526b432752bac2edc49ee4a3cc2428f5d7249fa3afe66deba5d23e12e4bce68c

Analysis

max time kernel
149s
max time network
148s
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/47f84419a3c49e289492b9e348c14c268b117cd26964746fa65318c893cbe81f.exe
Size

777KB
MD5

5b712f99b32783231704adc73a251e46
SHA1

cf0589c32b4d18303e194672a7710fd6a9a655d6
SHA256

47f84419a3c49e289492b9e348c14c268b117cd26964746fa65318c893cbe81f
SHA512

b3d45c54a9280534ea6471f252635f5cc04cb8a95f70d87041af24033f21db332184eaba72149c29b1028ba8d84fdfe0b54c46dd91952ca930bebb2a297c22dd
SSDEEP

12288:nZ+pDu9YrDQKiXEfiVzhY1Iys0P9ckXgeteabKSctHSoHJD4XWdFvn:n80sDNiUfiPgI91kXgeYEF2HSoHYCFf

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\tdypyrag = "\"C:\\Windows\\uqopemzr.exe\""	explorer.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

47f84419a3c49e289492b9e348c14c268b117cd26964746fa65318c893cbe81f.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	47f84419a3c49e289492b9e348c14c268b117cd26964746fa65318c893cbe81f.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

47f84419a3c49e289492b9e348c14c268b117cd26964746fa65318c893cbe81f.exe47f84419a3c49e289492b9e348c14c268b117cd26964746fa65318c893cbe81f.exe

description	pid	process	target process
PID 2372 set thread context of 2432	2372	47f84419a3c49e289492b9e348c14c268b117cd26964746fa65318c893cbe81f.exe	47f84419a3c49e289492b9e348c14c268b117cd26964746fa65318c893cbe81f.exe
PID 2432 set thread context of 2964	2432	47f84419a3c49e289492b9e348c14c268b117cd26964746fa65318c893cbe81f.exe	explorer.exe

Drops file in Windows directory 2 IoCs

Processes:

explorer.exe

description ioc process

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

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

47f84419a3c49e289492b9e348c14c268b117cd26964746fa65318c893cbe81f.exe47f84419a3c49e289492b9e348c14c268b117cd26964746fa65318c893cbe81f.exeexplorer.exevssadmin.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	47f84419a3c49e289492b9e348c14c268b117cd26964746fa65318c893cbe81f.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	47f84419a3c49e289492b9e348c14c268b117cd26964746fa65318c893cbe81f.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

2836 vssadmin.exe

pid	process
2836	vssadmin.exe

Modifies Internet Explorer Phishing Filter 1 TTPs 3 IoCs

Modify Registry

T1112

Processes:

explorer.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Internet Explorer\PhishingFilter	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Internet Explorer\PhishingFilter\EnabledV8 = "0"	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Internet Explorer\PhishingFilter\EnabledV9 = "0"	explorer.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

vssvc.exe

description pid process

Token: SeBackupPrivilege 2892 vssvc.exe
Token: SeRestorePrivilege 2892 vssvc.exe
Token: SeAuditPrivilege 2892 vssvc.exe

description	pid	process
Token: SeBackupPrivilege	2892	vssvc.exe
Token: SeRestorePrivilege	2892	vssvc.exe
Token: SeAuditPrivilege	2892	vssvc.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

47f84419a3c49e289492b9e348c14c268b117cd26964746fa65318c893cbe81f.exe47f84419a3c49e289492b9e348c14c268b117cd26964746fa65318c893cbe81f.exeexplorer.exe

description	pid	process	target process
PID 2372 wrote to memory of 2432	2372	47f84419a3c49e289492b9e348c14c268b117cd26964746fa65318c893cbe81f.exe	47f84419a3c49e289492b9e348c14c268b117cd26964746fa65318c893cbe81f.exe
PID 2372 wrote to memory of 2432	2372	47f84419a3c49e289492b9e348c14c268b117cd26964746fa65318c893cbe81f.exe	47f84419a3c49e289492b9e348c14c268b117cd26964746fa65318c893cbe81f.exe
PID 2372 wrote to memory of 2432	2372	47f84419a3c49e289492b9e348c14c268b117cd26964746fa65318c893cbe81f.exe	47f84419a3c49e289492b9e348c14c268b117cd26964746fa65318c893cbe81f.exe
PID 2372 wrote to memory of 2432	2372	47f84419a3c49e289492b9e348c14c268b117cd26964746fa65318c893cbe81f.exe	47f84419a3c49e289492b9e348c14c268b117cd26964746fa65318c893cbe81f.exe
PID 2372 wrote to memory of 2432	2372	47f84419a3c49e289492b9e348c14c268b117cd26964746fa65318c893cbe81f.exe	47f84419a3c49e289492b9e348c14c268b117cd26964746fa65318c893cbe81f.exe
PID 2372 wrote to memory of 2432	2372	47f84419a3c49e289492b9e348c14c268b117cd26964746fa65318c893cbe81f.exe	47f84419a3c49e289492b9e348c14c268b117cd26964746fa65318c893cbe81f.exe
PID 2432 wrote to memory of 2964	2432	47f84419a3c49e289492b9e348c14c268b117cd26964746fa65318c893cbe81f.exe	explorer.exe
PID 2432 wrote to memory of 2964	2432	47f84419a3c49e289492b9e348c14c268b117cd26964746fa65318c893cbe81f.exe	explorer.exe
PID 2432 wrote to memory of 2964	2432	47f84419a3c49e289492b9e348c14c268b117cd26964746fa65318c893cbe81f.exe	explorer.exe
PID 2432 wrote to memory of 2964	2432	47f84419a3c49e289492b9e348c14c268b117cd26964746fa65318c893cbe81f.exe	explorer.exe
PID 2432 wrote to memory of 2964	2432	47f84419a3c49e289492b9e348c14c268b117cd26964746fa65318c893cbe81f.exe	explorer.exe
PID 2964 wrote to memory of 2836	2964	explorer.exe	vssadmin.exe
PID 2964 wrote to memory of 2836	2964	explorer.exe	vssadmin.exe
PID 2964 wrote to memory of 2836	2964	explorer.exe	vssadmin.exe
PID 2964 wrote to memory of 2836	2964	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\47f84419a3c49e289492b9e348c14c268b117cd26964746fa65318c893cbe81f.exe
"C:\Users\Admin\AppData\Local\Temp\Rack\47f84419a3c49e289492b9e348c14c268b117cd26964746fa65318c893cbe81f.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2372
- C:\Users\Admin\AppData\Local\Temp\Rack\47f84419a3c49e289492b9e348c14c268b117cd26964746fa65318c893cbe81f.exe
  "C:\Users\Admin\AppData\Local\Temp\Rack\47f84419a3c49e289492b9e348c14c268b117cd26964746fa65318c893cbe81f.exe"
  2⤵
  - Checks whether UAC is enabled
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2432
- - 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:2964
  - - C:\Windows\SysWOW64\vssadmin.exe
      vssadmin.exe Delete Shadows /All /Quiet
      4⤵
      System Location Discovery: System Language Discovery
      Interacts with shadow copies
      PID:2836

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2892

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\idumewitynofyran\01000000

Filesize
777KB

MD5
7e26c44c749bf583c763b97249ff43fb

SHA1
3f4b5f9ef4ce9e3d63ace5b8a153e27c76a8e679

SHA256
9f6ea141268bd6234c7445b3d3d16b920d810905c0301746ef09ad9aefd4c6c8

SHA512
a494fb3a66147a13957083a977e8c88a73907519ead560ea796ba9bd1ffea89dadcf48e37f6bf71739bcb0660c4bc754771785a3ec4eaf1d64c0d507f295d81a

Download Submit
memory/2372-9-0x00000000001B0000-0x00000000001B1000-memory.dmp

Filesize
4KB

Download
memory/2372-1-0x00000000003D0000-0x00000000003D8000-memory.dmp

Filesize
32KB

Download
memory/2372-11-0x0000000000400000-0x00000000004C9000-memory.dmp

Filesize
804KB

Download
memory/2372-0-0x00000000001B0000-0x00000000001B1000-memory.dmp

Filesize
4KB

Download
memory/2432-7-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/2432-10-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/2432-2-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2432-8-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/2432-4-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/2432-18-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/2964-13-0x0000000000080000-0x00000000000BC000-memory.dmp

Filesize
240KB

Download
memory/2964-14-0x0000000000080000-0x00000000000BC000-memory.dmp

Filesize
240KB

Download
memory/2964-21-0x0000000000080000-0x00000000000BC000-memory.dmp

Filesize
240KB

Download
memory/2964-24-0x0000000000080000-0x00000000000BC000-memory.dmp

Filesize
240KB

Download