3a8cdecf7a0cf33ea3c70474bd5c3244b9ded3e9122767c431f15b71f217e864

Analysis

max time kernel
150s
max time network
150s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
04-05-2024 19:14

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General

Target

2024-05-04_8b33907027f1c386991af8f90637cf15_cryptolocker.exe
Size

61KB
MD5

8b33907027f1c386991af8f90637cf15
SHA1

be34dccbd8abcd735c44452c691d960b43d0d1b7
SHA256

3a8cdecf7a0cf33ea3c70474bd5c3244b9ded3e9122767c431f15b71f217e864
SHA512

a344c5537849cdd22de9008d7011820c5f6b53f47c5b69a41e491b10cfa941f8d4768931692c0765d1908ae90cea345fe7ef8df07d1e838f687cfd72446f9b32
SSDEEP

768:3Uz7yVEhs9+Hs1SQtOOtEvwDpjO9+4hdCY8EQMjpi/Wpi3B3URiLqCyLuAx8XG9c:3P+HsMQMOtEvwDpjoHy7B3g9CWuAxWRT

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/1848-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b000000014abe-11.dat	CryptoLocker_rule2
behavioral1/memory/1848-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2884-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2884-26-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/1848-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000b000000014abe-11.dat	CryptoLocker_set1
behavioral1/memory/1848-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2884-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2884-26-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2884	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
1848	2024-05-04_8b33907027f1c386991af8f90637cf15_cryptolocker.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1848 wrote to memory of 2884	1848	2024-05-04_8b33907027f1c386991af8f90637cf15_cryptolocker.exe	28
PID 1848 wrote to memory of 2884	1848	2024-05-04_8b33907027f1c386991af8f90637cf15_cryptolocker.exe	28
PID 1848 wrote to memory of 2884	1848	2024-05-04_8b33907027f1c386991af8f90637cf15_cryptolocker.exe	28
PID 1848 wrote to memory of 2884	1848	2024-05-04_8b33907027f1c386991af8f90637cf15_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-04_8b33907027f1c386991af8f90637cf15_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-04_8b33907027f1c386991af8f90637cf15_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1848
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:2884

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\misid.exe

Filesize
61KB

MD5
ad91d3626b05634f93bf6d4fea21f0ab

SHA1
48d3bea571207b5de8590b329e7dc49f66f3774b

SHA256
e2b603f60f48af56c27f174e6fb0a286c19de7adcd542269963625e45d830ba1

SHA512
ae272198bca6b90a96978134427e51bfa893282a62eec2ddd0e6ad1445b285e84e5f49790de0c4dce17c6f9870d144ef4a6032de8fc9dcdabaf456ef6179a080

Download Submit
memory/1848-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/1848-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1848-2-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/1848-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1848-15-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2884-16-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2884-25-0x0000000000440000-0x0000000000446000-memory.dmp

Filesize
24KB

Download
memory/2884-18-0x0000000000480000-0x0000000000486000-memory.dmp

Filesize
24KB

Download
memory/2884-26-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download