xworm | c352c942b6df33510094c7100fb9d48e36b8e1e2af40a60ccc360b58721c2390

General

Target

15415145.exe
Size

59KB
MD5

6c091ad6fae0fa76f44870d1a1b05cb4
SHA1

040f60c0ee3f4902f919025057e34ab4d11b1abd
SHA256

c352c942b6df33510094c7100fb9d48e36b8e1e2af40a60ccc360b58721c2390
SHA512

3a414f40f99e5847d9631c4ac1143c76e77db7ae42dd8c7aed2ebf1742ec73bb802d54d6cbde3b04f6b894a4cf731aa4e9dbad95166bade13f787b489d8e8d86
SSDEEP

1536:skyZtyUQ8sBkROLW+UzbTH3gfm2qt0OgSko7:skItfQ8sBkROUzbTQf+6OgK7

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

3.1

C2

known-savage.gl.at.ply.gg:45116

association-lectures.gl.at.ply.gg:32463

Attributes

Install_directory
%AppData%
install_file
USB.exe

aes.plain

Signatures

Detect Xworm Payload 4 IoCs

resource	yara_rule
behavioral3/memory/2816-1-0x0000000000B90000-0x0000000000BA6000-memory.dmp	family_xworm
behavioral3/files/0x000600000001e64d-8.dat	family_xworm
behavioral3/files/0x000b000000023d01-25.dat	family_xworm
behavioral3/memory/4716-32-0x0000000000690000-0x000000000069E000-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
1384	powershell.exe
1364	powershell.exe
4428	powershell.exe

Checks computer location settings 2 TTPs 2 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-1-5-21-1479699283-3000499823-2337359760-1000\Control Panel\International\Geo\Nation	15415145.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1479699283-3000499823-2337359760-1000\Control Panel\International\Geo\Nation	vmwhcy.exe

Drops startup file 4 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\15415145.lnk	15415145.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\15415145.lnk	15415145.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\vmwhcy.lnk	vmwhcy.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\vmwhcy.lnk	vmwhcy.exe

Executes dropped EXE 5 IoCs

pid	Process
2984	15415145.exe
1644	15415145.exe
4716	vmwhcy.exe
4132	ibennz.exe
3896	osgoxw.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1479699283-3000499823-2337359760-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\15415145 = "C:\\Users\\Admin\\AppData\\Roaming\\15415145.exe"	15415145.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1479699283-3000499823-2337359760-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\vmwhcy = "C:\\Users\\Admin\\AppData\\Roaming\\vmwhcy.exe"	vmwhcy.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 2 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
3684	schtasks.exe
3520	schtasks.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1384	powershell.exe
1384	powershell.exe
1364	powershell.exe
1364	powershell.exe
4428	powershell.exe
4428	powershell.exe

Suspicious use of AdjustPrivilegeToken 11 IoCs

description	pid	Process
Token: SeDebugPrivilege	2816	15415145.exe
Token: SeDebugPrivilege	2816	15415145.exe
Token: SeDebugPrivilege	2984	15415145.exe
Token: SeDebugPrivilege	1644	15415145.exe
Token: SeDebugPrivilege	4716	vmwhcy.exe
Token: SeDebugPrivilege	1384	powershell.exe
Token: SeDebugPrivilege	4132	ibennz.exe
Token: SeDebugPrivilege	1364	powershell.exe
Token: SeDebugPrivilege	4428	powershell.exe
Token: SeDebugPrivilege	3896	osgoxw.exe
Token: SeDebugPrivilege	4716	vmwhcy.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 2816 wrote to memory of 3684	2816	15415145.exe	91
PID 2816 wrote to memory of 3684	2816	15415145.exe	91
PID 2816 wrote to memory of 4716	2816	15415145.exe	109
PID 2816 wrote to memory of 4716	2816	15415145.exe	109
PID 4716 wrote to memory of 1384	4716	vmwhcy.exe	110
PID 4716 wrote to memory of 1384	4716	vmwhcy.exe	110
PID 2816 wrote to memory of 4132	2816	15415145.exe	112
PID 2816 wrote to memory of 4132	2816	15415145.exe	112
PID 4716 wrote to memory of 1364	4716	vmwhcy.exe	113
PID 4716 wrote to memory of 1364	4716	vmwhcy.exe	113
PID 4716 wrote to memory of 4428	4716	vmwhcy.exe	115
PID 4716 wrote to memory of 4428	4716	vmwhcy.exe	115
PID 4716 wrote to memory of 3520	4716	vmwhcy.exe	117
PID 4716 wrote to memory of 3520	4716	vmwhcy.exe	117
PID 2816 wrote to memory of 3896	2816	15415145.exe	119
PID 2816 wrote to memory of 3896	2816	15415145.exe	119

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\15415145.exe
"C:\Users\Admin\AppData\Local\Temp\15415145.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2816
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "15415145" /tr "C:\Users\Admin\AppData\Roaming\15415145.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:3684
- C:\Users\Admin\AppData\Local\Temp\vmwhcy.exe
  "C:\Users\Admin\AppData\Local\Temp\vmwhcy.exe"
  2⤵
  - Checks computer location settings
  - Drops startup file
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4716
- - 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\vmwhcy.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1384
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'vmwhcy.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1364
- - 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\vmwhcy.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4428
- - C:\Windows\System32\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "vmwhcy" /tr "C:\Users\Admin\AppData\Roaming\vmwhcy.exe"
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:3520
- C:\Users\Admin\AppData\Local\Temp\ibennz.exe
  "C:\Users\Admin\AppData\Local\Temp\ibennz.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:4132
- C:\Users\Admin\AppData\Local\Temp\osgoxw.exe
  "C:\Users\Admin\AppData\Local\Temp\osgoxw.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:3896

C:\Users\Admin\AppData\Roaming\15415145.exe
C:\Users\Admin\AppData\Roaming\15415145.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2984

C:\Users\Admin\AppData\Roaming\15415145.exe
C:\Users\Admin\AppData\Roaming\15415145.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1644

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\15415145.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
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\Temp\__PSScriptPolicyTest_mclhzbq4.tdl.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

Filesize
34KB

MD5
950d739da650457fab6a225545794238

SHA1
e965286161ecda1b8c0072d8a2d80c191bb15705

SHA256
a571fcac5384158c4927e7c7cf07182b68eccf67845ba927beae44cd9835e3f8

SHA512
b7b91343176c5a7f6408b21fbc96c23d0b02c080b846e29f304ba91de1d0f37a772953e7ab65d1d627cb3490fbef3b85681564e878d8dcda57c0897dbad1d19b

Download Submit
C:\Users\Admin\AppData\Roaming\15415145.exe

Filesize
59KB

MD5
6c091ad6fae0fa76f44870d1a1b05cb4

SHA1
040f60c0ee3f4902f919025057e34ab4d11b1abd

SHA256
c352c942b6df33510094c7100fb9d48e36b8e1e2af40a60ccc360b58721c2390

SHA512
3a414f40f99e5847d9631c4ac1143c76e77db7ae42dd8c7aed2ebf1742ec73bb802d54d6cbde3b04f6b894a4cf731aa4e9dbad95166bade13f787b489d8e8d86

Download Submit
memory/1384-34-0x000001E5BF460000-0x000001E5BF482000-memory.dmp

Filesize
136KB

Download
memory/2816-12-0x00007FFA97880000-0x00007FFA98341000-memory.dmp

Filesize
10.8MB

Download
memory/2816-11-0x00007FFA97883000-0x00007FFA97885000-memory.dmp

Filesize
8KB

Download
memory/2816-0-0x00007FFA97883000-0x00007FFA97885000-memory.dmp

Filesize
8KB

Download
memory/2816-10-0x00007FFA97880000-0x00007FFA98341000-memory.dmp

Filesize
10.8MB

Download
memory/2816-1-0x0000000000B90000-0x0000000000BA6000-memory.dmp

Filesize
88KB

Download
memory/2984-15-0x00007FFA97880000-0x00007FFA98341000-memory.dmp

Filesize
10.8MB

Download
memory/2984-17-0x00007FFA97880000-0x00007FFA98341000-memory.dmp

Filesize
10.8MB

Download
memory/4716-32-0x0000000000690000-0x000000000069E000-memory.dmp

Filesize
56KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads