9ef300a10241eed1c6f0c875467fae2254fb2f14568b8fe71261646481a2135b

Analysis

max time kernel
149s
max time network
149s
platform
windows7_x64
resource
win7-20240419-en
resource tags

arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
submitted
02-05-2024 00:55

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General

Target

2024-05-02_8706cb78f7afbbea76258935f5cb8b5e_cryptolocker.exe
Size

41KB
MD5

8706cb78f7afbbea76258935f5cb8b5e
SHA1

d1965545b9f43dd322ba7a5a7c915420b499fce5
SHA256

9ef300a10241eed1c6f0c875467fae2254fb2f14568b8fe71261646481a2135b
SHA512

85e3949b019fa33c4a329a2aef62b020b718e56af079d785ff9a318428dd27f857bd01fdf5b1f805a06e527bb9cf859303403b99a33200a0c48cfd6c08060f65
SSDEEP

768:bCDOw9UiaKHfjnD0S16avdrQFiLjJvtAU:bCDOw9aMDooc+vAU

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/1760-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000c00000001226e-11.dat	CryptoLocker_rule2
behavioral1/memory/1760-13-0x0000000001F00000-0x0000000001F0A000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1760-16-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2760-26-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2760	lossy.exe

Loads dropped DLL 1 IoCs

pid	Process
1760	2024-05-02_8706cb78f7afbbea76258935f5cb8b5e_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 1760 wrote to memory of 2760	1760	2024-05-02_8706cb78f7afbbea76258935f5cb8b5e_cryptolocker.exe	28
PID 1760 wrote to memory of 2760	1760	2024-05-02_8706cb78f7afbbea76258935f5cb8b5e_cryptolocker.exe	28
PID 1760 wrote to memory of 2760	1760	2024-05-02_8706cb78f7afbbea76258935f5cb8b5e_cryptolocker.exe	28
PID 1760 wrote to memory of 2760	1760	2024-05-02_8706cb78f7afbbea76258935f5cb8b5e_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-02_8706cb78f7afbbea76258935f5cb8b5e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-02_8706cb78f7afbbea76258935f5cb8b5e_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1760
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:2760

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
a7e7338bc8c2f636666d3687f5bfaf4f

SHA1
b75e739a6242458a9964d12d6f0bfdae06412140

SHA256
ec982a3871fb17639886d98677f3a9ad10ca671c1d9933a6036e9ea2e2090b86

SHA512
d1f4d1e1e4ce272f16b1fcc779548daa2adb97e529cdfbdf6d7f942fc0b09eec8fc214d63ca303508c7f3785b274b7c0b1df4c76923dea5686f205508e7be4e1

Download Submit
memory/1760-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/1760-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/1760-2-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/1760-3-0x0000000000560000-0x0000000000566000-memory.dmp

Filesize
24KB

Download
memory/1760-13-0x0000000001F00000-0x0000000001F0A000-memory.dmp

Filesize
40KB

Download
memory/1760-16-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2760-18-0x0000000000480000-0x0000000000486000-memory.dmp

Filesize
24KB

Download
memory/2760-25-0x0000000000440000-0x0000000000446000-memory.dmp

Filesize
24KB

Download
memory/2760-26-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download