64ce0d56f00643d26eb19b585406ef679f8710adbb3f735b917d3f5f1732f5ee

Analysis

max time kernel
129s
max time network
149s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
25-01-2024 17:51

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General

Target

2024-01-25_5af23067b325980de6dda8aed7fc678a_cryptolocker.exe
Size

63KB
MD5

5af23067b325980de6dda8aed7fc678a
SHA1

8a6113eef6a3c9ec476dbc5e1ae6ce1b85f77789
SHA256

64ce0d56f00643d26eb19b585406ef679f8710adbb3f735b917d3f5f1732f5ee
SHA512

7cb6f200d1fdbf5504496069bdb50561f9edfd14422980d27527216f8396b0d09f5b56338ea8e1c43b2085571f4b7b86ef1b7aa4d1018694bb94dde88160ef4f
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1x/9lfL+gniDSA96:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7Q

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000c000000012327-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000c000000012327-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2384	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
1992	2024-01-25_5af23067b325980de6dda8aed7fc678a_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
1992	2024-01-25_5af23067b325980de6dda8aed7fc678a_cryptolocker.exe
2384	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1992 wrote to memory of 2384	1992	2024-01-25_5af23067b325980de6dda8aed7fc678a_cryptolocker.exe	28
PID 1992 wrote to memory of 2384	1992	2024-01-25_5af23067b325980de6dda8aed7fc678a_cryptolocker.exe	28
PID 1992 wrote to memory of 2384	1992	2024-01-25_5af23067b325980de6dda8aed7fc678a_cryptolocker.exe	28
PID 1992 wrote to memory of 2384	1992	2024-01-25_5af23067b325980de6dda8aed7fc678a_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-01-25_5af23067b325980de6dda8aed7fc678a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-25_5af23067b325980de6dda8aed7fc678a_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1992
- 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:2384

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
63KB

MD5
d74284258bcb5e2a521c02cb0dc474a2

SHA1
136934fba18c510d6f096de7638cf0501883ea2e

SHA256
9682d1614b93654f462630ee83b2bdc579088fa155c81d21e299e38b2d77d388

SHA512
233822a7d5c42169a284e7c74e2b401b451f24568632e16e39ef54de9aa003ba1f5a2a69c6dbeb8cd100d5b977667fcde8a16764353b46b8b24c8fecb8d83f4f

Download Submit
memory/1992-0-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/1992-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1992-1-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/2384-17-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download