e7eef58f9ee2263dcee5a00f9d4bf3413100dfe600900099f1bfa18cb7852490

Analysis

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

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
28/03/2024, 11:31

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General

Target

2024-03-28_27a738b4f95c166ac8f7582cc164ccb7_cryptolocker.exe
Size

101KB
MD5

27a738b4f95c166ac8f7582cc164ccb7
SHA1

f778f916709e35dabd8c1c6716aca94c83aed2aa
SHA256

e7eef58f9ee2263dcee5a00f9d4bf3413100dfe600900099f1bfa18cb7852490
SHA512

1e753586b296bd255838684111b2a026414bc9a9894e7ce851e9ba93ccfb21605c834b084d3aee8d7bd4bee73c40eca8f49d45d42b607b01eccd12887a94c320
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjQGYQbN/PKwNgpQbCJjN3z:V6a+pOtEvwDpjtzO

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000c000000012254-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000c000000012254-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
1720	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1800	2024-03-28_27a738b4f95c166ac8f7582cc164ccb7_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 1800 wrote to memory of 1720	1800	2024-03-28_27a738b4f95c166ac8f7582cc164ccb7_cryptolocker.exe	28
PID 1800 wrote to memory of 1720	1800	2024-03-28_27a738b4f95c166ac8f7582cc164ccb7_cryptolocker.exe	28
PID 1800 wrote to memory of 1720	1800	2024-03-28_27a738b4f95c166ac8f7582cc164ccb7_cryptolocker.exe	28
PID 1800 wrote to memory of 1720	1800	2024-03-28_27a738b4f95c166ac8f7582cc164ccb7_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-28_27a738b4f95c166ac8f7582cc164ccb7_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-28_27a738b4f95c166ac8f7582cc164ccb7_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1800
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1720

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
101KB

MD5
27a3aae4ae8ad6a50e758771525db344

SHA1
21ba90a6628eeb48a20a51068f094421d9de2313

SHA256
95b044e5de5dd7ed242edd8bd37816802fdb699fed2a936f6d8805570290fb8e

SHA512
6dd0b27ddbabef81418034f327a7344a4bda48039ba07372ae7d64f35c1e9fc9e4667bb4d19c1f9c926379080f88ea70d5f134598929c16e2806bb02983e2799

Download Submit
memory/1720-15-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/1720-22-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1800-0-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download
memory/1800-1-0x0000000000350000-0x0000000000356000-memory.dmp

Filesize
24KB

Download
memory/1800-8-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download