xworm | 68a3a8d3147a285c2b76e64cbb0a3bb4803aa35a35ff9fb964512ba0cec68743

General

Target

6JATJ_Solara.exe
Size

44KB
MD5

122fbe0d84957e8e5fa9385c12da3d0f
SHA1

ff9729798bca408c4cdbf4f44a2a25b95a7fc163
SHA256

68a3a8d3147a285c2b76e64cbb0a3bb4803aa35a35ff9fb964512ba0cec68743
SHA512

9ef2f06d78d5722e61ef55ceea2e19c4b12b7c0c0e95097b90ff6d98e5d2208921742fb4c31af816d20366de087775d0eb67de7b9c532f29eff54e43690672a5
SSDEEP

768:GNTRmetisWt2tKdouL3ZE9R9yFRPG9Xb6OOChLsGO6Mi5:GNTketz8npE92Fw9Xb6OOCVVO9i5

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

Mutex

6vmX68wzVkGMx0vS

Attributes

Install_directory
%AppData%
install_file
USB.exe
pastebin_url
https://pastebin.com/raw/FgmKAhUD

aes.plain

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/3344-1-0x0000000000CF0000-0x0000000000D02000-memory.dmp	family_xworm
behavioral2/files/0x000800000001e92d-58.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
1860	powershell.exe
1992	powershell.exe
3796	powershell.exe
3412	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-1-5-21-1161330783-2912525651-1278508834-1000\Control Panel\International\Geo\Nation	6JATJ_Solara.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk	6JATJ_Solara.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk	6JATJ_Solara.exe

Executes dropped EXE 2 IoCs

pid	Process
3648	svchost
1940	svchost

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-1-5-21-1161330783-2912525651-1278508834-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\Users\\Admin\\AppData\\Roaming\\svchost"	6JATJ_Solara.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
32	pastebin.com
33	pastebin.com

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
1944	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
3796	powershell.exe
3796	powershell.exe
3412	powershell.exe
3412	powershell.exe
1860	powershell.exe
1860	powershell.exe
1992	powershell.exe
1992	powershell.exe
3344	6JATJ_Solara.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	3344	6JATJ_Solara.exe
Token: SeDebugPrivilege	3796	powershell.exe
Token: SeDebugPrivilege	3412	powershell.exe
Token: SeDebugPrivilege	1860	powershell.exe
Token: SeDebugPrivilege	1992	powershell.exe
Token: SeDebugPrivilege	3344	6JATJ_Solara.exe
Token: SeDebugPrivilege	3648	svchost
Token: SeDebugPrivilege	1940	svchost

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3344	6JATJ_Solara.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 3344 wrote to memory of 3796	3344	6JATJ_Solara.exe	92
PID 3344 wrote to memory of 3796	3344	6JATJ_Solara.exe	92
PID 3344 wrote to memory of 3412	3344	6JATJ_Solara.exe	96
PID 3344 wrote to memory of 3412	3344	6JATJ_Solara.exe	96
PID 3344 wrote to memory of 1860	3344	6JATJ_Solara.exe	98
PID 3344 wrote to memory of 1860	3344	6JATJ_Solara.exe	98
PID 3344 wrote to memory of 1992	3344	6JATJ_Solara.exe	100
PID 3344 wrote to memory of 1992	3344	6JATJ_Solara.exe	100
PID 3344 wrote to memory of 1944	3344	6JATJ_Solara.exe	102
PID 3344 wrote to memory of 1944	3344	6JATJ_Solara.exe	102

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\6JATJ_Solara.exe
"C:\Users\Admin\AppData\Local\Temp\6JATJ_Solara.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:3344
- 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\6JATJ_Solara.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3796
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess '6JATJ_Solara.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3412
- 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'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1860
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svchost'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1992
- 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\Roaming\svchost"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:1944

C:\Users\Admin\AppData\Roaming\svchost
C:\Users\Admin\AppData\Roaming\svchost
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3648

C:\Users\Admin\AppData\Roaming\svchost
C:\Users\Admin\AppData\Roaming\svchost
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1940

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

Web Service

1

T1102

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\CLR_v4.0\UsageLogs\svchost.log

Filesize
654B

MD5
2ff39f6c7249774be85fd60a8f9a245e

SHA1
684ff36b31aedc1e587c8496c02722c6698c1c4e

SHA256
e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

SHA512
1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

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

Filesize
944B

MD5
6d42b6da621e8df5674e26b799c8e2aa

SHA1
ab3ce1327ea1eeedb987ec823d5e0cb146bafa48

SHA256
5ab6a1726f425c6d0158f55eb8d81754ddedd51e651aa0a899a29b7a58619c4c

SHA512
53faffbda8a835bc1143e894c118c15901a5fd09cfc2224dd2f754c06dc794897315049a579b9a8382d4564f071576045aaaf824019b7139d939152dca38ce29

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

Filesize
944B

MD5
eb1ad317bd25b55b2bbdce8a28a74a94

SHA1
98a3978be4d10d62e7411946474579ee5bdc5ea6

SHA256
9e94e7c9ac6134ee30e79498558aa1a5a1ac79a643666c3f8922eed215dd3a98

SHA512
d011f266c0240d84470c0f9577cd9e4927309bd19bb38570ca9704ed8e1d159f9bea982a59d3eefef72ce7a10bd81208b82e88ef57c7af587f7437a89769adc0

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

Filesize
944B

MD5
40b9ac38a232729536f8764039b17139

SHA1
e1c194c09e2ccfb080dcb61b4f3a5b661f82f0af

SHA256
99372ad38570a8021ee6c4f7a41bbc2499eb76381dbd594ea413ec84ded2ccf3

SHA512
b37990cbd31cb9dce8e5c14a8996d88cdaf30dd1c279ed1804b92bd1bdb074f98421d563f26bc68d969df200fb4feb93bb26d9edb01c7bf4583e8cc9fca34887

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ppfwtgqo.pab.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

Filesize
44KB

MD5
122fbe0d84957e8e5fa9385c12da3d0f

SHA1
ff9729798bca408c4cdbf4f44a2a25b95a7fc163

SHA256
68a3a8d3147a285c2b76e64cbb0a3bb4803aa35a35ff9fb964512ba0cec68743

SHA512
9ef2f06d78d5722e61ef55ceea2e19c4b12b7c0c0e95097b90ff6d98e5d2208921742fb4c31af816d20366de087775d0eb67de7b9c532f29eff54e43690672a5

Download Submit
memory/3344-55-0x00007FFE22350000-0x00007FFE22E11000-memory.dmp

Filesize
10.8MB

Download
memory/3344-0-0x00007FFE22353000-0x00007FFE22355000-memory.dmp

Filesize
8KB

Download
memory/3344-56-0x00007FFE22353000-0x00007FFE22355000-memory.dmp

Filesize
8KB

Download
memory/3344-57-0x00007FFE22350000-0x00007FFE22E11000-memory.dmp

Filesize
10.8MB

Download
memory/3344-1-0x0000000000CF0000-0x0000000000D02000-memory.dmp

Filesize
72KB

Download
memory/3796-17-0x00007FFE22350000-0x00007FFE22E11000-memory.dmp

Filesize
10.8MB

Download
memory/3796-14-0x00007FFE22350000-0x00007FFE22E11000-memory.dmp

Filesize
10.8MB

Download
memory/3796-13-0x00007FFE22350000-0x00007FFE22E11000-memory.dmp

Filesize
10.8MB

Download
memory/3796-12-0x00007FFE22350000-0x00007FFE22E11000-memory.dmp

Filesize
10.8MB

Download
memory/3796-8-0x00000260B8720000-0x00000260B8742000-memory.dmp

Filesize
136KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads