cryptolocker | b4c05e0e065058ae79d3ce9d51a470946aae036d2b163f85adcef10a6343246a

General

Target

b4c05e0e065058ae79d3ce9d51a470946aae036d2b163f85adcef10a6343246a.exe
Size

744KB
MD5

7f3cc059ffc6c11fe42695e5f19553ab
SHA1

f22555d2898e3486b2c628a2e523657f5fbbe475
SHA256

b4c05e0e065058ae79d3ce9d51a470946aae036d2b163f85adcef10a6343246a
SHA512

441654be8d2f49ae98d60c9a71f903d5bc861fa3c61806f78c93ed04cce1c9e1efa75961813c11119b1e1db8b181aa237e4ae0cb24fa8a9f1a7d2590229c98fc
SSDEEP

12288:qq/OIg++nlSl1ljxOzAqzmkZh9Twx2p9SoBUkAKL9Aus+8:qq/OIYlSl/jTqzmMhwW9KgL+

Score

10^/10

cryptolocker persistence ransomware

Malware Config

Signatures

CryptoLocker
Ransomware family with multiple variants.
ransomware cryptolocker
Executes dropped EXE 2 IoCs

Processes:

Avywuixyxmexxtr.exeAvywuixyxmexxtr.exe

pid process

1152 Avywuixyxmexxtr.exe
2032 Avywuixyxmexxtr.exe
Deletes itself 1 IoCs

Processes:

Avywuixyxmexxtr.exe

pid process

1152 Avywuixyxmexxtr.exe

pid	process
1152	Avywuixyxmexxtr.exe
2032	Avywuixyxmexxtr.exe

pid	process
1152	Avywuixyxmexxtr.exe

Loads dropped DLL 2 IoCs

Processes:

b4c05e0e065058ae79d3ce9d51a470946aae036d2b163f85adcef10a6343246a.exe

pid	process
1444	b4c05e0e065058ae79d3ce9d51a470946aae036d2b163f85adcef10a6343246a.exe
1444	b4c05e0e065058ae79d3ce9d51a470946aae036d2b163f85adcef10a6343246a.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

Avywuixyxmexxtr.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce	Avywuixyxmexxtr.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\*CryptoLocker = "C:\\Users\\Admin\\AppData\\Local\\Avywuixyxmexxtr.exe"	Avywuixyxmexxtr.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run	Avywuixyxmexxtr.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\CryptoLocker = "C:\\Users\\Admin\\AppData\\Local\\Avywuixyxmexxtr.exe"	Avywuixyxmexxtr.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

b4c05e0e065058ae79d3ce9d51a470946aae036d2b163f85adcef10a6343246a.exeAvywuixyxmexxtr.exe

description	pid	process	target process
PID 1444 wrote to memory of 1152	1444	b4c05e0e065058ae79d3ce9d51a470946aae036d2b163f85adcef10a6343246a.exe	Avywuixyxmexxtr.exe
PID 1444 wrote to memory of 1152	1444	b4c05e0e065058ae79d3ce9d51a470946aae036d2b163f85adcef10a6343246a.exe	Avywuixyxmexxtr.exe
PID 1444 wrote to memory of 1152	1444	b4c05e0e065058ae79d3ce9d51a470946aae036d2b163f85adcef10a6343246a.exe	Avywuixyxmexxtr.exe
PID 1444 wrote to memory of 1152	1444	b4c05e0e065058ae79d3ce9d51a470946aae036d2b163f85adcef10a6343246a.exe	Avywuixyxmexxtr.exe
PID 1152 wrote to memory of 2032	1152	Avywuixyxmexxtr.exe	Avywuixyxmexxtr.exe
PID 1152 wrote to memory of 2032	1152	Avywuixyxmexxtr.exe	Avywuixyxmexxtr.exe
PID 1152 wrote to memory of 2032	1152	Avywuixyxmexxtr.exe	Avywuixyxmexxtr.exe
PID 1152 wrote to memory of 2032	1152	Avywuixyxmexxtr.exe	Avywuixyxmexxtr.exe

C:\Users\Admin\AppData\Local\Temp\b4c05e0e065058ae79d3ce9d51a470946aae036d2b163f85adcef10a6343246a.exe
"C:\Users\Admin\AppData\Local\Temp\b4c05e0e065058ae79d3ce9d51a470946aae036d2b163f85adcef10a6343246a.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1444
- C:\Users\Admin\AppData\Local\Avywuixyxmexxtr.exe
  "C:\Users\Admin\AppData\Local\Avywuixyxmexxtr.exe" "-rC:\Users\Admin\AppData\Local\Temp\b4c05e0e065058ae79d3ce9d51a470946aae036d2b163f85adcef10a6343246a.exe"
  2⤵
  - Executes dropped EXE
  - Deletes itself
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:1152
- - C:\Users\Admin\AppData\Local\Avywuixyxmexxtr.exe
    "C:\Users\Admin\AppData\Local\Avywuixyxmexxtr.exe" -w130
    3⤵
    - Executes dropped EXE
    PID:2032

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Avywuixyxmexxtr.exe

Filesize
744KB

MD5
7f3cc059ffc6c11fe42695e5f19553ab

SHA1
f22555d2898e3486b2c628a2e523657f5fbbe475

SHA256
b4c05e0e065058ae79d3ce9d51a470946aae036d2b163f85adcef10a6343246a

SHA512
441654be8d2f49ae98d60c9a71f903d5bc861fa3c61806f78c93ed04cce1c9e1efa75961813c11119b1e1db8b181aa237e4ae0cb24fa8a9f1a7d2590229c98fc

Download Submit
C:\Users\Admin\AppData\Local\Avywuixyxmexxtr.exe

Filesize
744KB

MD5
7f3cc059ffc6c11fe42695e5f19553ab

SHA1
f22555d2898e3486b2c628a2e523657f5fbbe475

SHA256
b4c05e0e065058ae79d3ce9d51a470946aae036d2b163f85adcef10a6343246a

SHA512
441654be8d2f49ae98d60c9a71f903d5bc861fa3c61806f78c93ed04cce1c9e1efa75961813c11119b1e1db8b181aa237e4ae0cb24fa8a9f1a7d2590229c98fc

Download Submit
C:\Users\Admin\AppData\Local\Avywuixyxmexxtr.exe

Filesize
744KB

MD5
7f3cc059ffc6c11fe42695e5f19553ab

SHA1
f22555d2898e3486b2c628a2e523657f5fbbe475

SHA256
b4c05e0e065058ae79d3ce9d51a470946aae036d2b163f85adcef10a6343246a

SHA512
441654be8d2f49ae98d60c9a71f903d5bc861fa3c61806f78c93ed04cce1c9e1efa75961813c11119b1e1db8b181aa237e4ae0cb24fa8a9f1a7d2590229c98fc

Download Submit
\Users\Admin\AppData\Local\Avywuixyxmexxtr.exe

Filesize
744KB

MD5
7f3cc059ffc6c11fe42695e5f19553ab

SHA1
f22555d2898e3486b2c628a2e523657f5fbbe475

SHA256
b4c05e0e065058ae79d3ce9d51a470946aae036d2b163f85adcef10a6343246a

SHA512
441654be8d2f49ae98d60c9a71f903d5bc861fa3c61806f78c93ed04cce1c9e1efa75961813c11119b1e1db8b181aa237e4ae0cb24fa8a9f1a7d2590229c98fc

Download Submit
\Users\Admin\AppData\Local\Avywuixyxmexxtr.exe

Filesize
744KB

MD5
7f3cc059ffc6c11fe42695e5f19553ab

SHA1
f22555d2898e3486b2c628a2e523657f5fbbe475

SHA256
b4c05e0e065058ae79d3ce9d51a470946aae036d2b163f85adcef10a6343246a

SHA512
441654be8d2f49ae98d60c9a71f903d5bc861fa3c61806f78c93ed04cce1c9e1efa75961813c11119b1e1db8b181aa237e4ae0cb24fa8a9f1a7d2590229c98fc

Download Submit
memory/1152-65-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/1152-61-0x0000000000000000-mapping.dmp

Download
memory/1152-63-0x00000000002A5000-0x00000000002A7000-memory.dmp

Filesize
8KB

Download
memory/1152-76-0x00000000002A5000-0x00000000002A7000-memory.dmp

Filesize
8KB

Download
memory/1444-54-0x0000000001FC5000-0x0000000001FC7000-memory.dmp

Filesize
8KB

Download
memory/1444-56-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/1444-55-0x0000000075ED1000-0x0000000075ED3000-memory.dmp

Filesize
8KB

Download
memory/2032-69-0x0000000000000000-mapping.dmp

Download
memory/2032-71-0x0000000000585000-0x0000000000587000-memory.dmp

Filesize
8KB

Download
memory/2032-73-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/2032-77-0x0000000000585000-0x0000000000587000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads