21efb1da8621c4e7d521a10d7dc3126bf9f6fd66a5362d969d8b8b1835d0c8e3

Analysis

max time kernel
149s
max time network
151s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
26/03/2024, 17:29

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General

Target

2024-03-26_45839bd83f62f5e00b912323aedeb992_cryptolocker.exe
Size

51KB
MD5

45839bd83f62f5e00b912323aedeb992
SHA1

960b293fcbd7da2cac34b228072cfeee5dfde933
SHA256

21efb1da8621c4e7d521a10d7dc3126bf9f6fd66a5362d969d8b8b1835d0c8e3
SHA512

b86feec17bddf733d7aec70ac203724e65e86fa70d15f1327c82aed02c725c1d5a8092a785dc4ff10de64524c773ddff3fa8a0cbe8850707dfde9834ff8126e6
SSDEEP

768:bIDOw9UiaCHfjnE0Sf88AvvP1oghYvm9/6D8jnPxyV4tFVgQ4Ij:bIDOw9a0Dwo3P1ojvUSD4PRtFVgPc

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x0008000000012252-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2248	lossy.exe

Loads dropped DLL 1 IoCs

pid	Process
1240	2024-03-26_45839bd83f62f5e00b912323aedeb992_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 1240 wrote to memory of 2248	1240	2024-03-26_45839bd83f62f5e00b912323aedeb992_cryptolocker.exe	28
PID 1240 wrote to memory of 2248	1240	2024-03-26_45839bd83f62f5e00b912323aedeb992_cryptolocker.exe	28
PID 1240 wrote to memory of 2248	1240	2024-03-26_45839bd83f62f5e00b912323aedeb992_cryptolocker.exe	28
PID 1240 wrote to memory of 2248	1240	2024-03-26_45839bd83f62f5e00b912323aedeb992_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-26_45839bd83f62f5e00b912323aedeb992_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-26_45839bd83f62f5e00b912323aedeb992_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1240
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:2248

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\lossy.exe

Filesize
52KB

MD5
31429e1be54df82cd27932138924a72d

SHA1
ea8b1f5db586ceca84dff56994815605c44abdba

SHA256
e1b7d18ed18b95c6034bfdfe4191dcbdfa413c059124e35534f647ad8f19b058

SHA512
0b6175bf5161eeb7f663d465af8e716ea254a5a7ed824495bc894bd7b9b35811c8aa03c57f49f59e9e4f8f524eccceab44f98e232c3e014288b7e1f5edd195d5

Download Submit
memory/1240-0-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/1240-2-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/1240-1-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/2248-15-0x0000000000350000-0x0000000000356000-memory.dmp

Filesize
24KB

Download
memory/2248-17-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download