xworm | 264cfa973e4a1b05c208728074dc9b072c180502494644d324086ba66f791c7c

General

Target

Dettex.exe
Size

90KB
MD5

1c2a253948135b876e3fe148f45040f1
SHA1

c546d4e05316819469003b332b4bd2a9c4e5f5fd
SHA256

264cfa973e4a1b05c208728074dc9b072c180502494644d324086ba66f791c7c
SHA512

b8e2887c5a7562a001ed013aee2f747aae3e916c85810aff2e857272f75be6c06fd8774a4c2d3676a6fe60dce57f4f9f223092f69036dde4378b71ed9fae7b7f
SSDEEP

1536:4xnmcCQLrqkUScY177xIO0bOU5pXZX8b60/S/OPEp9QcmzhRaA5am:MmWn9Uy76ZbHp8/2O49IFRN5am

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

127.0.0.1:22100

wide-casting.gl.at.ply.gg:22100

Attributes

Install_directory
%AppData%
install_file
Dettex.exe

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral2/memory/440-1-0x00000000005E0000-0x00000000005FC000-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 4 IoCs

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

execution

PowerShell

T1059.001

pid	Process
4500	powershell.exe
948	powershell.exe
3972	powershell.exe
2124	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-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	Dettex.exe

Drops startup file 2 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Dettex.lnk	Dettex.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Dettex.lnk	Dettex.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-1-5-21-3442511616-637977696-3186306149-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Dettex = "C:\\Users\\Admin\\AppData\\Roaming\\Dettex.exe"	Dettex.exe

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
14	ip-api.com

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
4500	powershell.exe
4500	powershell.exe
948	powershell.exe
948	powershell.exe
3972	powershell.exe
3972	powershell.exe
2124	powershell.exe
2124	powershell.exe
440	Dettex.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	440	Dettex.exe
Token: SeDebugPrivilege	4500	powershell.exe
Token: SeDebugPrivilege	948	powershell.exe
Token: SeDebugPrivilege	3972	powershell.exe
Token: SeDebugPrivilege	2124	powershell.exe
Token: SeDebugPrivilege	440	Dettex.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
440	Dettex.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 440 wrote to memory of 4500	440	Dettex.exe	83
PID 440 wrote to memory of 4500	440	Dettex.exe	83
PID 440 wrote to memory of 948	440	Dettex.exe	85
PID 440 wrote to memory of 948	440	Dettex.exe	85
PID 440 wrote to memory of 3972	440	Dettex.exe	87
PID 440 wrote to memory of 3972	440	Dettex.exe	87
PID 440 wrote to memory of 2124	440	Dettex.exe	89
PID 440 wrote to memory of 2124	440	Dettex.exe	89

C:\Users\Admin\AppData\Local\Temp\Dettex.exe
"C:\Users\Admin\AppData\Local\Temp\Dettex.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:440
- 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\Dettex.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4500
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Dettex.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:948
- 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\Dettex.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3972
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Dettex.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2124

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

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\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
d28a889fd956d5cb3accfbaf1143eb6f

SHA1
157ba54b365341f8ff06707d996b3635da8446f7

SHA256
21e5d7ccf80a293e6ba30ed728846ca19c929c52b96e2c8d34e27cd2234f1d45

SHA512
0b6d88deb9be85722e6a78d5886d49f2caf407a59e128d2b4ed74c1356f9928c40048a62731959f2460e9ff9d9feee311043d2a37abe3bb92c2b76a44281478c

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

Filesize
944B

MD5
bbc2b43d5e574fe7d193c6fc0eb7302c

SHA1
f22683b94ad593fd0513fef37df1fb5d0880cc22

SHA256
0efa2469ae0b02af024fd0e2828ccab085eaefef3736b3bda0ba631e3a45aa48

SHA512
287449b168297a5176b26777f2f5ca3284d967b93274db8b3029d130049073560a10e418607f670d08194193aa91fc9cd174717e7c1d051b09c23857fe3ab9d2

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

Filesize
944B

MD5
07ab6cc81c5230a598c0ad1711b6bd97

SHA1
de7e270e12d447dfc5896b7c96777eb32725778a

SHA256
900aa2c83ec8773c3f9705f75b28fff0eaca57f7adb33dc82564d7ea8f8069a3

SHA512
ffef0ad0824ea0fdab29eb3c44448100f79365a1729c7665eba9aef85a88e60901bc6a6c248de15a28d21be9ce5839d68861e4449ff557d8845927c740ba3a25

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_pqatgajl.zqp.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/440-1-0x00000000005E0000-0x00000000005FC000-memory.dmp

Filesize
112KB

Download
memory/440-2-0x00007FFDFA730000-0x00007FFDFB1F1000-memory.dmp

Filesize
10.8MB

Download
memory/440-0-0x00007FFDFA733000-0x00007FFDFA735000-memory.dmp

Filesize
8KB

Download
memory/440-58-0x00007FFDFA730000-0x00007FFDFB1F1000-memory.dmp

Filesize
10.8MB

Download
memory/440-57-0x00007FFDFA733000-0x00007FFDFA735000-memory.dmp

Filesize
8KB

Download
memory/4500-3-0x00007FFDFA730000-0x00007FFDFB1F1000-memory.dmp

Filesize
10.8MB

Download
memory/4500-18-0x00007FFDFA730000-0x00007FFDFB1F1000-memory.dmp

Filesize
10.8MB

Download
memory/4500-15-0x00007FFDFA730000-0x00007FFDFB1F1000-memory.dmp

Filesize
10.8MB

Download
memory/4500-11-0x00000282D7F50000-0x00000282D7F72000-memory.dmp

Filesize
136KB

Download
memory/4500-12-0x00007FFDFA730000-0x00007FFDFB1F1000-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