8834d0f4ee9bc5253dba095e5d27b458104d23d00aae0f9573fe34124e0b9f24

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
03/02/2024, 17:23

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General

Target

2024-02-03_2241fdbd997698f4dd5d560623d9a681_cryptolocker.exe
Size

68KB
MD5

2241fdbd997698f4dd5d560623d9a681
SHA1

b19a278c31aaa19aab3c940b5540194bcd819068
SHA256

8834d0f4ee9bc5253dba095e5d27b458104d23d00aae0f9573fe34124e0b9f24
SHA512

f953e0855e01f1f34cbf5b5e10a2fe7094eb3078d3baf096779366439419b1411bd65f463486dd9e9148b31995fbbc93ac12d4d40c52f295a8daaf3f108f459c
SSDEEP

1536:Dk/xY0sllyGQMOtEvwDpjwycDtKkQZQRKb61vSbgZ3QzNKUk:DW60sllyWOtEvwDpjwF85m

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/1688-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000900000001447e-11.dat	CryptoLocker_rule2
behavioral1/memory/1688-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2548-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/1688-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000900000001447e-11.dat	CryptoLocker_set1
behavioral1/memory/1688-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2548-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2548	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1688	2024-02-03_2241fdbd997698f4dd5d560623d9a681_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 1688 wrote to memory of 2548	1688	2024-02-03_2241fdbd997698f4dd5d560623d9a681_cryptolocker.exe	28
PID 1688 wrote to memory of 2548	1688	2024-02-03_2241fdbd997698f4dd5d560623d9a681_cryptolocker.exe	28
PID 1688 wrote to memory of 2548	1688	2024-02-03_2241fdbd997698f4dd5d560623d9a681_cryptolocker.exe	28
PID 1688 wrote to memory of 2548	1688	2024-02-03_2241fdbd997698f4dd5d560623d9a681_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-03_2241fdbd997698f4dd5d560623d9a681_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-03_2241fdbd997698f4dd5d560623d9a681_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1688
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2548

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\asih.exe

Filesize
68KB

MD5
367323bbfbe48f63d87ea4f09c2dd0ef

SHA1
fc600cb99aad7b43cfd778259be799bcc49ff09b

SHA256
1dad1c6f5e15b255fe2a74cb5206ae89e7a5de49f76df0295e778be09067754a

SHA512
b0805b9903db7cad68f9e62499fa780a3c2a7114f7aca802e0ba6867a9c277e48c2c50cb5b6c08e4d7e003ab8c48b19ab62b6e68d66b66c26f9392b2afe5054a

Download Submit
memory/1688-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/1688-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1688-3-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1688-2-0x0000000000480000-0x0000000000486000-memory.dmp

Filesize
24KB

Download
memory/1688-15-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2548-16-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2548-18-0x00000000004A0000-0x00000000004A6000-memory.dmp

Filesize
24KB

Download
memory/2548-20-0x0000000000340000-0x0000000000346000-memory.dmp

Filesize
24KB

Download