7e7c00740baa58af22ef6f825d86344732464a4e325b5eb6f93f33898de079fa

Analysis

max time kernel
840s
max time network
842s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
22/11/2024, 02:36

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
64bfea1efccb47a049ba2cb592878e5c415cc70f9488dd97291c1356e3d79299.exe
Size 561KB
Sample241122-c3zrraspfs
SHA256 64bfea1efccb47a049ba2cb592878e5c415cc70f9488dd97291c1356e3d79299
MD5 81d39888c40bd377f1d84089e02c6c4f
SHA1 b1eeb812dcbc2b4d871a7e34fa149205df177a22
SHA512 b879c20ee382bdf1c278edfe17241686abeb1b989adf62ca4ee52846febfe7feea51f3b03730aa1feb50f62dc695db3ed1991f27b5d2118f5b02824d883429d7
SSDEEP 6144:wQIFrm2L96ygCkDv9LiUAH7oxytqXoRURYZESxR2GT+5pJBYZ+txYec:wZFiIVnkDv9BvNtSn2GCXKz
MD5 SHA1 SHA512 SSDEEP

Score

9^/10

defense_evasion discovery evasion execution impact persistence ransomware trojan

Malware Config

Signatures

Deletes shadow copies 3 TTPs
Ransomware often targets backup files to inhibit system recovery.
ransomware defense_evasion impact execution

File Deletion
T1070.004

Inhibit System Recovery
T1490

Windows Management Instrumentation
T1047

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\iconisuc = "\"C:\\Windows\\ajenydis.exe\""	explorer.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	64bfea1efccb47a049ba2cb592878e5c415cc70f9488dd97291c1356e3d79299.exe

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
5	ipecho.net

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2568 set thread context of 2360	2568	64bfea1efccb47a049ba2cb592878e5c415cc70f9488dd97291c1356e3d79299.exe	30

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\ajenydis.exe	explorer.exe
File opened for modification	C:\Windows\ajenydis.exe	explorer.exe

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	64bfea1efccb47a049ba2cb592878e5c415cc70f9488dd97291c1356e3d79299.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vssadmin.exe

Interacts with shadow copies 3 TTPs 1 IoCs

Shadow copies are often targeted by ransomware to inhibit system recovery.

ransomware

File Deletion

T1070.004

Inhibit System Recovery

T1490

Direct Volume Access

T1006

pid	Process
2760	vssadmin.exe

Modifies Internet Explorer Phishing Filter 1 TTPs 3 IoCs

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000\Software\Microsoft\Internet Explorer\PhishingFilter\EnabledV8 = "0"	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000\Software\Microsoft\Internet Explorer\PhishingFilter\EnabledV9 = "0"	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000\Software\Microsoft\Internet Explorer\PhishingFilter	explorer.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeBackupPrivilege	2168	vssvc.exe
Token: SeRestorePrivilege	2168	vssvc.exe
Token: SeAuditPrivilege	2168	vssvc.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2568 wrote to memory of 2360	2568	64bfea1efccb47a049ba2cb592878e5c415cc70f9488dd97291c1356e3d79299.exe	30
PID 2568 wrote to memory of 2360	2568	64bfea1efccb47a049ba2cb592878e5c415cc70f9488dd97291c1356e3d79299.exe	30
PID 2568 wrote to memory of 2360	2568	64bfea1efccb47a049ba2cb592878e5c415cc70f9488dd97291c1356e3d79299.exe	30
PID 2568 wrote to memory of 2360	2568	64bfea1efccb47a049ba2cb592878e5c415cc70f9488dd97291c1356e3d79299.exe	30
PID 2568 wrote to memory of 2360	2568	64bfea1efccb47a049ba2cb592878e5c415cc70f9488dd97291c1356e3d79299.exe	30
PID 2360 wrote to memory of 2760	2360	explorer.exe	32
PID 2360 wrote to memory of 2760	2360	explorer.exe	32
PID 2360 wrote to memory of 2760	2360	explorer.exe	32
PID 2360 wrote to memory of 2760	2360	explorer.exe	32

Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
ransomware

C:\Users\Admin\AppData\Local\Temp\64bfea1efccb47a049ba2cb592878e5c415cc70f9488dd97291c1356e3d79299.exe
"C:\Users\Admin\AppData\Local\Temp\64bfea1efccb47a049ba2cb592878e5c415cc70f9488dd97291c1356e3d79299.exe"
1⤵
- Checks whether UAC is enabled
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2568
- C:\Windows\SysWOW64\explorer.exe
  "C:\Windows\system32\explorer.exe"
  2⤵
  - Adds Run key to start application
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Modifies Internet Explorer Phishing Filter
  - Suspicious use of WriteProcessMemory
  PID:2360
- - C:\Windows\SysWOW64\vssadmin.exe
    vssadmin.exe Delete Shadows /All /Quiet
    3⤵
    - System Location Discovery: System Language Discovery
    - Interacts with shadow copies
    PID:2760

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2168

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Windows Management Instrumentation

T1047

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Direct Volume Access

T1006

Indicator Removal

T1070

File Deletion

T1070.004

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Inhibit System Recovery

T1490

Replay Monitor

Loading Replay Monitor...

Downloads

ydadawuz

Path C:\ProgramData\umejakawyjepemiv\ydadawuz
Size 561KB
SHA256 a0888bb639647207b582e5f4d586c8ee69d5981d1f89fa8fd031062b9ad50408
MD5 6490da754680dd8308b4fa4558a9c37e
SHA1 0561c9ea9d1998054c092b3a940473bc104e3634
SHA512 89c076a8d0b3fb1e2ad69acd86da0ade853a3448ccfe2f7755d6dd4d7d02bb4c67fda3440807457a76e3ba264e31413f3c54763e5a26378b58740db5fbe4a371
SSDEEP 12288:IBolY2rrn3tUXUMX+kxyoNWkNuEfMev2rcjJlQeJmHUM7d:IuCCrnKUudyoNWkNXDuUXQeJmHUM7d
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/2360-4-0x00000000000E0000-0x0000000000153000-memory.dmp

Download

memory/2360-5-0x00000000000E0000-0x0000000000153000-memory.dmp

Download

memory/2360-7-0x00000000000E0000-0x0000000000153000-memory.dmp

Download

memory/2360-14-0x00000000000E0000-0x0000000000153000-memory.dmp

Download

memory/2360-19-0x00000000000E0000-0x0000000000153000-memory.dmp

Download

memory/2360-20-0x00000000000E0000-0x0000000000153000-memory.dmp

Download

memory/2360-25-0x00000000000E0000-0x0000000000153000-memory.dmp

Download

memory/2568-0-0x00000000002D0000-0x0000000000324000-memory.dmp

Download

memory/2568-1-0x0000000000400000-0x0000000000490000-memory.dmp

Download

memory/2568-9-0x00000000002D0000-0x0000000000324000-memory.dmp

Download

memory/2568-8-0x0000000000400000-0x0000000000490000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads