a86c4767fc1c49b6fb7bc1aec8cac3998277dc4cfc47190ab271568d05942a13

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
19-02-2024 04:51

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General

Target

2024-02-19_738868e4fd67be4c00698bdf9b4983bd_cryptolocker.exe
Size

54KB
MD5

738868e4fd67be4c00698bdf9b4983bd
SHA1

8eee0021374cfabb1efbc6925ebfbf354f66ac1b
SHA256

a86c4767fc1c49b6fb7bc1aec8cac3998277dc4cfc47190ab271568d05942a13
SHA512

1f9fd91153fa4aefd9649b82f3cce0f70e421afc4b4f5a02a686b86dc5552759ba9da459db63452897c9ac065ecb7b7586fb6df40f9a5bec07a8b8c4f90409e6
SSDEEP

1536:X6QFElP6n+gJBMOtEvwDpjBtE1yILJ0V3:X6a+BOtEvwDpjBOE

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x0009000000014abe-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x0009000000014abe-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
1940	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1276	2024-02-19_738868e4fd67be4c00698bdf9b4983bd_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 1276 wrote to memory of 1940	1276	2024-02-19_738868e4fd67be4c00698bdf9b4983bd_cryptolocker.exe	28
PID 1276 wrote to memory of 1940	1276	2024-02-19_738868e4fd67be4c00698bdf9b4983bd_cryptolocker.exe	28
PID 1276 wrote to memory of 1940	1276	2024-02-19_738868e4fd67be4c00698bdf9b4983bd_cryptolocker.exe	28
PID 1276 wrote to memory of 1940	1276	2024-02-19_738868e4fd67be4c00698bdf9b4983bd_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-19_738868e4fd67be4c00698bdf9b4983bd_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-19_738868e4fd67be4c00698bdf9b4983bd_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1276
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1940

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
55KB

MD5
c58b47db2d43d34fe37463c48da4d2cb

SHA1
fce59744a15e8d77d98618da220bbd1f97dc8cf5

SHA256
c74124619a8c97a9eb2e3a059177b663fc23b9a000c75ee71635e5189bc9daf9

SHA512
710587aeb955932a3fd058d361411fa125242c76578cfa9edacada7b54fef3f45cbb8cc5ca27f9eb5d16f412dd882f5bcd78fa359f572c42dbf3fa2a586a1344

Download Submit
memory/1276-0-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1276-1-0x0000000000380000-0x0000000000386000-memory.dmp

Filesize
24KB

Download
memory/1276-8-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1940-15-0x00000000004A0000-0x00000000004A6000-memory.dmp

Filesize
24KB

Download
memory/1940-17-0x0000000000360000-0x0000000000366000-memory.dmp

Filesize
24KB

Download