d69367d3c0b9a2e7cf83a8dc1c6b34d8b38f9eb75e329439dae098249190d787

Analysis

max time kernel
13s
max time network
153s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
13/02/2024, 19:31

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General

Target

2024-02-13_4b702b8468c3892b8743f8f15ea59124_cryptolocker.exe
Size

39KB
MD5

4b702b8468c3892b8743f8f15ea59124
SHA1

7895319b0b2aaedc40599a8abbd5a581d13c6e85
SHA256

d69367d3c0b9a2e7cf83a8dc1c6b34d8b38f9eb75e329439dae098249190d787
SHA512

0f6320989719e9e67a96db071c5d32c053876e5ebb12eed82fd96cda4e377cbb1c175b8f7d20953c3e5dc055659a69c469a3dd395892385c41ab4323bfb1b215
SSDEEP

384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zzzcYgUPSznHzl6AJvDSuYlxuj0:b/yC4GyNM01GuQMNXw2PSjHPbSuYla0

Score

9^/10

discovery

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b00000001223f-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2848	retln.exe

Loads dropped DLL 1 IoCs

pid	Process
2120	2024-02-13_4b702b8468c3892b8743f8f15ea59124_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
2120	2024-02-13_4b702b8468c3892b8743f8f15ea59124_cryptolocker.exe
2848	retln.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2120 wrote to memory of 2848	2120	2024-02-13_4b702b8468c3892b8743f8f15ea59124_cryptolocker.exe	28
PID 2120 wrote to memory of 2848	2120	2024-02-13_4b702b8468c3892b8743f8f15ea59124_cryptolocker.exe	28
PID 2120 wrote to memory of 2848	2120	2024-02-13_4b702b8468c3892b8743f8f15ea59124_cryptolocker.exe	28
PID 2120 wrote to memory of 2848	2120	2024-02-13_4b702b8468c3892b8743f8f15ea59124_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-13_4b702b8468c3892b8743f8f15ea59124_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-13_4b702b8468c3892b8743f8f15ea59124_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2120
- 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:2848

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

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Downloads

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

Filesize
39KB

MD5
7d96b45af4541eab69cfd2440b7ef369

SHA1
c230b305cec6c6678ece6aa05cf1ab0abc8639dc

SHA256
eb95bcb0bab96ad27d045d4925006af093991ca3ee8d0f3d3db899cf9b8c2e93

SHA512
9b2ee4aa4d3265b90d2fa68ae85c813fd94fde7f51f1fce5a23e10c52875447c47bccaa53045bff0b5535fb0850900d0941e8fa828803793e0be4e37822049a1

Download Submit
memory/2120-0-0x0000000000390000-0x0000000000396000-memory.dmp

Filesize
24KB

Download
memory/2120-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2120-2-0x0000000000390000-0x0000000000396000-memory.dmp

Filesize
24KB

Download
memory/2848-23-0x0000000000360000-0x0000000000366000-memory.dmp

Filesize
24KB

Download