0039cd33a929b9ceec333fdf58fca229da68a3208f6597f6b9c249fc74c359fb

Analysis

max time kernel
132s
max time network
145s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
19-03-2024 23:42

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General

Target

2024-03-19_bf9659aac1b4123b26c6cc974f077375_cryptolocker.exe
Size

77KB
MD5

bf9659aac1b4123b26c6cc974f077375
SHA1

0669c74483c36671c75946467e884a9fc5cdacff
SHA256

0039cd33a929b9ceec333fdf58fca229da68a3208f6597f6b9c249fc74c359fb
SHA512

23234e114c6f94dc915c52ed4e5d9acac31b71de95b9e9be46b6d059660b514013d85c1c979ebc53f80b20dfd197efc8072f5e95682a686fcd2998453fcb79fb
SSDEEP

1536:ZzFbxmLPWQMOtEvwDpj386Sj/WprgJN6tZdOyJ3KEWTmO7:ZVxkGOtEvwDpjcaxM

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000c0000000122ac-11.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
1296	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
1668	2024-03-19_bf9659aac1b4123b26c6cc974f077375_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 1668 wrote to memory of 1296	1668	2024-03-19_bf9659aac1b4123b26c6cc974f077375_cryptolocker.exe	28
PID 1668 wrote to memory of 1296	1668	2024-03-19_bf9659aac1b4123b26c6cc974f077375_cryptolocker.exe	28
PID 1668 wrote to memory of 1296	1668	2024-03-19_bf9659aac1b4123b26c6cc974f077375_cryptolocker.exe	28
PID 1668 wrote to memory of 1296	1668	2024-03-19_bf9659aac1b4123b26c6cc974f077375_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-19_bf9659aac1b4123b26c6cc974f077375_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-19_bf9659aac1b4123b26c6cc974f077375_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1668
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:1296

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\misid.exe

Filesize
77KB

MD5
3a957694b7d9e08dda40ce7da4f0601e

SHA1
d1607ee21f57cb43957b4fa92849411ce9e84f1d

SHA256
55c8b34cac5fbf6d769da34d7cff34ea4edcfd29d6e012154b87f03eabc8cd11

SHA512
d8b8948b259e9f83aac8aa7cbbb0e88d323aa56c121113d4ca9979f959a5b7362f17ca9141d0b7762fabe1c1306733aaaa85ba18f70f6bbd50690bd151d06b51

Download Submit
memory/1296-17-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/1296-16-0x0000000000200000-0x0000000000206000-memory.dmp

Filesize
24KB

Download
memory/1296-24-0x00000000001C0000-0x00000000001C6000-memory.dmp

Filesize
24KB

Download
memory/1668-0-0x0000000000230000-0x0000000000233000-memory.dmp

Filesize
12KB

Download
memory/1668-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1668-3-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1668-2-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download