ec890013f1975d4e0b6ef0495501bb2f515e05d64a30b3efb835931bf8e54040

Analysis

max time kernel
150s
max time network
159s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
28/02/2024, 16:42

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General

Target

2024-02-28_5ee56bf8228a917cf4cb42798cdd56bd_cryptolocker.exe
Size

45KB
MD5

5ee56bf8228a917cf4cb42798cdd56bd
SHA1

5eb6fa5d9612fc933661e6800d59003740a72340
SHA256

ec890013f1975d4e0b6ef0495501bb2f515e05d64a30b3efb835931bf8e54040
SHA512

df01edc87aae0aaa5c798215ce3c55b6c66817733087fae87fbf2907999a53cdf168c469ae1b5885b77dce1e9ff801f76a9e0f8584fc2e95307ff4998091458a
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGpebVIYLHA3KxA:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XB

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b00000001222a-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000b00000001222a-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2492	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
2244	2024-02-28_5ee56bf8228a917cf4cb42798cdd56bd_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
2244	2024-02-28_5ee56bf8228a917cf4cb42798cdd56bd_cryptolocker.exe
2492	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2244 wrote to memory of 2492	2244	2024-02-28_5ee56bf8228a917cf4cb42798cdd56bd_cryptolocker.exe	28
PID 2244 wrote to memory of 2492	2244	2024-02-28_5ee56bf8228a917cf4cb42798cdd56bd_cryptolocker.exe	28
PID 2244 wrote to memory of 2492	2244	2024-02-28_5ee56bf8228a917cf4cb42798cdd56bd_cryptolocker.exe	28
PID 2244 wrote to memory of 2492	2244	2024-02-28_5ee56bf8228a917cf4cb42798cdd56bd_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-28_5ee56bf8228a917cf4cb42798cdd56bd_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-28_5ee56bf8228a917cf4cb42798cdd56bd_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2244
- C:\Users\Admin\AppData\Local\Temp\hurok.exe
  "C:\Users\Admin\AppData\Local\Temp\hurok.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of UnmapMainImage
  PID:2492

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\hurok.exe

Filesize
45KB

MD5
98a27c1c184ef710ffd7f2b4e96c829c

SHA1
bc0d62d63d84e27ec41c7e6f5e61ba6faed59f53

SHA256
7fa4e21ef80c00fc805d8065f02b1c391d8328ebc84776db337c115798cfca88

SHA512
e99812f1f1ad73faa4474429a375d090bdb2f0c4361152dbef7653d829dc7ddd9e678d147420825b4795cb545a5c957bfc49a45963e45dc9b5d3b79cabab8b6b

Download Submit
memory/2244-0-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/2244-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2244-8-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/2492-19-0x00000000001C0000-0x00000000001C6000-memory.dmp

Filesize
24KB

Download