5193d2db63a22cfe309e94260169f70f920df0ac9d3aeccc46447816ffdcabc7

Analysis

max time kernel
118s
max time network
124s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
18-02-2024 16:51

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General

Target

2024-02-18_ecb92fbe76dbe69362cc722483823b13_cryptolocker.exe
Size

41KB
MD5

ecb92fbe76dbe69362cc722483823b13
SHA1

f43513d6eb342855bb69bcd16855f348b72dc537
SHA256

5193d2db63a22cfe309e94260169f70f920df0ac9d3aeccc46447816ffdcabc7
SHA512

b9d1bbd64163ccec2f19031fa505d49ef69a0a66a0e3c0410fba504b072b99665a8c648b02f97d7729dc152709658e6463c09b8f71154ccab68e61538a8dc2bd
SSDEEP

768:b/yC4GyNM01GuQMNXw2PSjHPbSuYlW8PAaW:b/pYayGig5HjS3NPA1

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x0008000000012270-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2792	retln.exe

Loads dropped DLL 1 IoCs

pid	Process
2184	2024-02-18_ecb92fbe76dbe69362cc722483823b13_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
2184	2024-02-18_ecb92fbe76dbe69362cc722483823b13_cryptolocker.exe
2792	retln.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2184 wrote to memory of 2792	2184	2024-02-18_ecb92fbe76dbe69362cc722483823b13_cryptolocker.exe	28
PID 2184 wrote to memory of 2792	2184	2024-02-18_ecb92fbe76dbe69362cc722483823b13_cryptolocker.exe	28
PID 2184 wrote to memory of 2792	2184	2024-02-18_ecb92fbe76dbe69362cc722483823b13_cryptolocker.exe	28
PID 2184 wrote to memory of 2792	2184	2024-02-18_ecb92fbe76dbe69362cc722483823b13_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-18_ecb92fbe76dbe69362cc722483823b13_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-18_ecb92fbe76dbe69362cc722483823b13_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2184
- 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:2792

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
41KB

MD5
c7b676e3b83b01c7a0b8b971534951bd

SHA1
f77ce5d87f3f642212c82524326a340fa7edb3a3

SHA256
0da075220ada2a94e3e7c4976325557e498c526495baf862ff23c63903bd5167

SHA512
6edbbeb6a82ced6a5401f303798699ef167f2a860e30f16975169acbbd5d2c0102e60953cb491ec2e0734cf91fec4eb4b01c611efc1fb02c8a273dc7621b5364

Download Submit
memory/2184-0-0x00000000003D0000-0x00000000003D6000-memory.dmp

Filesize
24KB

Download
memory/2184-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2184-2-0x00000000003D0000-0x00000000003D6000-memory.dmp

Filesize
24KB

Download
memory/2792-17-0x0000000000260000-0x0000000000266000-memory.dmp

Filesize
24KB

Download