a5a03d965e5c5466d9a8da06c66c0d3d03b8d529f90d9aee2a971ded2d1a1344

Analysis

max time kernel
148s
max time network
151s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
25-02-2024 07:24

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General

Target

2024-02-25_09f23d405166656b25ec9e3bc84f3c21_cryptolocker.exe
Size

58KB
MD5

09f23d405166656b25ec9e3bc84f3c21
SHA1

d06311bbefbbec2ba06be3b59f167a0f52cee5d6
SHA256

a5a03d965e5c5466d9a8da06c66c0d3d03b8d529f90d9aee2a971ded2d1a1344
SHA512

d261b65a58b13637186641bb0b29c8c7a1d45c30e6485870e275e370114a148e1f8b25c90978a2de4fc55e79b4b6704c53dc9e492f749b62da578dda78d9714c
SSDEEP

768:V6LsoEEeegiZPvEhHSG+gDYQtOOtEvwDpj/MLa5VccPt547/q6sV:V6QFElP6n+gMQMOtEvwDpjyaLccVCbHC

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000a000000012240-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000a000000012240-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
3052	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2908	2024-02-25_09f23d405166656b25ec9e3bc84f3c21_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 2908 wrote to memory of 3052	2908	2024-02-25_09f23d405166656b25ec9e3bc84f3c21_cryptolocker.exe	28
PID 2908 wrote to memory of 3052	2908	2024-02-25_09f23d405166656b25ec9e3bc84f3c21_cryptolocker.exe	28
PID 2908 wrote to memory of 3052	2908	2024-02-25_09f23d405166656b25ec9e3bc84f3c21_cryptolocker.exe	28
PID 2908 wrote to memory of 3052	2908	2024-02-25_09f23d405166656b25ec9e3bc84f3c21_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-25_09f23d405166656b25ec9e3bc84f3c21_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-25_09f23d405166656b25ec9e3bc84f3c21_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2908
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3052

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
58KB

MD5
dc55982ba438e84bae18b115ecd694d3

SHA1
20f4286469b57ceba5c8ef78ad2b7a8c0473e709

SHA256
87ae6a2573f631b4118a79685a541cb5bc0a94c8542ec5c6cbab39833a668a37

SHA512
1b2508dacea15acc66416c44a3892564b5f6b315aced0c34300db3712a01f5d46a67983fe5f67e57b55f1686b63014e445c1175a21aa034b528819e9097c4caf

Download Submit
memory/2908-0-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2908-1-0x0000000000330000-0x0000000000336000-memory.dmp

Filesize
24KB

Download
memory/2908-4-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/3052-16-0x00000000004B0000-0x00000000004B6000-memory.dmp

Filesize
24KB

Download
memory/3052-15-0x0000000000440000-0x0000000000446000-memory.dmp

Filesize
24KB

Download