38687ba43a7985f681919df62c40e848e0d7f663ab01f2036f250400eecda131

General

Target

38687ba43a7985f681919df62c40e848e0d7f663ab01f2036f250400eecda131.exe
Size

639KB
MD5

589dbede3625d0fd43edb065b960d810
SHA1

803b7f8a439d024984f96f5c670cdcbf3d35d00e
SHA256

38687ba43a7985f681919df62c40e848e0d7f663ab01f2036f250400eecda131
SHA512

58261cdbb8770e05e614a0b97a8c975adbe8303966246fc4d3f4b2d73ae2797e6484c54a9d667d23595e273fa3dc01754ac43725595718c597fee4b45b2ca2ab
SSDEEP

12288:YMu3qmIifAhqDX2GrMEMRfrKnpth0WA80c3xjAfOvNa:f05DX2Go1RMLhEw8WM

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\anapojyc = "\"C:\\Windows\\utarlfab.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	38687ba43a7985f681919df62c40e848e0d7f663ab01f2036f250400eecda131.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2088 set thread context of 4952	2088	38687ba43a7985f681919df62c40e848e0d7f663ab01f2036f250400eecda131.exe	81
PID 4952 set thread context of 3872	4952	38687ba43a7985f681919df62c40e848e0d7f663ab01f2036f250400eecda131.exe	82

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\utarlfab.exe	explorer.exe
File created	C:\Windows\utarlfab.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
4660	vssadmin.exe

Modifies Internet Explorer Phishing Filter 1 TTPs 3 IoCs

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\PhishingFilter\EnabledV9 = "0"	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\PhishingFilter	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\PhishingFilter\EnabledV8 = "0"	explorer.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeBackupPrivilege	4884	vssvc.exe
Token: SeRestorePrivilege	4884	vssvc.exe
Token: SeAuditPrivilege	4884	vssvc.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2088	38687ba43a7985f681919df62c40e848e0d7f663ab01f2036f250400eecda131.exe
2088	38687ba43a7985f681919df62c40e848e0d7f663ab01f2036f250400eecda131.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 2088 wrote to memory of 4952	2088	38687ba43a7985f681919df62c40e848e0d7f663ab01f2036f250400eecda131.exe	81
PID 2088 wrote to memory of 4952	2088	38687ba43a7985f681919df62c40e848e0d7f663ab01f2036f250400eecda131.exe	81
PID 2088 wrote to memory of 4952	2088	38687ba43a7985f681919df62c40e848e0d7f663ab01f2036f250400eecda131.exe	81
PID 2088 wrote to memory of 4952	2088	38687ba43a7985f681919df62c40e848e0d7f663ab01f2036f250400eecda131.exe	81
PID 2088 wrote to memory of 4952	2088	38687ba43a7985f681919df62c40e848e0d7f663ab01f2036f250400eecda131.exe	81
PID 2088 wrote to memory of 4952	2088	38687ba43a7985f681919df62c40e848e0d7f663ab01f2036f250400eecda131.exe	81
PID 2088 wrote to memory of 4952	2088	38687ba43a7985f681919df62c40e848e0d7f663ab01f2036f250400eecda131.exe	81
PID 2088 wrote to memory of 4952	2088	38687ba43a7985f681919df62c40e848e0d7f663ab01f2036f250400eecda131.exe	81
PID 2088 wrote to memory of 4952	2088	38687ba43a7985f681919df62c40e848e0d7f663ab01f2036f250400eecda131.exe	81
PID 2088 wrote to memory of 4952	2088	38687ba43a7985f681919df62c40e848e0d7f663ab01f2036f250400eecda131.exe	81
PID 4952 wrote to memory of 3872	4952	38687ba43a7985f681919df62c40e848e0d7f663ab01f2036f250400eecda131.exe	82
PID 4952 wrote to memory of 3872	4952	38687ba43a7985f681919df62c40e848e0d7f663ab01f2036f250400eecda131.exe	82
PID 4952 wrote to memory of 3872	4952	38687ba43a7985f681919df62c40e848e0d7f663ab01f2036f250400eecda131.exe	82
PID 4952 wrote to memory of 3872	4952	38687ba43a7985f681919df62c40e848e0d7f663ab01f2036f250400eecda131.exe	82
PID 3872 wrote to memory of 4660	3872	explorer.exe	83
PID 3872 wrote to memory of 4660	3872	explorer.exe	83

C:\Users\Admin\AppData\Local\Temp\38687ba43a7985f681919df62c40e848e0d7f663ab01f2036f250400eecda131.exe
"C:\Users\Admin\AppData\Local\Temp\38687ba43a7985f681919df62c40e848e0d7f663ab01f2036f250400eecda131.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2088
- C:\Users\Admin\AppData\Local\Temp\38687ba43a7985f681919df62c40e848e0d7f663ab01f2036f250400eecda131.exe
  "C:\Users\Admin\AppData\Local\Temp\38687ba43a7985f681919df62c40e848e0d7f663ab01f2036f250400eecda131.exe"
  2⤵
  - Checks whether UAC is enabled
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:4952
- - 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:3872
  - - C:\Windows\SYSTEM32\vssadmin.exe
      vssadmin.exe Delete Shadows /All /Quiet
      4⤵
      Interacts with shadow copies
      PID:4660

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4884

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\iwumyqytawumecyj\01000000

Filesize
639KB

MD5
5f8e626eead6ec30ebdedb4043c0b375

SHA1
75ac84e261225146e8bbc6a13fa39a554da00329

SHA256
e35dec983f5c7cc4d71a445a89f482a97e1119bcb892191699f5f1090e1ba90a

SHA512
ed16181df6b0aa3d967523febca99273a57c36fbd3d2f98c2e97769c68c9f9ee3044a43530b7602b3a01cebc7a150a41863edcd7ff10f9f1e822f471c03cd920

Download Submit
memory/3872-138-0x0000000000B40000-0x0000000000B78000-memory.dmp

Filesize
224KB

Download
memory/3872-143-0x0000000000B40000-0x0000000000B78000-memory.dmp

Filesize
224KB

Download
memory/3872-144-0x0000000000B40000-0x0000000000B78000-memory.dmp

Filesize
224KB

Download
memory/4952-133-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/4952-135-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/4952-136-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/4952-141-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads