526b432752bac2edc49ee4a3cc2428f5d7249fa3afe66deba5d23e12e4bce68c

Analysis

max time kernel
148s
max time network
152s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
19-11-2024 23:52

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General

Target

Rack/e58768c3df867270aa9e3177709415005914b39d272623e8d296106ad5cf125c.exe
Size

773KB
MD5

48fc525c80aea2a073b4e16f4a98646b
SHA1

aac1555af284530a0072a0a4caa8e55231f35427
SHA256

e58768c3df867270aa9e3177709415005914b39d272623e8d296106ad5cf125c
SHA512

8baecb449ecb48431cd5cfaf4d3b5b22b4e4f13e4b0d98fef74fa8e3149c6c737214c23b21ff69290ac5bdc90f0905e221c9fe43d32b3cf378e057e807c8bd71
SSDEEP

24576:DI0sDNiUfiPgI91k4geYZF2HSoHvwA6PfRAcOsA0:Dq5iUU5nSeYiHSoH94fK0

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

Processes:

explorer.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\olyzokyh = "\"C:\\Windows\\ozenuwsx.exe\""	explorer.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

e58768c3df867270aa9e3177709415005914b39d272623e8d296106ad5cf125c.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	e58768c3df867270aa9e3177709415005914b39d272623e8d296106ad5cf125c.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

e58768c3df867270aa9e3177709415005914b39d272623e8d296106ad5cf125c.exee58768c3df867270aa9e3177709415005914b39d272623e8d296106ad5cf125c.exe

description	pid	process	target process
PID 1916 set thread context of 2128	1916	e58768c3df867270aa9e3177709415005914b39d272623e8d296106ad5cf125c.exe	e58768c3df867270aa9e3177709415005914b39d272623e8d296106ad5cf125c.exe
PID 2128 set thread context of 2992	2128	e58768c3df867270aa9e3177709415005914b39d272623e8d296106ad5cf125c.exe	explorer.exe

Drops file in Windows directory 2 IoCs

Processes:

explorer.exe

description ioc process

File opened for modification C:\Windows\ozenuwsx.exe explorer.exe
File created C:\Windows\ozenuwsx.exe explorer.exe

description	ioc	process
File opened for modification	C:\Windows\ozenuwsx.exe	explorer.exe
File created	C:\Windows\ozenuwsx.exe	explorer.exe

System Location Discovery: System Language Discovery 1 TTPs 4 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

Processes:

e58768c3df867270aa9e3177709415005914b39d272623e8d296106ad5cf125c.exee58768c3df867270aa9e3177709415005914b39d272623e8d296106ad5cf125c.exeexplorer.exevssadmin.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e58768c3df867270aa9e3177709415005914b39d272623e8d296106ad5cf125c.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e58768c3df867270aa9e3177709415005914b39d272623e8d296106ad5cf125c.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

Processes:

vssadmin.exe

pid process

2800 vssadmin.exe

pid	process
2800	vssadmin.exe

Modifies Internet Explorer Phishing Filter 1 TTPs 3 IoCs

Modify Registry

T1112

Processes:

explorer.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Internet Explorer\PhishingFilter\EnabledV8 = "0"	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Internet Explorer\PhishingFilter\EnabledV9 = "0"	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Internet Explorer\PhishingFilter	explorer.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

vssvc.exe

description pid process

Token: SeBackupPrivilege 2576 vssvc.exe
Token: SeRestorePrivilege 2576 vssvc.exe
Token: SeAuditPrivilege 2576 vssvc.exe

description	pid	process
Token: SeBackupPrivilege	2576	vssvc.exe
Token: SeRestorePrivilege	2576	vssvc.exe
Token: SeAuditPrivilege	2576	vssvc.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

e58768c3df867270aa9e3177709415005914b39d272623e8d296106ad5cf125c.exee58768c3df867270aa9e3177709415005914b39d272623e8d296106ad5cf125c.exeexplorer.exe

description	pid	process	target process
PID 1916 wrote to memory of 2128	1916	e58768c3df867270aa9e3177709415005914b39d272623e8d296106ad5cf125c.exe	e58768c3df867270aa9e3177709415005914b39d272623e8d296106ad5cf125c.exe
PID 1916 wrote to memory of 2128	1916	e58768c3df867270aa9e3177709415005914b39d272623e8d296106ad5cf125c.exe	e58768c3df867270aa9e3177709415005914b39d272623e8d296106ad5cf125c.exe
PID 1916 wrote to memory of 2128	1916	e58768c3df867270aa9e3177709415005914b39d272623e8d296106ad5cf125c.exe	e58768c3df867270aa9e3177709415005914b39d272623e8d296106ad5cf125c.exe
PID 1916 wrote to memory of 2128	1916	e58768c3df867270aa9e3177709415005914b39d272623e8d296106ad5cf125c.exe	e58768c3df867270aa9e3177709415005914b39d272623e8d296106ad5cf125c.exe
PID 1916 wrote to memory of 2128	1916	e58768c3df867270aa9e3177709415005914b39d272623e8d296106ad5cf125c.exe	e58768c3df867270aa9e3177709415005914b39d272623e8d296106ad5cf125c.exe
PID 1916 wrote to memory of 2128	1916	e58768c3df867270aa9e3177709415005914b39d272623e8d296106ad5cf125c.exe	e58768c3df867270aa9e3177709415005914b39d272623e8d296106ad5cf125c.exe
PID 2128 wrote to memory of 2992	2128	e58768c3df867270aa9e3177709415005914b39d272623e8d296106ad5cf125c.exe	explorer.exe
PID 2128 wrote to memory of 2992	2128	e58768c3df867270aa9e3177709415005914b39d272623e8d296106ad5cf125c.exe	explorer.exe
PID 2128 wrote to memory of 2992	2128	e58768c3df867270aa9e3177709415005914b39d272623e8d296106ad5cf125c.exe	explorer.exe
PID 2128 wrote to memory of 2992	2128	e58768c3df867270aa9e3177709415005914b39d272623e8d296106ad5cf125c.exe	explorer.exe
PID 2128 wrote to memory of 2992	2128	e58768c3df867270aa9e3177709415005914b39d272623e8d296106ad5cf125c.exe	explorer.exe
PID 2992 wrote to memory of 2800	2992	explorer.exe	vssadmin.exe
PID 2992 wrote to memory of 2800	2992	explorer.exe	vssadmin.exe
PID 2992 wrote to memory of 2800	2992	explorer.exe	vssadmin.exe
PID 2992 wrote to memory of 2800	2992	explorer.exe	vssadmin.exe

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\Rack\e58768c3df867270aa9e3177709415005914b39d272623e8d296106ad5cf125c.exe
"C:\Users\Admin\AppData\Local\Temp\Rack\e58768c3df867270aa9e3177709415005914b39d272623e8d296106ad5cf125c.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1916
- C:\Users\Admin\AppData\Local\Temp\Rack\e58768c3df867270aa9e3177709415005914b39d272623e8d296106ad5cf125c.exe
  "C:\Users\Admin\AppData\Local\Temp\Rack\e58768c3df867270aa9e3177709415005914b39d272623e8d296106ad5cf125c.exe"
  2⤵
  - Checks whether UAC is enabled
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2128
- - C:\Windows\SysWOW64\explorer.exe
    "C:\Windows\system32\explorer.exe"
    3⤵
    - 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:2992
  - - C:\Windows\SysWOW64\vssadmin.exe
      vssadmin.exe Delete Shadows /All /Quiet
      4⤵
      System Location Discovery: System Language Discovery
      Interacts with shadow copies
      PID:2800

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2576

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

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Downloads

C:\ProgramData\adyxihodaryrujum\01000000

Filesize
773KB

MD5
b891fdbe73cd4f8f37b4af6fb7203658

SHA1
abc57e103af322654c1f43fa643548e070067c6b

SHA256
62221e46c59bece54c15b093c6f9043a7a7abcf05f0750538ae27ad4ccefea02

SHA512
72afa0855c27d17fb81acec8f556604ff22e9cb7eef97c2f1a2f86a046a7c18f895f15d5c35e8e04e31092017059eb61310807ace6da25f19b9988241172fdeb

Download Submit
memory/1916-7-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/1916-1-0x00000000004D0000-0x00000000004D8000-memory.dmp

Filesize
32KB

Download
memory/1916-0-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download
memory/2128-9-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/2128-10-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/2128-4-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/2128-8-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/2128-18-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/2128-3-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2992-13-0x00000000000C0000-0x00000000000F8000-memory.dmp

Filesize
224KB

Download
memory/2992-12-0x00000000000C0000-0x00000000000F8000-memory.dmp

Filesize
224KB

Download
memory/2992-22-0x00000000000C0000-0x00000000000F8000-memory.dmp

Filesize
224KB

Download
memory/2992-25-0x00000000000C0000-0x00000000000F8000-memory.dmp

Filesize
224KB

Download
memory/2992-26-0x00000000000C0000-0x00000000000F8000-memory.dmp

Filesize
224KB

Download