91144597fac810a2a07fbb9a9ae9f28985d9cab7e4d1dd63756fb6fe80977d05

Analysis

max time kernel
3s
max time network
71s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
14/03/2024, 20:30

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General

Target

2024-03-14_601ae5e578b2e52febb898ffe1cc94c3_cryptolocker.exe
Size

40KB
MD5

601ae5e578b2e52febb898ffe1cc94c3
SHA1

13ade15c74fc1f4bee2abc104f9d7edaba05a786
SHA256

91144597fac810a2a07fbb9a9ae9f28985d9cab7e4d1dd63756fb6fe80977d05
SHA512

3a5184c7634ff702d18e08acdd2c027c6cf134fb9eeb2de4bff1015a4297bafdde9c5f870402722c7ed370948e7e8f0f55cb0491d330feb5d588e6da743853eb
SSDEEP

384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zzzcYgUPSznHzl6AJvDSuYlxujsFwY:b/yC4GyNM01GuQMNXw2PSjHPbSuYlaJY

Score

9^/10

discovery

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x0009000000014120-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2348	retln.exe

Loads dropped DLL 1 IoCs

pid	Process
2184	2024-03-14_601ae5e578b2e52febb898ffe1cc94c3_cryptolocker.exe

Creates a large amount of network flows 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Discovery
T1046
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
2184	2024-03-14_601ae5e578b2e52febb898ffe1cc94c3_cryptolocker.exe
2348	retln.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2184 wrote to memory of 2348	2184	2024-03-14_601ae5e578b2e52febb898ffe1cc94c3_cryptolocker.exe	28
PID 2184 wrote to memory of 2348	2184	2024-03-14_601ae5e578b2e52febb898ffe1cc94c3_cryptolocker.exe	28
PID 2184 wrote to memory of 2348	2184	2024-03-14_601ae5e578b2e52febb898ffe1cc94c3_cryptolocker.exe	28
PID 2184 wrote to memory of 2348	2184	2024-03-14_601ae5e578b2e52febb898ffe1cc94c3_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-14_601ae5e578b2e52febb898ffe1cc94c3_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-14_601ae5e578b2e52febb898ffe1cc94c3_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2184
- C:\Users\Admin\AppData\Local\Temp\retln.exe
  "C:\Users\Admin\AppData\Local\Temp\retln.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of UnmapMainImage
  PID:2348

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Discovery

T1046

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\Users\Admin\AppData\Local\Temp\retln.exe

Filesize
40KB

MD5
40a7cf45647eab8958fe72bbd6cede81

SHA1
9014e5b287510cde2839a44148b1f6adba48641f

SHA256
8504ff3bf2269fc95f2c11e561f090f2c33401e34ab6c64e31637aeaecac933c

SHA512
317ddb7358dae7c6ae932f1fa90d70f75061ae5131c6e74f9e35f787e9928db3b4bfc7ca2127445a764b73632e12bc8df90df0b3afdc45080167f1416f630962

Download Submit
memory/2184-0-0x0000000000210000-0x0000000000216000-memory.dmp

Filesize
24KB

Download
memory/2184-1-0x0000000000210000-0x0000000000216000-memory.dmp

Filesize
24KB

Download
memory/2184-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2348-19-0x00000000003E0000-0x00000000003E6000-memory.dmp

Filesize
24KB

Download