xworm | cf9db2abbe4f144a6541042bb8464811ef1940f57460d96ac5568774fac8471a

General

Target

solarav3.exe
Size

187KB
MD5

1391c7899d105d29ed63a14a1f04f26f
SHA1

c5cf3200d8463f14d06c927dd4ceb68d98472a9f
SHA256

cf9db2abbe4f144a6541042bb8464811ef1940f57460d96ac5568774fac8471a
SHA512

d5b2be6c57f73f7b1a7a6618082dc630c81a8c60f423df005f264af91647f3cdcec5d120c113dd65e05cdcb948257ede35e77d508e81ff1e69a52e69d5d372fa
SSDEEP

3072:iBw/PNb0sajZr6xkVGmT2vB++bEsO9t0iN2MJtmQ:Cw/Fb0ndr6Y2BbLDM2MJn

Score

10^/10

xworm discovery execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

things-gap.gl.at.ply.gg:63131

Attributes

Install_directory
%AppData%
install_file
installer.exe

Signatures

Detect Xworm Payload 3 IoCs

resource	yara_rule
behavioral2/files/0x000a000000023ca2-15.dat	family_xworm
behavioral2/memory/1504-22-0x0000000000400000-0x0000000000436000-memory.dmp	family_xworm
behavioral2/memory/2228-25-0x0000000000410000-0x0000000000432000-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
2300	powershell.exe
640	powershell.exe
4812	powershell.exe
1196	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-1-5-21-1161330783-2912525651-1278508834-1000\Control Panel\International\Geo\Nation	NvidiaGraphicsDriver (1).exe
Key value queried	\REGISTRY\USER\S-1-5-21-1161330783-2912525651-1278508834-1000\Control Panel\International\Geo\Nation	solarav3.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\installer.lnk	NvidiaGraphicsDriver (1).exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\installer.lnk	NvidiaGraphicsDriver (1).exe

Executes dropped EXE 2 IoCs

pid	Process
4560	Bootstrapper_V3.127 (1).exe
2228	NvidiaGraphicsDriver (1).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-1-5-21-1161330783-2912525651-1278508834-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\installer = "C:\\Users\\Admin\\AppData\\Roaming\\installer.exe"	NvidiaGraphicsDriver (1).exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	solarav3.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Bootstrapper_V3.127 (1).exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
2300	powershell.exe
2300	powershell.exe
2300	powershell.exe
640	powershell.exe
640	powershell.exe
640	powershell.exe
4812	powershell.exe
4812	powershell.exe
4812	powershell.exe
1196	powershell.exe
1196	powershell.exe
1196	powershell.exe
2228	NvidiaGraphicsDriver (1).exe
2228	NvidiaGraphicsDriver (1).exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	2228	NvidiaGraphicsDriver (1).exe
Token: SeDebugPrivilege	2300	powershell.exe
Token: SeDebugPrivilege	640	powershell.exe
Token: SeDebugPrivilege	4812	powershell.exe
Token: SeDebugPrivilege	1196	powershell.exe
Token: SeDebugPrivilege	2228	NvidiaGraphicsDriver (1).exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2228	NvidiaGraphicsDriver (1).exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 1504 wrote to memory of 4560	1504	solarav3.exe	88
PID 1504 wrote to memory of 4560	1504	solarav3.exe	88
PID 1504 wrote to memory of 4560	1504	solarav3.exe	88
PID 1504 wrote to memory of 2228	1504	solarav3.exe	89
PID 1504 wrote to memory of 2228	1504	solarav3.exe	89
PID 2228 wrote to memory of 2300	2228	NvidiaGraphicsDriver (1).exe	93
PID 2228 wrote to memory of 2300	2228	NvidiaGraphicsDriver (1).exe	93
PID 2228 wrote to memory of 640	2228	NvidiaGraphicsDriver (1).exe	96
PID 2228 wrote to memory of 640	2228	NvidiaGraphicsDriver (1).exe	96
PID 2228 wrote to memory of 4812	2228	NvidiaGraphicsDriver (1).exe	98
PID 2228 wrote to memory of 4812	2228	NvidiaGraphicsDriver (1).exe	98
PID 2228 wrote to memory of 1196	2228	NvidiaGraphicsDriver (1).exe	101
PID 2228 wrote to memory of 1196	2228	NvidiaGraphicsDriver (1).exe	101

C:\Users\Admin\AppData\Local\Temp\solarav3.exe
"C:\Users\Admin\AppData\Local\Temp\solarav3.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1504
- C:\Users\Admin\AppData\Local\Temp\Bootstrapper_V3.127 (1).exe
  "C:\Users\Admin\AppData\Local\Temp\Bootstrapper_V3.127 (1).exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:4560
- C:\Users\Admin\AppData\Local\Temp\NvidiaGraphicsDriver (1).exe
  "C:\Users\Admin\AppData\Local\Temp\NvidiaGraphicsDriver (1).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:2228
- - 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\NvidiaGraphicsDriver (1).exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2300
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'NvidiaGraphicsDriver (1).exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:640
- - 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\installer.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4812
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'installer.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1196

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

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

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
eb1ad317bd25b55b2bbdce8a28a74a94

SHA1
98a3978be4d10d62e7411946474579ee5bdc5ea6

SHA256
9e94e7c9ac6134ee30e79498558aa1a5a1ac79a643666c3f8922eed215dd3a98

SHA512
d011f266c0240d84470c0f9577cd9e4927309bd19bb38570ca9704ed8e1d159f9bea982a59d3eefef72ce7a10bd81208b82e88ef57c7af587f7437a89769adc0

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

Filesize
944B

MD5
da5c82b0e070047f7377042d08093ff4

SHA1
89d05987cd60828cca516c5c40c18935c35e8bd3

SHA256
77a94ef8c4258445d538a6006ffadb05afdf888f6f044e1e5466b981a07f16c5

SHA512
7360311a3c97b73dd3f6d7179cd979e0e20d69f380d38292447e17e369087d9dd5acb66cd0cbdd95ac4bfb16e5a1b86825f835a8d45b14ea9812102cff59704b

Download Submit
C:\Users\Admin\AppData\Local\Temp\Bootstrapper_V3.127 (1).exe

Filesize
61KB

MD5
b458115052e651c31a5b09011f2802c5

SHA1
8ca6e2cd7108f5c04591f84d0a6d60762a069087

SHA256
4ccfe9678dc5023c6b39450db5e323e6598d92051974a39e3dceb4dcef1fa2fb

SHA512
cd0f8826fc2c1f538ef50d587af6ad85780bbcccb30a74333381dd416cab0b1b7610b251298dac2af27923dda9963c68509ddc3b7bc009047453a1958beec884

Download Submit
C:\Users\Admin\AppData\Local\Temp\NvidiaGraphicsDriver (1).exe

Filesize
116KB

MD5
74d9dec157cdea6f825e03df6430710f

SHA1
8e88035c092145ed5030975533e88a5d7508bdcf

SHA256
b559aedcc786547c17629c6217198eebb967e03d4c8757487690b05631905f2a

SHA512
4774600e45c4a9892afa672c1d45d012931b96b38c58b3b20416bb216be47a01887907af77ac2c22d485ae76ede943013adffe00fffc82b28c2514c1d720f882

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_gikq3zaz.gqt.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1504-22-0x0000000000400000-0x0000000000436000-memory.dmp

Filesize
216KB

Download
memory/2228-25-0x0000000000410000-0x0000000000432000-memory.dmp

Filesize
136KB

Download
memory/2228-23-0x00007FFC19893000-0x00007FFC19895000-memory.dmp

Filesize
8KB

Download
memory/2228-86-0x0000000000D70000-0x0000000000D80000-memory.dmp

Filesize
64KB

Download
memory/2228-82-0x0000000000D70000-0x0000000000D80000-memory.dmp

Filesize
64KB

Download
memory/2300-40-0x00000214AAA70000-0x00000214AAA92000-memory.dmp

Filesize
136KB

Download
memory/4560-43-0x0000000009A30000-0x0000000009A38000-memory.dmp

Filesize
32KB

Download
memory/4560-27-0x0000000073CC0000-0x0000000074470000-memory.dmp

Filesize
7.7MB

Download
memory/4560-26-0x0000000000A30000-0x0000000000A46000-memory.dmp

Filesize
88KB

Download
memory/4560-24-0x0000000073CCE000-0x0000000073CCF000-memory.dmp

Filesize
4KB

Download
memory/4560-30-0x0000000009C70000-0x0000000009C7E000-memory.dmp

Filesize
56KB

Download
memory/4560-28-0x0000000073CC0000-0x0000000074470000-memory.dmp

Filesize
7.7MB

Download
memory/4560-83-0x0000000073CCE000-0x0000000073CCF000-memory.dmp

Filesize
4KB

Download
memory/4560-84-0x0000000073CC0000-0x0000000074470000-memory.dmp

Filesize
7.7MB

Download
memory/4560-85-0x0000000073CC0000-0x0000000074470000-memory.dmp

Filesize
7.7MB

Download
memory/4560-29-0x0000000009CA0000-0x0000000009CD8000-memory.dmp

Filesize
224KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads