83501ac636445618393d331d2a07cec9d0b67cd93c8c05f702cb532ac054ef64

Analysis

max time kernel
150s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
22-12-2023 13:45

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General

Target

Price.Pdf_____________________________________________________________.exe
Size

193KB
MD5

30e0b36b2d521349158517b34d4acd78
SHA1

cd42b3395aa69071e9b60bd6760c356ec91478ee
SHA256

5578d702c7fd246e11f71c4edb27b316ca267c6161effab324c9f6e6260bc9e5
SHA512

ead402fd51d9438d94019d5311e6a82b550e436a30df107a5d78b3a83ef89730a9250c8f5b1f5ba1e77373d94cc8d432ffa3f5d9e3ebb2c813dcb8e1be552722
SSDEEP

3072:9DsjAbUHwEHnhP3UL9QPbOSp6KgT2vGagCJK51YinXp:9DmAAHtx3UL9+bOVKqCJK5mi5

Score

9^/10

evasion persistence ransomware trojan

Malware Config

Signatures

Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
ransomware

File Deletion
T1070.004

Inhibit System Recovery
T1490

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\yjakisac = "C:\\Windows\\yjasuqox.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	Price.Pdf_____________________________________________________________.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1220 set thread context of 1460	1220	Price.Pdf_____________________________________________________________.exe	25

Drops file in Windows directory 2 IoCs

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

Interacts with shadow copies 2 TTPs 1 IoCs

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

ransomware

File Deletion

T1070.004

Inhibit System Recovery

T1490

pid	Process
2512	vssadmin.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeBackupPrivilege	4040	vssvc.exe
Token: SeRestorePrivilege	4040	vssvc.exe
Token: SeAuditPrivilege	4040	vssvc.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1220 wrote to memory of 1460	1220	Price.Pdf_____________________________________________________________.exe	25
PID 1220 wrote to memory of 1460	1220	Price.Pdf_____________________________________________________________.exe	25
PID 1220 wrote to memory of 1460	1220	Price.Pdf_____________________________________________________________.exe	25
PID 1220 wrote to memory of 1460	1220	Price.Pdf_____________________________________________________________.exe	25
PID 1460 wrote to memory of 2512	1460	explorer.exe	21
PID 1460 wrote to memory of 2512	1460	explorer.exe	21

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\Price.Pdf_____________________________________________________________.exe
"C:\Users\Admin\AppData\Local\Temp\Price.Pdf_____________________________________________________________.exe"
1⤵
- Checks whether UAC is enabled
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1220
- C:\Windows\SysWOW64\explorer.exe
  "C:\Windows\system32\explorer.exe"
  2⤵
  - Adds Run key to start application
  - Drops file in Windows directory
  - Suspicious use of WriteProcessMemory
  PID:1460

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4040

C:\Windows\SYSTEM32\vssadmin.exe
vssadmin.exe Delete Shadows /All /Quiet
1⤵
- Interacts with shadow copies
PID:2512

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

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

Indicator Removal

T1070

File Deletion

T1070.004

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Inhibit System Recovery

T1490

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Downloads

C:\ProgramData\ycivoroqytavyzoh\01000000

Filesize
10KB

MD5
a2e0b04e3f246c8ab03cc68620ccaf58

SHA1
c3a52f81689afd1d6cc169aba3c23d1ebf0b60af

SHA256
5851327796d23dc463c042ededf555277262054fb5117e240726f39ca0c98d73

SHA512
96be2e6e1e9006acf48deb3dba9e1262ba17ebe26d0f0feb0ffb987bbd85fd0b2fd6765ba0929df4a0a94ca047f7de18339c8752a7a7e5c0453820da057441a0

Download Submit
memory/1460-1-0x00000000010B0000-0x00000000010EB000-memory.dmp

Filesize
236KB

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memory/1460-9-0x00000000010B0000-0x00000000010EB000-memory.dmp

Filesize
236KB

Download
memory/1460-7-0x00000000010B0000-0x00000000010EB000-memory.dmp

Filesize
236KB

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads