xworm | ccaf48cc722a2f0f9766cc4e83c1469e498fc67d2f8ed96942a5764d3591050e

General

Target

idk.exe
Size

94KB
MD5

f88781b7415e7b04fd13b1bbbf2009b2
SHA1

df9072bf61727db083155c04b47ce48744b23ee5
SHA256

ccaf48cc722a2f0f9766cc4e83c1469e498fc67d2f8ed96942a5764d3591050e
SHA512

6c16f8287f2f14b452025be0638fb827fa6e4a3556b21119c6195bc066d577f2c1df9a8b3f500f7e56d2b33e0552c7cbec8730bd3ac14704a6250280b1aac3db
SSDEEP

1536:BItB2JRcId+cS7K/aATFcmJi1vJYbmG0VaTCVp8tA8qbQXpPQ8Qep+MDaj361dw:CyFdDSWjB0vcL0VwCz8+8qbwPtVkOg3r

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

IDKTOBEHONESTNIGAS-56344.portmap.io:56344

Attributes

Install_directory
%LocalAppData%

Signatures

Detect Xworm Payload 5 IoCs

resource	yara_rule
behavioral1/files/0x00090000000120f1-5.dat	family_xworm
behavioral1/memory/3012-7-0x0000000000880000-0x000000000089A000-memory.dmp	family_xworm
behavioral1/memory/2584-41-0x0000000000350000-0x000000000036A000-memory.dmp	family_xworm
behavioral1/memory/548-44-0x00000000002A0000-0x00000000002BA000-memory.dmp	family_xworm
behavioral1/memory/3064-46-0x0000000001010000-0x000000000102A000-memory.dmp	family_xworm

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

Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs

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

execution

PowerShell

T1059.001

pid	Process
2736	powershell.exe
2652	powershell.exe
2688	powershell.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk	svchost.scr
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk	svchost.scr

Executes dropped EXE 4 IoCs

pid	Process
3012	svchost.scr
2584	svchost.scr
548	svchost.scr
3064	svchost.scr

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-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\Users\\Admin\\AppData\\Local\\svchost.scr"	svchost.scr

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
4	ip-api.com

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

System Information Discovery
T1082

Modifies system certificate store 2 TTPs 2 IoCs

defense_evasion spyware trojan

Install Root Certificate

T1553.004

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\ROOT\Certificates\CABD2A79A1076A31F21D253635CB039D4329A5E8	svchost.scr
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\ROOT\Certificates\CABD2A79A1076A31F21D253635CB039D4329A5E8\Blob = 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	svchost.scr

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
1748	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2736	powershell.exe
2652	powershell.exe
2688	powershell.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	3012	svchost.scr
Token: SeDebugPrivilege	2736	powershell.exe
Token: SeDebugPrivilege	2652	powershell.exe
Token: SeDebugPrivilege	2688	powershell.exe
Token: SeDebugPrivilege	3012	svchost.scr
Token: SeDebugPrivilege	2584	svchost.scr
Token: SeDebugPrivilege	548	svchost.scr
Token: SeDebugPrivilege	3064	svchost.scr

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 2552 wrote to memory of 3012	2552	idk.exe	30
PID 2552 wrote to memory of 3012	2552	idk.exe	30
PID 2552 wrote to memory of 3012	2552	idk.exe	30
PID 3012 wrote to memory of 2736	3012	svchost.scr	33
PID 3012 wrote to memory of 2736	3012	svchost.scr	33
PID 3012 wrote to memory of 2736	3012	svchost.scr	33
PID 3012 wrote to memory of 2652	3012	svchost.scr	35
PID 3012 wrote to memory of 2652	3012	svchost.scr	35
PID 3012 wrote to memory of 2652	3012	svchost.scr	35
PID 3012 wrote to memory of 2688	3012	svchost.scr	37
PID 3012 wrote to memory of 2688	3012	svchost.scr	37
PID 3012 wrote to memory of 2688	3012	svchost.scr	37
PID 3012 wrote to memory of 1748	3012	svchost.scr	39
PID 3012 wrote to memory of 1748	3012	svchost.scr	39
PID 3012 wrote to memory of 1748	3012	svchost.scr	39
PID 1428 wrote to memory of 2584	1428	taskeng.exe	42
PID 1428 wrote to memory of 2584	1428	taskeng.exe	42
PID 1428 wrote to memory of 2584	1428	taskeng.exe	42
PID 1428 wrote to memory of 548	1428	taskeng.exe	43
PID 1428 wrote to memory of 548	1428	taskeng.exe	43
PID 1428 wrote to memory of 548	1428	taskeng.exe	43
PID 1428 wrote to memory of 3064	1428	taskeng.exe	44
PID 1428 wrote to memory of 3064	1428	taskeng.exe	44
PID 1428 wrote to memory of 3064	1428	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\idk.exe
"C:\Users\Admin\AppData\Local\Temp\idk.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2552
- C:\Users\Admin\AppData\Roaming\svchost.scr
  "C:\Users\Admin\AppData\Roaming\svchost.scr" /S
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Adds Run key to start application
  - Modifies system certificate store
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3012
- - 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\svchost.scr'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2736
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svchost.scr'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2652
- - 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\svchost.scr'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2688
- - C:\Windows\System32\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "svchost" /tr "C:\Users\Admin\AppData\Local\svchost.scr"
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:1748

C:\Windows\system32\taskeng.exe
taskeng.exe {F4CB7DCF-D584-430D-A106-27E208A81207} S-1-5-21-2872745919-2748461613-2989606286-1000:CCJBVTGQ\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:1428
- C:\Users\Admin\AppData\Local\svchost.scr
  C:\Users\Admin\AppData\Local\svchost.scr "C:\Users\Admin\AppData\Local\svchost.scr"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2584
- C:\Users\Admin\AppData\Local\svchost.scr
  C:\Users\Admin\AppData\Local\svchost.scr "C:\Users\Admin\AppData\Local\svchost.scr"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:548
- C:\Users\Admin\AppData\Local\svchost.scr
  C:\Users\Admin\AppData\Local\svchost.scr "C:\Users\Admin\AppData\Local\svchost.scr"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:3064

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

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

2

T1112

Subvert Trust Controls

1

T1553

Install Root Certificate

1

T1553.004

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\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
1170b422d714fd6ceb65f7fcacbdf109

SHA1
662e77023b4b5e44cb9ee07ffce2764a479f9d45

SHA256
fe37d280d546a92ba6a963e39bcce1af7901af827949d16f001f308631ed594d

SHA512
ae5a0586a18d5522a5b9b1d40831333ad19cb39e3ab01d2c4eec21b8c9eb10d8406dbd9d32f775a6300ce649987deca96ff75c8422d1c3497f6de3c52ec597bb

Download Submit
C:\Users\Admin\AppData\Roaming\svchost.scr

Filesize
79KB

MD5
0b192c8ec04f4dcd360957eb478221d2

SHA1
522a5c7336a31c23efec4b8ccab7ce7c17d620d4

SHA256
ea6a26539f74891663a03fc3cf348ef53c14295ef3662b9a29b211a8d0503e1c

SHA512
7d5dd7c9aca799a8dc15eea9bf767ca6c7e2145ad848d2b2cefb3548cffb30bbbb3e3933aac7c602e4a1b5f02e14e46b7edbcc3945e1aa2e3cc6219941e90eb6

Download Submit
memory/548-44-0x00000000002A0000-0x00000000002BA000-memory.dmp

Filesize
104KB

Download
memory/2552-1-0x0000000000BF0000-0x0000000000C0E000-memory.dmp

Filesize
120KB

Download
memory/2552-0-0x000007FEF5023000-0x000007FEF5024000-memory.dmp

Filesize
4KB

Download
memory/2584-41-0x0000000000350000-0x000000000036A000-memory.dmp

Filesize
104KB

Download
memory/2652-21-0x000000001B7E0000-0x000000001BAC2000-memory.dmp

Filesize
2.9MB

Download
memory/2652-22-0x00000000003A0000-0x00000000003A8000-memory.dmp

Filesize
32KB

Download
memory/2736-14-0x000000001B6D0000-0x000000001B9B2000-memory.dmp

Filesize
2.9MB

Download
memory/2736-15-0x0000000001EF0000-0x0000000001EF8000-memory.dmp

Filesize
32KB

Download
memory/3012-8-0x000007FEF5020000-0x000007FEF5A0C000-memory.dmp

Filesize
9.9MB

Download
memory/3012-36-0x000007FEF5020000-0x000007FEF5A0C000-memory.dmp

Filesize
9.9MB

Download
memory/3012-37-0x000007FEF5020000-0x000007FEF5A0C000-memory.dmp

Filesize
9.9MB

Download
memory/3012-9-0x000007FEF5020000-0x000007FEF5A0C000-memory.dmp

Filesize
9.9MB

Download
memory/3012-7-0x0000000000880000-0x000000000089A000-memory.dmp

Filesize
104KB

Download
memory/3064-46-0x0000000001010000-0x000000000102A000-memory.dmp

Filesize
104KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads