e607fa069f5e63eacf9c4e23b22b438dcfb3338d41995f5598819dcb59c9fcd0

General

Target

e607fa069f5e63eacf9c4e23b22b438dcfb3338d41995f5598819dcb59c9fcd0.exe
Size

42KB
MD5

f6575c77f70e16b47501ee85f4d17c1a
SHA1

c0ee19fec45dadd3211aa39f7550c77af21ce28d
SHA256

e607fa069f5e63eacf9c4e23b22b438dcfb3338d41995f5598819dcb59c9fcd0
SHA512

dbd5222b9322e20f81666683e8435166c26c09b952f66623b3498c6eb1fc3ac0f4773de1d2691f2b567138077e4358f4536dc6a46f2372112235fa7f5affb292
SSDEEP

768:56gkgs9PuODprg/ovq86Xl4BEBLBJOsT5Y8uXTPcpvM5BMC:5vs9uOS//PnBLWqa5

Score

10^/10

evasion persistence

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 2 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe \"C:\\Windows\\o4321427.exe\""	e607fa069f5e63eacf9c4e23b22b438dcfb3338d41995f5598819dcb59c9fcd0.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit = "C:\\Windows\\system32\\userinit.exe,C:\\Windows\\j6321422.exe"	e607fa069f5e63eacf9c4e23b22b438dcfb3338d41995f5598819dcb59c9fcd0.exe

Modifies visibility of file extensions in Explorer 2 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1158

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\HideFileExt = "1"	e607fa069f5e63eacf9c4e23b22b438dcfb3338d41995f5598819dcb59c9fcd0.exe

Modifies visiblity of hidden/system files in Explorer 2 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1158

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	e607fa069f5e63eacf9c4e23b22b438dcfb3338d41995f5598819dcb59c9fcd0.exe

Adds policy Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run	e607fa069f5e63eacf9c4e23b22b438dcfb3338d41995f5598819dcb59c9fcd0.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\N5118c = "\"C:\\Windows\\_default32142.pif\""	e607fa069f5e63eacf9c4e23b22b438dcfb3338d41995f5598819dcb59c9fcd0.exe
Key created	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\run	e607fa069f5e63eacf9c4e23b22b438dcfb3338d41995f5598819dcb59c9fcd0.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\f1464Adm = "\"C:\\Users\\Admin\\AppData\\Local\\dv692700x\\yesbron.com\""	e607fa069f5e63eacf9c4e23b22b438dcfb3338d41995f5598819dcb59c9fcd0.exe

Disables RegEdit via registry modification 1 IoCs

evasion

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	e607fa069f5e63eacf9c4e23b22b438dcfb3338d41995f5598819dcb59c9fcd0.exe

Checks computer location settings 2 TTPs 1 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-1-5-21-2971393436-602173351-1645505021-1000\Control Panel\International\Geo\Nation	e607fa069f5e63eacf9c4e23b22b438dcfb3338d41995f5598819dcb59c9fcd0.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\f1464Adm = "\"C:\\Windows\\system32\\s4827\\zh59927084y.exe\""	e607fa069f5e63eacf9c4e23b22b438dcfb3338d41995f5598819dcb59c9fcd0.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\N5118c = "\"C:\\Windows\\j6321422.exe\""	e607fa069f5e63eacf9c4e23b22b438dcfb3338d41995f5598819dcb59c9fcd0.exe

Drops file in System32 directory 8 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\s4827	e607fa069f5e63eacf9c4e23b22b438dcfb3338d41995f5598819dcb59c9fcd0.exe
File opened for modification	C:\Windows\SysWOW64\s4827\smss.exe	e607fa069f5e63eacf9c4e23b22b438dcfb3338d41995f5598819dcb59c9fcd0.exe
File created	C:\Windows\SysWOW64\s4827\smss.exe	e607fa069f5e63eacf9c4e23b22b438dcfb3338d41995f5598819dcb59c9fcd0.exe
File opened for modification	C:\Windows\SysWOW64\c_32142k.com	e607fa069f5e63eacf9c4e23b22b438dcfb3338d41995f5598819dcb59c9fcd0.exe
File created	C:\Windows\SysWOW64\c_32142k.com	e607fa069f5e63eacf9c4e23b22b438dcfb3338d41995f5598819dcb59c9fcd0.exe
File opened for modification	C:\Windows\SysWOW64\s4827\zh59927084y.exe	e607fa069f5e63eacf9c4e23b22b438dcfb3338d41995f5598819dcb59c9fcd0.exe
File created	C:\Windows\SysWOW64\s4827\zh59927084y.exe	e607fa069f5e63eacf9c4e23b22b438dcfb3338d41995f5598819dcb59c9fcd0.exe
File opened for modification	C:\Windows\SysWOW64\msvbvm60.dll	e607fa069f5e63eacf9c4e23b22b438dcfb3338d41995f5598819dcb59c9fcd0.exe

Drops file in Windows directory 6 IoCs

description	ioc	Process
File opened for modification	C:\Windows\o4321427.exe	e607fa069f5e63eacf9c4e23b22b438dcfb3338d41995f5598819dcb59c9fcd0.exe
File created	C:\Windows\o4321427.exe	e607fa069f5e63eacf9c4e23b22b438dcfb3338d41995f5598819dcb59c9fcd0.exe
File opened for modification	C:\Windows\_default32142.pif	e607fa069f5e63eacf9c4e23b22b438dcfb3338d41995f5598819dcb59c9fcd0.exe
File created	C:\Windows\_default32142.pif	e607fa069f5e63eacf9c4e23b22b438dcfb3338d41995f5598819dcb59c9fcd0.exe
File opened for modification	C:\Windows\j6321422.exe	e607fa069f5e63eacf9c4e23b22b438dcfb3338d41995f5598819dcb59c9fcd0.exe
File created	C:\Windows\j6321422.exe	e607fa069f5e63eacf9c4e23b22b438dcfb3338d41995f5598819dcb59c9fcd0.exe

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

System Information Discovery
T1082

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	e607fa069f5e63eacf9c4e23b22b438dcfb3338d41995f5598819dcb59c9fcd0.exe

C:\Users\Admin\AppData\Local\Temp\e607fa069f5e63eacf9c4e23b22b438dcfb3338d41995f5598819dcb59c9fcd0.exe
"C:\Users\Admin\AppData\Local\Temp\e607fa069f5e63eacf9c4e23b22b438dcfb3338d41995f5598819dcb59c9fcd0.exe"
1⤵
- Modifies WinLogon for persistence
- Modifies visibility of file extensions in Explorer
- Modifies visiblity of hidden/system files in Explorer
- Adds policy Run key to start application
- Disables RegEdit via registry modification
- Checks computer location settings
- Adds Run key to start application
- Drops file in System32 directory
- Drops file in Windows directory
- Modifies registry class
PID:1356

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Hidden Files and Directories

2

T1158

Registry Run Keys / Startup Folder

Winlogon Helper DLL

Privilege Escalation

Defense Evasion

Hidden Files and Directories

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1356-132-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/1356-133-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads