b4bff1381c0e4823bf4feab6361912c96d72e7b969295be3a026ddeb8c50cbb3

Analysis

max time kernel
170s
max time network
181s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
09/03/2024, 14:37

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General

Target

2024-03-09_7557444da51109f280e227112ee1adca_cryptolocker.exe
Size

41KB
MD5

7557444da51109f280e227112ee1adca
SHA1

edfb186310ce6ec48f94d3639ba76797a5b96fd4
SHA256

b4bff1381c0e4823bf4feab6361912c96d72e7b969295be3a026ddeb8c50cbb3
SHA512

1d7317fdc5ee9c7a21e27c45cf8a7ae6f37dc6e043f26a9678baf54019debe319dc49d2a974bf477db2d8e22dbad9262c18d0f941e2207ac5b6a0f15338c25a1
SSDEEP

768:bIDOw9UiaCHfjnE0Sf88AvvP1oghYvm9/6Dy8POKi:bIDOw9a0Dwo3P1ojvUSDhE

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b000000012267-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
3024	lossy.exe

Loads dropped DLL 1 IoCs

pid	Process
2892	2024-03-09_7557444da51109f280e227112ee1adca_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 2892 wrote to memory of 3024	2892	2024-03-09_7557444da51109f280e227112ee1adca_cryptolocker.exe	27
PID 2892 wrote to memory of 3024	2892	2024-03-09_7557444da51109f280e227112ee1adca_cryptolocker.exe	27
PID 2892 wrote to memory of 3024	2892	2024-03-09_7557444da51109f280e227112ee1adca_cryptolocker.exe	27
PID 2892 wrote to memory of 3024	2892	2024-03-09_7557444da51109f280e227112ee1adca_cryptolocker.exe	27

C:\Users\Admin\AppData\Local\Temp\2024-03-09_7557444da51109f280e227112ee1adca_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-09_7557444da51109f280e227112ee1adca_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2892
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:3024

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
41KB

MD5
fcd803a0d1caf3ec03ab8dd1c262acc4

SHA1
a96448359ee0fc4d428025eadb7c92e1a0a061be

SHA256
1a8420497f2531f705acbefebc8876b04e48980b0e391e3d0bb716e76bcc9fd6

SHA512
e37f791b40a91ce188369ead5c96880b3b06533d12924b3f927ef75c4ba83893119dfa03d64b2f611188d3299101f49c0a7b19de4ff2a00087b8f620789f1473

Download Submit
memory/2892-0-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2892-1-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2892-2-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/3024-15-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download
memory/3024-17-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download