657dd292929810602b1edd43a3970867639949b66b95e683567baefae8353aa0

General

Target

2024-08-08_7daf0e15401f2cf0cc13592dc63c5b55_ryuk.exe
Size

577KB
MD5

7daf0e15401f2cf0cc13592dc63c5b55
SHA1

aa307d7ec500baf6fea6f7388dd59ab427be12f0
SHA256

657dd292929810602b1edd43a3970867639949b66b95e683567baefae8353aa0
SHA512

485ade2cf26d6309189cfc6215b12d880eb4c1f4485463f2aaceed49e83ea723e2ed98412726ef79799c4ac4ba907fe470e30f49ae26bc13bc70da24c0dee882
SSDEEP

6144:kn2yi4uy3wpb5MyzHPea26rafnxa5igm/RXTG01muPUexRoh4xwigLtjWTQat+1N:knR7uy3y5TvA6G5PL/HoLxlat+OOst

Score

6^/10

discovery persistence

Malware Config

Signatures

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\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\LaunchWUApp = "C:\\AMD\\WU-CCC2\\ccc2_install\\LaunchWLApp.bat"	2024-08-08_7daf0e15401f2cf0cc13592dc63c5b55_ryuk.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3600	powershell.exe
3600	powershell.exe
1540	powershell.exe
1540	powershell.exe
3228	powershell.exe
3228	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	3600	powershell.exe
Token: SeDebugPrivilege	1540	powershell.exe
Token: SeDebugPrivilege	3228	powershell.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 3756 wrote to memory of 4064	3756	2024-08-08_7daf0e15401f2cf0cc13592dc63c5b55_ryuk.exe	83
PID 3756 wrote to memory of 4064	3756	2024-08-08_7daf0e15401f2cf0cc13592dc63c5b55_ryuk.exe	83
PID 4064 wrote to memory of 3600	4064	cmd.exe	85
PID 4064 wrote to memory of 3600	4064	cmd.exe	85
PID 3756 wrote to memory of 2096	3756	2024-08-08_7daf0e15401f2cf0cc13592dc63c5b55_ryuk.exe	88
PID 3756 wrote to memory of 2096	3756	2024-08-08_7daf0e15401f2cf0cc13592dc63c5b55_ryuk.exe	88
PID 3756 wrote to memory of 3568	3756	2024-08-08_7daf0e15401f2cf0cc13592dc63c5b55_ryuk.exe	90
PID 3756 wrote to memory of 3568	3756	2024-08-08_7daf0e15401f2cf0cc13592dc63c5b55_ryuk.exe	90
PID 3568 wrote to memory of 1540	3568	cmd.exe	92
PID 3568 wrote to memory of 1540	3568	cmd.exe	92
PID 3756 wrote to memory of 3776	3756	2024-08-08_7daf0e15401f2cf0cc13592dc63c5b55_ryuk.exe	94
PID 3756 wrote to memory of 3776	3756	2024-08-08_7daf0e15401f2cf0cc13592dc63c5b55_ryuk.exe	94
PID 3756 wrote to memory of 2232	3756	2024-08-08_7daf0e15401f2cf0cc13592dc63c5b55_ryuk.exe	96
PID 3756 wrote to memory of 2232	3756	2024-08-08_7daf0e15401f2cf0cc13592dc63c5b55_ryuk.exe	96
PID 2232 wrote to memory of 3228	2232	cmd.exe	98
PID 2232 wrote to memory of 3228	2232	cmd.exe	98
PID 3756 wrote to memory of 1120	3756	2024-08-08_7daf0e15401f2cf0cc13592dc63c5b55_ryuk.exe	99
PID 3756 wrote to memory of 1120	3756	2024-08-08_7daf0e15401f2cf0cc13592dc63c5b55_ryuk.exe	99
PID 3756 wrote to memory of 4900	3756	2024-08-08_7daf0e15401f2cf0cc13592dc63c5b55_ryuk.exe	101
PID 3756 wrote to memory of 4900	3756	2024-08-08_7daf0e15401f2cf0cc13592dc63c5b55_ryuk.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\2024-08-08_7daf0e15401f2cf0cc13592dc63c5b55_ryuk.exe
"C:\Users\Admin\AppData\Local\Temp\2024-08-08_7daf0e15401f2cf0cc13592dc63c5b55_ryuk.exe"
1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:3756
- C:\Windows\SYSTEM32\cmd.exe
  cmd.exe /C "powershell "Get-AppxPackage -AllUsers "AdvancedMicroDevicesInc-2.59462344778C5*" | Remove-AppxPackage -AllUsers""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4064
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    powershell "Get-AppxPackage -AllUsers "AdvancedMicroDevicesInc-2.59462344778C5*" | Remove-AppxPackage -AllUsers"
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3600
- C:\Windows\SYSTEM32\cmd.exe
  cmd.exe /C ""Get-AppXProvisionedPackage -Online | where PackageName -Like "AdvancedMicroDevicesInc-2.59462344778C5*" | Remove-AppXProvisionedPackage -Online""
  2⤵
  PID:2096
- C:\Windows\SYSTEM32\cmd.exe
  cmd.exe /C "powershell "Get-AppxPackage -AllUsers "AdvancedMicroDevicesInc-2.AMDDisplayEnhance_0a9344xs7nr4m*" | Remove-AppxPackage -AllUsers""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3568
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    powershell "Get-AppxPackage -AllUsers "AdvancedMicroDevicesInc-2.AMDDisplayEnhance_0a9344xs7nr4m*" | Remove-AppxPackage -AllUsers"
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1540
- C:\Windows\SYSTEM32\cmd.exe
  cmd.exe /C ""Get-AppXProvisionedPackage -Online | where PackageName -Like "AdvancedMicroDevicesInc-2.AMDDisplayEnhance_0a9344xs7nr4m*" | Remove-AppXProvisionedPackage -Online""
  2⤵
  PID:3776
- C:\Windows\SYSTEM32\cmd.exe
  cmd.exe /C "powershell "Get-AppxPackage -AllUsers "AdvancedMicroDevicesInc-2.AMDGraphicsProfile_0a9344xs7nr4m*" | Remove-AppxPackage -AllUsers""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2232
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    powershell "Get-AppxPackage -AllUsers "AdvancedMicroDevicesInc-2.AMDGraphicsProfile_0a9344xs7nr4m*" | Remove-AppxPackage -AllUsers"
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3228
- C:\Windows\SYSTEM32\cmd.exe
  cmd.exe /C ""Get-AppXProvisionedPackage -Online | where PackageName -Like "AdvancedMicroDevicesInc-2.AMDGraphicsProfile_0a9344xs7nr4m*" | Remove-AppXProvisionedPackage -Online""
  2⤵
  PID:1120
- C:\Windows\SYSTEM32\schtasks.exe
  schtasks /delete /TN "AMDDVRAnalytics" /F
  2⤵
  PID:4900

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

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

2

T1012

System Information Discovery

1

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
3KB

MD5
958ec9d245aa0e4bd5d05bbdb37475f4

SHA1
80e6d2c6a85922cb83b9fea874320e9c53740bd9

SHA256
a01df48cd7398ad6894bc40d27fb024dcdda87a3315934e5452a2a3e7dfb371d

SHA512
82567b9f898238e38b3b6b3cdb2565be8cac08788e612564c6ac1545f161cd5c545ba833946cc6f0954f38f066a20c9a4922a09f7d37604c71c8f0e7e46a59ec

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

Filesize
1KB

MD5
e1940a586785c9170f03f6487276ed0d

SHA1
0e631c850dd89e7948874a6e32c912ed43dd7df1

SHA256
f09f40f11e825361e2b58b706812399d91cfe53197b9f0404a62eb1e0088dc6f

SHA512
ff7727c5b61dd1af03bc6443092fa60d8e857b4a336d77ee06ec64b5b7622cfff2a9971d0f651db7d2002ca324cb7eb54ab190e6a48d22b92727d718e03a298c

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

Filesize
1KB

MD5
d486c18652cf2131c43fbcaf092cd122

SHA1
53297cfead4e317f7df391e8425bf0c380764e21

SHA256
c4c059feb26f103fd9ae42ebb808039d06fce0f15fec0211fac52a1ce93dfb27

SHA512
30a0e97d7812fcf5397b5b39f833df2a82e8ed0ee8fa13ccd6026e660d236aca112b5b612c0627a444059d2524310669a6d73e252080480440f3d7510d305fa1

Download Submit
C:\Users\Admin\AppData\Local\Temp\WUCNLog.log

Filesize
287B

MD5
a99ed801634710099e1a92c6a1c27cec

SHA1
d4bfe31420e0f833d47b7e5d8d5c71f005abbc59

SHA256
329b5e78b56adc3c27a1a9e6b74c47db1686ada7b6b98945dd7d2f2aff7cb8ac

SHA512
c2baa653eb6a8d9a66957508eb05975ad1f35e292410b9c7dd2e5d43a34c0b7fb9f5b23364403c73c4b81f828df884457c73327155738b098d23b27f9f2d84e7

Download Submit
C:\Users\Admin\AppData\Local\Temp\WUCNLog.log

Filesize
1KB

MD5
af7f3c7c53d541bc34326737b7684763

SHA1
55fac57afa98397f58611bfc243e9ea3bd90ab24

SHA256
47d352170380cddbce932a7a20c0c87eee2b6ce280766775ea75620b540c98eb

SHA512
f4161f09a97915bb50a6c73a344a2b7bd16560c40f87a473794f0950e51118a18ad95cec4d008e4da6cb8087c033040924cd98686a9ccd50340dd73b39f6cee5

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_34anmjcs.40r.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/3600-19-0x00007FFBC2780000-0x00007FFBC3241000-memory.dmp

Filesize
10.8MB

Download
memory/3600-20-0x000001C8F70A0000-0x000001C8F70B6000-memory.dmp

Filesize
88KB

Download
memory/3600-21-0x000001C8F7090000-0x000001C8F709A000-memory.dmp

Filesize
40KB

Download
memory/3600-22-0x000001C8F7360000-0x000001C8F7386000-memory.dmp

Filesize
152KB

Download
memory/3600-25-0x00007FFBC2780000-0x00007FFBC3241000-memory.dmp

Filesize
10.8MB

Download
memory/3600-18-0x00007FFBC2780000-0x00007FFBC3241000-memory.dmp

Filesize
10.8MB

Download
memory/3600-8-0x000001C8F6E10000-0x000001C8F6E32000-memory.dmp

Filesize
136KB

Download
memory/3600-7-0x00007FFBC2783000-0x00007FFBC2785000-memory.dmp

Filesize
8KB

Download
memory/3756-0-0x00007FF7A7E10000-0x00007FF7A7EA4000-memory.dmp

Filesize
592KB

Download
memory/3756-65-0x00007FF7A7E10000-0x00007FF7A7EA4000-memory.dmp

Filesize
592KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads