fc5a1a6f212f3e87bc3e0d3fb11e490522732aa9ec45e9ebbb30c0eaa5ceef0b

Analysis

max time kernel
150s
max time network
150s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
04-05-2024 04:50

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General

Target

2024-05-04_977eda5ab2e9bf2dc47f4357ecf194ba_cryptolocker.exe
Size

70KB
MD5

977eda5ab2e9bf2dc47f4357ecf194ba
SHA1

be89b4d2599651897410f4bc356aa5164a0590e4
SHA256

fc5a1a6f212f3e87bc3e0d3fb11e490522732aa9ec45e9ebbb30c0eaa5ceef0b
SHA512

dbcc5327c43783a7f40f3586e206b93f678bbd997b93c3d87100dd49ceb20c12f10d587945532127b7511ebe5f4fd888dc778c77e946952dc52cd2fd88fece51
SSDEEP

768:vQz7yVEhs9+js1SQtOOtEvwDpjz9+4ZPsED3VK2+ZtyOjgO4r9vFAg2rq2g1B/RI:vj+jsMQMOtEvwDpj5HZYTjipvF24Q

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b000000014b27-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000b000000014b27-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
3020	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
1948	2024-05-04_977eda5ab2e9bf2dc47f4357ecf194ba_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 1948 wrote to memory of 3020	1948	2024-05-04_977eda5ab2e9bf2dc47f4357ecf194ba_cryptolocker.exe	28
PID 1948 wrote to memory of 3020	1948	2024-05-04_977eda5ab2e9bf2dc47f4357ecf194ba_cryptolocker.exe	28
PID 1948 wrote to memory of 3020	1948	2024-05-04_977eda5ab2e9bf2dc47f4357ecf194ba_cryptolocker.exe	28
PID 1948 wrote to memory of 3020	1948	2024-05-04_977eda5ab2e9bf2dc47f4357ecf194ba_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-04_977eda5ab2e9bf2dc47f4357ecf194ba_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-04_977eda5ab2e9bf2dc47f4357ecf194ba_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1948
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:3020

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
70KB

MD5
79398f67bd95e13202a4b24edd13f06c

SHA1
eb0300ac50cf70cb4290a525d0c61122cd4e7a65

SHA256
823edd4b968441385e077147e6f21bfa6449327ca3781a7d37520a85bc6baa4a

SHA512
877557beeb5d8c6f03b179694d0ff3803b2aff625d340ae9573209b0be740e96a9f86fc98502433f29d8a3ccd3df0f049486e705bc7cfafaca66f8dfd8924f33

Download Submit
memory/1948-0-0x00000000001C0000-0x00000000001C6000-memory.dmp

Filesize
24KB

Download
memory/1948-2-0x00000000003F0000-0x00000000003F6000-memory.dmp

Filesize
24KB

Download
memory/1948-1-0x00000000001C0000-0x00000000001C6000-memory.dmp

Filesize
24KB

Download
memory/3020-15-0x0000000000370000-0x0000000000376000-memory.dmp

Filesize
24KB

Download
memory/3020-22-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download