3801aaf6403d75b9db2f6dbd66c6290384d30314f3dca713b8808ef100a9f9a4

General

Target

3801aaf6403d75b9db2f6dbd66c6290384d30314f3dca713b8808ef100a9f9a4.exe
Size

296KB
MD5

a9bebdadc68b0e0430679784c52b6c5a
SHA1

97ad8adba9f347d5238382cf297cce160b0e3be6
SHA256

3801aaf6403d75b9db2f6dbd66c6290384d30314f3dca713b8808ef100a9f9a4
SHA512

29cf055f0ca1173478ae49bd478fe14b4c3612a254278a626172f3c41bab72d4a736ddbfb932f5f38ded447a14a491bf32f19df22d17c107c256d8310610a44f
SSDEEP

6144:3ZY8k5DlC0yqnrx54XuG7ft6dGNYqOdA6VpIjyiQErU:3ydw1qnNouGZuuvOhiyiRU

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
T1107

Inhibit System Recovery
T1490

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run	explorer.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\iriqyluv = "\"C:\\Windows\\ivovufdq.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	3801aaf6403d75b9db2f6dbd66c6290384d30314f3dca713b8808ef100a9f9a4.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1556 set thread context of 1676	1556	3801aaf6403d75b9db2f6dbd66c6290384d30314f3dca713b8808ef100a9f9a4.exe	27
PID 1676 set thread context of 1744	1676	3801aaf6403d75b9db2f6dbd66c6290384d30314f3dca713b8808ef100a9f9a4.exe	28

Drops file in Windows directory 2 IoCs

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

T1107

Inhibit System Recovery

T1490

pid	Process
468	vssadmin.exe

Modifies Internet Explorer Phishing Filter 1 TTPs 3 IoCs

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\PhishingFilter	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\PhishingFilter\EnabledV8 = "0"	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\PhishingFilter\EnabledV9 = "0"	explorer.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1556	3801aaf6403d75b9db2f6dbd66c6290384d30314f3dca713b8808ef100a9f9a4.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeBackupPrivilege	1248	vssvc.exe
Token: SeRestorePrivilege	1248	vssvc.exe
Token: SeAuditPrivilege	1248	vssvc.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1556	3801aaf6403d75b9db2f6dbd66c6290384d30314f3dca713b8808ef100a9f9a4.exe
1556	3801aaf6403d75b9db2f6dbd66c6290384d30314f3dca713b8808ef100a9f9a4.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 1556 wrote to memory of 1676	1556	3801aaf6403d75b9db2f6dbd66c6290384d30314f3dca713b8808ef100a9f9a4.exe	27
PID 1556 wrote to memory of 1676	1556	3801aaf6403d75b9db2f6dbd66c6290384d30314f3dca713b8808ef100a9f9a4.exe	27
PID 1556 wrote to memory of 1676	1556	3801aaf6403d75b9db2f6dbd66c6290384d30314f3dca713b8808ef100a9f9a4.exe	27
PID 1556 wrote to memory of 1676	1556	3801aaf6403d75b9db2f6dbd66c6290384d30314f3dca713b8808ef100a9f9a4.exe	27
PID 1556 wrote to memory of 1676	1556	3801aaf6403d75b9db2f6dbd66c6290384d30314f3dca713b8808ef100a9f9a4.exe	27
PID 1556 wrote to memory of 1676	1556	3801aaf6403d75b9db2f6dbd66c6290384d30314f3dca713b8808ef100a9f9a4.exe	27
PID 1556 wrote to memory of 1676	1556	3801aaf6403d75b9db2f6dbd66c6290384d30314f3dca713b8808ef100a9f9a4.exe	27
PID 1556 wrote to memory of 1676	1556	3801aaf6403d75b9db2f6dbd66c6290384d30314f3dca713b8808ef100a9f9a4.exe	27
PID 1556 wrote to memory of 1676	1556	3801aaf6403d75b9db2f6dbd66c6290384d30314f3dca713b8808ef100a9f9a4.exe	27
PID 1556 wrote to memory of 1676	1556	3801aaf6403d75b9db2f6dbd66c6290384d30314f3dca713b8808ef100a9f9a4.exe	27
PID 1556 wrote to memory of 1676	1556	3801aaf6403d75b9db2f6dbd66c6290384d30314f3dca713b8808ef100a9f9a4.exe	27
PID 1676 wrote to memory of 1744	1676	3801aaf6403d75b9db2f6dbd66c6290384d30314f3dca713b8808ef100a9f9a4.exe	28
PID 1676 wrote to memory of 1744	1676	3801aaf6403d75b9db2f6dbd66c6290384d30314f3dca713b8808ef100a9f9a4.exe	28
PID 1676 wrote to memory of 1744	1676	3801aaf6403d75b9db2f6dbd66c6290384d30314f3dca713b8808ef100a9f9a4.exe	28
PID 1676 wrote to memory of 1744	1676	3801aaf6403d75b9db2f6dbd66c6290384d30314f3dca713b8808ef100a9f9a4.exe	28
PID 1676 wrote to memory of 1744	1676	3801aaf6403d75b9db2f6dbd66c6290384d30314f3dca713b8808ef100a9f9a4.exe	28
PID 1744 wrote to memory of 468	1744	explorer.exe	29
PID 1744 wrote to memory of 468	1744	explorer.exe	29
PID 1744 wrote to memory of 468	1744	explorer.exe	29
PID 1744 wrote to memory of 468	1744	explorer.exe	29

C:\Users\Admin\AppData\Local\Temp\3801aaf6403d75b9db2f6dbd66c6290384d30314f3dca713b8808ef100a9f9a4.exe
"C:\Users\Admin\AppData\Local\Temp\3801aaf6403d75b9db2f6dbd66c6290384d30314f3dca713b8808ef100a9f9a4.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1556
- C:\Users\Admin\AppData\Local\Temp\3801aaf6403d75b9db2f6dbd66c6290384d30314f3dca713b8808ef100a9f9a4.exe
  C:\Users\Admin\AppData\Local\Temp\3801aaf6403d75b9db2f6dbd66c6290384d30314f3dca713b8808ef100a9f9a4.exe
  2⤵
  - Checks whether UAC is enabled
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:1676
- - C:\Windows\SysWOW64\explorer.exe
    "C:\Windows\system32\explorer.exe"
    3⤵
    - Adds Run key to start application
    - Drops file in Windows directory
    - Modifies Internet Explorer Phishing Filter
    - Suspicious use of WriteProcessMemory
    PID:1744
  - - C:\Windows\SysWOW64\vssadmin.exe
      vssadmin.exe Delete Shadows /All /Quiet
      4⤵
      Interacts with shadow copies
      PID:468

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1248

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

File Deletion

Modify Registry

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Inhibit System Recovery

2

T1490

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Downloads

C:\ProgramData\ulyrinojulidubec\01000000

Filesize
296KB

MD5
16f1dc755b0adf7b96ddef7b8d75ef91

SHA1
fb1d3fccf131f63912c3c7a2cf903f3cad0852a3

SHA256
d42dfbcf91fe21af58b8f249d3f4c263aa1955f262b50250f65212a58709a24b

SHA512
076fd5eed70b2401ec56bb954dcf304b54dac3647e53ad49b4f666f308704522f504e397c9df615c3f0001bcbea9e02186264ed565f1a8527fda0e7b05111a07

Download Submit
memory/1556-54-0x0000000075CF1000-0x0000000075CF3000-memory.dmp

Filesize
8KB

Download
memory/1556-58-0x0000000000280000-0x0000000000284000-memory.dmp

Filesize
16KB

Download
memory/1676-69-0x0000000000400000-0x0000000001400000-memory.dmp

Filesize
16.0MB

Download
memory/1676-56-0x0000000000400000-0x0000000001400000-memory.dmp

Filesize
16.0MB

Download
memory/1676-62-0x0000000000400000-0x0000000001400000-memory.dmp

Filesize
16.0MB

Download
memory/1676-63-0x0000000000400000-0x0000000001400000-memory.dmp

Filesize
16.0MB

Download
memory/1676-65-0x0000000000400000-0x0000000001400000-memory.dmp

Filesize
16.0MB

Download
memory/1676-59-0x0000000000400000-0x0000000001400000-memory.dmp

Filesize
16.0MB

Download
memory/1676-70-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/1676-55-0x0000000000400000-0x0000000001400000-memory.dmp

Filesize
16.0MB

Download
memory/1676-80-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/1676-61-0x0000000000400000-0x0000000001400000-memory.dmp

Filesize
16.0MB

Download
memory/1744-77-0x0000000075501000-0x0000000075503000-memory.dmp

Filesize
8KB

Download
memory/1744-78-0x00000000000C0000-0x00000000000FC000-memory.dmp

Filesize
240KB

Download
memory/1744-73-0x00000000000C0000-0x00000000000FC000-memory.dmp

Filesize
240KB

Download
memory/1744-71-0x00000000000C0000-0x00000000000FC000-memory.dmp

Filesize
240KB

Download
memory/1744-82-0x00000000730A1000-0x00000000730A3000-memory.dmp

Filesize
8KB

Download
memory/1744-83-0x00000000000C0000-0x00000000000FC000-memory.dmp

Filesize
240KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads