sality | f84cd8ad47e1d607b9965b2505adf658a9ec61142cc51ef37cd703b1ad0eadab

General

Target

virussign.exe
Size

597KB
MD5

e60ddc34bde1a87061dd29b5b4479890
SHA1

ac7e92f99be934dcb0ebe4f611ecc8b7984eed8d
SHA256

f84cd8ad47e1d607b9965b2505adf658a9ec61142cc51ef37cd703b1ad0eadab
SHA512

a1f64c5246b49b5c0c8ec47fa14de9962f85640ab29f0f1de6f19799b01f15e0b0699b11d0837e89833a10760897fbe8b44ea2d03bfaebd03f95fcde226a36a3

Score

10^/10

sality backdoor evasion trojan upx

Malware Config

Extracted

Family

sality

C2

http://89.119.67.154/testo5/

http://kukutrustnet777.info/home.gif

http://kukutrustnet888.info/home.gif

http://kukutrustnet987.info/home.gif

http://www.klkjwre9fqwieluoi.info/

http://kukutrustnet777888.info/

http://klkjwre77638dfqwieuoi888.info/

Signatures

Modifies firewall policy service 2 TTPs 3 IoCs

evasion

Modify Registry

T1112

Modify Existing Service

T1031

Processes:

virussign.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0"	virussign.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DoNotAllowExceptions = "0"	virussign.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "1"	virussign.exe

Sality
Sality is backdoor written in C++, first discovered in 2003.
backdoor sality
UAC bypass 3 TTPs 1 IoCs
evasion trojan

Bypass User Account Control
T1088

Disabling Security Tools
T1089

Modify Registry
T1112

Processes:

virussign.exe

description ioc process

Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" virussign.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	virussign.exe

Windows security bypass 2 TTPs 6 IoCs

evasion trojan

Disabling Security Tools

T1089

Modify Registry

T1112

Processes:

virussign.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	virussign.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UacDisableNotify = "1"	virussign.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusOverride = "1"	virussign.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	virussign.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallDisableNotify = "1"	virussign.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallOverride = "1"	virussign.exe

Disables RegEdit via registry modification 1 IoCs

evasion

Processes:

virussign.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows\CurrentVersion\Policies\system\DisableRegistryTools = "1"	virussign.exe

Disables Task Manager via registry modification
evasion

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
behavioral1/memory/1284-56-0x0000000002200000-0x000000000328E000-memory.dmp	upx
behavioral1/memory/1284-57-0x0000000002200000-0x000000000328E000-memory.dmp	upx

Windows security modification 2 TTPs 7 IoCs

evasion trojan

Disabling Security Tools

T1089

Modify Registry

T1112

Processes:

virussign.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallDisableNotify = "1"	virussign.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallOverride = "1"	virussign.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	virussign.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UacDisableNotify = "1"	virussign.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\Svc	virussign.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusOverride = "1"	virussign.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	virussign.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

virussign.exe

description ioc process

Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" virussign.exe
Drops file in Windows directory 1 IoCs

Processes:

virussign.exe

description ioc process

File opened for modification C:\Windows\SYSTEM.INI virussign.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

virussign.exe

pid process

1284 virussign.exe
1284 virussign.exe
1284 virussign.exe
1284 virussign.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	virussign.exe

description	ioc	process
File opened for modification	C:\Windows\SYSTEM.INI	virussign.exe

pid	process
1284	virussign.exe
1284	virussign.exe
1284	virussign.exe
1284	virussign.exe

Suspicious use of AdjustPrivilegeToken 20 IoCs

Processes:

virussign.exe

description	pid	process
Token: SeDebugPrivilege	1284	virussign.exe
Token: SeDebugPrivilege	1284	virussign.exe
Token: SeDebugPrivilege	1284	virussign.exe
Token: SeDebugPrivilege	1284	virussign.exe
Token: SeDebugPrivilege	1284	virussign.exe
Token: SeDebugPrivilege	1284	virussign.exe
Token: SeDebugPrivilege	1284	virussign.exe
Token: SeDebugPrivilege	1284	virussign.exe
Token: SeDebugPrivilege	1284	virussign.exe
Token: SeDebugPrivilege	1284	virussign.exe
Token: SeDebugPrivilege	1284	virussign.exe
Token: SeDebugPrivilege	1284	virussign.exe
Token: SeDebugPrivilege	1284	virussign.exe
Token: SeDebugPrivilege	1284	virussign.exe
Token: SeDebugPrivilege	1284	virussign.exe
Token: SeDebugPrivilege	1284	virussign.exe
Token: SeDebugPrivilege	1284	virussign.exe
Token: SeDebugPrivilege	1284	virussign.exe
Token: SeDebugPrivilege	1284	virussign.exe
Token: SeDebugPrivilege	1284	virussign.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

virussign.exe

description	pid	process	target process
PID 1284 wrote to memory of 1128	1284	virussign.exe	taskhost.exe
PID 1284 wrote to memory of 1192	1284	virussign.exe	Dwm.exe
PID 1284 wrote to memory of 1272	1284	virussign.exe	Explorer.EXE

System policy modification 1 TTPs 1 IoCs
evasion

Modify Registry
T1112

Processes:

virussign.exe

description ioc process

Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" virussign.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	virussign.exe

C:\Windows\system32\Dwm.exe
"C:\Windows\system32\Dwm.exe"
1⤵
PID:1192

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:1272

C:\Users\Admin\AppData\Local\Temp\virussign.exe
"C:\Users\Admin\AppData\Local\Temp\virussign.exe"
2⤵
- Modifies firewall policy service
- UAC bypass
- Windows security bypass
- Disables RegEdit via registry modification
- Windows security modification
- Checks whether UAC is enabled
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- System policy modification
PID:1284

C:\Windows\system32\taskhost.exe
"taskhost.exe"
1⤵
PID:1128

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Modify Existing Service

1

T1031

Privilege Escalation

Bypass User Account Control

1

T1088

Defense Evasion

Modify Registry

5

T1112

Bypass User Account Control

1

T1088

Disabling Security Tools

3

T1089

Credential Access

Discovery

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

memory/1284-54-0x00000000008B0000-0x000000000094A000-memory.dmp

Filesize
616KB

Download
memory/1284-55-0x0000000075E51000-0x0000000075E53000-memory.dmp

Filesize
8KB

Download
memory/1284-56-0x0000000002200000-0x000000000328E000-memory.dmp

Filesize
16.6MB

Download
memory/1284-57-0x0000000002200000-0x000000000328E000-memory.dmp

Filesize
16.6MB

Download
memory/1284-58-0x0000000000160000-0x0000000000162000-memory.dmp

Filesize
8KB

Download
memory/1284-59-0x00000000008B0000-0x000000000094A000-memory.dmp

Filesize
616KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads