c6ab6d700a7a080b5872ee3c659ad29fd7085cb90238eca07f68a3129f16a857

Analysis

max time kernel
9s
max time network
154s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
12/02/2024, 10:11

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-02-12_c16cde56c9964ff6428ee7f0d56a4f45_cryptolocker.exe
Size

40KB
MD5

c16cde56c9964ff6428ee7f0d56a4f45
SHA1

42b116d009bc416349fdd9f11dff8c3d8a2e4e64
SHA256

c6ab6d700a7a080b5872ee3c659ad29fd7085cb90238eca07f68a3129f16a857
SHA512

4f7dccfe0521e94fb66f056769b55ef9cdba3d053fa041e9c71a574d3217babadb4f77c243c0e406bdde3b66a8377d8ba2d34cf0aab716322b65092e64b0e9c4
SSDEEP

768:b/yC4GyNM01GuQMNXw2PSjHPbSuYlW8PAqLu:b/pYayGig5HjS3NPAqK

Score

9^/10

discovery

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b000000012238-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2700	retln.exe

Loads dropped DLL 1 IoCs

pid	Process
2444	2024-02-12_c16cde56c9964ff6428ee7f0d56a4f45_cryptolocker.exe

Creates a large amount of network flows 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Discovery
T1046
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
2444	2024-02-12_c16cde56c9964ff6428ee7f0d56a4f45_cryptolocker.exe
2700	retln.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2444 wrote to memory of 2700	2444	2024-02-12_c16cde56c9964ff6428ee7f0d56a4f45_cryptolocker.exe	28
PID 2444 wrote to memory of 2700	2444	2024-02-12_c16cde56c9964ff6428ee7f0d56a4f45_cryptolocker.exe	28
PID 2444 wrote to memory of 2700	2444	2024-02-12_c16cde56c9964ff6428ee7f0d56a4f45_cryptolocker.exe	28
PID 2444 wrote to memory of 2700	2444	2024-02-12_c16cde56c9964ff6428ee7f0d56a4f45_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-12_c16cde56c9964ff6428ee7f0d56a4f45_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-12_c16cde56c9964ff6428ee7f0d56a4f45_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2444
- 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:2700

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Discovery

T1046

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

\Users\Admin\AppData\Local\Temp\retln.exe

Filesize
40KB

MD5
45d9f51cfcdfd5582b556e8648b57dde

SHA1
a3f60b43a1d7ed96f23f6453aa54ad8444532344

SHA256
50a153d868c9cd4168b312748964960f073369ad3841418a5275171d4cec4bb8

SHA512
6ed8f5751e5621a6d4b5257938829d72704270ff2e439240b612388faf7f46ecac09fdeb8bdf4af002dc6882ed7f21cf191f01183f179a5f64d2adf7923e67a4

Download Submit
memory/2444-0-0x00000000002E0000-0x00000000002E6000-memory.dmp

Filesize
24KB

Download
memory/2444-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2444-6-0x00000000002E0000-0x00000000002E6000-memory.dmp

Filesize
24KB

Download