xworm | 746c77a58163dd078211c86687ae3a7d8b3af1cb948983a8f4f7ce2167d22dad

General

Target

BootstrapperNew.exe
Size

3.0MB
MD5

bff87092bbbb8b265f9109351bb705b4
SHA1

f77384b9700f4899eb9b6e973a3f67258b8b38a1
SHA256

746c77a58163dd078211c86687ae3a7d8b3af1cb948983a8f4f7ce2167d22dad
SHA512

04acf2774bc60acfb7506e32925acd33c1f9fffd4e0f903858172ab9c892203489a98874ef441f6cc70053f51bc737d9dd719d0b5f72e9e8f43c40b1d223ec0e
SSDEEP

49152:OQJmPAp/HK6UBdnBwpirpcWBpfk2nQdHQrAVbJ432MuMd2jPEa:1mG/HKBBNfco8qisAw3gMYj

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

127.0.0.1:7000

google-rocks.gl.at.ply.gg:7000

Attributes

Install_directory
%AppData%
install_file
svchost.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/files/0x000a000000023c41-17.dat	family_xworm
behavioral2/memory/3500-26-0x0000000000880000-0x000000000089A000-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
4344	powershell.exe
4728	powershell.exe
964	powershell.exe
2736	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-1-5-21-250031470-1197856012-2659781506-1000\Control Panel\International\Geo\Nation	BootstrapperNew.exe
Key value queried	\REGISTRY\USER\S-1-5-21-250031470-1197856012-2659781506-1000\Control Panel\International\Geo\Nation	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	Solara.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk	Solara.exe

Executes dropped EXE 4 IoCs

pid	Process
4952	Bootstrapper.exe
3500	Solara.exe
1476	svchost.exe
4728	svchost.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-1-5-21-250031470-1197856012-2659781506-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe"	Solara.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
3208	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
4344	powershell.exe
4344	powershell.exe
4728	powershell.exe
4728	powershell.exe
964	powershell.exe
964	powershell.exe
2736	powershell.exe
2736	powershell.exe
3500	Solara.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	3500	Solara.exe
Token: SeDebugPrivilege	4344	powershell.exe
Token: SeDebugPrivilege	4728	powershell.exe
Token: SeDebugPrivilege	964	powershell.exe
Token: SeDebugPrivilege	2736	powershell.exe
Token: SeDebugPrivilege	3500	Solara.exe
Token: SeDebugPrivilege	1476	svchost.exe
Token: SeDebugPrivilege	4728	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3500	Solara.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 4228 wrote to memory of 4952	4228	BootstrapperNew.exe	87
PID 4228 wrote to memory of 4952	4228	BootstrapperNew.exe	87
PID 4228 wrote to memory of 3500	4228	BootstrapperNew.exe	88
PID 4228 wrote to memory of 3500	4228	BootstrapperNew.exe	88
PID 3500 wrote to memory of 4344	3500	Solara.exe	89
PID 3500 wrote to memory of 4344	3500	Solara.exe	89
PID 3500 wrote to memory of 4728	3500	Solara.exe	91
PID 3500 wrote to memory of 4728	3500	Solara.exe	91
PID 3500 wrote to memory of 964	3500	Solara.exe	93
PID 3500 wrote to memory of 964	3500	Solara.exe	93
PID 3500 wrote to memory of 2736	3500	Solara.exe	95
PID 3500 wrote to memory of 2736	3500	Solara.exe	95
PID 3500 wrote to memory of 3208	3500	Solara.exe	100
PID 3500 wrote to memory of 3208	3500	Solara.exe	100

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\BootstrapperNew.exe
"C:\Users\Admin\AppData\Local\Temp\BootstrapperNew.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4228
- C:\Users\Admin\AppData\Local\Temp\Bootstrapper.exe
  "C:\Users\Admin\AppData\Local\Temp\Bootstrapper.exe"
  2⤵
  - Executes dropped EXE
  PID:4952
- C:\Users\Admin\AppData\Local\Temp\Solara.exe
  "C:\Users\Admin\AppData\Local\Temp\Solara.exe"
  2⤵
  - Checks computer location settings
  - Drops startup file
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3500
- - 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\Solara.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4344
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Solara.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4728
- - 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.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:964
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svchost.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2736
- - 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.exe"
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:3208

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1476

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4728

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\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.exe.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
77d622bb1a5b250869a3238b9bc1402b

SHA1
d47f4003c2554b9dfc4c16f22460b331886b191b

SHA256
f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb

SHA512
d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9

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

Filesize
944B

MD5
a2c8179aaa149c0b9791b73ce44c04d1

SHA1
703361b0d43ec7f669304e7c0ffbbfdeb1e484ff

SHA256
c1d30342a40a2b6e7553da30ceb85754d33820f6fbb3bbbed1ceb30d6390de4a

SHA512
2e201dd457d055baad86f68c15bcc7beb48d6dc2ffc10db7f304eb93f697e7b45991cbde857d25da2c9c60c23f3e13df8b5ed5809c1753737a23096e296cc9e3

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

Filesize
944B

MD5
54522d22658e4f8f87ecb947b71b8feb

SHA1
6a6144bdf9c445099f52211b6122a2ecf72b77e9

SHA256
af18fc4864bc2982879aed928c960b6266f372c928f8c9632c5a4eecd64e448a

SHA512
55f2c5a455be20dcb4cb93a29e5389e0422237bdd7ac40112fec6f16a36e5e19df50d25d39a6d5acb2d41a96514c7ecd8631ce8e67c4ff04997282f49d947aba

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

Filesize
2.9MB

MD5
f227cdfd423b3cc03bb69c49babf4da3

SHA1
3db5a97d9b0f2545e7ba97026af6c28512200441

SHA256
cb5d6c1ca0aa6232a2d55e14b20ac4a9945a0bd063c57d60a5ed3ae94160e3e8

SHA512
b10afd03b02a928545c16fad39a6ae46b68b1e1a2477a6990803ce80008e7161fb2ebc9380ba15a1b074bb436aa34bcd6c94a922933d438b1c22489717e1e10e

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

Filesize
76KB

MD5
26b3ebae00dafdc80bd84c31c7f0e553

SHA1
55a47080a93ad6b69069ee3a58d8c2ffbbf20861

SHA256
68ead7f94d34fa9e8eef5016506da5a1d3e2cdb513f02880785b535051a88b52

SHA512
0c99e08108b6e0887d755fb1e3e93e69736a2b3b6636a0c4a372b18feb6a4cb749f46b1a9dac16d993e955c052ca9056efb79b72b4fb9c71b800f48604a26905

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_cp4ucqhf.mu2.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/3500-26-0x0000000000880000-0x000000000089A000-memory.dmp

Filesize
104KB

Download
memory/3500-97-0x00007FFD16D90000-0x00007FFD17851000-memory.dmp

Filesize
10.8MB

Download
memory/3500-96-0x00007FFD16D90000-0x00007FFD17851000-memory.dmp

Filesize
10.8MB

Download
memory/3500-93-0x00007FFD16D90000-0x00007FFD17851000-memory.dmp

Filesize
10.8MB

Download
memory/3500-31-0x00007FFD16D90000-0x00007FFD17851000-memory.dmp

Filesize
10.8MB

Download
memory/4228-0-0x00007FFD16D93000-0x00007FFD16D95000-memory.dmp

Filesize
8KB

Download
memory/4228-1-0x0000000000420000-0x000000000071C000-memory.dmp

Filesize
3.0MB

Download
memory/4344-52-0x00000241C69E0000-0x00000241C6A02000-memory.dmp

Filesize
136KB

Download
memory/4952-29-0x000001E074130000-0x000001E074140000-memory.dmp

Filesize
64KB

Download
memory/4952-33-0x000001E077C50000-0x000001E077C5E000-memory.dmp

Filesize
56KB

Download
memory/4952-37-0x000001E07C4E0000-0x000001E07C4E8000-memory.dmp

Filesize
32KB

Download
memory/4952-41-0x000001E07C520000-0x000001E07C528000-memory.dmp

Filesize
32KB

Download
memory/4952-40-0x000001E077C70000-0x000001E077C7A000-memory.dmp

Filesize
40KB

Download
memory/4952-39-0x000001E077CC0000-0x000001E077CCA000-memory.dmp

Filesize
40KB

Download
memory/4952-36-0x000001E07C4B0000-0x000001E07C4D6000-memory.dmp

Filesize
152KB

Download
memory/4952-32-0x000001E077C80000-0x000001E077CB8000-memory.dmp

Filesize
224KB

Download
memory/4952-35-0x000001E077C60000-0x000001E077C6A000-memory.dmp

Filesize
40KB

Download
memory/4952-38-0x000001E07C4F0000-0x000001E07C506000-memory.dmp

Filesize
88KB

Download
memory/4952-34-0x000001E07B1B0000-0x000001E07B2B0000-memory.dmp

Filesize
1024KB

Download
memory/4952-30-0x000001E077C30000-0x000001E077C38000-memory.dmp

Filesize
32KB

Download
memory/4952-94-0x00007FFD16D90000-0x00007FFD17851000-memory.dmp

Filesize
10.8MB

Download
memory/4952-95-0x00007FFD16D90000-0x00007FFD17851000-memory.dmp

Filesize
10.8MB

Download
memory/4952-28-0x00007FFD16D90000-0x00007FFD17851000-memory.dmp

Filesize
10.8MB

Download
memory/4952-27-0x00007FFD16D90000-0x00007FFD17851000-memory.dmp

Filesize
10.8MB

Download
memory/4952-22-0x000001E0737C0000-0x000001E073AA2000-memory.dmp

Filesize
2.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads