5e11767db92bef1591938a448d1d391202e6c8d8ddf0275dc8d72fd375b950db

General

Target

build_v2.exe
Size

781KB
MD5

ca488b40ff017aa2e5edfb657195b19a
SHA1

8591740a747320a93eef73850a29a109cac17a26
SHA256

5e11767db92bef1591938a448d1d391202e6c8d8ddf0275dc8d72fd375b950db
SHA512

73e99e1da85da472e97b0184a71fbffc39b81dd9daffecd640443413976b147941b79f51b2cc7aa90da68b8ba5a39e5541437c41509ca9280082b5a400c441ca

Score

8^/10

evasion persistence ransomware

Malware Config

Signatures

Disables Task Manager via registry modification
evasion
Drops startup file 1 IoCs

Processes:

build_v2.exe

description ioc process

File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\HANTA.exe build_v2.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\HANTA.exe	build_v2.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

build_v2.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Windows\CurrentVersion\Run\hanta_ransom = "\"C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Start Menu\\Programs\\Startup\\HANTA.exe\""	build_v2.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102

Sets desktop wallpaper using registry 2 TTPs 1 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

Processes:

build_v2.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\wall.jpg"	build_v2.exe

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

3456 1652 WerFault.exe build_v2.exe

pid	pid_target	process	target process
3456	1652	WerFault.exe	build_v2.exe

Modifies Control Panel 2 IoCs

evasion

Processes:

build_v2.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Control Panel\Desktop\WallpaperStyle = "1"	build_v2.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Control Panel\Desktop\TileWallpaper = "0"	build_v2.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

Processes:

build_v2.exeWerFault.exe

pid	process
1652	build_v2.exe
1652	build_v2.exe
1652	build_v2.exe
1652	build_v2.exe
3456	WerFault.exe
3456	WerFault.exe
3456	WerFault.exe
3456	WerFault.exe
3456	WerFault.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

build_v2.exeWerFault.exe

description pid process

Token: SeDebugPrivilege 1652 build_v2.exe
Token: SeDebugPrivilege 3456 WerFault.exe

description	pid	process
Token: SeDebugPrivilege	1652	build_v2.exe
Token: SeDebugPrivilege	3456	WerFault.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

build_v2.exe

description	pid	process	target process
PID 1652 wrote to memory of 3456	1652	build_v2.exe	WerFault.exe
PID 1652 wrote to memory of 3456	1652	build_v2.exe	WerFault.exe
PID 1652 wrote to memory of 3456	1652	build_v2.exe	WerFault.exe
PID 1652 wrote to memory of 3456	1652	build_v2.exe	WerFault.exe

C:\Users\Admin\AppData\Local\Temp\build_v2.exe
"C:\Users\Admin\AppData\Local\Temp\build_v2.exe"
1⤵
- Drops startup file
- Adds Run key to start application
- Sets desktop wallpaper using registry
- Modifies Control Panel
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1652

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1652 -s 8768
2⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3456

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Web Service

1

T1102

Impact

Defacement

1

T1491

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Downloads

memory/1652-60-0x00000000001A0000-0x00000000001A1000-memory.dmp

Filesize
4KB

Download
memory/1652-62-0x00000000004C0000-0x00000000004C1000-memory.dmp

Filesize
4KB

Download
memory/1652-63-0x00000000049B0000-0x0000000004A65000-memory.dmp

Filesize
724KB

Download
memory/1652-65-0x0000000000450000-0x0000000000451000-memory.dmp

Filesize
4KB

Download
memory/1652-64-0x0000000001E90000-0x0000000001E91000-memory.dmp

Filesize
4KB

Download
memory/3456-66-0x0000000000000000-mapping.dmp

Download
memory/3456-67-0x00000000001F0000-0x0000000000250000-memory.dmp

Filesize
384KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads