d59748d0704012743d639589ed01683376b2e38c834e4f7b3e35a0cc10d8e7ae

Analysis

max time kernel
119s
max time network
124s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
29-05-2024 15:37

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General

Target

2024-05-29_8c818a7f271261438a5fecc5efe7b910_cryptolocker.exe
Size

31KB
MD5

8c818a7f271261438a5fecc5efe7b910
SHA1

6bdb9d103d196b9de6e7928eed31a8b8e8acacdb
SHA256

d59748d0704012743d639589ed01683376b2e38c834e4f7b3e35a0cc10d8e7ae
SHA512

d6114c95d94aa83fe76b757e63648f9df426aa8e22817292bcdd7eb189c85d2768ae415d752dedfd742af558d494d3b023d56e2437c0121011a7a5f22ac5b1cf
SSDEEP

384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zznum+U8Ss87vhD0:b/yC4GyNM01GuQMNXum+NSnD0

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000d0000000122d1-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
1404	retln.exe

Loads dropped DLL 1 IoCs

pid	Process
2696	2024-05-29_8c818a7f271261438a5fecc5efe7b910_cryptolocker.exe

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
2696	2024-05-29_8c818a7f271261438a5fecc5efe7b910_cryptolocker.exe
1404	retln.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2696 wrote to memory of 1404	2696	2024-05-29_8c818a7f271261438a5fecc5efe7b910_cryptolocker.exe	28
PID 2696 wrote to memory of 1404	2696	2024-05-29_8c818a7f271261438a5fecc5efe7b910_cryptolocker.exe	28
PID 2696 wrote to memory of 1404	2696	2024-05-29_8c818a7f271261438a5fecc5efe7b910_cryptolocker.exe	28
PID 2696 wrote to memory of 1404	2696	2024-05-29_8c818a7f271261438a5fecc5efe7b910_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-29_8c818a7f271261438a5fecc5efe7b910_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-29_8c818a7f271261438a5fecc5efe7b910_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2696
- 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:1404

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\retln.exe

Filesize
31KB

MD5
2cc419d188f3bd80bc3f169b4d3c9f20

SHA1
cfd310e724c65c9e0061d450af9643cd98ce2e94

SHA256
cc930a5c4e23edbc89a7a9f64f2236bd06cc2a102a2e8476da0579bbe377bd3d

SHA512
867c6ed018ba63e2fb1942e0081eaa6d07ebe4e7484da295f23bbe49c13cca507f3f8f17cf80e6be4c2645573ebb8447bd737def1369f51c1546e4f25b5e673f

Download Submit
memory/1404-16-0x00000000002E0000-0x00000000002E6000-memory.dmp

Filesize
24KB

Download
memory/2696-0-0x0000000000330000-0x0000000000336000-memory.dmp

Filesize
24KB

Download
memory/2696-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2696-8-0x0000000000330000-0x0000000000336000-memory.dmp

Filesize
24KB

Download