d3bf84123cff75a0d774b9bf9bfeb8947247edac29038a9a09892551e6f02c51

Analysis

max time kernel
150s
max time network
150s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
22-05-2024 21:37

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General

Target

2024-05-22_4d70eaad6e4a5bd1b7b63678ac0eda4b_cryptolocker.exe
Size

65KB
MD5

4d70eaad6e4a5bd1b7b63678ac0eda4b
SHA1

f2c0b72c7ea4587af3ae537f0b93e875133e36fc
SHA256

d3bf84123cff75a0d774b9bf9bfeb8947247edac29038a9a09892551e6f02c51
SHA512

8c8894f03635cc96cfff5962f90b96b459451ef3d5608f7325658caf28703bb24939b7a39d3ca6683298411dd3cadb5ad27fc6efb2c2fa7c4ffbbe1692080a38
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszudnYTjipvF293CiM:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7K

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

Processes:

resource	yara_rule
\Users\Admin\AppData\Local\Temp\hurok.exe	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

Processes:

resource	yara_rule
\Users\Admin\AppData\Local\Temp\hurok.exe	CryptoLocker_set1

Executes dropped EXE 1 IoCs

Processes:

hurok.exe

pid process

2564 hurok.exe
Loads dropped DLL 1 IoCs

Processes:

2024-05-22_4d70eaad6e4a5bd1b7b63678ac0eda4b_cryptolocker.exe

pid process

1976 2024-05-22_4d70eaad6e4a5bd1b7b63678ac0eda4b_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

Processes:

2024-05-22_4d70eaad6e4a5bd1b7b63678ac0eda4b_cryptolocker.exehurok.exe

pid process

1976 2024-05-22_4d70eaad6e4a5bd1b7b63678ac0eda4b_cryptolocker.exe
2564 hurok.exe

pid	process
2564	hurok.exe

pid	process
1976	2024-05-22_4d70eaad6e4a5bd1b7b63678ac0eda4b_cryptolocker.exe

pid	process
1976	2024-05-22_4d70eaad6e4a5bd1b7b63678ac0eda4b_cryptolocker.exe
2564	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

2024-05-22_4d70eaad6e4a5bd1b7b63678ac0eda4b_cryptolocker.exe

description	pid	process	target process
PID 1976 wrote to memory of 2564	1976	2024-05-22_4d70eaad6e4a5bd1b7b63678ac0eda4b_cryptolocker.exe	hurok.exe
PID 1976 wrote to memory of 2564	1976	2024-05-22_4d70eaad6e4a5bd1b7b63678ac0eda4b_cryptolocker.exe	hurok.exe
PID 1976 wrote to memory of 2564	1976	2024-05-22_4d70eaad6e4a5bd1b7b63678ac0eda4b_cryptolocker.exe	hurok.exe
PID 1976 wrote to memory of 2564	1976	2024-05-22_4d70eaad6e4a5bd1b7b63678ac0eda4b_cryptolocker.exe	hurok.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-22_4d70eaad6e4a5bd1b7b63678ac0eda4b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-22_4d70eaad6e4a5bd1b7b63678ac0eda4b_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1976
- 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:2564

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
65KB

MD5
11a25bba0321ced94c63233d2ddecbc3

SHA1
c4b0efef30c5587878a334036c4f1a671d0d4f1c

SHA256
2effbb7c4715c118e95970c8e6471d54ecc9dceb0d92cec1d7cecfd20ee78d64

SHA512
ca1aed3d8888f2c6a0d05172bcf64193988304a804a6edb1fcc02a4feae07c86f93b3596b796dcd4ff0cdb71f33f48b15463767ca880f08b4fd15cd9682aa52f

Download Submit
memory/1976-0-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/1976-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1976-8-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download