xworm | 7cd9183c01c3c913ea5ea3f0a9cfb0f9594bfae61e6582204786bc4d406614aa

General

Target

ChromeUpdate.exe
Size

238KB
MD5

bac16142016d690c8769d21668736653
SHA1

4b7c1ca4e7b8739c739980c0b830010a87ceff13
SHA256

7cd9183c01c3c913ea5ea3f0a9cfb0f9594bfae61e6582204786bc4d406614aa
SHA512

50659e8e0e05180ad0acb27b46cfbe7ccdbce8ba97f240b3e6c7e1084e8afaa0624fd1eff82b830c3eb25db45596f6a437bd0cd9ef9d2a3f83fb80f4d015437f
SSDEEP

6144:mDp5I4So24RJMMC1RK4/mUGGR5nvn/4eHZZ+cvlFq9yu6x8vTeVYNLjoqQkeDR2r:mDp5I4So24RJM11RK4/mUGGR5nvn/4eQ

Score

10^/10

Malware Config

Signatures

Detect Xworm Payload 3 IoCs

resource	yara_rule
behavioral1/memory/2036-1-0x0000000000E60000-0x0000000000EA2000-memory.dmp	family_xworm
behavioral1/files/0x00080000000173fb-7.dat	family_xworm
behavioral1/memory/2860-9-0x0000000000FC0000-0x0000000001002000-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\ChromeUpdate.exe	ChromeUpdate.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ChromeUpdate.exe	ChromeUpdate.exe

Executes dropped EXE 3 IoCs

pid	Process
2860	ChromeUpdate.exe
2932	ChromeUpdate.exe
444	ChromeUpdate.exe

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-1-5-21-3290804112-2823094203-3137964600-1000\Software\Microsoft\Windows\CurrentVersion\Run\ChromeUpdate = "C:\\Users\\Admin\\AppData\\Roaming\\ChromeUpdate.exe"	ChromeUpdate.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
1312	schtasks.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	2036	ChromeUpdate.exe
Token: SeDebugPrivilege	2860	ChromeUpdate.exe
Token: SeDebugPrivilege	2932	ChromeUpdate.exe
Token: SeDebugPrivilege	444	ChromeUpdate.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2036 wrote to memory of 1312	2036	ChromeUpdate.exe	31
PID 2036 wrote to memory of 1312	2036	ChromeUpdate.exe	31
PID 2036 wrote to memory of 1312	2036	ChromeUpdate.exe	31
PID 2752 wrote to memory of 2860	2752	taskeng.exe	34
PID 2752 wrote to memory of 2860	2752	taskeng.exe	34
PID 2752 wrote to memory of 2860	2752	taskeng.exe	34
PID 2752 wrote to memory of 2932	2752	taskeng.exe	37
PID 2752 wrote to memory of 2932	2752	taskeng.exe	37
PID 2752 wrote to memory of 2932	2752	taskeng.exe	37
PID 2752 wrote to memory of 444	2752	taskeng.exe	38
PID 2752 wrote to memory of 444	2752	taskeng.exe	38
PID 2752 wrote to memory of 444	2752	taskeng.exe	38

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\ChromeUpdate.exe
"C:\Users\Admin\AppData\Local\Temp\ChromeUpdate.exe"
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2036
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /sc minute /mo 1 /tn "ChromeUpdate" /tr "C:\Users\Admin\AppData\Roaming\ChromeUpdate.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:1312

C:\Windows\system32\taskeng.exe
taskeng.exe {D7C5872E-44BA-41DB-93D8-1967E5D452AD} S-1-5-21-3290804112-2823094203-3137964600-1000:VORHPBAB\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2752
- C:\Users\Admin\AppData\Roaming\ChromeUpdate.exe
  C:\Users\Admin\AppData\Roaming\ChromeUpdate.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2860
- C:\Users\Admin\AppData\Roaming\ChromeUpdate.exe
  C:\Users\Admin\AppData\Roaming\ChromeUpdate.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2932
- C:\Users\Admin\AppData\Roaming\ChromeUpdate.exe
  C:\Users\Admin\AppData\Roaming\ChromeUpdate.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:444

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

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
238KB

MD5
bac16142016d690c8769d21668736653

SHA1
4b7c1ca4e7b8739c739980c0b830010a87ceff13

SHA256
7cd9183c01c3c913ea5ea3f0a9cfb0f9594bfae61e6582204786bc4d406614aa

SHA512
50659e8e0e05180ad0acb27b46cfbe7ccdbce8ba97f240b3e6c7e1084e8afaa0624fd1eff82b830c3eb25db45596f6a437bd0cd9ef9d2a3f83fb80f4d015437f

Download Submit
memory/2036-0-0x000007FEF5973000-0x000007FEF5974000-memory.dmp

Filesize
4KB

Download
memory/2036-1-0x0000000000E60000-0x0000000000EA2000-memory.dmp

Filesize
264KB

Download
memory/2036-2-0x000007FEF5970000-0x000007FEF635C000-memory.dmp

Filesize
9.9MB

Download
memory/2036-10-0x000007FEF5973000-0x000007FEF5974000-memory.dmp

Filesize
4KB

Download
memory/2036-11-0x000007FEF5970000-0x000007FEF635C000-memory.dmp

Filesize
9.9MB

Download
memory/2860-9-0x0000000000FC0000-0x0000000001002000-memory.dmp

Filesize
264KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads