xworm | dc535675df47e762a771611cbd06f1ccb2b1962ccbfca914a3448fef9ffa9d78

General

Target

dc535675df47e762a771611cbd06f1ccb2b1962ccbfca914a3448fef9ffa9d78.exe
Size

86KB
MD5

de16a00b42e978595cbd917d10ceb984
SHA1

fccc091d3ab6b4c26449e3a4ad0bc5eda73b6a7c
SHA256

dc535675df47e762a771611cbd06f1ccb2b1962ccbfca914a3448fef9ffa9d78
SHA512

aea3e18957bb3edbcf6a08fc43ed0e7792cfcd5a3c1a4b8a017b92e0467129a3879d3282ef73b505e49440fb34f294fc7c50712f6c8bd11b55d710004fed3122
SSDEEP

1536:EW8TIhv1Cz1WeVB/afL8IT+DQX9Ea+bnJEsmTtjD0H6JVapKVX5OwoKxA35:ER0Z1VhLTFr+bn2z1D0OVacJOXKK

Score

10^/10

xworm execution rat trojan

Malware Config

Extracted

Family

xworm

C2

80.133.88.87:8848

Attributes

Install_directory
%AppData%
install_file
BrowserUpdater.exe
telegram
https://api.telegram.org/bot7409084272:AAGfvawizs5psSM16en9CLFzI0ZQnCNB3SA

Signatures

Detect Xworm Payload 3 IoCs

resource	yara_rule
behavioral1/memory/2692-1-0x0000000000F30000-0x0000000000F4C000-memory.dmp	family_xworm
behavioral1/files/0x000a0000000120cd-32.dat	family_xworm
behavioral1/memory/2952-34-0x0000000001160000-0x000000000117C000-memory.dmp	family_xworm

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

Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
2820	powershell.exe
2912	powershell.exe
2624	powershell.exe
1048	powershell.exe

Executes dropped EXE 2 IoCs

pid	Process
2952	BrowserUpdater.exe
1700	BrowserUpdater.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
2900	schtasks.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2820	powershell.exe
2912	powershell.exe
2624	powershell.exe
1048	powershell.exe
2692	dc535675df47e762a771611cbd06f1ccb2b1962ccbfca914a3448fef9ffa9d78.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	2692	dc535675df47e762a771611cbd06f1ccb2b1962ccbfca914a3448fef9ffa9d78.exe
Token: SeDebugPrivilege	2820	powershell.exe
Token: SeDebugPrivilege	2912	powershell.exe
Token: SeDebugPrivilege	2624	powershell.exe
Token: SeDebugPrivilege	1048	powershell.exe
Token: SeDebugPrivilege	2692	dc535675df47e762a771611cbd06f1ccb2b1962ccbfca914a3448fef9ffa9d78.exe
Token: SeDebugPrivilege	2952	BrowserUpdater.exe
Token: SeDebugPrivilege	1700	BrowserUpdater.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2692	dc535675df47e762a771611cbd06f1ccb2b1962ccbfca914a3448fef9ffa9d78.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2692 wrote to memory of 2820	2692	dc535675df47e762a771611cbd06f1ccb2b1962ccbfca914a3448fef9ffa9d78.exe	30
PID 2692 wrote to memory of 2820	2692	dc535675df47e762a771611cbd06f1ccb2b1962ccbfca914a3448fef9ffa9d78.exe	30
PID 2692 wrote to memory of 2820	2692	dc535675df47e762a771611cbd06f1ccb2b1962ccbfca914a3448fef9ffa9d78.exe	30
PID 2692 wrote to memory of 2912	2692	dc535675df47e762a771611cbd06f1ccb2b1962ccbfca914a3448fef9ffa9d78.exe	32
PID 2692 wrote to memory of 2912	2692	dc535675df47e762a771611cbd06f1ccb2b1962ccbfca914a3448fef9ffa9d78.exe	32
PID 2692 wrote to memory of 2912	2692	dc535675df47e762a771611cbd06f1ccb2b1962ccbfca914a3448fef9ffa9d78.exe	32
PID 2692 wrote to memory of 2624	2692	dc535675df47e762a771611cbd06f1ccb2b1962ccbfca914a3448fef9ffa9d78.exe	34
PID 2692 wrote to memory of 2624	2692	dc535675df47e762a771611cbd06f1ccb2b1962ccbfca914a3448fef9ffa9d78.exe	34
PID 2692 wrote to memory of 2624	2692	dc535675df47e762a771611cbd06f1ccb2b1962ccbfca914a3448fef9ffa9d78.exe	34
PID 2692 wrote to memory of 1048	2692	dc535675df47e762a771611cbd06f1ccb2b1962ccbfca914a3448fef9ffa9d78.exe	36
PID 2692 wrote to memory of 1048	2692	dc535675df47e762a771611cbd06f1ccb2b1962ccbfca914a3448fef9ffa9d78.exe	36
PID 2692 wrote to memory of 1048	2692	dc535675df47e762a771611cbd06f1ccb2b1962ccbfca914a3448fef9ffa9d78.exe	36
PID 2692 wrote to memory of 2900	2692	dc535675df47e762a771611cbd06f1ccb2b1962ccbfca914a3448fef9ffa9d78.exe	38
PID 2692 wrote to memory of 2900	2692	dc535675df47e762a771611cbd06f1ccb2b1962ccbfca914a3448fef9ffa9d78.exe	38
PID 2692 wrote to memory of 2900	2692	dc535675df47e762a771611cbd06f1ccb2b1962ccbfca914a3448fef9ffa9d78.exe	38
PID 328 wrote to memory of 2952	328	taskeng.exe	42
PID 328 wrote to memory of 2952	328	taskeng.exe	42
PID 328 wrote to memory of 2952	328	taskeng.exe	42
PID 328 wrote to memory of 1700	328	taskeng.exe	44
PID 328 wrote to memory of 1700	328	taskeng.exe	44
PID 328 wrote to memory of 1700	328	taskeng.exe	44

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\dc535675df47e762a771611cbd06f1ccb2b1962ccbfca914a3448fef9ffa9d78.exe
"C:\Users\Admin\AppData\Local\Temp\dc535675df47e762a771611cbd06f1ccb2b1962ccbfca914a3448fef9ffa9d78.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2692
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\dc535675df47e762a771611cbd06f1ccb2b1962ccbfca914a3448fef9ffa9d78.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2820
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'dc535675df47e762a771611cbd06f1ccb2b1962ccbfca914a3448fef9ffa9d78.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2912
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming\BrowserUpdater.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2624
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'BrowserUpdater.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1048
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "BrowserUpdater" /tr "C:\Users\Admin\AppData\Roaming\BrowserUpdater.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2900

C:\Windows\system32\taskeng.exe
taskeng.exe {54CE04D4-A67C-4AE0-B174-037417985F74} S-1-5-21-2872745919-2748461613-2989606286-1000:CCJBVTGQ\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:328
- C:\Users\Admin\AppData\Roaming\BrowserUpdater.exe
  C:\Users\Admin\AppData\Roaming\BrowserUpdater.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2952
- C:\Users\Admin\AppData\Roaming\BrowserUpdater.exe
  C:\Users\Admin\AppData\Roaming\BrowserUpdater.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1700

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

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

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\BrowserUpdater.exe

Filesize
86KB

MD5
de16a00b42e978595cbd917d10ceb984

SHA1
fccc091d3ab6b4c26449e3a4ad0bc5eda73b6a7c

SHA256
dc535675df47e762a771611cbd06f1ccb2b1962ccbfca914a3448fef9ffa9d78

SHA512
aea3e18957bb3edbcf6a08fc43ed0e7792cfcd5a3c1a4b8a017b92e0467129a3879d3282ef73b505e49440fb34f294fc7c50712f6c8bd11b55d710004fed3122

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
d5d9ef40d1dd431088c051d1773dfa51

SHA1
6a2f1337812e88885cd6653824e0eb543d41e687

SHA256
30ea3dcd6f44e0f22d9c8c045e9b24043b22a31d44e7970a758389dbb22813f2

SHA512
04b79270e2ed0046c81afa846c7e5e0553f0efa871e56ccb6ceec3b419779326316b8b3ab98c7a6318069c7a32ff5298070606689c0a1d1d3694dbce54d7306d

Download Submit
memory/2692-1-0x0000000000F30000-0x0000000000F4C000-memory.dmp

Filesize
112KB

Download
memory/2692-0-0x000007FEF5BC3000-0x000007FEF5BC4000-memory.dmp

Filesize
4KB

Download
memory/2692-30-0x000000001B120000-0x000000001B1A0000-memory.dmp

Filesize
512KB

Download
memory/2692-29-0x000007FEF5BC3000-0x000007FEF5BC4000-memory.dmp

Filesize
4KB

Download
memory/2692-28-0x000000001B120000-0x000000001B1A0000-memory.dmp

Filesize
512KB

Download
memory/2820-7-0x000000001B730000-0x000000001BA12000-memory.dmp

Filesize
2.9MB

Download
memory/2820-8-0x0000000002040000-0x0000000002048000-memory.dmp

Filesize
32KB

Download
memory/2820-6-0x0000000002A00000-0x0000000002A80000-memory.dmp

Filesize
512KB

Download
memory/2912-15-0x0000000001EF0000-0x0000000001EF8000-memory.dmp

Filesize
32KB

Download
memory/2912-14-0x000000001B6D0000-0x000000001B9B2000-memory.dmp

Filesize
2.9MB

Download
memory/2952-34-0x0000000001160000-0x000000000117C000-memory.dmp

Filesize
112KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads