xworm | 7df7abdaaabc41cc080678e71723d5a3ef855abe8c154b87e39664640c8be48c

General

Target

SolaraX.exe
Size

75KB
MD5

bb4297c0a1be56440bc497fb1c276a82
SHA1

71db449f4de9b90906866b830ebdabc12c518c20
SHA256

7df7abdaaabc41cc080678e71723d5a3ef855abe8c154b87e39664640c8be48c
SHA512

a534e7f9107f226d127e0bc8472bb6d35c1eccfd38096ac13f1fb6aef885e52358e6766a604c735a50b0d8f2bb8c9b9bdf1f3e0fa418ccaed5eadadc504deab2
SSDEEP

1536:2MuQthAcx9+rFQCb9Hi/bWPUtb/UVbV6foaOirUpPyUS:7L9+rh0/bWPBVUROirUw3

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

127.0.0.1:34930

minimum-ball.gl.at.ply.gg:34930

Attributes

Install_directory
%AppData%
install_file
SolaraX.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral1/memory/3524-1-0x0000000000FF0000-0x000000000100A000-memory.dmp	family_xworm
behavioral1/files/0x000600000001e934-60.dat	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
752	powershell.exe
2416	powershell.exe
2664	powershell.exe
3196	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-1-5-21-2593460650-190333679-3676257533-1000\Control Panel\International\Geo\Nation	SolaraX.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 2 IoCs

pid	Process
3596	SolaraX.exe
3452	SolaraX.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-1-5-21-2593460650-190333679-3676257533-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SolaraX = "C:\\Users\\Admin\\AppData\\Roaming\\SolaraX.exe"	SolaraX.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
4492	schtasks.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
752	powershell.exe
752	powershell.exe
752	powershell.exe
2416	powershell.exe
2416	powershell.exe
2664	powershell.exe
2664	powershell.exe
3196	powershell.exe
3196	powershell.exe
3524	SolaraX.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	3524	SolaraX.exe
Token: SeDebugPrivilege	752	powershell.exe
Token: SeDebugPrivilege	2416	powershell.exe
Token: SeDebugPrivilege	2664	powershell.exe
Token: SeDebugPrivilege	3196	powershell.exe
Token: SeDebugPrivilege	3524	SolaraX.exe
Token: SeDebugPrivilege	3596	SolaraX.exe
Token: SeDebugPrivilege	3452	SolaraX.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3524	SolaraX.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 3524 wrote to memory of 752	3524	SolaraX.exe	91
PID 3524 wrote to memory of 752	3524	SolaraX.exe	91
PID 3524 wrote to memory of 2416	3524	SolaraX.exe	94
PID 3524 wrote to memory of 2416	3524	SolaraX.exe	94
PID 3524 wrote to memory of 2664	3524	SolaraX.exe	96
PID 3524 wrote to memory of 2664	3524	SolaraX.exe	96
PID 3524 wrote to memory of 3196	3524	SolaraX.exe	98
PID 3524 wrote to memory of 3196	3524	SolaraX.exe	98
PID 3524 wrote to memory of 4492	3524	SolaraX.exe	101
PID 3524 wrote to memory of 4492	3524	SolaraX.exe	101

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\SolaraX.exe
"C:\Users\Admin\AppData\Local\Temp\SolaraX.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:3524
- 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\SolaraX.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:752
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'SolaraX.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2416
- 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\SolaraX.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2664
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'SolaraX.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3196
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "SolaraX" /tr "C:\Users\Admin\AppData\Roaming\SolaraX.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:4492

C:\Users\Admin\AppData\Roaming\SolaraX.exe
C:\Users\Admin\AppData\Roaming\SolaraX.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3596

C:\Users\Admin\AppData\Roaming\SolaraX.exe
C:\Users\Admin\AppData\Roaming\SolaraX.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3452

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\SolaraX.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
77d622bb1a5b250869a3238b9bc1402b

SHA1
d47f4003c2554b9dfc4c16f22460b331886b191b

SHA256
f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb

SHA512
d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9

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

Filesize
944B

MD5
6ca03841a619868438b436bbaba21ab4

SHA1
11bd79a4267e2c942c92f20a319780ae1fa6cadb

SHA256
b5d9415a62623fcd6fdd244e361a2126a30b22e2758e2797a8d1b228291ca72b

SHA512
4c89eff38a7cb9583818332ad04ce2564b8b3733b5771210814e37347a485fa0127095c15e9524028709ed20b298991c5a40efb42ea5724206d9cae5cc529bed

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

Filesize
944B

MD5
9a7c69e4a18c20845fb298bad1a1ba2d

SHA1
b436bfeb3238b3af7ae09dcfb134bf89ec9e32c0

SHA256
f649676eb191d1916ced7fc80b7e0e72c523b35a866a2e7a985362705ea69d01

SHA512
11243e7273a57ab71a91d48a549012ef587d5089dec349f4ca93d5e587d2e1e1ca65545761719fd34339043af1371c126383db9965307255b23383619f137aec

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_l0cbn32i.gq1.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

Filesize
75KB

MD5
bb4297c0a1be56440bc497fb1c276a82

SHA1
71db449f4de9b90906866b830ebdabc12c518c20

SHA256
7df7abdaaabc41cc080678e71723d5a3ef855abe8c154b87e39664640c8be48c

SHA512
a534e7f9107f226d127e0bc8472bb6d35c1eccfd38096ac13f1fb6aef885e52358e6766a604c735a50b0d8f2bb8c9b9bdf1f3e0fa418ccaed5eadadc504deab2

Download Submit
memory/752-12-0x00007FF9A9D20000-0x00007FF9AA7E1000-memory.dmp

Filesize
10.8MB

Download
memory/752-17-0x00007FF9A9D20000-0x00007FF9AA7E1000-memory.dmp

Filesize
10.8MB

Download
memory/752-14-0x00007FF9A9D20000-0x00007FF9AA7E1000-memory.dmp

Filesize
10.8MB

Download
memory/752-13-0x00007FF9A9D20000-0x00007FF9AA7E1000-memory.dmp

Filesize
10.8MB

Download
memory/752-2-0x000001D7735F0000-0x000001D773612000-memory.dmp

Filesize
136KB

Download
memory/3524-0-0x00007FF9A9D23000-0x00007FF9A9D25000-memory.dmp

Filesize
8KB

Download
memory/3524-56-0x00007FF9A9D20000-0x00007FF9AA7E1000-memory.dmp

Filesize
10.8MB

Download
memory/3524-57-0x00007FF9A9D23000-0x00007FF9A9D25000-memory.dmp

Filesize
8KB

Download
memory/3524-58-0x00007FF9A9D20000-0x00007FF9AA7E1000-memory.dmp

Filesize
10.8MB

Download
memory/3524-1-0x0000000000FF0000-0x000000000100A000-memory.dmp

Filesize
104KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads