xworm | ba599c53479ad87732d7d5dab8a4cca44bb55cbc134e6054ddb6414e9cfd1508

General

Target

X.exe
Size

63KB
MD5

f16a3a537f873f3e7bd334d6cf93c525
SHA1

4fbedba1adbeda56019534b1bf74ff47ed814e61
SHA256

ba599c53479ad87732d7d5dab8a4cca44bb55cbc134e6054ddb6414e9cfd1508
SHA512

032ec3782acaa2d21b24b8aae659e2bede424e594fee00aafbcf66840a8fd048fceae7ef2a8ad449a38590041d241c7edd1c219e9b5ffb3b5e8993a01ba4011a
SSDEEP

1536:zDJ1KwwGadRqckbTz0hdOWwdx6mf6ZOTLGuJi:p14GURjkbTnWvOTJJi

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

127.0.0.1:7787

92.43.187.26:7787

Attributes

Install_directory
%Temp%
install_file
St.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/2664-1-0x0000000000EA0000-0x0000000000EB6000-memory.dmp	family_xworm
behavioral2/files/0x00190000000233e5-55.dat	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
2736	powershell.exe
1036	powershell.exe
880	powershell.exe
3060	powershell.exe

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-1-5-21-1705699165-553239100-4129523827-1000\Control Panel\International\Geo\Nation	X.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 2 IoCs

pid	Process
3744	St.exe
5088	St.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-1-5-21-1705699165-553239100-4129523827-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\St = "C:\\Users\\Admin\\AppData\\Local\\Temp\\St.exe"	X.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
1304	schtasks.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
2736	powershell.exe
2736	powershell.exe
1036	powershell.exe
1036	powershell.exe
880	powershell.exe
880	powershell.exe
3060	powershell.exe
3060	powershell.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	2664	X.exe
Token: SeDebugPrivilege	2736	powershell.exe
Token: SeDebugPrivilege	1036	powershell.exe
Token: SeDebugPrivilege	880	powershell.exe
Token: SeDebugPrivilege	3060	powershell.exe
Token: SeDebugPrivilege	2664	X.exe
Token: SeDebugPrivilege	3744	St.exe
Token: SeDebugPrivilege	5088	St.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 2664 wrote to memory of 2736	2664	X.exe	87
PID 2664 wrote to memory of 2736	2664	X.exe	87
PID 2664 wrote to memory of 1036	2664	X.exe	89
PID 2664 wrote to memory of 1036	2664	X.exe	89
PID 2664 wrote to memory of 880	2664	X.exe	91
PID 2664 wrote to memory of 880	2664	X.exe	91
PID 2664 wrote to memory of 3060	2664	X.exe	93
PID 2664 wrote to memory of 3060	2664	X.exe	93
PID 2664 wrote to memory of 1304	2664	X.exe	99
PID 2664 wrote to memory of 1304	2664	X.exe	99

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\X.exe
"C:\Users\Admin\AppData\Local\Temp\X.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2664
- 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\X.exe'
  2⤵
  - 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 'X.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1036
- 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\St.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:880
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'St.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3060
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "St" /tr "C:\Users\Admin\AppData\Local\Temp\St.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:1304

C:\Users\Admin\AppData\Local\Temp\St.exe
C:\Users\Admin\AppData\Local\Temp\St.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3744

C:\Users\Admin\AppData\Local\Temp\St.exe
C:\Users\Admin\AppData\Local\Temp\St.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:5088

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

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\St.exe.log

Filesize
654B

MD5
2ff39f6c7249774be85fd60a8f9a245e

SHA1
684ff36b31aedc1e587c8496c02722c6698c1c4e

SHA256
e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

SHA512
1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
d85ba6ff808d9e5444a4b369f5bc2730

SHA1
31aa9d96590fff6981b315e0b391b575e4c0804a

SHA256
84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

SHA512
8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
59d97011e091004eaffb9816aa0b9abd

SHA1
1602a56b01dd4b7c577ca27d3117e4bcc1aa657b

SHA256
18f381e0db020a763b8c515c346ef58679ab9c403267eacfef5359e272f7e71d

SHA512
d9ca49c1a17580981e2c1a50d73c0eecaa7a62f8514741512172e395af2a3d80aeb0f71c58bc7f52c18246d57ba67af09b6bff4776877d6cc6f0245c30e092d6

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
c08aea9c78561a5f00398a723fdf2925

SHA1
2c880cbb5d02169a86bb9517ce2a0184cb177c6e

SHA256
63d2688b92da4d1bb69980b7998b9be1595dd9e53951434a9414d019c4f825a7

SHA512
d30db2f55bbda7102ffe90520d233355633313dcc77cdb69a26fdbb56e59dd41793def23d69dc5dc3f94c5bd41d3c26b3628886fd2edbed2df0b332e9a21f95c

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
9bc110200117a3752313ca2acaf8a9e1

SHA1
fda6b7da2e7b0175b391475ca78d1b4cf2147cd3

SHA256
c88e4bbb64f7fa31429ebe82c1cf07785c44486f37576f783a26ac856e02a4eb

SHA512
1f1af32aa18a8cbfcc65b0d4fb7e6ca2705f125eaa85789e981ee68b90c64522e954825abf460d4b4f97567715dfae8d9b0a25a4d54d10bc4c257c472f2e80fb

Download Submit
C:\Users\Admin\AppData\Local\Temp\St.exe

Filesize
63KB

MD5
f16a3a537f873f3e7bd334d6cf93c525

SHA1
4fbedba1adbeda56019534b1bf74ff47ed814e61

SHA256
ba599c53479ad87732d7d5dab8a4cca44bb55cbc134e6054ddb6414e9cfd1508

SHA512
032ec3782acaa2d21b24b8aae659e2bede424e594fee00aafbcf66840a8fd048fceae7ef2a8ad449a38590041d241c7edd1c219e9b5ffb3b5e8993a01ba4011a

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_nhacxlyd.wlo.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/2664-53-0x00007FF9DBB30000-0x00007FF9DC5F1000-memory.dmp

Filesize
10.8MB

Download
memory/2664-0-0x00007FF9DBB33000-0x00007FF9DBB35000-memory.dmp

Filesize
8KB

Download
memory/2664-54-0x00007FF9DBB33000-0x00007FF9DBB35000-memory.dmp

Filesize
8KB

Download
memory/2664-59-0x00007FF9DBB30000-0x00007FF9DC5F1000-memory.dmp

Filesize
10.8MB

Download
memory/2664-1-0x0000000000EA0000-0x0000000000EB6000-memory.dmp

Filesize
88KB

Download
memory/2736-14-0x00007FF9DBB30000-0x00007FF9DC5F1000-memory.dmp

Filesize
10.8MB

Download
memory/2736-11-0x000001A1948C0000-0x000001A1948E2000-memory.dmp

Filesize
136KB

Download
memory/2736-57-0x00007FF9DBB30000-0x00007FF9DC5F1000-memory.dmp

Filesize
10.8MB

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads