8a7e9edc1d59d5ed4deb49c3d546bb6e71cffa33ecd485c739ef953df0f21e38

Analysis

max time kernel
188s
max time network
182s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
18/01/2024, 22:59

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General

Target

2024-01-18_82b00318d8e28a0f8ec32f6cd04bd558_cryptolocker.exe
Size

44KB
MD5

82b00318d8e28a0f8ec32f6cd04bd558
SHA1

d263c41ffd7eb2b8d84966b006db67f5212ae3f2
SHA256

8a7e9edc1d59d5ed4deb49c3d546bb6e71cffa33ecd485c739ef953df0f21e38
SHA512

fbacf2cc04108f2bf2911ca4bc4419d7559a1f87126f369a677f7cd5d43e84a695b72042f2e867ec0ca574ae98c3b0d3136a4a55c238a1e7a389dad221c81db3
SSDEEP

768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6j4AYsqSh+DETkedmhXSF:YGzl5wjRQBBOsP1QMOtEvwDpjl39+D+T

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/2940-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b000000012261-13.dat	CryptoLocker_rule2
behavioral1/memory/2600-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2940-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/2940-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000b000000012261-13.dat	CryptoLocker_set1
behavioral1/memory/2600-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2940-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2600	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2940	2024-01-18_82b00318d8e28a0f8ec32f6cd04bd558_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 2940 wrote to memory of 2600	2940	2024-01-18_82b00318d8e28a0f8ec32f6cd04bd558_cryptolocker.exe	29
PID 2940 wrote to memory of 2600	2940	2024-01-18_82b00318d8e28a0f8ec32f6cd04bd558_cryptolocker.exe	29
PID 2940 wrote to memory of 2600	2940	2024-01-18_82b00318d8e28a0f8ec32f6cd04bd558_cryptolocker.exe	29
PID 2940 wrote to memory of 2600	2940	2024-01-18_82b00318d8e28a0f8ec32f6cd04bd558_cryptolocker.exe	29

C:\Users\Admin\AppData\Local\Temp\2024-01-18_82b00318d8e28a0f8ec32f6cd04bd558_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-18_82b00318d8e28a0f8ec32f6cd04bd558_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2940
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2600

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

C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
44KB

MD5
2e2a89fffb902d9e3a09072852c510ee

SHA1
4ac1228485dd9539c20cc01b614fde7d3597dac9

SHA256
46cdc4d4a0ec3623126e69f2cdd69df60ad97d88164ec54bbb92ded771371b67

SHA512
83d5144e551c3db3b2aab55145b08dd0b6dff76a4c0881a2aeb72c761da02003ea0aa722af2e931351faf0e76bf6329b4622bd05411fa6769b9f4419939d0bb4

Download Submit
memory/2600-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2600-18-0x0000000000360000-0x0000000000366000-memory.dmp

Filesize
24KB

Download
memory/2600-19-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/2940-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2940-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2940-2-0x00000000002F0000-0x00000000002F6000-memory.dmp

Filesize
24KB

Download
memory/2940-3-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2940-15-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download