ryuk | b6a77965f94dfc6f0ed0a3465e8d17e998328a9659ef860fbe2396bb0014f8a2

General

Target

b6a77965f94dfc6f0ed0a3465e8d17e998328a9659ef860fbe2396bb0014f8a2.exe
Size

196KB
MD5

35fb90e465df48871ee78df492fe22de
SHA1

ddfba2e525968f6aedf050613f32b124b13f776a
SHA256

b6a77965f94dfc6f0ed0a3465e8d17e998328a9659ef860fbe2396bb0014f8a2
SHA512

60511d000df87164627fb6053049e82be0833e60a8b8a7ae30e93084e4293e250f1a7b2a4eaf3d875408a304e845ae548ff2cd68d6f604090cdc5be3d168d5f7

Score

10^/10

ryuk discovery persistence ransomware

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\Temp\RyukReadMe.html

Family

ryuk

Ransom Note

<html><body><p style="font-weight:bold;font-size:125%;top:0;left:0;"> [email protected] <br> </p><p style="position:absolute;bottom:0;right:1%;font-weight:bold;font-size:170%">balance of shadow universe</p><div style="font-size: 550%;font-weight:bold;width:50%;height:50%;overflow:auto;margin:auto;position:absolute;top:35%;left:40%;">Ryuk</div></body></html��

Emails

[email protected]

Extracted

Path

C:\Users\Admin\AppData\Local\Temp\RyukReadMe.html

Family

ryuk

Ransom Note

[email protected] balance of shadow universe Ryuk

Emails

[email protected]

Signatures

Ryuk
Ransomware distributed via existing botnets, often Trickbot or Emotet.
ransomware ryuk
Executes dropped EXE 1 IoCs

Processes:

yeFcpTq.exe

pid process

2368 yeFcpTq.exe

pid	process
2368	yeFcpTq.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

Processes:

b6a77965f94dfc6f0ed0a3465e8d17e998328a9659ef860fbe2396bb0014f8a2.exeyeFcpTq.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\Control Panel\International\Geo\Nation	b6a77965f94dfc6f0ed0a3465e8d17e998328a9659ef860fbe2396bb0014f8a2.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\Control Panel\International\Geo\Nation	yeFcpTq.exe

Modifies file permissions 1 TTPs 4 IoCs
discovery

File Permissions Modification
T1222

Processes:

icacls.exeicacls.exeicacls.exeicacls.exe

pid process

988 icacls.exe
3752 icacls.exe
1440 icacls.exe
4388 icacls.exe

pid	process
988	icacls.exe
3752	icacls.exe
1440	icacls.exe
4388	icacls.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

reg.exereg.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svchos = "C:\\Users\\Admin\\AppData\\Local\\Temp\\b6a77965f94dfc6f0ed0a3465e8d17e998328a9659ef860fbe2396bb0014f8a2.exe"	reg.exe
Key created	\REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run	reg.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svchos = "C:\\Users\\Admin\\AppData\\Local\\Temp\\yeFcpTq.exe"	reg.exe
Key created	\REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run	reg.exe

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

System Information Discovery
T1082
Runs net.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

Processes:

b6a77965f94dfc6f0ed0a3465e8d17e998328a9659ef860fbe2396bb0014f8a2.exeyeFcpTq.exe

pid	process
1332	b6a77965f94dfc6f0ed0a3465e8d17e998328a9659ef860fbe2396bb0014f8a2.exe
1332	b6a77965f94dfc6f0ed0a3465e8d17e998328a9659ef860fbe2396bb0014f8a2.exe
1332	b6a77965f94dfc6f0ed0a3465e8d17e998328a9659ef860fbe2396bb0014f8a2.exe
1332	b6a77965f94dfc6f0ed0a3465e8d17e998328a9659ef860fbe2396bb0014f8a2.exe
2368	yeFcpTq.exe
2368	yeFcpTq.exe
1332	b6a77965f94dfc6f0ed0a3465e8d17e998328a9659ef860fbe2396bb0014f8a2.exe
1332	b6a77965f94dfc6f0ed0a3465e8d17e998328a9659ef860fbe2396bb0014f8a2.exe
1332	b6a77965f94dfc6f0ed0a3465e8d17e998328a9659ef860fbe2396bb0014f8a2.exe
1332	b6a77965f94dfc6f0ed0a3465e8d17e998328a9659ef860fbe2396bb0014f8a2.exe
1332	b6a77965f94dfc6f0ed0a3465e8d17e998328a9659ef860fbe2396bb0014f8a2.exe
1332	b6a77965f94dfc6f0ed0a3465e8d17e998328a9659ef860fbe2396bb0014f8a2.exe
1332	b6a77965f94dfc6f0ed0a3465e8d17e998328a9659ef860fbe2396bb0014f8a2.exe
1332	b6a77965f94dfc6f0ed0a3465e8d17e998328a9659ef860fbe2396bb0014f8a2.exe

Suspicious use of AdjustPrivilegeToken 45 IoCs

Processes:

b6a77965f94dfc6f0ed0a3465e8d17e998328a9659ef860fbe2396bb0014f8a2.exeyeFcpTq.exeWMIC.exeWMIC.exe

description	pid	process
Token: SeDebugPrivilege	1332	b6a77965f94dfc6f0ed0a3465e8d17e998328a9659ef860fbe2396bb0014f8a2.exe
Token: SeBackupPrivilege	2368	yeFcpTq.exe
Token: SeBackupPrivilege	1332	b6a77965f94dfc6f0ed0a3465e8d17e998328a9659ef860fbe2396bb0014f8a2.exe
Token: SeIncreaseQuotaPrivilege	1656	WMIC.exe
Token: SeSecurityPrivilege	1656	WMIC.exe
Token: SeTakeOwnershipPrivilege	1656	WMIC.exe
Token: SeLoadDriverPrivilege	1656	WMIC.exe
Token: SeSystemProfilePrivilege	1656	WMIC.exe
Token: SeSystemtimePrivilege	1656	WMIC.exe
Token: SeProfSingleProcessPrivilege	1656	WMIC.exe
Token: SeIncBasePriorityPrivilege	1656	WMIC.exe
Token: SeCreatePagefilePrivilege	1656	WMIC.exe
Token: SeBackupPrivilege	1656	WMIC.exe
Token: SeRestorePrivilege	1656	WMIC.exe
Token: SeShutdownPrivilege	1656	WMIC.exe
Token: SeDebugPrivilege	1656	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1656	WMIC.exe
Token: SeRemoteShutdownPrivilege	1656	WMIC.exe
Token: SeUndockPrivilege	1656	WMIC.exe
Token: SeManageVolumePrivilege	1656	WMIC.exe
Token: 33	1656	WMIC.exe
Token: 34	1656	WMIC.exe
Token: 35	1656	WMIC.exe
Token: 36	1656	WMIC.exe
Token: SeIncreaseQuotaPrivilege	1352	WMIC.exe
Token: SeSecurityPrivilege	1352	WMIC.exe
Token: SeTakeOwnershipPrivilege	1352	WMIC.exe
Token: SeLoadDriverPrivilege	1352	WMIC.exe
Token: SeSystemProfilePrivilege	1352	WMIC.exe
Token: SeSystemtimePrivilege	1352	WMIC.exe
Token: SeProfSingleProcessPrivilege	1352	WMIC.exe
Token: SeIncBasePriorityPrivilege	1352	WMIC.exe
Token: SeCreatePagefilePrivilege	1352	WMIC.exe
Token: SeBackupPrivilege	1352	WMIC.exe
Token: SeRestorePrivilege	1352	WMIC.exe
Token: SeShutdownPrivilege	1352	WMIC.exe
Token: SeDebugPrivilege	1352	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1352	WMIC.exe
Token: SeRemoteShutdownPrivilege	1352	WMIC.exe
Token: SeUndockPrivilege	1352	WMIC.exe
Token: SeManageVolumePrivilege	1352	WMIC.exe
Token: 33	1352	WMIC.exe
Token: 34	1352	WMIC.exe
Token: 35	1352	WMIC.exe
Token: 36	1352	WMIC.exe

Suspicious use of WriteProcessMemory 64 IoCs

Processes:

b6a77965f94dfc6f0ed0a3465e8d17e998328a9659ef860fbe2396bb0014f8a2.exenet.exenet.exeyeFcpTq.exenet.exe

description	pid	process	target process
PID 1332 wrote to memory of 2368	1332	b6a77965f94dfc6f0ed0a3465e8d17e998328a9659ef860fbe2396bb0014f8a2.exe	yeFcpTq.exe
PID 1332 wrote to memory of 2368	1332	b6a77965f94dfc6f0ed0a3465e8d17e998328a9659ef860fbe2396bb0014f8a2.exe	yeFcpTq.exe
PID 1332 wrote to memory of 2368	1332	b6a77965f94dfc6f0ed0a3465e8d17e998328a9659ef860fbe2396bb0014f8a2.exe	yeFcpTq.exe
PID 1332 wrote to memory of 2280	1332	b6a77965f94dfc6f0ed0a3465e8d17e998328a9659ef860fbe2396bb0014f8a2.exe	sihost.exe
PID 1332 wrote to memory of 2860	1332	b6a77965f94dfc6f0ed0a3465e8d17e998328a9659ef860fbe2396bb0014f8a2.exe	net.exe
PID 1332 wrote to memory of 2860	1332	b6a77965f94dfc6f0ed0a3465e8d17e998328a9659ef860fbe2396bb0014f8a2.exe	net.exe
PID 1332 wrote to memory of 2860	1332	b6a77965f94dfc6f0ed0a3465e8d17e998328a9659ef860fbe2396bb0014f8a2.exe	net.exe
PID 1332 wrote to memory of 3144	1332	b6a77965f94dfc6f0ed0a3465e8d17e998328a9659ef860fbe2396bb0014f8a2.exe	net.exe
PID 1332 wrote to memory of 3144	1332	b6a77965f94dfc6f0ed0a3465e8d17e998328a9659ef860fbe2396bb0014f8a2.exe	net.exe
PID 1332 wrote to memory of 3144	1332	b6a77965f94dfc6f0ed0a3465e8d17e998328a9659ef860fbe2396bb0014f8a2.exe	net.exe
PID 1332 wrote to memory of 2312	1332	b6a77965f94dfc6f0ed0a3465e8d17e998328a9659ef860fbe2396bb0014f8a2.exe	svchost.exe
PID 1332 wrote to memory of 2432	1332	b6a77965f94dfc6f0ed0a3465e8d17e998328a9659ef860fbe2396bb0014f8a2.exe	taskhostw.exe
PID 1332 wrote to memory of 744	1332	b6a77965f94dfc6f0ed0a3465e8d17e998328a9659ef860fbe2396bb0014f8a2.exe	svchost.exe
PID 1332 wrote to memory of 3252	1332	b6a77965f94dfc6f0ed0a3465e8d17e998328a9659ef860fbe2396bb0014f8a2.exe	DllHost.exe
PID 1332 wrote to memory of 3348	1332	b6a77965f94dfc6f0ed0a3465e8d17e998328a9659ef860fbe2396bb0014f8a2.exe	StartMenuExperienceHost.exe
PID 1332 wrote to memory of 3424	1332	b6a77965f94dfc6f0ed0a3465e8d17e998328a9659ef860fbe2396bb0014f8a2.exe	RuntimeBroker.exe
PID 1332 wrote to memory of 3516	1332	b6a77965f94dfc6f0ed0a3465e8d17e998328a9659ef860fbe2396bb0014f8a2.exe	SearchApp.exe
PID 1332 wrote to memory of 3848	1332	b6a77965f94dfc6f0ed0a3465e8d17e998328a9659ef860fbe2396bb0014f8a2.exe	RuntimeBroker.exe
PID 1332 wrote to memory of 4052	1332	b6a77965f94dfc6f0ed0a3465e8d17e998328a9659ef860fbe2396bb0014f8a2.exe	RuntimeBroker.exe
PID 1332 wrote to memory of 1752	1332	b6a77965f94dfc6f0ed0a3465e8d17e998328a9659ef860fbe2396bb0014f8a2.exe	backgroundTaskHost.exe
PID 1332 wrote to memory of 2208	1332	b6a77965f94dfc6f0ed0a3465e8d17e998328a9659ef860fbe2396bb0014f8a2.exe	RuntimeBroker.exe
PID 2860 wrote to memory of 3632	2860	net.exe	net1.exe
PID 2860 wrote to memory of 3632	2860	net.exe	net1.exe
PID 2860 wrote to memory of 3632	2860	net.exe	net1.exe
PID 3144 wrote to memory of 100	3144	net.exe	net1.exe
PID 3144 wrote to memory of 100	3144	net.exe	net1.exe
PID 3144 wrote to memory of 100	3144	net.exe	net1.exe
PID 2368 wrote to memory of 3752	2368	yeFcpTq.exe	icacls.exe
PID 2368 wrote to memory of 3752	2368	yeFcpTq.exe	icacls.exe
PID 2368 wrote to memory of 3752	2368	yeFcpTq.exe	icacls.exe
PID 1332 wrote to memory of 988	1332	b6a77965f94dfc6f0ed0a3465e8d17e998328a9659ef860fbe2396bb0014f8a2.exe	icacls.exe
PID 1332 wrote to memory of 988	1332	b6a77965f94dfc6f0ed0a3465e8d17e998328a9659ef860fbe2396bb0014f8a2.exe	icacls.exe
PID 1332 wrote to memory of 988	1332	b6a77965f94dfc6f0ed0a3465e8d17e998328a9659ef860fbe2396bb0014f8a2.exe	icacls.exe
PID 2368 wrote to memory of 4388	2368	yeFcpTq.exe	icacls.exe
PID 2368 wrote to memory of 4388	2368	yeFcpTq.exe	icacls.exe
PID 2368 wrote to memory of 4388	2368	yeFcpTq.exe	icacls.exe
PID 1332 wrote to memory of 1440	1332	b6a77965f94dfc6f0ed0a3465e8d17e998328a9659ef860fbe2396bb0014f8a2.exe	icacls.exe
PID 1332 wrote to memory of 1440	1332	b6a77965f94dfc6f0ed0a3465e8d17e998328a9659ef860fbe2396bb0014f8a2.exe	icacls.exe
PID 1332 wrote to memory of 1440	1332	b6a77965f94dfc6f0ed0a3465e8d17e998328a9659ef860fbe2396bb0014f8a2.exe	icacls.exe
PID 2368 wrote to memory of 4592	2368	yeFcpTq.exe	cmd.exe
PID 2368 wrote to memory of 4592	2368	yeFcpTq.exe	cmd.exe
PID 2368 wrote to memory of 4592	2368	yeFcpTq.exe	cmd.exe
PID 1332 wrote to memory of 3112	1332	b6a77965f94dfc6f0ed0a3465e8d17e998328a9659ef860fbe2396bb0014f8a2.exe	cmd.exe
PID 1332 wrote to memory of 3112	1332	b6a77965f94dfc6f0ed0a3465e8d17e998328a9659ef860fbe2396bb0014f8a2.exe	cmd.exe
PID 1332 wrote to memory of 3112	1332	b6a77965f94dfc6f0ed0a3465e8d17e998328a9659ef860fbe2396bb0014f8a2.exe	cmd.exe
PID 2368 wrote to memory of 4552	2368	yeFcpTq.exe	net.exe
PID 2368 wrote to memory of 4552	2368	yeFcpTq.exe	net.exe
PID 2368 wrote to memory of 4552	2368	yeFcpTq.exe	net.exe
PID 2368 wrote to memory of 944	2368	yeFcpTq.exe	net.exe
PID 2368 wrote to memory of 944	2368	yeFcpTq.exe	net.exe
PID 2368 wrote to memory of 944	2368	yeFcpTq.exe	net.exe
PID 1332 wrote to memory of 2052	1332	b6a77965f94dfc6f0ed0a3465e8d17e998328a9659ef860fbe2396bb0014f8a2.exe	net.exe
PID 1332 wrote to memory of 2052	1332	b6a77965f94dfc6f0ed0a3465e8d17e998328a9659ef860fbe2396bb0014f8a2.exe	net.exe
PID 1332 wrote to memory of 2052	1332	b6a77965f94dfc6f0ed0a3465e8d17e998328a9659ef860fbe2396bb0014f8a2.exe	net.exe
PID 1332 wrote to memory of 4712	1332	b6a77965f94dfc6f0ed0a3465e8d17e998328a9659ef860fbe2396bb0014f8a2.exe	cmd.exe
PID 1332 wrote to memory of 4712	1332	b6a77965f94dfc6f0ed0a3465e8d17e998328a9659ef860fbe2396bb0014f8a2.exe	cmd.exe
PID 1332 wrote to memory of 4712	1332	b6a77965f94dfc6f0ed0a3465e8d17e998328a9659ef860fbe2396bb0014f8a2.exe	cmd.exe
PID 1332 wrote to memory of 4988	1332	b6a77965f94dfc6f0ed0a3465e8d17e998328a9659ef860fbe2396bb0014f8a2.exe	net.exe
PID 1332 wrote to memory of 4988	1332	b6a77965f94dfc6f0ed0a3465e8d17e998328a9659ef860fbe2396bb0014f8a2.exe	net.exe
PID 1332 wrote to memory of 4988	1332	b6a77965f94dfc6f0ed0a3465e8d17e998328a9659ef860fbe2396bb0014f8a2.exe	net.exe
PID 944 wrote to memory of 896	944	net.exe	net1.exe
PID 944 wrote to memory of 896	944	net.exe	net1.exe
PID 944 wrote to memory of 896	944	net.exe	net1.exe
PID 1332 wrote to memory of 428	1332	b6a77965f94dfc6f0ed0a3465e8d17e998328a9659ef860fbe2396bb0014f8a2.exe	net.exe

C:\Windows\system32\taskhostw.exe
taskhostw.exe {222A245B-E637-4AE9-A93F-A59CA119A75E}
1⤵
PID:2432

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k UnistackSvcGroup -s CDPUserSvc
1⤵
PID:2312

C:\Windows\system32\sihost.exe
sihost.exe
1⤵
PID:2280

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k ClipboardSvcGroup -p -s cbdhsvc
1⤵
PID:744

C:\Windows\system32\DllHost.exe
C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
1⤵
PID:3252

C:\Windows\System32\RuntimeBroker.exe
C:\Windows\System32\RuntimeBroker.exe -Embedding
1⤵
PID:3424

C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
"C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
1⤵
PID:3348

C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
"C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
1⤵
PID:3516

C:\Windows\System32\RuntimeBroker.exe
C:\Windows\System32\RuntimeBroker.exe -Embedding
1⤵
PID:3848

C:\Windows\System32\RuntimeBroker.exe
C:\Windows\System32\RuntimeBroker.exe -Embedding
1⤵
PID:4052

C:\Windows\system32\backgroundTaskHost.exe
"C:\Windows\system32\backgroundTaskHost.exe" -ServerName:App.AppXmtcan0h2tfbfy7k9kn8hbxb6dmzz1zh0.mca
1⤵
PID:1752

C:\Windows\System32\RuntimeBroker.exe
C:\Windows\System32\RuntimeBroker.exe -Embedding
1⤵
PID:2208

C:\Users\Admin\AppData\Local\Temp\b6a77965f94dfc6f0ed0a3465e8d17e998328a9659ef860fbe2396bb0014f8a2.exe
"C:\Users\Admin\AppData\Local\Temp\b6a77965f94dfc6f0ed0a3465e8d17e998328a9659ef860fbe2396bb0014f8a2.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1332

C:\Users\Admin\AppData\Local\Temp\yeFcpTq.exe
"C:\Users\Admin\AppData\Local\Temp\yeFcpTq.exe" 8 LAN
2⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2368

C:\Windows\SysWOW64\icacls.exe
icacls "C:\*" /grant Everyone:F /T /C /Q
3⤵
- Modifies file permissions
PID:3752

C:\Windows\SysWOW64\icacls.exe
icacls "D:\*" /grant Everyone:F /T /C /Q
3⤵
- Modifies file permissions
PID:4388

C:\Windows\SysWOW64\cmd.exe
cmd /c "WMIC.exe shadowcopy delet"
3⤵
PID:4592

C:\Windows\SysWOW64\Wbem\WMIC.exe
WMIC.exe shadowcopy delet
4⤵
- Suspicious use of AdjustPrivilegeToken
PID:1656

C:\Windows\SysWOW64\net.exe
"C:\Windows\System32\net.exe" stop "audioendpointbuilder" /y
3⤵
PID:4552

C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 stop "audioendpointbuilder" /y
4⤵
PID:2152

C:\Windows\SysWOW64\net.exe
"C:\Windows\System32\net.exe" stop "samss" /y
3⤵
- Suspicious use of WriteProcessMemory
PID:944

C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 stop "samss" /y
4⤵
PID:896

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C REG ADD "HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "svchos" /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\yeFcpTq.exe" /f /reg:64
3⤵
PID:4080

C:\Windows\SysWOW64\reg.exe
REG ADD "HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "svchos" /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\yeFcpTq.exe" /f /reg:64
4⤵
- Adds Run key to start application
PID:4744

C:\Windows\SysWOW64\net.exe
"C:\Windows\System32\net.exe" stop "audioendpointbuilder" /y
2⤵
- Suspicious use of WriteProcessMemory
PID:2860

C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 stop "audioendpointbuilder" /y
3⤵
PID:3632

C:\Windows\SysWOW64\net.exe
"C:\Windows\System32\net.exe" stop "samss" /y
2⤵
- Suspicious use of WriteProcessMemory
PID:3144

C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 stop "samss" /y
3⤵
PID:100

C:\Windows\SysWOW64\icacls.exe
icacls "C:\*" /grant Everyone:F /T /C /Q
2⤵
- Modifies file permissions
PID:988

C:\Windows\SysWOW64\icacls.exe
icacls "D:\*" /grant Everyone:F /T /C /Q
2⤵
- Modifies file permissions
PID:1440

C:\Windows\SysWOW64\cmd.exe
cmd /c "WMIC.exe shadowcopy delet"
2⤵
PID:3112

C:\Windows\SysWOW64\Wbem\WMIC.exe
WMIC.exe shadowcopy delet
3⤵
- Suspicious use of AdjustPrivilegeToken
PID:1352

C:\Windows\SysWOW64\net.exe
"C:\Windows\System32\net.exe" stop "audioendpointbuilder" /y
2⤵
PID:2052

C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 stop "audioendpointbuilder" /y
3⤵
PID:712

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C REG ADD "HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "svchos" /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\b6a77965f94dfc6f0ed0a3465e8d17e998328a9659ef860fbe2396bb0014f8a2.exe" /f /reg:64
2⤵
PID:4712

C:\Windows\SysWOW64\reg.exe
REG ADD "HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "svchos" /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\b6a77965f94dfc6f0ed0a3465e8d17e998328a9659ef860fbe2396bb0014f8a2.exe" /f /reg:64
3⤵
- Adds Run key to start application
PID:2708

C:\Windows\SysWOW64\net.exe
"C:\Windows\System32\net.exe" stop "samss" /y
2⤵
PID:4988

C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 stop "samss" /y
3⤵
PID:660

C:\Windows\SysWOW64\net.exe
"C:\Windows\System32\net.exe" stop "audioendpointbuilder" /y
2⤵
PID:428

C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 stop "audioendpointbuilder" /y
3⤵
PID:1804

C:\Windows\SysWOW64\net.exe
"C:\Windows\System32\net.exe" stop "samss" /y
2⤵
PID:2896

C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 stop "samss" /y
3⤵
PID:1444

C:\Windows\SysWOW64\net.exe
"C:\Windows\System32\net.exe" stop "audioendpointbuilder" /y
2⤵
PID:10632

C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 stop "audioendpointbuilder" /y
3⤵
PID:10684

C:\Windows\SysWOW64\net.exe
"C:\Windows\System32\net.exe" stop "samss" /y
2⤵
PID:10704

C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 stop "samss" /y
3⤵
PID:10788

C:\Windows\SysWOW64\net.exe
"C:\Windows\System32\net.exe" stop "audioendpointbuilder" /y
2⤵
PID:10752

C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 stop "audioendpointbuilder" /y
3⤵
PID:3076

C:\Windows\SysWOW64\net.exe
"C:\Windows\System32\net.exe" stop "samss" /y
2⤵
PID:10832

C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 stop "samss" /y
3⤵
PID:10880

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

File Permissions Modification

1

T1222

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\ProgramData\Microsoft\Crypto\RSA\MachineKeys\08e575673cce10c72090304839888e02_e269d2c1-0edf-4391-ac7b-818b8e88b04f
MD5
93a5aadeec082ffc1bca5aa27af70f52

SHA1
47a92aee3ea4d1c1954ed4da9f86dd79d9277d31

SHA256
a1a21799e98f97f271657ce656076f33dcb020d9370f1f2671d783cafd230294

SHA512
df388c8d83e779e006d6311b2046fcf9259ec33d379fc0e2c6a4b6b90418f587a12c5c23acd488413a02568ca2d3effe04608ec7c791925c7ed53dc71093ca45

Download Submit
C:\RyukReadMe.html
MD5
c41739852bd55bc696f12de5b67f888b

SHA1
bccf16bbd0a27888c11e4db5c0dc0da409935739

SHA256
ef2073974f87e4972ab1c6daaefe3e881fc201c1cc4eed4dc037259454e8e5d9

SHA512
f9141c917641a77ea41bf6c52a4301d807fbeb0f511213b6dbc8ef26fc9b2d1d28d92c792c72155e3b38035beed6eee989178ff7cff76975264c08aec0e35187

Download Submit
C:\Users\Admin\AppData\Local\Temp\RyukReadMe.html
MD5
c41739852bd55bc696f12de5b67f888b

SHA1
bccf16bbd0a27888c11e4db5c0dc0da409935739

SHA256
ef2073974f87e4972ab1c6daaefe3e881fc201c1cc4eed4dc037259454e8e5d9

SHA512
f9141c917641a77ea41bf6c52a4301d807fbeb0f511213b6dbc8ef26fc9b2d1d28d92c792c72155e3b38035beed6eee989178ff7cff76975264c08aec0e35187

Download Submit
C:\Users\Admin\AppData\Local\Temp\yeFcpTq.exe
MD5
35fb90e465df48871ee78df492fe22de

SHA1
ddfba2e525968f6aedf050613f32b124b13f776a

SHA256
b6a77965f94dfc6f0ed0a3465e8d17e998328a9659ef860fbe2396bb0014f8a2

SHA512
60511d000df87164627fb6053049e82be0833e60a8b8a7ae30e93084e4293e250f1a7b2a4eaf3d875408a304e845ae548ff2cd68d6f604090cdc5be3d168d5f7

Download Submit
C:\Users\Admin\AppData\Local\Temp\yeFcpTq.exe
MD5
35fb90e465df48871ee78df492fe22de

SHA1
ddfba2e525968f6aedf050613f32b124b13f776a

SHA256
b6a77965f94dfc6f0ed0a3465e8d17e998328a9659ef860fbe2396bb0014f8a2

SHA512
60511d000df87164627fb6053049e82be0833e60a8b8a7ae30e93084e4293e250f1a7b2a4eaf3d875408a304e845ae548ff2cd68d6f604090cdc5be3d168d5f7

Download Submit
C:\Users\RyukReadMe.html
MD5
c41739852bd55bc696f12de5b67f888b

SHA1
bccf16bbd0a27888c11e4db5c0dc0da409935739

SHA256
ef2073974f87e4972ab1c6daaefe3e881fc201c1cc4eed4dc037259454e8e5d9

SHA512
f9141c917641a77ea41bf6c52a4301d807fbeb0f511213b6dbc8ef26fc9b2d1d28d92c792c72155e3b38035beed6eee989178ff7cff76975264c08aec0e35187

Download Submit

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads