526b432752bac2edc49ee4a3cc2428f5d7249fa3afe66deba5d23e12e4bce68c

Analysis

max time kernel
149s
max time network
152s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
19-11-2024 23:52

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General

Target

Rack/8afc51fb904b25124bd5cb41985e917333071d1af1c6ab83cc7ae408e7cb0e7e.exe
Size

765KB
MD5

54a6d762039fd77d11669ca5ee10f56f
SHA1

3f2b17cbe9a5291d8f14f9359113bf7f59ea13ba
SHA256

8afc51fb904b25124bd5cb41985e917333071d1af1c6ab83cc7ae408e7cb0e7e
SHA512

44fe379e68cdbac584d33589859ca65791640e1a013dbc92bb770ede63f95841ddb2e76f7616f2736417c8b8ad040ce3cebbd669882a7e88a1e1c09d65f789de
SSDEEP

12288:oV+pDu9YrDQKiXEfiVzhY1Iys0P9ck4gete0bKSctHSoHvVn6eVijzFME4fmUReH:oI0sDNiUfiPgI91k4geY2F2HSoHvB6cs

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\yqubohix = "\"C:\\Windows\\omnwosyq.exe\""	explorer.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

8afc51fb904b25124bd5cb41985e917333071d1af1c6ab83cc7ae408e7cb0e7e.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	8afc51fb904b25124bd5cb41985e917333071d1af1c6ab83cc7ae408e7cb0e7e.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

8afc51fb904b25124bd5cb41985e917333071d1af1c6ab83cc7ae408e7cb0e7e.exe8afc51fb904b25124bd5cb41985e917333071d1af1c6ab83cc7ae408e7cb0e7e.exe

description	pid	process	target process
PID 2332 set thread context of 2072	2332	8afc51fb904b25124bd5cb41985e917333071d1af1c6ab83cc7ae408e7cb0e7e.exe	8afc51fb904b25124bd5cb41985e917333071d1af1c6ab83cc7ae408e7cb0e7e.exe
PID 2072 set thread context of 1096	2072	8afc51fb904b25124bd5cb41985e917333071d1af1c6ab83cc7ae408e7cb0e7e.exe	explorer.exe

Drops file in Windows directory 2 IoCs

Processes:

explorer.exe

description ioc process

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

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

8afc51fb904b25124bd5cb41985e917333071d1af1c6ab83cc7ae408e7cb0e7e.exe8afc51fb904b25124bd5cb41985e917333071d1af1c6ab83cc7ae408e7cb0e7e.exeexplorer.exevssadmin.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8afc51fb904b25124bd5cb41985e917333071d1af1c6ab83cc7ae408e7cb0e7e.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8afc51fb904b25124bd5cb41985e917333071d1af1c6ab83cc7ae408e7cb0e7e.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

1992 vssadmin.exe

pid	process
1992	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-1-5-21-3551809350-4263495960-1443967649-1000\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

Processes:

vssvc.exe

description pid process

Token: SeBackupPrivilege 2808 vssvc.exe
Token: SeRestorePrivilege 2808 vssvc.exe
Token: SeAuditPrivilege 2808 vssvc.exe

description	pid	process
Token: SeBackupPrivilege	2808	vssvc.exe
Token: SeRestorePrivilege	2808	vssvc.exe
Token: SeAuditPrivilege	2808	vssvc.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

8afc51fb904b25124bd5cb41985e917333071d1af1c6ab83cc7ae408e7cb0e7e.exe8afc51fb904b25124bd5cb41985e917333071d1af1c6ab83cc7ae408e7cb0e7e.exeexplorer.exe

description	pid	process	target process
PID 2332 wrote to memory of 2072	2332	8afc51fb904b25124bd5cb41985e917333071d1af1c6ab83cc7ae408e7cb0e7e.exe	8afc51fb904b25124bd5cb41985e917333071d1af1c6ab83cc7ae408e7cb0e7e.exe
PID 2332 wrote to memory of 2072	2332	8afc51fb904b25124bd5cb41985e917333071d1af1c6ab83cc7ae408e7cb0e7e.exe	8afc51fb904b25124bd5cb41985e917333071d1af1c6ab83cc7ae408e7cb0e7e.exe
PID 2332 wrote to memory of 2072	2332	8afc51fb904b25124bd5cb41985e917333071d1af1c6ab83cc7ae408e7cb0e7e.exe	8afc51fb904b25124bd5cb41985e917333071d1af1c6ab83cc7ae408e7cb0e7e.exe
PID 2332 wrote to memory of 2072	2332	8afc51fb904b25124bd5cb41985e917333071d1af1c6ab83cc7ae408e7cb0e7e.exe	8afc51fb904b25124bd5cb41985e917333071d1af1c6ab83cc7ae408e7cb0e7e.exe
PID 2332 wrote to memory of 2072	2332	8afc51fb904b25124bd5cb41985e917333071d1af1c6ab83cc7ae408e7cb0e7e.exe	8afc51fb904b25124bd5cb41985e917333071d1af1c6ab83cc7ae408e7cb0e7e.exe
PID 2332 wrote to memory of 2072	2332	8afc51fb904b25124bd5cb41985e917333071d1af1c6ab83cc7ae408e7cb0e7e.exe	8afc51fb904b25124bd5cb41985e917333071d1af1c6ab83cc7ae408e7cb0e7e.exe
PID 2072 wrote to memory of 1096	2072	8afc51fb904b25124bd5cb41985e917333071d1af1c6ab83cc7ae408e7cb0e7e.exe	explorer.exe
PID 2072 wrote to memory of 1096	2072	8afc51fb904b25124bd5cb41985e917333071d1af1c6ab83cc7ae408e7cb0e7e.exe	explorer.exe
PID 2072 wrote to memory of 1096	2072	8afc51fb904b25124bd5cb41985e917333071d1af1c6ab83cc7ae408e7cb0e7e.exe	explorer.exe
PID 2072 wrote to memory of 1096	2072	8afc51fb904b25124bd5cb41985e917333071d1af1c6ab83cc7ae408e7cb0e7e.exe	explorer.exe
PID 2072 wrote to memory of 1096	2072	8afc51fb904b25124bd5cb41985e917333071d1af1c6ab83cc7ae408e7cb0e7e.exe	explorer.exe
PID 1096 wrote to memory of 1992	1096	explorer.exe	vssadmin.exe
PID 1096 wrote to memory of 1992	1096	explorer.exe	vssadmin.exe
PID 1096 wrote to memory of 1992	1096	explorer.exe	vssadmin.exe
PID 1096 wrote to memory of 1992	1096	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\8afc51fb904b25124bd5cb41985e917333071d1af1c6ab83cc7ae408e7cb0e7e.exe
"C:\Users\Admin\AppData\Local\Temp\Rack\8afc51fb904b25124bd5cb41985e917333071d1af1c6ab83cc7ae408e7cb0e7e.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2332
- C:\Users\Admin\AppData\Local\Temp\Rack\8afc51fb904b25124bd5cb41985e917333071d1af1c6ab83cc7ae408e7cb0e7e.exe
  "C:\Users\Admin\AppData\Local\Temp\Rack\8afc51fb904b25124bd5cb41985e917333071d1af1c6ab83cc7ae408e7cb0e7e.exe"
  2⤵
  - Checks whether UAC is enabled
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2072
- - 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:1096
  - - C:\Windows\SysWOW64\vssadmin.exe
      vssadmin.exe Delete Shadows /All /Quiet
      4⤵
      System Location Discovery: System Language Discovery
      Interacts with shadow copies
      PID:1992

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2808

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
765KB

MD5
91525b962942332f4b8612a8e3677966

SHA1
a14146585e5047260001a2ccc422851e9fa366c8

SHA256
296d2de81b7c1fc74c2cbf3627041b4b67bec056e899283c76e2d07cf76bb518

SHA512
3b0749c32238d98e9306fa2fdcc6193ecaa08fbc7cfee3b1d5835717a11fe9043c1133eb290f78f782fd1f1f57fba1fe1b3c925309be7ed9bba9a0bc2e79abb3

Download Submit
memory/1096-26-0x0000000000130000-0x0000000000168000-memory.dmp

Filesize
224KB

Download
memory/1096-23-0x0000000000130000-0x0000000000168000-memory.dmp

Filesize
224KB

Download
memory/1096-13-0x0000000000130000-0x0000000000168000-memory.dmp

Filesize
224KB

Download
memory/1096-12-0x0000000000130000-0x0000000000168000-memory.dmp

Filesize
224KB

Download
memory/2072-19-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/2072-4-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/2072-10-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/2072-8-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/2072-7-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/2072-2-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2332-9-0x00000000001C0000-0x00000000001C1000-memory.dmp

Filesize
4KB

Download
memory/2332-15-0x0000000000400000-0x00000000004C6000-memory.dmp

Filesize
792KB

Download
memory/2332-0-0x00000000001C0000-0x00000000001C1000-memory.dmp

Filesize
4KB

Download
memory/2332-1-0x0000000000270000-0x0000000000278000-memory.dmp

Filesize
32KB

Download