4f24ea23e43d3addf5850b45aef860148a222df655fa774b93d71f37d87280ed

Analysis

max time kernel
150s
max time network
154s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
28/01/2024, 08:31

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General

Target

2024-01-28_62a92a56385cc4a47520a316d197fe53_cryptolocker.exe
Size

33KB
MD5

62a92a56385cc4a47520a316d197fe53
SHA1

c750c48e8831996d3423363e0611c981f92e6784
SHA256

4f24ea23e43d3addf5850b45aef860148a222df655fa774b93d71f37d87280ed
SHA512

236b3302977bc64690eb0a4d2ad8310046d85b050cf35e5c09debb7f7a12cfdb146c62c0c5047268052ed5ea556304cfacc090de223dcc3be0f7b714373a904a
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGp/YIm7wmT:o1KhxqwtdgI2MyzNORQtOflIwoHNV2Xw

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x0008000000012248-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x0008000000012248-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2376	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
2204	2024-01-28_62a92a56385cc4a47520a316d197fe53_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
2204	2024-01-28_62a92a56385cc4a47520a316d197fe53_cryptolocker.exe
2376	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2204 wrote to memory of 2376	2204	2024-01-28_62a92a56385cc4a47520a316d197fe53_cryptolocker.exe	28
PID 2204 wrote to memory of 2376	2204	2024-01-28_62a92a56385cc4a47520a316d197fe53_cryptolocker.exe	28
PID 2204 wrote to memory of 2376	2204	2024-01-28_62a92a56385cc4a47520a316d197fe53_cryptolocker.exe	28
PID 2204 wrote to memory of 2376	2204	2024-01-28_62a92a56385cc4a47520a316d197fe53_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-01-28_62a92a56385cc4a47520a316d197fe53_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-28_62a92a56385cc4a47520a316d197fe53_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2204
- 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:2376

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
33KB

MD5
eb942a480c30d813209520952eafe3d0

SHA1
649f49a75164ea66f07206a77281bd47f8ac3190

SHA256
070e8ee67cf0ec359bbad2435aeccf288ce6ad61fab69ebb17be06a37da4c3eb

SHA512
7bb233bb0ec5f251c8d2927d5d84e1a09bb125d172f9ab61f71163a28f175c46634be5a193616adb77984f8315e4e21bd32be66403d7808450ccf6887dc5c116

Download Submit
memory/2204-0-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download
memory/2204-2-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download
memory/2204-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2376-18-0x00000000001C0000-0x00000000001C6000-memory.dmp

Filesize
24KB

Download