c2b1487ff0cae649a5eb3fc0c0fafc9a8188ca0de838e045cebd81b90637ed7f

Analysis

max time kernel
132s
max time network
142s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
06/03/2024, 05:45

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General

Target

2024-03-06_425b94b806b9d7c8cf51996942cd664f_cryptolocker.exe
Size

42KB
MD5

425b94b806b9d7c8cf51996942cd664f
SHA1

fccc120ed590521bdfd4cc9723a02c1ac724bbc0
SHA256

c2b1487ff0cae649a5eb3fc0c0fafc9a8188ca0de838e045cebd81b90637ed7f
SHA512

438b9b0deeeaedc5636c536a9a4b90eb92451fdf3756fc8657a8a67f8774bc2365a97fd702c4ccb656fd949f99010c9c3bd7cd6e1e6f45a9891e206294179341
SSDEEP

768:b7o/2n1TCraU6GD1a4X0WcO+wMVm+slAMphej6J:bc/y2lkF0+Bex

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b000000012248-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2328	rewok.exe

Loads dropped DLL 1 IoCs

pid	Process
1728	2024-03-06_425b94b806b9d7c8cf51996942cd664f_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
1728	2024-03-06_425b94b806b9d7c8cf51996942cd664f_cryptolocker.exe
2328	rewok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1728 wrote to memory of 2328	1728	2024-03-06_425b94b806b9d7c8cf51996942cd664f_cryptolocker.exe	28
PID 1728 wrote to memory of 2328	1728	2024-03-06_425b94b806b9d7c8cf51996942cd664f_cryptolocker.exe	28
PID 1728 wrote to memory of 2328	1728	2024-03-06_425b94b806b9d7c8cf51996942cd664f_cryptolocker.exe	28
PID 1728 wrote to memory of 2328	1728	2024-03-06_425b94b806b9d7c8cf51996942cd664f_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-06_425b94b806b9d7c8cf51996942cd664f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-06_425b94b806b9d7c8cf51996942cd664f_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1728
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of UnmapMainImage
  PID:2328

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\rewok.exe

Filesize
43KB

MD5
3580ee487f626bfca527aeb6c8e0c1a7

SHA1
96c2ce3803c9d4e392f8246c1368ac7b0d3e95e8

SHA256
a59474c638947c05f23d546f6725b6db8fee8b31083161fa52d0b67fe189fbe8

SHA512
06e1c38d15291df780ef8c0cebc0eae0001b9e095be239491c5bbddab4433448232d9c4b37111d35e562bb4806cddd293b628239ccd94f15cb58e0c4e1aeb94a

Download Submit
memory/1728-0-0x0000000000260000-0x0000000000266000-memory.dmp

Filesize
24KB

Download
memory/1728-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1728-2-0x0000000000260000-0x0000000000266000-memory.dmp

Filesize
24KB

Download
memory/2328-23-0x0000000000360000-0x0000000000366000-memory.dmp

Filesize
24KB

Download