cryptolocker | 7fac039c61c137a2e71a9224a2fcb729d25cd5aa8c3b135f1aaa7cb69044e18e

General

Target

7fac039c61c137a2e71a9224a2fcb729d25cd5aa8c3b135f1aaa7cb69044e18e.exe
Size

1009KB
MD5

60a5f960e38af6942569af03492e4086
SHA1

e1a8ad4a82f2fceadb9d1fd46168030f8047c092
SHA256

7fac039c61c137a2e71a9224a2fcb729d25cd5aa8c3b135f1aaa7cb69044e18e
SHA512

641172cf4bec42cfcf78512fa68bfb731045ff70049f7212af412ed91881416256c3fb390cb85c744ce437580758424dfbfde4db62cbcdfd0a103c917247352a
SSDEEP

12288:0BAlraFSO2vpEnhqg9GuF+lrnBRMQdod5rL+/yfY3C2ww6WGpVaL7VZ:0iFRahqgS9FyfYTr6XpVaLb

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

1532 Avywuixyxmexxtr.exe
2020 Avywuixyxmexxtr.exe
Deletes itself 1 IoCs

Processes:

Avywuixyxmexxtr.exe

pid process

1532 Avywuixyxmexxtr.exe

pid	process
1532	Avywuixyxmexxtr.exe
2020	Avywuixyxmexxtr.exe

pid	process
1532	Avywuixyxmexxtr.exe

Loads dropped DLL 2 IoCs

Processes:

7fac039c61c137a2e71a9224a2fcb729d25cd5aa8c3b135f1aaa7cb69044e18e.exe

pid	process
1108	7fac039c61c137a2e71a9224a2fcb729d25cd5aa8c3b135f1aaa7cb69044e18e.exe
1108	7fac039c61c137a2e71a9224a2fcb729d25cd5aa8c3b135f1aaa7cb69044e18e.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\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
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

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

7fac039c61c137a2e71a9224a2fcb729d25cd5aa8c3b135f1aaa7cb69044e18e.exeAvywuixyxmexxtr.exe

description	pid	process	target process
PID 1108 wrote to memory of 1532	1108	7fac039c61c137a2e71a9224a2fcb729d25cd5aa8c3b135f1aaa7cb69044e18e.exe	Avywuixyxmexxtr.exe
PID 1108 wrote to memory of 1532	1108	7fac039c61c137a2e71a9224a2fcb729d25cd5aa8c3b135f1aaa7cb69044e18e.exe	Avywuixyxmexxtr.exe
PID 1108 wrote to memory of 1532	1108	7fac039c61c137a2e71a9224a2fcb729d25cd5aa8c3b135f1aaa7cb69044e18e.exe	Avywuixyxmexxtr.exe
PID 1108 wrote to memory of 1532	1108	7fac039c61c137a2e71a9224a2fcb729d25cd5aa8c3b135f1aaa7cb69044e18e.exe	Avywuixyxmexxtr.exe
PID 1532 wrote to memory of 2020	1532	Avywuixyxmexxtr.exe	Avywuixyxmexxtr.exe
PID 1532 wrote to memory of 2020	1532	Avywuixyxmexxtr.exe	Avywuixyxmexxtr.exe
PID 1532 wrote to memory of 2020	1532	Avywuixyxmexxtr.exe	Avywuixyxmexxtr.exe
PID 1532 wrote to memory of 2020	1532	Avywuixyxmexxtr.exe	Avywuixyxmexxtr.exe

C:\Users\Admin\AppData\Local\Temp\7fac039c61c137a2e71a9224a2fcb729d25cd5aa8c3b135f1aaa7cb69044e18e.exe
"C:\Users\Admin\AppData\Local\Temp\7fac039c61c137a2e71a9224a2fcb729d25cd5aa8c3b135f1aaa7cb69044e18e.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1108
- C:\Users\Admin\AppData\Local\Avywuixyxmexxtr.exe
  "C:\Users\Admin\AppData\Local\Avywuixyxmexxtr.exe" "-rC:\Users\Admin\AppData\Local\Temp\7fac039c61c137a2e71a9224a2fcb729d25cd5aa8c3b135f1aaa7cb69044e18e.exe"
  2⤵
  - Executes dropped EXE
  - Deletes itself
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:1532
- - C:\Users\Admin\AppData\Local\Avywuixyxmexxtr.exe
    "C:\Users\Admin\AppData\Local\Avywuixyxmexxtr.exe" -w12c
    3⤵
    - Executes dropped EXE
    PID:2020

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

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Downloads

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

Filesize
1009KB

MD5
60a5f960e38af6942569af03492e4086

SHA1
e1a8ad4a82f2fceadb9d1fd46168030f8047c092

SHA256
7fac039c61c137a2e71a9224a2fcb729d25cd5aa8c3b135f1aaa7cb69044e18e

SHA512
641172cf4bec42cfcf78512fa68bfb731045ff70049f7212af412ed91881416256c3fb390cb85c744ce437580758424dfbfde4db62cbcdfd0a103c917247352a

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

Filesize
1009KB

MD5
60a5f960e38af6942569af03492e4086

SHA1
e1a8ad4a82f2fceadb9d1fd46168030f8047c092

SHA256
7fac039c61c137a2e71a9224a2fcb729d25cd5aa8c3b135f1aaa7cb69044e18e

SHA512
641172cf4bec42cfcf78512fa68bfb731045ff70049f7212af412ed91881416256c3fb390cb85c744ce437580758424dfbfde4db62cbcdfd0a103c917247352a

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

Filesize
1009KB

MD5
60a5f960e38af6942569af03492e4086

SHA1
e1a8ad4a82f2fceadb9d1fd46168030f8047c092

SHA256
7fac039c61c137a2e71a9224a2fcb729d25cd5aa8c3b135f1aaa7cb69044e18e

SHA512
641172cf4bec42cfcf78512fa68bfb731045ff70049f7212af412ed91881416256c3fb390cb85c744ce437580758424dfbfde4db62cbcdfd0a103c917247352a

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

Filesize
1009KB

MD5
60a5f960e38af6942569af03492e4086

SHA1
e1a8ad4a82f2fceadb9d1fd46168030f8047c092

SHA256
7fac039c61c137a2e71a9224a2fcb729d25cd5aa8c3b135f1aaa7cb69044e18e

SHA512
641172cf4bec42cfcf78512fa68bfb731045ff70049f7212af412ed91881416256c3fb390cb85c744ce437580758424dfbfde4db62cbcdfd0a103c917247352a

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

Filesize
1009KB

MD5
60a5f960e38af6942569af03492e4086

SHA1
e1a8ad4a82f2fceadb9d1fd46168030f8047c092

SHA256
7fac039c61c137a2e71a9224a2fcb729d25cd5aa8c3b135f1aaa7cb69044e18e

SHA512
641172cf4bec42cfcf78512fa68bfb731045ff70049f7212af412ed91881416256c3fb390cb85c744ce437580758424dfbfde4db62cbcdfd0a103c917247352a

Download Submit
memory/1108-62-0x0000000000400000-0x000000000050D000-memory.dmp

Filesize
1.1MB

Download
memory/1108-54-0x0000000075771000-0x0000000075773000-memory.dmp

Filesize
8KB

Download
memory/1108-55-0x0000000000400000-0x000000000050D000-memory.dmp

Filesize
1.1MB

Download
memory/1532-64-0x0000000000400000-0x000000000050D000-memory.dmp

Filesize
1.1MB

Download
memory/1532-60-0x0000000000000000-mapping.dmp

Download
memory/1532-68-0x0000000000400000-0x000000000050D000-memory.dmp

Filesize
1.1MB

Download
memory/1532-76-0x0000000000400000-0x000000000050D000-memory.dmp

Filesize
1.1MB

Download
memory/2020-69-0x0000000000000000-mapping.dmp

Download
memory/2020-72-0x0000000000400000-0x000000000050D000-memory.dmp

Filesize
1.1MB

Download
memory/2020-75-0x0000000000400000-0x000000000050D000-memory.dmp

Filesize
1.1MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads