5178fb0c885be51a83a0c53f56e86564548e65080913940eac96d9562270c299

Resubmissions

07-05-2021 13:00

210507-d762x9qcd6 10

07-05-2021 12:37

210507-zy4zqd3wc6 8

Analysis

max time kernel
118s
max time network
13s
platform
windows7_x64
resource
win7v20210408
submitted
07-05-2021 12:37

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General

Target

hanta_2_0.exe
Size

780KB
MD5

d33013cb6b28255069fcfea0575f49e9
SHA1

fd4a4a0ad4e15d2c6a0d9b8bbe7dcde95bada378
SHA256

5178fb0c885be51a83a0c53f56e86564548e65080913940eac96d9562270c299
SHA512

63aca05c9dcfd89219da86cccd196b15cc6afdc22f64dde189fcea95d8c116fd0194d930568760e39899ee2a4b3893b3868a5df563e2573f7840c2531d416d63

Score

8^/10

evasion persistence ransomware

Malware Config

Signatures

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

Processes:

hanta_2_0.exe

description ioc process

File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\HANTA.exe hanta_2_0.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\HANTA.exe	hanta_2_0.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

hanta_2_0.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\""	hanta_2_0.exe

Sets desktop wallpaper using registry 2 TTPs 1 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

Processes:

hanta_2_0.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"	hanta_2_0.exe

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

3452 1652 WerFault.exe hanta_2_0.exe

pid	pid_target	process	target process
3452	1652	WerFault.exe	hanta_2_0.exe

Modifies Control Panel 2 IoCs

evasion

Processes:

hanta_2_0.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Control Panel\Desktop\WallpaperStyle = "1"	hanta_2_0.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Control Panel\Desktop\TileWallpaper = "0"	hanta_2_0.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

Processes:

hanta_2_0.exeWerFault.exe

pid	process
1652	hanta_2_0.exe
1652	hanta_2_0.exe
1652	hanta_2_0.exe
1652	hanta_2_0.exe
3452	WerFault.exe
3452	WerFault.exe
3452	WerFault.exe
3452	WerFault.exe
3452	WerFault.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

WerFault.exe

pid process

3452 WerFault.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

hanta_2_0.exeWerFault.exe

description pid process

Token: SeDebugPrivilege 1652 hanta_2_0.exe
Token: SeDebugPrivilege 3452 WerFault.exe

pid	process
3452	WerFault.exe

description	pid	process
Token: SeDebugPrivilege	1652	hanta_2_0.exe
Token: SeDebugPrivilege	3452	WerFault.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

hanta_2_0.exe

description	pid	process	target process
PID 1652 wrote to memory of 3452	1652	hanta_2_0.exe	WerFault.exe
PID 1652 wrote to memory of 3452	1652	hanta_2_0.exe	WerFault.exe
PID 1652 wrote to memory of 3452	1652	hanta_2_0.exe	WerFault.exe
PID 1652 wrote to memory of 3452	1652	hanta_2_0.exe	WerFault.exe

C:\Users\Admin\AppData\Local\Temp\hanta_2_0.exe
"C:\Users\Admin\AppData\Local\Temp\hanta_2_0.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 6560
2⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
PID:3452

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Defacement

T1491

Replay Monitor

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Downloads

memory/1652-60-0x00000000000A0000-0x00000000000A1000-memory.dmp

Filesize
4KB

Download
memory/1652-62-0x0000000000440000-0x0000000000441000-memory.dmp

Filesize
4KB

Download
memory/1652-63-0x00000000048B0000-0x0000000004965000-memory.dmp

Filesize
724KB

Download
memory/1652-64-0x0000000004990000-0x0000000004991000-memory.dmp

Filesize
4KB

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

Filesize
4KB

Download
memory/3452-66-0x0000000000000000-mapping.dmp

Download
memory/3452-67-0x0000000001C70000-0x0000000001C71000-memory.dmp

Filesize
4KB

Download