8bfcfe4b3c171b4a8e5cba35de5934393d60e33432f45aa1385e4050227a7ba4912c6e6e3151a0d8c9527495c44679
SSDEEP

6144:uutkz7bbo7e7i99999Yki76sNV6/68/27ySQPLL:OL4e7i99999Yki76skPLL

Score

10^/10

xworm persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

91.166.206.112:39575

Attributes

Install_directory
%AppData%
install_file
USB.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/3884-1-0x0000000000FD0000-0x0000000001018000-memory.dmp	family_xworm
behavioral2/files/0x000700000002346f-8.dat	family_xworm

Xworm
Xworm is a remote access trojan written in C#.
trojan rat 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-1-5-21-355097885-2402257403-2971294179-1000\Control Panel\International\Geo\Nation	7973fcb627c7c8558c7aaf62ec80f24e29a106d9ea7fe2e2fbcf71a5f1a19e43N.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Windows Security .lnk	7973fcb627c7c8558c7aaf62ec80f24e29a106d9ea7fe2e2fbcf71a5f1a19e43N.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Windows Security .lnk	7973fcb627c7c8558c7aaf62ec80f24e29a106d9ea7fe2e2fbcf71a5f1a19e43N.exe

Executes dropped EXE 2 IoCs

pid	Process
3212	Windows Security
2736	Windows Security

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows Security = "C:\\Users\\Admin\\AppData\\Roaming\\Windows Security "	7973fcb627c7c8558c7aaf62ec80f24e29a106d9ea7fe2e2fbcf71a5f1a19e43N.exe

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

System Information Discovery
T1082

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
1524	schtasks.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
3884	7973fcb627c7c8558c7aaf62ec80f24e29a106d9ea7fe2e2fbcf71a5f1a19e43N.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	3884	7973fcb627c7c8558c7aaf62ec80f24e29a106d9ea7fe2e2fbcf71a5f1a19e43N.exe
Token: SeDebugPrivilege	3212	Windows Security
Token: SeDebugPrivilege	2736	Windows Security

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3884	7973fcb627c7c8558c7aaf62ec80f24e29a106d9ea7fe2e2fbcf71a5f1a19e43N.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 3884 wrote to memory of 1524	3884	7973fcb627c7c8558c7aaf62ec80f24e29a106d9ea7fe2e2fbcf71a5f1a19e43N.exe	86
PID 3884 wrote to memory of 1524	3884	7973fcb627c7c8558c7aaf62ec80f24e29a106d9ea7fe2e2fbcf71a5f1a19e43N.exe	86

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\7973fcb627c7c8558c7aaf62ec80f24e29a106d9ea7fe2e2fbcf71a5f1a19e43N.exe
"C:\Users\Admin\AppData\Local\Temp\7973fcb627c7c8558c7aaf62ec80f24e29a106d9ea7fe2e2fbcf71a5f1a19e43N.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3884
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "Windows Security " /tr "C:\Users\Admin\AppData\Roaming\Windows Security "
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:1524

C:\Users\Admin\AppData\Roaming\Windows Security
"C:\Users\Admin\AppData\Roaming\Windows Security"
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3212

C:\Users\Admin\AppData\Roaming\Windows Security
"C:\Users\Admin\AppData\Roaming\Windows Security"
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2736

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Modify Registry

1

T1112

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\Microsoft\CLR_v4.0\UsageLogs\Windows Security.log

Filesize
654B

MD5
2ff39f6c7249774be85fd60a8f9a245e

SHA1
684ff36b31aedc1e587c8496c02722c6698c1c4e

SHA256
e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

SHA512
1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

Download Submit
C:\Users\Admin\AppData\Roaming\Windows Security

Filesize
271KB

MD5
776f1ab7d2bb8807a424d6947f299e30

SHA1
508297113c75884fdf374b8aa9eb74f92e5a0cbe

SHA256
7973fcb627c7c8558c7aaf62ec80f24e29a106d9ea7fe2e2fbcf71a5f1a19e43

SHA512
2237fdd9bf1644c9b684c26c3042e423de8bfcfe4b3c171b4a8e5cba35de5934393d60e33432f45aa1385e4050227a7ba4912c6e6e3151a0d8c9527495c44679

Download Submit
memory/3212-10-0x00007FFBC2B90000-0x00007FFBC3651000-memory.dmp

Filesize
10.8MB

Download
memory/3212-12-0x00007FFBC2B90000-0x00007FFBC3651000-memory.dmp

Filesize
10.8MB

Download
memory/3884-0-0x00007FFBC2B93000-0x00007FFBC2B95000-memory.dmp

Filesize
8KB

Download
memory/3884-1-0x0000000000FD0000-0x0000000001018000-memory.dmp

Filesize
288KB

Download
memory/3884-5-0x00007FFBC2B90000-0x00007FFBC3651000-memory.dmp

Filesize
10.8MB

Download
memory/3884-6-0x00007FFBC2B93000-0x00007FFBC2B95000-memory.dmp

Filesize
8KB

Download
memory/3884-7-0x00007FFBC2B90000-0x00007FFBC3651000-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