526b432752bac2edc49ee4a3cc2428f5d7249fa3afe66deba5d23e12e4bce68c

Analysis

max time kernel
148s
max time network
151s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
19-11-2024 23:49

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General

Target

Rack/e4ea72a1de2c5e1388cb35eee6beffdae4e06f9fe08f9aca04ad6350e32e338a.exe
Size

468KB
MD5

48e5a248e84d3f9ca932c3d2aeee820b
SHA1

faf92d3340613a28c16e09a333bfbc51637bb7be
SHA256

e4ea72a1de2c5e1388cb35eee6beffdae4e06f9fe08f9aca04ad6350e32e338a
SHA512

571b92d2309fe3e4ecb9d1a85d45d631b7384fcc8051ca3100f1e6fd0d3cda4de71381f366b248ed2959c304152c2664382f1f6506f613fa08981a198ed9bd7e
SSDEEP

12288:l6UZbz+f5GEfSxPblS876KWMor1jRehXBrcKwyYh:bhz+1f+UhCX12

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\ebanypcq = "C:\\Windows\\ywivavom.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	e4ea72a1de2c5e1388cb35eee6beffdae4e06f9fe08f9aca04ad6350e32e338a.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 956 set thread context of 2300	956	e4ea72a1de2c5e1388cb35eee6beffdae4e06f9fe08f9aca04ad6350e32e338a.exe	31
PID 2300 set thread context of 980	2300	e4ea72a1de2c5e1388cb35eee6beffdae4e06f9fe08f9aca04ad6350e32e338a.exe	32

Drops file in Windows directory 2 IoCs

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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vssadmin.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e4ea72a1de2c5e1388cb35eee6beffdae4e06f9fe08f9aca04ad6350e32e338a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e4ea72a1de2c5e1388cb35eee6beffdae4e06f9fe08f9aca04ad6350e32e338a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	explorer.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
2412	vssadmin.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
956	e4ea72a1de2c5e1388cb35eee6beffdae4e06f9fe08f9aca04ad6350e32e338a.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeBackupPrivilege	2904	vssvc.exe
Token: SeRestorePrivilege	2904	vssvc.exe
Token: SeAuditPrivilege	2904	vssvc.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 956 wrote to memory of 2300	956	e4ea72a1de2c5e1388cb35eee6beffdae4e06f9fe08f9aca04ad6350e32e338a.exe	31
PID 956 wrote to memory of 2300	956	e4ea72a1de2c5e1388cb35eee6beffdae4e06f9fe08f9aca04ad6350e32e338a.exe	31
PID 956 wrote to memory of 2300	956	e4ea72a1de2c5e1388cb35eee6beffdae4e06f9fe08f9aca04ad6350e32e338a.exe	31
PID 956 wrote to memory of 2300	956	e4ea72a1de2c5e1388cb35eee6beffdae4e06f9fe08f9aca04ad6350e32e338a.exe	31
PID 956 wrote to memory of 2300	956	e4ea72a1de2c5e1388cb35eee6beffdae4e06f9fe08f9aca04ad6350e32e338a.exe	31
PID 956 wrote to memory of 2300	956	e4ea72a1de2c5e1388cb35eee6beffdae4e06f9fe08f9aca04ad6350e32e338a.exe	31
PID 956 wrote to memory of 2300	956	e4ea72a1de2c5e1388cb35eee6beffdae4e06f9fe08f9aca04ad6350e32e338a.exe	31
PID 956 wrote to memory of 2300	956	e4ea72a1de2c5e1388cb35eee6beffdae4e06f9fe08f9aca04ad6350e32e338a.exe	31
PID 956 wrote to memory of 2300	956	e4ea72a1de2c5e1388cb35eee6beffdae4e06f9fe08f9aca04ad6350e32e338a.exe	31
PID 956 wrote to memory of 2300	956	e4ea72a1de2c5e1388cb35eee6beffdae4e06f9fe08f9aca04ad6350e32e338a.exe	31
PID 2300 wrote to memory of 980	2300	e4ea72a1de2c5e1388cb35eee6beffdae4e06f9fe08f9aca04ad6350e32e338a.exe	32
PID 2300 wrote to memory of 980	2300	e4ea72a1de2c5e1388cb35eee6beffdae4e06f9fe08f9aca04ad6350e32e338a.exe	32
PID 2300 wrote to memory of 980	2300	e4ea72a1de2c5e1388cb35eee6beffdae4e06f9fe08f9aca04ad6350e32e338a.exe	32
PID 2300 wrote to memory of 980	2300	e4ea72a1de2c5e1388cb35eee6beffdae4e06f9fe08f9aca04ad6350e32e338a.exe	32
PID 2300 wrote to memory of 980	2300	e4ea72a1de2c5e1388cb35eee6beffdae4e06f9fe08f9aca04ad6350e32e338a.exe	32
PID 980 wrote to memory of 2412	980	explorer.exe	33
PID 980 wrote to memory of 2412	980	explorer.exe	33
PID 980 wrote to memory of 2412	980	explorer.exe	33
PID 980 wrote to memory of 2412	980	explorer.exe	33

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\e4ea72a1de2c5e1388cb35eee6beffdae4e06f9fe08f9aca04ad6350e32e338a.exe
"C:\Users\Admin\AppData\Local\Temp\Rack\e4ea72a1de2c5e1388cb35eee6beffdae4e06f9fe08f9aca04ad6350e32e338a.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:956
- C:\Users\Admin\AppData\Local\Temp\Rack\e4ea72a1de2c5e1388cb35eee6beffdae4e06f9fe08f9aca04ad6350e32e338a.exe
  "C:\Users\Admin\AppData\Local\Temp\Rack\e4ea72a1de2c5e1388cb35eee6beffdae4e06f9fe08f9aca04ad6350e32e338a.exe"
  2⤵
  - Checks whether UAC is enabled
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2300
- - 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
    - Suspicious use of WriteProcessMemory
    PID:980
  - - C:\Windows\SysWOW64\vssadmin.exe
      vssadmin.exe Delete Shadows /All /Quiet
      4⤵
      System Location Discovery: System Language Discovery
      Interacts with shadow copies
      PID:2412

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2904

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

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Downloads

C:\ProgramData\yjutohakadofiraj\01000000

Filesize
468KB

MD5
232bc02237b17e36ecca68e66c67018d

SHA1
8d1bc1e3b47109a4023f6a140fcf384fd479f96a

SHA256
fc8598af73b1a8597ddeb5969a1de900d868cce086883da251fcebd075d1ccfa

SHA512
d513c7be7d3dfa6082d3782dd510b3a4c40a9e8b7a6e0607ce35a500b7bad1c0a2e616123a24ffb99a8d3fd394be08509f19adccc68c9009b5706d35f816a6ed

Download Submit
memory/980-16-0x0000000000080000-0x00000000000BC000-memory.dmp

Filesize
240KB

Download
memory/980-29-0x0000000000080000-0x00000000000BC000-memory.dmp

Filesize
240KB

Download
memory/980-27-0x0000000000080000-0x00000000000BC000-memory.dmp

Filesize
240KB

Download
memory/980-17-0x0000000000080000-0x00000000000BC000-memory.dmp

Filesize
240KB

Download
memory/2300-9-0x0000000000400000-0x000000000043B000-memory.dmp

Filesize
236KB

Download
memory/2300-13-0x0000000000400000-0x000000000043B000-memory.dmp

Filesize
236KB

Download
memory/2300-5-0x0000000000400000-0x000000000043B000-memory.dmp

Filesize
236KB

Download
memory/2300-3-0x0000000000400000-0x000000000043B000-memory.dmp

Filesize
236KB

Download
memory/2300-8-0x0000000000400000-0x000000000043B000-memory.dmp

Filesize
236KB

Download
memory/2300-19-0x0000000000400000-0x000000000043B000-memory.dmp

Filesize
236KB

Download
memory/2300-0-0x0000000000400000-0x000000000043B000-memory.dmp

Filesize
236KB

Download
memory/2300-23-0x0000000000400000-0x000000000043B000-memory.dmp

Filesize
236KB

Download
memory/2300-14-0x0000000000400000-0x000000000043B000-memory.dmp

Filesize
236KB

Download
memory/2300-11-0x0000000000400000-0x000000000043B000-memory.dmp

Filesize
236KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads